![Daikin FXDQ32PVET [316/394] Check 3 check the factors of overheat operation identify the defective points referring to the failure factor analysis fta as follows](/img/pdf.png)
Daikin FXDQ32PVET [316/394] Check 3 check the factors of overheat operation identify the defective points referring to the failure factor analysis fta as follows
![Daikin FXDQ25PVET [316/394] Check 3 check the factors of overheat operation identify the defective points referring to the failure factor analysis fta as follows](/views2/1702715/page316/bg13c.png)
Si34-704 Troubleshooting (OP: Unified ON/OFF Controller)
Troubleshooting 305
[CHECK 3] Check the Factors of Overheat Operation
Identify the defective points referring to the failure factor analysis (FTA) as follows.
Irregular piping length
Bend/collapse
(Including moisture choke)
Stop valve is closed.
4 way switch valve is in the
middle position.
Leak from hot gas bypass
valve
Subcooling
motor
operated
valve failure
Control
failure
Defective valve coil
Defective control PCB
Defective valve body
Defective valve coil
Defective valve body
Defective low pressure
sensor
Defective thermister for
suction pipe
Defective control PCB
Defective thermister for
indoor unit gas pipe
Defective thermister for
indoor unit liquid pipe
∗1: Refer to “Low pressure protective control” (P.106) for hot gas bypass control.
∗2: Refer to P.98 for subcooling motor operated valve control.
∗3: “Superheating temperature control” in cooling mode is conducted by indoor unit motor operated valve. (Refer to P.121)
∗4: Judgment criteria of superheat operation:
Suction gas superheating temperature: 10 degrees and over.
Discharge gas superheating temperature: 45 degrees
and over, except for immediately after starting and drooping control, etc..
(Use the above stated values as a guide. Depending on the other conditions, the unit may be normal despite the values
within the above scope.)
←
Check if coil resistance and insulation
are normal.
←
Check if coil resistance and
insulation are normal.
←
Check if the voltage property is
normal.
←
Check if the connector is connected properly.
Check if the thermister resistance property
is normal.
←
Check if the piping temperature connected
to the 4 way switch valve is normal.
←
Check if the pressure value given by the
service checker corresponding to actual
measurement value by the sensor.
←
Check if coil resistance and insulation are
normal.
←
Check if the connector is connected properly.
Check if the thermister resistance property is
normal.
←
Check if the connector is connected properly.
Check if the thermister resistance property is
normal.
←
Check if the connector is connected properly.
Check if the thermister resistance property is normal.
←
Check if coil resistance and insulation are
normal.
←
Check if the voltage property is normal.
←
Refer to [Check 7]
←
Check if the pressure value given by the
service checker corresponding to actual
measurement value by the sensor.
←
Does the piping length fall in the permissible range?
←
Corduet visual checks.
←
Remove the moisture by vacuum break. (Refer to [Check 8])
←
Check if the stop valve is open.
Faulty
discharge
pipe
temperature
control
Faulty hot
gas bypass
control
Hot gas circuit clogging
Defective solenoid
valve coil
Defective solenoid
valve body
Defective control PCB
Defective control
PCB
Defective valve coil
Defective low
pressure sensor
Defective subcool
heat exchange
outlet thermister
Defective valve
body
Faulty
subcooling
motorized
valve control
(EV2)
Superheat due to
shaft damage
Superheat due to
defective compressor
Indoor unit
motorized
valve failure
Faulty control
Faulty control
Outdoor unit
motorized
valve failure
Faulty of 4 way
switch valve
operation
[In cooling mode only]
(∗1)
(∗2)
Compressor
overheat
Refrigerant gas
shortage
Large resistance
of piping
Faulty
superheated
degree
control.
[In cooling mode]
When indoor unit
electronic
expansion valve
becomes too
narrow (∗3)
[In heading
mode]When
outdoor unit
electronic
expansion
valve
becomes too
narrow (∗4)
Temperature
increase of
discharge
pipe
Содержание
- Basic control 6 2
- Combination of outdoor units 4 model selection 2
- Function general 4 2
- Functional parts layout 9 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Part 1 general information 2
- Part 2 specifications 3 2
- Part 3 refrigerant circuit 9 2
- Part 4 function 3 2
- R 410a cooling only 50hz 2
- Refrigerant circuit 0 2
- Refrigerant flow for each operation mode 4 2
- Specifications 4 2
- Table of contents 2
- Other control 10 3
- Outdoor unit pc board layout 44 3 field setting 45 3
- Outline of control indoor unit 16 3
- Part 5 test operation 27 3
- Part 6 troubleshooting 77 3
- Protection control 05 3
- Special control 9 3
- Symptom based troubleshooting 79 2 troubleshooting by remote controller 82 3
- Test operation 28 3
- Troubleshooting by indication on the remote controller 98 4
- List of electrical and functional parts 44 5
- Option list 52 5
- Part 7 appendix 13 5
- Piping diagrams 14 5
- Troubleshooting op central remote controller 93 5
- Troubleshooting op unified on off controller 98 5
- Wiring diagrams for reference 21 5
- Drawings flow charts v 6
- Index i 6
- Part 8 precautions for new refrigerant r 410a 67 6
- Caution in repair 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Cautions regarding products after repair 8
- Warning 8
- Caution 9
- Inspection after repair 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Using icons 10
- Using icons list 10
- Preface 11
- Part 1 general information 12
- General information 13
- High cop series energy saving series 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Model names of indoor outdoor units si34 704 13
- Note fxdq has following 2 series as shown below fxdq p n a vet without drain pump for general asia except for eu china and australia fxdq p n a ve with drain pump bev unit is required for fxuq only ma na rohs directive models specifications dimensions and other functions are not changed compared with m n type 13
- Outdoor units normal series space saving series 13
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type multi flow 14
- Ceiling mounted duct type 14
- Ceiling suspended cassette type connection unit series 14
- Ceiling suspended type 14
- Concealed floor standing type 14
- External appearance 14
- Floor standing type 14
- General information 3 14
- Indoor units 14
- Outdoor air processing unit 14
- Si34 704 external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- External appearance si34 704 15
- General information 15
- Normal series space saving series 15
- Outdoor units 15
- Rxq12p 14p 16p 18p 15
- Rxq20p 22p 24p 26p 28p rxq30p 32p 34p 36p 15
- Rxq38p 40p 42p 44p 46p rxq48p 50p 52p 54p 15
- Rxq5p rxq8p 10p 15
- General information 5 16
- High cop series energy saving series 16
- Rxq16ph 18ph rxq24ph 26ph 16
- Rxq28ph 30ph 16
- Rxq32ph 34ph 16
- Rxq36ph 38ph 40ph 42ph 44ph 46ph 48ph 50ph 16
- Si34 704 external appearance 16
- Combination of outdoor units 17
- Combination of outdoor units high cop series energy saving series 19
- Combination of outdoor units normal series space saving series 19
- General information 19
- Model selection 19
- Model selection si34 704 19
- Vrv iii cooling only series 19
- Capacity range of outdoor units normal series space saving series 20
- General information 9 20
- High cop series energy saving series 20
- Si34 704 model selection 20
- Connectable indoor unit 21
- Equivalent output 0 hp 1hp 21
- Fxdq p nave with drain pump 21
- Fxdq p nvet without drain pump for general asia except for eu china and australia 21
- General information 21
- Hp 2 hp 2 hp 3 hp 4hp 5hp 8hp 10hp 21
- In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 21
- Indoor unit capacity 21
- Model selection si34 704 21
- New refrigerant model code p20 type p25 type p32 type p40 type p50 type p63 type p80 type p100 type p125 type p200 type p250 type selecting model capacity 2 kw 2 kw 3 kw 4 kw 5 kw 7 kw 9 kw 11 kw 14 kw 22 kw 28 kw 21
- Note fxdq has following 2 series as shown below 21
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 21
- Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw 21
- Differences from conventional models 22
- Part 2 specifications 24
- Specifications 4 24
- Outdoor unit s 25
- Specifications 25
- Specifications si34 704 25
- Si34 704 specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si34 704 27
- Si34 704 specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si34 704 29
- Si34 704 specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si34 704 31
- Si34 704 specifications 32
- Specifications 21 32
- Specifications 33
- Specifications si34 704 33
- Si34 704 specifications 34
- Specifications 23 34
- Specifications 35
- Specifications si34 704 35
- Si34 704 specifications 36
- Specifications 25 36
- Specifications 37
- Specifications si34 704 37
- Si34 704 specifications 38
- Specifications 27 38
- Specifications 39
- Specifications si34 704 39
- Si34 704 specifications 40
- Specifications 29 40
- Specifications 41
- Specifications si34 704 41
- Si34 704 specifications 42
- Specifications 31 42
- Specifications 43
- Specifications si34 704 43
- Si34 704 specifications 44
- Specifications 33 44
- Specifications 45
- Specifications si34 704 45
- Ceiling mounted cassette type double flow 46
- Indoor units 46
- Si34 704 specifications 46
- Specifications 35 46
- Ceiling mounted cassette type double flow 47
- Specifications 47
- Specifications si34 704 47
- Ceiling mounted cassette type multi flow 48
- Si34 704 specifications 48
- Specifications 37 48
- Ceiling mounted cassette type multi flow 49
- Specifications 49
- Specifications si34 704 49
- Ceiling mounted cassette corner type 50
- Si34 704 specifications 50
