Helvi COMPACT 211 EASY Manuel D'instructions page 36

INCONVENIENCE
Wrong output current
The displayed current
doesn't match with
real current.
No output current in
TIG AC
Arc can not be ignited
(TIG), there is HF
spark
Arc can not be ignited
(TIG), there is no HF
spark, no gas output
Arc can not be ignited
(TIG), there is no
HF spark,gas flows
normally
No gas flow (TIG)
Gas flow doesn't
stop (TIG)
CAUSE
Defective control potentiometer /
Control PCB.
Low primary power supply
voltage.
Defective hall probe.
Defective secondary
Defective control PCB
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
Torch trigger is defective.
Defective HF PCB
Defective power module.
Gas cylinder is close or gas pres-
sure is low
Control PCB is defective.
Solenoid valve is defective.
Solenoid valve is defective.
REMEDY
Contact after sales service centre.
Check power line.
Replace the hall probe.
Contact after sales service centre.
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
Check for proper TIG torch con-
nection to the unit.
Contact after sales service centre.
Contact after sales service centre.
Open gas cylinder valve or adjust
gas pressure.
Contact after sales service centre.
Replace the solenoid valve.
Replace the solenoid valve.
EN-16