10
Troubleshooting
NOTE: When yellow tripped protection/alert indicator turns on, the possible causes are 1) tripped overheat protection; 2) short
circuit alert; 3) tripped overvoltage protection.
Problem
Possible Cause
Solution
No welder output when
switched on and neither
indicator LED is illuminated.
□
Loose ground clamp
connection.
□
Check and make sure the ground clamp is well attached
to the workpiece.
□
No input power supply.
□
Check and make sure welder is plugged in.
□
Verify outlet output power.
□
Check the circuit breaker to see whether it is tripped or
not. Reset if necessary.
No welder output when
switched on and indicator
yellow LED/s is/are
illuminated.
□
Tripped thermal protection by
overheat (tripped
protection/alert indicator LED
turns on).
□
Cool the welder for at least 10 minutes. The tripped
protection/alert indicator LED should turn off after
welder cools down.
□
Reduce the duration of the welding period, or duty cycle,
or duration of use.
□
Check whether the fan inside the welder is working
properly.
□
Overheat caused by
environmental factors such as
high room temperature or
insufficient air flow.
□
Relocate to a cool working environment.
□
Check whether there is obstruction blocking air flow in
the room. Clear the obstruction if needed.
□
Incorrect input voltage.
□
Check the outlet voltage.
Weak arc strength/non-
penetrating weld.
□
Long or improper extension
cord.
□
Use a proper extension cord.
□
Input power is too low.
□
Verify your welder’s output voltage and current.
□
Ask a qualified electrician for help if necessary.
□
Poor ground clamp, torch or
electrode holder connection.
□
Check connection of ground cable, torch or electrode
holder and make sure they are well connected.
Frequent circuit breaker trips.
□
Circuit breaker is insufficient
for the working current of the
welder.
□
Make sure the circuit breaker fits the working current of
the welder.
□
Refer to a qualified electrician if you are not able to
figure out.
Poor welds.
□
Improper current/voltage
setting.
□
Make sure the welding current/voltage matches the
recommended setting on chart.
□
Workpiece is not clean (rusty,
painted or greasy).
□
Ensure workpiece is clean and dry.
□
Poor ground clamp or
torch/electrode holder
connection.
□
Check and make sure ground clamp/workpiece have
good connection; torch/electrode holder and machine
have good connection.
Difficult to start an arc.
□
Welding amperage is low.
□
Increase welding amperage.
