AC Unit: Two Bad Capacitors?
Unit would start and run for 20 minutes or so, even had cold air coming from registers. I first noticed a problem when the registers began putting out warm air. I went to the unit outside and noticed the cooling fan was running, but not the compressor. I stood next to the unit and would occasionally hear a clicking sound like the compressor was trying to start but couldn't.
After shutting it down I turned it on about 30 minutes later. The compressor started, but the cooling fan on top was barely turning...I helped it along with a scewdriver and it spun up slowly - but reached what appeared to be normal operation. NOTE: the fan seems fine...and turns on what feel like brand new bearings...it seemed more like a low voltage or power problem.
I have now removed both capacitors: One is sealed with two wires "Relay and hard start" which was connected to COM and HERM on the larger 3 terminal capacitor 5/40 370 vac.
The 5/40 is bulged on top and tests "open" between all 3 terminals.
I connected my ohm meter to the "relay and hard start" cap and got a reading of 6.8 M ohms. I left the meter connected and the reading keeps going up by about 1 M ohm per minute.
So, my questions are:
Does the "relay and hard start" cap sound like it is ok?
and...If I replace one or both caps, what are the chances there is something wrong with maybe the compressor or something else that is just going to blow these new parts and I am back to square one???
I would appreciate ANY feedback or suggestions! Thanks!