Question about Dometic Rooftop RV Air Conditioner

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Intermitten furnace operation with a roof air and furnace combo. it acts like its not getting propane

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  • Kenneth Holcomb
    Kenneth Holcomb May 11, 2010

    Make sure you got a good bottle of propane, is your propane stove working? check your propane regulator

  • Danny Clark
    Danny Clark May 11, 2010

    Describe to me exactly what it is doing in what sequence please.

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I had same problem. pressure regulator on furnace needed adjustment.

Posted on Jan 06, 2009

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Posted on Jan 02, 2017

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Does it need propane to run the furnace or can it operate on electric alone. i have no owners manuel


Got here late...I am assuming this is for an RV. There are probably electric furnaces on some of the newer ones, however, an electric furnace would draw more power than most parks could handle, so the is answer is it probably needs to have propane. On your panel, or near your furnace, you will see a switch to tell the furnace to use propane or electric...if your furnace is capable of running on electricity.

Sep 30, 2015 | Cars & Trucks

1 Answer

I have a coleman modulating furnace it is propane The buners seem to be corroding


There are 2 types of burners. Atmospheric (or ribbon) type & inshot. I would imagine yours are Atmospheric...the longer type burners that protrude into the heat exchanger if they are corroding. Which also means you have an older furnace. Condensation can occur if there is not enough removal of flue gas...or... water is getting down into the burner from the flue. Have someone check the draft pressure to see if it has a proper draw when running. Coleman Evcon also made a furnace that is called a blendaire system. This system has a lower control board @ the furnace & and upper control board in a fan on the roof. The purpose of the fan was to blend air into the return from outside via roof fan to introduce fresh air in a tightly enveloped manufactured home, along with pressurizing the attic space to help keep the attic dry. If you have this type of system, your motor may be not working on the roof. Good luck!

Dec 02, 2014 | Heating & Cooling

1 Answer

6 year old colman furnace codes 1 blink ignition failure. Turn heater off at thermostat it cycles and heatsd house restarts a few times. alot of clicking noises and codes again a few cycles later. works...


I had the exact same issue and replaced the control circuit board, igniter, flame sensor, and thermostat just to discover the real problem was a rusted out Roof Jack. (The exhaust pipe that goes through the roof. The inner fresh air pipe was rotted out so the furnace was sucking exhaust gases in which would not support combustion. Have your's checked.

Oct 24, 2013 | Coleman Propane Forced Air Heater...

1 Answer

Battery drain in a few hours


The rooftop RV Air C0nditioner does not use the battery at all to power anything, there is a transformer in the coach that reduces the 120 volts to 12 volts to the thermostat for safety, but that is never ran by the battery if without high voltage supplying the
12 v control voltage, in fact you can remove the battery and it will have zero effect upon the roof top unit.
The propane furnace with it's 12 volt blower motor will run off the battery alone but not for long, you will need 6 x 6 volt golf cart batteries to use 12 volt power very long, no single 12 volt deep cycle battery has sufficient capacity to single handedly operate much for long.

Sep 16, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

Does gas furnace need exterior air or interior air


Follow what the the makes say in there manual

Feb 02, 2013 | Goodman Heating & Cooling

2 Answers

Coleman furnace runs a lot


You did not indicate the year or size of the mobile home, but, having lived in several in cold Michigan, here are some things.
Be sure all the windows are well sealed.
At first, I used to put a strong clear plastic sheet over the insides, and tape these in place.
Later, I bought foam insulation board at a lumber yard and cut pieces to fin the window openings, and taped them in.
When it is really cold, feel the walls, the floor, and the ceiling.
If you find cold to the touch, you are losing heat there.
If your floors are cold, put insulating panels and skirting around the bottom of the trailer.
If your extreme cold lasts for months, some people consider putting a small electric heater under the trailer that is temperature controlled.
Some people do a "roof-over" by setting poles or posts alongside the trailer and adding an additional roof above the trailer.
That step would enable you to add insulation above the top if your ceiling is cold.
God bless your efforts.

Oct 27, 2017 | Coleman Propane Forced Air Heater...

2 Answers

I have a Miller furnace with central air. I am looking to change to a propane gas heater. Looking for cost of Coleman furnace, or can a miller oil furnace be changed to a gas furnace?


Yes it can do but you will be better off by gone to a gas heater. MY own furnace was chance over to propane and didn't workout to good. Less then ayear i have put in a new heater. Ken's Repair

Jan 18, 2011 | Coleman Propane Forced Air Heater...

1 Answer

I have a suburban lp furnace and duotherm air/heat pump roof unit. duothern thermostat. 20 amp breaker kicked ( reset breaker) & furnace quit. NOW furnace fan comes on but does not light, and the front...


I'm not sure what the problem may be but you could try calling All Seasons RV Appliance Parts & Service. There number is 1-800-344-0673 they have helped me in the past. That and there tech calls are free so it wouldn't hurt to give them a call.

Jan 23, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

The flame starts to fluter after 5 to 10 minuets and it trips the


i'm guesing this is in a mobile home.this furnace is hard to see the baffles.you really can't check baffles unless you get on the roof and pull cap and look down with flash light but that still doesnt tell much. have you checked to see if you have combustion air coming in to that room. if this is in a mobile home should be a flex pipe in ceiling or some times it comes from underneath make sure you have air from out side coming through. If this is a mobile home if you have alot of snow on roof this will cause the same problem you are having. i would check the flue and intake air first before i took furnace apart. Gas valve doesn't usually cause this problem. the repair guy is probally right but i would check the two thing i told you about first.

Dec 26, 2008 | Coleman Propane Forced Air Heater...

1 Answer

Furnace problem


The problem is most likely in the control module of the roof air unit. Dometic uses the thermostat to activate and deactivate a relay in the control board of the roof ac unit whiich is just visible when you remove your air intake screen. The two blue with white stripe wires are the furnace control wires.

The furnace turns on and off by the opening and closing of relay. Most likely, the furnace control relay is stuck in the on position. On the thermostate, remove the fur wire and see if the furnace quits afrer it cycles down...it does not quit right away. With the termostat out of the loop, if the furnace does not shut down, the problem is in the control box. They are not hard to replace but you must be careful with the live wiire from the 110 ciucuit breaker. If you are not comfortable with the repair, take it to a dealer. The part number is on the assembly box. They need to know if you have the heat srip option or whatever othert options our Roof AC has. If the furnace still runs with the blue/white wires disconnected, the furnace wires are shorted somewhere between the furnace and the AC control unit.

Aug 21, 2007 | Dometic Rooftop RV Air Conditioner

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