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Daikin RXYQ10MY1K [175/310] Indoor unit malfunction of thermistor r1t for suction air
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Troubleshooting by Indication on the Remote Controller Si39-502A
164 Troubleshooting
3.11
“
C9
”
Indoor Unit: Malfunction of Thermistor (R1T) for
Suction Air
Remote
Controller
Display
C9
Applicable
Models
AII indoor unit models
Method of
Malfunction
Detection
Malfunction detection is carried out by temperature detected by suction air temperature
thermistor.
Malfunction
Decision
Conditions
When the suction air temperature thermistor becomes disconnected or shorted while the unit is
running.
Supposed
Causes
Defect of indoor unit thermistor (R1T) for air inlet
Defect of indoor unit PC board
Troubleshooting
∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P277.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the indoor unit PC board.
Connect the connector and turn on
again.
NO
NO
Replace the thermistor (R1T).
YES
YES
Connector
is connected to X13A of
the indoor unit PC
board.
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the indoor
unit PC board.
(7.2kΩ~
112kΩ)
(V2786)
Содержание
- R 410a heat pump 50 60hz for high outdoor temperature use 1
- R 410a heat pump rxyq8 30my1k e ylk e 1
- Rxyq8 30my1k e ylk e 1
- Service manual 1
- Si39 502a 1
- Basic control 4 2
- Combination of outdoor units 4 capacity range 2
- Function general 2 2
- Functional parts layout 6 2
- Introduction vi 2
- Model names of indoor outdoor units 2 external appearance 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 refrigerant circuit 3 2
- Part 4 function 1 2
- R 410a heat pump 50 60hz 2
- Refrigerant circuit 4 2
- Refrigerant flow for each operation mode 7 2
- Special control 0 2
- Specifications 2
- Table of contents 2
- Other control 4 3
- Outdoor unit pc board layout 3 3 field setting 4 3
- Outline of control indoor unit 8 3
- Part 5 test operation 7 3
- Part 6 troubleshooting 33 3
- Protection control 9 3
- Symptom based troubleshooting 36 2 troubleshooting by remote controller 39 3
- Test operation 8 3
- Troubleshooting by indication on the remote controller 51 3
- List of electrical and functional parts 63 5
- Option list 69 5
- Part 7 appendix 35 5
- Piping diagrams 36 5
- Piping installation point 72 6 selection of pipe size joints and header 75 7 thermistor resistance temperature characteristics 77 5
- Troubleshooting op central remote controller 15 5
- Troubleshooting op schedule timer 20 5
- Troubleshooting op unified on off controller 27 5
- Wiring diagrams for reference 42 5
- Drawings flow charts v 6
- Index i 6
- Part 8 precautions for new refrigerant r 410a 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
- General information 13
- Indoor units 13
- Indoor units connection unit series 50hz only 13
- Model names of indoor outdoor units 13
- Model names of indoor outdoor units si39 502a 13
- Note fxdq has following 2 series as shown below fxdq nve with drain pump fxdq nvet without drain pump for general asia area except for eu china and australia 13
- Notes bev unit is required for each indoor unit 13
- Outdoor units 13
- Ceiling mounted built in type 14
- Ceiling mounted cassette corner type 14
- Ceiling mounted cassette type double flow 14
- Ceiling mounted cassette type multi flow 14
- Ceiling mounted duct type 14
- Ceiling suspended cassette type connection unit series 14
- Ceiling suspended type 14
- Concealed floor standing type 14
- External appearance 14
- Floor standing type 14
- Floor standing type connection unit series 14
- General information 3 14
- Indoor units 14
- Si39 502a external appearance 14
- Slim ceiling mounted duct type 14
- Wall mounted type 14
- Wall mounted type connection unit series 14
- Outdoor units 15
- Rxyq16m 18m 20m 15
- Rxyq24m 26m 28m 30m 15
- Rxyq8m 10m 15
- Combination of outdoor units 16
- Capacity index only for high outdoor temperature use type rxy 17
- Capacity range 17
- Capacity range si39 502a 17
- General information 17
- Indoor units 17
- Indoor units connection unit series 50hz only 17
- My1k e mylk e 17
- Outdoor units 17
- Part 2 specifications 18
- Specifications 18
- Outdoor unit s 19
- Specifications 19
- Specifications si39 502a 19
- Si39 502a specifications 20
- Specifications 9 20
- Specifications 21
- Specifications si39 502a 21
- Si39 502a specifications 22
- Specifications 11 22
- Specifications 23
- Specifications si39 502a 23
- Si39 502a specifications 24
- Specifications 13 24
- Specifications 25
- Specifications si39 502a 25
- Si39 502a specifications 26
- Specifications 15 26
- Ceiling mounted cassette type double flow 27
- Indoor units 27
- Specifications 27
- Specifications si39 502a 27
- Ceiling mounted cassette type double flow 28
- Si39 502a specifications 28
- Specifications 17 28
- Ceiling mounted cassette type multi flow 29
- Specifications 29
- Specifications si39 502a 29
- Ceiling mounted cassette type multi flow 30
- Si39 502a specifications 30
- Specifications 19 30
- Ceiling mounted cassette corner type 31
- Specifications 31
- Specifications si39 502a 31
- Si39 502a specifications 32
- Slim ceiling mounted duct type with drain pump 32
- Specifications 21 32
- Slim ceiling mounted duct type with drain pump 33
- Specifications 33
- Specifications si39 502a 33
- Si39 502a specifications 34
- Slim ceiling mounted duct type without drain pump 34
- Specifications 23 34
- Slim ceiling mounted duct type without drain pump 35
- Specifications 35
- Specifications si39 502a 35
- Ceiling mounted built in type 36
- Si39 502a specifications 36
- Specifications 25 36
- Ceiling mounted built in type 37
- Specifications 37
- Specifications si39 502a 37
- Ceiling mounted built in type 38
- Si39 502a specifications 38
- Specifications 27 38
- Ceiling mounted duct type 39
- Specifications 39
- Specifications si39 502a 39
- Ceiling mounted duct type 40
- Si39 502a specifications 40
- Specifications 29 40
- Ceiling suspended type 41
- Specifications 41
- Specifications si39 502a 41
- Si39 502a specifications 42
- Specifications 31 42
- Wall mounted type 42
- Specifications 43
- Specifications si39 502a 43
- Wall mounted type 43
- Floor standing type 44
- Si39 502a specifications 44
- Specifications 33 44
- Floor standing type 45
- Specifications 45
- Specifications si39 502a 45
- Concealed floor standing type 46
- Si39 502a specifications 46
- Specifications 35 46
- Concealed floor standing type 47
- Specifications 47
- Specifications si39 502a 47
- Bev units 48
- Ceiling suspended cassette type 48
- Si39 502a specifications 48
- Specifications 37 48
- Specifications 49
- Specifications si39 502a 49
- Wall mounted type 49
- Bev units 50
- Si39 502a specifications 50
- Specifications 39 50
- Wall mounted type 50
- Floor standing type 51
- Specifications 51
- Specifications si39 502a 51
- Floor standing type 52
- Si39 502a specifications 52
- Specifications 41 52
- Part 3 refrigerant circuit 54
- Refrigerant circuit 55
- Rxyq8m 10m 55
- Refirgerant circuit 45 56
- Rxyq8m 10m 56
- Si39 502a refrigerant circuit 56
- Front view 57
- Functional parts layout 57
- Functional parts layout si39 502a 57
- Refirgerant circuit 57
- Rxyq8m 10m 57
- Refirgerant circuit 47 58
- Refrigerant flow for each operation mode 58
- Rxyq8m 10m cooling operation 58
- Si39 502a refrigerant flow for each operation mode 58
- Cooling oil return operation 59
- Refirgerant circuit 59
- Refrigerant flow for each operation mode si39 502a 59
- Heating oil return defrost operation 60
- Refirgerant circuit 49 60
- Si39 502a refrigerant flow for each operation mode 60
- Heating operation 61
- Refirgerant circuit 61
- Refrigerant flow for each operation mode si39 502a 61
- Basic control 4 62
- Function general 2 62
- Other control 4 62
- Outline of control indoor unit 8 62
- Part 4 function 62
- Part 4 part 4 part 4 part 4 function function function function 62
- Protection control 9 62
- Special control 0 62
- Function general 63
- Symbol 63
- Function 53 64
- 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 64
