![Daikin FHYC35B7V1 — troubleshooting Guide for Split Type Indoor Units and Thermistors [196/344]](/img/pdf.png)
Daikin FHYC35B7V1 — troubleshooting Guide for Split Type Indoor Units and Thermistors [196/344]
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SiE18-201 Troubleshooting - Split Type Indoor Unit
Service Diagnosis 185
1.5.4 Operation Halt Due to Detection of Thermistor or Related
Abnormality
Remote
Controller
Display
C4, C5, C9, CA
Indoor Unit LED
Display
A 5 B 5
Note: No LED Display on FTK(X)25/35J Series.
Method of
Malfunction
Detection
The temperatures detected by the thermistors are used to determine thermistor errors.
Malfunction
Decision
Conditions
When the thermistor input is more than 4.96 V or less than 0.04 V during compressor
operation∗.
∗ (reference)
When above about 212˚C (less than 120 ohms) or below about -50˚C (more than 1,860 kohms).
Note: The values vary slightly in some models.
Supposed
Causes
Faulty connector connection
Faulty thermistor
Faulty PCB
Troubleshooting
Check No.8
Refer to P.254
C4 : Heat exchanger temperature thermistor
C5 : Heat exchanger temperature thermistor
C9 : Suction air thermistor
CA : Discharge air thermister
Check the connector
connection.
YES
Correct the connection.
Replace the thermistor.
(Replace the indoor unit
PCB.)
Replace the indoor unit
PCB.
Is it normal?
Is it normal?
(MF004)
NO
Check No. 8
Thermistor resistance check
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Содержание
- Manual p.1
- Service p.1
- J series p.1
- Heat pump indoor unit p.2
- Outdoor unit p.2
- Bp unit p.2
- Super multi plus j series p.2
- Specifications p.3
- Part 2 specifications p.3
- Main functions 8 p.3
- List of function p.3
- Part 4 main functions indoor unit 7 p.3
- Part 1 list of function p.3
- Introduction vii p.3
- And name 3 p.3
- System control 3 p.3
- Refrigerant system and function of functional parts of outdoor unit 7 p.3
- Protection device 1 p.3
- Printed circuit board connector wiring diagram and name 4 p.3
- Part 5 main functions outdoor unit bp unit 5 p.3
- Part 3 printed circuit board connector wiring diagram p.3
- Part 6 flow of refrigerant 25 p.4
- Flow of refrigerant 26 p.4
- Part 9 service diagnosis 75 p.5
- Part 8 operating test 57 p.5
- Part 7 operations 45 p.5
- Operating test 58 p.5
- Method of field set 64 p.5
- Bp unit trouble diagnosis 59 p.5
- Troubleshooting split type indoor unit 76 p.5
- Troubleshooting skyair indoor unit 95 p.5
- Troubleshooting outdoor unit related 09 p.5
- Remote controller 46 p.5
- Wiring diagrams 17 p.6
- Wiring 98 p.6
- Piping diagrams 10 p.6
- Part 12 appendix 09 p.6
- Part 11 cautions before operation 93 p.6
- Part 10 removal procedure 61 p.6
- Outdoor unit 70 p.6
- Others 04 p.6
- Installation 94 p.6
- Indoor unit 92 p.6
- Index i p.6
- For bpmk928b42 43 62 p.6
- Drawings flow charts v p.6
- Warning p.8
- Safety cautions p.8
- Introduction p.8
- Cautions in repair p.8
- Warning p.9
- Cautions regarding products after repair p.9
- Caution p.9
- Warning p.10
- Inspection after repair p.10
- Caution p.10
- Using icons list p.11
- Using icons p.11
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below p.11
- Caution p.11
- List of function p.12
- Part 1 list of function p.12
- List of function sie18 201 p.13
- List of function p.13
- Function list for europe r 22 p.13
- For flx50 60j p.13
- Sie18 201 list of function p.14
- List of function 3 p.14
- Function list for singapore malaysia indonesia p.14
- List of function sie18 201 p.15
- List of function p.15
- Function list for australia p.15
- For flk flx50 60j 2 p.15
- For flk flx50 60j p.15
- Function list for europe r 407c p.16
- For flx50 60j 2 p.16
- For flx50 60j p.16
- Sie18 201 list of function p.16
- List of function 5 p.16
- Specifications p.18
- Part 2 specifications p.18
- Specifications p.19
- Outdoor units p.19
- Outdoor unit p.19
- Main piping p.19
- Indoor unit p.19
- Cooling only p.19
- Branch piping p.19
- Bp unit p.19
- Indoor unit p.20
- Hz 220v p.20
- Branch piping p.20
- Bp unit p.20
- Specifications 9 p.20
- Sie18 201 specifications p.20
- Outdoor unit p.20
- Main piping p.20
- Specifications sie18 201 p.21
- Specifications p.21
- Outdoor unit p.21
- Main piping p.21
- Indoor unit p.21
- Hz 220 230 240v 60hz 220 230v p.21
- Branch piping p.21
- Bp unit p.21
- Indoor unit p.22
- Hz 220 230 240v 60hz 220 230v p.22
- Branch piping p.22
- Bp unit p.22
- Specifications 11 p.22
- Sie18 201 specifications p.22
- Outdoor unit p.22
- Main piping p.22
- Specifications sie18 201 p.23
- Specifications p.23
- Outdoor unit p.23
- Main piping p.23
- Indoor unit p.23
- Hz 220 240v 60hz 220 230v p.23
- Heat pump p.23
- Branch piping p.23
- Bp unit p.23
- Hz 220 230v p.24
- Branch piping p.24
- Bp unit p.24
- Specifications 13 p.24
- Sie18 201 specifications p.24
- Outdoor unit p.24
- Main piping p.24
- Indoor unit p.24
- Specifications sie18 201 p.25
- Specifications p.25
- Outdoor unit p.25
- Main piping p.25
- Indoor unit p.25
- Hz 220 240v 60hz 220 230v p.25
- Branch piping p.25
- Bp unit p.25
- Hz 220 230 240v 60hz 220 230v p.26
- Branch piping p.26
- Bp unit p.26
- Specifications 15 p.26
- Sie18 201 specifications p.26
- Outdoor unit p.26
- Main piping p.26
- Indoor unit p.26
- Specifications sie18 201 p.27
- Specifications p.27
- Hz 220 240v 60hz 220 230v p.27
- Bp units p.27
- Wall mounted type p.28
- Indoor units for europe p.28
- Heat pump p.28
- 2 kw class 3 kw class p.28
- Hz 230v p.29
- 7 kw class p.29
- 5 kw class 6 kw class p.29
- Specifications sie18 201 p.29
- Specifications p.29
- Specifications 19 p.30
- Sie18 201 specifications p.30
- Hz 230v p.30
- Duct connected type p.30
- 5 kw class 6 kw class p.30
- 2 kw class 3 kw class p.30
- Specifications sie18 201 p.31
- Specifications p.31
- Hz 230v p.31
- 5 kw class 6 kw class p.31
- 2 kw class 3 kw class p.31
- Floor ceiling suspended dual type p.32
- 5 kw class 6 kw class p.32
- 2 kw class 3 kw class p.32
- Specifications 21 p.32
- Sie18 201 specifications p.32
- Hz 230v p.32
- Specifications sie18 201 p.33
- Specifications p.33
- Hz 230v p.33
- Floor standing type p.33
- 2 kw class 3 kw class p.33
- Printed circuit board connector wiring diagram and name 4 p.34
- Part 3 printed circuit board connector wiring diagram and name p.34
- Printed circuit board connector wiring diagram and name p.35
- Printed circuit board p.35
- Other designations p.35
- Name of connector p.35
- Fu1 fuse for transformer 2 fu2 fuse for inter connecting wire to room 1 3 fu3 fuse for inter connecting wire to room 2 4 fu4 fuse for inter connecting wire to room 3 5 led a led for service monitor 6 led b led for service monitor 7 led 1 to 4 led for fault indication p.35
- Branch provider unit bpmk928b42 b43 p.35
- S1 connector for bypass electronic expansion valve 2 s2 to s4 connector for electronic expansion valve to room a b and c 3 s5 connector for thermistors p.35
- Printed circuit board p.36
- Outdoor unit rmx140jvmb rmx140jzvm p.36
- Name of connector p.36
- Heat pump p.36
- Printed circuit board 1 control pcb p.37
- Other designations p.37
- Sie18 201 printed circuit board connector wiring diagram and name p.38
- Printed circuit board connector wiring diagram and name 27 p.38
- Printed circuit board 4 indicator pcb p.38
- Printed circuit board 3 fan control p.38
- Printed circuit board 2 filter pcb p.38
- Printed circuit board p.39
- Name of connector p.39
- Heat pump p.39
- Ftx25 35j series ftxd25 35k series fvx25 35k series p.39
- Sie18 201 printed circuit board connector wiring diagram and name p.40
- Printed circuit board connector wiring diagram and name 29 p.40
- Printed circuit board 1 3 detail p.40
- Printed circuit board 1 3 p.40
- Printed circuit board 1 control pcb p.41
- Printed circuit board p.41
- Other designations p.41
- Name of connector p.41
- Heat pump p.41
- Ftxd50 71jv series p.41
- Sie18 201 printed circuit board connector wiring diagram and name p.42
- Printed circuit board connector wiring diagram and name 31 p.42
- Printed circuit board 4 signal receiver pcb p.42
- Printed circuit board 3 display pcb p.42
- Printed circuit board 2 power supply pcb p.42
- Cdx25 60hav series cdx25 60jv series p.43
- Printed circuit board p.43
- Name of connector p.43
- Heat pump p.43
- Sie18 201 printed circuit board connector wiring diagram and name p.44
- Printed circuit board connector wiring diagram and name 33 p.44
- Printed circuit board 1 3 detail p.44
- Printed circuit board 1 3 p.44
- Printed circuit board p.45
- Other designation p.45
- Name of connector p.45
- Heat pump p.45
- Flx25 60hv series flx50 60jv series p.45
- Sie18 201 printed circuit board connector wiring diagram and name p.46
- Printed circuit board connector wiring diagram and name 35 p.46
- Printed circuit board 2 power supply pcb p.46
- Printed circuit board 1 control pcb p.46
- Part 4 main functions indoor unit p.48
- Main functions 8 p.48
- Wide angle flaps louvers and auto swing p.49
- Others p.49
- Main functions in split type p.49
- Main functions p.49
- For ftx25 35j series only outline of the action p.49
- For more information about hall ic refer to hall ic check a6 on page 258 p.50
- Note when there is no operation and the night set mode turns on the step is low refer to night set mode on page 42 p.50
- Note 1 during powerful operation fan operate h tap 50 70 rpm 2 fan stops during defrost operation p.50
- For ftx25 35j series control mode p.50
- For ftx25 35 j series p.50
- Fan speed control for indoor units p.50
- Automatic air flow control for heating p.50
- Within this range the airflow rate is automatically controlled when the airflow adjusting button is set to automatic p.50
- Automatic air flow control for cooling p.50
- When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound p.50
- Air purifying filter p.50
- The following drawing explains the principle of fan speed control for cooling p.50
- The following drawing explains the principle for fan speed control for heating p.50
- The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature this is done through phase control and hall ic control p.50
- The air purifying filter electrostatic filter catches pollen or smoke of cigarette as small as 0 1 micron through electro static charging an activated carbon deodorizing filter in a net shape is also mounted to absorb and minimize fine odor particles p.50
- Signal receiving sign p.50
- Phase steps p.50
- Phase control and fan speed control contains 8 steps lll ll l ml m hm h and hh p.50
- Washable grille p.51
- Program dry function p.51
- Pre heat operation heat pump only p.51
- Mold proof air filter p.51
- In the case of inverter units p.51
- Hot start function heat pump only p.51
- For ftk x 25 35 j series p.51
- Detailed explanation of the function p.52
- Automatic operation heat pump only p.52
- The night set circuit continues heating or cooling the room at the set temperature for the first one hour then automatically lowers the temperature setting slightly in the case of cooling or raises it slightly in the case of heating for economical operations this prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity p.53
- The night set circuit p.53
- The microcomputer continuously monitors main operating conditions of the indoor unit outdoor unit and the entire system should an abnormality occur the lcd remote controller displays information and the indicators on the indoor and outdoor units light these indications allow prompt maintenance operations p.53
- The lighting patterns of the indoor unit leds operation timer and dry hot start indicators and the leds on the outdoor unit s printed circuit board allow diagnosis of problem areas and faulty conditions of the interconnecting wire p.53
- Self diagnosis led display p.53
- Self diagnosis digital display p.53
- Note self diagnosis led display is not equipped for ftx25 35 j series p.53
- Night set mode p.53
- Main functions sie18 201 p.53
- Main functions p.53
- Heating operation p.53
- Even if a power failure including one for just a moment occurs during the operation the operation restarts in the condition before power failure automatically when power is restored note it takes 3 minutes to restart the operation because the 3 minute standby function is activated p.53
- Cooling operation p.53
- Auto restart function p.53
- When the off timer is set the new night set circuit automatically activates the night set circuit automatically switches the fan speed to a low setting to minimize operating noise on the other hand the new night set circuit maintains the airflow setting made by users some models are equipped with an night set circuit on switch p.53
- When a micro computer doesn t have a signal from the sensor in 20 minutes it judges that no body is in the room and turns off the human detection led operating the unit in temperature sifted 2 c from the set temperature cooling 2 c higher dry 1 c higher and auto according to the operation mode at that time 1 in case of fan mode the fan speed reduces by 50 rpm p.54
- This sensor detects human motion by receiving infrared rays and displays the pulse wave output a micro computer in an indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20msec 10 100msec it judges human is in the room as the motion signal is on p.54
- The motions for example in cooling p.54
