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11-5. TROUBLESHOOTING FLOW
Is the voltage balanced?
Disconnect the connector between
compressor and the intelligent
power module
(IPM)/ IGBT module (IC700)/ power module
(IPM). 1.
Replace the inverter P.C. board.
Check the voltage between terminals.
Check the compressor.
See 11-5. “Check of compressor”.
No
Yes
See 11-5. “Check of open phase”.
A How to check inverter/compressor
Refer to 11-5. “Check of compressor
operation time”.
Does the compressor operate continuously?
Refer to 11-5. “Check of compressor start failure”.
OK.
No
Yes
Refer to 11-5. “Check of compressor
winding”.
Is the compressor normal?
Replace the compressor.
No
Yes
B Check of open phase
C Check of compressor
●
With the connector between the compressor and the intelligent
power module (IPM)/ IGBT module (IC700)/ power module
(IPM) disconnected, activate the inverter and check if the inverter is normal by measuring
the balance of voltage
between
the terminals. 1.
Output voltage is 50 - 130 V. (The voltage may differ according to the tester.)
<< Operation method>>
Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit. (TEST RUN OPERA-
TION: Refer to 8-3.)
<<Measurement point>>
At 3 points
BLK (U)-WHT (V)
BLK (U)-RED (W)
WHT(V)-RED (W)
NOTE
: 1. Output voltage varies according to power supply voltage.
2. Measure the voltage by analog type tester.
3. During this check, LED of the inverter P.C. board
fl
ashes 9 times. (Refer to 11-6.1.)
Measure AC voltage between the lead wires at 3 points.
1.
Intelligent power module (IPM):
MUZ-GE25VA -
A1
, MUZ-GE35/50VA
IGBT module (IC700):
MUZ-GE60/71/80VAD
Power module (IPM):
Other models
OBH532E
Содержание MUZ-GE25VA-a1
Страница 15: ...15 MUZ GE25VA A1 MUZ GE35VA WIRING DIAGRAM 6 OBH532E ...
Страница 16: ...16 MUZ GE33VA OBH532E ...
Страница 17: ...17 MUZ GE25VA A2 MUZ GE35VA2 OBH532E ...
Страница 18: ...18 MUZ GE25VAD MUZ GE35VAD OBH532E ...
Страница 19: ...19 MUZ GE42VA OBH532E ...
Страница 20: ...20 MUZ GE42VAD OBH532E ...
Страница 21: ...21 MUZ GE50VA OBH532E ...
Страница 22: ...22 MUZ GE50VA2 OBH532E ...
Страница 23: ...23 MUZ GE50VAD OBH532E ...
Страница 24: ...24 MUZ GE60VA MUZ GE71VA MUZ GE80VA OBH532E ...
Страница 25: ...25 MUZ GE80VA2 OBH532E ...
Страница 26: ...26 MUZ GE60VAD MUZ GE71VAD MUZ GE80VAD OBH532E ...
Страница 95: ...95 OBH532E ...