![Daikin FHK35FJV1 [97/244] Equipment operates but does not provide cooling](/img/pdf.png)
Daikin FHK35FJV1 [97/244] Equipment operates but does not provide cooling
![Daikin FHK35FJV1 [97/244] Equipment operates but does not provide cooling](/views2/1764299/page97/bg61.png)
Troubleshooting Based on Equipment Condition Si-71A
86 Troubleshooting
3.6 Equipment Operates but does not Provide Cooling.
Applicable Model
All models of Skyair series
Error Detection
Method
Error Generating
Condition
Possible Cause
„
Overcurrent relay (for compressor)
„
Compressor protection thermostat
„
Overcurrent relay may act due to the following reasons
Lower voltage of power supply
Excess level of high pressure
Insufficient capacity of power cable
Malfunction of compressor
„
Compressor protection thermostat may act due to the following reasons
Internal leakage of four-way valve (There is no difference between inlet and outlet temperature)
Insufficient compression of compressor
Incorrect refrigerant
Faulty expansion valve
Insufficient circulation of refrigerant
Troubleshooting
Measure the temperature of
suction air and discharge air.
Temperature difference =
Suction air temp. – Discharge
air temp.
Possible causes as follows
* Incorrect selection of model
* Affection of direct sun
* Clogged air filter
* Soiled heat exchanger
* Malfunction of fan motor
Possible causes as follows
* Refrigerant overcharge
* Soiled heat exchanger
* Short circuit of discharge air
* Disturbing item in air flow
* Malfunction of fan motor of
outdoor unit
Possible causes as follows
* Insufficient compression of
compressor
* Insufficient circulation of
refrigerant
* Faulty expansion valve
Gas shortage possibly
generates trouble.
Normal.
Additional unit installation should be
considered
After vacuum drying, charge correct
amount of refrigerant.
Check each section
Check each item
Check each item
Temperature
difference for cooling
should be between
8 and 18 ˚C.
Does
any frost generate
around inlet port of
indoor unit heat exchanger
or outlet port of
expansion
valve?
Is the
operation current
less than specified
level?
Does indoor
unit discharge flow
rate down?
Is the level
of high pressure higher
than normal level?
Does the
heat load increase
after installation
of the unit?
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
(SF035)
Содержание
- Fhyc140kve models r71 100kval r125ktal models 1
- L addition of fuy fvy l fay fa 1
- Manual 1
- Service 1
- Si 71a 1
- Skyair r y k series 1
- Air conditioners 2
- Cooling only 2
- Heat pump 2
- Skyair r y k f series 2
- Split system 2
- Duw 4 psuryhg 3rlqwv dqg xqfwlrqv 111111111111111111111111111111111111111114 3
- Duw 5 5hprwh rqwuroohu 2shudwlrq 111111111111111111111111111111111111111111111 3
- Duw 6 sodqdwlrq ri lhog 6hw 1111111111111111111111111111111111111111111111111114 3
- Duw 7 sodqdwlrq ri xqfwlrq 2shudwlrq 111111111111111111111111111111111178 3
- Electric function parts 3 3
- Existence of dip switch jumper and bs 2 3
- Function details 2 3
- Function outline 6 3
- Introduction vii 3
- Method of field set reset after maintenance inspection repair 8 3
- New models functions 3
- Operation flowchart ry71 140k 9 3
- Present model s functions 3
- Settings concerning maintenance 0 3
- Thermistor temperature and resistance conversion table 1 3
- Wired remote controller 0 3
- Wireless remote controller 2 3
- Wireless remote controller 4 3
- Duw 8 7urxeohvkrrwlqj 111111111111111111111111111111111111111111111111111111111111111 8 4
- How to handle request for maintenance 0 4
- Maintenance inspections 7 4
- Procedure of self diagnosis by led 7 4
- Procedure of self diagnosis by remote controller 2 4
- Troubleshooting based on equipment condition 1 4
- Troubleshooting by remote controller display led display 8 4
- Duw 9 5hprydo 3urfhgxuh 11111111111111111111111111111111111111111111111111111111458 5
- For fay71f a 63 5
- For fhy71f 42 5
- For fhyc71k 27 5
- For fuy71 100 125fj 53 5
- For fvy71l 125l 73 5
- For r y 71k 80 5
- Duw sshqgl 11111111111111111111111111111111111111111111111111111111111111111111111114 4 6
- Piping diagrams 92 6
- Qgh 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111 l 6
- Udzlqjv orz kduwv 1111111111111111111111111111111111111111111111111111111111111111 y 6
- Wiring diagram 03 6
- Caution in repair 8
- Introduction 8
- Safety cautions 8
- Warning 8
- Caution 9
- Cautions regarding products after repair 9
- Introduction si 71a 9
- Warning 9
- Caution 10
- Inspection after repair 10
- Si 71a introduction 10
- Warning 10
- Caution 11
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 11
- Introduction si 71a 11
- Using icons 11
- Using icons list 11
- Cooling only 13
- Cooling only and heat pump 13
- Holding functions 13
- Improved points and functions 13
- New models functions 13
- New models functions si 71a 13
- No functions 13
- Note 1 fay71 100fave are able to connect to r71kval and r100kval only in k series 13
- Heat pump 14
- Holiding functions no functions 14
- Improved points and functions 14
- Improved points and functions 3 14
- Si 71a 1999 new models functions 14
- Cooling only 15
- Cooling only and heat pump 15
- Holding functions 15
- Improved points and functions 15
- No functions 15
- Present model s functions 15
- Present model s functions si 71a 15
- Holding functions 16
- Improved points and functions 5 16
- No functions 16
- O improved points and functions 16
- Si 71a present model s functions 16
- Heat pump 17
- Holiding functions 17
- Improved points and functions 17
- No functions 17
- Present model s functions si 71a 17
- Holiding functions 18
- Improved points and functions 18
- Improved points and functions 7 18
- No functions 18
- Si 71a present model s functions 18
- Remote controller operation 21
- Wired remote controller 21
- Wired remote controller si 71a 21
- Fig1 2 23
- Remote controller operation 23
- Wireless remote controller 23
- Wireless remote controller si 71a 23
- Fig1 2 25
- Remote controller operation 25
- Wireless remote controller 25
- Wireless remote controller si 71a 25
- Existence of dip switch jumper and bs 2 28
- Explanation of field set 28
- Method of field set 28
- Part 3 28
- Reset after maintenance inspection repair 28
- Settings concerning maintenance 28
- Explanation 29
- Method of field set 29
- Reset after maintenance inspection repair 29
- Explanation of field set 19 30
- Field setting 30
- Procedure 30
- Si 71a method of field set reset after maintenance inspection repair 30
- Wired remote controller 30
- Explanation of field set 31
- Method of field set reset after maintenance inspection repair si 71a 31
- Procedure 31
- Wireless remote controller 31
- Explanation of field set 21 32
- Initial setting contents 32
- Note a heat pump type indoor unit is used for cooling only twin system in case of using ceiling mounted cassette and ceiling suspended types 32
- Si 71a method of field set reset after maintenance inspection repair 32