- The function that detects existence of humans in the air conditioned room and reduces the capacity when no humans are available in the room in order to save electricity by means of a human motion sensor p.54
- Sie18 201 main functions p.54
- Processing p.54
- Main functions 43 p.54
- Intelligent eye p.54
- For ftx25 35 j series only outline p.54
- Detection method by human motion sensor p.54
- Processing p.55
- Others p.55
- Good sleep cooling control p.55
- For ftx25 35 j series only outline p.55
- By the function of the microcomputer program dry operation reduces the humidity keeping the temperature in a minimum drop room temperature and air volume can not be controlled by room temperature adjusting button and air volume adjusting button because they are controlled automatically when the program dry function starts dry operation is provided and then it repeats 5 minute suspension and 4 minute dry operation alternately when the room temperature rises it repeats the above process from the beginning p.56
- Room temperature difference between activation and suspension of dry operation p.56
- Program dry operation p.56
- Note 1 the program dry function is not operated when the room temperature is at 18 c or less 2 in monitoring operation fan rotates 5 seconds after the compressor starts its operation p.56
- Dry operation activating compressor on temperature p.56
- Cooling monitoring function p.57
- Minutes standby function p.58
- Freeze protection function p.58
- Auto swing of flap s p.58
- Auto restart function p.58
- Night set mode function p.59
- Air flow automatic auto fan speed p.59
- Powerful operation p.60
- Notes on powerful operation p.60
- Emergency operation function on off switch p.60
- Filter check indicator p.61
- Control panel p.61
- Thermostat control p.62
- Skyair p.62
- Sie18 201 main functions p.62
- Main functions 51 p.62
- Existing cooling heating preset temperature range has been changed p.62
- Draft is circumvented by delaying transfer of the flap to the po0 horizontal position for a certain amount of time when defrosting and in the heating mode with the thermostat off p.62
- Draft avoidance control 1 p.62
- Freeze prevention control p.63
- Draft avoidance control 2 p.63
- Auto restart function p.63
- Air flow volume shift control p.63
- The corresponding models p.64
- Heat pump model p.64
- Cautions when skyair auto fan are used p.64
- Cautions p.64
- Part 5 main functions outdoor unit bp unit p.66
- System control 3 p.66
- Refrigerant system and function of functional parts of outdoor unit 7 p.66
- Protection device 1 p.66
- Sie18 201 refrigerant system and function of functional parts of outdoor unit p.68
- Refrigerant system and function of functional parts of outdoor unit p.68
- Main functions 57 p.68
- Bp unit p.68
- Major functional parts p.69
- Protective devices thermistors sensors p.71
- Protection device p.72
- Outdoor unit p.72
- Bp unit p.73
- Cooling p.74
- Compressor on p.74
- Compressor off p.74
- Before equalizing p.74
- Unit stop standby control p.74
- System protection control p.74
- System control p.74
- Start up standby operation p.74
- Sie18 201 system control p.74
- Power supply on p.74
- Outline of system control p.74
- Operation start p.74
- Minutes standby p.74
- Main functions 63 p.74
- Heating p.74
- Feedback control p.74
- Cooling heating p.74
- Mode configuration p.75
- Determination of normal operation mode p.75
- Air conditioner control mode p.75
- The operation mode signal sent from each bp unit is analysed in the following procedure and this signal is used to determine the operation mode of the outdoor unit p.75
- The operation mode is determined based on the first button pressed p.75
- The following shows operation mode instructions sent from two bp units operation mode command ha is issued from bp 1 and hb is sent from bp2 1 when ha hb indoor unit command is used 2 when ha stop and hb operation cooling dry heating or ha operation cooling dry heating and hb stop control room command is used 3 when ha operation hb operation and ha hb due to mode batting the following operation mode is used the first operation mode entered takes precedence operation based on first button pressed note the dry mode is treated as cooling mode and the two entered modes do not result in mode batting 4 the current operation mode of outdoor unit is sent to all bp units p.75
- Standby control at power on p.76
- Purpose of the function p.76
- Explanation of the function p.76
- To prepare for the next startup after operation shutdown and to collect refrigerant into the receiver in order to prevent liquid refrigerant from returning to the accumulator and compressor at startup p.77
- System control sie18 201 p.77
- Standby operation p.77
- Purpose of the function p.77
- Main functions p.77
- Cooling heating standby operation at startup p.77
- Purpose of the function p.78
- Main functions 67 p.78
- Equalizing control in cooling p.78
- Equalizing control p.78
- To provide equalizing control after a standby operation in order to prevent the compressor from locking due to insufficient equalizing and to ensure smooth compressor startup p.78
- Sie18 201 system control p.78
- System control sie18 201 p.79
- Main functions p.79
- Equalizing control in heating p.79
- To control the operating frequency in order to ensure compressor reliability and optimise the operating condition p.80
- Purpose of the function p.80
- Outline p.80
- Method of determining frequency the compressor operating frequency is determined in the following steps 1 selection of command frequency fsr 2 selection of upper limit frequency fmax 3 selection of lower limit frequency fmin 4 selection of restriction frequency fsg 5 execution of prohibit frequency skip control 6 selection of target frequency fmk p.80
- Determination of operation frequency p.80
- Determination of initial frequency p.80
- D signals difference between room temperature and temperature setting from bp units are used to determine the frequency corresponding to the capacities of the indoor units connected to the bp units this function is also described in the following section method of determining frequency p.80
- D signals from bp units are used as the α value in frequency commands excludes when powerful function is in operation p.81
- D room temperature temperature setting signals from bp units are converted to α values p.81
- Bp unit command conversion p.81
- 3 based on the α value determined by d signal from indoor unit the following calculation is performed α value α value α pwr p.81
- When the above conditions are met the powerful operation mode is activated and the following processes are conducted p.81
- Processing during powerful operation mode 1 when powerful command is received from indoor units one or more units 2 thermostats are not off in room units from which powerful commands are issued p.81
- Determination of s value there are two types of indoor unit capacities from individual bp units one is the σ s value of the connected indoor unit and the other is the σ s value of the indoor unit which receives an operation demand for the same mode as that of the outdoor unit they are called h u connection σ s value and bp operation σ s value respectively the sums of those s values of bp units are called outdoor unit connection σ s value and outdoor unit operation σ s value in this manual outdoor unit connection σ s value is referred to as σ s value and outdoor unit connection σ s value is referred to as σ s value p.81
- Outline p.82
- Determination of initial frequency p.82
- Description p.82
- Kfido varies depending on discharge pipe temperature do when do dofini 45 c kfido kfidoh 128 128 hot start when do dofini 45 c kfido kfidol 179 128 cold start p.83
- Determination of initial frequency for cooling initial frequency fsr is determined based on the correction of outside air temperature doa and discharge pipe temperature do in accordance with the above matrix fsr kfido 2 128 doa 35 c fini1 fini1 p.83
- Kfido varies depending on discharge pipe temperature do when do dofini 45 c kfido kfidoh 128 128 hot start when do dofini 45 c kfido kfidol 179 128 cold start p.84
- Determination of initial frequency for heating initial frequency fsr is determined based on the correction of outside air temperature doa and discharge pipe temperature do in accordance with the above matrix fsr kfido 5 128 doa 15 c fini1 fini1 p.84
- Purpose of the function p.85
- Outline p.85
- Oil return operation p.85
- Details p.85
- Oil recovery operation in heating mode p.86
- Main functions 75 p.86
- Sie18 201 system control p.86
- System control sie18 201 p.87
- Outline p.87
- Main functions p.87
- During heating operation the outdoor heat exchanger intermediate temperature of a frosted unit is estimated based on the outdoor temperature and compressor output frequency if the outdoor heat exchanger intermediate temperature is lower than the estimated defrosting temperature the unit is considered to be frosted therefore the compressor is stopped and the cooling cycle is activated for a defrosting operation reverse cycle defrost the defrosting operation stops when a certain time elapse or when the outdoor heat exchanger liquid pipe temperature reaches the preset temperature level p.87
- Details p.87
- Defrost operation p.87
- Sie18 201 system control p.88
- Pre equalization standby operation p.88
- Outline p.88
- Main functions 77 p.88
- In local air conditioner control mode and frequency fix mode this function collects surplus refrigerant in the receiver before the operation mode is changed from cooling or the compressor stops due to thermostat off this ensures proper oil level and dilution for the next startup operation this function is also activated before cooling operation starts in units that have not completed the standby operation p.88
- Details p.88
- Equalizing control in cooling p.89
- Equalizing control p.89
- Details p.89
- This function provides equalizing control after a standby operation in order to prevent the compressor from locking due to insufficient equalization and to ensure smooth compressor startup p.89
- System control sie18 201 p.89
- Outline p.89
- Main functions p.89
- Sie18 201 system control p.90
- Main functions 79 p.90
- Equalizing control in heating p.90
- Outline p.91
- Outdoor unit motorized valve low pressure cooling capacity control p.91
- Details p.91
- Capacity control p.91
- Outline p.92
- Outdoor unit motorized valve high pressure heating capacity control p.92
- Details p.92
- Outline p.93
- Details p.93
- Peak cut control p.93
- Outline p.94
- Freeze up prevention p.94
- Details p.94
- Outline p.95
- Gas shortage malfunction p.95
- Details p.95
- With the internal compressor temperature used as a substitute of the discharge pipe temperature when the discharge pipe temperature exceeds the specified level the discharge pipe control regulates the upper limit of the output frequency to prevent the internal pressure from rising this function serves the same purpose as the discharge pipe high temperature control that regulates the motorized valve p.96
- With each operation of the discharge pipe temperature malfunction operation counter the above zone judgment temperature is decreased by 2 c p.96
- Sie18 201 system control p.96
- Outline p.96
- Main functions 85 p.96
- Discharge pipe control p.96
- Details p.96
- Input current control i p.97
- Input current control p.97
- Outline p.97
- When the outside temperature doa is higher than 38 c input current upper limit value i3ch 27 a is decreased at a rate of 96 128 a c p.98
- The input current is used to control the upper limit of the operating frequency in order to maintain the temperature around the electric parts under a certain level during cooling overload condition p.98
- Similarly the input current value in controlled in inverter microcomputers to protect the inverter parts p.98
- Sie18 201 system control p.98
- Outside air temperature i3ch p.98
- Main functions 87 p.98
- Details p.98
- 27 22 27 24 27 26 27 28 27 30 27 32 27 34 27 36 27 38 27 40 25 42 24 44 22 46 21 p.98
- Outline p.99
- Input current control ii high pressure control p.99
- Details p.99
- Wet protection control i p.100
- The lower limit of operating frequency fcg is set according to following formula and diagram when the outside air temperature doa is 6 c or lower during heating operation fcg kcg1w outside air temp doa fcg7w 102 64 doa 28 p.100
- Outline p.100
- Details p.100
- When the outside air temperature is low the lower limit of operating frequency is restricted to ensure the compressor suction air humidity p.100
- Outline p.101
- Electric parts cooling and electric parts fin temperature control p.101
- Details p.101
- Outline p.102
- Differential pressure control p.102
- Details p.102
- Year round cooling only function p.103
- This function turns off the compressor based on the conditions of the outside temperature and high pressure equivalent saturation temperature to ensure compressor reliability p.103
- The year round cooling only function provides two types of shutdown function one is based on the outside temperature and high pressure equivalent saturation temperature and the other is based only on the outside temperature p.103
- The shutdown function based on the outside temperature and high pressure equivalent saturation temperature stops the operation when sufficient differential pressure cannot be ensured in the compressor the shutdown function based on the outside temperature prevent compressor operation when the temperature is outside of the operation area p.103
