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Daikin RZQS100B7V3B [192/344] Troubleshooting
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SiBE27-702 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 179
Troubleshooting
Check the connector
connection.
Replace outdoor
unit PC board.
Is it connected
properly?
Is it normal?
Is the
contact OK?
Check the thermistor
resistance.
Check the contact between
thermistor and PC board.
NO
NO
NO
YES
YES
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Correct the
connection.
Replace the
thermistor.
Correct contact.
C4: Indoor liquid pipe thermistor (R2T).
C9: Air suction thermistor (R1T).
Содержание
- R 410a heat pump 50hz 1
- Skyair 1
- Combination 2
- External appearance 3 model name and power supply 2
- General functionality 7 2
- Introduction vii 2
- Method of operating remote controller 0 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 remote controller 3 2
- Part 4 functional description 5 2
- Skyair heat pump r 410a gqi ii b c series 50hz 2
- Skyair inverter gqi ii series 2
- Specifications 0 2
- Table of contents 2
- Wired remote controller 4 2
- Wireless remote controller 8 2
- Expansion valve regulating functions 7 3
- Field settings 7 3
- Frequency regulating functions 1 3
- Indoor unit functional concept 1 3
- Outdoor unit fan speed control 0 3
- Outdoor unit functional concept 9 3
- Part 5 test operation 1 3
- Test operation 2 3
- How to handle request for maintenance 31 4
- Part 6 troubleshooting 29 4
- Procedure of self diagnosis by remote controller 52 4
- Test run and operation data 25 4
- Troubleshooting based on equipment condition 32 4
- Troubleshooting by led indications 60 4
- Troubleshooting by remote controller display led display 62 4
- Dimensions 56 5
- Installation and service space rzq100 140c7 rzqs125 140c7 rzq100 140b8 59 5
- Part 7 appendix 55 5
- Part 8 removal procedure 91 6
- Part 9 precautions for new refrigerant r 410a 15 6
- Pcb layout 85 6
- Piping diagrams 61 6
- Precautions for new refrigerant r 410a 16 6
- Rzq100 140c7 rzqs125 140c7v1b 06 6
- Rzq71b9 rzqs71 100b7v3b rzq100 140b8w1b 92 6
- Switch box layout 82 6
- Wiring diagrams 79 6
- Drawings flow charts v 7
- Index i 7
- Caution in repair 8
- Introduction 8
- Safety cautions 8
- Warning 8
- Caution 9
- Cautions regarding products after repair 9
- Warning 9
- Caution 10
- Inspection after repair 10
- Warning 10
- Caution 11
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 11
- Using icons 11
- Using icons list 11
- Preface 12
- Skyair inverter gqi ii series 14
- Combination 16
- External appearance 3 model name and power supply 16
- Part 1 general information 16
- Combination 17
- Combination overview 17
- Notes explanation of connection p 4 p pair 2 twin 3 triple 4 double twin 17
- The table below contains the possible combinations between indoor units and outdoor units of the sky air rzq s series 17
- Combination matrix 18
- Notes 1 possible indoor types fcqh71 fcq35 71 ffq35 60 fhq35 71 fbq35 71 fuq71 faq71 2 individual indoor capacities are not given because the combinations are for simultaneous operation indoor units installed in same room 3 when different indoor models are used in combination designate the remote controller that is equipped with the most functions as the main unit in note 1 are the indoor units mentioned in order of the possible function most functions are on fcq less functions are on faq 4 between brackets are the required refnet kits mentioned that are necessary to install the combination 18
- External appearance 19
- Indoor units 19
- Outdoor units 19
- Remote controller 19
- Model name and power supply 20
- Part 2 specifications 22
- Specifications 0 22
- Rzq71b9 100c7 125c7 and 140c7 single phase 23
- Specifications 23
- Technical specifications 23
- The table below contains the technical specifications 23
- Sibe27 702 specifications 24
- Specifications 11 24
- Electrical data 25
- Electrical specifications 25
- Specifications 25
- Specifications sibe27 702 25
- The table below contains the electrical specifications 25
- Sibe27 702 specifications 26
- Specifications 13 26
- Symbols 26
- Rzqs71b7 100b7 125c7 and 140c7 single phase 27
- Specifications 27
- Specifications sibe27 702 27
- Technical specifications 27
- The table below contains the technical specifications 27
- Sibe27 702 specifications 28
- Specifications 15 28
- Electrical data 29
- Electrical specifications 29
- Specifications 29
- Specifications sibe27 702 29
- The table below contains the electrical specifications 29
- Sibe27 702 specifications 30
- Specifications 17 30
- Symbols 30
- Rzq100b8 125b8 and 140b8 three phase 31
- Specifications 31
- Specifications sibe27 702 31
- Technical specifications 31
- The table below contains the technical specifications 31
- Sibe27 702 specifications 32
- Specifications 19 32
- Electrical data 33
- Electrical specifications 33
- Specifications 33
- Specifications sibe27 702 33
- The table below contains the electrical specifications 33
- Sibe27 702 specifications 34
- Specifications 21 34
- Symbols 34
- Method of operating remote controller 0 36
- Part 3 remote controller 36
- Wired remote controller 4 36
- Wireless remote controller 8 36
- Brc1d52 type 37
- External control icon this icon indicates that another controller with higher priority is controlling or disabling your installation 9 change over under centralised control icon this icon indicates that the change over of the installation is under centralised control assigned to another indoor unit or optional cool heat selector connected to the outdoor unit master remote controller 10 day of the week indicator the day of the week indicator shows the current week day or the set day when reading or programming the schedule timer 11 clock display the clock display indicates the current time or the action time when reading or programming the schedule timer 37
- Features 37
- On leave home is enabled flashing leave home is active off leave home is disabled 37
- On off button press the on off button to start or stop the system 2 operation lamp the operation lamp lights up during operation or blinks if a malfunction occurs 3 operation mode icon these icons indicate the current operation mode fan dry automatic cooling heating 4 ventilation mode icon these icons indicate the current ventilation mode hrv only automatic heat exchange bypass 5 ventilation icon the ventilation icon appears when the ventilation is adjusted with the ventilation amount button hrv only simultaneously the ventilation amount is indicated by the fan speed icon 6 air cleaning icon this icon indicates that the air cleaning unit option is operational 7 leave home icon the leave home icon shows the status of the leave home function 37
- Remote controller 37
- Wired remote controller 37
- Wired remote controller sibe27 702 37
- Installation 39
- Down up 41
- Explanation of receiver 41
- Features 41
- Names and function 41
- On off 41
- Wireless remote controller 41
- Field setting mode service mode 43
- Inspection mode 43
- Method of operating remote controller 43
- Normal mode 43
- Test operation mode 43
- The following modes can be selected by using the inspection test operation button on the remote control 43
- The inspection test button 43
- Enter the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 2 enter the service mode after having entered the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 3 select the mode no set the desired mode no with the up down temperature setting button 4 select the unit no select the indoor unit no set with the time mode start stop button 5 select the necessary settings for each mode modes 40 or 41 6 select the desired malfunction hysteresis of sensor data display with or button in case of wireless remote controller use or button each data displays refer below display 7 return to the normal operation mode press the inspection test operation button one time 44
- Maintenance mode setting 44
- Procedure 44
- Service data confirmation 44
- Enter the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 2 enter the maintenance mode after having entered the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 3 select the mode no mode 43 44 or 45 set the desired mode no with the up down temperature setting button 4 select the unit no select the indoor unit no set with the time mode start stop button 5 carry out the necessary settings for each mode mode 43 only possible for wireless remote controller in case of mode 43 press timer on off button to decide the forced fan on in case of mode 44 set 45
- Procedure 45
- Select the changed unit no with or button then press timer on off button to decide 6 return to the normal operation mode tap the inspection test operation button one time 45
- Service mode setting 45
- Operation of the remote controller s inspection test operation button 46
- Remote controller 33 46
- Sibe27 702 method of operating remote controller 46
- Remote controller service mode 47
- Frequency regulating functions 1 48
- General functionality 7 48
- Indoor unit functional concept 1 48
- Outdoor unit functional concept 9 48
- Part 4 functional description 48
- Expansion valve regulating functions 7 49
- Outdoor unit fan speed control 0 49
- Functions of thermistors 50
- General functionality 50
- Locating the thermistors 50
- Rzq100 140c7 rzqs125 140c7v1b single phase 50
- Rzq71b9 rzqs71 100b7v3b single phase 50
- Functions of the thermistors 51
- Note sensor r3t on indoor coil of fcq35 60 ffq35 60 fbq35 60 fhq35 60 is not used when the indoor units are connected to rzq outdoor units 51
- Rzq100 140b8w1b three phase 51
- Both the indoor and outdoor unit must be set to emergency while the power is off 52
- Emergency operation below table explains what will happen when the switch is set to emergency 52
- Ending conditions you can end the emergency operation by changing the emergency switch back to normal while the power is off 52
- Forced operating mode emergency operation 52
- How to set emergency operation 52
- Purpose the table below describes the purpose of the forced operating mode 52