- Example 33
- Explanation of field set 33
- Local setting mode no 33
- Method of field set reset after maintenance inspection repair si 71a 33
- Notes 1 setting is made in all units in a group to set for individual indoor units or to check the setting use the mode nos with 2 in upper digit in parentheses 2 the setting position no is set to 01 at the factory except for the following cases in which 02 is set setting of air flow direction adjustment range automatic restart after power outage remote control thermostat filter sign indication only for ceiling mounted duct type 3 when installing sky air simultaneous operation multi unit set to either twin or triple only when the factory setting is changed it is necessary to make a setting using a remote controller 4 for further details see the installation instruction 5 since drafts may result carefully select the installation location 6 when power returns units resume the settings made before the power outage 33
- To set the filter sign time to filter contamination heavy for all units in a group set mode no to 10 setting switch no to 0 and setting position no to 02 33
- Explanation of field set 23 34
- Si 71a method of field set reset after maintenance inspection repair 34
- Ceiling type setting switch for air flow adjustment 35
- Detailed explanation of setting modes 35
- Example 35
- Explanation of field set 35
- If using as twin system switch the second code no according to the number of units connected as given in the table below the second code no is factory set to 01 no of connected units 1 35
- In the case of fhyc 35 to 71 class 35
- In the case of fuy 35
- Make the following setting according to the ceiling height the setting position no is set to 01 at the factory in the case of fhy and fay 35
- Method of field set reset after maintenance inspection repair si 71a 35
- No of connected twin system indoor units 35
- Note 1 if set incorrectly a connection mistake malfunction remote controller display ua will result 3 minutes after turning the power on is required for detection 2 if different models are used in combination designate the unit that is equipped with the most functions as the main unit 35
- Note triple is only for r y 140k series 35
- Setting table 35
- Air flow direction setting 36
- Explanation 36
- Explanation of field set 25 36
- Filter sign setting 36
- If several wireless remote controller units are used together in the same room including the case where both group control and individual remote controller control are used together be sure to set the addresses for the receiver and wireless remote controller for group control see the attached installation manual for the indoor unit if using together with a wired remote controller you have to change the main sub setting or the receiver 36
- If switching the filter sign on time set as given in the table below set time 36
- In the case of fhyc 100 to 140 class 36
- 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 36
- Setting table 36
- Setting the receiver 36
- Si 71a method of field set reset after maintenance inspection repair 36
- Through the small opening on the back of the receiver set the wireless address switch ss2 on the printed circuit board according to the table below 36
- When using both a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to main therefore set the main sub switch ss1 of the receiver to sub 36
- Wireless setting address and main sub setting 36
- Explanation of field set 37
- Method of field set reset after maintenance inspection repair si 71a 37
- Setting the address of wireless remote controller it is factory set to 1 37
- After setting 38
- Explanation of field set 27 38
- Fan speed off when thermostat is off 38
- Multiple settings a b 38
- Precautions set the unit no of the receiver and the wireless remote controller to be equal if the setting differs the signal from the remote controller cannot be transmitted 1 do not use any settings not listed in the table 2 for group control with a wireless remote controller initial settings for all the indoor units of the group are equal for group control refer to the installation manual attached to the indoor unit for group control 38
- Setting table 38
- Si 71a method of field set reset after maintenance inspection repair 38
- Stick the unit no label at decoration panel air discharge outlet as well as on the back of the wireless remote controller 38
- When the cool heat thermostat is off you can stop the indoor unit fan by switching the setting to fan off used as a countermeasure against odor for barber shops and restaurants 38
- When the indoor is being operating by outside control central remote controller etc it sometimes does not respond to on off and temperature setting commands from this remote controller check what setting the customer wants and make the multiple setting as shown below 38
- 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 39
- Explanation of field set 39
- Fan speed changeover when thermostat is off 39
- Insert a screwdriver into the recess between the upper and lower part of remote controller and working from the 2 positions pry off the upper part the remote controller pc board is attached to the upper part of remote controller 39
- Insert the screwdriver here and gently work off the upper part of remote controller 2 tum the main sub changeover switch on one of the two remote controller pc boards to s leave the switch of the other remote controller set to m 39
- Main sub setting when using 2 remote controllers 39
- Method of field set reset after maintenance inspection repair si 71a 39
- Procedure 39
- Set the switch on the remote controller s pc board control by 2 remote controllers controlling 1 indoor unit with 2 remote controllers when using 2 remote controllers one of either the control panel or the separate remote controller must be set to main and the other to sub main sub changeover 39
- Setting table 39
- Urtra long life filter sign setting 39
- When a urtra long life filter is installed the filter sign timer setting must be changed 39
- Centralized group no setting 40
- Centralized group no setting by remote controller 40
- Explanation of field set 29 40
- Group no setting example 40
- Si 71a method of field set reset after maintenance inspection repair 40
- Indoor unit pcb 41
- Settings concerning maintenance 41
- Outdoor unit switches setting jumper 51
- Existence of dip switch jumper and bs 53
- Existence of dip switch jumper and bs si 71a 53
- Explanation of field set 53
- Note note 1 dip switch and bs detail 53
