![Daikin RMX140JZVMB [5/344] Part 9 service diagnosis 75](/img/pdf.png)
Daikin RMX140JZVMB [5/344] Part 9 service diagnosis 75
![Daikin RMX140JZVMB [5/344] Part 9 service diagnosis 75](/views2/1782301/page5/bg5.png)
SiE18-201
iv Table of Contents
1.12 Equalizing Control (Heating)................................................................ 137
1.13 Oil Return Operation (Heating)............................................................ 138
1.14 Defrost Operation ............................................................................... 139
1.15 All-Room Operation (Heating) ............................................................. 140
1.16 Multi-Room Operation (with non-Operating Room Unit) (Heating)...... 141
1.17 Multi-Room Operation (Heating).......................................................... 142
1.18 1-Room Operation — Indoor Unit with Large Capacity (Heating) ....... 143
1.19 1-Room Operation — Indoor Unit with Small Capacity
(2.5 kW) (Heating) ............................................................................... 144
Part 7 Operations.....................................................................145
1. Remote Controller...............................................................................146
1.1 Wireless Remote Controller................................................................. 146
1.2 Wired Remote Controller..................................................................... 156
Part 8 Operating Test ..............................................................157
1. Operating Test ....................................................................................158
1.1 Operating Test..................................................................................... 158
1.2 Test Operation Switch ......................................................................... 161
1.3 Pump Down Operation Switch............................................................. 162
1.4 Record of the Installation Position....................................................... 163
2. Method of Field Set.............................................................................164
2.1 Field Setting......................................................................................... 164
2.2 Interface Adaptor for Room Airconditioner <KRP928A1S>................. 172
2.3 Precautions: For RMK140J / RMX140J Outdoor Unit Users............... 174
Part 9 Service Diagnosis .........................................................175
1. Troubleshooting - Split Type Indoor Unit.............................................176
1.1 Troubleshooting with the Operation Lamp........................................... 176
1.2 Service Check Function....................................................................... 178
1.3 Code Indication on the Remote Controller .......................................... 179
1.4 Troubleshooting................................................................................... 180
1.5 Troubleshooting Detail......................................................................... 181
2. Troubleshooting - SkyAir Indoor Unit ..................................................195
2.1 The INSPECTION/TEST Button.......................................................... 195
2.2 Self-Diagnosis by Wired Remote Controller........................................ 196
2.3 Fault Diagnosis by Wireless Remote Controller.................................. 197
2.4 Troubleshooting by LED on the Indoor Unit’s...................................... 199
2.5 Troubleshooting by Remote Controller Display / LED Display ............ 200
2.6 Troubleshooting Detail......................................................................... 201
3. Troubleshooting - Outdoor Unit Related .............................................209
3.1 The Unit Runs but Doesn’t Cool (Heat) the Room .............................. 209
3.2 7 Seg. Display on the Outdoor P. C. Board......................................... 211
3.3 Troubleshooting Detail......................................................................... 212
3.4 How to Check ...................................................................................... 249
4. BP Unit Trouble Diagnosis..................................................................259
4.1 PCB Parts Layout................................................................................ 259
4.2 LED On Branch Provider Unit (Diagnosis LEDs)................................. 259
Содержание
- J series 1
- Manual 1
- Service 1
- Bp unit 2
- Heat pump indoor unit 2
- Outdoor unit 2
- Super multi plus j series 2
- And name 3 3
- Introduction vii 3
- List of function 3
- Main functions 8 3
- Part 1 list of function 3
- Part 2 specifications 3
- Part 3 printed circuit board connector wiring diagram 3
- Part 4 main functions indoor unit 7 3
- Part 5 main functions outdoor unit bp unit 5 3
- Printed circuit board connector wiring diagram and name 4 3
- Protection device 1 3
- Refrigerant system and function of functional parts of outdoor unit 7 3
- Specifications 3
- System control 3 3
- Flow of refrigerant 26 4
- Part 6 flow of refrigerant 25 4
- Bp unit trouble diagnosis 59 5
- Method of field set 64 5
- Operating test 58 5
- Part 7 operations 45 5
- Part 8 operating test 57 5
- Part 9 service diagnosis 75 5
- Remote controller 46 5
- Troubleshooting outdoor unit related 09 5
- Troubleshooting skyair indoor unit 95 5
- Troubleshooting split type indoor unit 76 5
- Drawings flow charts v 6
- For bpmk928b42 43 62 6
- Index i 6
- Indoor unit 92 6
- Installation 94 6
- Others 04 6
- Outdoor unit 70 6
- Part 10 removal procedure 61 6
- Part 11 cautions before operation 93 6
- Part 12 appendix 09 6
- Piping diagrams 10 6
- Wiring 98 6
- Wiring diagrams 17 6
- Cautions in repair 8
- Introduction 8
- Safety cautions 8
- Warning 8
- Caution 9
- Cautions regarding products after repair 9
- Warning 9
- Caution 10
- Inspection after repair 10
- Warning 10
- Caution 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 11
- Using icons 11
- Using icons list 11
- List of function 12
- Part 1 list of function 12
- For flx50 60j 13
- Function list for europe r 22 13
- List of function 13
- List of function sie18 201 13
- Function list for singapore malaysia indonesia 14
- List of function 3 14
- Sie18 201 list of function 14
- For flk flx50 60j 15
- For flk flx50 60j 2 15
- Function list for australia 15
- List of function 15
- List of function sie18 201 15
- For flx50 60j 16
- For flx50 60j 2 16
- Function list for europe r 407c 16
- List of function 5 16
- Sie18 201 list of function 16
- Part 2 specifications 18
- Specifications 18
- Bp unit 19
- Branch piping 19
- Cooling only 19
- Indoor unit 19
- Main piping 19
- Outdoor unit 19
- Outdoor units 19
- Specifications 19
- Bp unit 20
- Branch piping 20
- Hz 220v 20
- Indoor unit 20
- Main piping 20
- Outdoor unit 20
- Sie18 201 specifications 20
- Specifications 9 20
- Bp unit 21
- Branch piping 21
- Hz 220 230 240v 60hz 220 230v 21
- Indoor unit 21
- Main piping 21
- Outdoor unit 21
- Specifications 21
- Specifications sie18 201 21
- Bp unit 22
- Branch piping 22
- Hz 220 230 240v 60hz 220 230v 22
- Indoor unit 22
- Main piping 22
- Outdoor unit 22
- Sie18 201 specifications 22
- Specifications 11 22
- Bp unit 23
- Branch piping 23
- Heat pump 23
- Hz 220 240v 60hz 220 230v 23
- Indoor unit 23
- Main piping 23
- Outdoor unit 23
- Specifications 23
- Specifications sie18 201 23
- Bp unit 24
- Branch piping 24
- Hz 220 230v 24
- Indoor unit 24
- Main piping 24
- Outdoor unit 24
- Sie18 201 specifications 24
- Specifications 13 24
- Bp unit 25
- Branch piping 25
- Hz 220 240v 60hz 220 230v 25
- Indoor unit 25
- Main piping 25
- Outdoor unit 25
- Specifications 25
- Specifications sie18 201 25
- Bp unit 26
- Branch piping 26
- Hz 220 230 240v 60hz 220 230v 26
- Indoor unit 26
- Main piping 26
- Outdoor unit 26
- Sie18 201 specifications 26
- Specifications 15 26
- Bp units 27
- Hz 220 240v 60hz 220 230v 27
- Specifications 27
- Specifications sie18 201 27
- 2 kw class 3 kw class 28
- Heat pump 28
- Indoor units for europe 28
- Wall mounted type 28
- 5 kw class 6 kw class 29
- 7 kw class 29
- Hz 230v 29
- Specifications 29
- Specifications sie18 201 29
- 2 kw class 3 kw class 30
- 5 kw class 6 kw class 30
- Duct connected type 30
- Hz 230v 30
- Sie18 201 specifications 30
- Specifications 19 30
- 2 kw class 3 kw class 31
- 5 kw class 6 kw class 31
- Hz 230v 31
- Specifications 31
- Specifications sie18 201 31
- 2 kw class 3 kw class 32
- 5 kw class 6 kw class 32
- Floor ceiling suspended dual type 32
- Hz 230v 32
- Sie18 201 specifications 32
- Specifications 21 32
- 2 kw class 3 kw class 33
- Floor standing type 33
- Hz 230v 33
- Specifications 33
- Specifications sie18 201 33
- Part 3 printed circuit board connector wiring diagram and name 34
- Printed circuit board connector wiring diagram and name 4 34
- Branch provider unit bpmk928b42 b43 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 35
