Hitachi YUTAKI Series - Page 206

Troubleshooting
Service Manual
204
Troubleshooting procedure
SMGB0066 rev.0 - 12/2009
 


• ThealarmcodeisdisplayedonthePCB´sdisplay
• Thecompressorstopsandrestartsautomaticallyin3minutes.
• Thealarmappearsafter3retriesduring30minutes.
– This alarm code is displayed when the frequency of the compressor is maintained at 15~18 Hz after the compressor
isstarted,oneoftheabsolutevaluesoftherunningcurrentateachphaseU+,U-,V+andV-islessthan1.5A
(including 1.5A).


warning
Electrical hazard. Risk of electrical shock. Before checking and replacing the inverter parts perform the high -
voltage discharge procedure by referring to section "Checking procedure for main parts".
How is the compressor
operation when you restart
thecompressor?
No
Are the outputs of the ISPM
and/orDIP-IPMcorrect?
No
Yes
Is the coil resistance of the
compressornormal?
Restart the operation
Replace the ISPM or DIP-IPM
Replace the ISPM or DIP-IPM
Compressor does not
operate.
P17 is displayed
The compressor stops
inmediatelly.
(nearly 18Hz)
Power supply cables for the
compressor are not passing
through CT. Pass the wires
through CT.
Replace the compressor