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Old 11-28-2012, 11:56 AM   #1
cjl
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heater and AC running at the same time!

Took our 2013 Surveyor sp 10 year anniv. trailer out for the Thanksgiving week. All went well till it got cold and we turned on the furnace. The themostat has a button you push from fan, to AC, to furnace. Put it on furnace and it came on nice and warm but so did the AC nice and cool. Luckily our friends had a elec. oil heater we ended up using it. Any ideas?? I hate to take it to a dealer for repairs.
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Old 11-28-2012, 12:03 PM   #2
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Took our 2013 Surveyor sp 10 year anniv. trailer out for the Thanksgiving week. All went well till it got cold and we turned on the furnace. The themostat has a button you push from fan, to AC, to furnace. Put it on furnace and it came on nice and warm but so did the AC nice and cool. Luckily our friends had a elec. oil heater we ended up using it. Any ideas?? I hate to take it to a dealer for repairs.
I might beable to help you out, what t-stat do you have in your TT? Also you should have AC air registers in the ceiling and floor registers for the heater, is that correct? need this info to try and help you out...Thanks
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Old 11-28-2012, 12:06 PM   #3
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Yes on vent locations. I'll have to drive over to storage to figure out the type of thermostat. maybe I can find one on line and figure the brand.
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Old 11-28-2012, 12:18 PM   #4
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It's a Dometic themostat. I just ran across an old post where someone had the same problem. Evidently, I've never learned how to use the thing , all I did before was turn the AC on. Now I know when on "fan" you can changeit to high low or auto. Always wondered why it never cycled off LOL!!!! So if I'm reading the post right I just need to put it on "auto" then hopefully it won't turn the fan on.
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Old 11-28-2012, 02:18 PM   #5
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cjl.
If your heater is separate from your AC unit,meaning the heatewr blows through floor vents, you might look at this. Mine did the same thing and I had the fan position in high and/or low and not in the auto mode.With the AC on it kept running, it was here in Texas. When I went ot auto, the furnace worked without the fan on the AC working.Check to see if this will help.
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Old 11-28-2012, 02:23 PM   #6
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I think you're right. Guess I'll find out for sure next time we take it out.
thanks for your help.
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Old 11-28-2012, 02:36 PM   #7
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cjl

Yes use the auto position. For some reason the Dometic T stat works like that. Mine does as well.
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Old 11-28-2012, 06:44 PM   #8
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It's a Dometic themostat. I just ran across an old post where someone had the same problem. Evidently, I've never learned how to use the thing , all I did before was turn the AC on. Now I know when on "fan" you can changeit to high low or auto. Always wondered why it never cycled off LOL!!!! So if I'm reading the post right I just need to put it on "auto" then hopefully it won't turn the fan on.
Same thing happened to me, but I found out what the problem was from my dealer. Felt kinda stupid! You get a 45 min walk-through when you take delivery of the unit which there is no way to learn all you need to know. Papers don't help much. For us newbies it is trial and error and forums like this.
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Old 11-28-2012, 07:30 PM   #9
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Our unit List HI/LO/AUX...needs to be on aux to prevent AC fan from operating as others stated.



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