- Specifications 39 50
- Slim ceiling mounted duct type with drain pump 51
- Specifications 51
- Specifications si34 704 51
- Si34 704 specifications 52
- Slim ceiling mounted duct type with drain pump 52
- Specifications 41 52
- Slim ceiling mounted duct type without drain pump 53
- Specifications 53
- Specifications si34 704 53
- Si34 704 specifications 54
- Slim ceiling mounted duct type without drain pump 54
- Specifications 43 54
- Slim ceiling mounted duct type pve with drain pump pvet without drain pump 55
- Specifications 55
- Specifications si34 704 55
- Ceiling mounted built in type 56
- Si34 704 specifications 56
- Specifications 45 56
- Ceiling mounted built in type 57
- Specifications 57
- Specifications si34 704 57
- Ceiling mounted built in type 58
- Si34 704 specifications 58
- Specifications 47 58
- Ceiling mounted duct type 59
- Specifications 59
- Specifications si34 704 59
- Ceiling mounted duct type 60
- Si34 704 specifications 60
- Specifications 49 60
- Ceiling suspended type 61
- Specifications 61
- Specifications si34 704 61
- Si34 704 specifications 62
- Specifications 51 62
- Wall mounted type 62
- Specifications 63
- Specifications si34 704 63
- Wall mounted type 63
- Floor standing type 64
- Si34 704 specifications 64
- Specifications 53 64
- Floor standing type 65
- Specifications 65
- Specifications si34 704 65
- Concealed floor standing type 66
- Si34 704 specifications 66
- Specifications 55 66
- Concealed floor standing type 67
- Specifications 67
- Specifications si34 704 67
- Bev units 68
- Ceiling suspended cassette type 68
- Si34 704 specifications 68
- Specifications 57 68
- Outdoor air processing unit 69
- Specifications 69
- Specifications si34 704 69
- Functional parts layout 9 70
- Part 3 refrigerant circuit 70
- Refrigerant circuit 0 70
- Refrigerant flow for each operation mode 4 70
- Refrigerant circuit 71
- Refrigerant circuit si34 704 71
- Refrigerant circuit 61 72
- Si34 704 refrigerant circuit 72
- Refrigerant circuit 73
- Refrigerant circuit si34 704 73
- Refrigerant circuit 63 74
- Si34 704 refrigerant circuit 74
- Refrigerant circuit 75
- Refrigerant circuit si34 704 75
- Rxq10p 12p 75
- Refrigerant circuit 65 76
- Rxq10p 12p 76
- Si34 704 refrigerant circuit 76
- Refrigerant circuit 77
- Refrigerant circuit si34 704 77
- Rxq14p 16p 18p 77
- Refrigerant circuit 67 78
- Rxq14p 16p 18p 78
- Si34 704 refrigerant circuit 78
- Main control equipment 79
- Outdoor air processing unit fxmq125mfv1 250mfv1 79
- Refrigerant system 79
- Sh control superheated control of heat exchanger outlet sc control subcooling control of heat exchanger outlet 79
- Thermistor 79
- Front view 80
- Functional parts layout 80
- Refrigerant circuit 69 80
- Si34 704 functional parts layout 80
- Front view 81
- Functional parts layout si34 704 81
- Refrigerant circuit 81
- Accumulator 82
- Front view 82
- Heat exchanger 82
- Refrigerant circuit 71 82
- Rxq10p 82
- Si34 704 functional parts layout 82
- Accumulator 83
- Front view 83
- Functional parts layout si34 704 83
- Heat exchanger 83
- Refrigerant circuit 83
- Rxq12p 83
- Accumulator 84
- Front view 84
- Heat exchanger 84
- Refrigerant circuit 73 84
- Rxq14p 16p 18p 84
- Si34 704 functional parts layout 84
- Refrigerant circuit 85
- Refrigerant flow for each operation mode 85
- Refrigerant flow for each operation mode si34 704 85
- Rxq5p cooling operation 85
- Cooling oil return operation 86
- Refrigerant circuit 75 86
- Si34 704 refrigerant flow for each operation mode 86
- Refrigerant circuit 87
- Refrigerant flow for each operation mode si34 704 87
- Rxq8p cooling operation 87
- Cooling oil return 88
- Refrigerant circuit 77 88
- Si34 704 refrigerant flow for each operation mode 88
- Refrigerant circuit 89
- Refrigerant flow for each operation mode si34 704 89
- Rxq10p 12p cooling operation 89
- Cooling oil return 90
- Refrigerant circuit 79 90
- Si34 704 refrigerant flow for each operation mode 90
- Refrigerant circuit 91
- Refrigerant flow for each operation mode si34 704 91
- Rxq14p 16p 18p cooling operation 91
- Cooling oil return operation 92
- Refrigerant circuit 81 92
- Si34 704 refrigerant flow for each operation mode 92
- Basic control 6 94
- Function general 4 94
- Other control 10 94
- Outline of control indoor unit 16 94
- Part 4 function 94
- Protection control 05 94
- Special control 9 94
- Function general 95
- Symbol 95
- Function 85 96
- In the event indoor unit stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 96
- Malfunction standby retry 96
- Operation mode 96
- Si34 704 function general 96
- 1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer 6 electronic expansion valve control on page 121 97
- Basic control 97
- Compressor pi control 97
- Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance 97
- Cooling operation 97
- List of functions in normal operation 97
- Normal operation 97
- Function 87 98
- Operating priority and rotation of compressors for multi standard connection system 98
- Si34 704 basic control 98
- Basic control si34 704 99
- Function 99
- In the case of combination of 3 outdoor units the above diagram shows master unit slave unit 1 and slave unit 2 from left to right compressors may operate in any pattern other than those mentioned above according to the operating status 99
- Inv std1 std2 99
- No 1 no 4 no 7 99
- No 2 no 5 no 8 99
- No 3 no 6 no 9 99
- Rxq40p 42p 44p 99
- Rxq46p 48p 99
- Rxq50p 52p 54p 99
- Compressor step control multi outdoor unit connection is available on the standard connection system compressor operations vary with the following steps according to information in 2 compressor pi control furthermore the operating priority of compressors is subject to information in 100
- Function 89 100
- Notes 1 inv inverter compressor std1 standard compressor 1 std2 standard compressor 2 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 100
- Operating priority and rotation of compressors 100
- Rxq10py1 12py1 100
- Rxq14py1 16py1 100
- Rxq18py1 100
- Rxq8py1 100
- Si34 704 basic control 100
- Stand alone installation rxq5py1 100
- Basic control si34 704 101
- Function 101
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 101
- Represents the range in which hz is not stepped up 101
- Rxq20py1 8 12hp 101
- Rxq22py1 10 12hp 101
- Two unit multi system 101
- Function 91 102
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 102
- Represents the range in which hz is not stepped up 102
- Rxq24py1 8 16hp 102
- Rxq26py1 8 18hp 102
- Si34 704 basic control 102
- Basic control si34 704 103
- Function 103
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 103
- Represents the range in which hz is not stepped up 103
- Rxq 32py1 16 16hp 103
- Rxq28py1 30py1 10 12 18hp 103
- Function 93 104
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 104
- Represents the range in which hz is not stepped up 104
- Rxq 34py1 16 18hp 104
- Rxq36py1 18 18hp 104
- Si34 704 basic control 104
- Basic control si34 704 105
- Function 105
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 105
- Represents the range in which hz is not stepped up 105
- Rxq 40py1 8 16 16hp 105
- Rxq38py1 8 12 18hp 105
- Three unit multi system 105
- Function 95 106
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 106
- Represents the range in which hz is not stepped up 106
- Rxq 42py1 8 16 18hp 106
- Rxq44py1 8 18 18hp 106
- Si34 704 basic control 106
- Basic control si34 704 107
- Function 107
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 107
- Represents the range in which hz is not stepped up 107
- Rxq46py1 48py1 10 12 18 18hp 107
- Rxq50py1 52py1 14 16 18 18hp 107
- Function 97 108
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 108
- Rxq54py1 18 18 18hp 108
- Si34 704 basic control 108
- 1 step on outdoor unit fan 109
- Electronic expansion valve pi control 109
- Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode 109
- For fan revolutions in each step refer to information as above 109
- Lapse of 20 sec 109
- Main motorized valve ev1 control fixed to open fully 109
- Outdoor unit fan control in cooling operation 109
- Pi control 109
- Step control of outdoor unit fans 109
- Subcooling motorized valve ev2 control makes pi control of the motorized valve y2e to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger 109
- Upper limit of outdoor unit fan revolutions step 7 109
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 109
- While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units 109
- Special control 110
- Startup control 110
- Startup control in cooling operation 110
- This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up 110
- In order to prevent the compressor from running out of oil the oil return operation is conducted to recover oil flown out from the compressor to the system side 111
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxq14 18p 111
- Oil return operation 111
- Oil return operation in cooling operation 111
- Start conditions referring to the set conditions for the following items start the oil return operation in cooling cumulative oil feed rate timer setting make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned on and then every eight hours furthermore the cumulative oil feed rate is computed from tc te and compressor loads 111
- Actuators are based on rxq14 18p 112
- If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted 112
- Pump down residual operation 112
- Pump down residual operation in cooling operation 112
- Actuators are based on rxq14 18p 113
- Crankcase heater control 113
- In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 113
- Restart standby 113
- Standby 113
- Used to forcedly stop the compressor for a period of 3 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 113