- Note note 2 bs button pump down forced defrosting pressing the bs button forcibly operates the air conditioner in the cooling mode 1 to conduct a pump down operation sending refrigerant to outdoor unit press the bs button to forcibly operate the equipment in the cooling mode then operate the unit for about 1 minute to stabilize the system after stabilizing system close the liquid pipe stop valve on the outdoor unit and after the pressure decreases and the low pressure switch activates close the gas pipe stop valve 2 forced defrost to activate the defrost operation during the heating operation press the bs button this will activate the forced defrost operation cooling operation when the defrost cancel conditions are met the equipment automatically switches off the defrost operation 53
- Reference table 53
- Concerning emergency operation 54
- During emergency heating operation defrosting is carried out for 3 minutes every hour 4 way valve and outdoor unit fan are turned off 54
- Emergency operation 54
- Emergency operation of indoor units 54
- Emergency operation of outdoor units 54
- Explanation of field set 43 54
- If a safety device should be actuated during emergency operation all actuators are turned off if you reset after waiting for 3 minutes operation will start again emergency operation cannot be carried out if the pc board itself is defective 54
- Method of switching in time of emergency 54
- Note 1 do not operate from remote controller during emergency operation 2 operate the switch only when the power supply is turned off 54
- Note for emergency operation be sure to set emergency operation for both the indoor and outdoor units do not attempt to operate the equipment from the remote controller during emergency operation emergency operation is computer controlled and therefore cannot be carried out if the microcomputer is not operating properly 54
- Si 71a existence of dip switch jumper and bs 54
- The table below contains a list of actuators for manually operating the equipment in time of emergency 54
- Turn off the power supply and set the emergency switch to heat for heating or cool for cooling operation will be started manually when you turn the power back on heat cannot be set for a cooling only air conditioner 54
- You can operate the system manually by changing the setting of the emergency switch ss1 on the indoor unit s pc board from normal to emergency when switched however the equipment cannot regulate temperature the table below contains a list by model of actuators for manually operating indoor units in time of emergency 54
- Enter the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 2 enter the maintenance mode after having entered the field set mode continue to push the inspection test operation button for a minimum of 4 seconds 3 select the mode no set the desired mode no with the up down temperature setting button 4 select the unit no select the indoor unit no set with the time mode start stop button 5 carry out the necessary settings for each mode modes 41 44 and 45 see the table below for details 6 enter the setting contents modes 44 and 45 enter by pushing the timer on off button 7 return to the normal operation mode tap the inspection test operation button one time 55
- Existence of dip switch jumper and bs si 71a 55
- Explanation of field set 55
- Maintenance mode setting 55
- Procedure 55
- Explanation of function operation 57
- Fh y c fh y fay fuy 57
- Function outline 57
- Function outline si 71a 57
- Indoor unit 57
- Explanation of function operation 47 58
- Fh y k fh y b fhy f fvy l 58
- Si 71a function outline 58
- All models 59
- Explanation of function operation 59
- Function outline si 71a 59
- Note items indicated by 1 are not available for cooling only air conditioners 59
- Outdoor unit 59
- Cooling program dry operation 60
- Explanation of function operation 49 60
- Operation flowchart ry71 140k 60
- Si 71a operation flowchart ry71 140k 60
- Explanation of function operation 61
- Note for items indicated with reference section numbers 5 through 5 9 see the explanation of outdoor unit functions detail on pages 65 through 72 61
- Operation flowchart ry71 140k si 71a 61
- Explanation of function operation 51 62
- Heating 62
- Si 71a operation flowchart ry71 140k 62
- Explanation of function operation 63
- Note for items indicated with reference section numbers 5 through 5 9 see the explanation of outdoor unit functions and operations on pages 65 through 72 63
- Operation flowchart ry71 140k si 71a 63
- Drawing no given inside brackets 64
- Electric function parts 64
- Explanation of function operation 53 64
- Fh y b f 64
- Fh y c kve kv1c 64
- Fh y f 64
- Fh y k f j 64
- Indoor unit 64
- Si 71a electric function parts 64
- Drawing no given inside brackets 65
- Electric function parts si 71a 65
- Explanation of function operation 65
- Fay fa 65
- Explanation of function operation 55 66
- Fuy fj 66
- Si 71a electric function parts 66
- Electric function parts si 71a 67
- Explanation of function operation 67
- Figures inside parentheses are for e unit anti corrosion specifications 67
- Outdoor unit 67
- Explanation of function operation 57 68
- Si 71a electric function parts 68
- Electric function parts si 71a 69
- Explanation of function operation 69
- Figures inside parentheses are for e unit anti corrosion specifications 69
- Explanation of function operation 59 70
- Figures inside parentheses are for e unit anti corrosion specifications 70
- Si 71a electric function parts 70
- Electric function parts si 71a 71
- Explanation of function operation 71
- Figures inside parentheses are for e unit anti corrosion specifications 71
- Explanation of function operation 61 72
- Si 71a thermistor temperature and resistance conversion table 72
- Thermistor temperature and resistance conversion table 72
- Function details 73
- Indoor unit 73
- Air flow volume shift control 74
- Draft avoidance control 2 74
- Explanation of function operation 63 74
- Freeze prevention control 74
- Outdoor unit identification function 74
- Si 71a function details 74
- Auto restart function 75
- Caution when performing maintenance and the power supply is to be shut off be sure to turn the remote controller s on off switch off first 75
- Explanation of function operation 75
- Fan and flap operations 75
- Function details si 71a 75
- If there is a power cut when the unit is operating it will automatically resume the same operating mode when the power is restored 75
- Shutting the power supply switch off while the on off switch is still on is dangerous because the power failure automatic reset function will cause the indoor fan to start turning immediately or the outdoor unit fan to automatically start turning three minutes after the power supply is turned back on 75
- 4 way valve control 76
- Compressor shutdown operation 76
- Explanation of function operation 65 76
- Operation stop and thermostat control 76
- Outdoor unit 76
- Si 71a function details 76
- Thermostat control 76
- Abnormally high discharge pipe temperature 77
- Discharge pipe high temperature thermostat off control 77
- Discharge pipe temperature 77
- Electronic expansion valve control 77
- Electronic expansion valve initialize 77
