8 TROUBLESHOOTING
0463 766 001
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© ESAB AB 2021
Type of fault
Cause
Corrective action
Arc start is not smooth
The tungsten electrode is
too large for the welding
current.
Select the right size
electrode.
A wrong electrode is being
used.
Select the right size
electrode.
Gas flow rate is too high.
Select the right rate for the
welding task. See "TIG (L-
GTAW) Basic welding
technique" section.
Incorrect shielding gas is
being used.
Select the right shielding
gas.
Poor work clamp
connection to workpiece.
Improve connection to the
workpiece.
Arc flutters during TIG
welding
The tungsten electrode is
too large for the welding
current.
Select the right size
electrode.
Tungsten blackens due to
lack of shielding gas
Gas valve on the TIG torch
has not been turned ON.
Turn ON TIG torch gas
valve before you
commence welding.
Gas cylinder valve OFF or
TIG torch hose not
connected to regulator.
Turn ON gas cylinder valve
or connect TIG torch hose
to regulator.
8.5
Error Codes
Error codes
The error code is used to indicate that a fault has occurred in the equipment. Errors are indicated
by the text "Err" and the error code number flashing alternately in the power source display.
Suggested service technician actions for error codes are described in the sub-sections below.
Thermal error
If the protection light is on, the power source might be overheated.
1) Wait until the temperature drops and the protection light turns off, the power source will work
and you can return to welding.
2) If the light does not turns off, follow troubleshooting procedure.
Exception display description
Display
Description
Err Vol
Input voltage is inconsistent with selected
voltage.
Ovr Cur
Over current has happened and over
current protection is active.
Err Sht
Output short circuit has happened and
output short circuit protection is active.
