Question about Dometic Air Conditioners

1 Answer

Compressor short cycling

My dometic ducted RV AC compressor will ocasionally cycle on immediatley after the compressor cycles off, not allowing head pressures to come down, and causing my generator to overload and the circuit breaker to trip. This also happens when I'm plugged in to 30a power, but the thermal overload will kick in and allow the pressure to come down before compressor re-start. I've replaced the thermostat, compressor, and circuit board with no solution to the problem. Can a time delay relay be installed keep the compressor from re-starting for lets say 45 seconds. If so can you recommend a part # and supplier?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 828 Answers

If the compressor is run off of a relay then you could install a delay timer to prevent short cycling.

http://www.climatedoctors.com/items/item.aspx?itemid=429504

Posted on Jun 04, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Fan run compressor run but no cold air


DuoTherm by Domestic-Fan runs, no cold air - iRV2 Forums

www.irv2.com > ... > RV Systems & Appliances
Jan 22, 2012 - 12 posts - ‎4 authors Duo Therm by Dometic 13500 BTU air conditioning with ducting, furnace. I. ... If the fan runs but no cold air and the compressor feels like it is ...

A/C just stopped blowing cold.....any ideas??! - RV Forum

www.rvforum.net > ... > RVing message boards > Trailers & Fifthwheels
Jul 27, 2008 - 23 posts - ‎6 authors We have run it continuos like this before without any troubles. Thanks for the help! ....When you switch the AC unit on, the fan runs, but the compressor doesnt fire up. You used to be able ... You can find Dometic here. Logged. Dometic Duo Them Air Conditioner Cycles
4 posts
Jul 21, 2015
Dometic SL-135 A/C problem
7 posts
May 29, 2012
Dometic ac compressor runs but fan does not on auto
6 posts
Jun 5, 2011
AC blower runs full time w/ AC on
14 posts
Sep 2, 2009
More results from www.rvforum.net

Nov 18, 2015 | Dometic 705600009 A-284, SMX II Retrofit...

1 Answer

My ducted roof top Dometic Briskair will run fine when first turned on for one complete cycle, then the next cycling is short cycling, 2-3minutes on and 30-60seconds off.


Sounds like a low freon issue. Even though its cooling well at first after its run a cycle the amount of freon is to low causing it to cut out probably from lack of freon pressure. Get it checked soon cycling will definitely shorten the life of your compressor. Hope this helps Chris

Jul 15, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

Dometic AC cycles on and off


sounds like you don't have enough of a charge in the system of "free-on". that would make the a/c cycle and cycle to try and keep the pressure up and would also contribute to the lines frosting and freezing

Jul 04, 2012 | Dometic Rooftop RV Air Conditioner

1 Answer

My Dometic AC on my travel trailer cools well but I cannot set the fan to stay on when the compressor cycles off. Can a different switch or board be installed to allow the fan to stay on?


An energy saver setting is what it sounds like. Turn off energy saver feature and fan should run 100% and compressor cycle on-off separately.If not familiar with energy saver setting .make sure it has one or not before disregarding this.

Feb 28, 2012 | Dometic Rooftop RV Air Conditioner

1 Answer

My A C conpressor is cycleing realy fast, every few min. would it be the conpressor capacitor ?


No. It is "short cycling" probrably because it is low on refrigerant which means there is a leak somewhere. The refrigerant cools your compressor windings. If it is low it cannot cool the windings and it will stop the compressor due to a temp overload. As soon as the compressor cools back down it closes the bi-metal switch and allows the compressor to start again. The cycle will repeat itself until the compressor finally quits. Hope this helps.

Please rate my response on FixYa.com

Aug 03, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

We turned the ac unit control knob in between the high cool and low cool, which turned off the ac unit, but messed it up where it shorts the circuit breaker when we try to turn it back on. What did we do?


YOU MIGHT OF JUST SHORT CYCLED IT . ALL AC UNITS NEED ABOUT 3-5 MIN TO EQUALIZE PRESURE ON COMPRESSOR BEFORE RE STARTING  . IF THIS IS RV AC MAKE SURE YOU HAVE WELDING TYPE EXTENSION CORD

Apr 22, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Penguin 13500 ac short cycling


UNITS THEMOSTAT IS BAD REPLACE THERMOSTAT IF DONT SOLVE PROBLEM MAKE SURE UNIT IS NOT FREEZING UP AND BOUNCING OFF A "FREEZE STAT" CASING COMPRESSOR TO SHORT CYCLE

Jul 31, 2009 | Dometic Rooftop RV Air Conditioner

5 Answers

My dometic 15k brisk-air cont. cycles on-off


Actually, the dealer is somewhat correct. In the hotter months of the summer, the rooftop units have a tendency to freeze up if not run on high cool due to the lack of air movement across the evaporator. If the unit fines on High/Cool, then run it in that mode but adjust the thermostat.

It should not however, cycle on and off that fast unless you have a bad freeze switch or the incoming AC is too low. If during that 8-10 seconds, the air begins to get cold and then it shuts off, then I would say you have a bad freeze switch. If it runs fine on high, but shuts off in low, I would say it is a lack of air movement.

Hope this helps,

Jeff

Rate me please!!

Jul 06, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

AC is off but compressor cycles periodically


most likely your compressor contact is stuck closed, and will need to be replaced. if the fan also runs when the compressor comes on you may have a short between the t-stat and unit. hope this helps.

Jun 14, 2009 | Dometic Rooftop RV Air Conditioner

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

1,158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Air Conditioners Experts

Bill Long

Level 3 Expert

577 Answers

Tim Whalen

Level 3 Expert

3056 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Are you a Dometic Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...