- Name of connector 35
- Other designations 35
- Printed circuit board 35
- Printed circuit board connector wiring diagram and name 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 35
- Heat pump 36
- Name of connector 36
- Outdoor unit rmx140jvmb rmx140jzvm 36
- Printed circuit board 36
- Other designations 37
- Printed circuit board 1 control pcb 37
- Printed circuit board 2 filter pcb 38
- Printed circuit board 3 fan control 38
- Printed circuit board 4 indicator pcb 38
- Printed circuit board connector wiring diagram and name 27 38
- Sie18 201 printed circuit board connector wiring diagram and name 38
- Ftx25 35j series ftxd25 35k series fvx25 35k series 39
- Heat pump 39
- Name of connector 39
- Printed circuit board 39
- Printed circuit board 1 3 40
- Printed circuit board 1 3 detail 40
- Printed circuit board connector wiring diagram and name 29 40
- Sie18 201 printed circuit board connector wiring diagram and name 40
- Ftxd50 71jv series 41
- Heat pump 41
- Name of connector 41
- Other designations 41
- Printed circuit board 41
- Printed circuit board 1 control pcb 41
- Printed circuit board 2 power supply pcb 42
- Printed circuit board 3 display pcb 42
- Printed circuit board 4 signal receiver pcb 42
- Printed circuit board connector wiring diagram and name 31 42
- Sie18 201 printed circuit board connector wiring diagram and name 42
- Cdx25 60hav series cdx25 60jv series 43
- Heat pump 43
- Name of connector 43
- Printed circuit board 43
- Printed circuit board 1 3 44
- Printed circuit board 1 3 detail 44
- Printed circuit board connector wiring diagram and name 33 44
- Sie18 201 printed circuit board connector wiring diagram and name 44
- Flx25 60hv series flx50 60jv series 45
- Heat pump 45
- Name of connector 45
- Other designation 45
- Printed circuit board 45
- Printed circuit board 1 control pcb 46
- Printed circuit board 2 power supply pcb 46
- Printed circuit board connector wiring diagram and name 35 46
- Sie18 201 printed circuit board connector wiring diagram and name 46
- Main functions 8 48
- Part 4 main functions indoor unit 48
- For ftx25 35j series only outline of the action 49
- Main functions 49
- Main functions in split type 49
- Others 49
- Wide angle flaps louvers and auto swing 49
- Air purifying filter 50
- Automatic air flow control for cooling 50
- Automatic air flow control for heating 50
- Fan speed control for indoor units 50
- For ftx25 35 j series 50
- For ftx25 35j series control mode 50
- For more information about hall ic refer to hall ic check a6 on page 258 50
- Note 1 during powerful operation fan operate h tap 50 70 rpm 2 fan stops during defrost operation 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 50
- Phase control and fan speed control contains 8 steps lll ll l ml m hm h and hh 50
- Phase steps 50
- Signal receiving sign 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 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 50
- The following drawing explains the principle for fan speed control for heating 50
- The following drawing explains the principle of fan speed control for cooling 50
- When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 50
- Within this range the airflow rate is automatically controlled when the airflow adjusting button is set to automatic 50
- For ftk x 25 35 j series 51
- Hot start function heat pump only 51
- In the case of inverter units 51
- Mold proof air filter 51
- Pre heat operation heat pump only 51
- Program dry function 51
- Washable grille 51
- Automatic operation heat pump only 52
- Detailed explanation of the function 52
- Auto restart function 53
- Cooling operation 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 53
- Heating operation 53
- Main functions 53
- Main functions sie18 201 53
- Night set mode 53
- Note self diagnosis led display is not equipped for ftx25 35 j series 53
- Self diagnosis digital display 53
- Self diagnosis led display 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 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 53
- The night set circuit 53
- 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 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 53
- Detection method by human motion sensor 54
- For ftx25 35 j series only outline 54
- Intelligent eye 54
- Main functions 43 54
- Processing 54
- Sie18 201 main functions 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 54
- The motions for example in cooling 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 54
- 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 54
- For ftx25 35 j series only outline 55
- Good sleep cooling control 55
- Others 55
- Processing 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 56
- Dry operation activating compressor on temperature 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 56
- Program dry operation 56
- Room temperature difference between activation and suspension of dry operation 56
- Cooling monitoring function 57
- Auto restart function 58
- Auto swing of flap s 58
- Freeze protection function 58
- Minutes standby function 58
- Air flow automatic auto fan speed 59
- Night set mode function 59
- Emergency operation function on off switch 60
- Notes on powerful operation 60
- Powerful operation 60
- Control panel 61
- Filter check indicator 61
- Draft avoidance control 1 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 62
- Existing cooling heating preset temperature range has been changed 62
- Main functions 51 62
- Sie18 201 main functions 62
- Skyair 62
- Thermostat control 62
- Air flow volume shift control 63
- Auto restart function 63
- Draft avoidance control 2 63
- Freeze prevention control 63
- Cautions 64
- Cautions when skyair auto fan are used 64
- Heat pump model 64
- The corresponding models 64
- Part 5 main functions outdoor unit bp unit 66
- Protection device 1 66
- Refrigerant system and function of functional parts of outdoor unit 7 66
- System control 3 66
- Bp unit 68
- Main functions 57 68
- Refrigerant system and function of functional parts of outdoor unit 68
- Sie18 201 refrigerant system and function of functional parts of outdoor unit 68
- Major functional parts 69
- Protective devices thermistors sensors 71
- Outdoor unit 72
- Protection device 72
- Bp unit 73
- Before equalizing 74
- Compressor off 74
- Compressor on 74
- Cooling 74
- Cooling heating 74
- Feedback control 74
- Heating 74
- Main functions 63 74
- Minutes standby 74
- Operation start 74
- Outline of system control 74
- Power supply on 74
- Sie18 201 system control 74
- Start up standby operation 74
- System control 74
- System protection control 74
- Unit stop standby control 74
- Air conditioner control mode 75
- Determination of normal operation mode 75
- Mode configuration 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 75
- The operation mode is determined based on the first button pressed 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 75
- Explanation of the function 76
- Purpose of the function 76
- Standby control at power on 76
- Cooling heating standby operation at startup 77
- Main functions 77
- Purpose of the function 77
- Standby operation 77
- System control sie18 201 77
- 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 77
- Equalizing control 78
- Equalizing control in cooling 78
- Main functions 67 78
- Purpose of the function 78
- Sie18 201 system control 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 78
- Equalizing control in heating 79
- Main functions 79
- System control sie18 201 79
- 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 80
- Determination of initial frequency 80
- Determination of operation frequency 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 80
- Outline 80
- Purpose of the function 80
- To control the operating frequency in order to ensure compressor reliability and optimise the operating condition 80
- 3 based on the α value determined by d signal from indoor unit the following calculation is performed α value α value α pwr 81
- Bp unit command conversion 81
- D room temperature temperature setting signals from bp units are converted to α values 81
- D signals from bp units are used as the α value in frequency commands excludes when powerful function is in operation 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 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 81
- When the above conditions are met the powerful operation mode is activated and the following processes are conducted 81
- Description 82
- Determination of initial frequency 82
- Outline 82
- 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 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 83
- 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 84
- 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 84
- Details 85
- Oil return operation 85
- Outline 85
- Purpose of the function 85
- Main functions 75 86
- Oil recovery operation in heating mode 86
- Sie18 201 system control 86
- Defrost operation 87
- Details 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 87