- Emergency operation 77
- Explanation of function operation 77
- Function details si 71a 77
- Hps lps detection function 77
- Lack of gas malfunction 77
- T2 disconnection thermostat off control 77
- Wet operation protection control 77
- Cooling start control 78
- Explanation of function operation 67 78
- High pressure protection control in cooling operation 78
- If the outdoor air thermistor and outdoor unit heat exchange thermistor are malfunctioning simulated operation is carried out while malfunction is displayed on the remote controller stops due to malfunction if the discharge pipe thermistor is defective 78
- Outdoor unit fan tap 78
- Si 71a function details 78
- Simulated operation function 78
- The starting air flow volume is varied at a startup according to the outside air temperature ta condition to prevent a rise in the high pressure and a drop in the low pressure 78
- The thermostat turns off immediately before hps activation according to the outdoor unit heat exchanger temperature tc to prevent shutdown due to an error in cooling only units the motorized valve is controlled to maintain tc at 53 c or lower optimum discharge pipe temperature control 78
- Time chart 78
- Units operate with the starting air flow volume for up to 3 minutes 78
- Explanation of function operation 79
- Freeze prevention control 79
- Function details si 71a 79
- In the case of r y j 79
- Explanation of function operation 69 80
- Fan control 80
- In the case of r y 140k 80
- Low outside temperature control in cooling operation year round cooling 80
- Si 71a function details 80
- Solenoid valve control in cooling operation 80
- Explanation of function operation 81
- Fan start control in heating operation 81
- Function details si 71a 81
- High pressure protection control in heating operation 81
- Outdoor unit heat exchanger temperature tc 30 c off condition in range 2 or t2 tc r 18 c 81
- Solenoid valve control in the case of r y 140 k 81
- The starting air flow volume is varied as shown below according to the outside air temperature condition 81
- The thermostat turns off immediately before hps activation according to the indoor unit heat exchanger temperature tc to prevent shutdown due to an abnormality control is provided to maintain tc at 53 c 81
- Units operate with the starting air flow volume for up to 5 minutes when the outside air temperature is 10 c or lower the air flow volume stays at h for the first 5 seconds if it is switched from off to l outdoor unit fan startup compensation control lps is not detected for 3 minutes after startup 81
- Outdoor unit fan control heating overload frosting prevention control 82
- Defrost starting conditions 83
- Defrosting 83
- Explanation of function operation 83
- Function details si 71a 83
- Control 84
- Explanation of function operation 73 84
- Si 71a function details 84
- Explanation of function operation 85
- Function details si 71a 85
- Duw 8 3duw 8 3duw 8 3duw 8 7urxeohvkrrwlqj 7urxeohvkrrwlqj 7urxeohvkrrwlqj 7urxeohvkrrwlqj 86
- How to handle request for maintenance 0 86
- Maintenance inspections 7 86
- Procedure of self diagnosis by led 7 86
- Procedure of self diagnosis by remote controller 2 86
- Troubleshooting based on equipment condition 1 86
- Troubleshooting by remote controller display led display 8 86
- During or after maintenance when the power supply is turned back on operation restarts automatically by the auto restart function please exercise the proper caution 88
- Guide lines for optimal operation condition 88
- Maintenance inspections 88
- Note figures given inside parentheses are in unit of kg cm² 88
- Optimal operation condition 88
- Si 71a maintenance inspections 88
- Standard conditions 88
- The operation value guide lines when operating under standard conditions by pushing the test run button on the remote controller are as given in the table below ry71 125k are used as example outdoor units in the table indoor unit fan h operation 88
- Troubleshooting 77 88
- Correlation of air conditioner s operation status and pressure running current 89
- Maintenance inspections si 71a 89
- Note 1 1 water in the refrigerant freezes inside the capillary tube or expansion valve and is basically the same phenomenon as pump down 2 2 dirt in the refrigerant clogs filters inside the piping and is basically the same phenomenon as pump down 3 3 pressure differential between high and low pressure becomes slight 89
- Troubleshooting 89
- What happens in comparison to normal values is summarized in the table below measured from 15 20 minutes or more after operation starts 89
- When cooling 89
- When heating 89
- Refrigerant saturation curve 90
- Si 71a maintenance inspections 90
- Troubleshooting 79 90
- Find out the situation according to the following procedure when there is a request for service from the customer 91
- Flow chart 91
- How to handle request for maintenance 91
- How to handle request for maintenance si 71a 91
- Troubleshooting 91
- Si 71a troubleshooting based on equipment condition 92
- Troubleshooting 81 92
- Troubleshooting based on equipment condition 92
- All models of skyair series 93
- Applicable model 93
- Equipment does not operate 93
- Error detection method 93
- Error generating condition 93
- Fuse blown or disorder of contact in operation circuit faulty operation switch or contact point faulty high pressure switch faulty magnetic switch for fan motor activation or fault of overcurrent relay for fan motor faulty overcurrent relay for compressor faulty compressor protection thermostat insufficient insulation in electric system faulty contact point of magnetic switch for compressor malfunction of compressor 93
- Possible causes 93
- Troubleshooting 93
- Troubleshooting based on equipment condition si 71a 93
- All models of skyair series 94
- Applicable model 94
- Error detection method 94
- Error generating condition 94
- Fan operates but compressor does not 94
- Faulty remote controller faulty magnetic switch for compressor 94
- Possible causes 94
- Si 71a troubleshooting based on equipment condition 94
- Troubleshooting 94
- Troubleshooting 83 94
- All models of skyair series 95
- Applicable model 95
- Cooling heating operation starts but stops immediately 95
- Error detection method 95
- Error generating condition 95
- Excess charge of refrigerant air intrudes into refrigerant system faulty pressure switch faulty magnetic switch for outdoor unit fan motor faulty aux relay for outdoor unit fan motor soiled heat exchanger of outdoor unit there is an interfering item in air flow of outdoor unit malfunction of outdoor unit fan soiled air filter of indoor unit soiled heat exchanger of indoor unit there is some interfering item in airflow of indoor unit malfunction of indoor unit fan 95
- Possible cause 95
- Troubleshooting 95
- Troubleshooting based on equipment condition si 71a 95
- After equipment shuts down it cannot be restarted for a while 96
