Note:
When sunlight is insufficient, the inverter may continuously start up and shut down
automatically due to insufficient power generation from the PV panels, this should not lead to
inverter damage.
1. Turn off DC switch of the inverter.
2. Wait till the inverter's LCD light is off.
3. Turn on DC switch and make sure it is connected.
4. If the problem still exists, contact local service office for help.
1. Turn off DC switch, take off DC connector, measure the voltage of PV array.
2. Plug in DC connector, and turn on DC switch.
3. If PV array voltage is lower than 250V , please check configuration of inverter.
4. If PV array voltage is higher than 250V , please contact local service office.
Type of fault
Troubleshooting
Relay-Check Failure
DCI Injection High
EEPROM R/W Failure
SCI Failure
SPI Failure
DC BUS High
BUS Unbalance
GFCI Failure
Ifan Fault
Efan Fault
Afan Fault
No display
Wi-Fi module fail to
connect to network
Inverter
Failure
Others
1. If the Wi-Fi module fails to connect to network after choosing the right router
hotspot and entering the right password
，
it's possible that there are special
characters not supported by the module in the hotspot password. Please
modify the password so that it consists of only Arabic numerals or uppercase /
lowercase letters.
2. If the problem still persists, contact local service office for help.
7 Caution
7.1 Checking The DC Switch
DC switch does not require any maintenance.
It is recommended, though not compulsory, to:
• Check the DC switch regularly.
• Activate the DC switch 10 times in a row once a year.
Operating the switch will clean the contacts and will extend the life of the DC switch.
Boot order:
1. Turn on the breaker on AC side.
2. Turn on the DC switch.
3. Turn on the breaker on DC side.
Caution: if there is no switch, step 2 is not required.
Shutdown order:
1. Turn off the breaker on AC side.
2. Turn off the DC switch.
3. Turn off the breaker on DC side.
Caution: if there is no switch, step 2 is not required.
7.2 Checking The Electrical Connection
1. Check if the AC or DC wire is loose.
2. Check if the earth wire is reliably grounded.
3. Check if the waterproof covers of RS485 /WiFi port are fasten.
Caution: Maintenance cycle is once every half a year.
4. Please use torque wrench to tighten the AC terminal wiring connection once a year.
Caution: Maintenance cycle is once every half a year.
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