- Indoor unit stop or thermostat off 64
- Indoor unit thermostat on 64
- Malfunction standby 64
- Operation mode 64
- Pump down residual operation 64
- Si39 502a function general 64
- Basic control 65
- List of functions in normal operation 65
- Normal operation 65
- Compressor pi control 66
- 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 66
- Cooling operation 66
- Heating operation 66
- Basic control si39 502a 67
- Compressor step control compressor operations vary with the following steps according to information in 2 compressor pi control furthermore the operating priority of compressors is subject to information in 67
- Each compressor operates in the following order of priority in the case of multi outdoor unit system each compressor operates in any of pattern 1 through pattern 3 according to the rotation of outdoor units 67
- Function 67
- 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 67
- Inv inverter compressor std1 standard compressor 1 67
- Inv std1 67
- No 1 no 2 67
- No 1 no 3 67
- No 1 no 4 67
- No 2 no 4 67
- No 2 no 5 67
- No 2 no 5 no 1 no 4 no 3 no 6 67
- No 3 no 6 67
- No 3 no 6 no 2 no 5 67
- Notes 1 inv inverter compressor std1 standard compressor 1 std2 standard compressor 2 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 67
- Operating priority and rotation of compressors 67
- Pattern 1 pattern 2 pattern 3 67
- Rxyq16m 18m 20m 67
- Rxyq24m 26m 28m 30m 67
- Rxyq8m 10m 67
- Function 57 68
- Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 68
- Rxyq16m 18m 20m 68
- Rxyq24m 26m 28m 30m 68
- Si39 502a basic control 68
- Electronic expansion valve pi control 69
- Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode 69
- 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 69
- Step control of outdoor unit fans 69
- 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 69
- 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 69
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 69
- For fan revolutions in each step refer to information on page 58 70
- Outdoor unit fan control in cooling operation 70
- While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units 70
- Special control 71
- Startup control 71
- Startup control in cooling operation 71
- Startup control in heating operation 71
- This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined 71
- In order to prevent the compressor from running out of oil the oil return operation is conducted to recover oil flown out from the compressor to the system side 72
- 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 72
- Oil return operation 72
- Oil return operation in cooling operation 72
- Start conditions referring to the set conditions for the following items start the oil return operation in cooling cumulative oil feed rate timer setting make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned on and then every eight hours furthermore the cumulative oil feed rate is computed from tc te and compressor loads 72
- 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 73
- Oil return operation in heating operation 73
- Defrosting operation 74
- 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 74
- To defrost the outdoor unit heat exchanger while in heating operation the defrost operation is conducted to recover the heating capacity start conditions referring to the set conditions for the following items start the defrosting operation heat transfer coefficient of the outdoor unit heat exchanger heat exchange temperature tb timer set to two hours at minimum furthermore the heat transfer coefficient of the outdoor unit heat exchanger is computed from tc te and compressor loads 74
- If the liquid refrigerant stays in the heat exchanger at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the heat exchanger while the compressor stops the pump down residual operation is conducted 75
- Pump down residual operation 75
- Pump down residual operation in cooling operation 75
- Pump down residual operation in heating operation 75
- Crankcase heater control 76
- In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 76
- Restart standby 76
- Standby 76
- Used to forcedly stop the compressor for a period of five minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 76
- In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times 77
- Stop due to malfunction 77
- Stopping operation 77
- This mode is used to define actuator operations when the system stops 77
- When system is in stop mode 77
- In heating operation the system operates with following mode 78
- Mode a operating unit collects refrigerant 78
- Mode a or b operation 78
- Mode b stopping unit storage refrigerant 78
- Stopping operation of slave units during master unit is in operation with multi outdoor unit system 78
- 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 78
- While the master unit is in operation this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode in cooling operation the system operates in mode a or mode b listed in the table below 78
- Pressure equalization prior to startup 79
- High pressure protection control 80
- In cooling operation 80
- In heating operation 80
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 80
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 80
- Protection control 80
- 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 80
- In cooling operation 81
- In heating operation 81
- In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 81
- In the case of multi outdoor unit system the entire system performs this control in the following sequence 81
- Low pressure protection control 81
- Master unit 52 hz off off 81
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 81
- Discharge pipe protection control 82
- Each compressor performs the discharge pipe temperature protection control individually in the following sequence 82
- Inv compressor 82
- Std compressor 82
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 82
- In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 83
- Inv upper limit frequency 1 step 1 min up from current compressor frequency interval 83
- 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 83
- Inverter fin temperature control 83
- Inverter overcurrent protection control 83
- Inverter protection control 83
- Std compressor overload protection 84
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 84
- Other control 85
- Outdoor unit rotation 85
- Emergency operation 86
- In the case of 1 outdoor unit system rxyq8m 10m 86
- Restrictions for emergency operation 86
- In the case of multi outdoor unit system rxyq16m to 30m 87
- 777777 88
- 7777777 7777 88
- Blink h1 88
- Demand operation 88
- Heating operation prohibition 88
- Led display 88
- Drain pump control 89
- Outline of control indoor unit 89
- Louver control for preventing ceiling dirt 91
- Thermostat sensor in remote controller 92
- Assuming that the suction air temperature at the time of starting the dry operation is tro and the suction air temperature in operation is tr 94
- Function 83 94
- Furthermore while in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode 94
- Si39 502a outline of control indoor unit 94
- Thermostat control in dry operation 94
- Thermostat control while in normal operation 94
- Vrv multi systems are set at factory to thermostat control mode using the remote controller while in normal thermostat differential control mode i e factory set mode the thermostat turns off when the system reaches a temperature of 1 c from the set temperature while in cooling operation or of 1 c from that while in heating operation 94
- While in a single remote controller group control the body thermostat is only used fro this control furthermore while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 2 c for the value detected with the body thermostat through field settings the thermostat differential setting can be changed from 1 c to 0 c for details on the changing procedure refer to information on page onward 94
- While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 94