- Outline p.103
- Details p.103
- Outline p.104
- Nighttime low noise control p.104
- Details p.104
- Purpose of the function p.104
- Pi control p.105
- P control p.105
- Outline p.105
- I control p.105
- Warm up function p.106
- Outline p.106
- Details p.106
- This function ensures appropriate compressor oil level and dilution at startup p.107
- The following upper limit frequency control is provided at the compressor off on edge this function is inactive during defrost control p.107
- Purpose of the function p.107
- Outline p.107
- More than 2 hours after power reset p.107
- Details p.107
- Compressor protection control p.107
- Details p.108
- Purpose of the function p.108
- Outline p.108
- Fan control under normal condition p.108
- Fan control p.108
- Outline p.109
- Fan off delay control p.109
- Details p.109
- Outline of motorized valve control p.110
- Outline p.110
- Motorized valve control of outdoor unit p.110
- Outdoor unit motorized valve opening restriction p.111
- Not in capacity control during normal heating operation elv fully closed during normal cooling operation after tevgard elapsed 30 sec or more p.111
- Main functions p.111
- In capacity control during normal heating operation evl not fully closed during normal cooling operation p.111
- Evp opening restriction there are two types of evp control complete closing and completely closing with retightening evp s max opening is set to evpmax evp s min opening is set to evpmin p.111
- Evg gas pipe motorized valve opening restriction p.111
- This function restricts the opening degree of the outdoor unit motorized valves discharge bypass motorized valve gas pipe motorized valve and liquid pipe motorized valve in order to quickly stabilize and control the system p.111
- The motorized valve operates as follows when it is fully closed and at min opening when evp closes from open condition evp open condition evpmin is set as the lower limit when it closes from evpmin the next motorized valve opening degree is set to 0 pulse fully closed condition evp is in the fully closed condition from 0 pulse to evpdp pulses and the opening degree increments in the fully closed condition evpdp pulses is set as the upper limit when it opens from the evpdp condition the next valve opening degree is set to evpmin evpdp to achieve evp open condition p.111
- System control sie18 201 p.111
- Outline p.111
- Evl liquid pipe motorized valve opening restriction evl liquid pipe motorized valve p.112
- Outline p.113
- Outdoor unit motorized valve control in startup and during the number of operating room units change p.113
- Details p.113
- Outline p.114
- Outdoor unit motorized valve control during high discharge pipe temperature p.114
- Details p.114
- Outline p.115
- Outdoor units motorized valve control by target discharge pipe temperature p.115
- Outline p.116
- Cooling outdoor unit sc control p.116
- Bp unit motorized valve control p.117
- Purpose of the function p.117
- Outline p.117
- Motorized valve flow rate restriction p.117
- Bp unit motorized valve control during frequency change p.117
- Bp unit motorized valve control at startup and during the number of operating room units change p.117
- Purpose of the function p.118
- Outline p.118
- Full closing of motorized valves p.118
- Details p.118
- Control based on absolute flow rate instruction p.118
- Purpose of the function p.119
- Outline p.119
- Control based on relative flow rate instruction p.119
- Outline p.120
- Gas pipe isothermal control in cooling operation p.120
- Details p.120
- Purpose of the function p.120
- The motorized valve operating amount is determined based on deviation ega between each room unit s gas pipe temperature and of dgav after gftuyu correction and previous deviation egaz example the following example is based on room a ega dga dgav when the operating flow rate of eva is qrga qrga kpcb 0 5 ega egaz kib 0 2 ega egaz 0 5 ega egaz 0 16 ega egaz when qrga qhenc 0 2 the following condition is set qrga qhenc 0 2 nm ³ hr p.121
- When sh is higher than average opens the valve of that room unit when sh is lower than average closes the valve of that room unit p.122
- This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode p.122
- The heat exchanger temperatures and gas pipe temperatures of operating room units are detected by the gas pipe thermistors and the motorized valves flow rates are corrected so as to adjust each room unit s heat exchanger temperature and gas pipe temperature hereafter referred to as sh close to the target values p.122
- The gas pipe temperature and indoor heat exchanger temperature are detected at the time of every sampling time of 40 sec for the cooling sh control p.122
- Sh control in cooling operation p.122
- Purpose of the function p.122
- Outline p.122
- In order to prevent dew condensation in connection pipe gas pipe lower limit temperature is set as follows gas pipe lower limit temperature 0 doa 1 p.122
- However the closing operation is restricted to prevent the valve operation that results in a flow rate that exceeds a certain level at one time when the liquid pipe temperature is higher than the heat exchanger temperature the motorized valve is opened without providing the above control protection function to prevent rotor dew condensation p.122
- Details p.122
- Purpose of the function p.124
- Outline p.124
- Main functions 113 p.124
- However the valve operating amount is restricted to prevent a flow rate that exceeds a certain level at one time for improvement of stability and convergibility performance p.124
- When sh is higher than target sc opens the valve of that room unit when sh is lower than target sc closes the valve of that room unit p.124
- To ensure appropriate refrigerant distribution to each room unit each room unit s liquid pipe temperature and heat exchanger intermediate temperature are detected and the motorized valve opening degrees are corrected so sc reaches the target sc determined based on the supply capacity and the temperature difference between the discharge pipe temperature and target discharge pipe temperature p.124
- This function ensures appropriate refrigerant distribution when room units are operating in the heating mode p.124
- The function serves the following two main purposes 1 appropriate refrigerant distribution to each room unit in the case of heating sc control 2 the motorized valves of only operating room units are regulated in the case of heating sc control 1 the motorized valves of all room units including non operating units are operated 2 determination of the location accumulator receiver non operating room units operating room units to collect refrigerant in accordance with the connection pattern extended piping single room connection p.124
- The determination of the location accumulator receiver non operating room units operating room units to collect refrigerant is determined in accordance with the connection pattern extended piping single room connection p.124
- Sie18 201 system control p.124
- Sc control in heating operation p.124
- The heat exchanger intermediate temperature and liquid pipe temperature are detected at every sampling time of 60 sec of the heating sc control the range of target sc 3 c sc1 8 c p.125
- System control sie18 201 p.125
- Main functions p.125
- Details p.125
- Current sc evr closed target sc current sc evr opened p.125
- Purpose of the function p.126
- Outline p.126
- Heat exchanger isothermal control in heating operation p.126
- Details p.126
- When the discharge pipe temperature exceeds a certain level during compressor operation this function opens the motorized valve to return the refrigerant to a low pressure level in order to cool the compressor with refrigerant and lower the discharge temperature p.127
- Bp unit motorized valve control in high discharge pipe temperature p.127
- Purpose of the function p.128
- Outline p.128
- Inter bp units heating heat exchanger isothermal control p.128
- Details p.128
- Purpose of the function p.129
- Outline p.129
- Inter bp units gas pipe isothermal control p.129
- Details p.129
- Purpose of the function p.130
- Outline p.130
- Bp unit motorized valve control by target discharge pipe temperature p.130
- Purpose of the function p.131
- Outline p.131
- Details p.131
- Way valve switching p.131
- Way valve operation security p.131
- Way valve operation p.131
- Purpose of the function p.132
- Outline p.132
- Jis mode p.132
- Details p.132
- When the pump down button is pressed the following control is provided to collect refrigerant in the receiver p.133
- System control sie18 201 p.133
- Pump down operation p.133
- Outline p.133
- Main functions p.133
- Details p.133
- Main functions 123 p.134
- Freeze up prevention control based on the freeze up prevention status information sent from the bp unit indoor unit the zones are produced to prevent freezing up of the indoor heat exchanger p.134
- Even if the stop zone is reached the zone remains as the drooping zone for 540 sec p.134
- The zones for skyair indoor unit peak cut control is produced in the bp unit p.134
- Skyair indoor unit peak cut zone p.134
- Sie18 201 system control p.134
- Protection control of skyair indoor units p.134
- Peak cut control based on the heat exchanger temperature information sent from the indoor unit the zones are produced to prevent abnormal rise of the high pressure p.134
- Monitoring function during skyair indoor unit heating thermostat off p.135
- Abnormality processing p.135
- Part 6 flow of refrigerant p.136
- Flow of refrigerant 26 p.136
- Flow of refrigerant sie18 201 p.137
- Flow of refrigerant p.137
- Productive operation patterns on stopping the cooling operation on starting the cooling operation when cooling standby operation has not completed yet p.138
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.138
- Full close p.138
- Flow of refrigerant 127 p.138
- Evl 120 pls evp full open evg full close evu full close evt full close evh full close p.138
- Standby operation cooling p.138
- Sie18 201 flow of refrigerant p.138
- Securing the reliability oil dilution proof in particular of the compressor by the liquid return to accumulator when starting the cooling operation the unit drains the refrigerant in the accumulator and storage the liquid refrigerant in the condenser and receiver after stopping the cooling operation consequently fully open the evp to evaporate the liquid refrigerant in the accumulator fully close each indoor unit motorized valves evu evt fully open evl in order to storage the liquidrefrigerant in the receiver while fully close evg p.138
- When conducting the equalizing control after completing the standby operation fully close each room motorized valves evu evt and evg evl and fully open evp only for the equalizing control p.139
- Productive operation patterns when the cooling standby operation has been completed p.139
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.139
- Flow of refrigerant sie18 201 p.139
- Flow of refrigerant p.139
- Evl 100 pls evp full open evg full close evu full close evt full close evh full close p.139
- Equalizing control cooling p.139
- Productive operation patterns oil collecting operation in cooling p.140
- Oil return operation cooling p.140
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.140
- Flow of refrigerant 129 p.140
- Evl 100 450 pls evp 0 200 pls evg full open or 60 100 pls evu ordinal control evt ordinal control close evh full open p.140
- 1 oil collecting operation in main pipe this operation aims to collect oil in the main gas pipe full closing evp evl and increasing the operating frequency for enlarging the gas flow rate result the drop of low pressure there fore set the evh to specified opening to conduct oil collecting operation 2 oil collecting operation of non operating room bp unit in case other bp has operating room unit s and rest bp with non operating room units continues for 90 minutes for the purpose of collecting oil in the liquid refrigerant stagnated between refnet joint and bp unit fully open evh of bp unit of the non operating room to conduct oil collecting operation p.140
- Sie18 201 flow of refrigerant p.140
- Productive operation patterns cooling 1 room operation 2 kw 1 room operation with low outside air temperature p.141
- Low outside air temperature cooling p.141
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.141
- Flow of refrigerant sie18 201 p.141
- Flow of refrigerant p.141
- Evl sc control not fully closed evp freeze up protection control evg target discharge pipe temperature control evu sh control evt full close evh full close p.141
- A pressure difference must be kept in cooling mode with low outside temperature in order to maintain the compressor reliability to ensure such pressure difference keep the evl fully open and let the refrigerant stay in the outdoor heat exchanger system control motorized valve evg each room distribution control motorized valve evu p.141
- Productive operation patterns all room operation p.142
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.142
- Full close p.142
- Flow of refrigerant 131 p.142
- Evl sc control full close evp full close evg 0 to 100 pls evu target discharge pipe temperature control gas pipe isothermal control evt full close evh full close p.142