- Main functions 87
- Outline 87
- System control sie18 201 87
- Details 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 88
- Main functions 77 88
- Outline 88
- Pre equalization standby operation 88
- Sie18 201 system control 88
- Details 89
- Equalizing control 89
- Equalizing control in cooling 89
- Main functions 89
- Outline 89
- System control sie18 201 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 89
- Equalizing control in heating 90
- Main functions 79 90
- Sie18 201 system control 90
- Capacity control 91
- Details 91
- Outdoor unit motorized valve low pressure cooling capacity control 91
- Outline 91
- Details 92
- Outdoor unit motorized valve high pressure heating capacity control 92
- Outline 92
- Details 93
- Outline 93
- Peak cut control 93
- Details 94
- Freeze up prevention 94
- Outline 94
- Details 95
- Gas shortage malfunction 95
- Outline 95
- Details 96
- Discharge pipe control 96
- Main functions 85 96
- Outline 96
- Sie18 201 system control 96
- With each operation of the discharge pipe temperature malfunction operation counter the above zone judgment temperature is decreased by 2 c 96
- 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 96
- Input current control 97
- Input current control i 97
- Outline 97
- 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 98
- Details 98
- Main functions 87 98
- Outside air temperature i3ch 98
- Sie18 201 system control 98
- Similarly the input current value in controlled in inverter microcomputers to protect the inverter parts 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 98
- 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 98
- Details 99
- Input current control ii high pressure control 99
- Outline 99
- Details 100
- Outline 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 28 100
- Wet protection control i 100
- When the outside air temperature is low the lower limit of operating frequency is restricted to ensure the compressor suction air humidity 100
- Details 101
- Electric parts cooling and electric parts fin temperature control 101
- Outline 101
- Details 102
- Differential pressure control 102
- Outline 102
- Details 103
- Outline 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 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 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 103
- Year round cooling only function 103
- Details 104
- Nighttime low noise control 104
- Outline 104
- Purpose of the function 104
- I control 105
- Outline 105
- P control 105
- Pi control 105
- Details 106
- Outline 106
- Warm up function 106
- Compressor protection control 107
- Details 107
- More than 2 hours after power reset 107
- Outline 107
- Purpose of the function 107
- The following upper limit frequency control is provided at the compressor off on edge this function is inactive during defrost control 107
- This function ensures appropriate compressor oil level and dilution at startup 107
- Details 108
- Fan control 108
- Fan control under normal condition 108
- Outline 108
- Purpose of the function 108
- Details 109
- Fan off delay control 109
- Outline 109
- Motorized valve control of outdoor unit 110
- Outline 110
- Outline of motorized valve control 110
- Evg gas pipe motorized valve opening restriction 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 111
- In capacity control during normal heating operation evl not fully closed during normal cooling operation 111
- Main functions 111
- Not in capacity control during normal heating operation elv fully closed during normal cooling operation after tevgard elapsed 30 sec or more 111
- Outdoor unit motorized valve opening restriction 111
- Outline 111
- System control sie18 201 111
- 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 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 111
- Evl liquid pipe motorized valve opening restriction evl liquid pipe motorized valve 112
- Details 113
- Outdoor unit motorized valve control in startup and during the number of operating room units change 113
- Outline 113
- Details 114
- Outdoor unit motorized valve control during high discharge pipe temperature 114
- Outline 114
- Outdoor units motorized valve control by target discharge pipe temperature 115
- Outline 115
- Cooling outdoor unit sc control 116
- Outline 116
- Bp unit motorized valve control 117
- Bp unit motorized valve control at startup and during the number of operating room units change 117
- Bp unit motorized valve control during frequency change 117
- Motorized valve flow rate restriction 117
- Outline 117
- Purpose of the function 117
- Control based on absolute flow rate instruction 118
- Details 118
- Full closing of motorized valves 118
- Outline 118
- Purpose of the function 118
- Control based on relative flow rate instruction 119
- Outline 119
- Purpose of the function 119
- Details 120
- Gas pipe isothermal control in cooling operation 120
- Outline 120
- Purpose of the function 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 121
- Details 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 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 1 122
- Outline 122
- Purpose of the function 122
- Sh control in cooling operation 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 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 122
- This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode 122
- 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 122
- 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 124
- Main functions 113 124
- Outline 124
- Purpose of the function 124
- Sc control in heating operation 124
- Sie18 201 system control 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 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 124
- This function ensures appropriate refrigerant distribution when room units are operating in the heating mode 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 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 124
- Current sc evr closed target sc current sc evr opened 125
- Details 125
- Main functions 125
- System control sie18 201 125
- 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 125
- Details 126
- Heat exchanger isothermal control in heating operation 126
- Outline 126
- Purpose of the function 126
- Bp unit motorized valve control in high discharge pipe temperature 127
- 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 127
- Details 128
- Inter bp units heating heat exchanger isothermal control 128
- Outline 128
- Purpose of the function 128
- Details 129
- Inter bp units gas pipe isothermal control 129
- Outline 129
- Purpose of the function 129
- Bp unit motorized valve control by target discharge pipe temperature 130
- Outline 130
- Purpose of the function 130
- Details 131
- Outline 131
- Purpose of the function 131
- Way valve operation 131
- Way valve operation security 131
- Way valve switching 131
- Details 132
- Jis mode 132
- Outline 132
- Purpose of the function 132
- Details 133
- Main functions 133
- Outline 133
- Pump down operation 133
- System control sie18 201 133
- When the pump down button is pressed the following control is provided to collect refrigerant in the receiver 133
- Even if the stop zone is reached the zone remains as the drooping zone for 540 sec 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 134
- Main functions 123 134
- 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 134
- Protection control of skyair indoor units 134
- Sie18 201 system control 134
- Skyair indoor unit peak cut zone 134
- The zones for skyair indoor unit peak cut control is produced in the bp unit 134
- Abnormality processing 135
- Monitoring function during skyair indoor unit heating thermostat off 135
- Flow of refrigerant 26 136
- Part 6 flow of refrigerant 136
- Flow of refrigerant 137
- Flow of refrigerant sie18 201 137
- Evl 120 pls evp full open evg full close evu full close evt full close evh full close 138
- Flow of refrigerant 127 138
- Full close 138
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 138
- Productive operation patterns on stopping the cooling operation on starting the cooling operation when cooling standby operation has not completed yet 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 138
- Sie18 201 flow of refrigerant 138
- Standby operation cooling 138
- Equalizing control cooling 139
- Evl 100 pls evp full open evg full close evu full close evt full close evh full close 139
- Flow of refrigerant 139
- Flow of refrigerant sie18 201 139
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 139
- Productive operation patterns when the cooling standby operation has been completed 139
- 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 139
- 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 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 140
- Flow of refrigerant 129 140
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 140
- Oil return operation cooling 140
- Productive operation patterns oil collecting operation in cooling 140