- Freeze prevention 95
- Heater control 96
- 1 l or ll only on fxfq models 97
- List of swing flap operations 97
- Swing flaps operate as shown in table below 97
- Outdoor unit pc board layout 3 3 field setting 4 98
- Part 5 test operation 98
- Test operation 8 98
- Check work prior to turn power supply on 99
- Follow the following procedure to conduct the initial test operation after installation 99
- Procedure and outline 99
- Test operation 99
- Additional charging of refrigerant 100
- Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 100
- Bring the stop valves to the following conditions respectively 100
- Check the led display of the outdoor unit pc board 100
- Check the power supply 100
- Check the stop valves 100
- Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 100
- Disconnect the refrigerant charge hose and then open the liquid side stop valve 100
- Even if no stop operation is conducted the equipment will automatically stop after a lapse of 30 minutes at maximum 100
- If a full amount of refrigerant cannot be charged with the outdoor unit off charge the refrigerant by the deficient amount according to the following procedure 100
- Is the power supplied to the outdoor unit and the indoor unit 100
- Liquid side stop valve closed gas side stop valve open 100
- Make field settings if needed for the setting procedure refer to information in 3 field settings from outdoor unit on page onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 100
- Make field settings with outdoor unit pc board 100
- Operation after stop 100
- Press the check button bs3 after charging the specified amount of refrigerant 100
- Set the system to refrigerant additional charging operation while in setting mode 2 100
- Stopping equipment 100
- The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 100
- The system will automatically start operation the h2p blinks during operation and test operaion and under centralized control are displayed on the remote controller 100
- Turn outdoor unit and indoor unit power on 100
- Turn power on 100
- Check operation 101
- During check operation mount front panel to avoid the misjudging check operation is mandatory for normal unit operation when the check operation is not executed alarm code u3 will be displayed 101
- If the check operation is started within approximately 12 minutes after turning on the power supply to the indoor and outdoor units h2p will turn on and the compressor will not operate referring to information in table in 1 turn power on on the previous page check to be sure the led displays are normal and then operate the compressor for the outdoor multi system an outdoor unit to which the indoor unit connecting wires are connected serves as the master unit be sure to make settings with pushbutton switches on the master unit in order to ensure even refrigerant conditions there may be cases where a maximum of approximately 10 minutes are required for the compressor to start up which however is not a malfunction no malfunctions can be checked on individual indoor unit after the completion of this check operation check the individual indoor unit for any malfunctions while in normal operation mode using the remote controller while in check operation mode the indoor units as well as the ou 101
- Conduct normal unit operation after the check operation has been completed when outdoor air temperature is 24 c or higher the unit can not be operated with heating mode see the instruction manual attached confirm that the indoor outdoor units can be operated normally when an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat up it sufficiently then start operation again operate indoor unit one by one to check that the corresponding outdoor unit operates confirm that the indoor unit discharges cold air or warm air operate the air direction control button and flow rate control button to check the function of the devices 102
- Confirmation on normal operation 102
- For a period of approximately 5 minutes after the compressor stops even if the on off button for the indoor units in the same refrigerant system is pressed the compressor will not operate after stopping the compressor operation using the remote controller the outdoor unit may conduct the residual operation for a period of 5 minutes at maximum if the system is set to nighttime automatic low noise operation setting or external low noise level setting the outdoor unit fan may operate at a low speed which however is not a malfunction when the check operation is not conducted using the test operation button at the first test operation after installation the malfunction code u3 will be displayed be sure to conduct the check operation according to 1 check operation for details refer to information on the previous page 102
- Malfunction code in case of an alarm code displayed on remote controller 102
- 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 103
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter pc board a2p and control transformer t1r t2r in switch box together 103
- Operation when power is turned on 103
- 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 103
- The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 103
- When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 103
- When turning on power first time 103
- When turning on power the second time and subsequent 103
- 1 service monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 104
- 2 set mode display led leds display mode according to the setting 104
- 3 mode setting switch used to change mode 104
- 4 local setting switch used to make local settings 104
- Outdoor unit pc board 104
- Outdoor unit pc board layout 104
- Field setting 105
- Field setting from remote controller 105
- Wireless remote controller indoor unit 106
- Simplified remote controller 107
- 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 108
- Setting contents and code no vrv indoor unit 108
- Si39 502a field setting 108
- Test operation 97 108
- 1 static pressure selection 109
- Applicable range of field setting 109
- Field setting si39 502a 109
- Test operation 109
- Auto restart after power failure reset 110
- 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 110
- Detailed explanation of setting modes 110
- 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 since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 110
- Filter sign setting 110
- 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 110
- 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 110
- If switching the filter sign on time set as given in the table below set time 110
- 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 110
- Setting table 110
- Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 110
- 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 111
- 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 01 111
- In the case of fxaq fxhq 111
- In the case of fxfq100 125 111
- In the case of fxfq25 80 111
- In the case of fxuq71 125 111
- 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 111
- Setting table 111
- 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 112
- Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 112
- Setting of the static pressure selection for fxdq model 112
- Setting table 112
- Centralized control group no setting 113
- Brc7c type 114
- 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 114
- Group no setting by wireless remote controller for centralized control brc7e type brc4c type 1 when in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 set mode no 00 with button 3 set the group no for each group with button advance backward 4 enter the selected group numbers by pushing button 5 push button and return to the normal mode 114
- Group no setting example 114
- Si39 502a field setting 114
- Test operation 103 114
- Contents of control modes 115
- Setting of operation control mode from remote controller local setting 115
- Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 1 factory setting 116
