I had my TXV valve replaced last summer and my AC worked ok after that. I live near Dallas and it struggled to keep my home temp below 78 during the day in the heat of summer. That’s a bit beside the point (though if you have tips on how to improve the performance please let me know).

The problem right now is the air handler inside is not moving air. The outside unit kicks on and runs when my thermostat switches to cool. Also, I can hear the refrigerant being moved and the casing of the air handler near my filter gets cold. I don’t think the problem is there. I pulled the breakers to inspect the PC board, relay and capacitor and I don’t see any damage to them. There is a red LED that blinks on for 2 seconds and then off for 2seconds when there is power, which I think means the PC board is functioning correctly. I have a multimeter, but would appreciate some instructions on how to test each of those components for failures.

The one problem that seems to be obvious is the blower motor looks to have some damaged coils. I removed the leads to the motor to see if there was power being supplied to the motor, and my multimeter red about 240 volts with thermostat turned on. Odd thing though, when I turned thermostat off, I still read 240 volts. I had 4 wires hooked up to my motor, yellow from board (I think) to H port (M and L had no connection), brown was soldered on motor and connected to CAP and so was purple. Another purple wire came from board to CAP. Green wire grounded motor to blower casing. The multimeter readings above came when I attached leads to the yellow wire that went to motor and purple wire that went to CAP.

An I right to think I can keep this same configuration and just replace the motor, or am I setting myself up to blow another motor? Sorry for the length…

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