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Daikin RZQ71C7V1B [231/314] U5 malfunction of transmission between indoor unit and remote controller
![Daikin RZQ71C7V1B [231/314] U5 malfunction of transmission between indoor unit and remote controller](/views2/1769713/page231/bge7.png)
Troubleshooting by Remote Controller Display / LED Display SiBE28-804
220 Troubleshooting
5.41 “
U5
” Malfunction of Transmission between Indoor Unit
and Remote Controller
Remote
Controller
Display
U5
Applicable
Models
All models of indoor units
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.
Supposed
Causes
The possible causes are:
Malfunctioning remote controller
Malfunctioning indoor PC board
Outside cause (noise...)
Connection of two master remote controllers (when using two remote controllers).
Troubleshooting
Control by 2 remote
controllers
All
indoor unit
PCB microcomputer
normal monitors
flashing
Using
multicore
transmission wiring
between indoor unit
and remote
controller
Is "U5" displayed
constantly?
SS1 of both
remote controllers is
set to MAIN.
Resets
normally when
power supply is turned
off temporarily.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Set one of the remote
controllers to SUB, turn
off the power supply
temporarily, then restart
operation.
Malfunction could be
produced by noise.
Check the surrounding
area and restart
operation.
Failure of remote
controller PC board or
replacement of defective
indoor unit PC board.
Problem could be
caused by external
factor (noise etc.) other
than malfunction.
Indoor unit PC board
replacement.
Change to
double-core
independent cable.
YES
YES
YES
YESYES
YES
NO
NO
NO
NO
NO
Содержание
- R 410a heat pump 50hz 1
- Skyair 1
- Combination 2
- External appearance 3 model name and power supply 2
- General functionality 3 2
- Introduction vi 2
- Method of operating remote controller 6 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 remote controller 9 2
- Part 4 functional description 1 2
- Skyair heat pump r 410a gqi iii c series 50hz 2
- Skyair inverter gqi iii series 2
- Specifications 0 2
- Table of contents 2
- Wired remote controller 0 2
- Wireless remote controller 4 2
- Expansion valve regulating functions 8 3
- Field settings 9 3
- Frequency regulating functions 3 3
- Indoor unit functional concept 3 3
- Outdoor unit fan speed control 1 3
- Outdoor unit functional concept 1 3
- Part 5 test operation 3 3
- Test operation 4 3
- How to handle request for maintenance 23 4
- Part 6 troubleshooting 21 4
- Procedure of self diagnosis by remote controller 44 4
- Test run and operation data 16 4
- Troubleshooting based on equipment condition 24 4
- Troubleshooting by led indications 52 4
- Troubleshooting by remote controller display led display 54 4
- Dimensions 42 5
- Installation and service space rzq100 140c7 rzqs125 140c7 44 5
- Part 7 appendix 41 5
- Piping diagrams 46 5
- Drawings flow charts v 6
- Index i 6
- Part 8 removal procedure 67 6
- Part 9 precautions for new refrigerant r 410a 87 6
- Pcb layout 64 6
- Precautions for new refrigerant r 410a 88 6
- Rzq100 140c7 rzqs125 140c7v1b 78 6
- Rzq71c7 rzqs71 100c7v1b 68 6
- Switch box layout 62 6
- Wiring diagrams 60 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
- Skyair inverter gqi iii series 12
- Combination 14
- External appearance 3 model name and power supply 14
- Part 1 general information 14
- Combination 15
- Combination overview 15
- Notes explanation of connection p 4 p pair 2 twin 3 triple 4 double twin 15
- The table below contains the possible combinations between indoor units and outdoor units of the sky air rzq s series 15
- Combination matrix 16
- Notes 1 possible indoor types fcqh71 fcq35 71 ffq35 60 fhq35 71 fbq35 71 fuq71 faq71 fvq71 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 16
- External appearance 17
- Indoor units 17
- Outdoor units 17
- Remote controller 17
- Model name and power supply 18
- Part 2 specifications 20
- Specifications 0 20
- Rzq71c7 100c7 125c7 and 140c7 single phase 21
- Specifications 21
- Technical specifications 21
- The table below contains the technical specifications 21
- Sibe28 804 specifications 22
- Specifications 11 22
- Electrical data 23
- Electrical specifications 23
- Specifications 23
- Specifications sibe28 804 23
- The table below contains the electrical specifications 23
- Sibe28 804 specifications 24
- Specifications 13 24
- Symbols 24
- Rzqs71c7 100c7 125c7 and 140c7 single phase 25
- Specifications 25
- Specifications sibe28 804 25
- Technical specifications 25
- The table below contains the technical specifications 25
- Sibe28 804 specifications 26
- Specifications 15 26
- Electrical data 27
- Electrical specifications 27
- Specifications 27
- Specifications sibe28 804 27
- The table below contains the electrical specifications 27
- Sibe28 804 specifications 28
- Specifications 17 28
- Symbols 28
- Method of operating remote controller 6 30
- Part 3 remote controller 30
- Wired remote controller 0 30
- Wireless remote controller 4 30
- Brc1d52 type 31
- 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 31
- Features 31
- On leave home is enabled flashing leave home is active off leave home is disabled 31
- 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 31
- Remote controller 31
- Wired remote controller 31
- Wired remote controller sibe28 804 31
- Installation 33
- Down up 35
- Explanation of receiver 35
- Features 35
- Names and function 35
- On off 35
- Wireless remote controller 35
- Field setting mode service mode 37
- Inspection mode 37
- Method of operating remote controller 37
- Normal mode 37
- Test operation mode 37
- The following modes can be selected by using the inspection test operation button on the remote control 37
- The inspection test button 37
- 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 38
- Maintenance mode setting 38
- Procedure 38
- Service data confirmation 38
- 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 39
- Procedure 39
- 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 39
- Service mode setting 39
- Operation of the remote controller s inspection test operation button 40
- Remote controller 29 40
- Sibe28 804 method of operating remote controller 40
- Remote controller service mode 41
- Expansion valve regulating functions 8 42
- Frequency regulating functions 3 42
- General functionality 3 42
- Indoor unit functional concept 3 42
- Outdoor unit functional concept 1 42
- Part 4 functional description 42
- Outdoor unit fan speed control 1 43
- Functions of thermistors 44
- General functionality 44
- Functions of the thermistors 45
- Both the indoor and outdoor unit must be set to emergency while the power is off 46
- Emergency operation below table explains what will happen when the switch is set to emergency 46
- Ending conditions you can end the emergency operation by changing the emergency switch back to normal while the power is off 46
- Forced operating mode emergency operation 46
- How to set emergency operation 46
- Purpose the table below describes the purpose of the forced operating mode 46
- 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 46
- To set emergency operation proceed as follows 46
- Active components 47
