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Daikin REYQ48MY1B [218/312] Malfunction of transmission between outdoor units
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Si39-302 Troubleshooting by Indication on the Remote Controller
Troubleshooting 207
2.44
“
U7
”
Malfunction of Transmission Between Outdoor Units
Remote
Controller
Display
U7
Applicable
Models
All models of indoor units
Method of
Malfunction
Detection
Microcomputer checks if transmission between indoor unit and remote controller is normal.
Malfunction
Decision
Conditions
When transmission is not carried out normally for a certain amount of time
Supposed
Causes
!
Improper connection of transmission wiring between outdoor unit and outdoor unit outside
control adaptor
!
Improper cool/heat selection
!
Improper cool/heat unified address (outdoor unit, external control adaptor for outdoor unit)
!
Defect of outdoor unit PC board (A1P)
!
Defect of outdoor unit outside control adaptor
!
Improper connection of transmission wiring between outdoor units of multi outdoor unit
connection.
Содержание
- Combination of outdoor units 4 model selection 2
- Functional parts layout 8 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Operation mode 4 2 basic control 5 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 refrigerant circuit 1 2
- Part 4 function 3 2
- R410a heat pump 50hz 2
- R410a heat pump 50hz i 2
- Refrigerant circuit 2 2
- Refrigerant flow for each operation mode 1 2
- Special control 4 2
- Specifications 0 2
- Table of contents 2
- Other control 8 3
- Outdoor unit pc board layout 04 3 field setting 05 3
- Outline of control indoor unit 2 3
- Part 5 test operation 9 3
- Part 6 troubleshooting 41 3
- Protection control 3 3
- Test operation 00 3
- Troubleshooting by indication on the remote controller 56 3
- Troubleshooting by remote controller 43 3
- List of electrical and functional parts 63 5
- Option list 70 5
- Part 7 replacement procedure for inv compressor 5
- Part 8 appendix 41 5
- Piping diagrams 42 5
- Replacement procedure for inv compressor vrv ii rxyq5m 48m 40 5
- Troubleshooting op central remote controller 18 5
- Troubleshooting op schedule timer 24 5
- Troubleshooting op unified on off controller 31 5
- Vrv ii rxyq5m to 48m 39 5
- Wiring diagrams for reference 46 5
- Drawings flow charts v 6
- Index i 6
- Part 9 precautions for new refrigerant r410 85 6
- Piping installation point 73 6
- Precautions for new refrigerant r410 86 6
- Selection of pipe size joints and header 75 6
- Thermistor resistance temperature characteristics 80 8 pressure sensor 82 9 method of replacing the inverter s power transistors and diode modules 83 6
- Caution in repair 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Cautions regarding products after repair 8
- Warning 8
- Caution 9
- Inspection after repair 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Using icons 10
- Using icons list 10
- Preface 11
- Part 1 general information 12
- 220 240v 50hz 13
- 380 415v 50hz 13
- Indoor units 13
- Model names of indoor outdoor units 13
- Outdoor units inverter series 13
- V 60hz y1b 13
- External appearance 14
- Indoor units 14
- Outdoor units 15
- 48hp are realized by combining 8 10 12 14 and 16hp 16
- Combination of outdoor units 16
- Connectable indoor units number and capacity 17
- General information 17
- Model selection 17
- Model selection si39 302 17
- Vrv ii heat pump series 17
- Connectable indoor unit 18
- In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 18
- Indoor unit capacity 18
- The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 18
- Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw 18
- Part 2 specifications 20
- Specifications 0 20
- Outdoor units 21
- Specifications 21
- Specifications si39 302 21
- Si39 302 specifications 22
- Specifications 11 22
- Specifications 23
- Specifications si39 302 23
- Si39 302 specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si39 302 25
- Si39 302 specifications 26
- Specifications 15 26
- Specifications 27
- Specifications si39 302 27
- Si39 302 specifications 28
- Specifications 17 28
- Specifications 29
- Specifications si39 302 29
- Si39 302 specifications 30
- Specifications 19 30
- Specifications 31
- Specifications si39 302 31
- Ceiling mounted cassette type double flow 32
- Indoor units 32
- Si39 302 specifications 32
- Specifications 21 32
- Ceiling mounted cassette type double flow 33
- Specifications 33
- Specifications si39 302 33
- Ceiling mounted cassette type multi flow 600 600 34
- Si39 302 specifications 34
- Specifications 23 34
- Ceiling mounted cassette type multi flow 600 600 35
- Specifications 35
- Specifications si39 302 35
- Ceiling mounted cassette type multi flow 36
- Si39 302 specifications 36
- Specifications 25 36
- Ceiling mounted cassette type multi flow 37
- Specifications 37
- Specifications si39 302 37
- Ceiling mounted cassette corner type 38
- Si39 302 specifications 38
- Specifications 27 38
- Ceiling mounted built in type 39
- Specifications 39
- Specifications si39 302 39
- Ceiling mounted built in type 40
- Si39 302 specifications 40
- Specifications 29 40
- Ceiling mounted built in type 41
- Specifications 41
- Specifications si39 302 41
- Ceiling mounted duct type 42
- Si39 302 specifications 42
- Specifications 31 42
- Ceiling mounted duct type 43
- Specifications 43
- Specifications si39 302 43
- Ceiling suspended type 44
- Si39 302 specifications 44
- Specifications 33 44
- Specifications 45
- Specifications si39 302 45
- Wall mounted type 45
- Si39 302 specifications 46
- Specifications 35 46
- Wall mounted type 46
- Floor standing type 47
- Specifications 47
- Specifications si39 302 47
- Floor standing type 48
- Si39 302 specifications 48
- Specifications 37 48
- Concealed floor standing type 49
- Specifications 49
- Specifications si39 302 49
- Concealed floor standing type 50
- Si39 302 specifications 50
- Specifications 39 50
- Functional parts layout 8 52
- Part 3 refrigerant circuit 52
- Refrigerant circuit 2 52
- Refrigerant flow for each operation mode 1 52
- Refirgerant circuit 53
- Refrigerant circuit 53
- Refrigerant circuit si39 302 53
- Rxyq5m 53
- Rxyq5m 54
- Refirgerant circuit 55
- Refrigerant circuit si39 302 55
- Rxyq8 10 12m 55
- Refirgerant circuit 45 56
- Rxyq8 10 12m 56
- Si39 302 refrigerant circuit 56
- Refirgerant circuit 57
- Refrigerant circuit si39 302 57
- Rxyq14 16m 57
- Refirgerant circuit 47 58
- Rxyq14 16m 58
- Si39 302 refrigerant circuit 58
- Front view 59
- Functional parts layout 59
- Rxyq5m 59
- Front view 60
- Rxyq8 10 12m 60
- Front view 61
- Rxyq14 16m 61
- Refirgerant circuit 51 62
- Refrigerant flow for each operation mode 62
- Rxyq5m cooling operation 62
- Si39 302 refrigerant flow for each operation mode 62
- Cooling oil return operation 63
- Refirgerant circuit 63
- Refrigerant flow for each operation mode si39 302 63
- Heating oil return defrost operation 64
- Refirgerant circuit 53 64
- Si39 302 refrigerant flow for each operation mode 64
- Heating operation 65
- Refirgerant circuit 65
- Refrigerant flow for each operation mode si39 302 65
- Refirgerant circuit 55 66
- Rxyq8 10 12m cooling operation 66
- Si39 302 refrigerant flow for each operation mode 66
- Cooling oil return 67
- Refirgerant circuit 67
- Refrigerant flow for each operation mode si39 302 67
- Heating oil return defrost 68
- Refirgerant circuit 57 68
