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What tests can I do and what tools would I need to find out if the fan motor is bad...

At first both fan and compressor didn't start and the unit was humming. I turned off circuit breaker, replaced capacitor (5/40 370V), turned on circuit breaker.

The current situation is:

When I...

I have a heat pump outside and a blower in the attic. Both made by YORK. My system stopped cooling a week ago. The blower keeps running but the heat pump does not start.

I checked the circuit...