- Conditions evl is fully opened via outdoor unit sc control p.142
- As the refrigerant circuit is in the status of no receiver provided the same control as the conventional super multi type is conducted system control motorized valve evu each room distribution control motorized valve evu p.142
- All room operation cooling p.142
- Sie18 201 flow of refrigerant p.142
- Productive operation patterns status of no surplus refrigerant in multi room operation p.143
- Multi room operation no surplus refrigerant cooling p.143
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.143
- Flow of refrigerant sie18 201 p.143
- Flow of refrigerant p.143
- Evl sc control full close evp full close evg 0 to 100 pls evu target discharge pipe temperature control gas pipe isothermal control evt full close evh full close p.143
- Conditions evl is fully opened via outdoor unit sc control p.143
- As the refrigerant circuit is in the status of no receiver provided the same control as the conventional super multi type is conducted system control motorized valve evu each room distribution control motorized valve evu p.143
- Productive operation patterns partial load operation p.144
- Multi room operation cooling with surplus refrigerant p.144
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.144
- Flow of refrigerant 133 p.144
- Evl sc control not fully closed evp full close evg target discharge pipe temperature control evu sh control evt full close evh full close p.144
- Conditions evl is not fully closed via outdoor unit sc control p.144
- As the surplus refrigerant is treated with the receiver opening evl stagnates the liquid refrigerant in the receiver the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant amount in the receiver via evg bp motorized valve is exclusively used for the distribution control and evu is used for sh control system control motorized valve evg each room distribution control motorized valve evu p.144
- Sie18 201 flow of refrigerant p.144
- Room operation indoor unit with large capacity cooling p.145
- Productive operation patterns 1 room operation with large capacity indoor unit p.145
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.145
- Flow of refrigerant sie18 201 p.145
- Flow of refrigerant p.145
- Evl sc control not fully closed evp full close evg target discharge pipe temperature control evu sh control evt full close evh full close p.145
- Conditions evl is not fully closed via outdoor unit sc control p.145
- As the surplus refrigerant is treated with the receiver opening evl dwells the liquid refrigerant in the receiver the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant amount in the receiver via evg bp motorized valve is exclusively used for the distribution control and evu is used for sh control system control motorized valve evg each room distribution control motorized valve evu p.145
- 1 room operation indoor unit with large capacity cooling p.145
- Productive operation patterns 1 room operation 2 kw 1 room operation p.146
- In case the freeze up protection control stays within the drooping zone even when the operation frequency becomes the lower limit frequency increasing the opening of evp motorized valve conducts evp control to stabilize at the no change zone as the surplus refrigerant is treated with the receiver opening evl stagnates the liquid refrigerant in the receiver with evl open the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant amount in the receiver via evg bp motorized valve is exclusively used for the distribution control and evu is used for sh control system control motorized valve evg each room distribution control motorized valve evu p.146
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or ga p.146
- Flow of refrigerant 135 p.146
- Evl sc control not fully closed evp freeze up protection control evg target discharge pipe temperature control evu sh control evt full close evh full close p.146
- Conditions when the operating frequency droops at the minimum frequency with freeze up protection control p.146
- Sie18 201 flow of refrigerant p.146
- Room operation indoor unit with small capacity 2 kw cooling p.146
- When conducting the equalizing control after completing the standby operation fully open each room motorized valves evu evt and evg evl and fully open evp only for the equalizing control p.147
- Standby operation heating p.147
- Securing the reliability oil dilution proof in particular of the compressor by the liquid return to accumulator when starting the heating operation the unit drains the refrigerant in the accumulator and stagnates the liquid refrigerant in the condenser and receiver after stopping the heating operation consequently fully open evp to evaporate the liquid refrigerant in the accumulator fully close each indoor unit motorized valves evu evt fully open evg to feed the liquid refrigerant in the receiver and then fully close evl p.147
- Productive operation patterns on stopping the heating operation on starting the heating operation when the standby operation has not been completed yet before unit operation stop p.147
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.147
- Full open p.147
- Full close p.147
- Flow of refrigerant sie18 201 p.147
- Flow of refrigerant p.147
- Evg full open evl full close evp full open evu full close evt full close evh full close p.147
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.148
- Flow of refrigerant 137 p.148
- Evl full close evp full open full close 150 pls full open evg 100 pls evu full close evt full close evh full close p.148
- Equalizing control heating p.148
- When conducting the equalizing control after completing the standby operation fully close each room motorized valves evu evt and evg evl and fully open evp only for the equalizing control p.148
- Sie18 201 flow of refrigerant p.148
- Productive operation patterns when the heating standby operation has been completed p.148
- The oil collecting operation is conducted in the reverse cycle cooling cycle p.149
- Productive operation patterns oil collecting operation in heating p.149
- Oil return operation heating p.149
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.149
- Flow of refrigerant sie18 201 p.149
- Flow of refrigerant p.149
- Evg full close evl full close evp full open full close 150 pls full open evu fixed opening 190pls evt full close evh fixed flow rate setting p.149
- Sie18 201 flow of refrigerant p.150
- Productive operation patterns in defrost operation p.150
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.150
- Flow of refrigerant 139 p.150
- Evp full open 150 pls full open evg full close 70 pls full close evl full open full close evu fixed opening 190 pls evt full close evh fixed opening 100 pls p.150
- Defrost operation p.150
- The defrost operation of outdoor unit heat exchanger is conducted in the reverse cycle cooling cycle p.150
- Productive operation patterns all room operation p.151
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.151
- Flow of refrigerant sie18 201 p.151
- Flow of refrigerant p.151
- Evg full close reverse target discharge pipe temperature control evl target discharge pipe temperature control evp full close evu heating sc control evh full close evt target discharge pipe temperature control p.151
- Conditions 1 unit is not in the capacity control the operating frequency does not droop to the minimum frequency by high pressure control system protection 2 all room units in operation p.151
- As the refrigerant circuit is in the status of no receiver provided the same control as the conventional multi type m 5 is conducted system control motorized valve evt evu each room distribution control motorized valve evu p.151
- All room operation heating p.151
- Sie18 201 flow of refrigerant p.152
- Productive operation patterns multi room operation with non operating room unit p.152
- Multi room operation with non operating room unit heating p.152
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.152
- Flow of refrigerant 141 p.152
- Evg full close reverse target discharge pipe temperature control evl target discharge pipe temperature control with upper limit of opening evp full close evu target discharge pipe temperature control sc control evt target discharge pipe temperature control evh full close p.152
- Conditions 1 not in the capacity control the operating frequency does not droop to the minimum frequency by high pressure control system protection 2 not in all room unit operation 3 all non operating room units motorized valve opening is not at minimum in case that the conditions 1 2 and 3 are met p.152
- The defrost operation of outdoor unit heat exchanger is conducted in the reverse cycle cooling cycle p.152
- Productive operation patterns partial load operation p.153
- Multi room operation heating p.153
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.153
- Flow of refrigerant sie18 201 p.153
- Flow of refrigerant p.153
- Evg reverse target discharge pipe temperature control evl target discharge pipe temperature control evp full close evu sc control target discharge pipe temperature control evt target discharge pipe temperature control min opening evh full close p.153
- Conditions 1 not in the capacity control the operating frequency does not droop to the minimum frequency by high pressure control system protection 2 in all room unit operation 3 all non operating room units motorized valve opening is minimum in case that the conditions 1 and 2 or 3 are met p.153
- As the surplus refrigerant is treated with the receiver opening evg stagnates the refrigerant condensed through the auxiliary heat exchanger providing a motorized valve at the downstream side of the auxiliary heat exchanger clears the heat resistant temperature of the motorized valve the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant amount in the receiver via evl bp motorized valve is exclusively used for the distribution control and evu for sc control system control motorized valve evl evt each room distribution control motorized valve evu p.153
- Room operation indoor unit with large capacity heating p.154
- Productive operation patterns heating 1 room operation with large indoor unit capacity p.154
- In case the peak cut control stays within the drooping zone even when the operating frequency becomes the lower limit frequency increasing the opening of evg motorized valve increases the condensing capacity of auxiliary heat exchanger and conducts evg control to stabilize the unit operation at the no change zone as the surplus refrigerant is treated with the receiver opening evl dwells the liquid refrigerant in the receiver with opened evg the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant in the receiver via evl bp motorized valve is exclusively used for the distribution control evu and evt are operated by sc control system control motorized valve evl evt each room distribution control motorized valve evu p.154
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.154
- Flow of refrigerant 143 p.154
- Evg high pressure system control evl target discharge pipe temperature control evp full close evu sc control target discharge pipe temperature control evt target discharge pipe temperature control evh full close p.154
- Conditions 1 in capacity control capacity control range small when the operating frequency droops to the minimum frequency by the protective function of high pressure control system p.154
- Sie18 201 flow of refrigerant p.154
- Room operation indoor unit with small capacity 2 kw heating p.155
- Productive operation patterns heating 1 room operation 2 kw 1 room operation p.155
- In case the peak cut control stays within the drooping zone even when the operating frequency becomes the lower limit frequency although evg motorized value is fully opened the peak cut control is still remaining in drooping zone conduct peak cut control by opening evp to obtain a stable unit operation in change zone with opened evg the entire system control suction overheat is conducted by the adjustment of the surplus refrigerant in the receiver via evl bp motorized valve is exclusively used for the distribution control evu and evt are operated by sc control system control motorized valve evl evt each room distribution control motorized valve evu p.155
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant p.155
- Flow of refrigerant sie18 201 p.155
- Flow of refrigerant p.155
- Evg 0 150 pls evl target discharge pipe temperature control evp high pressure system control evu sc control target discharge pipe temperature control evt target discharge pipe temperature control evh full close p.155
- Conditions 1 in capacity control capacity control range large when the operating frequency droops to the minimum frequency with high pressure control system protection function control p.155
- Remote controller 46 p.156
- Part 7 operations p.156
- Remote controller sie18 201 p.157
- Remote controller p.157
- Operations p.157
- Open the cover p.157
- Ftx25 35j p.157
- Wireless remote controller p.157
- Sensor p.157
- Fvx25 35kz p.158
- Ftxd25 35kz p.159
- Ftxd50 60 71j p.160
- Remote controller sie18 201 p.161
- Operations p.161
- On off p.161
- Flx50 60j p.161
- Sie18 201 remote controller p.162
- Operations 151 p.162
- Cdx25 35 50 60j p.162
- Arc423a13 arc423a14 for cdk25 35 50 60havec cdx25 35 50 60havec p.162
- Operations p.163
