24
22
Battery over charge
1.Check the connection between battery
and Inverter.
2.restart the Inverter.
3.Make
sure
that
don’t
break
the
connection between the battery and
Inverter while the charging current is high.
23
Over load
Remove the load, ensure that the load is
less than the maximum VA the Inverter can
support. Then restart the Inverter.
24
Battery open
1. Ensure that the connection of the
battery is well.
2.
If the message still remains, check the
battery detect circuit.
25
Inverter over current for
long time
restart the Inverter.
26
Inverter short
Jump to 7.2.2
7.2 Repair
In this section, some debug skills are listed to help you finding the failed components and
problems as soon as possible. Before proceeding the following steps, we strongly suggest
to read previous section for trouble shooting first. Then check the components listed in
section 7.2.4 to find out which block fails.
7.2.1 Basic Instruments and tools
1
、
One computer with RS232 port and one standard RS232 cable;
2
、
Wire cutters and clamps;
3
、
One electric soldering iron;
4
、
One multimeter;
5
、
One oscilloscope(voltage and current probe needed);
6
、
Diagonal pliers, snipe nose pliers, cross screwdrivers (150mm/75mm length), flat
screwdrivers (75mm length) and PVC insulating tapes etc;
7
、
Make-self tools including Balance voltage test equipments, current limiting
resistors, tubes and clamp terminals with different specifications;
7.2.2 Quick Start
Before any detail check for Inverter, please check the components listed in the following
table. This action could help you find problem quickly and make debug procedures more
smoothly.
Note:
Make sure that the capacitor voltage is lower than the safety voltage before
disassembling any parts of the Inverter for rechecking procedure.
Circuit
Block
Checked components
Component
Type
Failure
condition
Booster
D17,D18, D19, D20
Diode
Short or open