No Matter Where Thermostat Is Set, RV AC Will Not Cycle On

by Willy
(Illinois)

Question: My AC cools very well but it will not cycle on and off (compressor). No matter where we set the temp control the compressor won't cycle on and off. It cools very well. ?


Robbie: Do you have water running off the side of the coach when the air conditioner is on? If yes the air conditioner is fine.

Are the coils freezing to the point the air doesn't flow into the coach? If yes you need to have the air conditioner looked at by a tech. Newer AC units have a freeze protection sensor in the coils that prevent freezing, and it might have fallen out and just need to be placed back in position.

You say the air conditioner is cooling fine so if you're not freezing up the unit and you have water running off the roof, I'd relax and enjoy the cool temps.

Robbie

Comments for No Matter Where Thermostat Is Set, RV AC Will Not Cycle On

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Jul 24, 2011
 YES
by: WILLY

YES THERE IS WATER RUNNING OFF THE ROOF AND YES THERE IS PLENTY OF AIR. IT DOES NOT FREEZE UP IT JUST WON'T CYCLE ON AND OFF WE HAVE TO TURN IT TO FAN ONCE IN AWHILE TO KEEP FROM GETTING TO COOL. THIS UNIT IS ON A SMALL(8 FT)POPUP TRUCK CAMPER.
Jul 24, 2011
 Bad Thermostat
by: Anonymous

OK, now i understand. You can't regulate the temp in your camper. If you are freezing out at the lowest setting it sounds like a bad thermostat to me.

Robbie
Apr 30, 2016
 Dometic ac
by: Anonymous

The thermostat stuck on 32 degrees. Tried to reset it and it somewhat works. However the compressor will cycle on and off but fan continues to run. Does it matter if fan is Hi/Lo or should b on auxiliary?
May 23, 2018
 AC dripping off roof NEW
by: Anonymous

So its a good thing water dripping off side off RV roof. My husband is do worried it will fry the wiring underneath the roof rv unit. He does not see a seal around bottom of unit around air conditioner. But before repkacing the capacitor saw there were pads on each corner.

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Robbie Warford, San Diego RV Repair

Hi, I'm Robbie. Welcome to Money-Saving-RV-Repair.com!

Like the name implies, this site is all about helping you save money while keeping your RV in tip-top shape--and that is all about you having the knowledge to do so.

I've been a technician in the RV industry for 30 years, operating out of San Diego, California. And let me tell you, I love my job.

But I also love empowering RVers with the knowledge they need to make the right decision on repairs, or to make the fix themselves--and that, my friend, is the reason for this website. I hope you enjoy.

Or, learn more about me, my RV service practice, & this website here.