- 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 116
- Field setting from outdoor unit 117
- List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 118 onward 117
- For setting items of 1 refer to detailed information provided on page 118 onward 118
- Caution 119
- Dip switch detail 119
- Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 119
- If the ds1 1 4 ds2 1 4 setting has not been carried out error code ua is displayed and unit can not be operated 119
- Initial conditions of dip switches 119
- Make the following settings according to models of outdoor units all models are set to off at factory 119
- Refer ds1 1 4 ds2 1 4 setting detail on next page 119
- Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 119
- Detail of ds1 1 4 ds2 1 4 setting 120
- 7 7 7 7 7 7 7 121
- 7 7 7 7 7 7 9 121
- 7 8 7 7 7 7 7 121
- 7 8 7 7 7 7 8 121
- Factory setting 121
- Field setting si39 502a 121
- Mode changing procedure 1 121
- Mode changing procedure 2 121
- Monitor mode h1p blinks used to check the program made in setting mode 2 121
- Setting by pushbutton switches the following settings are made by pushbutton switches on pc board in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled the master unit and slave unit can be discriminated with the led display as shown below 121
- 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 121
- Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 121
- Test operation 121
- There are the following three setting modes 121
- 7 8 7 7 7 7 122
- A setting mode 1 122
- Procedure for changing cool heat selection setting 122
- Si39 502a field setting 122
- Test operation 111 122
- This mode is used to set and check the following items 1 set items in order to make cool heat selection in a batch of outdoor unit group change the setting cool heat selection ind used to select cool or heat by individual outdoor unit factory set cool heat selection master used to select cool or heat by outdoor unit group with the master unit cool heat selection slave used to select cool or heat by outdoor unit group with the slave unit 2 check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 setting conditions of cool heat selection individual batch master batch slave 3 low noise operating conditions in normal operation in low noise operation 4 demand operating conditions in normal operation in demand operation 122
- B setting mode 2 123
- 7 7 7 7 7 127
- 7 7 7 7 8 127
- 7 7 7 7 9 127
- 7 7 7 8 7 127
- 7 7 7 8 8 127
- 7 7 7 9 7 127
- 7 7 8 7 7 127
- 7 7 8 7 8 127
- 7 7 8 8 7 127
- 7 7 8 8 8 127
- 7 7 9 7 7 127
- 7 8 7 7 7 127
- 7 8 7 7 8 127
- 7 8 7 8 7 127
- 7 8 7 8 8 127
- 7 8 8 7 7 127
- 7 8 8 7 8 127
- 7 8 8 8 7 127
- 7 8 8 8 8 127
- 8 7 7 7 7 127
- 8 7 8 7 7 127
- 8 7 8 7 8 127
- 8 7 8 8 7 127
- C monitor mode 127
- Defrost select setting short 127
- Emg operation backup operation setting 127
- Field setting si39 502a 127
- Setting item 0 display contents of various setting 127
- Tc setting h 127
- Te setting h 127
- Test operation 127
- The numbers in the no column represent the number of times to press the set bs2 button 127
- Cool heat mode switching 129
- Multi outdoor units connection 131
- Multi outdoor units connection 132
- Address setting for 133
- Set lower 5 digits with binary number no to no 1 133
- Supplementation on and when switching cool heat for each adapter pc board with the use of more than one adapter pc board set the address of the external control adaptor for outdoor unit pc board ds1 and ds2 so that it matches the unified cool heat address of outdoor unit main pc board 133
- Setting of low noise operation and demand operation 134
- Image of operation in the case of a 135
- Image of operation in the case of a and b 135
- Image of operation in the case of b 135
- A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 136
- B when the continuous demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 136
- Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 136
- Field setting si39 502a 137
- Image of operation in the case of a 137
- Image of operation in the case of a and b 137
- Image of operation in the case of b 137
- Test operation 137
- Additional refrigerant charge total flow 140
- Setting of refrigerant additional charging operation 140
- Si39 502a field setting 140
- Test operation 129 140
- 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 140
- Setting of refrigerant recovery mode 141
- Check operation 142
- Check operation function 142
- In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 142
- 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 pc board is normal 142
- Operating procedure 142
- Power transistor check operation 142
- Press mode button bs1 once and reset setting mode 2 142
- Setting of vacuuming mode 142
- 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 142
- Use the vacuum pump to perform vacuuming operation 142
- 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 142
- With setting mode 2 while the unit stops set refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and under centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 142
- Part 6 part 6 part 6 part 6 troubleshooting troubleshooting troubleshooting troubleshooting 144
- Part 6 troubleshooting 144
- Symptom based troubleshooting 36 2 troubleshooting by remote controller 39 144
- Troubleshooting by indication on the remote controller 51 144
- Troubleshooting op central remote controller 15 145
- Troubleshooting op schedule timer 20 145
- Troubleshooting op unified on off controller 27 146
- Symptom based troubleshooting 147
- Inspection mode 150
- Local setting mode service mode 150
- Normal mode 150
- Test operation mode 150
- The following modes can be selected by using the inspection test operation button on the remote control 150
- The inspection test button 150
- Troubleshooting by remote controller 150
- Self diagnosis by wired remote controller 151
- Self diagnosis by wireless remote controller 152
- The lower digit of the code changes as shown below when the up and down buttons are pressed 153
- Operation of the remote controller s inspection test operation button 154
- Si39 502a troubleshooting by remote controller 154
- Troubleshooting 143 154
- Remote controller service mode 155
- Remote controller self diagnosis function 157
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 159
- Malfunction code indication by outdoor unit pc board 160
- Monitor mode 160
- Si39 502a troubleshooting by remote controller 160
- Troubleshooting 149 160
- Actuation of external protection device 162
- Applicable models all indoor unit models 162
- Defect of indoor unit pc board 162
- Detect open or short circuit between external input terminals in indoor unit 162
- Improper field set 162
- Indoor unit error of external protection device 162
- Malfunction decision conditions 162
- Method of malfunction detection 162
- Remote controller display 162
- Supposed causes 162
- Troubleshooting 162
- Troubleshooting by indication on the remote controller 162
- When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 162
- Indoor unit pc board defect 163
- Indoor unit malfunction of drain level control system s1l 164
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 165
- Troubleshooting 165
- Troubleshooting by indication on the remote controller si39 502a 165
- Applicable models all indoor units 166
- Detection by failure of signal for detecting number of turns to come from the fan motor 166
- Disconnected or faulty wiring between fan motor and pc board 166
- Fan motor lock 166
- Indoor unit fan motor m1f lock overload 166
- Malfunction decision conditions 166
- Method of malfunction detection 166
- Remote controller display 166
- Supposed causes 166
- Troubleshooting 166
- When number of turns can t be detected even when output voltage to the fan is maximum 166
- Indoor unit malfunction of swing flap motor ma 167
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 168
- Si39 502a troubleshooting by indication on the remote controller 168
- Troubleshooting 168
