This may be because the Air Compressor’s circuit breaker has tripped due to the unit being turned on from the power/wall outlet rather than the On/Off Power Button on the Compressor.
The circuit breaker protects the Compressor’s electric motor from burnout or any time it’s under an extreme load. Once tripped, the motor will not run until it is reset.
You can simply reset the Air Compressor by pressing the ‘Reset Button’.
It’s important to remember to only turn your Air Compressor On/Off from the power button on the Compressor itself.