I’m suspecting an upcoming issue with my split AC system. Currently it is working and cooling, however in the last week or so, I’ve noticed that after the AC reaches the set temp, the copper line inside at the air handler sounds like refrigerant is flowing. The line is hot to the touch, not burn you hot, but hot.
Leaving for work one morning I then noticed the condenser unit fan shut off as the AC reaches the set temp, but a humming (compressor?) with the fan off. The whole CU is again, hot to the touch. This will on for about 10 minutes or so after the CU fan and AH shut off. Happens in the heat of the day and at night. More often than not, but not all the time.
Compressor is new. Goodman system. CU coils aren’t dirty. AH coils aren’t too bad either.
“Flowing” noise goes away when AC is running.
System is in South Florida.
Any ideas of why this would happen?