24
Troubleshooting
Error messages
Malfunction
Possible cause
Remedy
Mains LED
[12]
and Fault
LED
[10]
light up
Mains fuse defective
Replace the fuse
Neutral conductor, mains phase missing
Check mains cable/mains extension cable
Mains LED
[12]
lights up and
Fault LED
[10]
flashes
System error
Switch off the machine, wait until the Mains
LED
[12]
goes out, then switch on the machine
again.
If the fault still persists, contact Service
Mains LED
[12]
lights up, but
no welding current
Ground cable not connected or defective
Check the ground cable and replace, if necessary
Electrode holder or welding torch not con-
nected or defective
Check the electrode holder or welding torch and
replace, if necessary
Fault LED
[10]
is lit constantly CDF exceeded, machine is overheating
Leave the machine switched on and allow to cool
down.
Faults during welding
Malfunction
Possible cause
Remedy
The electric arc is not drawn
No or bad ground contact
Ensure a good ground contact
Wrong electrode diameter
Select the right electrode diameter
Welding current set too low
Set welding current higher
Tungsten electrode contaminated or incorrectly
ground
Grind correctly or replace the electrode, if
necessary
Gas flow rate set incorrectly
Set gas flow rate correctly
No shielding gas
Gas cylinder empty
Replace the gas cylinder
Pressure reducer defective
Check, replace if necessary
Gas valve on welding torch not open or defec-
tive
Check, replace if necessary
Insufficient shielding gas
Welding torch leaking
Check, replace if necessary
Gas hose not securely connected
Connect the gas hose securely
Pressure reducer incorrectly set or defective
Check, replace if necessary
Pores in weld material
Welding torch leaking
Check, replace if necessary
Gas nozzle not securely connected
Connect the gas nozzle securely
Torch head defective
Check, replace if necessary
Workpiece soiled with grease, rust, oil, etc.
Clean
Draughts
Shield the workplace
Seam "boils"
(unsteady electric arc)
No gas supply
Check
Wrong gas
Use the correct gas
TIG electrode melts
Welding current set too high for electrode
diameter
Set the correct welding current
Poles reversed and TIG torch connected to
+ pole
[4]
Connect TIG torch to – pole
[3]
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