- On off p.163
- Cdx25 35 50 60ha p.163
- Remote controller sie18 201 p.163
- Sie18 201 remote controller p.164
- Operations 153 p.164
- Open the cover p.164
- Flx25 35h p.164
- Arc423a9 arc423a10 for flk25 35 50 60hvec flx25 35 50 60hvec p.164
- Fhyc35 45 60 71b7v1 optional accessory p.165
- Brc7c513wc p.165
- Temperature setting button p.166
- Display programmed time p.166
- Sie18 201 remote controller p.166
- Display operation mode p.166
- Receiver p.166
- Display fan speed p.166
- Programming time button p.166
- Display air flow flap p.166
- Operations 155 p.166
- Display p.166
- Operation mode selector button p.166
- Defrost lamp orange p.166
- Operating indicator lamp red p.166
- Air flow direction adjust button p.166
- On off button p.166
- Air filter cleaning time indicator lamp red p.166
- Names and functions of the operating section fig 1 2 p.166
- Inspection test operation button p.166
- Inspection test operation p.166
- Filter sign reset button p.166
- Fan speed control button p.166
- Emergency operation switch p.166
- Timer reserve cancel button p.166
- Timer mode start stop button p.166
- Display signal transmission p.166
- Timer indicator lamp green p.166
- Display set tempera ture p.166
- Fhyc35 45 60 71b optional accessory p.167
- Wired remote controller p.167
- Part 8 operating test p.168
- Operating test 58 p.168
- Method of field set 64 p.168
- Operating test p.169
- Outdoor unit statu p.170
- Operating test 159 p.170
- Normal led p.170
- Initialize sw p.170
- Forced operation mode select sw p.170
- Digital service monitor p.170
- Address select sw p.170
- Test operation sw p.170
- Silent select sw p.170
- Sie18 201 operating test p.170
- Service monitor rayout on pcb p.170
- Pump down sw p.170
- Operating test sie18 201 p.171
- Operating test p.171
- Initialize setting p.171
- Test operation switch sw7 p.172
- Test operation switch p.172
- Digital display p.172
- Blinking p.172
- Pump down operation switch sw4 p.173
- Pump down operation switch p.173
- Digital display p.173
- After pd_ blinks in the digital display the lp low pressure indicator activates p.173
- System layout p.174
- Record of the installation position p.174
- Indoor unit p.174
- Be sure to enter the system unit installation position p.174
- Wired remote controller p.175
- Procedure p.175
- Method of field set p.175
- Field setting p.175
- Wireless remote controller p.176
- When in the normal mode push the button for a minimum of four seconds and the field set mode is entered 2 select the desired mode no with the button 3 push the button and select the first code no 4 push the button and select the second code no 5 push the button and the present settings are set 6 push the button to return to the normal mode p.176
- Sie18 201 method of field set p.176
- Procedure p.176
- Operating test 165 p.176
- Note if optional accessories are mounted on the indoor unit the indoor unit setting may have to be changed refer to the instruction manual optional hand book for each optional accessory p.176
- Note a heat pump type indoor unit is used for cooling only twin system in case of using ceiling mounted cassette and ceiling suspended types p.176
- Initial setting contents p.176
- To set the filter sign time to filter contamination heavy for all units in a group set mode no to 10 setting switch no to 0 and setting position no to 02 p.177
- Notes 1 setting is made in all units in a group to set for individual indoor units or to check the setting use the mode nos with 2 in upper digit in parentheses 2 the setting position no is set to 01 at the factory except for the following cases in which 02 is set setting of air flow direction adjustment range automatic restart after power outage remote control thermostat filter sign indication only for ceiling mounted duct type p.177
- Local setting mode no p.177
- Example p.177
- When installing sky air simultaneous operation multi unit set to either twin or triple only when the factory setting is changed it is necessary to make a setting using a remote controller 4 for further details see the installation instruction 5 since drafts may result carefully select the installation location 6 when power returns units resume the settings made before the power outage p.178
- Setting table p.178
- Set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 p.178
- Make the following setting according to the ceiling height the setting position no is set to 01 at the factory p.178
- In the case of fhyc 35 to 71 class p.178
- If switching the filter sign on time set as given in the table below set time p.178
- Filter sign setting p.178
- Do not set any items other than those listed in the above table 8 functions that indoor units are not equipped with will not be displayed 9 when returning to normal mode 88 may be displayed on the lcd section of the remote controller due to initialization operation p.178
- Detailed explanation of setting modes p.178
- Ceiling type setting switch for air flow adjustment p.178
- Caution when auto restart after power outage reset is set be sure to turn off air conditioners then cut off the power supply before conducting maintenance inspection and other work if the power supply is cut off with the power switch left on air conditioners will automatically start operating when the power supply is turned on p.178
- Air flow direction setting p.178
- Wireless setting address and main sub setting p.179
- When using both a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to main therefore set the main sub switch ss1 of the receiver to sub p.179
- Through the small opening on the back of the receiver set the wireless address switch ss2 on the printed circuit board according to the table below p.179
- Setting the receiver p.179
- If several wireless remote controller units are used together in the same room including the case where both group control and individual remote controller control are used together be sure to set the addresses for the receiver and wireless remote controller for group control see the attached installation manual for the indoor unit if using together with a wired remote controller you have to change the main sub setting or the receiver p.179
- Explanation p.179
- After completing setting seal off the opening of the address switch and the main sub switch with the attached sealing pad p.179
- When the indoor is being operating by outside control central remote controller etc it sometimes does not respond to on off and temperature setting commands from this remote controller check what setting the customer wants and make the multiple setting as shown below p.180
- Setting the address of wireless remote controller it is factory set to 1 p.180
- Multiple settings a b p.180
- Address can be set from 1 to 6 but set it to 1 3 and to same address as the receiver the receiver does not work with address 4 6 4 press the button to enter the setting 5 hold down the button for at least 1 second to quit the field set mode and return to the normal display p.180
- 1 hold down the button and the button for at least 4 seconds to get the field set mode indicated in the display area in the figure at right 2 press the button and select a multiple setting a b each time the button is pressed the display switches between a and b 3 press the button and button to set the address p.180
- Setting table p.181
- Precautions set the unit no of the receiver and the wireless remote controller to be equal if the setting differs the signal from the remote controller cannot be transmitted 1 do not use any settings not listed in the table 2 for group control with a wireless remote controller initial settings for all the indoor units of the group are equal for group control refer to the installation manual attached to the indoor unit for group control p.181
- Fan speed off when thermostat is off p.181
- After setting p.181
- When the cool heat thermostat is off you can stop the indoor unit fan by switching the setting to fan off used as a countermeasure against odor for barber shops and restaurants p.181
- When a ultra long life filter is installed the filter sign timer setting must be changed p.181
- Ultra long life filter sign setting p.181
- Stick the unit no label at decoration panel air discharge outlet as well as on the back of the wireless remote controller p.181
- Setting table p.182
- Procedure p.182
- Main sub setting when using 2 remote controllers p.182
- Fan speed changeover when thermostat is off p.182
- Operating test p.183
- Name and function of parts p.183
- Method of field set sie18 201 p.183
- Interface adaptor for room airconditioner krp928a1s p.183
- Components p.183
- Central remote controller p.183
- Be sure to follow all theprecautions below they are all important for ensuring safety p.183
- Ac power supply p.183
- System structure and wiring p.183
- Safety precautions 3 compatible models p.183
- Overview and features p.183
- Sie18 201 method of field set p.184
- Settings p.184
- Please refer to operating installations of each controllers p.184
- Operating test 173 p.184
- Function p.184
- In heating operation no warm air may come out temporarily this is to protect the outdoor unit not a failure at this point defrost is displayed on the wired type remote controller p.185
- In heating operation fan operation cannot be performed if the fan operation is selected the remote controller will display it as a current mode however the fan operation will not be performed p.185
- If you use the indoor unit listed below and have it connected to the multi type outdoor unit rmk140j rmx140j be sure to read this precautions use the furnished remote controller for the ceiling mounted cassette type the remote controller is an option choose one of the following remote controllers 1 wired type brc1c517 c 2 wireless type brc7c512w c h p p.185
- Applicable model series p.185
- 3 skyair indoor units p.185
- 2 floor ceiling suspended dual type units p.185
- 1 thermostat off after the room temperature reaches the set temperature indoor units enter the operation stand by state p.185
- 1 all indoor units p.185
- With the thermostat off 1 the fan may start stop automatically this is not a failure at this point defrost is displayed on the wired type remote controller p.185
- With the thermostat off 1 the fan may start stop automatically this is not a failure p.185
- These cases are not troubles p.185
- Precautions for rmk140j rmx140j outdoor unit users p.185
- Outside air temperature for operation p.185
- In simultaneous operation in two or more rooms when heating operation is performed in one room cooling operation cannot be performed in other rooms the mode in the room where operation began first is given priority p.185
- In heating operation when all indoor units are stopped the outdoor unit stops its operation automatically after 5 minutes this is a part of preparation process for the next operation not a failure p.185
- Troubleshooting split type indoor unit 76 p.186
- Troubleshooting skyair indoor unit 95 p.186
- Troubleshooting outdoor unit related 09 p.186
- Part 9 service diagnosis p.186
- Bp unit trouble diagnosis 59 p.186
- Troubleshooting with the operation lamp p.187
- Troubleshooting split type indoor unit p.187
- Location of operation lamp p.187
- Troubleshooting with the led indication p.188
- Service check function p.189
- Press the timer cancel button repeatedly until a continuous beep is produced the code indication changes in the sequence shown below and notifies with along beep p.189
- Note 1 a short beep and two consecutive beeps indicate non corresponding codes 2 to cancel the code display hold the timer cancel button down for 5 seconds the code display also cancels itself if the button is not pressed for 1 minute p.189
- In the arc423a series the temperature display sections on the main unit indicate corresponding codes 1 when the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section p.189
- Arc423 series ftx25 35j series p.189
- Error codes and description of fault p.190
- Code indication on the remote controller p.190
- Troubleshooting p.191
- Indoor units p.191
- Ftx25 35 j series p.191
- Cdx25 60h series p.191
- 5 5 5 c9 p.191
- 5 5 5 c p.191
- 5 5 5 a6 p.191
- 5 5 5 a5 p.191
- Faulty pcb p.192
- Troubleshooting detail p.192
- Supposed causes p.193
- Remote controller display p.193
- Operation halt due to the freeze protection function p.193
- Method of malfunction detection p.193
- Malfunction decision conditions p.193
- Indoor unit led display p.193
- Troubleshooting p.194
- Sie18 201 troubleshooting split type indoor unit p.194
- Service diagnosis 183 p.194
- Check no refer to p 54 p.194
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.194
- Operation halt due to fan motor ac motor or related abnormality p.195
- Method of malfunction detection p.195
- Malfunction decision conditions p.195
- Indoor unit led display p.195
- Troubleshooting p.195
- Supposed causes p.195
- Remote controller display p.195
- Troubleshooting p.196
- Supposed causes p.196
- Remote controller display p.196
- Operation halt due to detection of thermistor or related abnormality p.196
- Method of malfunction detection p.196
- Malfunction decision conditions p.196
- Indoor unit led display p.196
- C4 c5 c9 ca p.196
- Remote controller display p.197
- Method of malfunction detection p.197
- Malfunction decision conditions p.197
