A/C compressor/fan will not turn on.
Here's the confusing part:
- When main power is turned off, but control voltage is on, the contactor energizes and engages the contacts.
- As soon as the main power is turned on, the contactor disengages and will not send power to compressor/fan.
- If I manually engage the contactor, the compressor/fan turns on.
- I am consistantly getting about 27 volts at the control voltage side of contactor whether or not the main power is turned on.
Is there an overload switch that is disengaging the contactor?