12/20
TROUBLESHOOTING
Anomalies
Causes
Remedies
The device does not deliver any
current and the yellow thermal
fault light
illuminates
The thermal protection is on
Wait for the end of the cooling
time, around 2 minutes. The
indicator lamp
turns off.
The display is on but the device
does not deliver any current.
The earth clamp or electrode
holder is not properly
connected to the unit.
Check the connections.
When on, the user feels a
tingling sensation when touching
the machine.
The welding unit is not
correctly connected to the
earth.
Check the plug and the earth of
your electrical network.
Your unit does not weld
correctly.
Polarity error.
Check the polarity advised on
the electrode packaging.
When starting up, the display
indicates
The voltage is not within the
range 230V +/- 15%
Have the electrical installation
checked.
Use a tungsten electrode with
the correct size
Fault originates from the
tungsten electrode
Use a well prepared tungsten
electrode
Unstable arc
Gas flow rate is too high
Reduce gas flow rate
Working area
Protect welding zone against air
flow
Increase post-gas duration
The tungsten electrode becomes
oxidised and tarnishes at the
end of welding.
Fault originating from post-
gas, or the gas has been
interrupted.
Check and tighten all gas
connections.
Ensure
the
electrode has cooled down
before stopping the gas.
The electrode melts
Polarity error
Check that the earth clamp is
connected to the +.
