MAINTENANCE AND TROUBLESHOOTING
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Ⅳ
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Wire feed pipe is jammed Repair or change it
Tip is jammed because of
splash
Repair or change it
5
No striking arc and no
output voltage
Output cable is connected
mistakenly, or loosen
Screw it down or change it
Control circuit damaged
Check the circuit
6
Welding stops, and alarm
light is on
Machine
has
self-
protection
Check over-voltage, over-current,
over-temperature, lower-voltage and
over-temperature, and solve it
7
Welding current is run
away and can be not
controlled
The
potentiometer
damaged
Check or change it
The
control
circuit
damaged
Check the circuit
8
The crater current can be
not adjusted
The PCB damaged
Check it
9
No post-gas
The PCB damaged
Check it