- All models of skyair series 96
- Applicable model 96
- Error detection method 96
- Error generating condition 96
- Overcurrent relay for compressor compressor protection thermostat overcurrent relay may act due to the following reasons lower voltage of power supply excess level of high pressure insufficient capacity of power cable malfunction of compressor compressor protection thermostat may act due to the following reasons internal leakage of four way valve there is no difference between inlet and outlet temperature insufficient compression of compressor incorrect refrigerant faulty expansion valve insufficient circulation of refrigerant 96
- Possible cause 96
- Si 71a troubleshooting based on equipment condition 96
- Troubleshooting 96
- Troubleshooting 85 96
- All models of skyair series 97
- Applicable model 97
- Equipment operates but does not provide cooling 97
- Error detection method 97
- Error generating condition 97
- Overcurrent relay for compressor compressor protection thermostat overcurrent relay may act due to the following reasons lower voltage of power supply excess level of high pressure insufficient capacity of power cable malfunction of compressor compressor protection thermostat may act due to the following reasons internal leakage of four way valve there is no difference between inlet and outlet temperature insufficient compression of compressor incorrect refrigerant faulty expansion valve insufficient circulation of refrigerant 97
- Possible cause 97
- Troubleshooting 97
- Troubleshooting based on equipment condition si 71a 97
- All models of skyair series 98
- Applicable model 98
- Equipment operates but does not provide heating 98
- Error detection method 98
- Error generating condition 98
- Excess charge of refrigerant air intrudes into refrigerant system faulty pressure switch faulty magnetic switch for outdoor unit fan motor faulty aux relay for outdoor unit fan motor soiled heat exchanger of outdoor unit there is an interfering item in air flow of outdoor unit malfunction of outdoor unit fan soiled air filter of indoor unit soiled heat exchanger of indoor unit there is some interfering item in airflow of indoor unit malfunction of indoor unit fan 98
- Possible cause 98
- Si 71a troubleshooting based on equipment condition 98
- Troubleshooting 98
- Troubleshooting 87 98
- All models of skyair series 99
- Applicable model 99
- Equipment discharges white mist 99
- Error detection method 99
- Error generating condition 99
- Humid installation site installation site is dirty and with dense oil mists soiled heat exchanger clogged air filter malfunction of fan motor 99
- Possible cause 99
- Troubleshooting 99
- Troubleshooting based on equipment condition si 71a 99
- All models of skyair series 100
- Applicable model 100
- Equipment produces loud noise or shakes 100
- Error detection method 100
- Error generating condition 100
- Excess charge of refrigerant air intrudes into refrigerant system flushing noise due to refrigerant shortage sound of shooee 100
- Possible cause 100
- Si 71a troubleshooting based on equipment condition 100
- Troubleshooting 100
- Troubleshooting 89 100
- All models of skyair series 101
- Applicable model 101
- Carpet spread room animal s hair 101
- Equipment discharges dust 101
- Error detection method 101
- Error generating condition 101
- Possible cause 101
- Troubleshooting 101
- Troubleshooting based on equipment condition si 71a 101
- All models of skyair series 102
- Applicable model 102
- Error detection method 102
- Error generating condition 102
- Possible cause 102
- Remote controller lcd displays 102
- Si 71a troubleshooting based on equipment condition 102
- Troubleshooting 102
- Troubleshooting 91 102
- Explanation 103
- Procedure of self diagnosis by remote controller 103
- Procedure of self diagnosis by remote controller si 71a 103
- The inspection test button 103
- Troubleshooting 103
- Self diagnosis by wired remote controller 104
- Fault diagnosis by wireless remote controller 105
- Procedure 105
- Procedure of self diagnosis by remote controller si 71a 105
- Troubleshooting 105
- In the case of the shaded error codes inspection is not displayed the system operates but be sure to inspect and repair it 107
- Note 1 operation when a malfunction occurs may differ according to the model 107
- Procedure of self diagnosis by remote controller si 71a 107
- Remote controller display malfunction code and contents 107
- Troubleshooting 107
- Foreword 108
- General precautions when performing maintenance 108
- Procedure of self diagnosis by led 108
- Si 71a procedure of self diagnosis by led 108
- Troubleshooting 97 108
- Troubleshooting by led on the indoor unit s 108
- Troubleshooting by led on the outdoor unit s pc board 108
- Ñ ò ó 108
- Ñ ó ó 108
- Explanation for symbols 109
- Troubleshooting 109
- Troubleshooting by remote controller display led display 109
- Troubleshooting by remote controller display led display si 71a 109
- Indoor unit 110
- Malfunction code and led display table 110
- Note 1 the asterisk indicates variety of circumstances 2 no h2p for dedicated cooling only model 35 60 class 110
- Outdoor unit 110
- Si 71a troubleshooting by remote controller display led display 110
- Troubleshooting 99 110
- Ñ ò ò 110
- Ñ ò ó 110
- Ñ ó ò 110
- Ñ ó ó 110
- System 111
- Troubleshooting 111
- Troubleshooting by remote controller display led display si 71a 111
- Ñ ó ò 111
- 4 4 4 4 112
- Failure of indoor unit pc board 112
- 6 6 6 6 113
- Applicable models 113
- By float switch off detection 113
- Failure of drain pump improper drain piping work drain piping clogging failure of float switch failure of indoor unit pc board failure of short circuit connector 113
- Fh y c fh y k fh y b fh y fay fvy fuy 113
- Malfunction decision conditions 113
- Malfunction of drain water level system float type 113
- Method of malfunction detection 113
- Remote controller display 113
- Supposed causes 113
- Troubleshooting 113
- Troubleshooting by remote controller display led display si 71a 113
- When rise of water level is not a condition and the float switch goes off 113
- 9 9 9 9 114
- Applicable models 114
- Detection by failure of signal for detecting number of turns to come from the fan motor 114
- Failure of indoor unit fan motor broken or disconnected wire failure of contact failure of indoor unit pc board 114
- Fh y fay fuy 114
- Indoor unit fan motor lock 114
- Malfunction decision conditions 114
- Method of malfunction detection 114
- Remote controller display 114
- Si 71a troubleshooting by remote controller display led display 114
- Supposed causes 114
- Troubleshooting 114
- Troubleshooting 103 114
- When number of turns can t be detected even when output voltage to the fan is maximum 114
- Applicable models 115
- Failure of motor failure of microswitch failure of connector connection failure of indoor unit pc board 115