- Troubleshooting 157 168
- Applicable models all indoor unit models 169
- Defect of connecting cable 169
- Defect of indoor unit pc board 169
- Indoor unit malfunction of moving part of electronic expansion valve 20e 169
- Malfunction decision conditions 169
- Malfunction of moving part of electronic expansion valve 169
- Method of malfunction detection 169
- Remote controller display 169
- Supposed causes 169
- Troubleshooting 169
- Use a microcomputer to check the electronic expansion valve for coil conditions 169
- When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 169
- 1 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 170
- Continuity no continuity 170
- Normal 170
- Indoor unit drain level above limit 171
- Indoor unit malfunction of capacity determination device 172
- Applicable models all indoor unit models 173
- Defect of indoor unit pc board 173
- Defect of thermistor r2t for liquid pipe 173
- Indoor unit malfunction of thermistor r2t for heat exchanger 173
- Malfunction decision conditions 173
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 173
- Method of malfunction detection 173
- Refer to thermistor resistance temperature characteristics table on p277 173
- Remote controller display 173
- Supposed causes 173
- Troubleshooting 173
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 173
- Applicable models all indoor unit models 174
- Defect of indoor unit pc board 174
- Defect of indoor unit thermistor r3t for gas pipe 174
- Indoor unit malfunction of thermistor r3t for gas pipes 174
- Malfunction decision conditions 174
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 174
- Method of malfunction detection 174
- Refer to thermistor resistance temperature characteristics table on p277 174
- Remote controller display 174
- Supposed causes 174
- Troubleshooting 174
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 174
- Applicable models aii indoor unit models 175
- Defect of indoor unit pc board 175
- Defect of indoor unit thermistor r1t for air inlet 175
- Indoor unit malfunction of thermistor r1t for suction air 175
- Malfunction decision conditions 175
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 175
- Method of malfunction detection 175
- Refer to thermistor resistance temperature characteristics table on p277 175
- Remote controller display 175
- Supposed causes 175
- Troubleshooting 175
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 175
- Indoor unit malfunction of thermostat sensor in remote controller 176
- Outdoor unit pc board defect 177
- Outdoor unit actuation of high pressure switch 178
- 1 voltage measurement point 179
- 2 refer to pressure sensor pressure voltage characteristics table on p279 179
- Abnormal drop of low pressure lower than 0 7mpa 179
- Abnormality is detected by the pressure value with the low pressure sensor 179
- Applicable models rxyq8 30my1k e ylk e 179
- Defect of low pressure sensor 179
- Defect of outdoor unit pc board 179
- Error is generated when the low pressure is dropped under specific pressure 179
- Malfunction decision conditions 179
- Method of malfunction detection 179
- Outdoor unit actuation of low pressure sensor 179
- Remote controller display 179
- Stop valve is not opened 179
- Supposed causes 179
- Troubleshooting 179
- Applicable models rxyq8 30my1k e ylk e 180
- Compressor lock 180
- Faulty inverter pc board 180
- High differential pressure 0 mpa or more 180
- Incorrect uvwn wiring 180
- Inverter pc board takes the position signal from uvwn line connected between the inverter and compressor and detects the position signal pattern 180
- Malfunction decision conditions 180
- Method of malfunction detection 180
- Outdoor unit compressor motor lock 180
- Remote controller display 180
- Stop valve is left in closed 180
- Supposed causes 180
- 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 180
- Troubleshooting 180
- Outdoor unit std compressor motor overcurrent lock 181
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 182
- Note abnormal case 182
- Si39 502a troubleshooting by indication on the remote controller 182
- The current sensor value is 0 during std compressor operation 182
- The current sensor value is more than 15 a during std compressor operation 182
- Troubleshooting 182
- Troubleshooting 171 182
- Applicable models rxyq8 30my1k e ylk e 183
- Clearing condition operate for 5 minutes normal 183
- Fan does not run due to foreign matters tangled 183
- Malfunction decision conditions 183
- Malfunction of fan motor 183
- Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs 183
- Method of malfunction detection 183
- Outdoor unit malfunction of outdoor unit fan motor 183
- Remote controller display 183
- Supposed causes 183
- The harness connector between fan motor and pc board is left in disconnected or faulty connector 183
- Troubleshooting 183
- When connector detecting fan speed is disconnected 183
- When malfunction is generated 4 times the system shuts down 183
- When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met 183
- Note refer check 1 2 and 3 to p 3 184
- Si39 502a troubleshooting by indication on the remote controller 184
- Troubleshooting 184
- Troubleshooting 173 184
- Applicable models rxyq8 30my1k e ylk e 185
- Check disconnection of connector check continuity of expansion valve coil 185
- Defect of connecting cable 185
- Defect of moving part of electronic expansion valve 185
- Defect of outdoor unit pc board a1p 185
- Error is generated under no common power supply when the power is on 185
- Malfunction decision conditions 185
- Method of malfunction detection 185
- Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 185
- Remote controller display 185
- Supposed causes 185
- Troubleshooting 185
- 1 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 186
- Continuity no continuity 186
- Normal 186
- Outdoor unit abnormal discharge pipe temperature 187
- Outdoor unit refrigerant overcharged 188
- Abnormal fan motor signal circuit malfunction 189
- Applicable models rxyq8 30my1k e ylk e 189
- Broken short or disconnection connector of fan motor connection cable 189
- Detection of abnormal signal from fan motor 189
- Disconnect connector x2a and measure the following resistance 189
- Fan inverter pc board malfunction 189
- In case of detection of abnormal signal at starting fan motor 189
- Malfunction decision conditions 189
- Method of malfunction detection 189
- Outdoor unit abnormal outdoor fan motor signal 189
- Remote controller display 189
- Supposed causes 189
- Troubleshooting 189
- Applicable models rxyq8 30my1k e ylk e 190
- Defect of outdoor unit pc board a1p 190
- Defect of thermistor r1t for outdoor air 190
- Malfunction decision conditions 190
- Method of malfunction detection 190
- Outdoor unit malfunction of thermistor r1t for outdoor air 190
- Refer to thermistor resistance temperature characteristics table on p277 190
- Remote controller display 190
- Supposed causes 190
- The abnormal detection is based on current detected by current sensor 190
- The alarm indicator is displayed when the fan only is being used also 190
- Troubleshooting 190
- When the outside air temperature sensor has short circuit or open circuit 190
- Applicable models rxyq8 30my1k e ylk e 191
- Faulty current sensor 191
- Faulty outdoor unit pc board 191
- Malfunction decision conditions 191
- Malfunction is detected according to the current value detected by current sensor 191
- Method of malfunction detection 191
- Outdoor unit current sensor malfunction 191
- Remote controller display 191
- Supposed causes 191
- Troubleshooting 191
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 191
- Applicable models rxyq8 30my1k e ylk e 192
- Defect of outdoor unit pc board a1p 192
- Defect of thermistor r31t or r32t for outdoor unit discharge pipe 192
- Malfunction decision conditions 192
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 192
- Method of malfunction detection 192
- Outdoor unit malfunction of discharge pipe thermistor r3 r31 or 32t 192