- Indoor unit led display p.197
- Faulty indoor unit pcb p.197
- Troubleshooting p.197
- Supposed causes p.197
- Faulty indoor unit pcb p.198
- When the microcomputer program does not function properly 2 when the indoor unit determines that the indoor unit does not properly receive signals transmitted by the outdoor unit in indoor outdoor signal communications p.199
- Troubleshooting p.199
- The proper program operation of the microcomputer is checked by the program 2 in indoor outdoor signal communications the indoor unit determines whether the outdoor unit receives signals properly by detecting signals transmitted by the outdoor unit to the indoor unit p.199
- Supposed causes p.199
- Remote controller display p.199
- Method of malfunction detection p.199
- Malfunction decision conditions p.199
- Indoor unit led display p.199
- Faulty power supply or indoor unit pcb for ftk x 25 35j p.199
- Display disabled by fault power supply faulty signal transmitting receiving circuit in indoor printed circuit boards 1 and 2 microcomputer program is in abnormal condition due to an external factor noise momentary voltage drop momentary power failure etc faulty indoor unit pcbs 1 and 2 p.199
- Malfunction decision conditions p.200
- Indoor unit led display p.200
- Faulty power supply or indoor unit pcb for ftk x 50 60h cdk x 25 60h p.200
- Supposed causes p.200
- Remote controller display p.200
- Method of malfunction detection p.200
- Troubleshooting split type indoor unit sie18 201 p.201
- Troubleshooting p.201
- Service diagnosis p.201
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.201
- Troubleshooting p.202
- Sie18 201 troubleshooting split type indoor unit p.202
- Service diagnosis 191 p.202
- Check no 6 refer to p 58 p.202
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.202
- Remote controller display p.203
- Method of malfunction detection p.203
- Malfunction decision conditions p.203
- Indoor unit led display p.203
- Troubleshooting p.203
- Supposed causes p.203
- Signal transmission error between indoor and outdoor units p.203
- Supposed causes p.204
- Signal transmission error between indoor unit and remote controller p.204
- Remote controller display p.204
- Method of malfunction detection p.204
- Malfunction decision conditions p.204
- Indoor unit led display p.204
- Troubleshooting split type indoor unit sie18 201 p.205
- Troubleshooting p.205
- Service diagnosis p.205
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.205
- Troubleshooting skyair indoor unit p.206
- The inspection test button p.206
- Explanation p.206
- Troubleshooting skyair indoor unit sie18 201 p.207
- Service diagnosis p.207
- Self diagnosis by wired remote controller p.207
- If operation stops due to malfunction the remote controller s operation led blinks and malfunction code is displayed even if stop operation is carried out malfunction contents are displayed when the inspection mode is entered the malfunction code enables you to tell what kind of malfunction caused operation to stop see page 200 for malfunction code and malfunction contents p.207
- Explanation p.207
- Up button down button p.208
- Procedure p.208
- Fault diagnosis by wireless remote controller p.208
- Troubleshooting skyair indoor unit sie18 201 p.209
- Service diagnosis p.209
- Note 1 if led b is off the transmission wiring between indoor and outdoor unit may be incorrect or disconnected before performing the previously described troubleshooting check the transmission wiring 2 troubleshoot by turning off the power supply for a minimum of 5 seconds turning it back on and then rechecking the led display p.210
- Led on p.210
- Led off p.210
- Led blinks no connection with troubleshooting p.210
- General precautions when performing maintenance p.210
- Foreword p.210
- When disconnecting the fasten terminal from the pc board hold down the pc board with your finger and do not apply excessive force also do not hold the neck of the fasten terminal and pull the lead wire 2 do not use a mega tester on the secondary side transformer secondary side of the electronic circuitry 3 even when not energized beware of static electricity when touching parts or pattern if handling pc board when dry winter be sure to discharge the electrostatic charge by grounding do not touch any other grounded metal parts with your fingers p.210
- Troubleshooting can be carried out by service monitor led green blinks when normal p.210
- Troubleshooting by led on the indoor unit s p.210
- Troubleshooting by remote controller display led display p.211
- Malfunction code and led display table p.211
- Indoor unit p.211
- Explanation for symbols p.211
- Troubleshooting detail p.212
- Failure of indoor unit pc board p.212
- Supposed causes p.213
- Remote controller display p.213
- Method of malfunction detection p.213
- Malfunction of drain water level system float type p.213
- Malfunction decision conditions p.213
- Applicable models p.213
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.214
- Troubleshooting p.214
- Sie18 201 troubleshooting skyair indoor unit p.214
- Service diagnosis 203 p.214
- Indoor unit fan motor lock p.215
- Swing flap motor malfunction lock p.216
- Troubleshooting p.217
- Supposed causes p.217
- Remote controller display p.217
- Operation and 1 when the capacity code is not contained in the pc board s memory and the capacity setting adaptor is not connected 2 when a capacity that doesn t exist for that unit is set p.217
- Note capacity is factory set in the data ic on the pc board a capacity setting adaptor that matches the capacity of the unit is required in the following case if the indoor pc board installed at the factory is for some reason changed at the installation site the capacity will not be contained in the replacement pc board if you connect a capacity setting adaptor to a pc board in which the capacity is memorized the capacity setting for the pc board will become the capacity setting of the adaptor priority of capacity setting adaptor p.217
- Method of malfunction detection p.217
- Malfunction decision conditions p.217
- Failure of capacity setting adaptor connection failure of indoor unit pc board p.217
- Failure of capacity setting p.217
- Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the ic memory on the indoor unit pc board and whether the value is normal or abnormal is determined p.217
- Applicable models p.217
- When the heat exchanger thermistor becomes disconnected or short circuited while the unit is running p.218
- Troubleshooting p.218
- Thermistor temperature and resistance conversion table p.218
- Supposed causes p.218
- Remote controller display p.218
- Method of malfunction detection p.218
- Malfunction of heat exchange temperature sensor system p.218
- Malfunction detection is carried out by temperature detected by heat exchanger sensor p.218
- Malfunction decision conditions p.218
- Failure of the sensor itself broken or disconnected wire failure of electronic circuitry indoor unit pc board failure of connector contact p.218
- Applicable models p.218
- All indoor unit models p.218
- Malfunction decision conditions p.219
- Failure of the sensor itself broken or disconnected wire failure of indoor unit pc board failure of connector contact p.219
- Applicable models p.219
- Aii indoor unit models p.219
- When the suction air temperature sensor s thermistor becomes disconnected or short circuited while the unit is running p.219
- Troubleshooting p.219
- Thermistor temperature and resistance conversion table p.219
- Supposed causes p.219
- Remote controller display p.219
- Method of malfunction detection p.219
- Malfunction of suction air temperature sensor system p.219
- Malfunction detection is carried out by temperature detected by suction air temperature sensor p.219
- Troubleshooting outdoor unit related p.220
- Troubleshooting p.220
- The unit runs but doesn t cool heat the room p.220
- Supposed causes p.220
- Incorrect temperature setting unconnectable models clogged air filter improper load for the capacity excessively long refrigerant pipe faulty installation of indoor unit outdoor unit clogged refrigerant circuit etc gas shortage stop valve closed evn malfunction evh malfunction evp malfunction p.220
- Check no refer to p 55 p.220
- Check no refer to p 49 p.220
- Service diagnosis p.221
- Troubleshooting outdoor unit related sie18 201 p.221
- Troubleshooting p.221
- Trouble daignosis p.222
- Sie18 201 troubleshooting outdoor unit related p.222
- Service diagnosis 211 p.222
- Seg display on the outdoor p c board p.222
- 7 seg display on the outdoor p c board p.222
- Supposed causes p.223
- Outdoor unit indication p.223
- Method of malfunction detection p.223
- Malfunction decision conditions p.223
- High pressure malfunction p.223
- Faulty high pressure switch disconnection of high pressure switch s harness faulty connectors connection of high pressure switch dirty indoor unit heat exchanger faulty outdoor unit fan over charged with refrigerant motorized valve clogged p.223
- Continuity of the high pressure switch is detected by the safety device circuitry p.223
- Check no refer to p 50 p.223
- Check no refer to p 49 p.223
- When hps malfunction is generated 4 times the system shuts down p.223
- Troubleshooting detail p.223
- Troubleshooting p.223
- The 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation p.223
- Compressor lock p.224
- When a fan lock overcurrent is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation p.225
- Troubleshooting p.225
- Supposed causes p.225
- Overcurrent is detected by the signal from driver p.225
- Outdoor unit indication p.225
- Method of malfunction detection p.225
- Malfunction decision conditions p.225
- Interference by foreign matters with propeller faulty fan pc board faulty fan motor p.225
- Fan lock overcurrent p.225
- Fan lock is detected using the voltage signal given to the fan and number of turns of the fan motor p.225
- Check no refer to p 50 p.225
- When the fan ran with 30rpm or less continuously for 6 seconds in the waveform output when ocp signal was sent from the fan driver p.225
- When the inverter input current of 28a or more continued for 2 seconds p.226
- When an inv input current error is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation p.226
- Troubleshooting p.226
- Supposed causes p.226
- Outdoor unit indication p.226
- Operation halt due to detection of inv input current error p.226
- Method of malfunction detection p.226
- Malfunction decision conditions p.226
- Inv input current error is detected using inv input current detected by ct p.226
- Faulty wiring connection of filter pc board and control pc board faulty compressor overcurrent due to faulty pc board incorrect detection due to faulty pc board short circuit p.226
- Check no refer to p 53 p.226
- Check no refer to p 52 p.226
- Check no refer to p 51 p.226
- Check no refer to p 49 p.226
- Detection by checking continuity and lack of connector p.227
- Troubleshooting p.227
- Supposed causes p.227
- Outdoor unit indication p.227
- Note the applicable part of motorized valve is displayed via rotary switch 01 p.227
- Method of malfunction detection p.227
- Malfunction of electronic expansion valve p.227
- Malfunction is determined by no common voltage applied when turning the power supply on p.227
- Malfunction decision conditions p.227
- Faulty electronic expansion valve faulty harness of electronic expansion valve incorrect connectors connection of electronic expansion valve outside cause noise etc p.227
- Troubleshooting p.228
- Supposed causes p.228
- Outdoor unit indication p.228
- Operation halt due to discharge pipe temperature control p.228
- Method of malfunction detection p.228
- Malfunction decision conditions p.228
- Lp drop error p.229
- When the value of lp sensor was kept at lower level for a certain time range after the certain time range passed since the compressor started p.229
- When the value of lp sensor was kept at 0kg cm ² g or less for a certain time range after tlpgd period 15 seconds when cooling 150 seconds when heating passed since the compressor started p.229
- Troubleshooting p.229
- Supposed causes p.229
- Outdoor unit indication p.229
- Method of malfunction detection p.229
- Malfunction of lp sensor faulty contact of lp sensor connector gas shortage heating operation under low outside air temperature beyond the operative area p.229
- Malfunction decision conditions p.229
- Troubleshooting p.230
- Supposed causes p.230
- Outdoor unit indication p.230
- Method of malfunction detection p.230
- Malfunction of high pressure switch system p.230
- Malfunction decision conditions p.230
- Faulty high pressure switch disconnection of high pressure switch harness faulty connectors connection of high pressure switch p.230
- Continuity of high pressure switch is detected by the safety device circuitry p.230
- When the compressor is off and the high pressure switch doesn t have continuity p.230
- When the compressor did not turn in approximately 15 seconds after starting operation frequency 4 times clear condition 60 minute continuous run normal p.231
- Troubleshooting p.231
- Supposed causes p.231
- Outdoor unit indication p.231
- Operation halt due to faulty position detection sensor p.231
- Method of malfunction detection p.231
- Malfunction decision conditions p.231