- Fh y c fh y k fh y fay fvy fuy 115
- Malfunction decision conditions 115
- Method of malfunction detection 115
- Remote controller display 115
- Supposed causes 115
- Swing flap motor malfunction lock 115
- Troubleshooting 115
- Troubleshooting by remote controller display led display si 71a 115
- Utilizes on off of the limit switch when the motor turns 115
- When on off of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time about 30 seconds 115
- Applicable models 116
- Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the ic memory on the indoor unit pc board and whether the value is normal or abnormal is determined 116
- Failure of capacity setting 116
- Failure of capacity setting adaptor connection failure of indoor unit pc board 116
- Fh y c fh y fuy fay 116
- Malfunction decision conditions 116
- Method of malfunction detection 116
- Note capacity is factory set in the data ic on the pc board a capacity setting adaptor that matches the capacity of the unit is required in the following case if the indoor pc board installed at the factory is for some reason changed at the installation site the capacity will not be contained in the replacement pc board if you connect a capacity setting adaptor to a pc board in which the capacity is memorized the capacity setting for the pc board will become the capacity setting of the adaptor priority of capacity setting adaptor 116
- Operation and 1 when the capacity code is not contained in the pc board s memory and the capacity setting adaptor is not connected 2 when a capacity that doesn t exist for that unit is set 116
- Remote controller display 116
- Si 71a troubleshooting by remote controller display led display 116
- Supposed causes 116
- Troubleshooting 116
- Troubleshooting 105 116
- 7 7 7 7 117
- All indoor unit models 117
- Applicable models 117
- Failure of the sensor itself broken or disconnected wire failure of electronic circuitry indoor unit pc board failure of connector contact 117
- Malfunction decision conditions 117
- Malfunction detection is carried out by temperature detected by heat exchanger sensor 117
- Malfunction of heat exchange temperature sensor system 117
- Method of malfunction detection 117
- Note measure the resistance while referring to the thermistor temperature and resistance conversion table thermistor temperature and resistance conversion table 117
- Remote controller display 117
- Supposed causes 117
- Troubleshooting 117
- Troubleshooting by remote controller display led display si 71a 117
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 117
- Aii indoor unit models 118
- Applicable models 118
- Failure of the sensor itself broken or disconnected wire failure of indoor unit pc board failure of connector contact 118
- Malfunction decision conditions 118
- Malfunction detection is carried out by temperature detected by suction air temperature sensor 118
- Malfunction of suction air temperature sensor system 118
- Method of malfunction detection 118
- Note measure the resistance while referring to the thermistor temperature and resistance conversion table thermistor temperature and resistance conversion table 118
- Remote controller display 118
- Si 71a troubleshooting by remote controller display led display 118
- Supposed causes 118
- Troubleshooting 118
- Troubleshooting 107 118
- When the suction air temperature sensor s thermistor becomes disconnected or shorted while the unit is running 118
- 3 3 3 3 119
- Actuation of safety device 119
- Applicable models 119
- Method of malfunction detection 119
- Outdoor unit led display 119
- Remote controller display 119
- Supposed causes 119
- Troubleshooting 119
- Troubleshooting by remote controller display led display si 71a 119
- 6 6 6 6 120
- Applicable models 120
- High pressure system hps malfunction 120
- Malfunction decision conditions 120
- Method of malfunction detection 120
- Outdoor unit led display 120
- Romote controller display 120
- Si 71a troubleshooting by remote controller display led display 120
- Supposed causes 120
- Troubleshooting 120
- Troubleshooting 109 120
- 7 7 7 7 121
- Applicable models 121
- Low pressure system lps malfunction 121
- Malfunction decision conditions 121
- Method of malfunction detection 121
- Outdoor unit led display 121
- Remote controller display 121
- Supposed causes 121
- Troubleshooting 121
- Troubleshooting by remote controller display led display si 71a 121
- A h1p ýýý 1 h2p 2 h3p 122
- Applicable models 122
- Failure of electronic expansion valve electronic expansion valve s harness is broken or disconnected failure of electronic expansion valve s connector connection failure of outdoor unit pc board outside cause noise etc 122
- Malfunction decision conditions 122
- Malfunction is determined by the following condition coil current open circuit normal short circuit 122
- Malfunction of electronic expansion valve 122
- Method of malfunction detection 122
- Outdoor unit led display 122
- Remote controller display 122
- Si 71a troubleshooting by remote controller display led display 122
- Supposed causes 122
- Troubleshooting 122
- Troubleshooting 111 122
- With electronic expansion valve malfunction detection coil current is detected and open and short circuits are detected 122
- 6 6 6 6 123
- Applicable models 123
- Discharge pipe temperature malfunction 123
- Malfunction decision conditions 123
- Method of malfunction detection 123
- Outdoor unit led display 123
- Remote controller display 123
- Supposed causes 123
- Troubleshooting 123
- Troubleshooting by remote controller display led display si 71a 123
- 6 6 6 6 124
- Applicable models 124
- Malfunction decision conditions 124
- Malfunction of high pressure switch 124
- Method of malfunction detection 124
- Outdoor unit led display 124
- Remote controller display 124
- Si 71a troubleshooting by remote controller display led display 124
- Supposed causes 124
- Troubleshooting 124
- Troubleshooting 113 124
- Applicable models 125
- Malfunction decision conditions 125
- Malfunction of outdoor temperature sensor system 125
- Outdoor unit led display 125
- Remote controller display 125
- Supposed causes 125
- Troubleshooting 125
- Troubleshooting by remote controller display led display si 71a 125
- Troublshooting 125
- 6 6 6 6 126
- Applicable models 126
- Malfunction decision conditions 126
- Malfunction of discharge pipe temperature sensor system 126
- Outdoor unit led display 126
- Remote controller display 126
- Si 71a troubleshooting by remote controller display led display 126
- Supposed causes 126
- Troubleshooting 126
- Troubleshooting 115 126
- 9 9 9 9 127
- Applicable models 127
- Malfunction decision conditions 127
- Malfunction of heat exchanger temperature sensor system 127
- Outdoor unit led display 127
- Remote controller display 127
- Supposed causes 127
- Troubleshooting 127
- Troubleshooting by remote controller display led display si 71a 127