- Refer to thermistor resistance temperature characteristics table on p278 192
- Remote controller display 192
- Supposed causes 192
- The alarm indicator is displayed when the fan is being used also 192
- Troubleshooting 192
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 192
- Applicable models rxyq8 30my1k e ylk e 193
- Defect of outdoor unit pc board a1p 193
- Defect of thermistor r2t for outdoor unit suction pipe 193
- Malfunction decision conditions 193
- Malfunction is detected from the temperature detected by the suction pipe temperature thermistor 193
- Method of malfunction detection 193
- Outdoor unit malfunction of thermistor r2t for suction pipe 193
- Refer to thermistor resistance temperature characteristics table on p277 193
- Remote controller display 193
- Supposed causes 193
- Troubleshooting 193
- When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 193
- Applicable models rxyq8 30my1k e ylk e 194
- Defect of outdoor unit pc board a1p 194
- Defect of thermistor r4t for outdoor unit coil 194
- Malfunction decision conditions 194
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 194
- Method of malfunction detection 194
- Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger deicer 194
- Refer to thermistor resistance temperature characteristics table on p277 194
- Remote controller display 194
- Supposed causes 194
- Troubleshooting 194
- When a short circuit or an open circuit in the heat exchange thermistor is detected 194
- Applicable models rxyq8 30my1k e ylk e 195
- Faulty outdoor unit pc board 195
- Faulty receiver outlet liquid pipe thermistor r6t 195
- Malfunction decision conditions 195
- Malfunction is detected according to the temperature detected by receiver outlet liquid pipe thermistor 195
- Method of malfunction detection 195
- Outdoor unit malfunction of receiver outlet liquid pipe thermistor r6t 195
- Refer to thermistor resistance temperature characteristics table on p277 195
- Remote controller display 195
- Supposed causes 195
- Troubleshooting 195
- When the receiver outlet liquid pipe thermistor is short circuited or open 195
- Applicable models rxyq8 30my1k e ylk e 196
- Faulty outdoor unit pc board 196
- Faulty subcooling heat exchanger gas pipe thermistor r5t 196
- Malfunction decision conditions 196
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 196
- Method of malfunction detection 196
- Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 196
- Refer to thermistor resistance temperature characteristics table on p277 196
- Remote controller display 196
- Supposed causes 196
- Troubleshooting 196
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 196
- 1 voltage measurement point 197
- 2 refer to pressure sensor pressure voltage characteristics table on p279 197
- Applicable models rxyq8 30my1k e ylk e 197
- Connection of low pressure sensor with wrong connection 197
- Defect of high pressure sensor system 197
- Defect of outdoor unit pc board 197
- Malfunction decision conditions 197
- Malfunction is detected from the pressure detected by the high pressure sensor 197
- Method of malfunction detection 197
- Outdoor unit malfunction of high pressure sensor 197
- Remote controller display 197
- Supposed causes 197
- Troubleshooting 197
- When the discharge pipe pressure sensor is short circuit or open circuit 197
- Outdoor unit malfunction of low pressure sensor 198
- Actuation of fin thermal actuates above 98 c 199
- Applicable models rxyq8 30my1k e ylk e 199
- Defect of fin thermistor 199
- Defect of inverter pc board 199
- Fin temperature is detected by the thermistor of the radiation fin 199
- Malfunction decision conditions 199
- Method of malfunction detection 199
- Outdoor unit malfunction of inverter radiating fin temperature rise 199
- Refer to thermistor resistance temperature characteristics table on p277 199
- Remote controller display 199
- Supposed causes 199
- Troubleshooting 199
- When the temperature of the inverter radiation fin increases above 98 c 199
- Applicable models rxyq8 30my1k e ylk e 200
- Compressor start up malfunction mechanical lock 200
- Defect of compressor coil disconnected defective insulation 200
- Defect of inverter pc board 200
- Higher voltage than actual is displayed when the inverter output voltage is checked by tester 200
- Malfunction decision conditions 200
- Malfunction is detected from current flowing in the power transistor 200
- Method of malfunction detection 200
- Outdoor unit inverter compressor abnormal 200
- Remote controller display 200
- Supposed causes 200
- Troubleshooting compressor inspection 200
- When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 200
- Applicable models rxyq8 30my1k e ylk e 201
- Compressor coil disconnected 201
- Compressor overload 201
- Defect of inverter pc board 201
- Malfunction decision conditions 201
- Malfunction is detected by current flowing in the power transistor 201
- Method of malfunction detection 201
- Outdoor unit inverter current abnormal 201
- Remote controller display 201
- Supposed causes 201
- Troubleshooting output current check 201
- When overload in the compressor is detected inverter secondary current 15 a 201
- Applicable models rxyq8 30my1k e ylk e 202
- Defect of compressor 202
- Defect of inverter pc board 202
- Malfunction decision conditions 202
- Malfunction is detected from current flowing in the power transistor 202
- Method of malfunction detection 202
- Outdoor unit inverter start up error 202
- Pressure differential start 202
- Remote controller display 202
- Supposed causes 202
- Troubleshooting 202
- When overload in the compressor is detected during startup inverter secondary current 15 a 202
- Outdoor unit malfunction of transmission between inverter and control pc board 203
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 204
- Si39 502a troubleshooting by indication on the remote controller 204
- Troubleshooting 204
- Troubleshooting 193 204
- Applicable models rxyq8 30my1k e ylk e 205
- Defect of inverter pc board 205
- Defect of k1m 205
- Defect of main circuit capacitor 205
- Imbalance in supply voltage is detected in pc board 205
- Improper main circuit wiring 205
- Malfunction decision conditions 205
- Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button 205
- Method of malfunction detection 205
- Open phase 205
- Outdoor unit inverter over ripple protection 205
- Remote controller display 205
- Supposed causes 205
- Troubleshooting 205
- Voltage imbalance between phases 205
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status 205
- Outdoor unit malfunction of inverter radiating fin temperature rise sensor 206
- 1 refer to thermistor resistance temperature characteristics table on p277 2 refer to pressure sensor pressure voltage characteristics table on p279 207
- Applicable models rxyq8 30my1k e ylk e 207
- Defect of outdoor unit pc board a1p 207
- Defect of pressure sensor 207
- Defect of thermistor r2t or r4t 207
- Malfunction decision conditions 207
- Malfunction is not decided while the unit operation is continued 207
- Method of malfunction detection 207
- Microcomputer judge and detect if the system is short of refrigerant 207
- Out of gas or refrigerant system clogging incorrect piping 207
- Outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 207
- Remote controller display 207
- Short of gas malfunction is detected by discharge pipe temperature thermistor 207
- Supposed causes 207
- Troubleshooting 207
- Applicable models rxyq8 30my1k e ylk e 208
- Defect of outdoor pc board a1p 208
- Malfunction decision conditions 208
- Method of malfunction detection 208
- Phase outdoor unit only 208
- Power supply open phase 208
- Power supply reverse phase 208
- Remote controller display 208
- Reverse phase open phase 208
- Supposed causes 208
- The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 208
- Troubleshooting 208
- When a significant phase difference is made between phases 208
- Outdoor unit power supply insufficient or instantaneous failure 209
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 210