- Additional info 47
- Be sure to set the emergency switch on both the outdoor and indoor unit 47
- Change the position of the emergency switch only when the power is turned off 47
- 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 47
- Emergency operation can not be carried out when the pc board itself is defective 47
- If a safety device is activated during emergency all actuators are turned off 47
- In cooling the unit runs for 20min and then stops for 10min in order to avoid freeze up of the indoor coil 47
- In heating defrost is activated for 3 minutes once every hour 47
- The unit will not regulate the temperature during emergency operation 47
- Operating modes the possible operating modes are 48
- Outdoor unit identification function 48
- 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 48
- Tc transmission circuit rc receiving circuit 48
- Used input the outdoor unit identification function uses the following inputs 48
- Simulated operation function 49
- Restart standby 50
- Rzq100 140c7 rzqs125 140c7 50
- Rzq71c7 rzqs71 100c7 50
- 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 50
- Automatic restart 51
- A b c d e f 52
- Applicable the remote control thermostat is only available in wired remote controls 52
- Condition the remote controller thermostat is not used when 1 the remote controller thermostat malfunctions 52
- Conditions the table below contains the condition in which the remote control thermostat is not used 52
- Cooling the diagram below shows the operation range of the set temperature air suction temperature combination in cooling operation 52
- Functional description 41 52
- Group control is used 3 the set temperature air suction temperature combination is out of range see below graph 52
- 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 52
- Sibe28 804 general functionality 52
- Using conditions for remote controller thermostat 52
- A b c d 53
- Functional description 53
- General functionality sibe28 804 53
- Heating the diagram below shows the operation range of the set temperature air suction temperature combination in heating operation 53
- 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 53
- 1 fhq only 54
- Cdb in heating mode the unit will conduct a forced thermostat off operation to protect the system 54
- Condition 1 cooling thermostat off due to freeze up prevention based on the judgment to prevent the indoor heat exchanger from freezing the thermostat is forcedly turned off 54
- Condition 2 heating thermostat off due to high outdoor temperature 54
- Forced thermostat off 54
- Freeze prevention function refer to p49 54
- Functional description 43 54
- Sibe28 804 general functionality 54
- The unit will perform the forced thermostat off function in following conditions 54
- Test run control 55
- Method the table below describes the 4 way valve control operation 56
- 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 56
- Time chart the time chart below illustrates the 4 way valve control 56
- Way valve control 56
- 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 57
- Cautions 57
- 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 57
- Pressing the pump down switch bs1 on the outdoor pcb may cause the outdoor and indoor fan to start operating automatically 57
- Procedure 57
- Pump down operation 57
- 5 c 40 minutes 2 hours 6 hours outdoor temperature 5 c 40 minutes 6 hours 8 hours 58
- Areas defrost upper limit a 58
- Defrost operation 58
- Defrost starting conditions defrost will start when the following conditions have been realized 58
- Functional description 47 58
- Integrated compressor running time is 25 minutes or more since the completion of the previous defrost operation 58
- Or defrost upper limit time a is met outdoor unit heat exchanger area temperature tb is within the defrost requesting area 58
- 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 58
- Rzq71 140c7 rzqs71 140c7v1b 58
- Sibe28 804 general functionality 58
- When quick defrost starting is set 16 26 3 03 58
- Defrost control 59
- Defrost ending conditions defrosting ends when the following conditions have been realized note that defrosting can be operated for 10 minutes at longest 59
- Functional description 59
- General functionality sibe28 804 59
- Rzq71 140c7 rzqs71 140c7v1b 59
- Rzq71c7 rzqs71 100c7 480 pls rzq100 140c7 rzq125 140c7 250 pls 59
- C for 10 minutes continuous 60
- Freeze prevention function 60
- Freeze prevention start conditions 60
- Freeze prevention start decided by the indoor unit factory setting 60
- Freeze prevention stop conditions 60
- Freeze prevention stop decided by the indoor unit factory setting 60
- Parameters 60
- 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 60
- 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 p99 60
- Pmv control 61
- Preheating operation control 62
- Crankcase heater control 63
- 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 64
- In dry operation 64
- In heating 64
- In normal operation in cooling 64
- Indoor unit functional concept 64
- 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 64
- T detected room temperature temperature set by remote controller tro room temperature detected when dry operation is started tr room temperature detected by thermistor 64
- Thermostat control 64
- 1 when changing over from on to off the residual operation is done for 5 minutes 65
- Cooling operation dry operation 65
- Drain pump control 65
- Excluding fcq 65
- Fcq normally drain pump on thermostat on off 65
- Functional description 65
- Heating operation 65
- Humidifier interlock equipped 65
- Humidifier interlock not equipped 65
- Indoor unit functional concept sibe28 804 65
- When the following condition consists by mounting the adaptor for wiring pc board and the humidifier the drain pump is turned on 65
- Condensation avoidance control 66
- Defrosting the time chart below illustrates the draft avoidance control 1 in defrosting 67
- Draft avoidance control 1 67
- Functional description 67
- Heating thermostat off the time chart below illustrates the draft avoidance control 1 in heating thermostat off 67
- Indoor unit functional concept sibe28 804 67
- 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 67
- 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 67
- Used inputs the draft avoidance control 1 uses the following inputs 67
- Cold air prevention control is finished 68
- Draft avoidance control 2 68
- Hot start is finished or 68
- Purpose the purpose of the draft avoidance control 2 is to avoid draft when the flap is moving 68
- Starting conditions the draft avoidance control 2 is activated when 68
- Time chart if the fan speed is set to h the fan turns at low speed for a certain amount of time 68
- Used input draft avoidance control 2 uses the following inputs 68
- Cooling operation the table below contains the fan and flap operations 69
- Fan and flap operation 69
- Heating operation the table below contains the fan and flap operations 69
- Ll operation on cassette type units 69
- Before compressor startup 70
- During compressor stop 70
- Indoor fan control at compressor startup 70
- Indoor fan control before compressor startup 70