- Si39 302 refrigerant flow for each operation mode 68
- Heating operation 69
- Refirgerant circuit 69
- Refrigerant flow for each operation mode si39 302 69
- Refirgerant circuit 59 70
- Rxyq14 16m cooling operation 70
- Si39 302 refrigerant flow for each operation mode 70
- Cooling oil return operation 71
- Refirgerant circuit 71
- Refrigerant flow for each operation mode si39 302 71
- Heating oil return defrost operation 72
- Refirgerant circuit 61 72
- Si39 302 refrigerant flow for each operation mode 72
- Heating operation 73
- Refirgerant circuit 73
- Refrigerant flow for each operation mode si39 302 73
- Operation mode 4 2 basic control 5 74
- Other control 8 74
- Outline of control indoor unit 2 74
- Part 4 function 74
- Part 4 part 4 part 4 part 4 function function function function 74
- Protection control 3 74
- Special control 4 74
- Function 75
- In the event indoor unit stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 75
- Indoor unit stop or thermostat off 75
- Indoor unit thermostat on 75
- Malfunction standby 75
- Operation mode 75
- Operation mode si39 302 75
- Pump down residual operation 75
- Basic control 76
- C or more 76
- Heating operation is not functional at an outdoor air temperature of 2 76
- Normal operation 76
- Compressor pi control 77
- Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance 77
- Cooling operation 77
- Heating operation 77
- Compressor operating priority 78
- Function 67 78
- In the case of combination of 3 outdoor units the above diagram shows master unit slave unit 1 and slave unit 2 from left to right compressors may operate in any pattern other than those mentioned above according to the operating status 78
- Si39 302 basic control 78
- Available only on 50hz 79
- Basic control si39 302 79
- Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 79
- Function 79
- Rxyq14 16m 79
- Rxyq18 20 22m 79
- Rxyq24 26 28m 79
- Rxyq5m 79
- Rxyq8 10 12m 79
- Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 80
- Function 69 80
- Rxyq30 32m 80
- Rxyq34 36 38m 80
- Si39 302 basic control 80
- Basic control si39 302 81
- Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to on the operating conditions master unit slave unit 1 and slave unit 2 in this section are the names for control and they will be transferred according to the priority of rotation system 81
- Function 81
- Rxyq40 42 44m 81
- Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to on the operating conditions master unit slave unit 1 and slave unit 2 in this section are the names for control and they will be transferred according to the priority of rotation system 82
- Function 71 82
- Only for 50hz 82
- Rxyq46 48m 82
- Si39 302 basic control 82
- Electronic expansion valve pi control 83
- Main motorized valve ev1 control carries out the motorized valve y1e pi control to maintain the evaporator outlet superheated degree sh at constant during heating operation to make maximum use of the outdoor unit heat exchanger evaporator 83
- Subcooling motorized valve ev2 control makes pi control of the motorized valve y2e to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger 83
- The optimum initial value of the evaporator outlet superheated degree is 5 c but varies depending on the discharge pipe superheated degree of inverter compressor 83
- Cooling operation fan control 84
- Fan steps 84
- Function 73 84
- In cooling operation with low outdoor air temperature this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan 84
- Pc 2 mpa 84
- Pc hp pressure sensor detection value 84
- Si39 302 basic control 84
- Actuators are based on rxyq16m 85
- In the case of multi outdoor unit system both master and slave units perform the operations listed in the table above 85
- Special control 85
- Startup control 85
- Startup control in cooling operation 85
- Startup control in heating operation 85
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxyq16m 86
- Oil return operation 86
- Oil return operation in cooling operation 86
- Hours however 2 hours after turning power on first time 87
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxyq16m 87
- Oil return operation in heating operation 87
- Defrost operation is started when the outdoor heat exchanger temperature becomes lower than deicer temperature defrost operation is conducted once in max 2 hours 88
- Defrosting operation 88
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the defrost operation non operating unit stops during defrost preparation operation actuators are based on rxyq16m 88
- Actuators are based on rxyq16m 89
- Pump down residual operation 89
- Pump down residual operation in cooling operation 89
- Pump down residual operation in heating operation 89
- Actuators are based on rxyq16m 90
- Restart standby 90
- Actuators are based on rxyq16m 91
- Stopping operation 91
- When system is in stop mode 91
- In cooling operation the system operates in mode a or mode b listed in the table below 92
- In heating operation the system operates in mode a or mode b listed in the table below 92
- Mode a operating unit collects refrigerant 92
- Mode a or b operation 92
- Mode b stopping unit storage refrigerant 92
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 92
- The changeover operation for mode a and b is performed for the reason that the required refrigerant amount varies depending on the indoor unit operation capacity 92
- Pressure equalization prior to startup 93
- High pressure protection control 94
- In cooling operation 94
- In heating operation 94
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 94
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 94
- Protection control 94
- This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure 94
- In cooling operation 95
- In heating operation 95
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 95
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 95
- Low pressure protection control 95
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 95
- Discharge pipe protection control 96
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 96
- Inv compressor 96
- Std compressor 96
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 96
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 97
- Inv upper limit frequency 1 step 1 min up from current compressor frequency interval 97
- Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase 97
- Inverter fin temperature control 97
- Inverter overcurrent protection control 97
- Inverter protection control 97
- Std compressor overload protection 98
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 98
- After oil return operation after defrosting operation at the beginning of the starting control 99
- Details of outdoor unit rotation in the case of multi outdoor unit system each outdoor unit is given an operating priority for the control outdoor unit rotation makes it possible to change the operating priority of outdoor units thus the system becomes free of compressors that stop over an extended period of time at the time of partial loading preventing unbalanced oil level 99
- Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units 99
- In the case of multi outdoor unit system this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units 99
