Power Fist SMART TIG AC/DC-200P Manuel De L'utilisateur page 24

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Problem(s)
The alarm light is on
(Current Protection).
No Gas Flows (TIG)
Gas always flows
The welding current cannot
be adjusted
No AC output while
selecting AC.
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SMART TIG AC/DC-200P Inverter Welding Machine
Possible Cause(s)
1. Unusual current in the main circuit.
1. Gas cylinder is closed or gas
pressure is low.
2. Something in the valve.
3. Electromagnetic valve is damaged.
1. The gas-test button on the front
panel is on.
2. Something in the valve
3. Electromagnetic valve is damaged
4. The adjustment knob for pre-gas
time on the front panel is
damaged.
1. The welding current potentiometer
on the front panel connection is
damaged or poorly connected.
1. The power PCB is
malfunctioning.
2. The AC drive PCB damaged
Suggested Solution(s)
2. Test and repair the main circuit and
drive PCB.
1. Open or change the gas cylinder.
2. Remove it.
3. Change it.
1. Turn off the gas-test button on the
front panel.
2. Remove it.
3. Change it.
4. Repair or change it.
1. Repair or change the potentiometer.
1. Repair or change it.
2. Change it.
For technical questions call 1-800-665-8685
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