D Unstable current in the operation of the welder
：
This may be attributed to the following factors
：
1.
Change in grid voltage
；
2.
Interference from the power grid or other power equipment.
E Severely burn of the tungsten needle
The duty cycle is adjusted too large, causing emission from the workpiece to the tungsten electron for too long,
resulting in severe heat of the tungsten needles.
F The oxide film can’t be torn when welding aluminum:
1.
the welding gear is selected wrong.
2.
The duty cycle is adjusted too small;
3.
The secondary inverter has field pipe damage.
G The abnormal pilot lamp is on:
1.
The light is on when the welder work abnormally, please turn off the power switch and then reboot the machine, it
can continue to use if it return to normal,
2.
If the light is on repeatedly, please refer to the professional or the manufacturer for repair.
TROUBLESHOOTING
Faults
Resolvable Methods
Power indicator is not lit ,fan does
not work and no welding output
Power switch is out of work .
Check if electrify wire net (which is connected to input cable )is in work.
Check if input cable is out of circuit .
1
2
3
1
Lower indicator is lit ,fan does not
work or revolve several circles ,no
welding output
Maybe connect wrong to 380V power cause machine is in protection
circuit ,connect to 400V power and operate machine again .
400V power is not stable,(input cable is too slender)or input cable is
connected to electrify wire net cause machine is in protection circuit .Add
the section of cable and tighten input connector firmly .Close machine 2-3
minutes then open it again.
Cable is loosed from switch to power panel ,tighten them again .
Open and close power switch constantly in short time cause machine is in
protection circuit Close machine 2-3 minutes then open it again .
Main circuit 24V relay of power panel is not close or has damaged .Check
24Vpower source and relay .If relay has damaged replace it with same
model.
1
2
3
4
5
2
22
TROUBLESHOO
TING
