[Archived]

Sorry, can’t help you as to cause but it appears you have OTR A/C. I have, on more than a few occasions, run the series 60 and OTR at idle for extended periods of time with no ill effects. Hopefully, it’ll be cool enough at night you won’t need it then so your neighbors may put up with it if you beg.

[Archived]

Dawn…

Not sure if your system is like ours or not but if it is this may help you.

We had a weak breaker on our primary RVAC switch and your secondary air will not run without the primary running … the secondary is really like a booster… we were burning up and switched the breakers from secondary to primary etc and it worked fine… ( you need a GOOD electrician to do that for you)…I ordered new breakers from Ben Cummings at Parliament. We had to shut everything down completely to do that however but it worked fine… Other possibility would be your motherboard… they wear out… I think someone may be rebuiding them again… Ben would know that answer too.

It could also be a freon problem or compressor… like I said if the primary doesn’t run then the secondary won’t run… at least that’s how mine were set up…. we totally rebuilt our unit and it ran great after replacing both compressors and motherboard.

I hope you still have your 2 Cruisairs working that should help a lot if you keep your shades closed and maybe buy a fan to help circulate the air that you do have…. H’s are hard to keep cool when it’s really hot.

Hope you get it running.

Cheers, Diane

[Charles]

I don’t think H’s are hard to keep cool. Today was a good example for us.

We have four roof 13,500 btu units (the volumn of air is quite nice).

Craig and I have been in the desert for a few weeks. The Liberty has been in the storage garage where we have no air and only a 30 amp plug (no air).

When we pulled the coach out of the garage, the inside was 105 degrees (approaching 111 today in Palm Springs). Once out of the garage, I turned on all four roof airs along with the dash air and the aux unit. Everything in the motorhome was hot so it took a little while. In about 3 hours, we were at about 74 degrees inside with the outside temp at 95 and falling as we were driving west.

We drove the coach towards the coast to Prevost Mira Loma to have a sensor checked in the rear end (dash light came on). At almost 6 PM, the outside temp is 90 degrees and I have only two units going. Temp fell to 73 degrees inside and it’s nice and cool. We are in the sun still, too windy for the awnings.

Not sure why you are having trouble keeping the ‘H’ cool.

Safe travels to you and Larry.

Mark

[Bryan]

Mark….

I don’t have trouble keeping my H cool… I NEVER let it get hot… Your coach was 105 inside… wow… I would have died…We keep ours about 68 and I cover with a blanket while travelling with the OTR on… I could not handle 3 hours waiting for 74 degrees inside… Our days here have been topping out at 100-105 and the humidity it very high.

There are complaints all the time about the Hs being hard to keep cool especially in the front on a very hot day… with the huge windshield area and a/cs that aren’t always running up to snuff… Lucky guys like you and Craig won’t likely run into the same problems any time soon… but I would be very concerned about my interior being exposed to 105 degree temps as everything inside your coach is glued together and those high temps over time will eventually break those glues down…even in a new Liberty.

Cheers, Diane

[DON]

Diane,

It is rare that we have the coach in the desert at this time of year. Actually, 105 isn’t as bad as it sounds as we have very low humidity. It is not stifling when you first walk it. After staying 10 minutes or so then you start feeling the heat.

My Dad had been sick and started to fail in Feb. with him passing in June. (94 yrs. old). We were not able to close the house in Palm Springs so we were late doing it. I think the Liberty can handle extremes as it won’t happen often.

With the dash and aux air on, it didn’t seem that hot. Driving to our destination the coach cooled down and 74 is cool with no humidity (I like 30 degrees but I can’t be selfish, LOL).

Hope to see you folks at the next no rally, rally.

Mark

[Archived]

Mark, I think you knew going in what you were giving up to have more thn two slides. No bus A/C. I would be beside myself if I had to wait that long. G

[Bill]

Mark;

We are very sorry hearing about the passing of you dad. We hope you and Craig are doing well.

I think your coach can handle the heat. I leave my coach outside and just open a few windows during the summer in central Texas. We see 98 to 105 degrees for about 120 days per year. I think our coaches are better built than we give them credit for.

Michael & Kristin

[Archived]

Most cabinet surfaces are plastic and are bonded to the wood structure. The process to de-laminate the surface material is to heat it. I once worked in production in a factory that made laminated plastic products and when we had to repair damage we removed the plastic by heating it with an industrial heat gun.

I have no idea what the temperature was when the adhesive softened so the surface plastic could be removed but it was too hot to touch. That means it was likely around 115 degrees or more. I think Michael is protecting his coach by opening the windows. I would be very concerned however if I had a coach in high ambient temps, sitting in the sun with the windows closed I would guess the internal temps under those conditions would be high enough to release the adhesive bond.

[Tim]

Hey George and Corey,

We weren’t uncomfortable driving while the coach cooled down. I’m not sure when the coach hit the ambient temp of our thermostat. I just know at 3 hrs. the coach was at the cool temp. It may have hit that temp at 1 hr., we were comfortable at the front while the back was cooling down.

The whole interior was at 105 at start including the inside of the cabinets, etc. In any coach, it will take a little time to cool down. The air is so cold coming out the vents that it is a pleasant experience walking to the back when the cold air hits you in the face from the ceiling vents.

Physics are physics, it will take any coach a few minutes to cool down no matter which type of air that you are using.

So, once you arrive at your destination, what type of air are you utilizing to keep cool? You can’t use OTR air once parked.

Mark

[Archived]

Mark, the OTR will drop the bus from 85 to65 in less than 10 min. When parked we use a two stage bsmt unit and cruise airs as needed. Geo.

[Archived]

I have a question for those who have the “Central HVAC” units in their coaches, not the Cruiseairs.

I understand they no longer make these AC units. Do those who have these units find sufficient repair facilities & parts when something goes wrong with these units since they are no longer being made?

[Fred F.]

Tim & Cindy, The original R-Vac units can be rebuilt by a competent AC guy that is willing to do it. Most unfortunately have become simply r&r guys. The alternative is the Coleman-Mach retro-fit about 6K

[Herb]

Well, first let me apologize for not replying to anyone’s posts after I posted. We had no cell service and horrible internet service. What little I was able to get I used to do some work.

Anyway, I remembered I had gotten an email from Featherlite with the events they would be attending. So I dug through my archives and found that they were set up for a week literally 3 miles from us. They were such help to us in Daytona we thought it was worth a shot. So we drove over there, Butch talked to a tech. The tech said if you have time I will just follow you over there and check it out.

He got in our 3rd bay and sure enough Jon, bad motherboard. He thinks maybe start capacitor caused it. He said, of course, no part for it, but said it could be rebuilt. So we survived in SD with our cruise airs but as we approached southern OK holy moly it was hot!

Im sure this happened because we are looking at newer coaches and just put 8k into her for bushings, a-arms, etc. we got the DMI at Prevost and we were pleased with the report. We wanted to get her ready for a new owner.

I really appreciate all the quick response! I can always depend on yall!

Thanks again.

[Archived]

Dawn…

So glad you found the problem… I said that it could be the motherboard… as ours went out too… Had to rebuild a new setup for the unit and it worked flawlessly.

Cheers, Diane