- Sie18 201 flow of refrigerant 140
- 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 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 141
- Flow of refrigerant 141
- Flow of refrigerant sie18 201 141
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 141
- Low outside air temperature cooling 141
- Productive operation patterns cooling 1 room operation 2 kw 1 room operation with low outside air temperature 141
- All room operation cooling 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 142
- Conditions evl is fully opened via outdoor unit sc control 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 142
- Flow of refrigerant 131 142
- Full close 142
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 142
- Productive operation patterns all room operation 142
- Sie18 201 flow of refrigerant 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 143
- Conditions evl is fully opened via outdoor unit sc control 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 143
- Flow of refrigerant 143
- Flow of refrigerant sie18 201 143
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 143
- Multi room operation no surplus refrigerant cooling 143
- Productive operation patterns status of no surplus refrigerant in multi room operation 143
- 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 144
- Conditions evl is not fully closed via outdoor unit sc control 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 144
- Flow of refrigerant 133 144
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 144
- Multi room operation cooling with surplus refrigerant 144
- Productive operation patterns partial load operation 144
- Sie18 201 flow of refrigerant 144
- 1 room operation indoor unit with large capacity cooling 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 145
- Conditions evl is not fully closed via outdoor unit sc control 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 145
- Flow of refrigerant 145
- Flow of refrigerant sie18 201 145
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 145
- Productive operation patterns 1 room operation with large capacity indoor unit 145
- Room operation indoor unit with large capacity cooling 145
- Conditions when the operating frequency droops at the minimum frequency with freeze up protection control 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 146
- Flow of refrigerant 135 146
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or ga 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 146
- Productive operation patterns 1 room operation 2 kw 1 room operation 146
- Room operation indoor unit with small capacity 2 kw cooling 146
- Sie18 201 flow of refrigerant 146
- Evg full open evl full close evp full open evu full close evt full close evh full close 147
- Flow of refrigerant 147
- Flow of refrigerant sie18 201 147
- Full close 147
- Full open 147
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 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 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 147
- Standby operation heating 147
- 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 147
- Equalizing control heating 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 148
- Flow of refrigerant 137 148
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 148
- Productive operation patterns when the heating standby operation has been completed 148
- Sie18 201 flow of refrigerant 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 148
- 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 149
- Flow of refrigerant 149
- Flow of refrigerant sie18 201 149
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 149
- Oil return operation heating 149
- Productive operation patterns oil collecting operation in heating 149
- The oil collecting operation is conducted in the reverse cycle cooling cycle 149
- Defrost operation 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 150
- Flow of refrigerant 139 150
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 150
- Productive operation patterns in defrost operation 150
- Sie18 201 flow of refrigerant 150
- The defrost operation of outdoor unit heat exchanger is conducted in the reverse cycle cooling cycle 150
- All room operation heating 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 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 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 151
- Flow of refrigerant 151
- Flow of refrigerant sie18 201 151
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 151
- Productive operation patterns all room operation 151
- 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 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 152
- Flow of refrigerant 141 152
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 152
- Multi room operation with non operating room unit heating 152
- Productive operation patterns multi room operation with non operating room unit 152
- Sie18 201 flow of refrigerant 152
- The defrost operation of outdoor unit heat exchanger is conducted in the reverse cycle cooling cycle 152
- 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 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 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 153
- Flow of refrigerant 153
- Flow of refrigerant sie18 201 153
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 153
- Multi room operation heating 153
- Productive operation patterns partial load operation 153
- 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 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 154
- Flow of refrigerant 143 154
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 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 154
- Productive operation patterns heating 1 room operation with large indoor unit capacity 154
- Room operation indoor unit with large capacity heating 154
- Sie18 201 flow of refrigerant 154
- 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 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 155
- Flow of refrigerant 155
- Flow of refrigerant sie18 201 155
- High pressure liquid refrigerant high pressure high temp gas refrigerant low pressure low temp liquid or gas refrigerant 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 155
- Productive operation patterns heating 1 room operation 2 kw 1 room operation 155
- Room operation indoor unit with small capacity 2 kw heating 155
- Part 7 operations 156
- Remote controller 46 156
- Ftx25 35j 157
- Open the cover 157
- Operations 157
- Remote controller 157
- Remote controller sie18 201 157
- Sensor 157
- Wireless remote controller 157
- Fvx25 35kz 158
- Ftxd25 35kz 159
- Ftxd50 60 71j 160
- Flx50 60j 161
- On off 161
- Operations 161
- Remote controller sie18 201 161
- Arc423a13 arc423a14 for cdk25 35 50 60havec cdx25 35 50 60havec 162
- Cdx25 35 50 60j 162
- Operations 151 162
- Sie18 201 remote controller 162
- Cdx25 35 50 60ha 163
- On off 163
- Operations 163
- Remote controller sie18 201 163
- Arc423a9 arc423a10 for flk25 35 50 60hvec flx25 35 50 60hvec 164
- Flx25 35h 164
- Open the cover 164
- Operations 153 164
- Sie18 201 remote controller 164
- Brc7c513wc 165
- Fhyc35 45 60 71b7v1 optional accessory 165
- Air filter cleaning time indicator lamp red 166
- Air flow direction adjust button 166
- Defrost lamp orange 166
- Display 166
- Display air flow flap 166
- Display fan speed 166
- Display operation mode 166
- Display programmed time 166
- Display set tempera ture 166
- Display signal transmission 166
- Emergency operation switch 166
- Fan speed control button 166
- Filter sign reset button 166
- Inspection test operation 166
- Inspection test operation button 166
- Names and functions of the operating section fig 1 2 166
- On off button 166
- Operating indicator lamp red 166
- Operation mode selector button 166
- Operations 155 166
- Programming time button 166
- Receiver 166
- Sie18 201 remote controller 166
- Temperature setting button 166
- Timer indicator lamp green 166
- Timer mode start stop button 166
- Timer reserve cancel button 166
- Fhyc35 45 60 71b optional accessory 167
- Wired remote controller 167
- Method of field set 64 168
- Operating test 58 168
- Part 8 operating test 168
- Operating test 169
- Address select sw 170
- Digital service monitor 170
- Forced operation mode select sw 170
- Initialize sw 170
- Normal led 170
- Operating test 159 170
- Outdoor unit statu 170
- Pump down sw 170
- Service monitor rayout on pcb 170
- Sie18 201 operating test 170
- Silent select sw 170
- Test operation sw 170
- Initialize setting 171
- Operating test 171
- Operating test sie18 201 171
- Blinking 172
- Digital display 172
- Test operation switch 172
- Test operation switch sw7 172
- After pd_ blinks in the digital display the lp low pressure indicator activates 173
- Digital display 173
- Pump down operation switch 173
- Pump down operation switch sw4 173
- Be sure to enter the system unit installation position 174
- Indoor unit 174
- Record of the installation position 174
- System layout 174
