When a compressor will not start, the cause is usually electrical, control or protection related, and most are quick to trace.
Check the Power Supply
Confirm the supply is on, the voltage is correct and the phase sequence is right, then check fuses and breakers.
Control and Protection
A tripped overload, open emergency stop or active alarm will block starting, so read the controller display for clues.
Pressure and Valves
If the unit is already at pressure, the pressure switch may simply be holding it off until air is demanded.
Contact us for starter, control and protection parts for your compressor.