Air Compressor – Low System Pressure
| Probable Cause | What to Do |
| Compressor running in “Unload” Mode. |
Press “UNLOAD/LOAD” button. |
| Controller off-line set point too low. |
Press “UNLOAD/STOP” button; set off-line set point at a higher value |
| Dirty air filter element. | Check filter condition. Replace as required. |
| Air leak. | Check air system piping. |
| Moisture separator trap drain stuck open. |
Inspect and repair. |
| Inlet valve not fully open. | Inspect and repair. Check control system operation. |
| System demand exceeds compressor delivery. |
Install larger or an additional compressor. |
