. Complete Parts List available at www. MillerWelds.com
SECTION 9 − TROUBLESHOOTING
9-1. Troubleshooting
A. Welding
Trouble | Remedy |
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No weld output or generator power out- | Be sure all equipment is disconnected from receptacles when starting unit. |
put at ac receptacles. |
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. AC receptacles provide auxiliary | Place switch in Wall position or start engine and place switch in Generator position. |
power only while engine is running. |
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| Over temperature light is flashing. Allow unit to cool with fan running until thermostat TP1 resets and light |
| turns off. |
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| Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, and integrated rectifier |
| SR2. |
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No weld output; generator power out- | Place switch in Generator position to obtain weld output. |
put okay at ac receptacles. |
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| Check weld connections. |
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| Check Spool Gun/Mig Gun switch position. |
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| Have Factory Authorized Service Agent check stator, integrated rectifier SR2, stabilizer Z1, and main |
| rectifier SR1. |
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Low weld output. | Check Weld Output control setting. |
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| Check engine speed, and adjust if necessary (see Section |
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| Service engine air cleaner. |
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| Check weld cable size and length. |
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| Have Factory Authorized Service Agent check stator, integrated rectifier SR2, stabilizer Z1, and main |
| rectifier SR1. |
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High weld output. | Check Wire Speed and Voltage control settings. |
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| Check engine speed, and adjust if necessary (see Section |
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Erratic weld output. | Check Wire Speed and Voltage control settings. Check wire feed for erratic condition. |
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| Tighten and clean connections to electrode and workpiece. |
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| Remove excessive coils from work lead and gun power cable. |
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| Clean and tighten connections both inside and outside welding generator. |
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| Check engine speed, and adjust if necessary (see Section |
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| Check throttle/governor linkage for smooth, |
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B. Generator Power |
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Trouble | Remedy |
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No output at generator power ac re- | Be sure all equipment is disconnected from receptacles when starting unit. |
ceptacles; no weld output. |
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. AC receptacles provide auxiliary | Have Factory Authorized Service Agent check brushes, slip rings, rotor, stator, and integrated rectifier |
power only while engine is running. | SR2. |
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No output at generator power ac re- | Reset and check supplementary protector (see Section |
ceptacles; weld output okay. |
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| Check receptacle wiring and connections. |
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| Have Factory Authorized Service Agent check stator windings and connections at terminal block 1T. |
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High output at generator power ac | Check engine speed, and adjust if necessary (see Section |
receptacles. |
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