- Field setting 175
- Method of field set 175
- Procedure 175
- Wired remote controller 175
- Initial setting contents 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 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 176
- Operating test 165 176
- Procedure 176
- Sie18 201 method of field set 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 176
- Wireless remote controller 176
- Example 177
- Local setting mode no 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 177
- 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 02 177
- Air flow direction setting 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 178
- Ceiling type setting switch for air flow adjustment 178
- Detailed explanation of setting modes 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 178
- Filter sign setting 178
- If switching the filter sign on time set as given in the table below set time 178
- In the case of fhyc 35 to 71 class 178
- Make the following setting according to the ceiling height the setting position no is set to 01 at the factory 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 01 178
- Setting table 178
- 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 178
- After completing setting seal off the opening of the address switch and the main sub switch with the attached sealing pad 179
- Explanation 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 179
- Setting the receiver 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 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 179
- Wireless setting address and main sub setting 179
- 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 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 180
- Multiple settings a b 180
- Setting the address of wireless remote controller it is factory set to 1 180
- 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 180
- After setting 181
- Fan speed off when thermostat is off 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 181
- Setting table 181
- Stick the unit no label at decoration panel air discharge outlet as well as on the back of the wireless remote controller 181
- Ultra long life filter sign setting 181
- When a ultra long life filter is installed the filter sign timer setting must be changed 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 181
- Fan speed changeover when thermostat is off 182
- Main sub setting when using 2 remote controllers 182
- Procedure 182
- Setting table 182
- Ac power supply 183
- Be sure to follow all theprecautions below they are all important for ensuring safety 183
- Central remote controller 183
- Components 183
- Interface adaptor for room airconditioner krp928a1s 183
- Method of field set sie18 201 183
- Name and function of parts 183
- Operating test 183
- Overview and features 183
- Safety precautions 3 compatible models 183
- System structure and wiring 183
- Function 184
- Operating test 173 184
- Please refer to operating installations of each controllers 184
- Settings 184
- Sie18 201 method of field set 184
- 1 all indoor units 185
- 1 thermostat off after the room temperature reaches the set temperature indoor units enter the operation stand by state 185
- 2 floor ceiling suspended dual type units 185
- 3 skyair indoor units 185
- Applicable model series 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 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 185
- 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 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 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 185
- Outside air temperature for operation 185
- Precautions for rmk140j rmx140j outdoor unit users 185
- These cases are not troubles 185
- With the thermostat off 1 the fan may start stop automatically this is not a failure 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 185
- Bp unit trouble diagnosis 59 186
- Part 9 service diagnosis 186
- Troubleshooting outdoor unit related 09 186
- Troubleshooting skyair indoor unit 95 186
- Troubleshooting split type indoor unit 76 186
- Location of operation lamp 187
- Troubleshooting split type indoor unit 187
- Troubleshooting with the operation lamp 187
- Troubleshooting with the led indication 188
- Arc423 series ftx25 35j series 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 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 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 189
- Service check function 189
- Code indication on the remote controller 190
- Error codes and description of fault 190
- 5 5 5 a5 191
- 5 5 5 a6 191
- 5 5 5 c 191
- 5 5 5 c9 191
- Cdx25 60h series 191
- Ftx25 35 j series 191
- Indoor units 191
- Troubleshooting 191
- Faulty pcb 192
- Troubleshooting detail 192
- Indoor unit led display 193
- Malfunction decision conditions 193
- Method of malfunction detection 193
- Operation halt due to the freeze protection function 193
- Remote controller display 193
- Supposed causes 193
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 194
- Check no refer to p 54 194
- Service diagnosis 183 194
- Sie18 201 troubleshooting split type indoor unit 194
- Troubleshooting 194
- Indoor unit led display 195
- Malfunction decision conditions 195
- Method of malfunction detection 195
- Operation halt due to fan motor ac motor or related abnormality 195
- Remote controller display 195
- Supposed causes 195
- Troubleshooting 195
- C4 c5 c9 ca 196
- Indoor unit led display 196
- Malfunction decision conditions 196
- Method of malfunction detection 196
- Operation halt due to detection of thermistor or related abnormality 196
- Remote controller display 196
- Supposed causes 196
- Troubleshooting 196
- Faulty indoor unit pcb 197
- Indoor unit led display 197
- Malfunction decision conditions 197
- Method of malfunction detection 197
- Remote controller display 197
- Supposed causes 197
- Troubleshooting 197
- Faulty indoor unit pcb 198
- 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 2 199
- Faulty power supply or indoor unit pcb for ftk x 25 35j 199
- Indoor unit led display 199
- Malfunction decision conditions 199
- Method of malfunction detection 199
- Remote controller display 199
- Supposed causes 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 199
- Troubleshooting 199
- 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 199
- Faulty power supply or indoor unit pcb for ftk x 50 60h cdk x 25 60h 200
- Indoor unit led display 200
- Malfunction decision conditions 200
- Method of malfunction detection 200
- Remote controller display 200
- Supposed causes 200
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 201
- Service diagnosis 201
- Troubleshooting 201
- Troubleshooting split type indoor unit sie18 201 201
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 202
- Check no 6 refer to p 58 202
- Service diagnosis 191 202
- Sie18 201 troubleshooting split type indoor unit 202
- Troubleshooting 202
- Indoor unit led display 203
- Malfunction decision conditions 203
- Method of malfunction detection 203
- Remote controller display 203
- Signal transmission error between indoor and outdoor units 203
- Supposed causes 203
- Troubleshooting 203
- Indoor unit led display 204
- Malfunction decision conditions 204
- Method of malfunction detection 204
- Remote controller display 204
- Signal transmission error between indoor unit and remote controller 204
- Supposed causes 204
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 205
- Service diagnosis 205
- Troubleshooting 205
- Troubleshooting split type indoor unit sie18 201 205
- Explanation 206
- The inspection test button 206
- Troubleshooting skyair indoor unit 206
- Explanation 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 207
- Self diagnosis by wired remote controller 207
- Service diagnosis 207
- Troubleshooting skyair indoor unit sie18 201 207
- Fault diagnosis by wireless remote controller 208
- Procedure 208
- Up button down button 208
- Service diagnosis 209
- Troubleshooting skyair indoor unit sie18 201 209
- Foreword 210
- General precautions when performing maintenance 210
- Led blinks no connection with troubleshooting 210
- Led off 210
- Led on 210
- 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 210
- Troubleshooting by led on the indoor unit s 210
- Troubleshooting can be carried out by service monitor led green blinks when normal 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 210
- Explanation for symbols 211
- Indoor unit 211
- Malfunction code and led display table 211
- Troubleshooting by remote controller display led display 211
- Failure of indoor unit pc board 212
- Troubleshooting detail 212
- Applicable models 213
- Malfunction decision conditions 213
- Malfunction of drain water level system float type 213
- Method of malfunction detection 213
- Remote controller display 213
- Supposed causes 213
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 214
- Service diagnosis 203 214
- Sie18 201 troubleshooting skyair indoor unit 214
- Troubleshooting 214
- Indoor unit fan motor lock 215
