INARC-1000 I/ 1250 I
·２２·
№
TROUBLE
CAUSES
WHAT
TO
DO
1
After power on, it
doesn’t work.
1)
Phase missing in power
source
2)
Fuse
（
3A
）
in welder is
broken.
3)
Cable is broken
1)
Check power source
2)
Check if the Fan,
Transformer for ZKB/QDB
and Main Control Board are
good or not.
3)
Check the connection
2
Circuit Breaker on
Rear Panel trips
while the machine is
working normally.
1) The following components
may be damaged: IGBT
Module, 3-phase Rectify
Module, or other devices
2) Drive Board is damaged.
3) Short circuit between cables.
1) Check and replace.
2) When IGBT Module is
damaged, please check
the devices on Drive Board
3
Welding current is
instable.
1) Phase missing
2) The following devices may
be damaged: Potentiometers
or switches on front panel
3) Main Control Board is
damaged
4) Current Sensor is damaged
1) Check power source.
2) Check and replace.
4
Welding current is
not adjustable.
1)
Welding Current
Potentiometer is damaged.
2)
Main Control Board is
damaged
3)
Current Sensor is damaged
Check and replace
Table 7: Trouble Shooting Table
