!WARNING:
For your own safety do not try and run the air compressor while troubleshooting.
| TROUBLE | PROBABLE CAUSE | REMEDY | |
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Compressor will not | 1. Unit is plugged into | 1. Remove extension cord | |
run | extension cord |
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| 2. No electrical power | 2. Plugged in? Check | |
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| fuse/breaker or motor | |
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| overload | |
| 3. Blown fuse | 3. Replace blown fuse | |
| 4. Breaker open | 4. Reset, determining why | |
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| problem happened | |
| 5. Thermal overload open | 5. Motor will restart when | |
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| cool | |
| 6. Pressure switch bad | 6. Replace | |
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Motor hums but can- | 1. Low voltage | 1. Check with voltmeter | |
not run or runs slow- | 2. Unit is plugged into | 2. Remove extension cord | |
ly | extension cord |
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| 3. Shorted or open motor | 3. Replace motor | |
| winding |
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| 4. Defective check valve or | 4. Replace or repair | |
| unloader |
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Fuses blow/circuit | 1. Incorrect size fuse, circuit | 1. Check for proper fuse, use | |
breaker trips repeat- | overloaded | ||
edly |
| Disconnect other electrical | |
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| appliances from circuit or | |
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| operate compressor on its | |
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| own branch circuit | |
| 2. Unit is plugged into | 2. Remove extension cord | |
| extension cord |
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| 3. Defective check valve or | 3. Replace or repair | |
| unloader |
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