- Starting conditions you can operate the system manually by changing the emergency switch on the indoor and outdoor pc board from normal to emergency when the system is operating in emergency it can not control the room temperature 52
- To set emergency operation proceed as follows 52
- Active components 53
- Additional info 53
- Be sure to set the emergency switch on both the outdoor and indoor unit 53
- Change the position of the emergency switch only when the power is turned off 53
- During emergency operation do not attempt to operate the equipment from the remote controller the remote controller shows 88 while the emergency operation is active on the indoor unit 53
- Emergency operation can not be carried out when the pc board itself is defective 53
- If a safety device is activated during emergency all actuators are turned off 53
- In cooling the unit runs for 20min and then stops for 10min in order to avoid freeze up of the indoor coil 53
- In heating defrost is activated for 3 minutes once every hour 53
- The unit will not regulate the temperature during emergency operation 53
- Operating modes the possible operating modes are 54
- Outdoor unit identification function 54
- Purpose the purpose of the outdoor unit identification function is to enable the indoor unit to automatically determine which operating mode has to be set in function of the type of connected outdoor unit c o or h p 54
- Tc transmission circuit rc receiving circuit 54
- Used input the outdoor unit identification function uses the following inputs 54
- Simulated operation function 55
- Restart standby 56
- Rzq100 140c7 rzqs125 140c7 1 phase 56
- Rzq71b9 rzqs71 100b7 1 phase 56
- To prevent compressor from frequent on off and equalize pressure in refrigerant line conducts forced thermostat off for 3 minutes after compressor stopping moreover outdoor unit fan conducts residual operation for a period of time to expedite equalization and prevent refrigerant from entering in evaporator 56
- Functional description 57
- General functionality sibe27 702 57
- Rzq100 140b8 3 phase 57
- Automatic restart 58
- A b c d e f 59
- Applicable the remote control thermostat is only available in wired remote controls 59
- Condition the remote controller thermostat is not used when 1 the remote controller thermostat malfunctions 59
- Conditions the table below contains the condition in which the remote control thermostat is not used 59
- Cooling the diagram below shows the operation range of the set temperature air suction temperature combination in cooling operation 59
- Functional description 59
- General functionality sibe27 702 59
- Group control is used 3 the set temperature air suction temperature combination is out of range see below graph 59
- Method the remote control sensor is standard disabled for sky air units the use of the remote control sensor can be enabled by changing field setting 10 20 2 02 to 10 20 2 01 59
- Using conditions for remote controller thermostat 59
- A b c d 60
- Functional description 47 60
- Heating the diagram below shows the operation range of the set temperature air suction temperature combination in heating operation 60
- Sibe27 702 general functionality 60
- When heating the hot air rises to the top of the room resulting in the temperature being lower near the floor where the occupants are when controlling by body thermostat sensor only the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature the temperature can be controlled so the lower part of the room where the occupants are doesn t become cold by widening the range in which thermostat sensor in remote controller can be used so that suction temperature is higher than the preset temperature 60
- Forced thermostat off 61
- Test run control 62
- Method the table below describes the 4 way valve control operation 63
- Purpose the purpose of the 4 way valve control is to control how the superheated refrigerant passes through the 4 way valve the 4 way valve control carries out the changeover switching of the 4 way valve this changeover switching is only carried out during operation because a certain pressure difference is required to move the internal cylinder 63
- Time chart the time chart below illustrates the 4 way valve control 63
- Way valve control 63
- Ending condition 64
- Low pressure value is calculated in case of rzqs100b7v3b 1 phase rzq100 140b8w1b 3 phase 64
- Outline the unit will conduct a pump down residual operation after each compressor stop command 64
- Parameters 64
- Pump down residual operation 64
- Purpose of this function is to collect the refrigerant in the liquid receiver and outdoor heat exchanger in order to prevent liquid refrigerant from remaining in the indoor heat exchanger 64
- Rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 64
- Be sure to open the stop valves after the pipe work has been finished be sure not to operate the unit with closed stop valves or the compressor may brake down 65
- Cautions 65
- Outline whenever the units need to be moved or removed perform a pump down operation before disconnecting the field piping by performing a pump down operation all of the refrigerant will be collected in the outdoor unit 65
- Pressing the pump down switch bs1 on the outdoor pcb may cause the outdoor and indoor fan to start operating automatically 65
- Procedure 65
- Pump down operation 65
- Defrost operation 66
- Defrost starting conditions defrost will start when the following conditions have been realized 66
- Defrost upper limit time a is met low pressure saturated temperature te is within the defrost requesting area rzq71b9 rzqs71 100b7v3b only outdoor unit heat exchanger area temperature tb is within the defrost requesting area 66
- Functional description 53 66
- Integrated compressor running time is 25 minutes or more since the completion of the previous defrost operation 66
- Outline when the unit is operating in heating mode a defrost operation will be conducted in order to avoid ice formation on the outdoor unit heat exchanger 66
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 66
- Rzq71b9 rzqs71 100b7v3b 1 phase 66
- Sibe27 702 general functionality 66
- Areas defrost upper limit a 67
- Rzq100 140b8w1b 3 phase 67
- A hz 162 hz 155hz 155 hz b hz 122 hz 155 hz 155 hz c hz 48 hz 72 hz 72 hz a pls 300 pulses 250 pulses 250 pulses 68
- Defrost control 68
- Functional description 55 68
- Phase 3 phase rzq71b9 rzqs71b7v1b rzqs100b7v1b rzq100 140b8w1b 68
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 68
- Rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 68
- Sibe27 702 general functionality 68
- Defrost ending conditions defrosting ends when the following conditions have been realized note that defrosting can be operated for 10 minutes at longest 69
- Rzq100 140b8w1b 3 phase 69
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 69
- Rzq71b9 rzqs71 100b7v3b 1 phase 69
- C for 10 minutes continuous 70
- Freeze prevention function 70
- Freeze prevention start conditions 70
- Freeze prevention start decided by the indoor unit factory setting 70
- Freeze prevention stop conditions 70
- Freeze prevention stop decided by the indoor unit factory setting 70
- Parameters 70
- Purpose in order to avoid formation of ice on the indoor unit heat exchanger in cooling and dry mode the system automatically starts up a freeze prevention cycle when a number of specific conditions are fulfilled 70
- Reference please refer to outdoor field settings in part 5 test operation for details on possible use of edp room settings in case of low latent heat applications refer to p107 70
- Pmv control 71
- Outline after the compressor has been turned off the preheating operation will be activated in order to avoid refrigerant from dissolving in the compressor oil 72
- Preheating operation control 72
- Rzq71b9 rzqs71 100b7v3b 1 phase 72
- Trigger conditions 72
- Crankcase heater control 73
- According to a difference between the temperature set by the remote controller and the actually detected room temperature 1 the thermostat is turned on or off 74
- In dry operation 74
- In heating 74
- In normal operation in cooling 74
- Indoor unit functional concept 74
- Note 1 the thermistor to detect room temperature is as follows according to field setting a factory setting indoor unit suction air thermistor b when set to remote controller thermistor indoor air thermistor in the remote controller 2 explanation of each symbol 74
- T detected room temperature temperature set by remote controller tro room temperature detected when dry operation is started tr room temperature detected by thermistor 74
- Thermostat control 74
- 1 when changing over from on to off the residual operation is done for 5 minutes 75
- Cooling operation dry operation 75
- Drain pump control 75
- Excluding fcq 75
- Fcq normally drain pump on thermostat on off 75
- Functional description 75
- Heating operation 75
- Humidifier interlock equipped 75
- Humidifier interlock not equipped 75
- Indoor unit functional concept sibe27 702 75
- When the following condition consists by mounting the adaptor for wiring pc board and the humidifier the drain pump is turned on 75
- Condensation avoidance control 76
- Defrosting the time chart below illustrates the draft avoidance control 1 in defrosting 77
- Draft avoidance control 1 77
- Functional description 77
- Heating thermostat off the time chart below illustrates the draft avoidance control 1 in heating thermostat off 77
- Indoor unit functional concept sibe27 702 77
- Input connection on indoor pcb connection on outdoor pcb limit switch for flap 33s no of fan turns x26a outdoor heat exchanger thermistor defrost control r2t 77
- Purpose avoid draft for the customer by delaying transfer of the flap to the po0 horizontal position for a certain amount of time when defrosting and in heating thermostat off 77
- Used inputs the draft avoidance control 1 uses the following inputs 77
- Cold air prevention control is finished 78
- Draft avoidance control 2 78
- Hot start is finished or 78
- Purpose the purpose of the draft avoidance control 2 is to avoid draft when the flap is moving 78
