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Topic: Both roof A/C running on front temperature sensor keep us very comfortable (Read 820 times) previous topic - next topic

Both roof A/C running on front temperature sensor keep us very comfortable

We left Texas heading to the Pacific Northwest to find cooler temps and now find that Texas is cooler than we are up in Oregon.

But since I put a switch on our rear roof air conditioner temperature sensor to disconnect the bedroom sensor, both A/C units are running on the front temperature sensor, keeping us quite cold in 100 degree outside temps.

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #1 –
Barry....Our coach was built with only one sensor, the front thermostat.  I installed one in back last year so it now has the normal configuration.  In our experience, it works fine in temps up to 107 in Tucson last year.  What advantage does a single sensor have?  I should add that the back was often too cold with only one sensor.

I thought you guys were in Colorado.  When did you move?
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George Hatfield

  Never ever use World Line Motors of Nacogdoches for service!

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #2 –
The original owner of our coach had two separate thermostats installed. He said it was not working well with just a sensor in the back. It seems to work well.

Mark Z
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Mark and Tanya
Milton , Florida
US Navy Veteran (DV)
1999 U270 Special 40' CAI , 2015 Jeep Wrangler Sahara

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #3 –
Temporarily using only the front temp sensor for both roof A/C units, assures that one temp set-point is managing both roof units, which is helpful during the day in hot weather.

With the rear A/C using the normal bedroom temp sensor, we found that sometimes the bedroom cools down enough to satisfy our thermostat and without realizing it, the rear A/C has been off for a while. So we had to purposefully set the bedroom thermostat to a very low setting to be sure the rear A/C unit continues to assist the front A/C unit in cooling the front of our coach.

Using one temp sensor is not a big deal, but it is quite easy to accomplish, so we do it and it helps. Like when your coach was built, if any roof A/C unit does not have a connection to a temp sensor, it simply uses the thermostat's temp sensor.

We have also closed off the bedroom and bath ducted A/C outlets to direct both rear & front cooled air to front ducted outlets. On a hot night, we will cover the front ducted air outlets. It all works to manage a limited resource.

By the way, we just vacuumed a layer of dust off our thin foam roof A/C filters that are sandwiched above the ceiling plastic grill. And while the filters were out, we also cleaned a layer of dust off the wires and grid up inside the A/C unit. Using our vacuum and a paint brush to knock the dust off, did a nice job to prepare us for Oregon's 102 degree temps.

George, we changed our mind and decided to only stay in Creede Colorado for one month and take our time heading to the Pacific Northwest for a change of pace. While traveling on the main highway just east of Cortez, CO we were quarter mile from a flaming wildfire threating some homes. Showed us how real the many wildfires are this year.

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #4 –
Getting close to our place Barry, nice breeze off the lake
John
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #5 –
We continue to use the OEM temperature sensors for our air conditioner and furnace units. We have been satisfied with results. We tweak the temperature settings for comfort.

While in MO last week, temperatures were up to 104F. The campground had 30A service. We ran the generator during the heat of the day and the coach remained comfortable. We would shut down the generator around 9 p.m. One air conditioner was sufficient for comfort during the night and morning. We use an adapter that allows us to run either air conditioner from a 30A outlet. We cannot run both at the same time on 30A service.
J D Stevens
1997 U295 CAI 36' Build #5085
2002 Subaru Outback
Motorcade 16869
Bellville, TX

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #6 –
I just set the bedroom lower than the front. THen again I have three AC units and if it is really hot all three come on.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #7 –
RE: We ran the generator during the heat of the day

Several times, in the past, we found ourselves camping in hot weather with only 30 (or 20 amp). This was a problem because we needed both roof air conditioners to keep up with the high temps.

So we permanently 'separated' our rear roof A/C power source by putting a 15-amp male plug on the air conditioner cable at the under-bed main breaker box. And connecting a female 15-amp connector to the air conditioner breaker. Normally these two 15-amp cables are plugged together.

But when we need both roof air's on 30-amp like we are today, we unplug the male plug and with an extension cord, plug the rear roof air into a campground 15-amp outlet, which even works with a GFCI outlet. Our main shore power cable plugs into the same campground pedestal's 30-amp outlet.

Most campground 15-amp outlets are on a 20-amp breaker. Roof air draws about 14-amps and will work ok on either a 15-amp or 20-amp breaker.

Re: Both roof A/C running on front temperature sensor keep us very comfortable

Reply #8 –
Quote from: Barry & Cindy –
RE: We ran the generator during the heat of the day

Several times, in the past, we found ourselves camping in hot weather with only 30 (or 20 amp). This was a problem because we needed both roof air conditioners to keep up with the high temps.

So we permanently 'separated' our rear roof A/C power source by putting a 15-amp male plug on the air conditioner cable at the under-bed main breaker box. And connecting a female 15-amp connector to the air conditioner breaker. Normally these two 15-amp cables are plugged together.

But when we need both roof air's on 30-amp like we are today, we unplug the male plug and with an extension cord, plug the rear roof air into a campground 15-amp outlet, which even works with a GFCI outlet. Our main shore power cable plugs into the same campground pedestal's 30-amp outlet.

Most campground 15-amp outlets are on a 20-amp breaker. Roof air draws about 14-amps and will work ok on either a 15-amp or 20-amp breaker.

I found I had to do something similar as 1 A/C in this heat is not enough.
Now I always can run both. 8)
DUAL POWER ADAPTER
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2003 U320 40' AGDS
Beamalarm, Foretravel technical help and specifications
"Whatever the mind can conceive and believe, it can achieve"