- Actuators are based on rxq14 18p 114
- In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times 114
- Stop due to malfunction 114
- Stopping operation 114
- This mode is used to define actuator operations when the system stops 114
- When system is in stop mode normal operation stop 114
- In heating operation the system operates with following mode 115
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 115
- While the master unit is in operation this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode in cooling operation same as that of normal operation stop 115
- High pressure protection control 116
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 116
- Protection control 116
- This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure 116
- Hot gas svp off 117
- Hot gas svp on 117
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 117
- Low pressure protection control 117
- Master unit 52 hz off off 117
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 117
- Discharge pipe protection control 118
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 118
- Inv compressor 118
- Std compressor 118
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 118
- Fin temp standby 119
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 119
- Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase 119
- Inverter fin temp 81 c continues for 3 min or more 119
- Inverter fin temperature control 119
- Inverter overcurrent protection control 119
- Inverter protection control 119
- Tfin 81 c inv upper limit rps max 119
- Under fin temperature protection control 119
- When occurring 4 times within 60 min the malfunction code l4 is output 119
- For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection 120
- Injection control only for rxq5p 120
- Std compressor overload protection 120
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 120
- After oil return operation at the beginning of the starting control there are outdoor units that stop operation in cooling low pressure of all outdoor units in operation is less than 0 5 mpa in cooling 121
- Details of outdoor unit rotation in the case of multi outdoor unit system each outdoor unit is given an operating priority for the control outdoor unit rotation makes it possible to change the operating priority of outdoor units thus the system becomes free of compressors that stop over an extended period of time at the time of partial loading preventing unbalanced oil level 121
- Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units 121
- In the case of multi outdoor unit system this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units 121
- Master unit slave unit 1 and slave unit 2 in this section are the names for installation they are determined in installation work and not changed thereafter these names are different from master unit and slave unit for control the outdoor unit connected the control wires f1 and f2 for the indoor unit should be designated as main unit consequently the led display on the main pc board for master unit slave unit 1 and slave unit 2 do not change refer to the page 114 121
- Other control 121
- Outdoor unit rotation 121
- Timing of outdoor unit rotation 121
- Caution in order to disable the compressor operation due to a failure or else be sure to do so in emergency operation mode never attempt to disconnect power supply wires from magnetic contactors or else doing so will operate compressors in combination that disables oil equalization between the compressors thus resulting in malfunctions of other normal compressors 122
- Emergency operation 122
- Restrictions for emergency operation 122
- In the case of 1 outdoor unit system rxq8p to 18p 123
- In the case of multi outdoor unit system rxq20p to 54p 123
- Note in order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state 124
- Demand operation 126
- In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting or demand 2 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adapter is required 126
- Drain pump control 127
- Outline of control indoor unit 127
- Note if the float switch is tripped five times in succession a drain malfunction is determined to have occurred af is then displayed as operation continues 128
- When the float switch is tripped and af is displayed on the remote controller 128
- Louver control for preventing ceiling dirt 129
- Thermostat sensor in remote controller 130
- Assuming that the suction air temperature at the time of starting the dry operation is tro and the suction air temperature in operation is tr 131
- Function 131
- Furthermore while in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode 131
- Outline of control indoor unit si34 704 131
- Thermostat control in dry operation 131
- Thermostat control while in normal operation 131
- Vrv multi systems are set at factory to thermostat control mode using the remote controller while in normal thermostat differential control mode i e factory set mode the thermostat turns off when the system reaches a temperature of 1 c from the set temperature while in cooling operation or of 1 c from that while in heating operation 131
- While in a single remote controller group control the body thermostat is only used fro this control furthermore while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 2 c for the value detected with the body thermostat through field settings the thermostat differential setting can be changed from 1 c to 0 c for details on the changing procedure refer to information on page onward 131
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 131
- Electronic expansion valve control 132
- Function 121 132
- Furthermore the default value of the optimal evaporator outlet superheated degree condenser outlet subcooled degree is 5 deg however this default value varies with the operating performance 132
- In cooling to maximize the capacity of indoor unit heat exchanger evaporator operate the electronic expansion valve under pi control so that the evaporator outlet superheated degree sh will become constant 132
- Si34 704 outline of control indoor unit 132
- Freeze prevention 133
- 1 l or ll only on fxfq models 134
- List of swing flap operations 134
- Swing flaps operate as shown in table below 134
- Control of outdoor air processing unit unique control for outdoor air processing unit 135
- Details outdoor air processing unit 135
- Objective to select cooling heating or fan operation mode according to the suction air outdoor air temperature 135
- Selection of operation mode by suction air thermostat 135
- Discharge air 136
- Discharge air temperature control 136
- Ev ev ev ev ev ev 136
- Is ev possible to close 136
- Is ev possible to open 136
- Refrigerant 136
- Sh t3 t2 136
- Temp setting 136
- Low outdoor air temperature protection control 137
- Outdoor unit pc board layout 44 3 field setting 45 138
- Part 5 test operation 138
- Test operation 28 138
- Below figure shows the installation process install in the order of the steps shown 139
- Installation process 139
- Test operation 139
- Check work prior to turn power supply on 140
- Follow the following procedure to conduct the initial test operation after installation 140
- Procedure and outline 140
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 141
- Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 141
- Check for normal operation 141
- Check the led display of the outdoor unit pc board 141
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 141
- Conduct check operations 141
- Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 157 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 141
- Make field settings with outdoor unit pc board 141
- Test operation 141
- Test operation si34 704 141
- The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length 141
- The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 141
- Turn outdoor unit and indoor unit power on 141
- Turn power on 141
- Absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 142
- Air tight test and vacuum drying 142
- Always use nitrogen gas for the airtightness test 142
- Preparations 142
- Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit 142
- See shutoff valve operation procedure for details on handling the shutoff valve refer page 133 142
- The airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right 142
- The refrigerant charge port is connected to unit pipe when shipped the unit contains refrigerant so use caution when attaching the charge hose 142
- The shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 142
- Additional refrigerant charge and check operation 143
- Air tight test and vacuum drying method 143
- Before working 143
- After tightening the cap make sure no refrigerant gas is leaking 144
- Be sure to use the correct tools 144
- Do not open the shutoff valve until 1 check work prior to turn power supply on in page 129 are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation 144
- Shutoff valve operation procedure 144
- The shutoff valve is not a back seat type if forced it to open it might break the valve body 144
- When operating the shutoff valve follow the procedure instructed below 144
- When using a service port use the charge hose 144
- 3 3 3 3 3 145
- 3 3 4 3 4 145
- 3 4 3 3 3 145
- 4 3 3 3 3 145
- 5 3 5 5 3 145
- How to check how many units are connected 145
- It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 145
- Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 145
- Procedure of adding refrigerant charging and check operation 146
- Fig 31 147
- Fig 32 147
- Fig 33 147
- Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db if you need to speed up in case of multi system connect the refrigerant cylinders to each outdoor unit as shown in the figure 33 147
