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Coleman 7333C881 A/C

My roof top 7300 series shuts down after running for about a half hour on really hot days. The unit will run fine all night long. Turned all the way up I'm getting 52 degrees at the duct on high blower. How cold should the air temperature be? Run on low cool it will trip the breaker after about twenty minuets too. I normally have it set between half and three quarters on high blower. Am I looking at the blower motor as the possible cause or a capacitor?

Posted by Anonymous on

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6 Suggested Answers

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Posted on Jan 02, 2017

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Ice maker
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SOURCE: Coleman rv roof air conditioner

(1)Check compressor contactor or relay if it stock in the close position
(2)Check for welded contact points
(3)Check switch control for defect
(4) Check if compressor contactor still geting power when it is off


Let me know what works for you.

Posted on Mar 30, 2008

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SOURCE: 579 series, 13.5K BTU Rooftop trips AC circuit breaker in hot weather...

Is your condensing unit located in a well ventilated area and have an ample space, atleast a foot, from the rooftop flooring? Just make a check that free flowing outside air properly ventilates the condensing unit specially on high ambient temperatures. Hope this would solve your problem

Posted on Sep 16, 2008

  • 121 Answers

SOURCE: coleman rv a/c

It is definitely with the compressor. It should more like you may have a weak winding in the compressor, you can a hard start capacitor (sp5 ) that will help the compressor on restart. Note that this is a last chance solution for a compressor.








Posted on Oct 01, 2008

dnewcombe1
  • 1564 Answers

SOURCE: 1996 Coleman Model 7333C8876. Have 2 units on

Check to make sure the drain tube is clear. It sounds like the blower fan is dragging in water buil-up.

Posted on Jul 24, 2009

projdoc
  • 2237 Answers

SOURCE: Air conditioner trips circuit only in the evening?

first off, it's illegal to release freon into the atmosphere. the epa could charge you $32,500, so keep it under your hat. second, if it's getting too cold where the evaporator coils are icing up, it's too lille freon, not too much. as for the breaker tripping, your compressor might be wearing out. if it's pulling too much current, the motor is failing and the compressor needs replacing. and do not do it yourself unless you're certified by the epa to move freon and have the proper equipment to recollect the used freon.

Posted on Jul 29, 2009

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Re: re-directing the water dripping over door ! Stop at RV parts store and get yourself a tube of "Dicor" self leveling sealant. It's recommended for rubber roofs, but works well on most roof surfaces.
Then I simply run a 3/8" bead of "Dicor" across wherever the run-off from AC is coming down, and re-direct it so the run-off comes off roof elsewhere. Don't try to smooth it out or anything, as I said, it is self leveling, just use a caulking gun, lay a bead about 3/8" and allow it to set for a few hours if you can. Make sure you pick a time where AC is off for a couple hours so (run-off) water isn't present. You"ll see the path (stain) on roof where it travels to guide you for redirecting. It's a simple fix, and no screws or nails required. Use the rest of the Dicor to fill in any gaps, cracks etc you see on sealant on the roof while your up there, but clean those before applying. If you can wipe your intended path down with some mild cleaner prior to applying bead, it will help it stick better as well. Even a little dish soap in water will do, just be careful, it gets pretty slippery when soap on there. Quick rinse with water then dry with rag, or let the sun dry it. Actually on a rubber roof, It should be scrubbed with mild detergent at least once a season anyway.

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(1)Check compressor contactor or relay if it stock in the close position
(2)Check for welded contact points
(3)Check switch control for defect
(4) Check if compressor contactor still geting power when it is off


Let me know what works for you.

Mar 30, 2008 | Heating & Cooling

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