- Starting conditions the draft avoidance control 2 is activated when 78
- Time chart if the fan speed is set to h the fan turns at low speed for a certain amount of time 78
- Used input draft avoidance control 2 uses the following inputs 78
- Cooling operation the table below contains the fan and flap operations 79
- Fan and flap operation 79
- Heating operation the table below contains the fan and flap operations 79
- Ll operation on cassette type units 79
- Before compressor startup 80
- During compressor stop 80
- Indoor fan control at compressor startup 80
- Indoor fan control before compressor startup 80
- Indoor fan control during compressor stop 80
- Indoor unit fan control 80
- Outline during compressor start and stop control the indoor fan will receive instruction from the outdoor unit in order to protect the compressor from receiving liquid and to assure a smooth compressor start up 80
- At compressor startup 81
- In heating hot startup control when performing a startup or after the defrosting cycle has been completed the indoor fan will be controlled as to prevent cold air draft and secure the starting performance quick pressure build up 81
- 1 only for trank shaped rzq100 140c7 rzqs125 140c7v1b 1 phase and rzq100 140b8w1b 3 phase 2 only for b series rzq71b9 rzqs71 100b7v3b 1 phase and rzq100 140b8w1b 3 phase 82
- Flow chart cooling dry operation 82
- Function outline in cooling mode 82
- Functional description 69 82
- Outdoor unit functional concept 82
- Sibe27 702 outdoor unit functional concept 82
- 1 only for trank shaped rzq100 140c7 rzqs125 140c7v1b 1 phase and rzq100 140b8w1b 3 phase 2 only for b series rzq71b9 rzqs71 100b7v3b 1 phase and rzq100 140b8w1b 3 phase 83
- Flow chart heating operation 83
- Function outline in heating mode 83
- Functional description 83
- Outdoor unit functional concept sibe27 702 83
- During compressor start up a pressure difference will be build up in order to have sufficient pressure difference for the 4 way valve to change over 84
- Frequency regulating functions 84
- General the normal starting control time is 2 3 minutes the maximum starting frequency control time is limited to 10 minutes 84
- Outline the inverter compressor will start up with a limited fixed frequency value for a specified period of time in order to prevent liquid back to the compressor and to limit the starting current 84
- Starting frequency control 84
- Frequency regulating functions sibe27 702 85
- Functional description 85
- Rzq100 140c7 rzqs125 140 1 phase 85
- Rzq71b9 rzqs71 100 1 phase rzq100 140 3 phase 85
- Starting control 85
- Starting control when compressor start up the starting frequency is fixed for specified period of time at low frequency to prevent returning of refrigerant 85
- General frequency control 86
- Frequency steps the operating frequency for the sky air rzq s inverter units will be a value chosen from a list with fixed frequency settings that is programmed in the unit s memory 87
- Maximum frequency in cooling 87
- Functional description 75 88
- In order to prevent abnormal low pressures in the system the below control function will be activated low pressure is detected by the low pressure sensor 88
- Low pressure protection control 88
- Rzq71b9 rzqs71 100b7v3b 1 phase 88
- Sibe27 702 frequency regulating functions 88
- Frequency regulating functions sibe27 702 89
- Functional description 89
- Rzq100 140b8w1b 3 phase 89
- Rzq100 140c7v1b 1 phase 89
- When cooling operation when heating operation 89
- As the bearing resistance limit pressure decreases during slow operation of the compressor the lower limit of frequency is restricted 90
- Details the high pressure value will be calculated from the low pressure power input and compressor frequency in case of rzq100 140c7 b8 rzqs125 140c7 low pressure is a calculated value 90
- Flow chart 90
- High pressure protection control 90
- Hps closes at 30 bar tolerance 0 5 90
- Hps opens at 40 bar tolerance 0 0 5 90
- Outline in order to prevent abnormal high pressures in the system and hence avoiding activation of the high pressure safety device the below control function will be activated 90
- Parameters 90
- Discharge pipe temperature control 91
- Flow chart 91
- Outline the compressor operating frequency will be controlled in order to avoid abnormal high compressor temperatures see also expansion valve control 91
- Parameters 91
- Td discharge pipe temperature 91
- Flow chart 92
- Functional description 79 92
- Lowering upper limit frequency for 1 step every 20 seconds 92
- Normal operation 92
- Outline in case the suction superheat value in heating mode is too high the oil return to the compressor will be insufficient in order to avoid that the compressor oil will be accumulated in the outdoor unit heat exchanger the upper limit frequency will be decreased 92
- Raising upper limit frequency for 1 step every 20 seconds 92
- Sibe27 702 frequency regulating functions 92
- Suction pipe superheat protection control heating mode 92
- Control by inverter fin temperature 93
- Inverter current protection control 93
- Restricts compressor operation frequency to prevent compressor from tripping due to inverter overcurrent 93
- Restricts compressor operation upper limit frequency to prevent compressor from tripping due to inverter fin temperature 93
- Monitors the overall current and restricts the upper limit compressor operating frequency to prevent circuit breakers from exceeding the rated capacity 94
- Protection control by overall current 94
- Upper limit current a takes the following values depending on the outside temperature also varies depending on model 94
- By lowering the compressor frequency the current drawn by the compressor will be reduced and as a result the temperature inside the switch box will drop 95
- Flow chart 95
- Inverter cooling fin temperature control 95
- Outline this control will restrict the compressor upper limit frequency in order to protect the electronic components in the switch box from overheating l4 error activation 95
- Parameters 95
- B series rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 96
- Cooling in cooling low ambient conditions the outdoor fan speed and compressor frequency will be adapted to secure the differential pressure between high and low pressure 96
- Fan control in cooling 96
- Functional description 83 96
- Outline to ensure the compression ratio pressure difference between high and low pressure at low outdoor temperature conditions in cooling mode and high outdoor temperature conditions in heating mode the outdoor fan and target compressor frequency may be varied 96
- Parameters 96
- Phase 3 phase rzq s 71 rzqs100 rzq100 140b7w1b t c 79 c 71 c 68 c 96
- Pressure difference control 96
- Sibe27 702 frequency regulating functions 96
- C series rzq100 140c7 rzqs125 140c7v1b 1 phase 97
- Frequency regulating functions sibe27 702 97
- Functional description 97
- Frequency restriction in cooling 98
- Functional description 85 98
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 98
- Rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 98
- Sibe27 702 frequency regulating functions 98
- Details during the oil recovery operation the operation frequency of the compressor will be increased for a time period of 5 minutes oil recovery operation is only executed in cooling mode in heating mode oil return to the compressor is guaranteed by the defrost operation 99
- Frequency regulating functions sibe27 702 99
- Functional description 99
- Heating high outdoor ambient overload conditions 99
- In heating overload conditions the outdoor fan speed will be adapted to secure the differential pressure between high and low pressure 99
- Oil recovery operation 99
- Only the fan speed will be adapted in heating overload conditions no adjustments to the compressor frequency will be made 99
- Outline when the compressor operates for a certain period of time at low frequency the oil level in the compressor may become low due to incomplete oil return to prevent damage to the compressor and in worst case avoid compressor lock an oil recovery operation will be conducted 99
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 99
- Rzq71b9 rzq71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 99
- Expansion valve control at startup 100
- Expansion valve regulating functions 100
- General expansion valve control 101
- Details 102
- Discharge pipe temperature protection control 102
- Functional description 89 102
- Outline the expansion valve opening will be controlled in order to avoid abnormal high compressor discharge temperatures see also compressor operating frequency control 102
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 102
- Rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 102
- Sibe27 702 expansion valve regulating functions 102
- Fan speed control the outdoor fan speed will be controlled in function of the actual outdoor ambient temperature the condensation pressure pressure difference between low and high pressure and compression ratio 103
- Fan step table 103
- Fan step table rzq100 140c7 103
- Fan step table rzq71b9 103
- For details please refer to pressure difference control 103
- Note refer to pressure difference control on p83 refer to defrost operation on p53 103
- Outdoor unit fan speed control 103
- Rzqs71 100b7v3b 103
- Field settings 7 104
- Part 5 test operation 104
- Test operation 2 104
- Test run and operation data 25 104
- Before carrying out a test run proceed as follows 105
- Check that the temperature setting of the remote controller is at the lowest level in cooling mode or use test mode 105
- Checks before test run 105
- Go through the following checklist 105
- Test operation 105
- Test run checks 105
- To carry out a test run check the following 105
- Introduction to set the wireless remote controller you have to set the address for 106
- S m s m 106
- Setting the address for the receiver 106
- Setting the wireless remote controller 106
- The address for the receiver of the wireless remote controller is factory set to 1 to change this setting proceed as follows 106
