OWNER’S MANUAL
-14-
PNR-YF-05Y-A1
Abnormal indicator is lit, power
indicator is lit, fan is working
1. The high voltage transformer has been hit through or not.
2. The MOSFET is damaged.
3. The Fast Rectifying Diode is damaged.
4. The control board has a fault.
5. The feedback circuits is in fault. (Contact with dealer or manufacturer).
fan is working, power indicator
is lit, electromagnetic valve is
actuate, no HF arc-striking
sound, abnormal indicator is not
lit
1. The arc ignition part has a fault.
2. The jet of discharge electricity is too far away or have adhesive
3. The high voltage transformer is damaged.
4. The arc relay is damaged.
5. The control board has a fault.
Air switch cannot close.
1. The Air switch has problem.
2. The three-phase Rectifier is damaged, replace it.
3. Check the machine for short-circuit .
If the machine fails to work normally after maintenance and check, please contact with the local distributor or
OUR after-sale service center.
WELDING EXPLOSION DIAGRAM
TIG400PAC/DC
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