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TROUBLESHOOTING
Fault
Cause
Cooling fan
Fan is faulty
is not
Wire is cut /falling off
working
Torch switch is faulty
No HF arc-
Main PCB is faulty
pilot
Wire is cut /falling off
No Gas input
No output
Gas
Main PCB is faulty
Gas valve is faulty
Gas path jammed
Problem in
Water pump is not working Check supply, Motor and Flow switch.
water flow /
Water path is Jammed
trip
Overheating
Inside case overheating.
protection
indicator
Temperature sensor faulty
light on
Power over or under
voltage +-15%.
The relevant
potentiometer is faulty.
Panel
Main PCB is faulty.
current
Wire is cut /falling off.
knob
malfunction
Wire is cut /falling off
Current
PCB is faulty.
meter no
display
Wire is cut /falling off.
Loose connection
between torch and welder
Argon not pure
Arc not
Tungsten electrode not
smooth
good or pin head broken
Power switch first time
Power trip
turn on after long
time(over two days)cut off
Others
Solutions
Replace or repair
Find the disconnection and connect it
reliably
Replace
Replace
Find the disconnection and connect it
reliably
Check the regulator & gas pipe and
resume supplying gas to welder
Replace
Replace
Remove foreign matter & clear path
Remove foreign matter & clear path
Recover after the inner temperature cool
down
Replace
Until the voltage is normal.
Replace
Replace
Find the disconnection and connect it
properly.
Find the disconnection and connect it
properly.
Replace
Find the disconnection and connect it
reliably
Check & correct according to manual
Change 99.99% Argon
Change to correct electrode
Filter capacitor's charge in the main circuit
lead to trip, return on the switch is OK.
Please contact ESAB service
10
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