21
TIG 168 DC HF/ TIG 200 DC HF FV
MADE IN FRANCE
EN
TROUBLESHOOTING
Symptom
Causes
Remedies
The device does not deliver any current
and the yellow thermal default light is
on.
Thermal protection is on.
Wait for the end of the cooling
period, approx. 2mn. The light
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 starting up, the display indicates
.
The voltage is not within range
TIG 168 = 230V +/- 15%.
TIG 200 = 85V - 265V
Check the electrical installation.
Unstable arc
Failure of the tungsten electrode
Ensure the correct size of Elec-
trode is being used.
Use a well prepared tungsten
electrode
Gas flow is too high
With weak currents, increase the
frequency
The tungsten electrode oxidizes and tar-
nishes the end of the weld.
Unprotected welding zone
Protect welding zone against air
flow (Post-gas) whilst cooling.
Fault from post-gas
Increase post-gas duration
Check and tighten all gas connec-
tions
The electrode melts
Polarity error
Check that the earth clamp is pro-
perly connected to +ve
"PH" is displayed on screen
Phase detection problem
Check that all phases are connec-
ted. Reset the machine to reset
the fault.