- Indoor fan control during compressor stop 70
- Indoor unit fan control 70
- 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 70
- At compressor startup 71
- 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 71
- 1 only for trank shaped rzq100 140c7 rzqs125 140c7v1b 72
- Flow chart cooling dry operation 72
- Function outline in cooling mode 72
- Functional description 61 72
- Outdoor unit functional concept 72
- Sibe28 804 outdoor unit functional concept 72
- 1 only for trank shaped rzq100 140c7 rzqs125 140c7v1b 73
- Flow chart heating operation 73
- Function outline in heating mode 73
- Functional description 73
- Outdoor unit functional concept sibe28 804 73
- 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 74
- Frequency regulating functions 74
- General the normal starting control time is 2 3 minutes the maximum starting frequency control time is limited to 10 minutes 74
- 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 74
- Starting frequency control 74
- Frequency regulating functions sibe28 804 75
- Functional description 75
- Rzq71 140c7 rzqs71 140c7 75
- Starting control 75
- Starting control when compressor start up the starting frequency is fixed for specified period of time at low frequency to prevent returning of refrigerant 75
- General frequency control 76
- 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 77
- Maximum frequency in cooling maximum frequency in rzq rzqs71 77
- Functional description 67 78
- 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 78
- Low pressure protection control 78
- Rzq71c7 rzqs71 100c7v1b 78
- Sibe28 804 frequency regulating functions 78
- Frequency regulating functions sibe28 804 79
- Functional description 79
- Rzq100 140c7v1b 79
- When cooling operation when heating operation 79
- As the bearing resistance limit pressure decreases during slow operation of the compressor the lower limit of frequency is restricted 80
- Details the high pressure value will be calculated from the low pressure power input and compressor frequency in case of rzq100 140c7 rzqs125 140c7 low pressure is a calculated value 80
- Flow chart 80
- Functional description 69 80
- High pressure protection control 80
- Hps closes at 30 bar tolerance 0 5 80
- Hps opens at 40 bar tolerance 0 0 5 80
- I bar 39 bar 39 bar 80
- 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 80
- Parameters 80
- Rzq71c7 rzqs71 100c7v3b rzq100 140c7 rzqs125 140c7v1b a hz 118 hz 62 hz b hz 93 hz 62 hz c bar 32 bar 36 bar d bar 33 bar 37 bar e bar 39 bar 39 bar f bar 31 bar 36 bar g bar 29 bar 34 bar h bar 30 bar 35 bar 80
- Sibe28 804 frequency regulating functions 80
- Discharge pipe temperature control 81
- Flow chart 81
- Outline the compressor operating frequency will be controlled in order to avoid abnormal high compressor temperatures see also expansion valve control 81
- Parameters 81
- Td discharge pipe temperature 81
- Flow chart 82
- Functional description 71 82
- Lowering upper limit frequency for 1 step every 20 seconds 82
- Normal operation 82
- 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 82
- Raising upper limit frequency for 1 step every 20 seconds 82
- Sibe28 804 frequency regulating functions 82
- Suction pipe superheat protection control heating mode 82
- Control by inverter fin temperature 83
- Frequency regulating functions sibe28 804 83
- Functional description 83
- Inverter current protection control 83
- Pa 16 a 20 a qa 16 a 20 a 83
- Restricts compressor operation frequency to prevent compressor from tripping due to inverter overcurrent 83
- Restricts compressor operation upper limit frequency to prevent compressor from tripping due to inverter fin temperature 83
- Rzq71c7 rzqs71 100c7v1b rzq100 140c7 83
- Rzq71c7 rzqs71 100c7v1b rzq100 140c7 rzqs125 140c7v1b a 80 84 b 84 81 83
- Monitors the overall current and restricts the upper limit compressor operating frequency to prevent circuit breakers from exceeding the rated capacity 84
- Protection control by overall current 84
- Upper limit current a takes the following values depending on the outside temperature also varies depending on model 84
- 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 85
- Flow chart 85
- Inverter cooling fin temperature control 85
- 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 85
- Parameters 85
- C series rzq71 140c7 rzqs71 140c7v1b 86
- 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 86
- Fan control in cooling 86
- Functional description 75 86
- 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 86
- Pressure difference control 86
- Sibe28 804 frequency regulating functions 86
- Frequency regulating functions sibe28 804 87
- Frequency restriction in cooling 87
- Functional description 87
- Rzq100 140c7 rzqs125 140c7v1b 87
- Rzq71c7 rzqs71 100c7v1b 87
- 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 88
- Functional description 77 88
- Heating high outdoor ambient overload conditions 88
- In heating overload conditions the outdoor fan speed will be adapted to secure the differential pressure between high and low pressure 88
- Oil recovery operation 88
- Only the fan speed will be adapted in heating overload conditions no adjustments to the compressor frequency will be made 88
- 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 88
- Rzq100 140c7 rzqs125 140c7v1b 88
- Rzq71c7 rzq71 100c7v1b 88
- Sibe28 804 frequency regulating functions 88
- Expansion valve control at startup 89
- Expansion valve regulating functions 89
- General expansion valve control 90
- Details 91
- Discharge pipe temperature protection control 91
- Expansion valve regulating functions sibe28 804 91
- Functional description 91
- Outline the expansion valve opening will be controlled in order to avoid abnormal high compressor discharge temperatures see also compressor operating frequency control 91
- Rzq71 140c7 rzqs71 140c7v1b 91
- 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 92
- Fan step table rzq100 140c7 92
- Fan step table rzq71c7 92
- For details please refer to pressure difference control 92
- Note refer to pressure difference control on p75 refer to defrost operation on p47 92
- Outdoor unit fan speed control 92
- Rzqs71 100c7v1b 92
- Field settings 9 94
- Part 5 test operation 94
- Test operation 4 94
- Test run and operation data 16 94
- Before carrying out a test run proceed as follows 95
- Check that the temperature setting of the remote controller is at the lowest level in cooling mode or use test mode 95
- Checks before test run 95
- Go through the following checklist 95
- Test operation 95
- Test run checks 95
- To carry out a test run check the following 95
- Introduction to set the wireless remote controller you have to set the address for 96
- S m s m 96
- Setting the address for the receiver 96
- Setting the wireless remote controller 96
- The address for the receiver of the wireless remote controller is factory set to 1 to change this setting proceed as follows 96
- The receiver of the wireless remote controller 96
- The wireless remote controller 96
- Setting the address for the wireless remote controller 97
- The address for the wireless remote controller is factory set to 1 to change this setting proceed as follows 97