- The receiver of the wireless remote controller 106
- The wireless remote controller 106
- Setting the address for the wireless remote controller 107
- The address for the wireless remote controller is factory set to 1 to change this setting proceed as follows 107
- Multiple settings a b when an outside control central remote controller controls an indoor unit sometimes the indoor unit does not respond to on off and temperature settings commands from this controller 109
- Press the test button to quit the field set mode and return to the normal display step action 109
- Test operation 109
- Test operation sibe27 702 109
- Components the table below contains the components of the wired remote controller 110
- Field settings 110
- How to change the field settings with the wired remote controller 110
- Installation conditions the field settings have to be changed with the remote controller according to the installation conditions 110
- Sibe27 702 field settings 110
- Test operation 97 110
- The illustration below shows the wired remote controller 110
- Wired remote controller brc1d527 110
- First code no 111
- Mode no 111
- Second code no 111
- Setting to set the field settings you have to change 111
- To change the field settings proceed as follows 111
- First code no 112
- How to change the field settings with the wireless remote controller 112
- Mode no 112
- Optional accessories if optional accessories are mounted on the indoor unit the indoor unit setting may have to be changed 112
- Refer to oh06 1 or the installation manual optional handbook for each optional accessory 112
- Second code no 112
- Setting to set the field settings you have to change 112
- To change the field settings proceed as follows 112
- Wireless remote controller the illustration below shows the wireless remote controller 112
- Field settings the table below contains the possible field settings of all indoor units 113
- Overview of the field settings on the indoor units 113
- Factory settings the table below contains the factory settings of all indoor units 114
- Overview of the factory settings on the indoor units 114
- Main sub setting when using two remote controllers 115
- Setting the remote controllers are factory set to main so you only have to change one remote controller from main to sub to change a remote controller from main to sub proceed as follows 115
- Situation the main sub setting is necessary when one indoor unit is controlled by two remote controllers when you use two remote controllers control panel and separate remote controller set one to main and the other to sub you can do this by setting the switch on the remote controller s pcb 115
- Field set mode 116
- First code n second code n 116
- Individually address setting if the address must be set individually for each unit set the mode no to 30 for example for power consumption counting 116
- Mode n 116
- Setting the centralized group no 116
- Setting to set the centralized group no proceed as follows 116
- Unit n 116
- When if you want to carry out centralized control with a central remote controller and a unified on off controller you have to set the group no for each group with the remote controller 116
- Wired remote controller the illustration below shows the wired remote controller 116
- Field settings sibe27 702 117
- Inspection level 117
- Introduction the three field setting levels are 117
- Maintenance mode settings 117
- Monitoring level 117
- Test operation 117
- The field setting levels 117
- The flow chart below explains the different windows of the inspection level 117
- The inspection level the inspection level is the highest level of the three field setting levels you can change the views in the inspection level by pressing the inspection test button 117
- Changing the mode settings to enter the monitoring level and to change the maintenance mode settings proceed as follows 118
- Possible system settings the table below contains the possible system settings which are displayed on the remote controller if the test button is pushed twice shortly 118
- Maintenance mode settings the table below describes the maintenance mode settings 119
- Factory settings the table below contains the factory settings of all outdoor units 120
- Jumpers the table below contains the jumper field settings 120
- Location on pcb a1p see drawing on next page 120
- Overview of the factory settings on the outdoor units 120
- Overview of the field settings on the outdoor units 120
- Remote controller settings 120
- The table below contains the remote controller settings 120
- Bs the table below contains the bs field setting 121
- Dip switches the table below contains the dip switch field settings 121
- Existence of dip switch and bs button 121
- Rzq71b9v3b rzqs71 100b7v3b rzq100 140b8w1b 121
- This drawing shows the position of jumper jx5 on pcb a1p 121
- Bs button 122
- Dip switch 122
- Display lamp 122
- Display pc board a2p 122
- Factory settings off and heat 122
- Notes bs button pump down forced defrosting pressing the bs button forcibly operates the air conditioner in the cooling mode 1 to conduct a pump down operation sending refrigerant to outdoor unit press the bs button to forcibly operate the equipment in the cooling mode then operate the unit for about 1 minute to stabilize the system after stabilizing system close the liquid pipe stop valve on the outdoor unit and after the pressure decreases and the low pressure sensor activates close the gas pipe stop valve 2 forced defrost to activate the defrost operation during the heating operation press the bs button this will activate the forced defrost operation cooling operation when the defrost cancel conditions are met the equipment automatically switches off the defrost operation 122
- Rzq100 140c7v1b rzqs125 140c7v1b 122
- Various settings are available by using the dip switches and the bs buttons on the printed circuit board display pc board a2p 122
- A setting mode 1 123
- Field settings sibe27 702 123
- Monitor mode this mode indicates oil return operation outdoor unit class contents of retry contents of malfunction causes of stepping down operation etc 123
- Setting by bs buttons with setting mode 1 setting mode 2 and monitor mode various settings and data can be checked 123
- Setting mode 1 the initial status normal operation is setting mode 1 this mode indicates operating status test test operation hwl malfunction l n o p low noise operation or demand demand operation 123
- Setting mode 2 each operating status can be modified 123
- Test operation 123
- Using this mode the following conditions can be checked current operating condition normal test operation line inspection and normal malfunction low noise operating condition normal low noise level setting demand operating condition normal demand level 1 2 and 3 these conditions above can be checked by performing the following steps 123
- B setting mode 2 124
- In this mode settings for the following items can be made by using bs buttons 124
- Setting of demand 2 operation with this setting compressor operation can be controlled to reduce power consumption 60 80 demand is available when a demand adapter optional accessory is used 124
- The figures in the columns under no represent the number of times to push the set bs2 button 124
- Work procedure 124
- 3 connect a refrigerant recovery unit to perform refrigerant recovery for a refrigerant recovery port refer to the installation manual 4 upon completion of refrigerant recovery turn off refrigerant recovery mode by taking the following steps or turning off the power of outdoor unit 125
- If you become unsure how many times you have pushed the button push the mode bs1 button once to return to setting mode 1 and start the operating procedure all over again 125
- Setting of refrigerant recovery mode when a refrigerant recovery unit is connected on site to recover refrigerant fully open the expansion valve of the outdoor unit to help the recovery work procedure 1 stop operation 2 turn on refrigerant recovery mode by performing the following steps 125
- 1 2 3 4 5 6 7 10 126
- 7 7 7 7 7 7 7 7 126
- 7 7 7 7 7 7 7 8 126
- 7 7 7 8 8 8 8 7 126
- 7 8 8 7 7 8 8 8 126
- 8 7 8 7 8 7 8 7 126
- 9 9 9 9 9 9 9 9 126
- C monitor mode 126
- In this mode the following items can be checked by using the bs buttons 126
- D list of contents of retry and malfunction 127
- Field settings sibe27 702 127
- Push the return bs3 button to return the system to the initial state of monitor mode 127
- Push the set bs2 button to set the led display to retry or malfunction item 127
- Pushing the mode bs1 button will bring the system to the setting mode 1 127
- Take the following steps to check contents of retry and malfunction 127
- Test operation 127
- To enter monitor mode push the mode bs1 button when in setting mode 1 127
- When set bs2 button is pushed the led display for return 2 turns on 127
- When set bs2 button is pushed the led display for return 3 turns on 127
- When the return bs3 button is pushed the led display for return 1 turns on 127
- Capacity precedence setting 128
- Method when setting mode 16 26 0 02 quiet low noise operation will be carried out by presuming the current time in accordance with the outside temperature automatic mode will start when the outdoor temperature is average max of last 10 days 5 c and will be conducted for 10 hours the maximum outdoor temperature is supposed to occur at 14 00h as the time judgement is made in accordance with the outdoor temperature the above mentioned timing is an estimation only 128
- Purpose lower the operation sound of the outdoor unit 128
- Quiet low noise operation 128
- Quiet low noise operation by automatic control 128
- Setting silent operation can be activated by 1 automatic control by field setting from remote controller 2 external activation from optional pc board krp58m 128
- Table silent operation can be set by field setting from the wired remote controller 128
- When setting mode 16 26 0 04 the low noise operation will be stopped when the heating or cooling load increases in that case the operation will return to normal operation the unit will return to low noise operation when the heating or cooling load decreases again 128
