Question about Dometic Rooftop RV Air Conditioner

2 Answers

THERMOSTAT TURNS FAN ON AND OFF, BUT COMPRESSOR WILL NOT COME ON. JUST BOUGHT TRAVEL TRAILER USED. OWNER SAOD HE THOUGHT A FUSE NEAR COMPRESSOR ON ROOF.

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 127 Answers

There is no fuse near the compressor on the roof. The only thing on or near compressor is the thermal cutoff switch either located on the top of the compressor or the side (depending on the model). You can check the thermostat rather easily with a 12V Test Light (available at most automotive stores) or a voltmeter.

Take the face plate off of the tstat. You should have a 6 wires or so (again, depending the model or part number of the unit and the tstat). If you turn the thermostat to high/cool, the yellow from the thermostat should have power to it. This is the cool setting. If there is no 12V going to the yellow wire, then you have a bad thermostat. If there is power, then you need to get up into the control unit of the AC and see if you have power at the yellow wire there. If you do not, then there is a problem in the wiring in the wall. If there is power, then you may have a bad control board.

There is a relay on the control board that controls the compressor. If you turn the unit to High/Cool and you do not hear the relay clicking, then you have a bad board.

You may want to get a tech to take a look at it, it can get complicated.

Hope this helps,

Jeff

Posted on Jul 03, 2009

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 340 Answers

Now the owner He's smiling, I asssume it is an older unit make sure the t-stat is set properly.cooling likely compressor issues could be start components or bad compressor get qualified service Good luck Tom

Posted on Jul 03, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

1973 travel trailer owners manual


hi Patrick.
the reason for sending you to this link is because there is a few manuals there,so i thought it would be best for you to pick the best one for you.
1973 travel trailer owners manual Google Search

Nov 22, 2017 | Cars & Trucks

1 Answer

Where can I find an owner's manual for a 1985 Nomad 5th Wheel,25 foot?


[PDF]travel trailer fifth wheel owners manual - Skyline Corporation

www.skylinecorp.com/faqfiles/1YearTTFWOwnerMan-old.pdf
Nov 15, 1993 - a quality product along with the very best service available in our ..... in this manual includes fifth wheel travel trailers unless otherwise indi-.

Manuals - 1989 & older - RVing-The Midwest Connection

www.rvingthemidwestconnection.com/manuals1989older.htm
1989 Skyline Nomad Manual Request Thank you, Dean Will (4-15-14) ... looking forowners manual for a 1989 Okanagan 5th wheel trailer. ...... Looking for an owners manual for a 1985 Cobra motorhome on a Ford Chasse I have the owners ..

PDF]Skyline Travel Trailer Nomad Owners Manual

www.rjwoerheide.com/skyline-travel-trailer-nomad-owners-manual.pdf
repair manual 2015 used travel trailer - 2015 skyline nomad 190 and 1995 ... bing jabiru 2015 nomad travel trailers/5th wheels - nadaguides ruby nomad ... 1985 service free 1997 skyline nomad 3710 travel trailer lexington, nissan pulsar ...

Jan 01, 2016 | Cars & Trucks

1 Answer

Hi,I have a travel trailer 37ft. Problem with my ac, the fan starts good but my compressor does not kick on. My next door neighbour says it's the compressor that is done. Could you help me?


see this causes and fix it. God bless you
Motor Trouble Cause Diagnostic Procedure Repair Procedure Electrical Power is Off Check that all service switches for the equipment are in the "on" position.
Check for voltage at the pump motor or pump controls. If no voltage is found, check for voltage at the electric panel.
If power is on to the building, check fuse or circuit breaker serving the electric motor that won't run.
Check for local reset button on the motor (popped out = off )
Check for other power reset or power off buttons such as an access door compartment safety switch that turns off power to the equipment (found on A/C blower compartment doors)
Turn on "off" switches.
Replace bad fuse. Reset circuit breaker; if necessary replace bad circuit breaker.
Let hot electric motor cool down, then push in its reset button.
Be sure all safety interlock switches such as on compartment doors are depressed and that the doors are securely shut. Replace a bad safety switch.
See
ELECTRICAL POWER SWITCH FOR HEAT
FAN AUTO ON Thermostat Switch
WATER PUMP ELECTRICAL SWITCHES
CIRCUIT BREAKER FAILURE
ELECTRIC PANEL INSPECTION
Blown fuse, tripped breaker Replace fuse or breaker - does the pump run and keep running normally? Be sure proper breaker or fuse size in ampacity is installed - ELECTRIC PANEL INSPECTION Low voltage to the motor Check with VOM at the pressure control switch or at the motor wiring Be sure the proper size of wire is used for the ampacity and length of circuit; Test for low voltage to the building. Loose, improper, or broken motor wire Check wiring against the motor installation manual diagram, check all connections for tightness, shorts, burns, damage Rewire or repair or replace wWhen a sealed compressor motor has "burned out" this means that the internal wiring of the motor has become irreparably damaged: the compressor motor windings may be burned and shorted together or shorted to the steel shell of the motor, or the windings may have burned and simply become "open" or disconnected. If the motor has burned out in either of these ways it needs to be replaced.

Oct 08, 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

I have a springdale travel trailer with a dometic ac system. When I turn the air on, with the fan in the auto position on the thermostst, the compressor turns on and runs, but the fan does not. The...


Neither.
The fan should run in the 'auto' position.
If it runs (on hi and lo settings) then I doubt if anything is wrong with the fan motor.
I would think your thermostat is bad and needs replacing.

Jun 05, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

Constanly blowing fuses in thermostat


u have a short some place jumping the fuse wreck the transformer controls good luck Tom

Jul 07, 2009 | Heating & Cooling

2 Answers

1998 Sonnybrook travel trailer


Did it just start to do this, or has it always been that way? Are you original owner? Did it work fine before? Make, model# of AC unit & thermostat would be of help too.

Aug 22, 2008 | Dometic Rooftop RV Air Conditioner

Not finding what you are looking for?
Dometic Rooftop RV Air Conditioner Logo

348 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Heating & Cooling Experts

Bill Long

Level 3 Expert

588 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Are you a Dometic Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...