Troubleshooting
!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. Verify unit is plugged in. |
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| Check fuse/breaker or |
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| motor 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 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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