- Master unit slave unit 1 and slave unit 2 in this section are the names for installation they are determined in installation work and not changed thereafter these names are different from master unit and slave unit for control the outdoor unit connected the control wires f1 and f2 for the indoor unit should be designated as master unit consequently the led display on the main pcb for master unit slave unit 1 and slave unit 2 do not change refer to the page 90 99
- Other control 99
- Outdoor unit rotation 99
- Timing of outdoor unit rotation 99
- 7777799 7777777 77 7777777 100
- Blink h1 100
- Emergency operation 100
- Factory set 100
- In the case of 1 outdoor unit system rxyq8 to 16m 100
- Led display 100
- Restrictions for emergency operation 100
- 7777777 7777 7 101
- 7777797 7777777 77 7777777 101
- 9 7777777 7 101
- In the case of multi outdoor unit system rxyq18 to 48m 101
- 7777779 7777797 7777777 77 7777777 102
- Demand operation 102
- Heating operation prohibition 102
- Note reset the power supply during the outdoor unit is stopping to cancel the automatic backup operation forcibly 102
- Drain pump control 103
- Outline of control indoor unit 103
- Louver control for preventing ceiling dirt 105
- Thermostat sensor in remote controller 106
- Freeze prevention 108
- Outdoor unit pc board layout 04 3 field setting 05 110
- Part 5 test operation 110
- Test operation 00 110
- Check work prior to turn power supply on 111
- Follow the following procedure to conduct the initial test operation after installation 111
- Procedure and outline 111
- Test operation 111
- Turn power on 111
- 7777777 7777 7 112
- 9 7777777 7 112
- Check operation 112
- Confirmation on normal operation 113
- Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 114
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 114
- Operation when power is turned on 114
- Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 114
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 114
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 114
- When turning on power first time 114
- When turning on power the second time and subsequent 114
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 115
- 2 set mode display led leds display mode according to the setting 115
- 3 mode setting switch used to change mode 115
- 4 local setting switch used to make local settings 115
- Outdoor unit pc board 115
- Outdoor unit pc board layout 115
- Field setting 116
- Field setting from remote controller 116
- Wireless remote controller indoor unit 117
- Brc2a51 118
- Group no setting by simplified remote controller 118
- Simplified remote controller 118
- Field setting si39 302 119
- Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 119
- Setting contents and code no vrv unit 119
- Test operation 119
- Applicable range of field setting 120
- Si39 302 field setting 120
- Test operation 109 120
- Auto restart after power failure reset 121
- Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 121
- Detailed explanation of setting modes 121
- Fan speed changeover when thermostat is off by setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 121
- Filter sign setting 121
- For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 121
- For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 121
- If switching the filter sign on time set as given in the table below set time 121
- In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 121
- Setting table 121
- Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 121
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 121
- Air flow adjustment ceiling height make the following setting according to the ceiling height the setting position no is set to 01 at the factory 122
- Air flow direction setting set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 122
- In the case of fxaq fxhq 122
- In the case of fxfq100 125 122
- In the case of fxfq25 80 122
- Setting of air flow direction adjustment only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 122
- Setting table 122
- Air flow rate switching at discharge grille for field air flow rate switching when the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 123
- Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 123
- Setting table 123
- Centralized control group no setting 124
- Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 125
- Field setting si39 302 125
- Group no setting example 125
- Test operation 125
- Contents of control modes 126
- Setting of operation control mode from remote controller local setting 126
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 127
- Factory setting 127
- How to select operation mode whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 127
- 7 7 7 7 7 7 7 128
- 7 7 7 7 7 7 9 128
- 7 8 7 7 7 7 8 128
- Caution 128
- Field setting from outdoor unit 128
- Field setting si39 302 129
- Mode changing procedure 129
- Monitor mode h1p blinks used to check the program made in setting mode 2 129
- Setting mode 1 h1p off initial status when normal used to select the cool heat setting also indicates during abnormal low noise control and demand control 129
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 129
- Test operation 129
- There are the following three setting modes 129
- A setting mode 1 130
- B setting mode 2 131
- 7 7 7 7 7 135
- 7 7 7 7 8 135
- 7 7 7 7 9 135
- 7 7 7 8 7 135
- 7 7 7 8 8 135
- 7 7 7 9 7 135
- 7 7 8 7 7 135
- 7 7 8 7 8 135
- 7 7 8 8 7 135
- 7 7 8 8 8 135
- 7 7 9 7 7 135
- 7 8 7 7 7 135
- 7 8 7 7 8 135
- 7 8 7 8 7 135
- 7 8 7 8 8 135
- 7 8 8 7 7 135
- 7 8 8 7 8 135
- 7 8 8 8 7 135
- 7 8 8 8 8 135
- 8 7 7 7 7 135
- 8 7 8 7 7 135
- 8 7 8 7 8 135
- 8 7 8 8 7 135
- 9 7 7 7 7 135
- C monitor mode 135
- Defrost select setting short 135
- Emg operation backup operation setting on 135
- Field setting si39 302 135
- Medium 135
- Number of units for sequential start 1 unit 135
- Setting item 0 display contents of number of units for sequential start and others 135
- Tc setting h 135
- Te setting h 135
- Test operation 135
- Cool heat mode switching 137
- Multi outdoor units connection 139
- Address setting for 141
- Set lower 5 digits with binary number no to no 1 141
- Setting of low noise operation and demand operation 142
- Image of operation in the case of a 143
- Image of operation in the case of a b 143
- Image of operation in the case of b 143
- Field setting si39 302 145
- Image of operation in the case of a 145
- Image of operation in the case of a and b 145
- Image of operation in the case of b 145
- Test operation 145
- Additional refrigerant charge total flow 148
- Setting of refrigerant additional charging operation 148
- Si39 302 field setting 148
- Test operation 137 148
- When additional refrigerant is not charged all with outdoor unit in stop mode operate the outdoor unit and charge the liquid refrigerant from the service port of liquid stop value the additional charging operation is activated by pushbutton switch on the outdoor unit pc board 148
- Setting of refrigerant recovery mode 149
- Check operation 150
- Check operation function 150
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units to turn on some solenoid valves 150
- Note be sure to disconnect the compressor wiring when conducting the check operation mentioned above when the output voltage is approx 50 v 10 hz and the voltage balance between phases u v v w w u is within 5 the inverter pcb is normal 150
- Operating procedure 150
- Power transistor check operation 150
- Press mode button bs1 once and reset setting mode 2 150
