$150 Roof A/C Lesson

[redbaron73]

Originally Posted by Snomas1

Your A/C can also shut down when the coils freeze up. Usually when it is set too low. We keep ours set @ about 76 degrees to prevent this from happening.

I run mine at 67 without a problem. If a unit can't maintain this operating temp then there is something wrong.

There are times that my unit never shuts down. Keeping it clean is key.

[roadtraveler]

Originally Posted by redbaron73

I run mine at 67 without a problem. If a unit can't maintain this operating temp then there is something wrong.

There are times that my unit never shuts down. Keeping it clean is key.

I like it cool when sleeping and 76% would be to warm for us. 67% sounds much better!!

[vagabon1]

Originally Posted by HicksRA

One day into our vacation, the front roof a/c unit quit working (dual Dometics with the integrated Comfort Control thermostat). It just cut off when it cooled the coach down to the proper temp and then would not come back on.
I could move the setting to low fan or high fan and the fan would come on, but no compressor. Move it to auto and nothing would come on. I immediately assumed that the starting capacitor had bit the dust, so I called a RV Service place to come out and fix it.
When he arrived he said the first thing we should do is reset the thermostat. I had no idea the thermostat could even be reset. He showed me to turn the thermostat off, press the "Mode" and "Zone" buttons at the same time and turn the stat on. After a "FF" symbol appears, turn the stat off and back on.
Lo and behold after resetting, the front air fired up and everything was good again.
So with a service charge of $150, I learned that if your a/c's are acting up, the first (and easiest) thing to do is reset the thermostat......

Maybe this can save someone else a service call in the future.

almost happened too me but I got lucky and happened too have the manual,great post

[harleychief]

Just thought I'd let you know that I couldn't get my 3 zone system to reset this way.

[Red Dawg]