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Service Manual
TROUBLESHOOTING
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Alarm
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Yes
Yes
Faulty
Turn OFF power, disconnect
U, V, W from compressor
terminals and restart operation.
Is protecting function
activated? *3)
Check transistor module.
*1) *2)
Normal
No
Is heat exchanger of
outdoor unit clogged?
Replace inverter PCB. *1)
Remove clogging or
replace heat exchanger.
Replace transistor module.
*1) *2)
Yes
Yes
Is silicon grease applied all over
contact surface of transistor module
and radiation fin? Is screw on
transistor module loose?
No
No
No
Apply silicon grease over
entire contact surface of
transistor module and
radiation fin.*4)
Fix screw correctly.*4)
Check inverter PCB. *1)
Check compressor.
Normal
Normal
Replace inverter PCB and
transistor module. *1) *2)
Failure of inverter PCB.
Replace it. *1)
Connect power line to
Current Transformer (CT2).
Yes
(It trips immediately.)
No (It trips after a certain period.)
To Next Page
Restart operation.
Does it trip soon?
Is power line connected
to Current Transformer (CT2)?
Abnormal
Abnormal
(Itc=1, 12)
(Itc=21)
Replace compressor.
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Содержание YVAHP072B31S
Страница 2: ......
Страница 10: ...viii Service Manual ...
Страница 16: ......
Страница 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Страница 559: ...Service Manual 1 543 INSTALLATION 7 7RXFK DFN WR QLVK WKLV VHWWLQJ The screen returns to the Service Menu screen 7 ...
Страница 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
Страница 920: ......
Страница 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Страница 983: ...Service Manual 2 63 OPERATION Clipped Ceiling Type Grille for Front Discharge 2SWLRQDO Decorative Panel 2SWLRQDO ...
Страница 1184: ...2 264 Service Manual OPERATION 7 Touch on Return to Group sel to return to Setting Group Selection 7 ...
Страница 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Страница 1425: ...Service Manual 3 111 TROUBLESHOOTING Surge Absorber SA Surge Absorber SA Surge Absorber SA 3RVLWLRQ RI 6XUJH EVRUEHU 9 9 1 1 1 ...
Страница 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Страница 1657: ...Service Manual 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting ...
Страница 1728: ......
Страница 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Страница 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Страница 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
Страница 1795: ......
Страница 1796: ... 2015 Johnson Controls Inc SM 15001 ...