23
Section 3
Trouble Shooting
NO.
Trouble
Possible Cause
Solution
1
Unit is switched on, but the
power light isn
’
t on
Switch damaged
Replace
Circuit breaker tripped or
unit unplugged
Reset breaker, plug in unit.
2
After welding machine is
overheating and the fan does
not work
Fan damaged or jammed
Check fan shroud housing and wire pro-
tective guard for damage
Fan power connector is loose
Check for dislodged connector
3
When torch switch is
pressed, no gas glows
No gas in the gas cylinder/
Regulator or cylinder valved
closed
Replace/Refill cylinder / Open valve
Gas line leaks
Check line with soapy water
Gas solenoid valve damaged
Check and clean/replace
Torch switch damaged
Repair or Replace
Control circuit damaged
Inspect the circuit
4
Wire
-
feeder
does not
work
Wire reel
does not turn
Motor damaged
Check and Replace
Wire feed selector turned to
minimum settting, knob is
loose or selector is damaged.
Check setting/Check knob/Replace poten-
tiometer.
Control circuit damaged
Check the board
Wire reel
turns or tries
to turn inter-
mittently
The tensioner is loose or wire
slips on rollers
Increase tension
The drive roller does not fit
the diameter of weld wire
Change roller or wire size to match
Wire Spool is damaged
Change out wire spool
Gun liner is jammed
Repair or change it, clear wire from liner/
clean liner with compressed air
Contact Tip is jammed be-
cause of slag or burn back
Clean or replace. If with Aluminum, in-
crease tip size to next size.
5
No arc, or no output voltage
Work clamp not connected
or cable is loose or Wire
feeder power cable is loose
or not connected
Check Work clamp/ cables
Control circuit damaged
Check the circuit
6
Welding stops, and warning
light is on
Self
-
protection has engaged
Check over
-
voltage, over
-
current, over
-
temperature, lower
-
voltage and over
-
temperature. Allow unit to cool if over
heated. Check power plug for problems
7
Welding Voltage/Current is
uncontrollable
Potentiometer damaged
Repair or Replace it
The control circuit damaged
Check the circuit
