Hitachi YUTAKI Series - Page 211

209
Troubleshooting procedure
SMGB0066 rev.0 - 12/2009
Troubleshooting
Service Manual
7
 


• Thecompressorstopswhenthetemperatureofthethermistorforinverterfinexcess100ºC,andrestartsautomatically
in 3 minuntes.
• Thealarmappearsafter3retriesduring30minutes.

1*):Performthehighvoltagedischargeworkbyreferringtothesection"Checkingprocedureformainparts"before
checking and replacing the inverter components.
No
Replace the dipIPM or
ISPM.*1)
Restart the operation.
Doesittripsoon?
Yes
Remove the clogging
Is the air side heat
exchanger of the
outdoorunitclogged?
FaultyDipIPMorISPM,or
thermistor.
Replace it.
No
Is thermistor short circuit or
faulty?
No
Yes
Replace the thermistor
Yes