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Cause: Mains fuse is faulty
Remedy: Change the mains fuse
No welding current
mains switch is on, overtemperature is displayed
Cause: Overload; the duty cycle has been exceeded
Remedy: Check duty cycle
Cause: Thermostatic automatic circuit breaker has been tripped
Remedy: Wait until the power source automatically comes back on after
the end of the cooling phase
Cause: Limited supply of cooling air
Remedy: Ensure accessibility to cooling-air ducts
Cause: The fan in the power source is faulty
Remedy: Replace the fan (After-Sales Service)
No welding current
Mains switch is on and indicators are lit up
Cause: Grounding (earthing) connection is incorrect
Remedy: Check the grounding (earthing) connection and terminal for cor-
rect polarity
Cause: There is a break in the power cable in the welding torch
Remedy: Replace the welding torch
Nothing happens when torch trigger is pressed
Mains switch is on and indicators are lit up
Cause: The control plug is not plugged in
Remedy: Plug in the control plug
Cause: Welding torch or welding torch control line is faulty
Remedy: Replace the welding torch
Cause: Interconnecting hosepack is faulty or not connected properly
Remedy: Check the interconnecting hosepack
No shielding gas
All other functions are OK
Cause: Gas cylinder is empty
Remedy: Change the gas cylinder
Cause: Gas pressure regulator faulty
Remedy: Replace gas pressure regulator
Cause: The gas hose is not connected, or is damaged or kinked
Remedy: Connect/replace the gas hose, or straighten out kinks
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