- Capacity priority setting same as with the automatic control priority for capacity can be set prioirity for capacity will be activated by changing field setting 26 0 03 in combination with the closed contact on krp58m 129
- Defrost operation 129
- Exceptions the quiet low noise operation will be overruled in the following conditions 129
- External activation from optional pc board 129
- Graph quiet low noise operation can also be activated from the optional pc board 129
- Oil recovery 129
- Output on x801m 12vdc 12ma maximum wire length 100 meter 129
- Power supply connector on outdoor pcb x77a 129
- Pump down residual operation 129
- Quiet low noise operation will start when the contact on lnop com is closed and will remain active as long as the contact is closed no field setting on the outdoor unit or by remote controller is required quiet low noise operation will be ended when the contact is re opened use of the krp58m enables the use of an external time clock 129
- Sound reduction 129
- Startup control 129
- Transmission connector on outdoor pc board x6a 129
- I demand function 130
- Demand 1 power consumption limitation in function of setting on ds1 131
- Demand 2 power consumption limitation set to 40 131
- Demand 3 forced thermostat off 131
- Setting for low humidity application 132
- Function details 133
- Parameters 133
- Graph 1 target evaporating temperature control in case of factory setting 16 26 2 01 134
- Graph 2 target evaporating temperature control when low humidity application is selected field setting 16 26 2 03 135
- 2 c for 5 minutes continuously 136
- C no change from standard setting 136
- Change thermostat control 136
- Graph 3 target evaporating temperature control when low humidity application freeze up operation prevention is selected field setting 16 26 2 04 136
- In order to increase continuous operation of the unit in low latent heat applications and avoid the rise of temperature after thermostat off the thermostat control will be changed when using field settings 16 26 2 03 16 26 2 04 136
- Thermostat off 136
- Thermostat on 136
- Capacity when low humidity application freeze up operation prevention is selected field setting 16 26 2 04 137
- Capacity when low humidity application is selected field setting 16 26 2 03 137
- Defrost start setting 137
- Note operation range on indoor side expanded from minimum 12 cwb to 11 cwb when using lh setting do not use a setpoint below 20 c to avoid operation out of the indoor operation range 11 cwb be sure to set the indoor fan to high speed 137
- Refer to defrost operation on p53 137
- General operation data 138
- Guide lines for optimal operation condition 138
- Indoor unit fan h operation compressor rated frequency 138
- Test run and operation data 138
- The operation value guide lines when operating under standard conditions at rated frequency by pushing the test run button on the remote controller are as given in the table below 138
- During or after maintenance when the power supply is turned back on operation restarts automatically by the auto restart function please exercise the proper caution 139
- Standard conditions 139
- When perfoming maintenance you should at least perform the following inspections 139
- Correlation of air conditioner s operation status and pressure running current 140
- Dirt in the refrigerant clogs filters inside the piping and is basically the same phenomenon as pump down 140
- Pressure differential between high and low pressure becomes low 140
- Water in the refrigerant freezes inside the capillary tube or expansion valve and is basically the same phenomenon as pump down 140
- What happens in comparison to normal values is summarized in the table below measured from 15 20 minutes or more after operation starts 140
- When cooling 140
- When heating 140
- Air flow rate high 141
- Conditions the illustrations in this section are based on the following conditions 141
- Equivalent piping length 7 m 141
- Level difference 0 m 141
- Notes depending on operation and installation conditions the indoor unit can change over to freeze up operation indoor de icing to reduce the freeze up operation indoor de icing frequency it is recommended to install the outdoor unit in a location not exposed to wind 141
- Operation range 141
- Operation range cooling the illustration below shows the operation range 141
- Operation range heating the illustration below shows the operation range 141
- Rzq series rzqs series 141
- Test operation 141
- Test run and operation data sibe27 702 141
- How to handle request for maintenance 31 142
- Part 6 troubleshooting 142
- Procedure of self diagnosis by remote controller 52 142
- Troubleshooting based on equipment condition 32 142
- Troubleshooting by led indications 60 142
- Troubleshooting by remote controller display led display 62 142
- Find out the situation according to the following procedure when there is a request for service from the customer 144
- General troubleshooting flowchart 144
- How to handle request for maintenance 144
- Sibe27 702 how to handle request for maintenance 144
- Troubleshooting 131 144
- Overview 145
- Overview of general problems 145
- Troubleshooting based on equipment condition 145
- Equipment does not operate 146
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 147
- Troubleshooting 147
- Troubleshooting based on equipment condition sibe27 702 147
- Indoor fan operates but compressor does not 148
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 149
- Troubleshooting 149
- Troubleshooting based on equipment condition sibe27 702 149
- Cooling heating operation starts but stops immediately 150
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 151
- Troubleshooting 151
- Troubleshooting based on equipment condition sibe27 702 151
- After unit shuts down it cannot be restarted for a while 152
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 153
- Troubleshooting 153
- Troubleshooting based on equipment condition sibe27 702 153
- Equipment operates but does not provide cooling 154
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 155
- Troubleshooting 155
- Troubleshooting based on equipment condition sibe27 702 155
- Equipment operates but does not provide heating 156
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 157
- Troubleshooting 157
- Troubleshooting based on equipment condition sibe27 702 157
- Applicable model all models of skyair series 158
- Clogged air filter 158
- Equipment discharges white mist 158
- Error detection method 158
- Error generating condition 158
- Humid installation site 158
- Installation site is dirty and with dense oil mists 158
- Malfunction of fan motor 158
- Sibe27 702 troubleshooting based on equipment condition 158
- Soiled heat exchanger 158
- Supposed causes 158
- Troubleshooting 158
- Troubleshooting 145 158
- Equipment produces loud noise or shakes 159
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 160
- Sibe27 702 troubleshooting based on equipment condition 160
- Troubleshooting 160
- Troubleshooting 147 160
- Animal s hair 161
- Applicable model all models of skyair series 161
- Application cloth shop 161
- Carpet 161
- Equipment discharges dust 161
- Error detection method 161
- Error generating condition 161
- Supposed causes 161
- Troubleshooting 161
- Troubleshooting based on equipment condition sibe27 702 161
- Applicable model all models of skyair series 162
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 162
- Error detection method 162
- Error generating condition 162
- Remote controller lcd displays 88 162
- Sibe27 702 troubleshooting based on equipment condition 162
- Supposed causes 162
- Troubleshooting 162
- Troubleshooting 149 162
- Swing flap does not operate 163
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 164
- Sibe27 702 troubleshooting based on equipment condition 164
- Troubleshooting 164
- Troubleshooting 151 164
- Inspection mode 165
- Local setting mode 165
- Normal mode 165
- Procedure of self diagnosis by remote controller 165
- Service mode 165
- Test operation mode 165
- The following modes can be selected by using the inspection test operation button on the remote control 165
- The inspection test button 165
- Fault diagnosis by wired remote controller 166
- Checking to find the error code proceed as follows 167
- Fault diagnosis by wireless remote controller 167
- Introduction contrary to the wired remote controller the wireless remote controller does not display the error code instead the operation led on the light reception section flashes 167
- Remote controller display malfunction code and contents 171
- Error code displays automatically and system stops inspect and repair it in the case of the shaded error codes inspection is not displayed the system operates but be sure to inspect and repair it error code displays with blinking the system operates but be sure to inspect and repair it 172
- Notes 1 there is a possibility of open phase power supply check power supply also 2 operation when a malfunction occurs may differ according to the model 3 rzq100 140c7v1b rzqs125 140c7v1b 4 rzq71b9v3b rzqs71 100b7v3b rzq100 140b8w1b 172
- Troubleshooting by led indications 173
- Troubleshooting by led on the indoor units 173
- Led on 7 led off 5 led blinks no connection with troubleshooting 174
- Notes 1 turn off the power switch and turn it on again after 5 seconds or more check the error condition and diagnose the problem 2 turn off the power switch after 5 seconds or more disconnect the connection wire 2 then turn on the power switch if the hap on the outdoor unit pcb flashes after about 10 seconds the indoor unit pcb is faulty 3 also check for open phase 174
- Remark the error detection monitor continues to indication the previously generated error until the power switch is turned off be sure to turn off the power switch after inspection 174
- Rzq100 140c7 rzqs125 140c7v1b 1 phase 174
- Rzq71b9 rzqs71 100b7v3b 1 phase rzq100 140b8w1b 3 phase 174