- Setting of vacuuming mode 150
- To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of motorized valve 150
- Use the vacuum pump to perform vacuuming operation 150
- When the inverter system malfunctions malfunction of inverter inv compressor to locate where the malfunction occurs switching to the power transistor check mode of inverter in the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation the waveform can be checked by disconnecting the wiring of compressor 150
- With setting mode 2 while the unit stops set b refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and in centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 150
- Part 6 part 6 part 6 part 6 troubleshooting troubleshooting troubleshooting troubleshooting 152
- Part 6 troubleshooting 152
- Troubleshooting by indication on the remote controller 56 152
- Troubleshooting by remote controller 43 152
- Troubleshooting op central remote controller 18 153
- Troubleshooting op schedule timer 24 153
- Troubleshooting op unified on off controller 31 153
- Inspection mode 154
- Local setting mode service mode 154
- Normal mode 154
- Test operation mode 154
- The following modes can be selected by using the inspection test operation button on the remote control 154
- The inspection test button 154
- Troubleshooting by remote controller 154
- Self diagnosis by wired remote controller 155
- Self diagnosis by wireless remote controller 156
- The lower digit of the code changes as shown below when the up and down buttons are pressed 157
- Operation of the remote controller s inspection test operation button 159
- Troubleshooting 159
- Troubleshooting by remote controller si39 302 159
- Remote controller service mode 160
- Remote controller self diagnosis function 162
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 164
- Detail description on next page 165
- Malfunction code indication by outdoor unit pcb 165
- Monitor mode 165
- Push the mode button bs1 and returns to setting mode 1 165
- Push the return button bs3 and switches to the initial status of monitor mode 165
- Push the return button bs3 once to display first digit of malfunction code 165
- Push the set button bs2 and set the led display to a setting item 165
- Push the set button bs2 once to display master or slave1 or slave2 and malfunction location 165
- Push the set button bs2 once to display second digit of malfunction code 165
- Refer p 24 for monitor mode 165
- To enter the monitor mode push the mode button bs1 when in setting mode 1 165
- Troubleshooting 165
- Troubleshooting by remote controller si39 302 165
- Actuation of external protection device 167
- Applicable models all indoor unit models 167
- Defect of indoor unit pc board 167
- Improper field set 167
- Indoor unit error of external protection device 167
- Malfunction decision conditions 167
- Method of malfunction detection 167
- Remote controller display 167
- Supposed causes 167
- Troubleshooting 167
- Troubleshooting by indication on the remote controller 167
- Indoor unit pc board defect 168
- Indoor unit malfunction of drain level control system 33h 169
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 170
- Si39 302 troubleshooting by indication on the remote controller 170
- Troubleshooting 170
- Troubleshooting 159 170
- Applicable models all indoor units 171
- Detection by failure of signal for detecting number of turns to come from the fan motor 171
- Disconnected or faulty wiring between fan motor and pc board 171
- Fan motor lock 171
- Indoor unit fan motor m1f lock overload 171
- Malfunction decision conditions 171
- Method of malfunction detection 171
- Remote controller display 171
- Supposed causes 171
- Troubleshooting 171
- When number of turns can t be detected even when output voltage to the fan is maximum 171
- Indoor unit malfunction of swing flap motor ma 172
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 173
- Troubleshooting 173
- Troubleshooting by indication on the remote controller si39 302 173
- Applicable models all indoor unit models 174
- Defect of connecting cable 174
- Defect of indoor unit pc board 174
- Detection by failure of signal for detecting number of turns to come from the fan motor 174
- Indoor unit malfunction of moving part of electronic expansion valve 20e 174
- Malfunction decision conditions 174
- Malfunction of moving part of electronic expansion valve 174
- Method of malfunction detection 174
- Remote controller display 174
- Supposed causes 174
- Troubleshooting 174
- When number of turns can t be detected even when output voltage to the fan is maximum 174
- Coil check method for the moving part of the electronic expansion valve discount the electronic expansion valve from the pc board and check the continuity between the connector pins 175
- Continuity no continuity 175
- Normal 175
- Indoor unit drain level above limit 176
- Indoor unit malfunction of capacity determination device 177
- Applicable models all indoor unit models 178
- Defect of indoor unit pc board 178
- Defect of thermistor r2t for liquid pipe 178
- Indoor unit malfunction of thermistor r2t for heat exchanger 178
- Malfunction decision conditions 178
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 178
- Method of malfunction detection 178
- Refer to thermistor resistance temperature characteristics table on p280 178
- Remote controller display 178
- Supposed causes 178
- Troubleshooting 178
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 178
- Applicable models all indoor unit models 179
- Defect of indoor unit pc board 179
- Defect of indoor unit thermistor r3t for gas pipe 179
- Indoor unit malfunction of thermistor r3t for gas pipes 179
- Malfunction decision conditions 179
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 179
- Method of malfunction detection 179
- Refer to thermistor resistance temperature characteristics table on p280 179
- Remote controller display 179
- Supposed causes 179
- Troubleshooting 179
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 179
- Applicable models aii indoor unit models 180
- Defect of indoor unit pc board 180
- Defect of indoor unit thermistor r1t for air inlet 180
- Indoor unit malfunction of thermistor r1t for suction air 180
- Malfunction decision conditions 180
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 180
- Method of malfunction detection 180
- Refer to thermistor resistance temperature characteristics table on p280 180
- Remote controller display 180
- Supposed causes 180
- Troubleshooting 180
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 180
- Indoor unit malfunction of thermostat sensor in remote controller 181
- Outdoor unit pc board defect 182
- Outdoor unit actuation of high pressure switch 183
- Abnormal drop of low pressure lower than 0 5mpa 184
- Applicable models rxyq5 48m 184
- Defect of low pressure sensor 184
- Defect of outdoor unit pc board 184
- Error is generated when the low pressure is dropped under specific pressure 184
- Malfunction decision conditions 184
- Method of malfunction detection 184
- Outdoor unit actuation of low pressure sensor 184
- Refer to pressure sensor pressure voltage characteristics table on p282 184
- Remote controller display 184
- Stop valve is not opened 184
- Supposed causes 184
- Troubleshooting 184
- Voltage measurement point 184
- Applicable models rxyq5 48m 185
- Compressor lock 185
