Troubleshooting - MasterCraft MIG 180 Instruction Manual

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Troubleshooting

The following chart lists common issues and solutions. Please read it carefully and follow all
instructions closely.
PROBLEM
The welder does not
work when the main
switch is turned on.
The welder does not
weld.
Blown fuse or
tripped circuit
breaker.
Arc is hard to start.
WARNING!
Potential hazard that could result in serious injury or loss of life.
• If any of the following symptoms appears while the welder is in use, turn unit
off and disconnect it from the power supply immediately. Failure to heed this
warning will result in serious personal injury or loss of life.
• Repairs must be performed by a qualified service technician only.
POSSIBLE CAUSES
1. No power input.
2. Power cord or power plug is
broken.
3. Main switch is broken.
4. Transformer is broken.
1. Incorrect power input.
2. Inadequate current at the output.
3. Poor connection of output cable.
4. Welder components and work
piece surface are dirty.
5. Wrong welding wire.
6. Wrong mode selector switch
setting.
1. Inadequate fuse or circuit breaker.
1. Wrong welding wire or electrode.
2. Base metal is not grounded
properly.
MIG 180 INVERTER WELDER 058-9306-4
SOLUTIONS
1. Check the circuit or fuse of the power supply.
2. Replace the power cord.
3. Replace the main switch.
4. Replace the transformer.
1. Check the power source.
2. Check for proper grounding to the work piece.
3. Check the output connection.
4. Clean the components.
5. Use the correct wire.
6. Set the mode selector switch in accordance
to the type of welding.
1. Check whether the fuse in power supply is 50 A.
1. Use the correct wire or electrode.
2. Make sure the connection is good.