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No welding current
Mains switch is ON and indicators are lit up
Cause: Grounding (earthing) connection is wrong
Remedy: Check the earth (ground) connection and clamp for correct polarity
Cause: There is a break in the current cable in the welding torch
Remedy: Replace the torch
Nothing happens when the torch trigger is pressed
Mains switch is on, power source ON indication is lit up, indications on wire-feed unit not
lit up
Cause: The interconnecting hosepack is faulty or not connected properly
Remedy: Check interconnecting hosepack
No shielding gas
All other functions are OK
Cause: The gas cylinder is empty
Remedy: Change the gas cylinder
Cause: Gas pressure regulator is faulty
Remedy: Change the gas pressure regulator
Cause: The gas hose is not connected, or is damaged
Remedy: Mount/change the gas hose
Cause: The welding torch is defective
Remedy: Change the welding torch
Cause: Gas solenoid valve is defective
Remedy: Replace gas solenoid valve
Poor weld properties
Cause: Incorrect welding parameters
Remedy: Check the settings
Cause: Poor ground earth connection
Remedy: Ensure good contact to workpiece
Cause: Not enough protective gas shield, or none at all
Remedy: Check the pressure regulator, gas hose, gas solenoid valve, torch
gas connection, etc.
Cause: Welding torch is leaking
Remedy: Change the welding torch
Cause: Wrong contact tube, or contact tube is worn out
Remedy: Change the contact tube
Cause: Wrong wire alloy or wrong wire diameter
Remedy: Check the wire spool that has been inserted
Cause: Wrong wire alloy or wrong wire diameter
Remedy: Check the weldability of the base material
Cause: The protective gas shield is not suitable for this wire alloy
Remedy: Use the correct protective gas shield
The welding torch becomes very hot
Cause: The design dimensions of the welding torch are not sufficient for this
task
Remedy: Observe the duty cycle and loading limits
Cause: Only on water-cooled machines: Coolant flow is insufficient
Remedy: Check the water level, water flowrate, its cleanliness, etc.
Power source -
troubleshooting
(continued)
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