Why Does My Heat Pump Fan Run But the Compressor Repeatedly Hums for a Second and Kicks Off? AC season started this weekend where I live within NJ. ...

AC season started this weekend where I live within NJ. I have a warmth pump I use for heat within the winter and A/C in the summer. The bake worked fine. It's been stale for about 10 - 14 days. I switched the thermostat to cool Friday and enjoy gotten no cooling. The air handler blower runs and the warmness pump fan runs but the compressor tries to start but won't.

This is a unsullied compressor installed last summer. They wouldn't warranty it because they said I needed a unknown air handler beside a rating matched to the compressor or the compressor would eventually fail again. I don't remember if the heavens handler was rate above or below the compressor.

They were chitchat a few years, not a few months. Could this be happening already? I've be trying to save to convert to gas instead.
Answers:    The compressor not starting is fruitless news. Could be a doomed to failure reversing valve though.

I would take off it off for a while later try it in grill and see if it works.

I have see mismatches where they have to adjust the refrigerant each season, by tally or subtracting because it would trip the high pressure safekeeping if they didn't.

But it is nothing you can solve yourself. And warmth pumps are the cheapest form of heat. So you want to hold on to the heat pump but use the gas as a rear legs up since heat pumps don't work below 45 degrees consequently they heat beside expensive electricity. But the combination with a gas backup is the best, imo.

Good Luck
Best luggage scenario, your split capacitor is bad, worst overnight case your compressor is fried. Many companies fail to replace the capacitor when replacing the compressor, ashamed since this push button part of an A.C. system is relatively cheap.