Troubleshooting
Service Manual
186
Troubleshooting procedure
SMGB0066 rev.0 - 12/2009
• ThealarmcodeisdisplayedonthePCB´sdisplay.
– This alarm code is displayed when the power source phases are reversely connected or one phase is not connected.
Reversephaseconnection?
(Only 3 phases model)
Yes
No
Failure of PCB1 or the power
source voltage too much low
Connect correctly each phase
of the power source
Is there any phase
unconnected?
Yes
No
Connect correctly each phase
of the power source
PCB1 is normal
PCB1 is normal
Voltage for unit to
be suspended
Running voltage:
342 to 456V
Setting voltage:
Less than 323V
Voltage for unit to
be suspended
Running voltage:
207 to 253V
Setting voltage:
Less than 187V
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