- Compressor motor lock 185
- Faulty inverter pc board 185
- High differential pressure 0 mpa or more 185
- Incorrect uvwn wiring 185
- Inverter pc board takes the position signal from uvwn line connected between the inverter and compressor and detects the position signal pattern 185
- Malfunction decision conditions 185
- Method of malfunction detection 185
- Remote controller display 185
- Stop valve is left in closed 185
- Supposed causes 185
- The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks when the position signal in 2 times cycle is detected 185
- Troubleshooting 185
- Compressor motor overcurrent lock 186
- Applicable models rxyq5 48m 187
- Clearing condition operate for 5 minutes normal 187
- Fan does not run due to foreign matters tangled 187
- Malfunction decision conditions 187
- Malfunction of fan motor 187
- Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs 187
- Malfunction of outdoor unit fan motor 187
- Method of malfunction detection 187
- Remote controller display 187
- Supposed causes 187
- The harness connector between fan motor and pc board is left in disconnected or faulty connector 187
- Troubleshooting 187
- When connector detecting fan speed is disconnected 187
- When malfunction is generated 4 times the system shuts down 187
- When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met 187
- Note refer check 8 9 and 12 to p 3 188
- Si39 302 troubleshooting by indication on the remote controller 188
- Troubleshooting 188
- Troubleshooting 177 188
- Applicable models rxyq5 48m 189
- Check disconnection of connector check continuity of expansion valve coil 189
- Defect of connecting cable 189
- Defect of moving part of electronic expansion valve 189
- Defect of outdoor unit pc board a1p 189
- Error is generated under no common power supply when the power is on 189
- Malfunction decision conditions 189
- Method of malfunction detection 189
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 189
- Remote controller display 189
- Supposed causes 189
- Troubleshooting 189
- Coil check method for the moving part of the electronic expansion valve disconnect the electronic expansion valve from the pc board and check the continuity between the connector pins 190
- Continuity approx 15 190
- Continuity approx 30 190
- No continuity 190
- Normal 190
- Outdoor unit abnormal discharge pipe temperature 191
- Refrigerant overcharged 192
- Abnormal fan motor signal circuit malfunction 193
- Abnormal outdoor fan motor signal 193
- Applicable models rxyq5 48m 193
- Broken short or disconnection connector of fan motor connection cable 193
- Detection of abnormal signal from fan motor 193
- Disconnect connector x2a and measure the following resistance 193
- Fan inverter pc board malfunction 193
- In case of detection of abnormal signal at starting fan motor 193
- Malfunction decision conditions 193
- Method of malfunction detection 193
- Remote controller display 193
- Supposed causes 193
- Troubleshooting 193
- Applicable models rxyq5 48m 194
- Defect of outdoor unit pc board a1p 194
- Defect of thermistor r1t for outdoor air 194
- Malfunction decision conditions 194
- Method of malfunction detection 194
- Outdoor unit malfunction of thermistor for outdoor air r1t 194
- Refer to thermistor resistance temperature characteristics table on p280 194
- Remote controller display 194
- Supposed causes 194
- The abnormal detection is based on current detected by current sensor 194
- The alarm indicator is displayed when the fan only is being used also 194
- Troubleshooting 194
- When the outside air temperature sensor has short circuit or open circuit 194
- Applicable models rxyq5 48m 195
- Current sensor malfunction 195
- Faulty current sensor 195
- Faulty outdoor unit pc board 195
- Malfunction decision conditions 195
- Malfunction is detected according to the current value detected by current sensor 195
- Method of malfunction detection 195
- Remote controller display 195
- Supposed causes 195
- Troubleshooting 195
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 195
- Applicable models rxyq5 48m 196
- Defect of outdoor unit pc board a1p 196
- Defect of thermistor r31t r32t or r33t for outdoor unit discharge pipe 196
- Malfunction decision conditions 196
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 196
- Method of malfunction detection 196
- Note 5 hp class r31t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t 196
- Outdoor unit malfunction of discharge pipe thermistor r31 33t 196
- Remote controller display 196
- Supposed causes 196
- The alarm indicator is displayed when the fan is being used also 196
- Troubleshooting 196
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 196
- Applicable models rxyq5 48m 197
- Defect of outdoor unit pc board a1p 197
- Defect of thermistor r2t for outdoor unit suction pipe 197
- Malfunction decision conditions 197
- Malfunction is detected from the temperature detected by the suction pipe temperature thermistor 197
- Method of malfunction detection 197
- Outdoor unit malfunction of thermistor r2t for suction pipe 197
- Refer to thermistor resistance temperature characteristics table on p280 197
- Remote controller display 197
- Supposed causes 197
- Troubleshooting 197
- When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 197
- Applicable models rxyq5 48m 198
- Defect of outdoor unit pc board a1p 198
- Defect of thermistor r4t for outdoor unit coil 198
- Malfunction decision conditions 198
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 198
- Method of malfunction detection 198
- Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 198
- Refer to thermistor resistance temperature characteristics table on p280 198
- Remote controller display 198
- Supposed causes 198
- Troubleshooting 198
- When a short circuit or an open circuit in the heat exchange thermistor is detected 198
- Applicable models rxyq5 48m 199
- Faulty outdoor unit pc board 199
- Faulty receiver gas pipe thermistor r5t 199
- Malfunction decision conditions 199
- Malfunction is detected according to the temperature detected by receiver gas pipe thermistor 199
- Malfunction of receiver gas pipe thermistor r5t 199
- Method of malfunction detection 199
- Refer to thermistor resistance temperature characteristics table on p280 199
- Remote controller display 199
- Supposed causes 199
- Troubleshooting 199
- When the receiver gas pipe thermistor is short circuited or open 199
- Applicable models rxyq5 48m 200
- Connection of low pressure sensor with wrong connection 200
- Defect of high pressure sensor system 200
- Defect of outdoor unit pc board 200
- Malfunction decision conditions 200
- Malfunction is detected from the pressure detected by the high pressure sensor 200
- Method of malfunction detection 200
- Outdoor unit malfunction of discharge pipe pressure sensor 200
- Refer to pressure sensor pressure voltage characteristics table on p282 200
- Remote controller display 200
- Supposed causes 200
- Troubleshooting 200
- Voltage measurement point 200
- When the discharge pipe pressure sensor is short circuit or open circuit 200
- Applicable models rxyq5 48m 201
- Connection of high pressure sensor with wrong connection 201
- Defect of low pressure sensor system 201
- Defect of outdoor unit pc board 201
- Malfunction decision conditions 201
- Malfunction is detected from pressure detected by low pressure sensor 201
