EN-16
INCONVENIENCE
CAUSE
REMEDY
Wrong output current
Defective control potentiometer /
Control PCB.
Low primary power supply
voltage.
Contact after sales service centre.
Check power line.
The displayed current
doesn’t match with
real current.
Defective hall probe.
Replace the hall probe.
No output current in
TIG AC
Defective secondary
Defective control PCB
Contact after sales service centre.
Arc can not be ignited
(TIG), there is HF
spark
Welding cable is not properly con
-
nected, is damaged or too long.
The distance between tungsten
electrode and workpiece is too
long.
There is oil or dust on the
workpiece.
Instable earth connection
Check for proper cable connection.
Ensure it is in good conditions and
its lenght is not too long.
Reduce the distance, about 3mm.
Clean the workpiece before
welding.
Check for proper earth cable
connection
Arc can not be ignited
(TIG), there is no HF
spark, no gas output
Torch trigger is defective.
Defective HF PCB
Check for proper TIG torch con
-
nection to the unit.
Contact after sales service centre.
Arc can not be ignited
(TIG), there is no
HF spark,gas flows
normally
Defective power module.
Contact after sales service centre.
No gas flow (TIG)
Gas cylinder is close or gas pres
-
sure is low
Control PCB is defective.
Solenoid valve is defective.
Open gas cylinder valve or adjust
gas pressure.
Contact after sales service centre.
Replace the solenoid valve.
Gas flow doesn’t
stop (TIG)
Solenoid valve is defective.
Replace the solenoid valve.