- 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 99
- Press the test button to quit the field set mode and return to the normal display step action 99
- Test operation 99
- Test operation sibe28 804 99
- Components the table below contains the components of the wired remote controller 100
- Field settings 100
- How to change the field settings with the wired remote controller 100
- Installation conditions the field settings have to be changed with the remote controller according to the installation conditions 100
- Sibe28 804 field settings 100
- Test operation 89 100
- The illustration below shows the wired remote controller 100
- Wired remote controller brc1d527 100
- First code no 101
- Mode no 101
- Second code no 101
- Setting to set the field settings you have to change 101
- To change the field settings proceed as follows 101
- First code no 102
- How to change the field settings with the wireless remote controller 102
- Mode no 102
- Optional accessories if optional accessories are mounted on the indoor unit the indoor unit setting may have to be changed 102
- Refer to oh08 1 or the installation manual optional handbook for each optional accessory 102
- Second code no 102
- Setting to set the field settings you have to change 102
- To change the field settings proceed as follows 102
- Wireless remote controller the illustration below shows the wireless remote controller 102
- Field settings the table below contains the possible field settings of all indoor units 103
- Overview of the field settings on the indoor units 103
- Factory settings the table below contains the factory settings of all indoor units 104
- Overview of the factory settings on the indoor units 104
- Main sub setting when using two remote controllers 105
- 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 105
- 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 105
- Field set mode 106
- First code n second code n 106
- 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 106
- Mode n 106
- Setting the centralized group no 106
- Setting to set the centralized group no proceed as follows 106
- Unit n 106
- 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 106
- Wired remote controller the illustration below shows the wired remote controller 106
- Field settings sibe28 804 107
- Inspection level 107
- Introduction the three field setting levels are 107
- Maintenance mode settings 107
- Monitoring level 107
- Test operation 107
- The field setting levels 107
- The flow chart below explains the different windows of the inspection level 107
- 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 107
- Changing the mode settings to enter the monitoring level and to change the maintenance mode settings proceed as follows 108
- 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 108
- Maintenance mode settings the table below describes the maintenance mode settings 109
- Factory settings the table below contains the factory settings of all outdoor units 110
- Jumpers the table below contains the jumper field settings 110
- Location on pcb a1p see drawing on next page 110
- Overview of the factory settings on the outdoor units 110
- Overview of the field settings on the outdoor units 110
- Remote controller settings 110
- The table below contains the remote controller settings 110
- Existence of dip switch and bs button 111
- Factory settings off and heat 111
- 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 111
- Rzq71 140c7v1b rzqs71 140c7v1b 111
- Various settings are available by using the dip switches and the bs buttons on the printed circuit board display pc board a2p 111
- A setting mode 1 112
- Monitor mode this mode indicates oil return operation outdoor unit class contents of retry contents of malfunction causes of stepping down operation etc 112
- Setting by bs buttons with setting mode 1 setting mode 2 and monitor mode various settings and data can be checked 112
- 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 112
- Setting mode 2 each operating status can be modified 112
- Sibe28 804 field settings 112
- Test operation 101 112
- 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 112
- B setting mode 2 113
- In this mode settings for the following items can be made by using bs buttons 113
- 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 113
- The figures in the columns under no represent the number of times to push the set bs2 button 113
- Work procedure 113
- 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 114
- 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 114
- 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 114
- 1 2 3 4 5 6 7 10 115
- 7 7 7 7 7 7 7 7 115
- 7 7 7 7 7 7 7 8 115
- 7 7 7 8 8 8 8 7 115
- 7 8 8 7 7 8 8 8 115
- 8 7 8 7 8 7 8 7 115
- 9 9 9 9 9 9 9 9 115
- C monitor mode 115
- In this mode the following items can be checked by using the bs buttons 115
- D list of contents of retry and malfunction 116
- Push the return bs3 button to return the system to the initial state of monitor mode 116
- Push the set bs2 button to set the led display to retry or malfunction item 116
- Pushing the mode bs1 button will bring the system to the setting mode 1 116
- Sibe28 804 field settings 116
- Take the following steps to check contents of retry and malfunction 116
- Test operation 105 116
- To enter monitor mode push the mode bs1 button when in setting mode 1 116
- When set bs2 button is pushed the led display for return 2 turns on 116
- When set bs2 button is pushed the led display for return 3 turns on 116
- When the return bs3 button is pushed the led display for return 1 turns on 116
- Capacity precedence setting 117
- 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 117
- Purpose lower the operation sound of the outdoor unit 117
- Quiet low noise operation 117
- Quiet low noise operation by automatic control 117
- Setting silent operation can be activated by 1 automatic control by field setting from remote controller 2 external activation from optional pc board krp58m 117
- Table silent operation can be set by field setting from the wired remote controller 117
- 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 117
- 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 118
- Defrost operation 118
- Exceptions the quiet low noise operation will be overruled in the following conditions 118
- External activation from optional pc board 118
- Graph quiet low noise operation can also be activated from the optional pc board 118
- Oil recovery 118
- Output on x801m 12vdc 12ma maximum wire length 100 meter 118
- Power supply connector on outdoor pcb x77a 118
- Pump down residual operation 118
- 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 118
- Sound reduction 118
- Startup control 118
- Transmission connector on outdoor pc board x6a 118
- I demand function 119
- Demand 1 power consumption limitation in function of setting on ds1 120
- Demand 2 power consumption limitation set to 40 120
- Demand 3 forced thermostat off 120
- Setting for low humidity application 121
- Function details 122
- Parameters 122
- Graph 1 target evaporating temperature control in case of factory setting 16 26 2 01 123
