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Topic: A/C Runs Continuously (Read 498 times) previous topic - next topic

A/C Runs Continuously

I have the original Dometics (97 270) and 4 button thermostat. Both A/Cs work well but the rear runs continuously rather than shutting down when it reaches the desired temp. What's up? Thanks.
jor

Re: A/C Runs Continuously

Reply #1 –
Sounds like the thermistor for the rear unit is not working

Re: A/C Runs Continuously

Reply #2 –
Is zone 2 set to auto?

Re: A/C Runs Continuously

Reply #3 –
Quote
Is zone 2 set to auto?

Uhhhh... well, actually... no. Forgot about that. Thanks. Good to go.
jor

Re: A/C Runs Continuously

Reply #4 –
I had the contacts go bad and fuse in one of the potted relays on the roof and had to replace it on my 93 years back... Still have one: Potter & Brumfield
T9AS1D22-24
N.O 30A

desolder/resolder.

Circuit breaker only way to shut it off - could have hung meat in the bedroom.
 

Re: A/C Runs Continuously

Reply #5 –
I think the fans can be set to "Auto" "High" or "Low" .  If it is set to high or low the fan will run continuously even if the compressor isn't running.