IV352 Rev.02
Date Issue:
2012-10-27
Page 129 di 232 + FR
Troubleshooting Guideline
Inverter
Failure
Fault Message
Diagnosis and Action
Consistent Fault
Communication problem is defected within the Inverter. If the fault
cannot be cleared after restarting the Inverter, please contact the
service representative.
SCI Failure
Over
Temperature
The ambient temperature of the Inverter is too high. Please improve
the ventilation of the installation environment.
Relay Fault
The relay inside the Inverter is malfunctioned. If the fault cannot be
cleared after restarting the Inverter, please contact the service
representative.
DC INJ High
The Inverter detects high DC component in the AC output current.
Disconnect the AC grid and wait for one minute. If the fault persists
after restarting the Inverter, please contact the service representative.
EEPROM Failure
Memory error is detected. If the fault persists after restarting the
Inverter, please contact the service representative.
High DC Bus
Low DC Bus
The internal bus voltage is abnormal. Please make sure the DC
cables are connected with correct polarity. If the fault persists after
restarting the Inverter, please contact the service representative.
Ref 2.5V Fault
The reference voltage of microprocessor is found abnormal. If the
fault persists after restarting the Inverter, please contact the service
representative.
RCMU Failure
Internal module is found abnormal. If the fault persists after restarting
the Inverter, please contact the service representative.
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Table 7.1-2 Troubleshooting Guideline (Inverter Failure)
Note
: If there is no display on the panel and the DC input voltage is higher than 150V, please check if
both DC and AC wires are well-fixed to the terminals. If no problem is found on the wiring, please
contact the service representative.
Note
: Repeated power on and off may be observed on Inverter during morning or dusk when the
illumination is low. In this case, such phenomenon is normal.
Risk of Electric Shock
When both DC and AC wires are connected, touching the connection joints might result in
electric shock. For the end-user who is not specialized in electrical engineering, please do
not touch the wires or connection joints when DC or AC power is on.