- Graph 2 target evaporating temperature control when low humidity application is selected field setting 16 26 2 03 124
- 2 c for 5 minutes continuously 125
- C no change from standard setting 125
- Change thermostat control 125
- Graph 3 target evaporating temperature control when low humidity application freeze up operation prevention is selected field setting 16 26 2 04 125
- 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 04 125
- Thermostat off 125
- Thermostat on 125
- Capacity when low humidity application freeze up operation prevention is selected field setting 16 26 2 04 126
- Capacity when low humidity application is selected field setting 16 26 2 03 126
- Defrost start setting 126
- 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 126
- Refer to defrost operation on p47 126
- General operation data 127
- Guide lines for optimal operation condition 127
- Indoor unit fan h operation compressor rated frequency 127
- Test run and operation data 127
- 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 127
- 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 128
- Standard conditions 128
- When perfoming maintenance you should at least perform the following inspections 128
- Correlation of air conditioner s operation status and pressure running current 129
- Dirt in the refrigerant clogs filters inside the piping and is basically the same phenomenon as pump down 129
- Pressure differential between high and low pressure becomes low 129
- Water in the refrigerant freezes inside the capillary tube or expansion valve and is basically the same phenomenon as pump down 129
- What happens in comparison to normal values is summarized in the table below measured from 15 20 minutes or more after operation starts 129
- When cooling 129
- When heating 129
- Air flow rate high 130
- Conditions the illustrations in this section are based on the following conditions 130
- Equivalent piping length 7 m 130
- Level difference 0 m 130
- 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 130
- Operation range 130
- Operation range cooling the illustration below shows the operation range 130
- Operation range heating the illustration below shows the operation range 130
- Rzq series rzqs series 130
- Sibe28 804 test run and operation data 130
- Test operation 119 130
- How to handle request for maintenance 23 132
- Part 6 troubleshooting 132
- Procedure of self diagnosis by remote controller 44 132
- Troubleshooting based on equipment condition 24 132
- Troubleshooting by led indications 52 132
- Troubleshooting by remote controller display led display 54 132
- Find out the situation according to the following procedure when there is a request for service from the customer 134
- General troubleshooting flowchart 134
- How to handle request for maintenance 134
- Sibe28 804 how to handle request for maintenance 134
- Troubleshooting 123 134
- Overview 135
- Overview of general problems 135
- Troubleshooting based on equipment condition 135
- Equipment does not operate 136
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 137
- Troubleshooting 137
- Troubleshooting based on equipment condition sibe28 804 137
- Indoor fan operates but compressor does not 138
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 139
- Troubleshooting 139
- Troubleshooting based on equipment condition sibe28 804 139
- Cooling heating operation starts but stops immediately 140
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 141
- Troubleshooting 141
- Troubleshooting based on equipment condition sibe28 804 141
- After unit shuts down it cannot be restarted for a while 142
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 143
- Troubleshooting 143
- Troubleshooting based on equipment condition sibe28 804 143
- Equipment operates but does not provide cooling 144
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 145
- Troubleshooting 145
- Troubleshooting based on equipment condition sibe28 804 145
- Equipment operates but does not provide heating 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 sibe28 804 147
- Applicable model all models of skyair series 148
- Clogged air filter 148
- Equipment discharges white mist 148
- Error detection method 148
- Error generating condition 148
- Humid installation site 148
- Installation site is dirty and with dense oil mists 148
- Malfunction of fan motor 148
- Sibe28 804 troubleshooting based on equipment condition 148
- Soiled heat exchanger 148
- Supposed causes 148
- Troubleshooting 148
- Troubleshooting 137 148
- Equipment produces loud noise or shakes 149
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 150
- Sibe28 804 troubleshooting based on equipment condition 150
- Troubleshooting 150
- Troubleshooting 139 150
- Animal s hair 151
- Applicable model all models of skyair series 151
- Application cloth shop 151
- Carpet 151
- Equipment discharges dust 151
- Error detection method 151
- Error generating condition 151
- Supposed causes 151
- Troubleshooting 151
- Troubleshooting based on equipment condition sibe28 804 151
- Applicable model all models of skyair series 152
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 152
- Error detection method 152
- Error generating condition 152
- Remote controller lcd displays 88 152
- Sibe28 804 troubleshooting based on equipment condition 152
- Supposed causes 152
- Troubleshooting 152
- Troubleshooting 141 152
- Swing flap does not operate 153
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 154
- Sibe28 804 troubleshooting based on equipment condition 154
- Troubleshooting 154
- Troubleshooting 143 154
- Inspection mode 155
- Local setting mode 155
- Normal mode 155
- Procedure of self diagnosis by remote controller 155
- Service mode 155
- Test operation mode 155
- The following modes can be selected by using the inspection test operation button on the remote control 155
- The inspection test button 155
- Fault diagnosis by wired remote controller 156
- Checking to find the error code proceed as follows 157
- Fault diagnosis by wireless remote controller 157
- 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 157
- Remote controller display malfunction code and contents 161
- 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 162
- 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 162
- Troubleshooting by led indications 163
- Troubleshooting by led on the indoor units 163
- Troubleshooting by led on outdoor unit pc board 164
- Explanation for symbols 5 led blinks 4 led on 7 led off no connection with troubleshooting 165
- High probability of malfunction 165
- Indoor malfunctions 165
- Low probability of malfunction no possibility of malfunction do not replace 165
- Possibility of malfunction 165
- Troubleshooting by remote controller display led display 165
- Notes 1 possibility of open phase in power supply 166
- Outdoor malfunctions 166
- System malfunctions 167
- Overview of the outdoor safety devices 168
- Overview of the indoor safety devices 169
- A1 malfunctioning indoor pc board 170
- A3 malfunction of drain water level system 171
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 172
- Note if a3 is detected by a pc board which is not mounted with x15a the pc board is defective 172
