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Old 10-02-2021, 04:37 PM   #1
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Dometic air and thermostat

As I was running my air in my Surveyor Cadet 265 RLDS travel trailer it suddenly turned off. The setting was low fan so it should keep running even when the compressor shuts down. No matter where I set the thermostat the air would not come back on. So I ran the thermostat through heat, air and all and the air started back up only to run perfectly for a while but shut down again. I am thinking the thermostat is the problem. The 15000 BTU air was working great. Has anyone else run into this problem??
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Old 10-02-2021, 04:50 PM   #2
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Please post a pic of your thermostat.
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Old 10-03-2021, 11:30 AM   #3
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I took a pic but not sure how to post it in a reply to you. I uploaded it to my photo gallery but do not know how to post it in a reply.
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Old 10-03-2021, 11:34 AM   #4
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Quote:
Originally Posted by Ham Camper View Post
I took a pic but not sure how to post it in a reply to you. I uploaded it to my photo gallery but do not know how to post it in a reply.
Read post #7 in this thread.

https://www.forestriverforums.com/fo...sics-6778.html

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2018 2902WS Rockwood Ultra Lite (with tons of Mods)
2017 Ford F250 Lariat, 6.2 gas (2022 F250 Lariat 7.3 gas with 10 speed Xmsn on order)
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Old 10-03-2021, 11:44 AM   #5
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pic of thermostat
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Old 10-03-2021, 11:45 AM   #6
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I guess I figured it out
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Old 10-03-2021, 12:52 PM   #7
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I had a similar problem this Spring. The air conditioning worked fine, when it reached the set temp it turned off as it should have. When the camper warmed up it would not turn back on without my turning off at the thermostat and turning back on the AC. I cleaned the unit and checked the parts of the roof unit all were fine. Then I checked the wiring of the control unit (box) in the ceiling above the air filter, disconnected and reconnected the wires. The signal wire from the thermostat may have been lose, since plugging back in the wires in the control box we have not had a problem with AC coming on as it should. Good Luck, hope this helps someone else.
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Old 10-03-2021, 01:56 PM   #8
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Easier way

Quote:
Originally Posted by cboss View Post
There's an easier way to post pictures.
  1. Put picture on your computer. Remember the folder (e.g., Desktop or Documents or Downloads).
  2. Start the post.
  3. Click the paperclip icon at the top of the posting editor. It's next to the smiley. A popup will occur.
  4. In the popup navigate to the folder and select the picture.
  5. Repeat the above step up to four more times.
  6. Click Upload
  7. Click Close Window
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Old 10-03-2021, 04:43 PM   #9
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Maybe the AC is freezing up because you are running the fan on low speed....this use to happen to us in our previous 5th wheel. We learned our lesson to never run the AC with the fan on low.
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Old 10-03-2021, 05:32 PM   #10
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It did it with the fan setting on high. I tried that too
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Old 10-03-2021, 05:33 PM   #11
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I will try that
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Old 10-03-2021, 07:56 PM   #12
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Quote:
Originally Posted by Splashes3 View Post
Maybe the AC is freezing up because you are running the fan on low speed....this use to happen to us in our previous 5th wheel. We learned our lesson to never run the AC with the fan on low.

Seems like we used to have that thermostat. Though the operation or best advice was run only in auto.
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Old 10-04-2021, 11:04 AM   #13
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Your advice is right on with the posting of pictures. Thanks a lot. With covid we have not been camping much so have not been on the FR Forum much and my memory about how to do things comes and goes.
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Old 10-04-2021, 11:35 AM   #14
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Quote

Quote:
Originally Posted by Ham Camper View Post
Your advice is right on with the posting of pictures. Thanks a lot. With covid we have not been camping much so have not been on the FR Forum much and my memory about how to do things comes and goes.
Ham, when you respond to a post here, click the "Quote" button at the bottom of that specific post. That puts the message you are responding to in a box above your response just like this message.

Posting as you've been doing makes it hard to tell who you are responding to.
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Old 10-04-2021, 01:38 PM   #15
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I am trying to navigate the best I know how and it ios not easy from what I can see
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Old 10-04-2021, 05:33 PM   #16
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Quote:
Originally Posted by Larry-NC View Post
Ham, when you respond to a post here, click the "Quote" button at the bottom of that specific post. That puts the message you are responding to in a box above your response just like this message.

Posting as you've been doing makes it hard to tell who you are responding to.
I wondered what the quote thing was all about.
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Old 10-04-2021, 06:04 PM   #17
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Quote:
Originally Posted by Ham Camper View Post
I wondered what the quote thing was all about.
You'll be a MOD some day!
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2018 2902WS Rockwood Ultra Lite (with tons of Mods)
2017 Ford F250 Lariat, 6.2 gas (2022 F250 Lariat 7.3 gas with 10 speed Xmsn on order)
Equalizer Hitch w/ 4-Point Sway Control

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Old 10-04-2021, 08:27 PM   #18
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To the OP, you mentioned the fan continued to run with the fan set to low speed even when the compressor would turn off, that I would expect, does the fan shut off when it's set to auto? Also as I would expect, similar to a house HVAC...

My A/C fan does not shut off on any fan setting, auto or otherwise...

My heater does shut off when temp is reached, not the A/C

Thanks, Rick
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Old 10-05-2021, 06:40 AM   #19
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Quote:
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You'll be a MOD some day!
LOL I doubt that
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Old 10-06-2021, 09:02 AM   #20
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Quote:
Originally Posted by Toy4Rick View Post
To the OP, you mentioned the fan continued to run with the fan set to low speed even when the compressor would turn off, that I would expect, does the fan shut off when it's set to auto? Also as I would expect, similar to a house HVAC...

My A/C fan does not shut off on any fan setting, auto or otherwise...

My heater does shut off when temp is reached, not the A/C

Thanks, Rick
Thoughts on if the AC fan should turn off when temp is reached when in Auto mode?
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