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Old 09-16-2016, 01:47 PM   #11
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Join Date: Apr 2016
Location: Columbia, SC
Posts: 103
The PI surge protector showed no error codes. The answer may be to relocate the t-stat, replace it or possibly both. A bitter pill to swallow considering the trailer is less than 6 months old. But I keep reading about all the mods everyone is doing to theirs, so what the heck.

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Old 09-16-2016, 10:12 PM   #12
Join Date: Oct 2015
Location: Fort Smith, Arkansas
Posts: 62
Originally Posted by CarpeDiem View Post
I suspect the answer is "the nature of the beast". But here I go, sometimes the a/c will cycle on and off two or three times a minute. Have any suggestions on overcoming this first-world problem?
We had same problem a couple of months ago. It was really hot with daytime temps over 100 and the A/C ran constantly during the day. It never started cycling until sundown. On the third night at about 4am, my wife woke me up saying we had a problem. It was doing the on/off thing a couple of times a minute. At the time, I just set the temp up a degree and that stopped it. Later, I set it back down and didn't notice that problem anymore.

A couple of weeks after that, we took our TT in for its one year checkup and I mentioned what had happened. The service guy said they do that sometimes and he suggests putting the setting to high or low instead of auto. That would let the A/C cycle but keep the fan from starting and stopping so fast he said.

He also went straight to the unit, took off the grille and reached up somewhere in there and pulled out some pieces of cardboard - almost like heavy card stock. He said it was partially blocking the air to the ducts. From what I saw, it looked like this may have been a problem he knew about from experience. It has not done the cycling on and off anymore since that was corrected and the air blows very strong now from the ducts - like night and day from before. It is also a lot quieter than before even though the air flow is much, much stronger. Before I would put my hand to the duct opening and feel the flow but 12 to 18 inches away and you didn't feel it. The TT did stay cool though. Another thing was the fan stayed on high all day and only shifted to the low speed just before it would cycle off.

Since the cardboard removal, we've camped during some more of those 100 degree days and the A/C cycles off every 20 minutes and then back on after about 10 minutes or so like I would think that it should. It also stays most of the time on the low fan speed once the temp inside cools down. We set it for 78 during the 100 temps and just before it will cycle off, it is starting to feel cold inside so it is cycling at the right time.

I think the blockage was the problem. You might check to see if you see anything like that in yours. By the way, our T-stat is digital.

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2011 Ford XLT Supercab
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2016 Days Camping : 32
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