- Sibe28 804 troubleshooting by remote controller display led display 172
- Troubleshooting 172
- Troubleshooting 161 172
- A6 indoor unit fan motor lock 173
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 174
- Sibe28 804 troubleshooting by remote controller display led display 174
- Troubleshooting 174
- Troubleshooting 163 174
- A7 swing flap motor malfunction lock 175
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 176
- Sibe28 804 troubleshooting by remote controller display led display 176
- Troubleshooting 176
- Troubleshooting 165 176
- A8 abnormal power supply voltage 177
- Af malfunctioning drain system 178
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 179
- Troubleshooting 179
- Troubleshooting by remote controller display led display sibe28 804 179
- Aj malfunctioning capacity setting 180
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 181
- Troubleshooting 181
- Troubleshooting by remote controller display led display sibe28 804 181
- C1 failure of transmission between indoor unit pc board and fan pc board 182
- After confirmation turn off the power take off the short circuit and connect x70a back to original condition 183
- Determination 01 normal other than 01 transmission defect on indoor pc board 183
- Method to check transmission part of indoor pc board turn off the power and remove the connecter x70a of indoor pc board a1p short circuit x70a after turning on the power check below numbers under local setting remote control confirmation setting position no at the condition of setting switch no 21 on mode no 41 183
- Pull out and insert the connecter once and check it is absolutely connected 183
- Troubleshooting 183
- Troubleshooting by remote controller display led display sibe28 804 183
- C4 c9 thermistor abnormality 184
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 185
- Troubleshooting 185
- Troubleshooting by remote controller display led display sibe28 804 185
- C6 failure of combination between indoor unit pc board and fan pc board 186
- Cj malfunctioning remote controller air thermistor 187
- Cc humidity sensor system malfunction 188
- E1 failure of outdoor unit pc board 189
- E3 abnormal high pressure detected by the hps 190
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 191
- Troubleshooting 191
- Troubleshooting by remote controller display led display sibe28 804 191
- E4 actuation of low pressure sensor single phase c series 192
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 193
- Troubleshooting 193
- Troubleshooting by remote controller display led display sibe28 804 193
- E5 compressor motor lock 194
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 195
- Troubleshooting 195
- Troubleshooting by remote controller display led display sibe28 804 195
- E7 malfunction of outdoor unit fan motor 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 sibe28 804 197
- Sibe28 804 troubleshooting by remote controller display led display 198
- Troubleshooting 187 198
- E9 malfunction of electronic expansion valve 199
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 200
- Sibe28 804 troubleshooting by remote controller display led display 200
- Troubleshooting 200
- Troubleshooting 189 200
- Troubleshooting 201
- Troubleshooting by remote controller display led display sibe28 804 201
- F3 malfunctioning in discharge pipe temperature 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 sibe28 804 203
- Applicable models rzq s 71 140 204
- Disconnected lead wire 204
- Disconnection in high pressure switch harness 204
- Faulty connection of high pressure switch connector 204
- Faulty outdoor unit pc board 204
- H3 malfunctioning hps system 204
- Incomplete high pressure switch 204
- Malfunction decision conditions 204
- Method of malfunction detection 204
- Remote controller display 204
- Sibe28 804 troubleshooting by remote controller display led display 204
- Supposed causes 204
- The protection device circuit checks continuity in the high pressure switch 204
- Troubleshooting 204
- Troubleshooting 193 204
- When there is no continuity in the high pressure switch during compressor stops operating 204
- Abnormality is detected according to the temperature detected by each individual thermistor 205
- Applicable models rzq s 71 140 205
- Faulty connection of connector 205
- Faulty outdoor unit pc board control pc board 205
- Faulty thermistor 205
- H9 j3 j5 j6 j7 j8 205
- H9 j3 j5 j6 j7 j8 malfunction of thermistor system 205
- Malfunction decision conditions 205
- Method of malfunction detection 205
- Refer to p228 229 for thermistor temperature resistance characteristics 205
- Remote controller display 205
- Supposed causes 205
- Troubleshooting 205
- Troubleshooting by remote controller display led display sibe28 804 205
- When thermistor is disconnected or short circuited during operation 205
- J1 malfunction of pressure sensor 206
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 207
- Check if the connector for the pressure sensor x17a is correctly connected to the outdoor unit pc board a1p 207
- Connect correctly 207
- Detected pressure 207
- Measure the voltage v between the pins 2 and 3 of the above connector 1 207
- No is it connected correctly 207
- Replace the pressure sensor s1nph 207
- Troubleshooting 207
- Troubleshooting by remote controller display led display sibe28 804 207
- Yes replace outdoor unit pc board a1p 207
- L1 faulty outdoor pc board 208
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 209
- Troubleshooting 209
- Troubleshooting by remote controller display led display sibe28 804 209
- L4 radiation fin temperature increased 210
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 211
- Troubleshooting 211
- Troubleshooting by remote controller display led display sibe28 804 211
- L5 dc output overcurrent instantaneous 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 sibe28 804 213
- L8 electronic thermal time lag 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 remote controller display led display sibe28 804 215
- L9 stall prevention time lag 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 remote controller display led display sibe28 804 217
- Lc malfunction of transmission system between control and inverter pc board 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 remote controller display led display sibe28 804 219
- P1 open phase or power supply voltage imbalance 220
- Applicable models rzq s 71 140 221
- Detection by open or short circuit of the radiator fin temperature thermistor during the compressor stops operating 221
- Faulty outdoor unit pc board 221
- Faulty radiator fin temperature thermistor 221
- Malfunction decision conditions 221
- Method of malfunction detection 221
- P4 malfunction of radiator fin temperature thermistor 221
- Refer to p228 229 for thermistor temperature resistance characteristics 221
- Remote controller display 221
- Supposed causes 221
- Troubleshooting 221
- Troubleshooting by remote controller display led display sibe28 804 221
- When open or short circuit of the radiator fin temperature thermistor is detected during the compressor stops operating 221
- Pj failure of capacity setting 222
- U0 gas shortage malfunction 223