- Swing flap motor malfunction lock 216
- Applicable models 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 217
- Failure of capacity setting 217
- Failure of capacity setting adaptor connection failure of indoor unit pc board 217
- Malfunction decision conditions 217
- Method of malfunction detection 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 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 217
- Remote controller display 217
- Supposed causes 217
- Troubleshooting 217
- All indoor unit models 218
- Applicable models 218
- Failure of the sensor itself broken or disconnected wire failure of electronic circuitry indoor unit pc board failure of connector contact 218
- Malfunction decision conditions 218
- Malfunction detection is carried out by temperature detected by heat exchanger sensor 218
- Malfunction of heat exchange temperature sensor system 218
- Method of malfunction detection 218
- Remote controller display 218
- Supposed causes 218
- Thermistor temperature and resistance conversion table 218
- Troubleshooting 218
- When the heat exchanger thermistor becomes disconnected or short circuited while the unit is running 218
- Aii indoor unit models 219
- Applicable models 219
- Failure of the sensor itself broken or disconnected wire failure of indoor unit pc board failure of connector contact 219
- Malfunction decision conditions 219
- Malfunction detection is carried out by temperature detected by suction air temperature sensor 219
- Malfunction of suction air temperature sensor system 219
- Method of malfunction detection 219
- Remote controller display 219
- Supposed causes 219
- Thermistor temperature and resistance conversion table 219
- Troubleshooting 219
- When the suction air temperature sensor s thermistor becomes disconnected or short circuited while the unit is running 219
- Check no refer to p 49 220
- Check no refer to p 55 220
- 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 220
- Supposed causes 220
- The unit runs but doesn t cool heat the room 220
- Troubleshooting 220
- Troubleshooting outdoor unit related 220
- Service diagnosis 221
- Troubleshooting 221
- Troubleshooting outdoor unit related sie18 201 221
- 7 seg display on the outdoor p c board 222
- Seg display on the outdoor p c board 222
- Service diagnosis 211 222
- Sie18 201 troubleshooting outdoor unit related 222
- Trouble daignosis 222
- Check no refer to p 49 223
- Check no refer to p 50 223
- Continuity of the high pressure switch is detected by the safety device circuitry 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 223
- High pressure malfunction 223
- Malfunction decision conditions 223
- Method of malfunction detection 223
- Outdoor unit indication 223
- Supposed causes 223
- The 4 time counter resets itself when no outdoor unit abnormality occurs within 60 minute cumulative time after the error generation 223
- Troubleshooting 223
- Troubleshooting detail 223
- When hps malfunction is generated 4 times the system shuts down 223
- Compressor lock 224
- Check no refer to p 50 225
- Fan lock is detected using the voltage signal given to the fan and number of turns of the fan motor 225
- Fan lock overcurrent 225
- Interference by foreign matters with propeller faulty fan pc board faulty fan motor 225
- Malfunction decision conditions 225
- Method of malfunction detection 225
- Outdoor unit indication 225
- Overcurrent is detected by the signal from driver 225
- Supposed causes 225
- Troubleshooting 225
- 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 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 225
- Check no refer to p 49 226
- Check no refer to p 51 226
- Check no refer to p 52 226
- Check no refer to p 53 226
- 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 226
- Inv input current error is detected using inv input current detected by ct 226
- Malfunction decision conditions 226
- Method of malfunction detection 226
- Operation halt due to detection of inv input current error 226
- Outdoor unit indication 226
- Supposed causes 226
- Troubleshooting 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 226
- When the inverter input current of 28a or more continued for 2 seconds 226
- Detection by checking continuity and lack of connector 227
- Faulty electronic expansion valve faulty harness of electronic expansion valve incorrect connectors connection of electronic expansion valve outside cause noise etc 227
- Malfunction decision conditions 227
- Malfunction is determined by no common voltage applied when turning the power supply on 227
- Malfunction of electronic expansion valve 227
- Method of malfunction detection 227
- Note the applicable part of motorized valve is displayed via rotary switch 01 227
- Outdoor unit indication 227
- Supposed causes 227
- Troubleshooting 227
- Malfunction decision conditions 228
- Method of malfunction detection 228
- Operation halt due to discharge pipe temperature control 228
- Outdoor unit indication 228
- Supposed causes 228
- Troubleshooting 228
- Lp drop error 229
- Malfunction decision conditions 229
- Malfunction of lp sensor faulty contact of lp sensor connector gas shortage heating operation under low outside air temperature beyond the operative area 229
- Method of malfunction detection 229
- Outdoor unit indication 229
- Supposed causes 229
- Troubleshooting 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 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 229
- Continuity of high pressure switch is detected by the safety device circuitry 230
- Faulty high pressure switch disconnection of high pressure switch harness faulty connectors connection of high pressure switch 230
- Malfunction decision conditions 230
- Malfunction of high pressure switch system 230
- Method of malfunction detection 230
- Outdoor unit indication 230
- Supposed causes 230
- Troubleshooting 230
- When the compressor is off and the high pressure switch doesn t have continuity 230
- Check no refer to p 52 231
- Check no refer to p 53 231
- Faulty start of the compressor is detected by checking the turning information of the compressor via position detector of electrical parts 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 231
- Malfunction decision conditions 231
- Method of malfunction detection 231
- Operation halt due to faulty position detection sensor 231
- Outdoor unit indication 231
- Supposed causes 231
- Troubleshooting 231
- When the compressor did not turn in approximately 15 seconds after starting operation frequency 4 times clear condition 60 minute continuous run normal 231
- Check no refer to p 50 232
- Fan malfunction is detected by checking 3 numbers motor position detection signal 232
- Fan position detection error 232
- Incorrect connectors connection faulty fan pc board faulty fan motor 232
- Malfunction decision conditions 232
- Method of malfunction detection 232
- Outdoor unit indication 232
- Supposed causes 232
- Troubleshooting 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 232
- When the same state with 3 numbers motor position detection signal was kept for 5 seconds 232
- Check no 1 refer to p 56 233
- Check no refer to p 51 233
- Ct errors are detected using the compressor s operating frequency and the input current detected by the ct 233
- Incorrect connectors connection faulty thermistor faulty power transistor breaking of wire or faulty connection of internal wiring faulty reactor faulty pcb 233
- Malfunction decision conditions 233
- Method of malfunction detection 233
- Operation halt due to detection of ct error 233
- Outdoor unit indication 233
- Supposed causes 233
- Troubleshooting 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 233
- When the compressor s rotating speed is 64rps or more and the ct input is 2 a or less 233
- Faulty outside air temperature sensor faulty connectors connection of outside air temperature sensor 234
- Faulty outside air thermistor 234
- Malfunction decision conditions 234
- Method of malfunction detection 234
- Outdoor unit indication 234
- Supposed causes 234
- Troubleshooting 234
- When the outside air temperature sensor became short circuited or open 234
- Faulty discharge temperature sensor faulty connectors connection of discharge temperature sensor 235
- Faulty discharge thermistor 235
- Malfunction decision conditions 235
- Method of malfunction detection 235
- Outdoor unit indication 235
- Supposed causes 235
- Troubleshooting 235
- When the discharge temperature sensor became short circuited or open 235
- Faulty of suction thermistor 236
- Faulty suction temperature sensor faulty connectors connection of suction temperature sensor 236
- Malfunction decision conditions 236
- Method of malfunction detection 236
- Outdoor unit indication 236
- Supposed causes 236
- Troubleshooting 236
- When the suction temperature sensor became short circuited or open 236
- Faulty heat exchanger temperature sensor faulty connectors connection of heat exchanger temperature sensor 237
- Faulty heat exchanger thermistor 237
- Malfunction decision conditions 237