- Open the valve c see the figure 31 the valve a b and the liquid and gas side shutout valve must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port if the additional charging amount was charged fully close the valve c and go to step 5 if the additional charging amount was not charged fully go to step 4 147
- Perform the refrigerant charging operation following refrigerant charging operation procedure as shown in page 137 and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit incase of multi system master unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a see the figure 33 for operating the push button and opening and closing the valve follow the work procedure 147
- Test operation 147
- Test operation si34 704 147
- Refrigerant charging operation procedure 148
- Step1 open the liquid and gas side shutoff valves the valve a c must be closed the valve a c means the valves in the figure 33 display of normal system 148
- Step2 if necessary set the field setting by using the dip switch on the outdoor unit pc board a1p for how to set see 1 onsite settings with the power off step3 close the el compo box lid and all front panel except on the side of the el compo box 1 and turn the power to the outdoor unit and all connected indoor units 2 after h2p stop blinking about 12 minutes after turning on the power check led displays as shown in the table display of normal system and the system is normal state if h2p is blinking check the malfunction code in the remote controller and correct the malfunction in accordance with remote controller display malfunction code in page 139 1 lead the refrigerant charge hose etc from the pipe intake all front panels must be closed at the procedure 9 2 if you perform the refrigerant charging operation within the refrigerant system that have the power off unit the operation cannot finish properly for confirming the number of the outdoor and indoor units with the power on see how 148
- Check of miswiring 149
- Check of refrigerant overcharge it takes about 40 minutes to complete the check operation 149
- Check of shutoff valve opening 149
- Check operation procedure 149
- How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 149
- Judgment of piping length 149
- Note for check operation the following work will be performed 149
- Step1 make the onsite setting as needed using the dip switches on the outdoor unit pc board a1p with the power off see 1 onsite settings with the power off step2 close the el compo box lid and all front panels except as the side of the el compo box and turn on the power to the outdoor unit and all connected indoor units be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater step3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 149
- Step4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 1 onsite settings with the power on step5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote controller after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote controller correct the malfunction following remote controller displays malfunction code and perform the check operation again 149
- If any malfunction codes other than the above are displayed check the service manual for how to respond 150
- Remote controller displays malfunction code 150
- Onsite settings 151
- Onsite settings with the power off 151
- Onsite settings with the power on 151
- Before test run 152
- Test run 152
- Checks after test run 153
- Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 154
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 154
- Operation when power is turned on 154
- Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 154
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 154
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 154
- When turning on power first time 154
- When turning on power the second time and subsequent 154
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 155
- 2 set mode display led leds display mode according to the setting 155
- 3 mode setting switch used to change mode 155
- 4 local setting switch used to make field settings 155
- Outdoor unit pc board 155
- Outdoor unit pc board layout 155
- Field set mode 156
- Field setting 156
- Field setting from remote controller 156
- First code no 156
- Mode no 156
- Second code no 156
- Unit no 156
- Wireless remote controller indoor unit 157
- Simplified remote controller 158
- Field setting si34 704 159
- Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 159
- Setting contents and code no vrv indoor unit 159
- Test operation 159
- Applicable range of field setting 160
- Contamination light 200 hrs 2 500 hrs 10 000 hrs contamination heavy 100 hrs 1 250 hrs 5 000 hrs 160
- Detailed explanation of setting modes 160
- Filter sign setting 160
- Filter specs setting standard long life ultra long life filter 160
- If switching the filter sign on time set as given in the table below set time 160
- Long life filter 160
- Mode no setting switch no setting position no setting 160
- Setting table 160
- Si34 704 field setting 160
- Static pressure selection 160
- Test operation 149 160
- Ultra long life filter 1 03 160
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 160
- Auto restart after power failure reset 161
- Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 2 in the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 161
- External on off input this input is used for on off operation and protection device input from the outside the input is performed from the t1 t1 terminal of the operation terminal block x1a in the electric component box 161
- Fan speed changeover when thermostat is off by setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 161
- For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 161
- For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 161
- Setting table 161
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 161
- Air flow adjustment ceiling height make the following setting according to the ceiling height the setting position no is set to 01 at the factory 162
- Air flow direction setting 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 01 162
- In the case of fxaq fxhq 162
- In the case of fxfq100 125 162
- In the case of fxfq25 80 162
- In the case of fxuq71 125 162
- Setting of air flow direction adjustment only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 162
- Setting table 162
- Air flow rate switching at discharge grille for field air flow rate switching when the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 163
- Note bold face in indicates the default setting 163
- Outdoor air processing unit field setting remote controller 163
- Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 163
- Setting of the static pressure selection for fxdq model 163
- Setting table 163
- Centralized control group no setting 164
- Brc7c type brc7e type brc4c type 165
- Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 165
- Field setting si34 704 165
- Group no setting by wireless remote controller for centralized control 1 when in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 set mode no 00 with button 3 set the group no for each group with button advance backward 4 enter the selected group numbers by pushing button 5 push button and return to the normal mode 165
- Group no setting example 165
- Test operation 165
- Contents of control modes 166
- Setting of operation control mode from remote controller local setting 166
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 167
- Factory setting 167
- How to select operation mode whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 167
- Field setting from outdoor unit 168
- List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 169 onward 168
- For setting items of 1 refer to detailed information provided on page 157 onward 169
- Caution 170
- Dip switch detail 170
- Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 170
- If the ds1 1 1 4 ds2 2 2 4 setting has not been carried out error code ua are displayed and unit can not be operated 170
- Initial conditions of dip switches 170
- Make the following settings according to models of outdoor units all models are set to off at factory 170
- Refer ds1 1 4 ds2 1 4 setting detail on next page 170
- Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 170
- Detail of ds1 1 4 ds2 1 4 setting for overseas general 171
- 7 8 7 7 7 7 173
- A setting mode 1 173
- Field setting si34 704 173
- Test operation 173
- This mode is used to set and check the following items 1 check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 setting conditions of cool heat selection individual batch master batch slave 3 low noise operating conditions in normal operation in low noise operation 4 demand operating conditions in normal operation in demand operation 173
- B setting mode 2 174
- 1 number of indoor units connected used to make setting of the number of indoor units connected to an out door unit 2 number of outdoor units connected used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 3 number of outdoor units connected used to make setting of the number of outdoor units connected to diii net that is one of the communication lines 4 number of indoor units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units 5 number of terminal units used to make setting of the number of indoor units connected to diii net that is one of the communication lines only available for vrv indoor units 178
- 7 7 7 7 7 178
- 7 7 7 7 8 178
- 7 7 7 8 7 178
- 7 7 7 8 8 178
- 7 7 8 7 7 178
- 7 7 8 7 8 178
- 7 7 8 8 7 178
- 7 7 8 8 8 178
- 7 8 7 7 7 178
- 7 8 7 7 8 178
- 7 8 7 8 7 178
- 7 8 7 8 8 178
- 7 8 8 7 7 178