- Is the voltage of power supply 380 415v 210
- K2 magnetic relay in pc board a2p 210
- Si39 502a troubleshooting by indication on the remote controller 210
- Troubleshooting 210
- Troubleshooting 199 210
- Outdoor unit check operation not executed 211
- Malfunction of transmission between indoor units 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 502a 213
- Applicable models all models of indoor units 214
- Connection of two main remote controllers when using 2 remote controllers 214
- Defect of indoor unit pc board 214
- Defect of remote controller pc board 214
- 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 214
- Indoor unit malfunction of transmission between remote controller and indoor unit 214
- Malfunction decision conditions 214
- Malfunction of indoor unit remote controller transmission 214
- Malfunction of transmission caused by noise 214
- Method of malfunction detection 214
- Normal transmission does not continue for specified period 214
- Remote controller display 214
- Supposed causes 214
- Troubleshooting 214
- Indoor unit malfunction of transmission between outdoor units 215
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 216
- Si39 502a troubleshooting by indication on the remote controller 216
- Troubleshooting 216
- Troubleshooting 205 216
- Applicable models all models of indoor units 217
- Connection between sub remote controllers 217
- Defect of remote controller pc board 217
- 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 217
- Indoor unit malfunction of transmission between main and sub remote controllers 217
- Malfunction decision conditions 217
- Malfunction of transmission between main and sub remote controller 217
- Method of malfunction detection 217
- Normal transmission does not continue for specified period 217
- Remote controller display 217
- Supposed causes 217
- Troubleshooting 217
- Indoor unit malfunction of transmission between indoor and outdoor units in the same system 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 502a 219
- A difference occurs in data by the type of refrigerant between indoor and outdoor units the number of indoor units is outside of the allowable range 220
- Applicable models all models of indoor unit rxyq8 30my1k e ylk e remote controller 220
- Defect of outdoor unit pc board a1p 220
- Excess of connected indoor units 220
- Improper combination of indoor and outdoor units indoor unit and remote controller 220
- Malfunction decision conditions 220
- Method of malfunction detection 220
- Mismatching of the refrigerant type of indoor and outdoor unit 220
- Remote controller display 220
- Setting of outdoor pc board was not conducted after replacing to spare parts pc board 220
- Supposed causes 220
- The malfunction decision is made as soon as either of the abnormalities aforementioned is detected 220
- The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit 220
- Troubleshooting 220
- Address duplication of centralized controller 221
- Malfunction of transmission between centralized controller and indoor unit 222
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 223
- Troubleshooting 223
- Troubleshooting by indication on the remote controller si39 502a 223
- Applicable models all models of indoor units rxyq8 30my1k e ylk e 224
- Defect of indoor unit pc board 224
- Failure to execute check operation 224
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 224
- Malfunction decision conditions 224
- Method of malfunction detection 224
- Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 224
- On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature 224
- Remote controller display 224
- Stop valve is left in closed 224
- Supposed causes 224
- System is not set yet 224
- The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 224
- Troubleshooting 224
- Applicable models all models of indoor units rxyq8 30my1k e ylk e 225
- Defect of indoor unit pc board 225
- Defect of outdoor unit pc board a1p 225
- Detect an indoor unit with no address setting 225
- Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 225
- Malfunction decision conditions 225
- Malfunction of system refrigerant system address undefined 225
- Method of malfunction detection 225
- Remote controller display 225
- Supposed causes 225
- The malfunction decision is made as soon as the abnormality aforementioned is detected 225
- Troubleshooting 225
- Pc board defect 226
- Troubleshooting op central remote controller 226
- Applicable models central remote controller 227
- Defect of pc board of optional controllers for centralized control 227
- Detect the malfunction according to diii net transmission data the system will be automatically reset 227
- Malfunction decision conditions 227
- Malfunction of transmission between optional controllers for centralized control 227
- Method of malfunction detection 227
- Remote controller display 227
- Supposed causes 227
- Troubleshooting 227
- When no master controller is present at the time of the startup of slave controller when the centralized controller which was connected once shows no response 227
- Improper combination of optional controllers for centralized control 228
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 229
- Troubleshooting 229
- Troubleshooting op central remote controller si39 502a 229
- Address duplication improper setting 230
- Malfunction of transmission between centralized controller and indoor unit 231
- Troubleshooting op schedule timer 231
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 232
- Si39 502a troubleshooting op schedule timer 232
- Troubleshooting 232
- Troubleshooting 221 232
- Pc board defect 233
- Applicable models schedule timer 234
- Defect of pc board of optional controllers for centralized control 234
- Detect the malfunction according to diii net transmission data the system will be automatically reset 234
- Malfunction decision conditions 234
- Malfunction of transmission between optional controllers for centralized control 234
- Method of malfunction detection 234
- Remote controller display 234
- Supposed causes 234
- Troubleshooting 234
- When no master controller is present at the time of the startup of slave controller when the optional controllers for centralized controller which was connected once shows no response 234
- Improper combination of optional controllers for centralized control 235
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 236
- Si39 502a troubleshooting op schedule timer 236
- Troubleshooting 236
- Troubleshooting 225 236
- Address duplication improper setting 237
- Operation lamp blinks 238
- Troubleshooting op unified on off controller 238
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 239
- Troubleshooting 239
- Troubleshooting op unified on off controller si39 502a 239
- Display under centralized control blinks repeats single blink 240
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 241
- Troubleshooting 241
- Troubleshooting op unified on off controller si39 502a 241
- Si39 502a troubleshooting op unified on off controller 242
- Troubleshooting 231 242
- Applicable models unified on off controller 243
- Central control address group no is not set for indoor unit 243
- Detect the malfunction according to diii net transmission data 243
- Display under centralized control blinks repeats double blink 243
- Improper control range setting switch 243
- Improper wiring of transmission wiring 243
- Malfunction decision conditions 243
- Method of malfunction detection 243
- Remote controller display 243
- Supposed causes 243
- Troubleshooting 243
- Troubleshooting op unified on off controller si39 502a 243
- Under centralized control repeats double blink 243
- When no central control addresses are set to indoor units when no indoor units are connected within the control range 243
- Check no 1 check on pulse input of position signal of fan inverter pc board 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 244
- Check no 2 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 245