- Incorrect detection due to disconnected relay of compressor malfunction to start due to faulty compressor malfunction to start due to faulty outdoor unit pc board malfunction to start due to stop valve closed incorrect detection due to faulty outdoor unit pc board input voltage error p.231
- Faulty start of the compressor is detected by checking the turning information of the compressor via position detector of electrical parts p.231
- Check no refer to p 53 p.231
- Check no refer to p 52 p.231
- Incorrect connectors connection faulty fan pc board faulty fan motor p.232
- Fan position detection error p.232
- Fan malfunction is detected by checking 3 numbers motor position detection signal p.232
- Check no refer to p 50 p.232
- When the same state with 3 numbers motor position detection signal was kept for 5 seconds p.232
- When a fan malfunction is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the malfunction generation p.232
- Troubleshooting p.232
- Supposed causes p.232
- Outdoor unit indication p.232
- Method of malfunction detection p.232
- Malfunction decision conditions p.232
- Supposed causes p.233
- Outdoor unit indication p.233
- Operation halt due to detection of ct error p.233
- Method of malfunction detection p.233
- Malfunction decision conditions p.233
- Incorrect connectors connection faulty thermistor faulty power transistor breaking of wire or faulty connection of internal wiring faulty reactor faulty pcb p.233
- Ct errors are detected using the compressor s operating frequency and the input current detected by the ct p.233
- Check no refer to p 51 p.233
- Check no 1 refer to p 56 p.233
- When the compressor s rotating speed is 64rps or more and the ct input is 2 a or less p.233
- When a ct error is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minutes cumulative time after the error generation p.233
- Troubleshooting p.233
- When the outside air temperature sensor became short circuited or open p.234
- Troubleshooting p.234
- Supposed causes p.234
- Outdoor unit indication p.234
- Method of malfunction detection p.234
- Malfunction decision conditions p.234
- Faulty outside air thermistor p.234
- Faulty outside air temperature sensor faulty connectors connection of outside air temperature sensor p.234
- Outdoor unit indication p.235
- Method of malfunction detection p.235
- Malfunction decision conditions p.235
- Faulty discharge thermistor p.235
- Faulty discharge temperature sensor faulty connectors connection of discharge temperature sensor p.235
- When the discharge temperature sensor became short circuited or open p.235
- Troubleshooting p.235
- Supposed causes p.235
- When the suction temperature sensor became short circuited or open p.236
- Troubleshooting p.236
- Supposed causes p.236
- Outdoor unit indication p.236
- Method of malfunction detection p.236
- Malfunction decision conditions p.236
- Faulty suction temperature sensor faulty connectors connection of suction temperature sensor p.236
- Faulty of suction thermistor p.236
- Outdoor unit indication p.237
- Method of malfunction detection p.237
- Malfunction decision conditions p.237
- Faulty heat exchanger thermistor p.237
- Faulty heat exchanger temperature sensor faulty connectors connection of heat exchanger temperature sensor p.237
- When the heat exchanger temperature sensor became short circuited or open p.237
- Troubleshooting p.237
- Supposed causes p.237
- When the liquid pipe temperature sensor became short circuited or open p.238
- Troubleshooting p.238
- Supposed causes p.238
- Outdoor unit indication p.238
- Method of malfunction detection p.238
- Malfunction decision conditions p.238
- Faulty of liquid pipe thermistor p.238
- Faulty liquid pipe temperature sensor faulty connectors connection of liquid pipe temperature sensor p.238
- Outdoor unit indication p.239
- Method of malfunction detection p.239
- Malfunction decision conditions p.239
- Faulty bp liquid pipe thermistor p.239
- Faulty bp liquid pipe temperature sensor faulty connectors connection of bp liquid pipe temperature sensor p.239
- When the bp liquid pipe temperature sensor became short circuited or open p.239
- Troubleshooting p.239
- Supposed causes p.239
- When the bp gas pipe temperature sensor became short circuited or open p.240
- Troubleshooting p.240
- Supposed causes p.240
- Outdoor unit indication p.240
- Method of malfunction detection p.240
- Malfunction decision conditions p.240
- Faulty bp gas pipe thermistor p.240
- Faulty bp gas pipe temperature sensor faulty connectors connection of bp gas pipe temperature sensor p.240
- Method of malfunction detection p.241
- Malfunction decision conditions p.241
- Error is determined by the lp sensor value when the compressor is off 2 error is determined by the lp sensor value in normal operation when the compressor is on 3 error is determined by the lp sensor value when a certain time range passed after standby operation at time of starting p.241
- Defective lp sensor faulty connectors connection of lp sensor possibility of gas shortage when cooling refrigerant amount 0 20 when heating refrigerant amount 0 5 p.241
- Abnormal lp error p.241
- When either of 1 3 conditions mentioned above was satisfied p.241
- Troubleshooting p.241
- Supposed causes p.241
- Outdoor unit indication p.241
- When the detected box temperature came to 85 c or higher p.242
- When an abnormal rise in box temperature is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within cumulative 60 minute after the abnormal temperature rise generation p.242
- Troubleshooting p.242
- Supposed causes p.242
- Rise in box temperature p.242
- Outdoor unit indication p.242
- Method of malfunction detection p.242
- Malfunction decision conditions p.242
- Incorrect installation abnormally high ambient temperature of electrical parts outside causes other than noise etc p.242
- Detection of abnormal rise in box temperature is carried out by the temperature detected by thermistor p.242
- Check no refer to p 49 p.242
- Abnormal rise in fin temperature p.243
- Supposed causes p.244
- Outdoor unit indication p.244
- Operation halt due to detection of output overcurrent p.244
- Method of malfunction detection p.244
- Malfunction decision conditions p.244
- Troubleshooting outdoor unit related sie18 201 p.245
- Troubleshooting p.245
- Service diagnosis p.245
- Check no refer to p 53 p.245
- Check no refer to p 52 p.245
- Check no refer to p 49 p.245
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.245
- Check no refer to p 52 p.246
- Check no refer to p 51 p.246
- Check no refer to p 49 p.246
- Abnormality of integrated input current is detected using integrated input current detected by the ct p.246
- When the integrated input current of 31a continued for 2 seconds p.246
- When an integrated input error is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation p.246
- Troubleshooting p.246
- Supposed causes p.246
- Outdoor unit indication p.246
- Method of malfunction detection p.246
- Malfunction decision conditions p.246
- Integrated input current stop p.246
- Faulty compressor overcurrent due to faulty pc board incorrect detection due to faulty pc board short circuit p.246
- Check no refer to p 53 p.246
- Troubleshooting p.247
- Supposed causes p.247
- Outdoor unit indication p.247
- Method of malfunction detection p.247
- Malfunction decision conditions p.247
- Electronic thermal p.247
- Troubleshooting p.248
- Supposed causes p.248
- Stall prevention p.248
- Outdoor unit indication p.248
- Method of malfunction detection p.248
- Malfunction decision conditions p.248
- Transmission error between microcomputers p.249
- Overvoltage low voltage p.250
- Outdoor unit indication p.250
- Method of malfunction detection p.250
- Malfunction decision conditions p.250
- Instantaneous power failure mismatching with power supply of feedback control system p.250
- Electrolytic capacitor malfunction pam module malfunction faulty power transistor disconnection faulty connection of internal wiring faulty reactor faulty pc board p.250
- Check no refer to p 51 p.250
- Check no 2 refer to p 57 p.250
- Check no 1 refer to p 56 p.250
- When after starting the compressor the voltage reached to below 210v over 450v before it exceeded 320v or to below 260v or over 450v after it exceeded 320v once p.250
- When a power supply system error is generated 4 times the system shuts down the 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation p.250
- Troubleshooting p.250
- Supposed causes p.250
- Power supply system error is detected using the voltage of inverter dc unit p.250
- When the data from bp unit could not be correctly received continuously for 15 seconds p.251
- Troubleshooting p.251
- Transmission error is detected when the data from bp unit could not be correctly received p.251
- Transmission error between outdoor unit and bp unit p.251
- Supposed causes p.251
- Outdoor unit indication p.251
- Method of malfunction detection p.251
- Malfunction decision conditions p.251
- Incorrect connection of transmission wire connection from side a of bp is not carried out bp determined numbers are different from actual bp numbers distortion of power supply wave p.251
- Service diagnosis 241 p.252
- Check no 4 refer to p 57 p.252
- Troubleshooting p.252
- Sie18 201 troubleshooting outdoor unit related p.252
- When bp unit could not correctly receive the data from indoor unit continuously for 15 seconds and transmitted the data incorrectly to outdoor unit p.253
- Troubleshooting p.253
- Transmission error is detected when bp unit could not correctly receive the data from bp unit to transmit the data incorrectly to outdoor unit p.253
- Transmission error between indoor unit and bp unit p.253
- Supposed causes p.253
- Outdoor unit indication p.253
- Method of malfunction detection p.253
- Malfunction decision conditions p.253
- Incorrect connection of transmission wire distortion of power supply waveform p.253
- Check no 4 refer to p 57 p.253
- Outdoor unit indication p.254
- Method of malfunction detection p.254
- Malfunction decision conditions p.254
- Incorrect connectors connection dc fan microcomputer malfunction outside causes noise etc malfunction of control pc board receiving circuit p.254
- When transmission error with dc fan microcomputer continued for 60 seconds p.254
- Troubleshooting p.254
- Transmission error of dc fan p.254
- Supposed causes p.254
- Supposed causes p.255
- Outdoor unit indication p.255
- Operation halt due to detection of gas shortage p.255
- Method of malfunction detection p.255
- Malfunction decision conditions p.255
- Troubleshooting p.256
- Sie18 201 troubleshooting outdoor unit related p.256
- Service diagnosis 245 p.256
- Ct check refer to p 22 p.256
- Check no refer to p 50 p.256
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.256
- Malfunction decision conditions p.257
- Troubleshooting p.257
- System malfunction p.257
- Supposed causes p.257
- Outdoor unit indication p.257
- Method of malfunction detection p.257
- When the detected temperature came to 92 c or higher or to 30 c or lower p.258
- When box thermistor malfunction is detected once the system shuts down the 1 time counter automatically resets itself when cause of malfunction is resolved p.258
- Troubleshooting p.258
- Supposed causes p.258
- Outdoor unit indication p.258
- Method of malfunction detection p.258
- Malfunction of box temperature thermistor is detected using the temperature detected by the thermistor p.258
- Malfunction decision conditions p.258
- Faulty main unit pc board p.258
- Faulty box thermistor malfunction p.258
- Faulty fin thermistor p.259
- When the detected temperature came to 120 c or higher or to 30 c or lower p.259
- When faulty fin thermistor is detected once the system shuts down the 1 time counter automatically resets itself when cause of malfunction is resolved p.259
- Troubleshooting p.259
- Supposed causes p.259
- Outdoor unit indication p.259
- Method of malfunction detection p.259
- Malfunction decision conditions p.259
- Faulty sensor provided inside power transistor p.259
- Faulty fin thermistor is detected using the temperature detected by the fin p.259
- Sie18 201 troubleshooting outdoor unit related p.260
- Service diagnosis 249 p.260
- Installation condition check p.260
- How to check p.260
- Discharge pressure check p.260
- Check no p.260
- Check no p.261
- Troubleshooting outdoor unit related sie18 201 p.261
- Service diagnosis p.261
- Note please note that the latching sound varies depending on the valve type p.261
- Measurement method 1 turn the power supply on 2 check the voltage of u v w phase of the above upper and lower fans with fan rotating 3 the waveform measured will be as shown below p.261
- Locations for measurement upper lower fans u v w phase multiple meter side a side b p.261
- It is ok if as shown above 3 approximately 5v voltage is turned on and off p.261
- If no ev generates latching sound in the above step 2 the outdoor unit pcb is faulty 5 if the conductivity is confirmed in the above step 2 mount a good coil which generated latching sound in the ev unit that did not generate latching sound and check to see if that ev generates latching sound if latching sound is generated the outdoor unit pcb is faulty if latching sound is not generated the ev unit is faulty p.261
- Fan motor position signal check p.261
- Electronic expansion valve check p.261
