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cekkk's avatar
cekkk
Explorer
Sep 11, 2013

Air Conditioner Cycle Question

While in bed last night I found the AC was cycling frequently, on for less than a minute, then a couple minutes off. I'm thinking this isn't good for the compressor. Right, or not?

The outdoor temp was close to the indoor temp, but the monsoons have left the desert with rare high humidity and the TT would have been stuffy without AC.

This morning I loosely covered the thermostat so it's not having cold air blown on it.

Today, late morning, it's 79 degrees inside and 86 outside with bright sun. AC is on and off in more "normal" intervals as the outside temperature rises. Yesterday, the AC pretty much ran constantly all afternoon when the indoor/outside temp differential was greater.

The poor insulation is probably the cause of the frequent need for the AC to come on when temps are close, and the continuous running when there is a greater temp difference, and there's nothing I can do about that. But I'm wondering if our single AC is getting beaten up. Comments? And thanks.

6 Replies

  • 2oldman wrote:
    Always a good idea to verify your incoming voltage is 110 or better.


    True, but that has nothing to do with short cycling.
  • If your thermostat is digital, the differential could be set 1 degree or less. OR

    Your unit might be some way directing conditioned air flow near the thermostat, cut the bottom and back out of a cracker/cereal or other box and hang it over the thermostat to block the airflow and see if your unit runs longer between cycles.
  • On our last fifth wheel it would short cycle when I think it iced up - this happened when we arrived at the campground - high temp and humidity and the Ac ran quite a long time to cool down the fifth wheel.

    I am not having the same problem with the AC in the fifth wheel we presently own.

    Both were "ducted" models. What I found to help was to open up the vents on the AC unit (ones on the portion of the unit that is in the trailer) so it would get more air flow
  • Always a good idea to verify your incoming voltage is 110 or better.
  • Quick cycles are bad for the unit, but it sounds like you may have found the problem when you prevented cold air from being blown directly on the thermostat- that is a no-no.