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 224
- Sibe28 804 troubleshooting by remote controller display led display 224
- Troubleshooting 224
- Troubleshooting 213 224
- U2 abnormal power supply voltage 225
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 226
- Sibe28 804 troubleshooting by remote controller display led display 226
- Troubleshooting 226
- Troubleshooting 215 226
- U4 uf malfunction of transmission between indoor and outdoor unit 227
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 228
- Sibe28 804 troubleshooting by remote controller display led display 228
- Troubleshooting 217 228
- 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 228
- Troubleshooting 229
- Troubleshooting by remote controller display led display sibe28 804 229
- Applicable models rzq s 71 140 230
- 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 230
- Clogged refrigerant piping system 230
- Faulty inter unit wiring between the indoor and outdoor units 230
- Malfunction decision conditions 230
- Method of malfunction detection 230
- Mismatching of wiring and piping 230
- Refrigerant shortage out of gas 230
- Remote controller display 230
- Sibe28 804 troubleshooting by remote controller display led display 230
- Supposed causes 230
- Troubleshooting 230
- Troubleshooting 219 230
- Uf malfunction of transmission between indoor and outdoor unit piping and wiring mismatch gas shortage 230
- ºc 24ºc during heating operation 230
- Applicable models all models of indoor units 231
- Connection of two master remote controllers when using two remote controllers 231
- 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 231
- Malfunctioning indoor pc board 231
- Malfunctioning remote controller 231
- Outside cause noise 231
- Remote controller display 231
- Supposed causes the possible causes are 231
- Troubleshooting 231
- Troubleshooting by remote controller display led display sibe28 804 231
- U5 malfunction of transmission between indoor unit and remote controller 231
- Applicable models all models of indoor units 232
- Connection among sub remote controllers 232
- 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 232
- Malfunctioning remote controller pc board 232
- Remote controller display 232
- Sibe28 804 troubleshooting by remote controller display led display 232
- Supposed causes the possible causes are 232
- Transmission error between main remote controller and sub remote controller 232
- Troubleshooting 232
- Troubleshooting 221 232
- U8 malfunction of transmission between main remote controller and sub remote controller 232
- Ua malfunctioning field setting switch 233
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 234
- Sibe28 804 troubleshooting by remote controller display led display 234
- Troubleshooting 234
- Troubleshooting 223 234
- Uc centralized address setting error 235
- Check no 236
- Checking to check the installation condition proceed as follows 236
- Outdoor unit checking the installation condition 236
- Sibe28 804 troubleshooting by remote controller display led display 236
- Troubleshooting 225 236
- Check no 237
- Checking to check the electronic expansion valve proceed as follows 237
- Outdoor unit checking the expansion valve 237
- Check no 238
- Checking the thermistors 238
- Checking to check the thermistors proceed as follows 238
- For more information about these thermistors see 238
- Functions of thermistors on p33 238
- Overview of thermistors the table below contains an overview of the thermistors 238
- Thermistors if the cause of the problem is related to the thermistors then the thermistors should be checked prior to changing the pc board 238
- Wiring diagrams outdoor units 238
- Applicable sensors a indoor suction air coil outdoor ambient coil pipe without discharge 239
- B outdoor fin 239
- Check no 239
- Resistance conversion table ambient coil fin 239
- Temperature resistance the table below is the thermistor indoor suction air coil outdoor ambient coil pipe without discharge fin temperature resistance conversion table 239
- Check no 240
- Resistance conversion table discharge pipe sensor 240
- Temperature resistance the table below is the discharge pipe thermistor temperature resistance conversion table 240
- 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 241
- Check no 241
- Evaluation of abnormal high pressure 241
- In cooling operation 241
- In heating operation 241
- 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 242
- Check no 242
- Evaluation of abnormal low pressure 242
- In cooling operation 242
- In heating operation 242
- Check no 243
- Clogged points 243
- Temperature differences must occur before or after the clogged points 243
- 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 244
- Check no 244
- For rzq s 71 140 models 244
- Outdoor unit fan motor signal line 244
- And continuity may be reversed 246
- Check no 1 246
- If a digital tester is used for the measurement of continuity 246
- If there is continuity the resistance should be the same as each phase 246
- 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 246
- Outdoor unit check for power transistor 246
- Power transistor on inverter pc board 246
- 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 248
- Sibe28 804 troubleshooting by remote controller display led display 248
- Troubleshooting 237 248
- As criteria for judging whether refrigerant is excessively charged or not refer to the following operating conditions 249
- Check for excessive refrigerant charging 249
- Check no 4 249
- 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 249
- Troubleshooting 249
- Troubleshooting by remote controller display led display sibe28 804 249
- Check for factors causing wet operation check no 5 250
- Dimensions 42 252
- Installation and service space rzq100 140c7 rzqs125 140c7 44 252
- Part 7 appendix 252
- Pcb layout 64 252
- Piping diagrams 46 252
- Switch box layout 62 252
- Wiring diagrams 60 252
- Components 253
- Dimensions 253
- Outlook and dimensions 253
- Rzq71c7 rzqs71 100c7v1b 253
- The illustration below shows the outlook and the dimensions of the unit mm 253
- The table below contains the different components of the unit 253
- Components 254
- Outlook and dimensions 254
- Rzq100 140c rzqs125 140c7v1b 254
- The illustration below shows the outlook and the dimensions of the unit mm 254
- The table below contains the different components of the unit 254
- Installation and service space rzq100 140c7 rzqs125 140c7 255
- Non stacked 255
- The illustrations and table below show the required installation and service space mm the values between brackets are for rzq100 140c7 rzqs125 140c7 class 255
- 100 mm is required as the dimension for laying the upper outdoor unit s drain pipe 256
- Do not stack more than one unit 256
- Get the portion a sealed so that air from the outlet does not bypass 256
- Multiple rows 256
- Relation of dimensions of h a and l are shown in the table below 256
- Stacked 256
- The illustration below shows the required installation and service space mm the values in brackets are for rzq100 140 rzqs125 140 class 256
- The illustration below shows the required installation and service space mm the values in brackets are for the 100 140 class 256