- 7 8 8 7 8 178
- 7 8 8 8 7 178
- 7 8 8 8 8 178
- 8 7 7 7 7 178
- 8 7 8 7 7 178
- 8 7 8 7 8 178
- 8 7 8 8 7 178
- 8 8 7 7 8 178
- C monitor mode 178
- Si34 704 field setting 178
- Test operation 167 178
- The numbers in the no column represent the number of times to press the set bs2 button 178
- 7 7 7 7 7 179
- 7 7 7 7 8 179
- 7 7 7 7 9 179
- 7 7 7 8 7 179
- 7 7 7 9 7 179
- 7 7 8 7 7 179
- 7 7 9 7 7 179
- 7 8 7 7 7 179
- Data such as addresses and number of units is expressed as binary numbers the two ways of expressing are as follows 179
- Push the set button and match with the leds no 1 15 push the return button and confirm the data for each setting 179
- See the preceding page for a list of data etc for no 0 25 179
- Setting item 0 display contents of number of units for various settings 179
- The address for no 12 is 0101 the address for no 13 is 0110 and the combination of the two is 01010110 binary number which translates to 64 16 4 2 86 base 10 number in other words the number of terminal block is 86 179
- The address is 010110 binary number which translates to 16 4 2 22 base 10 number in other words the address is 22 179
- The no 1 cool heat unified address is expressed as a binary number consisting of the lower 6 digits 0 63 179
- The number of terminal blocks for no 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for no 12 and 13 respectively 0 128 in 179
- Setting of low noise operation and demand operation 180
- Field setting si34 704 181
- Image of operation in the case of a 181
- Image of operation in the case of a and b 181
- Image of operation in the case of b 181
- Test operation 181
- A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 182
- B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 182
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 182
- Field setting si34 704 183
- Image of operation in the case of a 183
- Image of operation in the case of a and b 183
- Image of operation in the case of b 183
- Test operation 183
- Setting of refrigerant recovery mode 186
- Check operation detail 187
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 187
- Operating procedure 187
- Press mode button bs1 once and reset setting mode 2 187
- Setting of vacuuming mode 187
- Use the vacuum pump to perform vacuuming operation 187
- With setting mode 2 while the unit stops set refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and under centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 187
- Part 6 troubleshooting 188
- Symptom based troubleshooting 79 2 troubleshooting by remote controller 82 188
- Troubleshooting by indication on the remote controller 98 188
- Troubleshooting op central remote controller 93 189
- Troubleshooting op unified on off controller 98 189
- Symptom based troubleshooting 190
- Inspection mode 193
- Local setting mode service mode 193
- Normal mode 193
- Test operation mode 193
- The following modes can be selected by using the inspection test operation button on the remote control 193
- The inspection test button 193
- Troubleshooting by remote controller 193
- Self diagnosis by wired remote controller 194
- Self diagnosis by wireless remote controller 195
- The lower digit of the code changes as shown below when the up and down buttons are pressed 196
- Operation of the remote controller s inspection test operation button 198
- Si34 704 troubleshooting by remote controller 198
- Troubleshooting 187 198
- Remote controller service mode 199
- Remote controller self diagnosis function 201
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 203
- Detail description on next page 205
- Malfunction code indication by outdoor unit pc board 205
- Push the mode bs1 button and returns to setting mode 1 205
- Push the return bs3 button and switches to the initial status of monitor mode 205
- Push the return bs3 button once to display first digit of malfunction code 205
- Push the set bs2 button and set the led display to a setting item 205
- Push the set bs2 button once to display malfunction location 205
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 205
- Push the set bs2 button once to display second digit of malfunction code 205
- Refer page 167 for monitor mode 205
- To enter the monitor mode push the mode bs1 button when in setting mode 1 205
- Troubleshooting 205
- Troubleshooting by remote controller si34 704 205
- Detail description on next page 207
- Push the mode bs1 button and returns to setting mode 1 207
- Push the return bs3 button and switches to the initial status of monitor mode 207
- Push the return bs3 button once to display first digit of malfunction code 207
- Push the set bs2 button and set the led display to a setting item 207
- Push the set bs2 button once to display malfunction location 207
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 207
- Push the set bs2 button once to display second digit of malfunction code 207
- Refer page 167 for monitor mode 207
- To enter the monitor mode push the mode bs1 button when in setting mode 1 207
- Troubleshooting 207
- Troubleshooting by remote controller si34 704 207
- Actuation of external protection device 209
- Applicable models all indoor unit models 209
- Defect of indoor unit pc board 209
- Detect open or short circuit between external input terminals in indoor unit 209
- Improper field set 209
- Indoor unit error of external protection device 209
- Malfunction decision conditions 209
- Method of malfunction detection 209
- Remote controller display 209
- Supposed causes 209
- Troubleshooting 209
- Troubleshooting by indication on the remote controller 209
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 209
- Indoor unit pc board defect 210
- Indoor unit malfunction of drain level control system s1l 211
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 212
- Si34 704 troubleshooting by indication on the remote controller 212
- Troubleshooting 212
- Troubleshooting 201 212
- Applicable models all indoor units 213
- Detection by failure of signal for detecting number of turns to come from the fan motor 213
- Disconnected or faulty wiring between fan motor and pc board 213
- Fan motor lock 213
- Indoor unit fan motor m1f lock overload 213
- Malfunction decision conditions 213
- Method of malfunction detection 213
- Remote controller display 213
- Supposed causes 213
- Troubleshooting 213
- When number of turns can t be detected even when output voltage to the fan is maximum 213
- Indoor unit malfunction of swing flap motor m1s 214
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 215
- Troubleshooting 215
- Troubleshooting by indication on the remote controller si34 704 215
- Electronic expansion valve malfunction dust clogging 216
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 217
- Troubleshooting 217
- Troubleshooting by indication on the remote controller si34 704 217
- Indoor unit malfunction of electronic expansion valve coil 218
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 219
- Troubleshooting 219
- Troubleshooting by indication on the remote controller si34 704 219
- Indoor unit drain level above limit 220
- Indoor unit malfunction of capacity determination device 221
- Applicable models all indoor unit models 222
- Defect of indoor unit pc board 222
- Defect of thermistor r2t for liquid pipe 222
- Indoor unit malfunction of thermistor r2t for heat exchanger 222
- Malfunction decision conditions 222
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 222
- Method of malfunction detection 222
- Refer to thermistor resistance temperature characteristics table on p361 222
- Remote controller display 222
- Supposed causes 222
- Troubleshooting 222
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 222
- Applicable models all indoor unit models 223
- Defect of indoor unit pc board 223
- Defect of indoor unit thermistor r3t for gas pipe 223
- Indoor unit malfunction of thermistor r3t for gas pipes 223
- Malfunction decision conditions 223
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 223
- Method of malfunction detection 223
- Refer to thermistor resistance temperature characteristics table on p361 223
- Remote controller display 223
- Supposed causes 223
- Troubleshooting 223
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 223
- Applicable models aii indoor unit models 224
- Defect of indoor unit pc board 224
- Defect of indoor unit thermistor r1t for air inlet 224
- Indoor unit malfunction of thermistor r1t for suction air 224
- Malfunction decision conditions 224
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 224
- Method of malfunction detection 224
- Refer to thermistor resistance temperature characteristics table on p361 224
- Remote controller display 224
- Supposed causes 224
- Troubleshooting 224
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 224
- Applicable models fxmq mf 225
- Defect of indoor unit pc board 225
- Defect of indoor unit thermistor r4t for discharge air 225
- Indoor unit malfunction of thermistor r4t for discharge air 225
- Malfunction decision conditions 225
- Malfunction detection is carried out by temperature detected by discharge air thermistor 225
- Method of malfunction detection 225
- Remote controller display 225
- Supposed causes 225
- Troubleshooting 225
- When the discharge air thermistor becomes disconnected or shorted while the unit is running 225
- Indoor unit malfunction of thermostat sensor in remote controller 226
- Outdoor unit pc board defect 227
- Outdoor unit actuation of high pressure switch 228
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 363 2 make measurement of voltage of the pressure sensor 229
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 229
- Troubleshooting 229