- 8 3 8 3 8 3 128
- Lack of gas malfunction 128
- 8 4 8 4 8 4 129
- Reverse phase 129
- 8 7 8 7 8 7 130
- A h1p ýýý 1 h2p 2 h3p 130
- Applicable models 130
- Diagnosis of incorrect or broken disconnected wiring if the leds on the indoor unit pc board are off it indicates that the transmission wiring between indoor and outdoor units may be incorrect or broken disconnected 130
- Led display 130
- Malfunction decision conditions 130
- Malfunction of transmission between indoor and outdoor unit 130
- Method of malfunction detection 130
- Microcomputer checks if transmission between indoor and outdoor units is normal 130
- Remote controller display 130
- Si 71a troubleshooting by remote controller display led display 130
- Supposed causes 130
- Troubleshooting 1 130
- Troubleshooting 119 130
- When transmission is not carried out normally for a certain amount of time 130
- Wiring indoor outdoor transmission wire is incorrect failure of indoor unit pc board failure of outdoor unit pc board outside cause noise etc 130
- Troubleshooting 131
- Troubleshooting 2 131
- Troubleshooting by remote controller display led display si 71a 131
- 8 8 8 8 8 8 132
- A h1p ýýý 1 h2p 2 h3p 132
- Applicable models 132
- Failure of remote controller failure of indoor pc board outside cause noise etc connection of 2 master remote controllers when using 2 remote controllers 132
- Led display 132
- Malfunction decision conditions 132
- Malfunction of transmission between indoor unit and remote controller 132
- Method of malfunction detection 132
- Microcomputer checks if transmission between indoor unit and remote controller is normal 132
- Remote controller display 132
- Si 71a troubleshooting by remote controller display led display 132
- Supposed causes 132
- Troubleshooting 132
- Troubleshooting 121 132
- When transmission is not carried out normally for a certain amount of time 132
- All models of indoor unit 133
- Applicable models 133
- 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 133
- Led display 133
- Malfunction decision conditions 133
- Method of malfunction detection 133
- Normal transmission does not continue for specified period 133
- Refer to page 133
- Remote controller display 133
- Supposed causes 133
- Transmission error between main remote controller and sub remote controller 133
- Transmission error between main remote controller and sub remote controller connection among sub remote controllers faulty remote controller pcb 133
- Troubleshooting 133
- Troubleshooting by remote controller display led display si 71a 133
- A h1p ýýý 1 h2p 2 h3p 134
- Applicable models 134
- Failure of field setting switch 134
- Failure of indoor or outdoor unit pc board failure of power supply pc board indoor outdoor indoor indoor unit transmission wiring failure of remote controller wiring 134
- Led display 134
- Note 1 refer no of connected twin system indoor units on page 24 134
- Remote controller display 134
- Si 71a troubleshooting by remote controller display led display 134
- Standard models 134
- Supposed causes 134
- Troubleshooting 134
- Troubleshooting 123 134
- Duw 9 3duw 9 3duw 9 3duw 9 5hprydo 3urfhgxuh 5hprydo 3urfhgxuh 5hprydo 3urfhgxuh 5hprydo 3urfhgxuh 136
- For fay71f a 63 136
- For fhy71f 42 136
- For fhyc71k 27 136
- For fuy71 100 125fj 53 136
- For fvy71l 125l 73 136
- For r y 71k 80 137
- For fhyc71k 138
- Procedure 138
- Removal of switch box cover 138
- Removal procedure 127 138
- Si 71a for fhyc71k 138
- Warning be sure to turn off all power supplies before disassembling work 138
- For fhyc71k si 71a 139
- Procedure 139
- Removal of fan motor 139
- Removal procedure 139
- Warning be sure to turn off all power supplies before disassembling work 139
- Procedure 140
- Removal of suction grille 140
- Removal procedure 129 140
- Si 71a for fhyc71k 140
- Warning be sure to turn off all power supplies before disassembling work 140
- For fhyc71k si 71a 141
- Procedure 141
- Removal of air filter 141
- Removal procedure 141
- Warning be sure to turn off all power supplies before disassembling work 141
- Procedure 142
- Removal of decoration cover 142
- Removal procedure 131 142
- Si 71a for fhyc71k 142
- Warning be sure to turn off all power supplies before disassembling work 142
- For fhyc71k si 71a 143
- Procedure 143
- Removal of decoration panel 143
- Removal procedure 143
- Warning be sure to turn off all power supplies before disassembling work 143
- Procedure 144
- Removal of horizontal vane 144
- Removal procedure 133 144
- Si 71a for fhyc71k 144
- Warning be sure to turn off all power supplies before disassembling work 144
- For fhyc71k si 71a 145
- Removal procedure 145
- Remove the 14 screws on the two remaining sides and open the covers 145
- Procedure 146
- Removal of swing motor 146
- Removal procedure 135 146
- Si 71a for fhyc71k 146
- Warning be sure to turn off all power supplies before disassembling work 146
- For fhyc71k si 71a 147
- Removal procedure 147
- Procedure 148
- Removal of switch box cover 148
- Removal procedure 137 148
- Si 71a for fhyc71k 148
- Warning be sure to turn off all power supplies before disassembling work 148
- For fhyc71k si 71a 149
- Procedure 149
- Removal of fan motor 149
- Removal procedure 149
- Warning be sure to turn off all power supplies before disassembling work 149
- Procedure 150
- Removal of drain pan 150
- Removal procedure 139 150
- Si 71a for fhyc71k 150
- Warning be sure to turn off all power supplies before disassembling work 150
- For fhyc71k si 71a 151
- Procedure 151
- Removal of drain pump and drain hose 151
- Removal procedure 151
- Warning be sure to turn off all power supplies before disassembling work 151
- Removal procedure 141 152
- Si 71a for fhyc71k 152
- For fhy71f 153
- For fhy71f si 71a 153
- Procedure 153
- Removal of air filter and suction grille 153
- Removal procedure 153
- Warning be sure to turn off all power supplies before disassembling work 153
- Procedure 154
- Removal of electrical parts and pc boards 154
- Removal procedure 143 154
- Si 71a for fhy71f 154
- Warning be sure to turn off all power supplies before disassembling work 154
- For fhy71f si 71a 155
- Removal procedure 155
- Procedure 156
- Removal of horizontal blade 156
- Removal procedure 145 156
- Si 71a for fhy71f 156
- Warning be sure to turn off all power supplies before disassembling work 156
- For fhy71f si 71a 157
- Procedure 157
- Removal of fan rotor an motor 157
- Removal procedure 157
- Warning be sure to turn off all power supplies before disassembling work 157
- Removal procedure 147 158
- Si 71a for fhy71f 158
- For fhy71f si 71a 159
- Procedure 159
- Removal of fan bearing 159
- Removal procedure 159
- Warning be sure to turn off all power supplies before disassembling work 159
- Procedure 160
- Removal of bottom panel and drain pan 160
- Removal procedure 149 160
- Si 71a for fhy71f 160
