With an ohm-meter. Check for continuity in the RUN and START windings, and also from the terminals to compressor case for shorting. There should be continuity in the windings and no continuity from windings to compressor case.
Usually you check mega-ohms by reading the resistance between compressor shell and the windings. There should be a large amount of resistance which means the windings are not shorted to the compressor case or shell. Use a DVM (digital volt ohm meter) to check the resistance.
the lowest
To test a fridge compressor, you can use a multimeter to check for continuity in the compressor windings. You can also listen for any abnormal noises coming from the compressor when it's running. Additionally, check if the compressor is hot to the touch, as overheating can indicate a problem.
Different motor windings in the compressor: Common, Start, Run
Check for correct voltage, check Capacitor,check relays, check contactor, give the thermostat time to reset, give the solid-state relay time to reset, check motor windings for an open or or short.
there is a possibility that parts of motor windings has partial damage.
Inside an air conditioner compressor is a motor with two windings: a high-current coil called Start, and a low-current coil called Run. Both windings are connected to each other at a junction, aptly called the Common terminal.
with the compressor running.
Check for a blown fuse. Also check the wiring connections at the compressor.
check starting capacitors. Check voltage supply with a voltmenter from outlet to compressor.
WHICH COMPRESSOR, AIR SUSPENSION OR A/C.........???