- Conduct the followings to check the electronic expansion valve ev 1 check to see if the ev connector is correctly inserted in the pcb compare the ev unit and the connector number 2 turn the power off and back on again and check to see if all the evs generate latching sound 3 if any of the evs does not generate latching noise in the above step 2 disconnect that connector and check the conductivity using a tester check the conductivity between pins 1 3 and 6 and between pins 2 4 and 5 if there is no conductivity between the pins the ev coil is faulty p.261
- Sie18 201 troubleshooting outdoor unit related p.262
- Service diagnosis 251 p.262
- Internal wiring check 1 p.262
- Check the wiring at the sections marked by the boxes in the diagram check for breaking of wire and wiring errors in the case of rmx140jvmc p.262
- Check no p.262
- Capacitor voltage check follow the below figure to measure the capacitor voltage with breaker kept on while take enough care not to touch the charging unit p.263
- Power transistor check do not touch the charging unit for 10 minutes after turning the breaker off even when touching the charging unit after 10 minutes use a multiple meter to ensure that the power supply voltage of power transistor is 50v or less measure u v w either on terminals of control pc board on the substrate side or on the compressor terminals measure of the power transistor on section of capacitor as shown in the figure below if the resistance value is not normal replace the control pc board p.263
- Power transistor check capacitor voltage check p.263
- Check no p.263
- Power transistor output check p.264
- Output voltage measurement p.264
- Output current measurement p.264
- Check no p.264
- Thermistor resistance check p.265
- Remove the connectors of the thermistors on the pcb and measure the resistance of each thermistor using tester the relationship between normal temperature and resistance is shown in the graph and the table below p.265
- R25 20k ω b 3950 p.265
- Check no p.265
- Mount a clamp meter to the red harness indicated by the arrow and conduct forced cooling operation in the case of rmx140jvmc p.266
- Inverter units refrigerant system check p.266
- Inverter units input current measurement p.266
- Check no 0 p.266
- Check no p.266
- Sie18 201 troubleshooting outdoor unit related p.266
- Service diagnosis 255 p.266
- Voltage check when starting the compressor p.267
- Troubleshooting outdoor unit related sie18 201 p.267
- Service diagnosis p.267
- Electrolytic capacitor capacity check p.267
- Check no 2 p.267
- Check no 1 p.267
- Total operating current check p.268
- Sie18 201 troubleshooting outdoor unit related p.268
- Service diagnosis 257 p.268
- Power supply waveforms check p.268
- Measure the power supply waveform between pins 1 and 3 on the terminal board and check the waveform disturbance check to see if the power supply waveform is a sine wave fig check to see if there is waveform disturbance near the zero cross sections circled in fig p.268
- Fig fig p.268
- Check no 4 p.268
- Check no 3 p.268
- Troubleshooting outdoor unit related sie18 201 p.269
- The connector has 3 pins and there are three patterns of lead wire colors p.269
- Service diagnosis p.269
- Inverter units indoor unit pcb 2 output voltage check p.269
- Inverter units hall ic check p.269
- Failure of 1 faulty pcb replace the pcb failure of 2 faulty hall ic replace the fan motor both 1 and 2 result replace the pcb p.269
- Check the connector connection breaking of wire check 2 with the power on and off check the following output voltage of about 5 vdc between pins 6 and 7 p.269
- Check the connector connection 2 with the power on operation off and the connector connected check the following output voltage of about 5 v between pins 1 and 3 generation of 3 pulses between pins 2 and 3 when the fan motor is p.269
- Check no 6 p.269
- Check no 5 p.269
- Sie18 201 bp unit trouble diagnosis p.270
- Service diagnosis 259 p.270
- Pcb parts layout p.270
- Led on branch provider unit diagnosis leds p.270
- In case of bpmk928a43only p.270
- Bp unit trouble diagnosis p.270
- Part 10 removal procedure p.272
- Outdoor unit 70 p.272
- Indoor unit 92 p.272
- For bpmk928b42 43 62 p.272
- Procedure p.273
- Installation of indoor unit p.273
- For bpmk928b42 43 p.273
- Procedure p.274
- Opening of electrical box cover and removal of pcb mount p.274
- Removal of motorized valve p.276
- Procedure p.276
- Removal procedure p.279
- Removal of thermistor p.279
- Procedure p.279
- For bpmk928b42 43 sie18 201 p.279
- Disconnect the thermistor harness connector from the pcb p.279
- Warning be sure to turn off all power supplies before disassembling work p.279
- Tighten the tie wrap to secure the above tape p.279
- The factory installed thermistors cannot be replaced thermistor positions and connector pins p.279
- Step procedure points p.279
- Secure a replacement thermistor onto the pipe with aluminium tape provide thermal insulation from above p.279
- Removal of outer panels p.281
- Procedure p.281
- Outdoor unit p.281
- Removal of pcb and electrical box p.282
- Procedure p.282
- Slide the front section to the right and release it off the two hooks at the back p.285
- Remove the two lock screws from the front section p.285
- Disconnect the two relay connectors on the side p.285
- Outdoor unit sie18 201 p.287
- Disconnect all the connectors remove the two screws from the control pcb p.287
- Detaching the control pcb p.287
- The setting and self diagnostic pcb is located also as shown at right p.287
- The pcb1 and pcb4 are integrally constructed p.287
- The control pcb is located as shown at right p.287
- Step procedure points p.287
- Remove the two screws from the electrolytic capacitor p.287
- Removal procedure p.287
- The fan control pcb is located as shown at right remove the four locking card spacers and detach the pcb p.289
- Detaching the fan control pcb p.289
- Removal of propeller fans and fan motors p.290
- Procedure p.290
- Removal of thermistor p.292
- Procedure p.292
- Removal of motorized valve p.293
- Procedure p.293
- Removal of sound insulation p.295
- Procedure p.295
- Undo the two points of the sound insulation fixture string p.296
- Open the sound insulation and draw it out p.296
- Draw out the sound insulation cover from the bottom of the compressor p.296
- Removal of compressor p.297
- Procedure p.297
- Removal of 4 way valve p.299
- Procedure p.299
- Refer following table for indoor unit removal procedure p.303
- Indoor unit p.303
- Wiring 98 p.304
- Part 11 cautions before operation p.304
- Others 04 p.304
- Installation 94 p.304
- Installation procedure p.305
- Installation p.305
- Carrying in p.305
- Outdoor unit p.305
- Installation service space the horizontal coupling and stacking are not allowed p.305
- Sie18 201 installation p.306
- Caution before operation 295 p.306
- Wall mounted p.307
- For branch piping liquid p.307
- Terminal p.307
- For branch piping gas p.307
- Suspension bolt pitch p.307
- Earth terminal m4 p.307
- Servicing space p.307
- Dimple p.307
- Precaution cut the piping on the standard accessories to match the indoor unit s piping diameter p.307
- Cut line for i d p.307
- Cut line for p.307
- Precaution p.307
- Cut line p.307
- O d ø15 cut p.307
- Collective indication label p.307
- Main piping p.307
- Brazing branch piping p.307
- Installation p.307
- Brazing p.307
- Inspection opening p.307
- Indication label for indoor unit indication label for outdoor unit p.307
- Bp unit p.307
- I d ø9 cut p.307
- Be sure to leave a 600mm square opening for service and maintenance p.307
- I d ø6 cut p.307
- I d ø19 cut p.307
- Wiring clasps p.307
- I d ø p.307
- Wiring clamp p.307
- For main piping gas p.307
- Sie18 201 installation p.308
- Installation of the main unit p.308
- Cautions p.308
- Caution before operation 297 p.308
- Wiring p.309
- Outdoor unit p.309
- Electric wiring connection p.309
- Connection electric wire treatment caution p.309
- Sie18 201 wiring p.310
- Make sure numbers 1 2 and 3 all match p.310
- Caution before operation 299 p.310
- Bp unit connection priority p.310
- Be sure to attach this p.310
- Bp unit p.311
- Wiring sie18 201 p.311
- Warning p.311
- Room c p.311
- Room b p.311
- Room a p.311
- Connecting the wiring p.311
- Caution before operation p.311
- Warning p.312
- Sie18 201 wiring p.312
- Room c p.312
- Room b p.312
- Room a p.312
- Operating test p.312
- Cautions p.312
- Caution before operation 301 p.312
- Caution before operation p.313
- Wiring sie18 201 p.313
- Outdoor unit rotary switch setting p.313
- Sie18 201 wiring p.314
- Caution before operation 303 p.314
- Test run from the remote controller for heat pump model only p.315
- Others p.315
- For heat pump p.315
- For cooling operation in case of low ambient temperature p.315
- Explanation for ftx25 35j series p.315
- Pcb in the indoor unit remove the front panel remove the sensor parts cover 2 screws then remove the electric parts box 1 screw slide the metallic cover to remove it 4 claws on the electric parts box cut the jumper ja on pcb p.316
- Note the power failure recovery function is controlled by the on signal from the centralized control pc board the following may occur if the unit is used without cutting jumper jc if the unit was running when a power failure occurred it may not resume operation after recovering from a power failure p.316
- Method of operating air conditioners individually when two units are installed in one room for cooling only and heat pump model p.316
- How to set the different addresses when two indoor units are installed in one room the two wireless remote controllers can be set for different addresses p.316
- For an explanation on usage see the option handbook however do the following when using the krp413a1s contact connection centralized control pc board p.316
- Dry keep change over switch all indoor models for cooling only and heat pump model p.316
- Centralized control for krc72 krp413a1s p.316
- Wireless remote controller cut the jumper j4 p.316
- Adjusting the angle of the intelligent eye sensor p.317
- Test run from the remote controller for heat pump model only p.318
- Method of operating air conditioners individually when two units are installed in one room for cooling only and heat pump model p.318
- Explanation for cdk x 25 60h series p.318
- Note the power failure recovery function is controlled by the on signal from the centralized control pc board the following may occur if the unit is used without cutting jumper jc if the unit was running when a power failure occurred it may not resume operation after recovering from a power failure p.319
- For an explanation on usage see the option handbook however do the following when using the krp410a11s contact connection centralized control pc board p.319
- Dry keep change over switch all indoor models for cooling only and heat pump model p.319
- Centralized control for krc72 krp411a1s and krp410a11s p.319
- Wiring diagrams 17 p.320
- Piping diagrams 10 p.320
- Part 12 appendix p.320
- Piping diagrams sie18 201 p.321
- Piping diagrams p.321
- Outdoor units p.321
- Appendix p.321
- Rmx140jvmb rmx140jzvmb p.321
- Sie18 201 piping diagrams p.322
- Note 1 brazing for the field piping connection 2 use the pipe attached if the pipe size is not matched when connecting indoor unit adjustable for the connecting direction p.322
- Bpmk928b43 p.322
- Bpmk928b42 p.322
- Bp units p.322
- Appendix 311 p.322
- Piping diagrams sie18 201 p.323
- Indoor units p.323
- Indoor unit p.323
- Ftxd50 60 71jv1b p.323
- Ftx25 35jav1nb p.323
- Appendix p.323
- Flx25 35hv1nb p.324
- Cdx25 35 50 60hav1nb cdx25 35 50 60jv1nb p.324
- Appendix 313 p.324
- Sie18 201 piping diagrams p.324
- Piping diagrams sie18 201 p.325
- Flx50 60jv1b p.325
- Field piping φ b cut p.325
- Field piping φ a cut p.325
- Fhyc35 45 fhyc60 71 fhyb35 45 fhyb60 71 p.325
- Fhyb35 45 60 71fk7v1 fhyc35 45 60 71b7v1 p.325
- B 12 15 12 15 p.325
- Appendix p.325
- A 6 9 6 9 p.325
- Sie18 201 piping diagrams p.326
- Indoor unit p.326
- Ftxd25 35kzv1b p.326
- Ftk50 60hvec ftx50 60hvec p.326
- Appendix 315 p.326
- Appendix p.327
- Piping diagrams sie18 201 p.327
- Indoor unit p.327
- Fvx25 35kzv1b p.327
- Wiring diagrams p.328
- Sie18 201 wiring diagrams p.328
- Ry3x ry84 p.328
- Rmx140jvmb rmx140jzvmb p.328
- Outdoor units p.328
- Magnetic p.328
- Appendix 317 p.328
- Wiring diagrams sie18 201 p.329
- Bpmk928b43 p.329
- Bpmk928b42 p.329
- Bp units p.329
- Appendix p.329
- Cooling only p.330
- Indoor units p.330
- Fhyc35 45 60 71b7v1 p.330
- Fhyb35 45 60 71fk7v1 p.331
- Sie18 201 wiring diagrams p.332
- Heat pump p.332
- Ftxd50 60 71jv1b p.332
- Ftx25 35jav1nb ftxd25 35kzv1b p.332
- Appendix 321 p.332
- Wiring diagrams sie18 201 p.333
- Flx25 35hv1nb p.333
- Cdx25 35 50 60hav1nb cdx25 35 50 60jv1nb p.333
- Appendix p.333
- Fvx25 35kzv1b p.334
- Flx50 60jv1b p.334
- Caution p.334
- Appendix 323 p.334
- Sie18 201 wiring diagrams p.334
- Symbols p.336
- Numerics p.336
- Numerics p.340
- Drawings flow charts p.340
- Zandvoordestraat 300 p.344
- Sie18 201 05 2003 prepared in belgium by vanmelle p.344
- Internet http www daikineurope com p.344
- B 8400 ostend belgium p.344
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Learn how to diagnose and troubleshoot issues with split type indoor units, focusing on thermistor errors and related malfunctions. Ensure efficient operation with our detailed guide.