- Troubleshooting by indication on the remote controller si34 704 229
- Outdoor unit actuation of low pressure sensor 230
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 363 2 make measurement of voltage of the pressure sensor 231
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 231
- Troubleshooting 231
- Troubleshooting by indication on the remote controller si34 704 231
- Outdoor unit inverter compressor motor lock 232
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 233
- Troubleshooting 233
- Troubleshooting by indication on the remote controller si34 704 233
- Abnormal case 234
- Applicable models rxq5p 54p 234
- Closed stop value 234
- Detects the overcurrent with current sensor ct 234
- Faulty compressor 234
- Faulty current sensor a6p a7p 234
- Faulty magnetic switch 234
- Improper power voltage 234
- Malfunction decision conditions 234
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 234
- Method of malfunction detection 234
- Obstacles at the air outlet 234
- One of the possible factors may be chattering due to rough connection 234
- Outdoor unit std compressor motor overcurrent lock 234
- Remote controller display 234
- Supposed causes 234
- The current sensor value is 0 during std compressor operation 234
- The current sensor value is more than 15 a during std compressor stop 234
- Troubleshooting 234
- V unit 15 a 234
- Outdoor unit malfunction of outdoor unit fan motor 235
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 236
- Si34 704 troubleshooting by indication on the remote controller 236
- Troubleshooting 236
- Troubleshooting 225 236
- Troubleshooting 237
- Troubleshooting by indication on the remote controller si34 704 237
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 238
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 239
- Troubleshooting 239
- Troubleshooting by indication on the remote controller si34 704 239
- F3 outdoor unit abnormal discharge pipe temperature 240
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 241
- Refer to thermistor resistance temperature characteristics table on p362 241
- Troubleshooting 241
- Troubleshooting by indication on the remote controller si34 704 241
- Outdoor unit refrigerant overcharged 242
- Outdoor unit abnormal outdoor fan motor signal 243
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 244
- Si34 704 troubleshooting by indication on the remote controller 244
- Troubleshooting 244
- Troubleshooting 233 244
- Applicable models rxq5p 54p 245
- Defect of outdoor unit pc board a1p 245
- Defect of thermistor r1t for outdoor air 245
- Defective thermistor connection 245
- Malfunction decision conditions 245
- Malfunction is detected from the temperature detected by the outdoor air thermistor 245
- Method of malfunction detection 245
- Outdoor unit malfunction of thermistor r1t for outdoor air 245
- Refer to thermistor resistance temperature characteristics table on p361 245
- Remote controller display 245
- Supposed causes 245
- Troubleshooting 245
- When the outside air temperature thermistor has short circuit or open circuit 245
- Applicable models rxq5p 54p 246
- Defective compressor 246
- Faulty current sensor a6p a7p 246
- Faulty outdoor unit pc board 246
- Malfunction decision conditions 246
- Malfunction is detected according to the current value detected by current sensor 246
- Method of malfunction detection 246
- Outdoor unit current sensor malfunction 246
- Remote controller display 246
- Supposed causes 246
- Troubleshooting 246
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 246
- Outdoor unit malfunction of discharge pipe thermistor r3 r31 32t 247
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 248
- Note 5 hp class r3t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t 248
- Refer to thermistor resistance temperature characteristics table on p362 248
- Si34 704 troubleshooting by indication on the remote controller 248
- The alarm indicator is displayed when the fan is being used also 248
- Troubleshooting 248
- Troubleshooting 237 248
- Applicable models rxq5p 54p 249
- Defect of outdoor unit pc board a1p 249
- Defect of thermistor connection 249
- Defect of thermistor r2t r7t for outdoor unit suction pipe 249
- Malfunction decision conditions 249
- Malfunction is detected from the temperature detected by the suction pipe temperature thermistor 249
- Method of malfunction detection 249
- Outdoor unit malfunction of thermistor r2t r7t for suction pipe 249
- Refer to thermistor resistance temperature characteristics table on p361 249
- Remote controller display 249
- Supposed causes 249
- Troubleshooting 249
- When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 249
- Applicable models rxq5p 54p 250
- Defect of outdoor unit pc board a1p 250
- Defect of thermistor connection 250
- Defect of thermistor r4t for outdoor unit coil 250
- Malfunction decision conditions 250
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 250
- Method of malfunction detection 250
- Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 250
- Refer to thermistor resistance temperature characteristics table on p361 250
- Remote controller display 250
- Supposed causes 250
- Troubleshooting 250
- When a short circuit or an open circuit in the heat exchange thermistor is detected 250
- Outdoor unit malfunction of liquid pipe thermistor 1 r6t 251
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 252
- Refer to thermistor resistance temperature characteristics table on p361 252
- Si34 704 troubleshooting by indication on the remote controller 252
- Troubleshooting 252
- Troubleshooting 241 252
- Applicable models rxq5p 54p 253
- Faulty outdoor unit pc board 253
- Faulty subcooling heat exchanger gas pipe thermistor r5t 253
- Malfunction decision conditions 253
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 253
- Method of malfunction detection 253
- Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 253
- Refer to thermistor resistance temperature characteristics table on p361 253
- Remote controller display 253
- Supposed causes 253
- Troubleshooting 253
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 253
- Outdoor unit malfunction of high pressure sensor 254
- Refer to pressure sensor pressure voltage characteristics table on p363 255
- Voltage measurement point 255
- Outdoor unit malfunction of low pressure sensor 256
- Refer to pressure sensor pressure voltage characteristics table on p363 257
- Voltage measurement point 257
- Applicable models rxq5p 54p 258
- Current sensor failure 258
- Drive circuit failure 258
- Inverter pcb a3p 258
- Ipm failure 258
- Malfunction decision conditions 258
- Malfunction is detected based on the current value during waveform output before starting compressor malfunction is detected based on the value from current sensor during synchronous operation when starting the unit 258
- Method of malfunction detection 258
- Outdoor unit defective inverter pcb 258
- Overcurrent ocp flows during waveform output malfunction of current sensor during synchronous operation ipm failure 258
- Remote controller display 258
- Supposed causes 258
- Troubleshooting 258
- Actuation of fin thermal actuates above 93 c 259
- Applicable models rxq5p 54p 259
- Defect of fin thermistor 259
- Defect of inverter pc board 259
- Fin temperature is detected by the thermistor of the radiation fin 259
- Malfunction decision conditions 259
- Method of malfunction detection 259
- Outdoor unit malfunction of inverter radiating fin temperature rise 259
- Remote controller display 259
- Supposed causes 259
- Troubleshooting 259
- When the temperature of the inverter radiation fin increases above 93 c 259
- Inverter pcb for compressor 260
- Refer to thermistor resistance temperature characteristics table on p361 260
- Outdoor unit momentary overcurrent of inverter compressor 261
- Si34 704 troubleshooting by indication on the remote controller 262
- Troubleshooting 251 262
- Troubleshooting compressor inspection 262
- Outdoor unit momentary overcurrent of inverter compressor 263
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 264
- Si34 704 troubleshooting by indication on the remote controller 264
- Troubleshooting 253 264
- Troubleshooting output current check 264
- Outdoor unit inverter compressor starting failure 265
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 266
- Si34 704 troubleshooting by indication on the remote controller 266
- Troubleshooting 266
- Troubleshooting 255 266
- Troubleshooting 267
- Troubleshooting by indication on the remote controller si34 704 267
- Outdoor unit malfunction of transmission between inverter and control pc board 268
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 269
- Troubleshooting 269
- Troubleshooting by indication on the remote controller si34 704 269
- Si34 704 troubleshooting by indication on the remote controller 270
- Troubleshooting 270
- Troubleshooting 259 270
- Applicable models rxq5p 54p 271
- Defect of inverter pc board 271
- Defect of k2 relay in inverter pc board 271
- Defect of main circuit capacitor 271
- Imbalance in supply voltage is detected in pc board imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter consequently the increased ripple is detected 271
- Improper main circuit wiring 271
- Malfunction decision conditions 271
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button when the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes 271
- Method of malfunction detection 271
- Open phase 271
- Outdoor unit inverter over ripple protection 271
- Remote controller display 271
- Supposed causes 271
- Troubleshooting 271
- Voltage imbalance between phases 271
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 271
- Applicable models rxq5p 54p 272
