
TROUBLESHOOTING
PROBLEM | CAUSE | SOLUTION |
Compressor will not run | Loss of power or overheating | Check for proper use of extension |
|
| cord |
| No electrical power | Check to be sure unit is plugged in |
|
| Check fuse/breaker |
| Blown shop/house fuse | Replace shop/house blown fuse |
| Shop/house breaker open | Reset shop/house breaker, determining |
|
| why problem happened |
| Thermal overload open | Motor will restart when cool |
| Pressure switch bad | Replace pressure switch |
| Tank is full of air | Compressor will turn on when tank |
|
| pressure drops to |
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Motor hums but cannot run or runs | Low voltage | Check with voltmeter |
slowly | Wrong gauge wire or length of exten- | Check for proper gauge wire and cord |
| ||
| sion cord | length |
| Shorted or open motor winding | Take compressor to service center |
| Defective check valve or unloader | Take compressor to service center |
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Fuses blow/circuit breaker trips | Incorrect size fuse, circuit overload | Check for proper fuse, use |
repeatedly |
| fuse, disconnect other electrical appli- |
|
| ances from circuit or operate compres- |
|
| sor on its own branch circuit |
| Wrong gauge wire or length of exten- | Check for proper gauge wire and cord |
| sion cord | length |
| Defective check valve or under loader | Take compressor to service center |
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|
Thermal overload protector cuts out | Low voltage | Check with voltmeter |
repeatedly | Lack of proper ventilation/room tem- | Move compressor to |
| ||
| perature too high | area |
| Wrong gauge wire or length of exten- | Check for proper gauge wire and cord |
| sion cord | length |
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