- Warning be sure to turn off all power supplies before disassembling work 160
- For fhy71f si 71a 161
- Removal procedure 161
- Removal procedure 151 162
- Si 71a for fhy71f 162
- For fhy71f si 71a 163
- Procedure 163
- Removal of swing motor 163
- Removal procedure 163
- Warning be sure to turn off all power supplies before disassembling work 163
- For fuy71 100 125fj 164
- Procedure 164
- Removal of air filter 164
- Removal procedure 153 164
- Si 71a for fuy71 100 125fj 164
- Warning be sure to turn off all power supplies before disassembling work 164
- For fuy71 100 125fj si 71a 165
- Procedure 165
- Removal of suction grille 165
- Removal procedure 165
- Warning be sure to turn off all power supplies before disassembling work 165
- Procedure 166
- Removal of fan 166
- Removal procedure 155 166
- Si 71a for fuy71 100 125fj 166
- Warning be sure to turn off all power supplies before disassembling work 166
- For fuy71 100 125fj si 71a 167
- Removal procedure 167
- Procedure 168
- Removal of fan motor 168
- Removal procedure 157 168
- Si 71a for fuy71 100 125fj 168
- Warning be sure to turn off all power supplies before disassembling work 168
- For fuy71 100 125fj si 71a 169
- Procedure 169
- Removal of drain pan 169
- Removal procedure 169
- Warning be sure to turn off all power supplies before disassembling work 169
- Removal procedure 159 170
- Si 71a for fuy71 100 125fj 170
- For fuy71 100 125fj si 71a 171
- Procedure 171
- Removal of drain pump 171
- Removal procedure 171
- Warning be sure to turn off all power supplies before disassembling work 171
- Procedure 172
- Removal of swing motor 172
- Removal procedure 161 172
- Si 71a for fuy71 100 125fj 172
- Warning be sure to turn off all power supplies before disassembling work 172
- For fuy71 100 125fj si 71a 173
- Procedure 173
- Removal of air flow control blade 173
- Removal procedure 173
- Warning be sure to turn off all power supplies before disassembling work 173
- For fay71f a 174
- Procedure 174
- Removal of air filter 174
- Removal procedure 163 174
- Si 71a for fay71f a 174
- Warning be sure to turn off all power supplies before disassembling work 174
- For fay71f a si 71a 175
- Procedure 175
- Removal of slide panel operation display cover and front grille 175
- Removal procedure 175
- Warning be sure to turn off all power supplies before disassembling work 175
- Procedure 176
- Removal of electrical parts box 176
- Removal procedure 165 176
- Si 71a for fay71f a 176
- Warning be sure to turn off all power supplies before disassembling work 176
- For fay71f a si 71a 177
- Procedure 177
- Removal of pc board 177
- Removal procedure 177
- Warning be sure to turn off all power supplies before disassembling work 177
- Procedure 178
- Removal of swing louvre unit 178
- Removal procedure 167 178
- Si 71a for fay71f a 178
- Warning be sure to turn off all power supplies before disassembling work 178
- For fay71f a si 71a 179
- Procedure 179
- Removal of fan motor 179
- Removal procedure 179
- Warning be sure to turn off all power supplies before disassembling work 179
- Procedure 180
- Removal of drain pan 180
- Removal procedure 169 180
- Si 71a for fay71f a 180
- Warning be sure to turn off all power supplies before disassembling work 180
- For fay71f a si 71a 181
- Removal procedure 181
- Procedure 182
- Removal of heat exchanger 182
- Removal procedure 171 182
- Si 71a for fay71f a 182
- Warning be sure to turn off all power supplies before disassembling work 182
- For fay71f a si 71a 183
- Procedure 183
- Removal of fan rotor 183
- Removal procedure 183
- Warning be sure to turn off all power supplies before disassembling work 183
- For fvy71l 125l 184
- Procedure 184
- Removal of suction grille and air filter 184
- Removal procedure 173 184
- Si 71a for fvy71l 125l 184
- Warning be sure to turn off all power supplies before disassembling work 184
- For fvy71l 125l si 71a 185
- Removal procedure 185
- Procedure 186
- Removal of electric parts and remote controller 186
- Removal procedure 175 186
- Si 71a for fvy71l 125l 186
- Warning be sure to turn off all power supplies before disassembling work 186
- For fvy71l 125l si 71a 187
- Removal procedure 187
- Procedure 188
- Removal of fan rotor and fan motor 188
- Removal procedure 177 188
- Si 71a for fvy71l 125l 188
- Warning be sure to turn off all power supplies before disassembling work 188
- For fvy71l 125l si 71a 189
- Procedure 189
- Removal of swing motor 189
- Removal procedure 189
- Warning be sure to turn off all power supplies before disassembling work 189
- Be sure to remove heat exchanger before cleaning it 190
- Procedure 190
- Removal of heat exchanger 190
- Removal procedure 179 190
- Si 71a for fvy71l 125l 190
- Warning be sure to turn off all power supplies before disassembling work 190
- For r y 71k 191
- For r y 71k si 71a 191
- Procedure 191
- Removal of external casing 191
- Removal procedure 191
- Warning be sure to turn off all power supplies before disassembling work 191
- Procedure 192
- Removal of outdoor unit fan and fan motor 192
- Removal procedure 181 192
- Si 71a for r y 71k 192
- Warning be sure to turn off all power supplies before disassembling work 192
- For r y 71k si 71a 193
- Removal procedure 193
- Procedure 194
- Removal of outdoor unit pc board 194
- Removal procedure 183 194
- Si 71a for r y 71k 194
- Warning be sure to turn off all power supplies before disassembling work 194
- For r y 71k si 71a 195
- Procedure 195
- Removal of electrical parts box 195
- Removal procedure 195
- Warning be sure to turn off all power supplies before disassembling work 195
- Removal procedure 185 196
- Si 71a for r y 71k 196
- For r y 71k si 71a 197
- Procedure 197
- Removal of electronic expansion valve and solenoid valve 197
- Removal procedure 197
- Warning be sure to turn off all power supplies before disassembling work 197
- Procedure 198
- Removal of 4 way valve and coil 198
- Removal procedure 187 198
- Si 71a for r y 71k 198
- Waring be sure to turn off all power supplies before disassembling work 198
- For r y 71k si 71a 199
- Procedure 199
- Removal of compressor 199
- Removal procedure 199
- Warning be sure to turn off all power supplies before disassembling work 199
- Removal procedure 189 200
- Si 71a for r y 71k 200
- Piping diagrams 203
- Indoor unit 214
- Wiring diagram 214
- Appendix 207 218
- Fhyc35kve fhyc140kve 218
- Si 71a wiring diagram 218
- Outdoor units 50hz 227
- Outdoor units 60hz 231
- Appendix 233
- D000105a 233
- D014725 233
- Note 2 233
- R125ktal 233
- R140ktal 233
- Wiring diagram si 71a 233
- Outdoor unit heat pump 234
- Qgh qgh qgh qgh 238
- Xphulfv 238
- Udzlqjv orz kduwv udzlqjv orz kduwv udzlqjv orz kduwv udzlqjv orz kduwv 242
- Xphulfv 242
- L for further improvement specifications or designs are subject to change without prior notice 244
- Printed in japan 09 1999 ak 244
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