- Defect of inverter pc board 272
- Defect of radiator fin temperature sensor 272
- Malfunction decision conditions 272
- Malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 272
- Method of malfunction detection 272
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 272
- Remote controller display 272
- Resistance of radiation fin thermistor is detected when the compressor is not operating 272
- Supposed causes 272
- Troubleshooting 272
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 272
- Inverter pcb for compressor 273
- Refer to thermistor resistance temperature characteristics table on p361 273
- Applicable models rxq5p 54p 274
- Faulty or no field setting after replacing main pc board 274
- Malfunction decision conditions 274
- Method of malfunction detection 274
- Mismatching of type of pc board 274
- Outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 274
- Remote controller display 274
- Supposed causes 274
- The faulty or no field setting after replacing main pc board or faulty pc board combination is detected through communications with the inverter 274
- Troubleshooting 274
- Whether or not the field setting or the type of the pc board is correct through the communication date is judged 274
- Outdoor unit gas shortage alert 275
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 276
- Si34 704 troubleshooting by indication on the remote controller 276
- Troubleshooting 276
- Troubleshooting 265 276
- Applicable models rxq5p 54p 277
- Defect of outdoor pc board a1p 277
- Malfunction decision conditions 277
- Method of malfunction detection 277
- Power supply open phase 277
- Power supply reverse phase 277
- Remote controller display 277
- Reverse phase open phase 277
- Supposed causes 277
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 277
- Troubleshooting 277
- When a significant phase difference is made between phases 277
- Outdoor unit power supply insufficient or instantaneous failure 278
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 279
- Troubleshooting 279
- Troubleshooting by indication on the remote controller si34 704 279
- Si34 704 troubleshooting by indication on the remote controller 280
- Troubleshooting 280
- Troubleshooting 269 280
- Applicable models rxq5p 54p 281
- Check operation is executed or not 281
- Check operation is not executed 281
- Malfunction decision conditions 281
- Malfunction is decided when the unit starts operation without check operation 281
- Method of malfunction detection 281
- Outdoor unit check operation not executed 281
- Remote controller display 281
- Supposed causes 281
- Troubleshooting 281
- Malfunction of transmission between indoor units 282
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 283
- Troubleshooting 283
- Troubleshooting by indication on the remote controller si34 704 283
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 284
- Si34 704 troubleshooting by indication on the remote controller 284
- Troubleshooting 284
- Troubleshooting 273 284
- Applicable models all models of indoor units 285
- Connection of two main remote controllers when using 2 remote controllers 285
- Defect of indoor unit pc board 285
- Defect of remote controller pc board 285
- In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal 285
- Indoor unit malfunction of transmission between remote controller and indoor unit 285
- Malfunction decision conditions 285
- Malfunction of indoor unit remote controller transmission 285
- Malfunction of transmission caused by noise 285
- Method of malfunction detection 285
- Normal transmission does not continue for specified period 285
- Remote controller display 285
- Supposed causes 285
- Troubleshooting 285
- Outdoor unit transmission failure across outdoor units 286
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 287
- Troubleshooting 287
- Troubleshooting by indication on the remote controller si34 704 287
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 288
- Si34 704 troubleshooting by indication on the remote controller 288
- Troubleshooting 288
- Troubleshooting 277 288
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 289
- Troubleshooting 289
- Troubleshooting by indication on the remote controller si34 704 289
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 290
- Si34 704 troubleshooting by indication on the remote controller 290
- Troubleshooting 290
- Troubleshooting 279 290
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 291
- Troubleshooting 291
- Troubleshooting by indication on the remote controller si34 704 291
- Applicable models all models of indoor units 292
- Connection between sub remote controllers 292
- Defect of remote controller pc board 292
- In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 292
- Indoor unit malfunction of transmission between main and sub remote controllers 292
- Malfunction decision conditions 292
- Malfunction of transmission between main and sub remote controller 292
- Method of malfunction detection 292
- Normal transmission does not continue for specified period 292
- Remote controller display 292
- Supposed causes 292
- Troubleshooting 292
- Indoor unit malfunction of transmission between indoor and outdoor units in the same system 293
- Improper combination of indoor and outdoor units indoor units and remote controller 294
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 295
- Troubleshooting 295
- Troubleshooting by indication on the remote controller si34 704 295
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 296
- Si34 704 troubleshooting by indication on the remote controller 296
- Troubleshooting 296
- Troubleshooting 285 296
- Address duplication of centralized controller 297
- Malfunction of transmission between centralized controller and indoor unit 298
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 299
- Troubleshooting 299
- Troubleshooting by indication on the remote controller si34 704 299
- Si34 704 troubleshooting by indication on the remote controller 300
- Troubleshooting 300
- Troubleshooting 289 300
- Applicable models all models of indoor units rxq5p 54p 301
- Defect of indoor unit pc board 301
- Failure to execute check operation 301
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 301
- Malfunction decision conditions 301
- Method of malfunction detection 301
- Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 301
- On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature 301
- Remote controller display 301
- Stop valve is left in closed 301
- Supposed causes 301
- System is not set yet 301
- The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 301
- Troubleshooting 301
- Malfunction of system refrigerant system address undefined 302
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 303
- Troubleshooting 303
- Troubleshooting by indication on the remote controller si34 704 303
- Pc board defect 304
- Troubleshooting op central remote controller 304
- Applicable models central remote controller intelligent touch controller schedule timer 305
- Defect of pc board of optional controllers for centralized control 305
- Detect the malfunction according to diii net transmission data the system will be automatically reset 305
- Malfunction decision conditions 305
- Malfunction of transmission between optional controllers for centralized control 305
- Method of malfunction detection 305
- Remote controller display 305
- Supposed causes 305
- Troubleshooting 305
- When no master controller is present at the time of the startup of slave controller when the centralized controller which was connected once shows no response 305
- Improper combination of optional controllers for centralized control 306
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 307
- Troubleshooting 307
- Troubleshooting op central remote controller si34 704 307
- Address duplication improper setting 308
- Address duplication of centralized controller 308
- Applicable models central remote controller intelligent touch controller schedule timer 308
- Detect the malfunction according to diii net transmission data 308
- Malfunction decision conditions 308
- Method of malfunction detection 308
- Remote controller display 308
- Supposed causes 308
- Troubleshooting 308
- Two or more units of central remote controllers and intelligent touch controllers are connected and all of them are set to master unit central setting or slave unit central setting 308
- Two units of schedule timers are connected 308
- Operation lamp blinks 309
- Troubleshooting op unified on off controller 309
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 310
- Si34 704 troubleshooting op unified on off controller 310
- Troubleshooting 310
- Troubleshooting 299 310
- Display under centralized control blinks repeats single blink 311
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 312
- Si34 704 troubleshooting op unified on off controller 312
- Troubleshooting 312
- Troubleshooting 301 312
- Troubleshooting 313
- Troubleshooting op unified on off controller si34 704 313
- Applicable models unified on off controller 314
- Central control address group no is not set for indoor unit 314
- Detect the malfunction according to diii net transmission data 314
- Display under centralized control blinks repeats double blink 314
- Improper control range setting switch 314
- Improper wiring of transmission wiring 314
- Malfunction decision conditions 314
- Method of malfunction detection 314
- Remote controller display 314
- Si34 704 troubleshooting op unified on off controller 314
- Supposed causes 314
- Troubleshooting 314
- Troubleshooting 303 314
- Under centralized control repeats double blink 314
