Routine Maintenance - Goodwe DNS Series User Manual

User Manual V1.0-2022-12-15
Relay-Check
Failure
DCI Injection
High
Inverter
EEPROM R/W
Failure
Failure
SPI Failure
DC BUS High
GFCI Failure
Others No display
AFCI-Fault

9.5 Routine Maintenance

Maintaining Item
System Clean
DC Switch
Electrical Connection
Sealing
1. Turn off DC switch of the inverter.
2. Wait till the LCD light is off.
3. Turn on the DC switch and make sure it is connected.
4. If the problem still exists, contact local service office for help.
1. Turn off the DC switch and unplug the DC connector, then
measure the voltage of the PV array.
2. Plug in the DC connector, and turn on the DC switch.
3. If PV array voltage is lower than 250V , please check
configuration of inverter module.
4. If voltage is higher than 250V , please contact local service
office for help.
1. Turn off the DC switch of the inverter.
2. Ensure the DC connector is the right model and is properly
connected.
3. Turn on the DC switch and make sure it is connected.
4. If the problem still exists, contact local service office for help.
Maintaining Method
Check the heat sink, air intake, and air
outlet for foreign matter or dust.
Turn the DC switch on and off ten
consecutive times to make sure that it is
working properly.
Check whether the cables are securely
connected. Check whether the cables are
broken or whether there is any exposed
copper core.
Check whether all the terminals and ports
are properly sealed. Reseal the cable hole
if it is not sealed or too big.
35
09 Maintenance
Maintaining Period
Once 6-12 months
Once a year
Once 6-12 months
Once a year