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OK have you got a voltage across the relay and overload assembly - Ian
You have paid a deposit that is fully refundable if we do not resolve your issue - however if you dont wish to proceed thats fine I will opt out and let you reclaim you funds.
Do you have 120 volts at the compressor connections?
OK check between connectors N and 1 on the compressor relay and overload assembly - not to ground.
OK and did you carry out the defrosting with the unit still connected to the supply?
First thing I would do is check the main circuit board and see if you have blown any of the fuses
Yes, N = neutral supply, 1 = switched live from thermostat or main pcb.
Either on the top or around the back usually.