Table 3: Troubleshooting
No.
Trouble
Reason
Remedy
1
The power indicator
light is not on and the
fan doesn't run. There
is no display in the
voltmeter and
amperemeter.
The external power
supply has a phase-
lacking fault
Check the three-
phase power
supply circuit
The automatic air
switch is unclosed or
damaged
Close the
automatic air
switch or replace
it
The input connection
is
broken
Check the
connection or
replace the
damaged part
The control
transformer is
damaged
Replace the
transformer
2
The fan doesn't run
The fan or the fan
capacitor is damaged,
or the related
connection has a fault
Replace the
damaged part, or
check the
connection
3
The protection
indicator light is not
on and the welder
doesn't work
The control board has
a fault. The part is
damaged
Please contact
with our
company
The voltage of the
power grid is too high.
The arc-welding
rectifier is in automatic
protection state.
It will resume
work
automatically
after the voltage
of the power grid
returns to
normal
Internal temperature of
the arc-welding
rectifier is too high, the
arc-welding rectifier is
in automatic protection
state
Ventilate the arc-
welding rectifier
for a while. It will
resume work
automatically
4
The heater doesn't
work
The fuse is burned
Replace the fuse
The heater is damaged
Replace the
heater or the gas
adjuster
5
The wire feeder doesn't
work
properly
The control cable is
broken or in a poor
contact
Check the
connection
The main control board
has a fault
Replace the main
control board
6
The air switch trips
The component is
damaged
Please contact
with our
company
The automatic air
switch is damaged
Replace the
automatic air
switch