- Components the table below contains the different components of the piping diagrams 257
- Piping diagrams 257
- Piping symbol 257
- Note piping symbol number refer to p246 258
- Pair system 258
- Rzq71c7 rzqs71 100c7v1b 258
- Appendix 259
- Note piping symbol number refer to p246 259
- Piping diagrams sibe28 804 259
- Rzq100 140c7 rzqs125 140c7v1b 259
- Note piping symbol number refer to p246 260
- Rzq71c7 rzqs71 100c7v1b 260
- Twin system 260
- Appendix 261
- Note piping symbol number refer to p246 261
- Piping diagrams sibe28 804 261
- Rzq100 140c7 rzqs125 140c7v1b 261
- Appendix 251 262
- Note piping symbol number refer to p246 262
- Rzq100 140c7 rzqs125 140c7v1b 262
- Sibe28 804 piping diagrams 262
- Triple system 262
- Appendix 263
- Double twin system 263
- Note piping symbol number refer to p246 263
- Piping diagrams sibe28 804 263
- Rzq100 140c7 rzqs125 140c7v1b 263
- Outdoor units the table below contains the refrigerant pipe connection diameters 264
- Pipe connection diameters 264
- Caution 265
- How to re use existing piping 265
- If copper piping is corroded existing piping re use is not allowed 265
- In all circumstances where these conditions can not be fully met new piping has to be installed 265
- Introduction 265
- Notes oil contamination can be checked using the daikin oil checker card 265
- Re using existing field piping 265
- Rzqs can not be reused 265
- See further notes in this section for twin triple and double twin applications 265
- Single side thermal insulation is not allowed for re use 265
- When installing a system using an rzq outdoor unit existing or pre installed piping can be used according to below specified conditions 265
- Appendix 255 266
- Branch piping l2 l7 can be re used but standard pipe size only 266
- Check welded connections for gas leaks if the local piping has welded connections 266
- Construction material phosphoric acid deoxidized seamless copper for refrigerant 266
- 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 266
- Main piping l1 can be re used size up size down is allowed see further in this section for restrictions 266
- Make sure all installation tools are designed for use on r 410a refrigerant to withstand the pressure 266
- Notes for twin triple and double twin 266
- 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 266
- Precautions on refrigerant piping 266
- Re use of branch piping is not allowed 266
- Selection of piping material 266
- Sibe28 804 piping diagrams 266
- Temper grade use piping with temper grade in function of the pipe diameter as listed in table below 266
- 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 266
- Use r 410a only when adding refrigerant 266
- 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 266
- 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 267
- Pipe size down and pipe size up is available for main piping l1 only 267
- Refrigerant pipe size 267
- Allowable pipe length and heigth difference 268
- When re using existing piping refer to below table for allowable piping length and heigth difference figures in brackets are equivalent lengths 268
- After completing the installation carry out an inspection of the piping connections by pressure test using nitrogen 270
- Caution for flare connections 270
- Refer to below table for correct flare dimensions and tightening torques too high tightening force may cause refrigerant leak because of flare cracking 270
- 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 270
- Outdoor unit 271
- Rzq71c7 rzqs71 100c7v1b 271
- The illustration below shows the wiring diagram of the unit 271
- Wiring diagrams 271
- Appendix 261 272
- Rzq100 140c7 rzqs125 140c7v1b 272
- Sibe28 804 wiring diagrams 272
- The illustration below shows the wiring diagram of the unit 272
- Appendix 273
- Rzq71c7 rzqs71 100c7v1b 273
- Switch box layout 273
- Switch box layout sibe28 804 273
- The illustration below shows the switch box layout 273
- Rzq100 140c7 rzqs125 140c7v1b 274
- The illustration below shows the switch box layout 274
- Appendix 275
- Connectors the table below describes the pc board connectors 275
- Control pc board a1p the illustration below shows the pc board connectors 275
- Pcb layout 275
- Pcb layout sibe28 804 275
- Rzq71c7 rzqs71 100c7v1b 275
- Appendix 265 276
- Connectors the table below describes the pc board connectors 276
- Control inverter pc board a1p the illustration below shows the pc board connectors 276
- Rzq100 140c7 rzqs125 140c7v1b 276
- Sibe28 804 pcb layout 276
- X107a x111a 276
- X28a x51a x77a 276
- Part 8 removal procedure 278
- Rzq100 140c7 rzqs125 140c7v1b 78 278
- Rzq71c7 rzqs71 100c7v1b 68 278
- Removal of outside panels and related parts 279
- Rzq71c7 rzqs71 100c7v1b 279
- Removal of propeller fan and fan motor 280
- Removal of switch box 281
- Removal of pc board assy 1 282
- Removal of pc board assy 2 283
- Removal of pc board assy 3 284
- Removal of low pressure sensor electronic expansion valve and others 285
- Removal of thermistor 286
- Removal of four way valve 287
- Removal of compressor 288
- Removal of outside panels 289
- Rzq100 140c7 rzqs125 140c7v1b 289
- Removal of propeller fan and fan motor 290
- Removal of switch box 291
- Removal of pc board 292
- Removal of pressure sensor electronic expansion valve and others 293
- Removal of thermistor 294
- Removal of four way valve 295
- Removal of compressor 296
- Part 9 298
- Part 9 precautions for new refrigerant r 410a 298
- Precautions for new refrigerant r 410a 298
- Precautions for new refrigerant r 410a 88 298
- About refrigerant r 410a 299
- 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 299
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 299
- Outline 299
- Precautions for new refrigerant r 410a 299
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 299
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 299
- Precautions for new refrigerant r 410a 289 300
- Sibe28 804 precautions for new refrigerant r 410a 300
- Thermodynamic characteristic of r 410a 300
- Refrigerant cylinders 301
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 302
- Copper tube material and thickness 302
- Material 302
- O o o o 1 2h 302
- O o o o o 302
- O soft annealed h hard drawn 302
- Pipe size 302
- R 407c 302
- R 410a 302
- 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 302
- Service tools 302
- Thickness t mm 0 0 0 1 1 302
- Tool compatibility 302
- Φ 6 φ 9 φ 12 φ 15 φ 19 302
- 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 303
- Differences 2 change of dimension a 303
- Flaring tool 303
- Specifications 2 dimension a 303
- Unit mm 303
- Numerics 308
- Drawings flow charts 312
- 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 314
- Cautions on product corrosion 314
- 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 314
- Http www daikin com global_ac 314
- If you have any enquiries please contact your local importer distributor and or retailer 314
- Printed in japan 05 2008 ak 314
- 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 314
- 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 314
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