roy25101
16-06-2014, 02:22 AM
Got a call from my wife. She said AC was blowing hot air. I assumed she meant non cold ambient air. Turns out it was actually heated air.
Tech was called by her and he also assumed it was non cold ambient air. He troubleshoots system and can't find anything definitive. He mentions the age, R22, a "sticking reversing valve", and that the system should be replaced.
I come home, pull the cover, test the voltage output to the reversing valve solenoid and it is constant.
Later that day the AC randomly switches to heat. I test the output to the solenoid and it is still constant. I shut the system down and cycle the solenoid a few dozen time, no problems.
I open the unit up and find that plug to the solenoid is sitting on the terminal making minimal contact. I plug it back in and all seems well now.
But.. folks on another site seem convinced perhaps the problem will re-arise due to a "simple problem" that they will give no indication of what it is.
Any ideas?
Low voltage to the coil?
Thanks for any input….
Tech was called by her and he also assumed it was non cold ambient air. He troubleshoots system and can't find anything definitive. He mentions the age, R22, a "sticking reversing valve", and that the system should be replaced.
I come home, pull the cover, test the voltage output to the reversing valve solenoid and it is constant.
Later that day the AC randomly switches to heat. I test the output to the solenoid and it is still constant. I shut the system down and cycle the solenoid a few dozen time, no problems.
I open the unit up and find that plug to the solenoid is sitting on the terminal making minimal contact. I plug it back in and all seems well now.
But.. folks on another site seem convinced perhaps the problem will re-arise due to a "simple problem" that they will give no indication of what it is.
Any ideas?
Low voltage to the coil?
Thanks for any input….