- Method of malfunction detection 237
- Outdoor unit indication 237
- Supposed causes 237
- Troubleshooting 237
- When the heat exchanger temperature sensor became short circuited or open 237
- Faulty liquid pipe temperature sensor faulty connectors connection of liquid pipe temperature sensor 238
- Faulty of liquid pipe thermistor 238
- Malfunction decision conditions 238
- Method of malfunction detection 238
- Outdoor unit indication 238
- Supposed causes 238
- Troubleshooting 238
- When the liquid pipe temperature sensor became short circuited or open 238
- Faulty bp liquid pipe temperature sensor faulty connectors connection of bp liquid pipe temperature sensor 239
- Faulty bp liquid pipe thermistor 239
- Malfunction decision conditions 239
- Method of malfunction detection 239
- Outdoor unit indication 239
- Supposed causes 239
- Troubleshooting 239
- When the bp liquid pipe temperature sensor became short circuited or open 239
- Faulty bp gas pipe temperature sensor faulty connectors connection of bp gas pipe temperature sensor 240
- Faulty bp gas pipe thermistor 240
- Malfunction decision conditions 240
- Method of malfunction detection 240
- Outdoor unit indication 240
- Supposed causes 240
- Troubleshooting 240
- When the bp gas pipe temperature sensor became short circuited or open 240
- Abnormal lp error 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 5 241
- 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 241
- Malfunction decision conditions 241
- Method of malfunction detection 241
- Outdoor unit indication 241
- Supposed causes 241
- Troubleshooting 241
- When either of 1 3 conditions mentioned above was satisfied 241
- Check no refer to p 49 242
- Detection of abnormal rise in box temperature is carried out by the temperature detected by thermistor 242
- Incorrect installation abnormally high ambient temperature of electrical parts outside causes other than noise etc 242
- Malfunction decision conditions 242
- Method of malfunction detection 242
- Outdoor unit indication 242
- Rise in box temperature 242
- Supposed causes 242
- Troubleshooting 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 242
- When the detected box temperature came to 85 c or higher 242
- Abnormal rise in fin temperature 243
- Malfunction decision conditions 244
- Method of malfunction detection 244
- Operation halt due to detection of output overcurrent 244
- Outdoor unit indication 244
- Supposed causes 244
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 245
- Check no refer to p 49 245
- Check no refer to p 52 245
- Check no refer to p 53 245
- Service diagnosis 245
- Troubleshooting 245
- Troubleshooting outdoor unit related sie18 201 245
- Abnormality of integrated input current is detected using integrated input current detected by the ct 246
- Check no refer to p 49 246
- Check no refer to p 51 246
- Check no refer to p 52 246
- Check no refer to p 53 246
- Faulty compressor overcurrent due to faulty pc board incorrect detection due to faulty pc board short circuit 246
- Integrated input current stop 246
- Malfunction decision conditions 246
- Method of malfunction detection 246
- Outdoor unit indication 246
- Supposed causes 246
- Troubleshooting 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 246
- When the integrated input current of 31a continued for 2 seconds 246
- Electronic thermal 247
- Malfunction decision conditions 247
- Method of malfunction detection 247
- Outdoor unit indication 247
- Supposed causes 247
- Troubleshooting 247
- Malfunction decision conditions 248
- Method of malfunction detection 248
- Outdoor unit indication 248
- Stall prevention 248
- Supposed causes 248
- Troubleshooting 248
- Transmission error between microcomputers 249
- Check no 1 refer to p 56 250
- Check no 2 refer to p 57 250
- Check no refer to p 51 250
- Electrolytic capacitor malfunction pam module malfunction faulty power transistor disconnection faulty connection of internal wiring faulty reactor faulty pc board 250
- Instantaneous power failure mismatching with power supply of feedback control system 250
- Malfunction decision conditions 250
- Method of malfunction detection 250
- Outdoor unit indication 250
- Overvoltage low voltage 250
- Power supply system error is detected using the voltage of inverter dc unit 250
- Supposed causes 250
- Troubleshooting 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 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 250
- 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 251
- Malfunction decision conditions 251
- Method of malfunction detection 251
- Outdoor unit indication 251
- Supposed causes 251
- Transmission error between outdoor unit and bp unit 251
- Transmission error is detected when the data from bp unit could not be correctly received 251
- Troubleshooting 251
- When the data from bp unit could not be correctly received continuously for 15 seconds 251
- Check no 4 refer to p 57 252
- Service diagnosis 241 252
- Sie18 201 troubleshooting outdoor unit related 252
- Troubleshooting 252
- Check no 4 refer to p 57 253
- Incorrect connection of transmission wire distortion of power supply waveform 253
- Malfunction decision conditions 253
- Method of malfunction detection 253
- Outdoor unit indication 253
- Supposed causes 253
- Transmission error between indoor unit and bp unit 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 253
- Troubleshooting 253
- When bp unit could not correctly receive the data from indoor unit continuously for 15 seconds and transmitted the data incorrectly to outdoor unit 253
- Incorrect connectors connection dc fan microcomputer malfunction outside causes noise etc malfunction of control pc board receiving circuit 254
- Malfunction decision conditions 254
- Method of malfunction detection 254
- Outdoor unit indication 254
- Supposed causes 254
- Transmission error of dc fan 254
- Troubleshooting 254
- When transmission error with dc fan microcomputer continued for 60 seconds 254
- Malfunction decision conditions 255
- Method of malfunction detection 255
- Operation halt due to detection of gas shortage 255
- Outdoor unit indication 255
- Supposed causes 255
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 256
- Check no refer to p 50 256
- Ct check refer to p 22 256
- Service diagnosis 245 256
- Sie18 201 troubleshooting outdoor unit related 256
- Troubleshooting 256
- Malfunction decision conditions 257
- Method of malfunction detection 257
- Outdoor unit indication 257
- Supposed causes 257
- System malfunction 257
- Troubleshooting 257
- Faulty box thermistor malfunction 258
- Faulty main unit pc board 258
- Malfunction decision conditions 258
- Malfunction of box temperature thermistor is detected using the temperature detected by the thermistor 258
- Method of malfunction detection 258
- Outdoor unit indication 258
- Supposed causes 258
- Troubleshooting 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 258
- When the detected temperature came to 92 c or higher or to 30 c or lower 258
- Faulty fin thermistor 259
- Faulty fin thermistor is detected using the temperature detected by the fin 259
- Faulty sensor provided inside power transistor 259
- Malfunction decision conditions 259
- Method of malfunction detection 259
- Outdoor unit indication 259
- Supposed causes 259
- Troubleshooting 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 259
- When the detected temperature came to 120 c or higher or to 30 c or lower 259
- Check no 260
- Discharge pressure check 260
- How to check 260
- Installation condition check 260
- Service diagnosis 249 260
- Sie18 201 troubleshooting outdoor unit related 260
- Check no 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 261
- Electronic expansion valve check 261
- Fan motor position signal check 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 261
- It is ok if as shown above 3 approximately 5v voltage is turned on and off 261
- Locations for measurement upper lower fans u v w phase multiple meter side a side b 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 261
- Note please note that the latching sound varies depending on the valve type 261
- Service diagnosis 261
- Troubleshooting outdoor unit related sie18 201 261
- Check no 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 262
- Internal wiring check 1 262
- Service diagnosis 251 262
- Sie18 201 troubleshooting outdoor unit related 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 263
- Check no 263
- Power transistor check capacitor voltage check 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 263
- Check no 264
- Output current measurement 264
- Output voltage measurement 264
- Power transistor output check 264
- Check no 265
- R25 20k ω b 3950 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 265
- Thermistor resistance check 265
- Check no 266
- Check no 0 266
- Inverter units input current measurement 266
- Inverter units refrigerant system check 266
- Mount a clamp meter to the red harness indicated by the arrow and conduct forced cooling operation in the case of rmx140jvmc 266
