OM-188 415 Page 12
4-4. Troubleshooting
Trouble Remedy
No weld output; wire does not feed. Be sure line disconnect switch is On (see Section 2-9).
Replace building line fuse or reset circuit breaker if open (see Section 2-9).
Reset circuit breaker CB1.
Secure gun trigger connections.
Check and replace Power switch if necessary.
No weld output; overload light on Thermostat TP1 open (overheating). Allow fan to run; the thermostat will close when the unit has cooled.
An overload condition occurred. Release gun trigger (see Section 4-3).
Low weld output. Connect unit to proper input voltage or check for low line voltage (see Section 2-9).
No wire feed. Reset circuit breaker CB1.
Turn Wire Speed control to higher setting (see Section 3-1).
Clear obstruction in gun contact tip or liner.
Readjust drive roll pressure.
Change to correct size drive rolls (see Section 2-5).
Check gun trigger and leads. Repair or replace gun if necessary.
Have Factory Authorized Service Agent check main control board.
Poor weld bead, or welding
wire is noodle welding.
Check polarity setting for type of welding wire being used.
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