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10
English
Troubleshooting
No.
Problem
Possible Cause
What to do
1
Yellow Thermal
Indicator is on
Input voltage is too high (≥15%)
Switch off power source; Check the main
supply. Restart welder when power recovers
to normal state.
Input voltage is too low (≤15%)
Insufficient ventilation.
Improve the ventilation.
Ambient temperature is too high.
It will automatically recover when the
temperature reduces.
Exceeding the rated duty-cycle.
It will automatically recover when the
temperature reduces.
2
Wire feeding motor
not working
Potentiometer faulty
Change potentiometer
Nozzle is blocked.
Change nozzle
Drive roll is loose.
Increase tension on drive roll
3
Cooling Fan not
working or turning
very slowly
Switch broken
Replace the switch
Fan broken
Replace or repair the fan
Wire broken or disconnected
Check the connection
4
Arc is not stable and
spatter is large
Too large contact tip makes the current
unsteady
Change to proper contact tip and / or drive
roll.
Too thin power cable makes the power
unstable.
Change the power cable.
Too low input voltage
Correct the input voltage.
Wire feeding resistance is too large
Clean or replace the liner and keep the gun
cable straight.
5
Arc will not start
Work cable broken
Connect / repair work cable
Work piece has greasy, dirty, rusty or
painted
Clean work piece, ensure good electrical
contact between work clamp and job.
6
No shielding gas
Torch is not connected properly.
Re-connect the torch.
Gas pipe is crimped or blocked.
Check gas system.
Gas hose broken.
Repair or replace
7
Others
Please contact our Field Service
Shop.