SERVICE MANUAL
3KVA/5KVA-230V
7
V201703A
2.3 Fault condition
Note:
When open the top cover, please have a look first, are there any obviously damaged parts?
When take the main board out, please have a look around, are there any obviously damaged
parts?
2.2.1. Not working at all/ No display
Description
The inverter couldn’t startup completely.
Possible reason
1. SPS module damaged.
How to check
1. Firstly, please measure the resistor between BAT+ and BAT-. If it is not shorted,
o
nly connect the inverter with battery, and press “ON” button, could the inverter
startup? If not, please check the fan.
2. If the LCD couldn
’t light up and fan doesn’t work, please disconnect all the wires
and open the top cover, and then take the main board outside by following part 4.
How to solve
Replace the main board.
2.2.2. 09 fault
Description
Bus soft start fails.
Possible reason
DC-DC module was damaged.
How to check
Check the main board
by following “3.1~3.4”;
How to solve
Repair the main board or replace it directly.
2.2.3. 56 fault
Description
Battery couldn’t be detected.
Possible reason
Wire connection or fuse was burnt.
How to check
1. Check the wire connection, the priority of the battery cable;
2. Check the main board
by following “3.1”.
How to solve
Repair the main board or replace it directly.