- When no central control addresses are set to indoor units when no indoor units are connected within the control range 314
- Check 1 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 315
- Check 2 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected furthermore to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd 315
- Troubleshooting 315
- Troubleshooting op unified on off controller si34 704 315
- Check 3 check the factors of overheat operation identify the defective points referring to the failure factor analysis fta as follows 316
- Si34 704 troubleshooting op unified on off controller 316
- Troubleshooting 305 316
- Check 4 power transistor check 317
- Pcb and circuit diagram 317
- Point of measurement and judgment criteria 317
- Preparation 317
- Troubleshooting 317
- Troubleshooting op unified on off controller si34 704 317
- U v w n3 317
- Check 5 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 318
- Si34 704 troubleshooting op unified on off controller 318
- Troubleshooting 307 318
- Check 6 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 319
- Troubleshooting 319
- Troubleshooting op unified on off controller si34 704 319
- 1 unit 1 unit 1 provided not provided 321
- 1 unit not provided 321
- 1 unit provided 321
- Central equipment connection pattern setting of master unit central setting connector 2 321
- Check 8 master unit central connector setting table the master unit central setting connector cn1 x1a is mounted at the factory to independently use a single unit of the intelligent touch controller or a single unit of the central remote controller do not dismount the master unit central setting connector i e use the connector with the factory setting unchanged to independently use the schedule timer insert an independent use setting connector no independent use setting connector has been mounted at the factory insert the connector which is attached to the casing of the main unit in the pc board cn1 x1a independent use connector master unit central setting connector to use two or more central equipment in combination make settings according to the table shown below 321
- Intelligent touch controller 321
- Pattern 321
- Troubleshooting 321
- Troubleshooting op unified on off controller si34 704 321
- Unit not provided 321
- Check 9 master slave unit setting table combination of intelligent touch controller and central remote controller 322
- Si34 704 troubleshooting op unified on off controller 322
- Troubleshooting 311 322
- Example of connection r 410a type 59 7 thermistor resistance temperature characteristics 61 8 pressure sensor 63 9 method of checking the inverter s power transistors and diode modules 64 324
- List of electrical and functional parts 44 324
- Option list 52 324
- Part 7 appendix 324
- Piping diagrams 14 324
- Piping installation point 56 324
- Wiring diagrams for reference 21 324
- Outdoor unit 325
- Piping diagrams 325
- Rxq5py1 325
- Rxq8py1 326
- Rxq10py1 rxq12py1 327
- Rxq14py1 rxq16py1 rxq18py1 328
- Electronic expansion valve filter filter 329
- Flare connectio 329
- Flare connection 329
- Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 329
- Gas piping connection port 329
- Heat exchanger 329
- Indoor unit 329
- Liquid piping connection port 329
- Φ 15 or less attached piping above φ 19 329
- Fxmq125mf 200mf 250mfv1 330
- Refrigerant pipe connection port diameters 330
- Connection unit 331
- Fxuq bevq 331
- Indoor unit 331
- Outdoor unit 332
- Rxq5py1 332
- Wiring diagrams for reference 332
- Rxq8py1 333
- Rxq10py1 334
- Rxq12py1 335
- Rxq14py1 rxq16py1 rxq18py1 336
- Field wiring 337
- Rxq5p 8p 10p 12p 14p 16p 18py1 337
- Rxq20p 22p 24p 26p 28p 30p 32p 34p 36py1 338
- Rxq38p 40p 42p 44p 46p 48p 50p 52p 54py1 339
- Fxcq20m 25m 32m 63mve 340
- Indoor unit 340
- Fxcq40m 50m 80m 125mve 341
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 342
- Fxkq25ma 32ma 40ma 63mave 343
- Fxdq20p 25p 32p fxdq20na 25na 32na 40na 50na 63nave with drain pump 344
- Fxdq20p 25p 32p fxdq20n 25n 32n 40n 50n 63nvet without drain pump 345
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 346
- Fxmq40ma 50ma 63ma 80ma 100ma 125mave 347
- Fxmq200ma 250mave 348
- Fxhq32ma 63ma 100mave 349
- Fxaq20ma 25ma 32mave 40ma 50ma 63mave 350
- Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 351
- Fxuq71ma 100ma 125mav1 352
- Fxmq125mf 200mf 250mfv1 353
- Bevq71ma 100ma 125mave 354
- Appendix 355
- List of electrical and functional parts 355
- List of electrical and functional parts si34 704 355
- Outdoor unit 355
- Rxq5py1 8py1 355
- Rxq10py1 18py1 356
- Appendix 357
- C off 87 c on 357
- Indoor side 357
- Indoor unit 357
- List of electrical and functional parts si34 704 357
- Appendix 347 358
- Only for fxdq20 63n a ve fxdq20 32pve with drain pump type 358
- Si34 704 list of electrical and functional parts 358
- Appendix 359
- List of electrical and functional parts si34 704 359
- Appendix 349 360
- K ω 25 c 360
- Si34 704 list of electrical and functional parts 360
- St8602a 6 φ 6 360
- St8605 6 φ 8 360
- Μ f 400v 360
- Appendix 361
- List of electrical and functional parts si34 704 361
- Appendix 351 362
- Si34 704 list of electrical and functional parts 362
- Thermal protector 130 c off 83 c on 362
- 2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 up to 2 installation boxes can be installed for each indoor unit 5 installation box no 8 is necessary for second adaptor 6 installation box no 8 is necessary for each adaptor 7 this adaptor is required when connecting with optional controller for centralized control 8 brc2a51 is also available various pc boards 363
- Adaptor must be procured on site 363
- Appendix 363
- Note 1 installation box no is necessary for each adaptor marked 363
- Note installation box for 363
- Operation control system optional accessories 363
- Option list 363
- Option list of controllers 363
- Option list si34 704 363
- System configuration 363
- Appendix 353 364
- Building management system 364
- Is a registered trade mark of echelon corporation 364
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 364
- P p d does not support connection unit series 364
- Please refer to option handbook etc for detail 364
- Si34 704 option list 364
- Appendix 365
- Option list si34 704 365
- Option lists outdoor unit 365
- Order products 365
- Rxq20 36py1 365
- Rxq38 54py1 365
- Rxq5 18py1 365
- Appendix 355 366
- Order products 366
- Rxq16 18phy1 366
- Rxq24 30phy1 366
- Rxq32 50phy1 366
- Si34 704 option list 366
- In the case of 2m or less 367
- In the case of 2m or more 367
- Piping installation point 367
- Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 367
- The projection part between multi connection piping kits 367
- When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 367
- The example of a wrong pattern 368
- Appendix 359 370
- Example of connection 370
- Example of connection r 410a type 370
- Example refrigerant branch using refnet header 370
- Example refrigerant branch using refnet joint 370
- How to calculate the additional refrigerant to be charged 370
- Pipe size selection 370
- Refrigerant branch kit selection 370
- Si34 704 example of connection r 410a type 370
- A b 2 c 2 d 2 e 2 f 2 g 2 371
- Diameter of above case 371
- Gas liquid 371
- H i j k l m n p 1000 m 371
- Indoor units 1 8 371
- Note 1 371
- Note 2 371
- Note 3 371
- Outdoor unit refnet joint a g 371
- Φ 25 φ 12 371
- Φ 31 φ 15 371
- Φ 31 φ 19 371
- Φ 38 φ 22 371
- Appendix 361 372
- Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 372
- Outdoor unit for fin thermistor r1t 372
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 372
- Si34 704 thermistor resistance temperature characteristics 372
- Thermistor resistance temperature characteristics 372
- Appendix 373
- Outdoor unit thermistors for discharge pipe r3t r3 373
- Thermistor resistance temperature characteristics si34 704 373
- Pressure sensor 374
- Method of checking the inverter s power transistors and diode modules 375
- Diode module checking 376
- Power module checking 376
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 376
- When using the digital type of multiple tester make measurement in diode check mode 376
- Part 8 378
- Part 8 precautions for new refrigerant r 410a 378
- Precautions for new refrigerant r 410a 378
- Precautions for new refrigerant r 410a 68 378
- About refrigerant r 410a 379
- Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 379
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 379
- Outline 379
- Precautions for new refrigerant r 410a 379
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 379
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 379
- Precautions for new refrigerant r 410a 369 380
- Si34 704 precautions for new refrigerant r 410a 380
- Thermodynamic characteristic of r 410a 380
- Refrigerant cylinders 381
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 382
- Copper tube material and thickness 382
- O soft annealed h hard drawn 382
- R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 382
- Service tools 382
- Tool compatibility 382
- Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 383
- Differences 2 change of dimension a 383
- Flaring tool 383
- Specifications 2 dimension a 383
- Unit mm 383
- Can not be used 386
- Drawings flow charts 392
- Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 394
- Cautions on product corrosion 394
- Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 394
- Http www daikin com global_ac 394
- If you have any enquiries please contact your local importer distributor and or retailer 394
- Printed in japan 03 2007 ak 394
- Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 394
- Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 394
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