There are different type of compressor controllers used for different models of compressors. Some of the inverter drive models high pressure error is not triggered automatically.
Compressor stops and trips high pressure alarm (/d series) or fail to start (/x series) when compressor air outlet pressure is higher than 15PSI (1Bar) the desired pressure (PSET) set by the user.
| Reason | Solution |
|---|---|
| Isolation valve after the compressor kept closed when the Compressor started | Open the isolation valve and make sure pressure read by the Compressor is less than the desired pressure (PSET) set by the user. Cut the power from the breaker wait till all the lights on the compressor goes off and repower and restart the Compressor. |
| There is another compressor in the same air net (compressed air piping) with unloading or stopping pressure higher than15PSI (1Bar) the desired pressure (PSET) set by the user of the U.S. Air Compressor. | Reduce the unloading pressure on the other compressor to a value lower than 15PSI (1Bar) above the desired pressure (PSET) set by the user. |
| There is not enough tank (air volume) after the Compressor or piping is too small. Compressor air outlet pressure is increasing too fast. By the time the Compressor reacts the pressure increase, go offload or slowdown, pressure at the Compressor is getting too high. |
Add a tank after the Compressor, increase the size of piping. (Min recommended sizing is the size bigger than the compressor air outlet diameter). Check if there is any blockage in the system such as a frozen air dryer or clogged air filters. |
| Discharge Valve is not properly working. | Refer to Discharge valve working principle / troubleshooting |
| Discharge valve is icing. | If the Compressor starts running when there is no air demand such as lunch breaks or overnights, weekends when the operation does not need air, the Compressor may run long periods because of the heating function. During such periods, the Compressor is actually wasting energy and must be stopped. If the Compressor is running at offload and keep dumping air long periods, the expansion of the compressed air through the discharge valve will cause icing at the discharge valve. Ice may block the air discharge increasing the pressure to limits above desired. It may also damage the internal components of the discharge valve. In order to solve the problem an additional discharge valve(s) can be added to the system with a regulator in front to avoid icing during this period by reducing the pressure before the discharge valve so does the expansion and icing. However, considering the energy wasted for a whole night or the weekend, it is highly recommended to stop the Compressor when air is not needed for long periods of time. |
Last modified:
2 October 2023
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