7 TROUBLESHOOTING
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© ESAB AB 2016
7 TROUBLESHOOTING
Try these recommended checks and inspections before sending for an authorised service
technician.
Type of fault Actions
No arc. • Check that the mains power supply switch
is turned on.
• Check that the mains, welding current
and return cables are correctly
connected.
• Check that the correct current value is
set.
• Check the mains power supply fuses.
Welding current is interrupted during welding • Check whether the thermal protection trip
has operated (indicated by the orange
LED on the front(3))
• Check the main power supply fuses it the
LED indicating power supply(4) is not lit.
• Check that the return cable is correctly
fastened.
The thermal protection trips frequently • Check to see whether the air filters are
clogged.
• Make sure that you are not exceeding the
rated data for the power source (i.e. that
the unit is not being overloaded).
• Check that the ambient temperature is not
above the one for the rated duty cycle
40°C/104°F.
Poor welding performance. • Check that the welding current and return
cables are correctly connected.
• Check that the correct current value is
set.
• Check that the correct welding wires are
being used.
• Check the mains power supply fuses.
Nothing happens when the trigger on the
welding torch is pushed.
• Check the fuse on the rear part of the
power source.
• Check if the welding and return cables
are damaged.
• Check that the wire feeder works
correctly. See the wire feeder instruction
manual.
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