Troubleshooting Guide
This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified DEWALT technician or your dealer.
Problem | Code |
Excessive air tank | 1, 2 |
Air leaks | 3 |
Air leaks in air tank or at air tank welds | 4 |
Air leaks between head and valve plate | 5 |
Air leaks from safety valve | 6 |
Knocking noise | 6 |
Pressure reading on the regulated pressure gauge drops when an accessory is used | 7 |
Compressor is not supplying enough air to operate accessories | 8, 9, 10, 11, 12 |
Regulator knob has continuous air leak | 13 |
Regulator will not shut off air outlet | 13 |
Motor will not run | 6, 14, 15, 16, 17, 18, 19, 20 |
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| Troubleshooting Codes |
CODE | POSSIBLE CAUSE | POSSIBLE SOLUTION |
1 | Pressure switch does not shut off | Set the Auto/Off switch to OFF, if the unit does not shut off contact a DEWALT factory service |
| motor when compressor reaches | center or a DEWALT authorized service center. |
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2 | Pressure switch | Contact a DEWALT factory service center or a DEWALT authorized service center. |
3 | Tube fittings are not tight enough | Tighten fittings where air can be heard escaping. Check fittings with soapy water solution. Do |
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| Not Overtighten. |
4 | Defective air tank | Air tank must be replaced. Do not repair the leak. |
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| WARNING: Risk of bursting. Do not drill into, weld or otherwise modify air tank or |
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| it will weaken. The air tank can rupture or explode. |
5 | Leaking seals | Contact a DEWALT factory service center or a DEWALT authorized service center. |
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6 | Defective safety valve | Operate safety valve manually by pulling on ring. If valve still leaks, it must be replaced. |
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| 15 |
