7 TROUBLESHOOTING
0463 862 001
- 32 -
© ESAB AB 2023
7 TROUBLESHOOTING
Perform these checks and inspections before sending for an authorised service technician.
• Check that the mains voltage is disconnected before starting any type of repair action.
Type of fault Corrective action
MMA welding problems Check that the welding process is set to MMA.
Check that the welding and return cables are correctly connected to
the power source.
Make sure that the return clamp has good contact with the
workpiece.
Check that the correct electrodes and polarity are being used. For
polarity, check electrode packaging.
Check that the correct Welding current (A) is set.
Adjust Arc Force and Hot start.
TIG welding problems Check the welding process is set for Lift TIG as necessary.
Check that the TIG torch and return cables are correctly connected to
the power source.
Make sure that the return clamp has good contact with the
workpiece.
Make sure that the TIG torch lead is connected to the negative
welding terminal.
Make sure that the correct shielding gas, gas flow, welding current,
filler rod placement, electrode diameter and welding mode on power
source is used.
No arc Check that the electrical power supply switch is turned on.
Check that the display is on to verify that the power source has
power.
Check that the setting panel is displaying correct values.
Check that welding and return cables are correctly connected.
Check the electrical power supply fuses.
Welding current is interrupted
during welding
Check whether the Over Temperature LED (Thermal Protection) on
the setting panel is on.
Continue with fault type "No Arc".
The thermal protection trips
frequently
Make sure the recommended duty cycle for the weld current has not
been exceeded.
See section "Duty cycle" in the TECHNICHAL DATA chapter.
Make sure the air inlets or outlets are not clogged.
Clean inside machine according to routine maintenance.
To Next Page