Roof Air runs alot

As everyone has said- it won't hurt the air conditioner. That said, cleaning the units coils is always a good idea, and many, many ducted installations can be made much better by inspecting the ductwork for leaks, and sealing any you find up. The ductwork is usually pretty leaky.

Tomboy2 wrote:
Have spent the last few days in Texas in 90 plus temps. The roof air runs almost constantly in an attempt to keep the coach cool. Should I be concerned abut the units overheating?

NO, just yourself oveheating.

IF the Roof Air overheats.. it will stop.. Here is why.

First the motors are thermally protected, if they get too hot the thermal breaker opens and shuts them down.

Second (And you may wish to check this in the AM) if the condenser coil gets gunked up (Which is normal by the way, it happens) then air can not pass through it properly.. I have two A/C's on this 38' class A, one of them suddenly strated popping it's circuit breakers.

Had an Idea, went up on the roof with screwdrivers and compressed air and popped the covers.. Applied the compressed air to the coils in a manner designed to de-gunk them and.. It works great now.

(Other A/C 2 days ago went BOOM Vibrate,Vibrate,Vibrate (Shut off by me) went top side and found I had been China-Bombed.. The condenser fan blew up... If anyone has an Advent Air (Seems they are made in China and imported) The condenser fan is identical (With one minor difference) to a Coleman part.. The difference, better construction on the coleman part.

when our front AC quit working the back air didn't shut off. We were in 110 degree heat in Nevada! We went to Lowes and bought a couple rolls of the silver insulation and put it on all the windows and windshield. We also have the sun screens on the windshield but the silver insulation helped much more. Works if you're staying in one spot for awhile. We also have the inserts for the vent fans and covered the skylight in the shower. Dark inside but a few degrees cooler.

As long as your voltage is good the unit is designed to run continuous.
It is a machine, it does not get tired.

That's Texas. It is normal. Not many RVs are built to deal with really hot, humid climates and sun loads.

Come out onto the southern Great Plains in July or August and the roof air will run full time during the day, and might not keep the coach cool, until the sun goes down.

How well it works at night depends on what "cool" means to you. When it is 95-105F outside, "cool" for me means about 80F in the house, a little higher in the RV because the vents will be blowing air 15-20 F colder directly on me.

When I lived in Michigan I thought 80 was hot.

Tomboy2 wrote:
Have spent the last few days in Texas in 90 plus temps. The roof air runs almost constantly in an attempt to keep the coach cool. Should I be concerned abut the units overheating?

No entirely normal. My RVs have had loads of time in hot weather with AC running continuously. No damage done.

My home unit runs 24/7 here in Ocala with temps in the low 90s. Changing out to a 5 ton as we speak vrs the 3 1/2 ton. Previous owner added a really large family room on which thru the "balance" off. Also adding another air return.

I ran two practically non stop while in Rockport Texas one summer. No issues! Oh! Only the electric bill. lol

No

It will run 24/7 for months at those levels of temps.
Just make sure the filter is cleaned and the fins are clear of debris from time to time.

Once the temps get above 75 we make sure all window blinds are down or turned so no sun light comes in. We have awnings over each window plus the patio awning all are deployed. Above 80, Guests/kids are told to stay in or out no going in and out. We leave the A/C on 24/7 anytime the temps are over 80 outside. It helps to cool everything down inside and the A/C doesn't have to work as hard to keep it comfortable inside.