- The following diagnosis can be conducted by turning on the power switch and checking the led indication on the printed circuit board of the outdoor unit 174
- Troubleshooting by led on outdoor unit pc board 174
- Explanation for symbols 5 led blinks 4 led on 7 led off no connection with troubleshooting 175
- High probability of malfunction 175
- Indoor malfunctions 175
- Low probability of malfunction no possibility of malfunction do not replace 175
- Possibility of malfunction 175
- Troubleshooting by remote controller display led display 175
- Notes 1 possibility of open phase in power supply 176
- Outdoor malfunctions 176
- System malfunctions 177
- Overview of the outdoor safety devices 178
- Overview of the indoor safety devices 179
- A1 malfunctioning indoor pc board 180
- A3 malfunction of drain water level system 181
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 182
- Note if a3 is detected by a pc board which is not mounted with x15a the pc board is defective 182
- Sibe27 702 troubleshooting by remote controller display led display 182
- Troubleshooting 182
- Troubleshooting 169 182
- A6 indoor unit fan motor lock 183
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 184
- Sibe27 702 troubleshooting by remote controller display led display 184
- Troubleshooting 184
- Troubleshooting 171 184
- A7 swing flap motor malfunction lock 185
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 186
- Sibe27 702 troubleshooting by remote controller display led display 186
- Troubleshooting 186
- Troubleshooting 173 186
- Af malfunctioning drain system 187
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 188
- Sibe27 702 troubleshooting by remote controller display led display 188
- Troubleshooting 188
- Troubleshooting 175 188
- Aj malfunctioning capacity setting 189
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 190
- Sibe27 702 troubleshooting by remote controller display led display 190
- Troubleshooting 190
- Troubleshooting 177 190
- C4 c9 thermistor abnormality 191
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 192
- Sibe27 702 troubleshooting by remote controller display led display 192
- Troubleshooting 192
- Troubleshooting 179 192
- Cj malfunctioning remote controller air thermistor 193
- Cc humidity sensor system malfunction 194
- E1 failure of outdoor unit pc board 195
- Faulty outdoor unit pc board 195
- Malfunction decision conditions 195
- Method of malfunction detection 195
- Microcomputer checks whether 195
- Prom is normal 195
- Prom malfunctions when turning the power supply on 195
- Prom when 195
- Remote controller display 195
- Supposed causes 195
- Troubleshooting 195
- Troubleshooting by remote controller display led display sibe27 702 195
- E3 abnormal high pressure detected by the hps 196
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 197
- Troubleshooting 197
- Troubleshooting by remote controller display led display sibe27 702 197
- E4 actuation of low pressure sensor single phase b series 198
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 199
- Troubleshooting 199
- Troubleshooting by remote controller display led display sibe27 702 199
- E4 actuation of low pressure sensor three phase b series 200
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 201
- Troubleshooting 201
- Troubleshooting by remote controller display led display sibe27 702 201
- E4 actuation of low pressure sensor single phase c series 202
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 203
- Troubleshooting 203
- Troubleshooting by remote controller display led display sibe27 702 203
- E5 compressor motor lock 204
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 205
- Troubleshooting 205
- Troubleshooting by remote controller display led display sibe27 702 205
- E7 malfunction of outdoor unit fan motor 206
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 207
- Troubleshooting 207
- Troubleshooting by remote controller display led display sibe27 702 207
- Sibe27 702 troubleshooting by remote controller display led display 208
- Troubleshooting 195 208
- E9 malfunction of electronic expansion valve 209
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 210
- Sibe27 702 troubleshooting by remote controller display led display 210
- Troubleshooting 210
- Troubleshooting 197 210
- Troubleshooting 211
- Troubleshooting by remote controller display led display sibe27 702 211
- F3 malfunctioning in discharge pipe temperature 212
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 213
- Troubleshooting 213
- Troubleshooting by remote controller display led display sibe27 702 213
- Applicable models rzq s 71 140 214
- Disconnected lead wire 214
- Disconnection in high pressure switch harness 214
- Faulty connection of high pressure switch connector 214
- Faulty outdoor unit pc board 214
- H3 malfunctioning hps system 214
- Incomplete high pressure switch 214
- Malfunction decision conditions 214
- Method of malfunction detection 214
- Remote controller display 214
- Sibe27 702 troubleshooting by remote controller display led display 214
- Supposed causes 214
- The protection device circuit checks continuity in the high pressure switch 214
- Troubleshooting 214
- Troubleshooting 201 214
- When there is no continuity in the high pressure switch during compressor stops operating 214
- H4 abnormal low pressure sensor 215
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 216
- Sibe27 702 troubleshooting by remote controller display led display 216
- Troubleshooting 216
- Troubleshooting 203 216
- Abnormality is detected according to the temperature detected by each individual thermistor 217
- Applicable models rzq s 71 140 217
- Faulty connection of connector 217
- Faulty outdoor unit pc board control pc board 217
- Faulty thermistor 217
- H9 j3 j5 j6 j7 j8 217
- H9 j3 j5 j6 j7 j8 malfunction of thermistor system 217
- Malfunction decision conditions 217
- Method of malfunction detection 217
- Refer to p241 242 for thermistor temperature resistance characteristics 217
- Remote controller display 217
- Supposed causes 217
- Troubleshooting 217
- Troubleshooting by remote controller display led display sibe27 702 217
- When thermistor is disconnected or short circuited during operation 217
- J1 malfunction of pressure sensor 218
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 219
- Check if the connector for the pressure sensor x17a is correctly connected to the outdoor unit pc board a1p 219
- Connect correctly 219
- Detected pressure 219
- Measure the voltage v between the pins 2 and 3 of the above connector 1 219
- No is it connected correctly 219
- Replace the pressure sensor s1nph 219
- Troubleshooting 219
- Troubleshooting by remote controller display led display sibe27 702 219
- Yes replace outdoor unit pc board a1p 219
- Jc malfunction of suction pipe pressure sensor 220
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 221
- Refer to pressure sensor pressure voltage characteristics table on 221
- Troubleshooting 221
- Troubleshooting by remote controller display led display sibe27 702 221
- Voltage measurement point 221
- L1 faulty outdoor pc board 222
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 223
- Troubleshooting 223
- Troubleshooting by remote controller display led display sibe27 702 223
- L4 radiation fin temperature increased 224
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 225
- Troubleshooting 225
- Troubleshooting by remote controller display led display sibe27 702 225
- L5 dc output overcurrent instantaneous 226
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 227
- Troubleshooting 227
- Troubleshooting by remote controller display led display sibe27 702 227
- L8 electronic thermal time lag 228
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 229
- Troubleshooting 229
- Troubleshooting by remote controller display led display sibe27 702 229
- L9 stall prevention time lag 230
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 231
- Troubleshooting 231
- Troubleshooting by remote controller display led display sibe27 702 231
- Lc malfunction of transmission system between control and inverter pc board 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 remote controller display led display sibe27 702 233
- Applicable models rzq s 71 140 234
- Faulty magnetic relay k11r k12r 234
- Faulty main circuit capacitor 234
- Faulty outdoor inverter pc board 234
- Improper main circuit wiring 234
- Malfunction decision conditions 234
- Malfunction is detected according to the voltage waveform of main circuit capacitor built in inverter 234
- Method of malfunction detection 234
- Open phase 234
- P1 open phase or power supply voltage imbalance 234
- Power unit disconnection in diode module 234
- Remote controller display 234
- Supposed causes 234
- Troubleshooting 234
- Voltage imbalance between phases 234
- When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase 234
- Applicable models rzq s 71 140 235
- Detection by open or short circuit of the radiator fin temperature thermistor during the compressor stops operating 235
- Faulty outdoor unit pc board 235
- Faulty radiator fin temperature thermistor 235
- Malfunction decision conditions 235
- Method of malfunction detection 235
- P4 malfunction of radiator fin temperature thermistor 235
- Refer to p241 242 for thermistor temperature resistance characteristics 235
- Remote controller display 235
- Supposed causes 235
- Troubleshooting 235
- Troubleshooting by remote controller display led display sibe27 702 235
- When open or short circuit of the radiator fin temperature thermistor is detected during the compressor stops operating 235
- Pj failure of capacity setting 236
- U0 gas shortage malfunction 237
- U0 gas shortage malfunction 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 remote controller display led display sibe27 702 239
- U2 abnormal power supply voltage 240
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 241
- Troubleshooting 241
- Troubleshooting by remote controller display led display sibe27 702 241
- U4 uf malfunction of transmission between indoor and outdoor unit 242
