Troubleshooting (continued)

Important!

Be CERTAIN to shut off the Welder, disconnect it from power, and discharge the Gun to ground before adjusting, cleaning, or repairing the unit.

Safety

Power switch (7a) lights,

but welder does not function when switched on

Possible Causes and Solutions

1.Tripped thermal protection device:

Shut the welder’s switch to off and allow it to cool for at least 20 minutes.

Reduce duration or frequency of welding periods to help reduce wear on the welder. Refer to Duty Cycle section on page 16.

2.Faulty or improperly connected Trigger (1c):

Qualified technician must check and secure/replace Trigger (1c).

3.Internal fuse blown:

Check/replace according to the following directions.

a.WARNING! Turn the welder OFF and unplug it before proceeding.

b.Press on the Cover Latch (8), then lift the Cover (31) using Handle (30). Remove Left Side Panel (13).

c.Examine fuse on panel to see if metal wire inside is broken or not. See illustration.

NOTE: The circuit board is very delicate and will be damaged if it is not supported

while the fuse is manipulated. If youFuse are have any doubts about doing this

without damaging the welder, have a qualified technician replace the fuse.

d. If the fuse is broken, carefully support the circuit board with a gloved hand while you remove the old fuse. Support the circuit board from behind while you install a new 2 Amp, 250 Volt fuse of the same type.

Never use another type or size fuse.

e. Reinstall the Left Side Panel (13), close the Cover (31), and test the unit for proper function before use.

Setup

Basic Welding

Welding Tips

Service

SKU 98871

For technical questions, please call 1-800-444-3353.

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Harbor Freight Tools 98871 Troubleshooting, Faulty or improperly connected Trigger 1c, Internal fuse blown
Page 26 Page 28

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