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Old 08-05-2015, 11:55 AM   #1
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Join Date: Aug 2015
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Question A/C doesn't shut off

We have been full time in our 2007 MS RS3 for 3 years and my husband has become quick handy at finding and fixing problems. However, now our A/c is running almost continually, it lowers the temp to 73 until we turn it off, though it is set on 77. My husband has ordered a new thermostat and we are hoping that will solve the problem. We tried resetting it, but the results are the same. I was wondering where the sensor is that tell the thermostat when to turn off, does anyone know? Could it need to be replaced?
Any thought would be appreciated.

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Old 08-05-2015, 09:07 PM   #2
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Sensor for LR AC is at rear of trailer above the cabinets on the passenger side. For the BR AC, at the top front of the vanity area. Both are white, base is about the size of a silver dollar, has grille-like openings on it. At least on my '05 TK3.
Hope this helps.
And, welcome to the forum!!

2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired
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Old 08-12-2015, 07:12 AM   #3
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A/C won't shut off

Thanks for the help. We bought a new thermostat and it was a breeze to install it just plug and play and now all is good. Thanks again.
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