- Method of malfunction detection 201
- Outdoor unit malfunction of suction pipe pressure sensor 201
- Refer to pressure sensor pressure voltage characteristics table on p282 201
- Remote controller display 201
- Supposed causes 201
- Troubleshooting 201
- Voltage measurement point 201
- When the suction pipe pressure sensor is short circuit or open circuit 201
- Actuation of fin thermal actuates above 89 c 202
- Applicable models rxyq5 48m 202
- Defect of fin thermistor 202
- Defect of inverter pc board 202
- Fin temperature is detected by the thermistor of the radiation fin 202
- Malfunction decision conditions 202
- Method of malfunction detection 202
- Outdoor unit malfunction of inverter radiating fin temperature rise 202
- Refer to thermistor resistance temperature characteristics table on p280 202
- Remote controller display 202
- Supposed causes 202
- Troubleshooting 202
- When the temperature of the inverter radiation fin increases above 89 c 202
- Applicable models rxyq5 48m 203
- Compressor start up malfunction mechanical lock 203
- Defect of compressor coil disconnected defective insulation 203
- Defect of inverter pc board 203
- Higher voltage than actual is displayed when the inverter output voltage is checked by tester 203
- Malfunction decision conditions 203
- Malfunction is detected from current flowing in the power transistor 203
- Method of malfunction detection 203
- Outdoor unit inverter compressor abnormal 203
- Remote controller display 203
- Supposed causes 203
- Troubleshooting compressor inspection 203
- When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 203
- Applicable models rxyq5 48m 204
- Compressor coil disconnected 204
- Compressor overload 204
- Defect of inverter pc board 204
- Malfunction decision conditions 204
- Malfunction is detected by current flowing in the power transistor 204
- Method of malfunction detection 204
- Outdoor unit inverter current abnormal 204
- Remote controller display 204
- Supposed causes 204
- Troubleshooting output current check 204
- When overload in the compressor is detected 204
- Applicable models rxyq5 48m 205
- Defect of compressor 205
- Defect of inverter pc board 205
- Malfunction decision conditions 205
- Malfunction is detected from current flowing in the power transistor 205
- Method of malfunction detection 205
- Outdoor unit inverter start up error 205
- Pressure differential start 205
- Remote controller display 205
- Supposed causes 205
- Troubleshooting 205
- When overload in the compressor is detected during startup 205
- Outdoor unit malfunction of transmission between inverter and control pc board 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 indication on the remote controller si39 302 207
- Applicable models rxyq5 48m 208
- Defect of inverter pc board 208
- Defect of k1m 208
- Defect of main circuit capacitor 208
- Imbalance in supply voltage is detected in pc board 208
- Improper main circuit wiring 208
- Malfunction decision conditions 208
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button 208
- Method of malfunction detection 208
- Open phase 208
- Outdoor unit inverter over ripple protection 208
- Remote controller display 208
- Supposed causes 208
- Troubleshooting 208
- Voltage imbalance between phases 208
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 208
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 209
- Applicable models rxyq5 48m 210
- Defect of outdoor unit pc board a1p 210
- Defect of pressure sensor 210
- Defect of thermistor r2t or r4t 210
- Low pressure drop due to refrigerant shortage or electronic expansion valve failure 210
- Malfunction decision conditions 210
- Malfunction is not decided while the unit operation is continued 210
- Method of malfunction detection 210
- Microcomputer judge and detect if the system is short of refrigerant 210
- Out of gas or refrigerant system clogging incorrect piping 210
- Refer to pressure sensor pressure voltage characteristics table on p282 210
- Refer to thermistor resistance temperature characteristics table on p280 210
- Remote controller display 210
- Short of gas malfunction is detected by discharge pipe temperature thermistor 210
- Supposed causes 210
- Troubleshooting 210
- Applicable models 211
- Defect of outdoor pc board a1p 211
- Detection is based on the voltage in main circuit capacitor for inverter and supply voltage the phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 211
- Malfunction decision conditions 211
- Method of malfunction detection 211
- Phase outdoor unit only 211
- Power supply open phase 211
- Power supply reverse phase 211
- Remote controller display 211
- Reverse phase open phase 211
- Supposed causes 211
- Troubleshooting 211
- Power supply insufficient or instantaneous failure 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 indication on the remote controller si39 302 213
- Check operation not executed 214
- Malfunction of transmission between indoor units 215
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 216
- Si39 302 troubleshooting by indication on the remote controller 216
- Troubleshooting 216
- Troubleshooting 205 216
- Applicable models all models of indoor units 217
- Connection of two main remote controllers when using 2 remote controllers 217
- Defect of indoor unit pc board 217
- Defect of remote controller pc board 217
- In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal 217
- Malfunction decision conditions 217
- Malfunction of indoor unit remote controller transmission 217
- Malfunction of transmission between remote controller and indoor unit 217
- Malfunction of transmission caused by noise 217
- Method of malfunction detection 217
- Normal transmission does not continue for specified period 217
- Remote controller display 217
- Supposed causes 217
- Troubleshooting 217
- Malfunction of transmission between outdoor units 218
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 219
- Troubleshooting 219
- Troubleshooting by indication on the remote controller si39 302 219
- Applicable models all models of indoor units 220
- Connection between sub remote controllers 220
- Defect of remote controller pc board 220
- In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 220
- Malfunction decision conditions 220
- Malfunction of transmission between main and sub remote controller 220
- Malfunction of transmission between master and slave remote controllers 220
- Method of malfunction detection 220
- Normal transmission does not continue for specified period 220
- Remote controller display 220
- Supposed causes 220
- Troubleshooting 220
- Malfunction of transmission between indoor and outdoor units in the same system 221
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 222
- Si39 302 troubleshooting by indication on the remote controller 222
- Troubleshooting 222
- Troubleshooting 211 222
- Applicable models all models of indoor unit rxyq5 48m 223
- Defect of outdoor unit pc board a1p 223
- Excess of connected indoor units 223
- Excessive number of indoor units 223
- Malfunction decision conditions 223
- Method of malfunction detection 223
- Mismatching of the refrigerant type of indoor and outdoor unit 223
- Remote controller display 223
- Setting of outdoor p c board was not conducted after replacing to spare parts p c board 223
- Supposed causes 223
- The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit 223