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 243
- Troubleshooting 243
- Troubleshooting by remote controller display led display sibe27 702 243
- Troubleshooting diagnosis of incorrect or broken disconnected wiring if the leds on the indoor unit pc board are off it indicates that the transmission wiring between indoor and outdoor units may be incorrect or broken disconnected 243
- Sibe27 702 troubleshooting by remote controller display led display 244
- Troubleshooting 231 244
- Applicable models rzq s 71 140 245
- Check the transmission between the indoor and outdoor units with a microcomputer when the power turned on detect by checking the following temperature differences during compressor operation a difference in temperature detected by the indoor heat exchanger thermistor r2t and the indoor suction air thermistor r1t b difference in evaporation temperature te or condensation temperature tc during heating operation detected by the indoor heat exchanger thermistor r2t and the compressor sensor 245
- Clogged refrigerant piping system 245
- Faulty inter unit wiring between the indoor and outdoor units 245
- Malfunction decision conditions 245
- Method of malfunction detection 245
- Mismatching of wiring and piping 245
- Refrigerant shortage out of gas 245
- Remote controller display 245
- Supposed causes 245
- Troubleshooting 245
- Troubleshooting by remote controller display led display sibe27 702 245
- Uf malfunction of transmission between indoor and outdoor unit piping and wiring mismatch gas shortage 245
- ºc 24ºc during heating operation 245
- Applicable models all models of indoor units 246
- Connection of two master remote controllers when using two remote controllers 246
- Error generation the error is generated when the microprocessor detects that the transmission between the indoor unit and the remote controller is not normal over a certain amount of time 246
- Malfunctioning indoor pc board 246
- Malfunctioning remote controller 246
- Outside cause noise 246
- Remote controller display 246
- Sibe27 702 troubleshooting by remote controller display led display 246
- Supposed causes the possible causes are 246
- Troubleshooting 246
- Troubleshooting 233 246
- U5 malfunction of transmission between indoor unit and remote controller 246
- Applicable models all models of indoor units 247
- Connection among sub remote controllers 247
- Error generation the error is generated when in case of controlling with two remote controllers the microprocessor detects that the transmission between the indoor unit and the remote controllers main and sub is not normal over a certain amount of time 247
- Malfunctioning remote controller pc board 247
- Remote controller display 247
- Supposed causes the possible causes are 247
- Transmission error between main remote controller and sub remote controller 247
- Troubleshooting 247
- Troubleshooting by remote controller display led display sibe27 702 247
- U8 malfunction of transmission between main remote controller and sub remote controller 247
- Ua malfunctioning field setting switch 248
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 249
- Troubleshooting 249
- Troubleshooting by remote controller display led display sibe27 702 249
- Uc centralized address setting error 250
- Check no 251
- Checking to check the installation condition proceed as follows 251
- Outdoor unit checking the installation condition 251
- Troubleshooting 251
- Troubleshooting by remote controller display led display sibe27 702 251
- Check no 252
- Checking to check the electronic expansion valve proceed as follows 252
- Outdoor unit checking the expansion valve 252
- Check no 253
- Checking the thermistors 253
- Checking to check the thermistors proceed as follows 253
- For more information about these thermistors see 253
- Functions of thermistors on p37 253
- Overview of thermistors the table below contains an overview of the thermistors 253
- Thermistors if the cause of the problem is related to the thermistors then the thermistors should be checked prior to changing the pc board 253
- Wiring diagrams outdoor units 253
- Applicable sensors a indoor suction air coil outdoor ambient coil pipe without discharge 254
- B outdoor fin 254
- Check no 254
- Resistance conversion table ambient coil fin 254
- Temperature resistance the table below is the thermistor indoor suction air coil outdoor ambient coil pipe without discharge fin temperature resistance conversion table 254
- Check no 255
- Resistance conversion table discharge pipe sensor 255
- Temperature resistance the table below is the discharge pipe thermistor temperature resistance conversion table 255
- Abnormally high pressure level is mostly caused by the condenser side the following contents are provided by service engineer based on their field checks further the number is listed in the order of degree of influence 256
- Check no 256
- Evaluation of abnormal high pressure 256
- In cooling operation 256
- In heating operation 256
- Abnormally low pressure level is mostly caused by the evaporator side the following contents are provided based on field checking of service engineer further the number is listed in the order of degree of influence 257
- Check no 257
- Evaluation of abnormal low pressure 257
- In cooling operation 257
- In heating operation 257
- Check no 258
- Clogged points 258
- Temperature differences must occur before or after the clogged points 258
- 1 turn the power supply off 2 with the fan motor connector disconnected measure the resistance between each pin then make sure that the resistance is more than the value mentioned in the following table 259
- Check no 259
- For rzq s 71 140 models 259
- Outdoor unit fan motor signal line 259
- And continuity may be reversed 261
- Check no 1 261
- If a digital tester is used for the measurement of continuity 261
- If there is continuity the resistance should be the same as each phase 261
- Judgment according to the continuity check by using an analog tester 1 do not touch the charged area high voltage for 10 minutes after turning the power supply off 2 if you must touch such an area make sure that the power supply voltage of power transistor is 50 v or less 3 disconnect the connector of the outdoor unit fan motor when the outdoor unit fan is rotating against a strong wind the condenser is charged and electric shock may result therefore disconnect the connector from the outdoor unit fan motor after confirming that the outdoor unit fan has stopped 4 before measuring the continuity disconnect the connection between compressor and power transistor 5 measure the continuity in the following procedure judgment normal if the continuity check results in the following 261
- Outdoor unit check for power transistor 261
- Power transistor on inverter pc board 261
- Check no 2 262
- Low pressure sensor 262
- Measure voltage dc here 262
- Microcomputer a d input 262
- Outdoor unit check low pressure sensor 262
- Outdoor unit pc board 262
- Rzq71b9v3b rzqs71 100b7v3b measure the voltage dc between pins 2 and 3 of the connector 262
- Sibe27 702 troubleshooting by remote controller display led display 262
- Troubleshooting 249 262
- In heating operation 1 as suction superheat degree increases due to gas shortage the electronic expansion valve tends to open opens fully to avoid overheat operation 2 as suction superheat degree increases due to gas shortage compressor frequency decreases because suction superheat degree is controlled in order to prevent oil to the outdoor heat exchanger from being retained 3 because of 1 and 2 above evaporator capacity and compressor frequency decrease despite a large difference large load between temperature set by the remote controller and indoor suction temperature resulting that high pressure cannot be maintained and heating capacity becomes unavailable also a decrease in evaporator capacity frequently puts the system in defrost operation 4 if gas shortage worsens high pressure becomes smaller than saturated pressure equivalent to indoor heat exchanger temperature or indoor suction temperature 264
- Sibe27 702 troubleshooting by remote controller display led display 264
- Troubleshooting 251 264
- As criteria for judging whether refrigerant is excessively charged or not refer to the following operating conditions 265
- Check for excessive refrigerant charging 265
- Check no 4 265
- In cooling operation 1 because high pressure rises due to excessive charging overload control is carried out and capacity tends to run short 2 considering pressure load compressor discharge pipe temperature is low 3 subcooled degree of condensate liquid becomes large therefore temperature of blown air passing through subcooled part decreases in heating operation 265
- Troubleshooting 265
- Troubleshooting by remote controller display led display sibe27 702 265
- Check for factors causing wet operation check no 5 266
- Dimensions 56 268
- Installation and service space rzq100 140c7 rzqs125 140c7 rzq100 140b8 59 268
- Part 7 appendix 268
- Pcb layout 85 268
- Piping diagrams 61 268
- Switch box layout 82 268
- Wiring diagrams 79 268
- Components 269
- Dimensions 269
- Outlook and dimensions 269
- Rzq71b9 rzqs71 100b7v3b single phase 269
- The illustration below shows the outlook and the dimensions of the unit mm 269
- The table below contains the different components of the unit 269
- Components 270
- Outlook and dimensions 270
- Rzq100 140c rzqs125 140c7v1b single phase 270
- The illustration below shows the outlook and the dimensions of the unit mm 270
- The table below contains the different components of the unit 270
- Components 271
- Outlook and dimensions 271
- Rzq100 140b8w1b three phase 271
- The illustration below shows the outlook and the dimensions of the unit mm 271
- The table below contains the different components of the unit 271
- Installation and service space rzq100 140c7 rzqs125 140c7 rzq100 140b8 272
- Non stacked 272
- The illustrations and table below show the required installation and service space mm the values between brackets are for rzq100 140c7 rzqs125 140c7 rzq100 140b8 class 272
