SOLVED: Dometic Thermostat Needs To Be Reset Every Day Or - Fixya

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3313192.000 White Single Zone LCD Thermostat Heat/Cool/Fan
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william simpson

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Dometic Master 1,363 Answers
Posted on Aug 17, 2015

william simpson Dometic Master Level 3:

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Joined: Jan 17, 2012 Answers 1363 Questions 14 Helped 326106 Points 1636 Follow View Profile Re: Dometic thermostat needs to be reset every day or...

Something is locking out furnace should get a code.

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Don Berry

230 Answers
Posted on Jun 17, 2008

SOURCE: will not shut off

Sounds like a stuck relay on the unit itself. Maybe there is a short in the control wire that comes from the thermostat that activates the fan.The thermostat probably has one hot wire at all times. The thermostat then chooses which wire to send the voltage down based on your selection. One of those wires is probably for the fan only. Make sure that it is in good condition (no bare, pinched or wires)

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Anonymous

68 Answers
Posted on Mar 19, 2009

SOURCE: ATWOOD MOBILE FURNACE RUNS WHEN IT WANTS/

Check your furnace for power. will be 4 wires. power ground and 2 thermostat wires. Check for power at the time delay relay, if you have power there check for power going in the fan motor, if power in motor wire, motor is bad. If no power in motor wire and power going to circuit board take the 2 thermostat wire apart and wrap the 2 together comimg from the thermostat. Fan will stat in about 30 seconds. If it does you need a control kit in the ac. But sounds to me like you have a furnace problem.

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Mike Butler

6674 Answers
Posted on Jul 08, 2009

SOURCE: I have a DuoTherm BriskAIr 13.5K BTU. The Dometic

If you look at control box at roof unit, they usually use a separate set of wires for furnace. See what colors they are attached to at harness to thermostat. Some just follow other harness, and come out at thermostat. (bypass control box) Once you've determined which 2 they are, join them together & see if furnace starts, as it should. If it does, thermostat is faulty. If not, pull outside cover off & check voltages at furnace. I'm guessing by furnace model that your unit is approx 30 ft , but if it's a park model, you may have 24 volt system on furnace or 12 volt. Another way of confirming is to go to back of furnace where air intake grille is inside your unit, and locate 2 blue wires going to furnace & remove whatever wires are attached to them & connect them together. Furnace should start up.

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Anonymous

1 Answer
Posted on Aug 08, 2009

SOURCE: dometic a/c, duotherm thermostat, turns right back on after it reaches desired temperture.

I have a dometic 13500 BTU Roof mount a/c. It is set up with the duo-therm analog thermostat. The system cools fine. The problem is that the a/c gets down to the right temp, then it turns off like it should but turns right back on within a few seconds. Any help would be greatly appreciated.

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Fal Mueller

438 Answers
Posted on Jan 28, 2010

SOURCE: two air conditioners & two furnaces with one thermostat

use relays to combine the to and isolate from each other or observing polarity's, you should be able to parallel the connections from your thermostat

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