- Check no 3 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 245
- Troubleshooting 245
- Troubleshooting op unified on off controller si39 502a 245
- List of electrical and functional parts 63 246
- Option list 69 246
- Part 7 appendix 246
- Part 7 part 7 part 7 part 7 appendix appendix appendix appendix 246
- Piping diagrams 36 246
- Piping installation point 72 6 selection of pipe size joints and header 75 7 thermistor resistance temperature characteristics 77 8 pressure sensor 79 9 method of replacing the inverter s power transistors and diode modules 80 246
- Wiring diagrams for reference 42 246
- Outdoor unit 247
- Piping diagrams 247
- Rxyq8my1k e ylk e rxyq10my1k e ylk e 247
- Electronic expansion valve filter filter 248
- Flare connectio 248
- Flare connection 248
- Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 248
- Gas piping connection port 248
- Heat exchanger 248
- Indoor unit 248
- Liquid piping connection port 248
- Φ 15 or less attached piping above φ 19 248
- Refrigerant pipe connection port diameters 249
- Connection unit 250
- Fxuq bevq 250
- Indoor unit 250
- Connection unit 251
- Fxaq bevq 251
- Indoor unit 251
- Connection unit 252
- Fxlq bevq 252
- Indoor unit 252
- Outdoor unit 253
- Rxyq8my1k e ylk e rxyq10my1k e ylk e 253
- Wiring diagrams for reference 253
- Field wiring 254
- Rxyq8my1k e ylk e rxyq10my1k e ylk e 254
- Rxyq16my1k e ylk e rxyq18my1k e ylk e rxyq20my1k e ylk e 255
- Rxyq24my1k e ylk e rxyq26my1k e ylk e rxyq28my1k e ylk e rxyq30my1k e ylk e 256
- Fxcq20m 25m 32m 63mve 257
- Indoor unit 257
- Fxcq40m 50m 80m 125mve 258
- Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 259
- Fxkq25m 32m 40m 63mve 260
- Fxdq20n 25n 32n 40n 50n 63nve with drain pump 261
- Fxdq20n 25n 32n 40n 50n 63nvet without drain pump 262
- Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 263
- Fxmq40m 50m 63m 80m 100m 125mve 264
- Fxmq200m 250mve 265
- Fxhq32m 63m 100mve 266
- Fxaq20m 25m 32m 40m 50m 63mve 267
- Fxlq20m 25m 32m 40m 50m 63mve fxnq20m 25m 32m 40m 50m 63mve 268
- Fxuq71m 100m 125mv1 269
- Fxaq20mh 25mh 32mh 40mh 50mhv1 270
- Fxlq20mh 25mh 32mh 40mh 50mhv1 271
- Bevq50mve 272
- Bevq71m 100m 125mve 273
- List of electrical and functional parts 274
- Outdoor unit 274
- Rxyq8 10my1k e rxyq8 10mylk e 274
- Appendix 275
- C off 87 c on 275
- Indoor side 275
- Indoor unit 275
- List of electrical and functional parts si39 502a 275
- Appendix 265 276
- Only for fxdq20 63nve with drain pump type 276
- Si39 502a list of electrical and functional parts 276
- Appendix 277
- List of electrical and functional parts si39 502a 277
- Appendix 267 278
- K ω 25 c 278
- Si39 502a list of electrical and functional parts 278
- St8602a 6 φ 6 278
- St8605 6 φ 8 278
- Μ f 400v 278
- Appendix 279
- List of electrical and functional parts si39 502a 279
- Thermal protector 130 c off 83 c on 279
- 2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 up to 2 installation boxes can be installed for each indoor unit 5 installation box no 8 is necessary for second adaptor 6 installation box no 8 is necessary for each adaptor 7 this adaptor is required when connecting with optional controller for centralized control 8 brc2a51 is also available various pc boards 280
- Adaptor must be procured on site 280
- Appendix 269 280
- Note 1 installation box no is necessary for each adaptor marked 280
- Note installation box for 280
- Operation control system optional accessories 280
- Option list 280
- Option list of controllers 280
- Si39 502a option list 280
- System configuration 280
- Appendix 281
- Building management system 281
- Is a registered trade mark of echelon corporation 281
- Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 281
- Option list si39 502a 281
- Please refer to option handbook etc for detail 281
- Ppd does not support connection unit series 281
- Appendix 271 282
- Option lists outdoor unit 282
- Rxyq16 30my1k e ylk e 282
- Rxyq8 10my1k e ylk e 282
- Si39 502a option list 282
- Appendix 283
- Pattern 1 283
- Pattern 2 283
- Piping installation point 283
- Piping installation point si39 502a 283
- Prohibited pattern 283
- The outdoor unit multi connection piping kit that is sold separately as an option bhfp22m90 135k is necessary for the multi installation of outdoor units see the installation manual attached to the kit with attention to installation restrictions described in connecting the refrigerant piping when installing 283
- To avoid the risk of oil detention in the piping between the outdoor units must be routed level or slightly upward 283
- To avoid the risk of oil detention in the stopping unit always connect the shutoff valve and the piping between outdoor units as shown in the figure a or figure b 283
- Allowable level difference 284
- Appendix 273 284
- If 2 m or less 284
- If 2 m or more 284
- If the piping length between the outdoor unit connecting pipe kits or between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line within a length of 2 m from the kit 284
- Indoor unit indoor unit 15m or less 284
- Max allowable piping length 284
- Multi connection piping kit indoor unit actual piping length 150m or less equivalent length 175m or less the total extension 510m or less 284
- Note refer to page 276 note 2 in case of up to 90m 284
- Outdoor unit indoor unit 50m or less when an outdoor unit is lower than indoor units 40m or less 284
- Outdoor unit multi connection piping kit actual piping length 10m or less equivalent length 13m or less 284
- Outdoor unit outdoor unit 5m or less 284
- Prohibited pattern 284
- Refnet joint indoor unit actual piping length 40 90 m or less 284
- Si39 502a piping installation point 284
- Example of connection r 410a type rxyq8 30m heat pump 286
- Selection of pipe size joints and header 286
- Indoor units 1 8 287
- Note 1 287
- Note 2 287
- Outdoor unit refnet joint a g 287
- Appendix 277 288
- For gas pipe r3t 288
- For receiver outlet liquid pipe r6t 288
- For suction pipe r4t for receiver gas pipe r5t 288
- Indoor unit for air suction r1t for liquid pipe r2t 288
- Outdoor unit for fin thermistor r1t 288
- Outdoor unit for outdoor air r1t for coil r2t 288
- Si39 502a thermistor resistance temperature characteristics 288
- Thermistor resistance temperature characteristics 288
- Appendix 289
- Outdoor unit thermistors for discharge pipe r3t r31t r32t 289
- Thermistor resistance temperature characteristics si39 502a 289
- Pressure sensor 290
- Before checking disconnect the electric wiring connected to the power transistor and diode module 291
- Decision according to continuity check by analog tester 291
- Electronic circuit 291
- Inverter pc board 291
- Inverter pc board a2p 291
- Method of replacing the inverter s power transistors and diode modules 291
- Part 8 precautions for new refrigerant r 410a 294
- About refrigerant r 410a 295
- 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 295
- Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 295
- Outline 295
- Precautions for new refrigerant r 410a 295
- Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 295
- The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 295
- Precautions for new refrigerant r 410a 285 296
- Si39 502a precautions for new refrigerant r 410a 296
- Thermodynamic characteristic of r 410a 296
- Refrigerant cylinders 297
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 298
- Copper tube material and thickness 298
- O soft annealed h hard drawn 298
- 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 298
- Service tools 298
- Tool compatibility 298
- 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 299
- Differences 2 change of dimension a 299
- Flaring tool 299
- Specifications 2 dimension a 299
- Unit mm 299
- Can not be used 302
- Index index index index 304
- Drawings flow charts 308
- Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 308
- R 410a heat pump 50 60hz for high outdoor temperature use 310
- R 410a heat pump rxyq8 30my1k e ylk e 310
- Rxyq8 30my1k e ylk e 310
- Service manual 310
- Si39 502a 310
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