Hitachi YUTAKI Series - Page 189

187
Troubleshooting procedure
SMGB0066 rev.0 - 12/2009
Troubleshooting
Service Manual
7
 



• ThealarmcodeisdisplayedonthePCB´sdisplay.
• Thealarmappearsafter3retriesduring30minutes.
 – Thisalarmcodeisdisplayedwhenthevoltagebetweenterminal"P"and"N"ofDIP-IPMisinsufcient.


warning
Electrical hazard. Risk of electrical shock. Be extremely carefull because of the high voltage - .
Is the Power Supply voltage
230V±10%?
No
Yes
No
Yes
Is connection correctly
between DIP-IPM and
capacitors(CB1andCB2),
DCLorCMC?
No
No
Yes
Does LED201 on DIP-
IPM ON after compressor´s
magnetic contactor (CMC)
turnON?
*1):Ifthecapacitorhasahighvoltage,performthehigh-voltagedischargepocedure.
Refer to section RHUE-(3~6)AVHN: "Procedure for checking the DIP-IPM".
*2):CheckingproceduresofthediodemodulearedisplayedinitemRHUE-(3~6)
AVHN: "Procedure for checking the DIP-IPM".
Restart the operation
Is the voltage over 187V
duringoperation?
Yes
Does the voltage fall during
the operation because of the
operationofotherapparatus?
Yes
No
No
IstheDCvoltageover240V?
Check the wiring and the
cable capacity
Check the wiring DIP-IPM
andcapacitors(CB1,2)*2).
Incasethewiringiscorrect,
replace the DIP-IPM
Faulty DIP-IPM. Replace it.
Checkcapacitors(CB1,2).
Yes
Normal
Faulty
Replace the capacitors.
Capacitors have high voltage.
Beextremelycarefull*1).
Connect correctly.
How is the
compressor
operation?
Faulty DIP-IPM.
Replace it.
Compressor stops when
frequency increases.
(Aprox. 20 Hz to 60 Hz)
Compressor stops
immediately.
(Lower than 20 Hz)
Frequency can increase
higher than 60 Hz