Hitachi YUTAKI Series - Page 209

207
Troubleshooting procedure
SMGB0066 rev.0 - 12/2009
Troubleshooting
Service Manual
7
TurnOFFpower,diconnect
U,V,Wfromcompressor
terminals and restart. Does the
protectingfunctionactivate?
*1)
Yes
Yes
Yes
Replace ISPM or DIP-IPM
Check ISPM or DIP-IPM
Has been there any
instantaneous drop of
voltage?
No
No
No
Check compressor
Check power supply and
wiring capacity
Replace ISPM or DIP-IPM
A
*1):TurnONtheNo.1switchoftheDIPswitchonISPMwhenrestartingwithdisconnectingtheterminalsofthecompressor.
Aftertroubleshooting,turnOFFtheNo.1switchoftheDIPswitchonISPM.