- 100 mm is required as the dimension for laying the upper outdoor unit s drain pipe 273
- Do not stack more than one unit 273
- Get the portion a sealed so that air from the outlet does not bypass 273
- Multiple rows 273
- Relation of dimensions of h a and l are shown in the table below 273
- Stacked 273
- The illustration below shows the required installation and service space mm the values in brackets are for rzq100 140 rzqs125 140 class 273
- The illustration below shows the required installation and service space mm the values in brackets are for the 100 140 class 273
- Components the table below contains the different components of the piping diagrams 274
- Piping diagrams 274
- Piping symbol 274
- Appendix 275
- Note piping symbol number refer to p261 275
- Pair system 275
- Piping diagrams sibe27 702 275
- Rzq71b9 rzqs71 100b7v3b single phase 275
- Appendix 263 276
- Note piping symbol number refer to p261 276
- Rzq100 140c7 rzqs125 140c7v1b single phase 276
- Sibe27 702 piping diagrams 276
- Appendix 277
- Note piping symbol number refer to p261 277
- Piping diagrams sibe27 702 277
- Rzq100 140b8w1b three phase 277
- Appendix 265 278
- Note piping symbol number refer to p261 278
- Rzq71b9 rzqs71 100b7v3b single phase 278
- Sibe27 702 piping diagrams 278
- Twin system 278
- Appendix 279
- Note piping symbol number refer to p261 279
- Piping diagrams sibe27 702 279
- Rzq100 140c7 rzqs125 140c7v1b single phase 279
- Appendix 267 280
- Note piping symbol number refer to p261 280
- Rzq100 140b8w1b three phase 280
- Sibe27 702 piping diagrams 280
- Appendix 281
- Note piping symbol number refer to p261 281
- Piping diagrams sibe27 702 281
- Rzq100 140c7 rzqs125 140c7v1b single phase 281
- Triple system 281
- Appendix 269 282
- Note piping symbol number refer to p261 282
- Rzq100 140b8w1b three phase 282
- Sibe27 702 piping diagrams 282
- Appendix 283
- Double twin system 283
- Note piping symbol number refer to p261 283
- Piping diagrams sibe27 702 283
- Rzq100 140c7 rzqs125 140c7v1b single phase 283
- Appendix 271 284
- Note piping symbol number refer to p261 284
- Rzq100 140b8w1b three phase 284
- Sibe27 702 piping diagrams 284
- Outdoor units the table below contains the refrigerant pipe connection diameters 285
- Pipe connection diameters 285
- Caution 286
- How to re use existing piping 286
- If copper piping is corroded existing piping re use is not allowed 286
- In all circumstances where these conditions can not be fully met new piping has to be installed 286
- Introduction 286
- Notes oil contamination can be checked using the daikin oil checker card 286
- Re using existing field piping 286
- Rzqs can not be reused 286
- See further notes in this section for twin triple and double twin applications 286
- Single side thermal insulation is not allowed for re use 286
- When installing a system using an rzq outdoor unit existing or pre installed piping can be used according to below specified conditions 286
- Appendix 287
- Branch piping l2 l7 can be re used but standard pipe size only 287
- Check welded connections for gas leaks if the local piping has welded connections 287
- Construction material phosphoric acid deoxidized seamless copper for refrigerant 287
- Do not allow anything other than the designated refrigerant to get mixed into the freezing cycle air moisture if any refrigerant gas leaks while working on the unit ventilate the room thoroughly immediately 287
- Main piping l1 can be re used size up size down is allowed see further in this section for restrictions 287
- Make sure all installation tools are designed for use on r 410a refrigerant to withstand the pressure 287
- Notes for twin triple and double twin 287
- Pipe φ temper grade of piping material minimal thickness t mm 6 9 12 o 0 0 15 o 1 19 1 2h 1 o annealed 1 2h half hard 287
- Piping diagrams sibe27 702 287
- Precautions on refrigerant piping 287
- Re use of branch piping is not allowed 287
- Selection of piping material 287
- Temper grade use piping with temper grade in function of the pipe diameter as listed in table below 287
- The pipe thickness of the refrigerant piping should comply with relevant local and national regulations the minimal pipe thickness for r 410a piping must be in accordance with the table below 287
- Use r 410a only when adding refrigerant 287
- Vacuum pump use a 2 stage vacuum pump with a non return valve make sure the pump oil does not flow oppositely into the new system while the pump is not working use a vacuum pump which can evacuate to 100 kpa 5 torr 755 mmhg 287
- Not using the standard pipe size may result in capacity decrease it is up to the installer to judge on this phenomenon carefully in function of the complete installation 288
- Pipe size down and pipe size up is available for main piping l1 only 288
- Refrigerant pipe size 288
- Allowable pipe length and heigth difference 289
- When re using existing piping refer to below table for allowable piping length and heigth difference figures in brackets are equivalent lengths 289
- After completing the installation carry out an inspection of the piping connections by pressure test using nitrogen 291
- Caution for flare connections 291
- Refer to below table for correct flare dimensions and tightening torques too high tightening force may cause refrigerant leak because of flare cracking 291
- When connecting the flare nut apply refrigerating machine oil to the flare inside and outside and first screw the nut 3 or 4 turns by hand coat the indicated surfaces using ether or ester oil 291
- Outdoor unit 292
- Rzq71b9 rzqs71 100b7v3b single phase 292
- The illustration below shows the wiring diagram of the unit 292
- Wiring diagrams 292
- Appendix 293
- Rzq100 140c7 rzqs125 140c7v1b single phase 293
- The illustration below shows the wiring diagram of the unit 293
- Wiring diagrams sibe27 702 293
- Appendix 281 294
- Rzq100 140b8w1b three phase 294
- Sibe27 702 wiring diagrams 294
- The illustration below shows the wiring diagram of the unit 294
- Rzq71b9 rzqs71 100b7v3b single phase 295
- Switch box layout 295
- The illustration below shows the switch box layout 295
- Rzq100 140c7 rzqs125 140c7v1b single phase 296
- The illustration below shows the switch box layout 296
- Rzq100 140b8w1b three phase 297
- The illustration below shows the switch box layout 297
- Appendix 285 298
- Connectors the table below describes the pc board connectors 298
- Control pc board a1p the illustration below shows the pc board connectors 298
- Pcb layout 298
- Rzq71b9 rzqs71 100b7v3b single phase 298
- Sibe27 702 pcb layout 298
- Appendix 299
- Connectors the table below describes the pc board connectors 299
- Inverter pc board a2p the illustration below shows the pc board connectors 299
- Pcb layout sibe27 702 299
- Appendix 287 300
- Connectors the table below describes the pc board connectors 300
- Control inverter pc board a1p the illustration below shows the pc board connectors 300
- Rzq100 140c7 rzqs125 140c7v1b single phase 300
- Sibe27 702 pcb layout 300
- X107a x111a 300
- X28a x51a x77a 300
- Appendix 301
- Connectors the table below describes the pc board connectors 301
- Control pc board the illustration below shows the pc board connectors 301
- Pcb layout sibe27 702 301
- Rzq100 140b8w1b three phase 301
- Appendix 289 302
- Connectors the table below describes the pc board connectors 302
- Inverter pc board the illustration below shows the pc board connectors 302
- Sibe27 702 pcb layout 302
- Part 8 removal procedure 304
- Rzq100 140c7 rzqs125 140c7v1b 06 304
- Rzq71b9 rzqs71 100b7v3b rzq100 140b8w1b 92 304
- Removal of outside panels 305
- Rzq71b9 rzqs71 100b7v3b rzq100 140b8w1b 305
- Removal of propeller fan and fan motor 306
- Removal of switch box 307
- Removal of pc board assy 1 309
- Removal of pc board assy 2 310
- Removal of pc board assy 3 312
- Removal of low pressure sensor electronic expansion valve and others 313
- Removal of thermistor 315
- Removal of four way valve 317
- Removal of compressor 318
- Removal of outside panels 319
- Rzq100 140c7 rzqs125 140c7v1b 319
- Removal of propeller fan and fan motor 320
- Removal of switch box 321
- Removal of pc board 322
- Removal of pressure sensor electronic expansion valve and others 323
- Removal of thermistor 324
- Removal of four way valve 325
- Removal of compressor 326
- Part 9 328
- Part 9 precautions for new refrigerant r 410a 328
- Precautions for new refrigerant r 410a 328
- Precautions for new refrigerant r 410a 16 328
- About refrigerant r 410a 329
- 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 329
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 329
- Outline 329
- Precautions for new refrigerant r 410a 329
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 329
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 329
- Precautions for new refrigerant r 410a 317 330
- Sibe27 702 precautions for new refrigerant r 410a 330
- Thermodynamic characteristic of r 410a 330
- Refrigerant cylinders 331
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 332
- Copper tube material and thickness 332
- Material 332
- O o o o 1 2h 332
- O o o o o 332
- O soft annealed h hard drawn 332
- Pipe size 332
- R 407c 332
- R 410a 332
- 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 332
- Service tools 332
- Thickness t mm 0 0 0 1 1 332
- Tool compatibility 332
- Φ 6 φ 9 φ 12 φ 15 φ 19 332
- 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 333
- Differences 2 change of dimension a 333
- Flaring tool 333
- Specifications 2 dimension a 333
- Unit mm 333
- Numerics 338
- Drawings flow charts 342
- 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 344
- Cautions on product corrosion 344
- 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 344
- Http www daikin com global_ac 344
- If you have any enquiries please contact your local importer distributor and or retailer 344
- Printed in singapore 06 2007 cos 344
- 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 344
- 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 344
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