- Service diagnosis 255 266
- Sie18 201 troubleshooting outdoor unit related 266
- Check no 1 267
- Check no 2 267
- Electrolytic capacitor capacity check 267
- Service diagnosis 267
- Troubleshooting outdoor unit related sie18 201 267
- Voltage check when starting the compressor 267
- Check no 3 268
- Check no 4 268
- Fig fig 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 268
- Power supply waveforms check 268
- Service diagnosis 257 268
- Sie18 201 troubleshooting outdoor unit related 268
- Total operating current check 268
- Check no 5 269
- Check no 6 269
- 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 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 7 269
- 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 269
- Inverter units hall ic check 269
- Inverter units indoor unit pcb 2 output voltage check 269
- Service diagnosis 269
- The connector has 3 pins and there are three patterns of lead wire colors 269
- Troubleshooting outdoor unit related sie18 201 269
- Bp unit trouble diagnosis 270
- In case of bpmk928a43only 270
- Led on branch provider unit diagnosis leds 270
- Pcb parts layout 270
- Service diagnosis 259 270
- Sie18 201 bp unit trouble diagnosis 270
- For bpmk928b42 43 62 272
- Indoor unit 92 272
- Outdoor unit 70 272
- Part 10 removal procedure 272
- For bpmk928b42 43 273
- Installation of indoor unit 273
- Procedure 273
- Opening of electrical box cover and removal of pcb mount 274
- Procedure 274
- Procedure 276
- Removal of motorized valve 276
- Disconnect the thermistor harness connector from the pcb 279
- For bpmk928b42 43 sie18 201 279
- Procedure 279
- Removal of thermistor 279
- Removal procedure 279
- Secure a replacement thermistor onto the pipe with aluminium tape provide thermal insulation from above 279
- Step procedure points 279
- The factory installed thermistors cannot be replaced thermistor positions and connector pins 279
- Tighten the tie wrap to secure the above tape 279
- Warning be sure to turn off all power supplies before disassembling work 279
- Outdoor unit 281
- Procedure 281
- Removal of outer panels 281
- Procedure 282
- Removal of pcb and electrical box 282
- Disconnect the two relay connectors on the side 285
- Remove the two lock screws from the front section 285
- Slide the front section to the right and release it off the two hooks at the back 285
- Detaching the control pcb 287
- Disconnect all the connectors remove the two screws from the control pcb 287
- Outdoor unit sie18 201 287
- Removal procedure 287
- Remove the two screws from the electrolytic capacitor 287
- Step procedure points 287
- The control pcb is located as shown at right 287
- The pcb1 and pcb4 are integrally constructed 287
- The setting and self diagnostic pcb is located also as shown at right 287
- Detaching the fan control pcb 289
- The fan control pcb is located as shown at right remove the four locking card spacers and detach the pcb 289
- Procedure 290
- Removal of propeller fans and fan motors 290
- Procedure 292
- Removal of thermistor 292
- Procedure 293
- Removal of motorized valve 293
- Procedure 295
- Removal of sound insulation 295
- Draw out the sound insulation cover from the bottom of the compressor 296
- Open the sound insulation and draw it out 296
- Undo the two points of the sound insulation fixture string 296
- Procedure 297
- Removal of compressor 297
- Procedure 299
- Removal of 4 way valve 299
- Indoor unit 303
- Refer following table for indoor unit removal procedure 303
- Installation 94 304
- Others 04 304
- Part 11 cautions before operation 304
- Wiring 98 304
- Carrying in 305
- Installation 305
- Installation procedure 305
- Installation service space the horizontal coupling and stacking are not allowed 305
- Outdoor unit 305
- Caution before operation 295 306
- Sie18 201 installation 306
- Be sure to leave a 600mm square opening for service and maintenance 307
- Bp unit 307
- Brazing 307
- Brazing branch piping 307
- Collective indication label 307
- Cut line 307
- Cut line for 307
- Cut line for i d 307
- Dimple 307
- Earth terminal m4 307
- For branch piping gas 307
- For branch piping liquid 307
- For main piping gas 307
- I d ø 307
- I d ø19 cut 307
- I d ø6 cut 307
- I d ø9 cut 307
- Indication label for indoor unit indication label for outdoor unit 307
- Inspection opening 307
- Installation 307
- Main piping 307
- O d ø15 cut 307
- Precaution 307
- Precaution cut the piping on the standard accessories to match the indoor unit s piping diameter 307
- Servicing space 307
- Suspension bolt pitch 307
- Terminal 307
- Wall mounted 307
- Wiring clamp 307
- Wiring clasps 307
- Caution before operation 297 308
- Cautions 308
- Installation of the main unit 308
- Sie18 201 installation 308
- Connection electric wire treatment caution 309
- Electric wiring connection 309
- Outdoor unit 309
- Wiring 309
- Be sure to attach this 310
- Bp unit connection priority 310
- Caution before operation 299 310
- Make sure numbers 1 2 and 3 all match 310
- Sie18 201 wiring 310
- Bp unit 311
- Caution before operation 311
- Connecting the wiring 311
- Room a 311
- Room b 311
- Room c 311
- Warning 311
- Wiring sie18 201 311
- Caution before operation 301 312
- Cautions 312
- Operating test 312
- Room a 312
- Room b 312
- Room c 312
- Sie18 201 wiring 312
- Warning 312
- Caution before operation 313
- Outdoor unit rotary switch setting 313
- Wiring sie18 201 313
- Caution before operation 303 314
- Sie18 201 wiring 314
- Explanation for ftx25 35j series 315
- For cooling operation in case of low ambient temperature 315
- For heat pump 315
- Others 315
- Test run from the remote controller for heat pump model only 315
- Centralized control for krc72 krp413a1s 316
- Dry keep change over switch all indoor models for cooling only and heat pump model 316
- For an explanation on usage see the option handbook however do the following when using the krp413a1s contact connection centralized control pc board 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 316
- Method of operating air conditioners individually when two units are installed in one room for cooling only and heat pump model 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 316
- 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 316
- Wireless remote controller cut the jumper j4 316
- Adjusting the angle of the intelligent eye sensor 317
- Explanation for cdk x 25 60h series 318
- Method of operating air conditioners individually when two units are installed in one room for cooling only and heat pump model 318
- Test run from the remote controller for heat pump model only 318
- Centralized control for krc72 krp411a1s and krp410a11s 319
- Dry keep change over switch all indoor models for cooling only and heat pump model 319
- For an explanation on usage see the option handbook however do the following when using the krp410a11s contact connection centralized control pc board 319
- 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 319
- Part 12 appendix 320
- Piping diagrams 10 320
- Wiring diagrams 17 320
- Appendix 321
- Outdoor units 321
- Piping diagrams 321
- Piping diagrams sie18 201 321
- Rmx140jvmb rmx140jzvmb 321
- Appendix 311 322
- Bp units 322
- Bpmk928b42 322
- Bpmk928b43 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 322
- Sie18 201 piping diagrams 322
- Appendix 323
- Ftx25 35jav1nb 323
- Ftxd50 60 71jv1b 323
- Indoor unit 323
- Indoor units 323
- Piping diagrams sie18 201 323
- Appendix 313 324
- Cdx25 35 50 60hav1nb cdx25 35 50 60jv1nb 324
- Flx25 35hv1nb 324
- Sie18 201 piping diagrams 324
- A 6 9 6 9 325
- Appendix 325
- B 12 15 12 15 325
- Fhyb35 45 60 71fk7v1 fhyc35 45 60 71b7v1 325
- Fhyc35 45 fhyc60 71 fhyb35 45 fhyb60 71 325
- Field piping φ a cut 325
- Field piping φ b cut 325
- Flx50 60jv1b 325
- Piping diagrams sie18 201 325
- Appendix 315 326
- Ftk50 60hvec ftx50 60hvec 326
- Ftxd25 35kzv1b 326
- Indoor unit 326
- Sie18 201 piping diagrams 326
- Appendix 327
- Fvx25 35kzv1b 327
- Indoor unit 327
- Piping diagrams sie18 201 327
- Appendix 317 328
- Magnetic 328
- Outdoor units 328
- Rmx140jvmb rmx140jzvmb 328
- Ry3x ry84 328
- Sie18 201 wiring diagrams 328
- Wiring diagrams 328
- Appendix 329
- Bp units 329
- Bpmk928b42 329
- Bpmk928b43 329
- Wiring diagrams sie18 201 329
- Cooling only 330
- Fhyc35 45 60 71b7v1 330
- Indoor units 330
- Fhyb35 45 60 71fk7v1 331
- Appendix 321 332
- Ftx25 35jav1nb ftxd25 35kzv1b 332
- Ftxd50 60 71jv1b 332
- Heat pump 332
- Sie18 201 wiring diagrams 332
- Appendix 333
- Cdx25 35 50 60hav1nb cdx25 35 50 60jv1nb 333
- Flx25 35hv1nb 333
- Wiring diagrams sie18 201 333
- Appendix 323 334
- Caution 334
- Flx50 60jv1b 334
- Fvx25 35kzv1b 334
- Sie18 201 wiring diagrams 334
- Numerics 336
- Symbols 336
- Drawings flow charts 340
- Numerics 340
- B 8400 ostend belgium 344
- Internet http www daikineurope com 344
- Sie18 201 05 2003 prepared in belgium by vanmelle 344
- Zandvoordestraat 300 344
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