Product manual

Troubleshooting and Maintenance
40
SCI/ SPI communication
fault
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
PV1/ PV2 isolation fault
- Check the impedance among PV (+)、PV (-) and grounding
whether they are>600Kohm.
- Or, please ask for help.
Consistent Fault
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
Relay Failure
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
GFCI over 30mA /60mA /
150mA /300mA fault
- Check whether leakage current is too high.
- Disconnect DC and AC side, check the surrounding equipment
on the AC side.
- Reconnect the input side and check inverter after troubleshooting.
- Or, please ask for help.
EEPROM read/ write failure
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
Bus over voltage
- Disconnect DC side, and connect them again.
- Check L line and N line whether it has connection faults.
- Or, please ask for help.
GFCI device failure
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
- Disconnect DC and AC side, and connect them again.
- Or, please ask for help.
Input/ output current high
9.2 Daily Maintenance
Inverters generally do not need any maintenance or calibration, but ensure air-cooling fin not be covered
by any dust or dirties.
● Inverter cleaning
Please use electric drier, soft dry cloth or brush to clean inverters. Water, corrosive chemical substance
or intense cleaning agent are not allowed to clean the inverter.
● Cooling fin cleaning
To ensure inverter good performance and long-period usage, cooling fin needs to be left with adequate
space. Please use electric drier, soft cloth or brush to clean cooling fin. Water, corrosive chemical substance
or intense cleaning agent is not allowed.
Contiuned:
- Check grid-connection
- Or, please ask for help.
- Check the PV open-circuit voltage whether it is >Max.DC voltage.
- Or, please ask for help.
- Wait for one minute.
- Or, please ask for help.
No Utility
PV1/PV2 over voltage
DCI out range