- Troubleshooting 223
- Address duplication of central remote controller 224
- Malfunction of transmission between central remote controller and indoor unit 225
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 226
- Si39 302 troubleshooting by indication on the remote controller 226
- Troubleshooting 226
- Troubleshooting 215 226
- Applicable models all models of indoor units rxyq5 48m 227
- Defect of indoor unit pc board 227
- Failure to execute wiring check operation 227
- Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor 227
- Malfunction decision conditions 227
- Method of malfunction detection 227
- Note test operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 227
- Refrigerant system not set incompatible wiring piping 227
- Remote controller display 227
- Supposed causes 227
- Troubleshooting 227
- Applicable models all models of indoor units rxyq5 48m 228
- Defect of indoor unit pc board 228
- Defect of outdoor unit pc board a1p 228
- Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor 228
- Malfunction decision conditions 228
- Malfunction of system refrigerant system address undefined 228
- Method of malfunction detection 228
- Remote controller display 228
- Supposed causes 228
- Troubleshooting 228
- Applicable models all models of indoor units rxyq5 48m 229
- Connector for setting master controller is disconnected 229
- Defect of indoor unit pc board 229
- Failure of pc board for central remote controller 229
- Malfunction decision conditions 229
- Malfunction of transmission between central remote controller and indoor unit 229
- Malfunction of transmission between optional controllers for centralized control and indoor unit 229
- Method of malfunction detection 229
- Microcomputer checks if transmission between indoor unit and central remote controller is normal 229
- Remote controller display 229
- Supposed causes 229
- Troubleshooting 229
- Troubleshooting op central remote controller 229
- When transmission is not carried out normally for a certain amount of time 229
- Pc board defect 230
- Applicable models centralized remote controller 231
- Defect of pc board of optional controllers for centralized control 231
- Malfunction decision conditions 231
- Malfunction of transmission between optional controllers for centralized control 231
- Method of malfunction detection 231
- Remote controller display 231
- Supposed causes 231
- Troubleshooting 231
- Improper combination of optional controllers for centralized control 232
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 233
- Troubleshooting 233
- Troubleshooting op central remote controller si39 302 233
- Address duplication improper setting 234
- Malfunction of transmission between central remote controller and indoor unit 235
- Troubleshooting op schedule timer 235
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 236
- Si39 302 troubleshooting op schedule timer 236
- Troubleshooting 236
- Troubleshooting 225 236
- Pc board defect 237
- Applicable models all models of indoor units schedule timer 238
- Defect of pc board of optional controllers for centralized control 238
- Malfunction decision conditions 238
- Malfunction of transmission between optional controllers for centralized control 238
- Method of malfunction detection 238
- Remote controller display 238
- Supposed causes 238
- Troubleshooting 238
- Improper combination of optional controllers for centralized control 239
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 240
- Si39 302 troubleshooting op schedule timer 240
- Troubleshooting 240
- Troubleshooting 229 240
- Address duplication improper setting 241
- Operation lamp blinks 242
- Troubleshooting op unified on off controller 242
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 243
- Troubleshooting 243
- Troubleshooting op unified on off controller si39 302 243
- Display under host computer integrate control blinks repeats single blink 244
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 245
- Troubleshooting 245
- Troubleshooting op unified on off controller si39 302 245
- Si39 302 troubleshooting op unified on off controller 246
- Troubleshooting 235 246
- Applicable models unified on off controller 247
- Central control address group no is not set for indoor unit 247
- Display under host computer integrate control blinks repeats double blink 247
- Improper address setting 247
- Improper wiring of transmission wiring 247
- Malfunction decision conditions 247
- Method of malfunction detection 247
- Remote controller display 247
- Supposed causes 247
- Troubleshooting 247
- Troubleshooting op unified on off controller si39 302 247
- Under host computer integrated control repeats double blink 247
- Check no 8 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 248
- Check no 9 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected 248
- Si39 302 troubleshooting op unified on off controller 248
- Troubleshooting 237 248
- Check no 12 check on pulse input of position signal of fan inverter pcb 1 disconnect the connector x2a while power supply off and operation off 2 is the voltage between pins no 4 and 5 on x2a approx 15 v after power supply is turned on 3 connect the connector x2a while power supply off and operation off 4 check below conditions when the fan motor is rotated one turn manually under the condition of operation off after power supply is turned on are the pulse approx 0 v and 5 v generated 4 times between no 1 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 2 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 3 and 5 on x2a 249
- Part 7 replacement procedure for inv compressor vrv ii rxyq5m to 48m 250
- Replacement procedure 251
- Replacement procedure for inv compressor vrv ii rxyq5m 48m 251
- List of electrical and functional parts 63 252
- Option list 70 252
- Part 8 appendix 252
- Part 8 part 8 part 8 part 8 appendix appendix appendix appendix 252
- Piping diagrams 42 252
- Piping installation point 73 252
- Selection of pipe size joints and header 75 252
- Thermistor resistance temperature characteristics 80 8 pressure sensor 82 9 method of replacing the inverter s power transistors and diode modules 83 252
- Wiring diagrams for reference 46 252
- Outdoor unit 253
- Piping diagrams 253
- Rxyq5my1b 253
- Rxyq8my1b rxyq10my1b rxyq12my1b 254
- Rxyq14my1b rxyq16my1b 255
- Electronic expansion valve filter filter 256
- Flare connectio 256
- Flare connection 256
- Fxcq fxzq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 256
- Heat exchanger gas piping connection port 256
- Indoor unit 256
- Liquid piping connection port 256
- R1t thermistor for suction air temperature r2t thermistor for liquid line temperature r3t thermistor for gas line temperature 256
- Φ 15 or less attached piping above φ 19 256
- Outdoor unit 257
- Rxyq5my1b 257
- Wiring diagrams for reference 257
- Rxyq8my1b rxyq10my1b rxyq12my1b 258
- Rxyq14my1b rxyq16my1b 259
- Field wiring 260
- Rxyq5 16my1b 260
- Rxyq18 32my1b 261
- Rxyq34 48my1b 262
- Fxcq20m 25m 32m 63mve 263
- Indoor unit 263
- Fxcq40m 50m 80m 125mve 264
- Fxzq20m 25m 32m 40m 50mve 265
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 266
- Fxkq25m 32m 40m 63mve 267
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 268
- Fxmq40m 50m 63m 80m 100m 125mve 269
- Fxmq200m 250mve 270
- Fxhq32m 63m 100mve 271
- Fxaq20m 25m 32mve 40m 50m 63mve 272
- Fxlq20m 25m 32m 40m 50m 63mve fxnq20m 25m 32m 40m 50m 63mve 273
