6 Basic Troubleshooting
No.
Description
Possible Cause
Remedy
1
Abnormal indicator
leads
to
Bad
ventilation
overheating protection
Improve
ventilation
conditions
High environmental temperature
Automatic recovery after
decreasing
Exceed rated duty cycle
Replace potentiometer
2
Current knob broken
Potentiometer damaged
Replace it
3
Motor fan can’t work or
low rotational speed
Bad power switch
Replace the switch
Bad fan
Replace the fan
Led broken
Check the circuit
4
No open circuit voltage
Overheating
See point 1
Bad power switch
Replace the switch
5
Electrode holder cable is
too hot; output terminals
are too hot.
Capacity on electrode holder is
too small
Replace larger capacity
electrode holder
Cable is too thin
Replace a proper cable
Socket is loosen
Remove the oxide coat
and re-tight it
6
Power off
Power capacity is not big enough
Enlarge the capacity
Welding process
Contact the supplier
7
Other problems
Contact the supplier
The machine has the function of prohibit switching power supply in rapid succession within a short
period of time for switching on and off. The power will not open then (the indicator light is not on or
the fan does not work or there is no-load voltage). Shut down the power switch and resume back to
normal after a few minutes.