- List of electrical and functional parts 274
- Outdoor unit 274
- Rxyq5 16my1b 274
- Appendix 265 276
- C off 87 c on 276
- Indoor side 276
- Indoor unit 276
- Si39 302 list of electrical and functional parts 276
- Appendix 277
- List of electrical and functional parts si39 302 277
- Appendix 267 278
- Si39 302 list of electrical and functional parts 278
- Appendix 279
- K ω 25 c 279
- List of electrical and functional parts si39 302 279
- St8602a 6 φ 6 279
- St8605 6 φ 8 279
- Μ f 400v 279
- Appendix 269 280
- Si39 302 list of electrical and functional parts 280
- 2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 installation box no 8 is necessary for second adaptor 281
- Appendix 281
- Note 1 installation box no is necessary for each adaptor marked 281
- Operation control system optional accessories 281
- Option list 281
- Option list of controllers 281
- Option list si39 302 281
- Various pc boards 281
- Adaptor must be procured on site 282
- Appendix 271 282
- Building management system 282
- Is a registered trade mark of echelon corporation 282
- Note installation box for 282
- Si39 302 option list 282
- System configuration 282
- Appendix 283
- Option list si39 302 283
- Option lists outdoor unit 283
- Rxyq18 32my1b 283
- Rxyq34 48my1b 283
- Rxyq5 16my1b 283
- In the case of 2m or less 284
- In the case of 2m or more 284
- Piping installation point 284
- Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 284
- The projection part between multi connection piping kits 284
- When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 284
- Good good 285
- The example of a wrong pattern 285
- Between outdoor unit and uppermost stream refnet joint 286
- For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table 286
- How to select pipe size 286
- How to select the refnet joint 286
- How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side ex refnet joint a 286
- Piping material select the piping material to be used from the next table according to piping size 286
- Rxyq5my1b rxyq8my1b rxyq10my1b rxyq12my1b rxyq14my1b rxyq16my1b 286
- Selection of pipe size joints and header 286
- The table shows the requirements of japanese high pressure gas control low the thickness and material shall be selected in accordance with local code as of jan 003 286
- Wall thickness of refrigerant pipe 286
- How to select the refnet header 287
- Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit 287
- Piping between the refnet joints 287
- Piping between the refnet joints and indoor unit 287
- Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should not exceed the refrigerant piping size selected by the model with combination units 287
- When connecting the indoor unit larger than 250 or more use with khrp26m33t m72t to upper stream side do not connect downstream side select the proper refnet header using the following table based on the total capacity index of indoor units installed after the header 287
- For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table 288
- How to select pipe size 288
- How to select the refnet joint 288
- How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side 288
- Main piping between multi connection piping kit and refnet joint select the proper ones based on the following table 288
- Piping material select the piping material to be used from the next table according to piping size 288
- Rxyq18my1b rxyq20my1b rxyq22my1b rxyq24my1b rxyq26my1b rxyq28my1b rxyq30my1b rxyq32my1b rxyq34my1b rxyq36my1b rxyq38my1b rxyq40my1b rxyq42my1b rxyq44my1b rxyq46my1b rxyq48my1b 288
- How to select the refnet header 289
- Piping between the multi connection piping kit 289
- Piping between the refnet joints 289
- Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should be larger than main piping size connection piping size should not exceed the refrigerant piping size selected by the model with combination units 289
- Select the proper pipe size using the following table based on the total capacity index of outdoor units connected upper stream 289
- Select the proper refnet header using the following table based on the total capacity index of indoor units installed after the header 289
- The table shows the requirements of japanese high pressure gas control low the thickness and material shall be selected in accordance with local code as of jan 003 289
- Wall thickness of refrigerant pipe 289
- When using refnet joints at the first branch counted from the outdoor unit side use khrp26m73h for larger than rxyq24my1b 289
- Outdoor unit multi connection piping kit 290
- Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit 290
- Pipe size for direct connection to outdoor unit must be the same as the connection size of outdoor unit 290
- Piping between outdoor unit and multi connection piping kit 290
- Piping between refnet joint and indoor unit 290
- Select the piping kit according to the no of outdoor units 290
- Appendix 291
- For gas pipe r3t 291
- For suction pipe r4t for receiver gas pipe r5t 291
- Indoor unit for air suction r1t for liquid pipe r2t 291
- Outdoor unit for outdoor air r1t for coil r2t 291
- Thermistor resistance temperature characteristics 291
- Thermistor resistance temperature characteristics si39 302 291
- Appendix 281 292
- Outdoor unit thermistors for discharge pipe r3t 292
- Si39 302 thermistor resistance temperature characteristics 292
- Pressure sensor 293
- Before checking disconnect the electric wiring connected to the power transistor and diode module 294
- Decision according to continuity check by analog tester 294
- Electronic circuit 294
- Inverter p c board 294
- Inverter pc board aip 294
- Method of replacing the inverter s power transistors and diode modules 294
- Part 9 precautions for new refrigerant r410 296
- About refrigerant r410a 297
- Characteristics of new refrigerant r410a 1 performance almost the same performance as r22 and r407c 2 pressure working pressure is approx 1 times more than r22 and r407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 297
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 297
- Outline 297
- Precautions for new refrigerant r410 297
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 297
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 297
- Precautions for new refrigerant r410 287 298
- Si39 302 precautions for new refrigerant r410 298
- Thermodynamic characteristic of r410a 298
- Refrigerant cylinders 299
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 300
- Copper tube material and thickness 300
- O soft annealed h hard drawn 300
- R410a is used under higher working pressure compared to previous refrigerants r22 r407c 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 r22 r407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 300
- Service tools 300
- Tool compatibility 300
- 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 r410a 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 301
- Differences 2 change of dimension a 301
- Flaring tool 301
- Specifications 2 dimension a 301
- Unit mm 301
- Can not be used 304
- Index index index index 306
- Drawings flow charts 310
- Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 310
- L for further improvement specifications or designs are subject to change without prior notice 312
- Printed in singapore 04 2003 ak 312
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