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Thread: Dometic Thermorstat Doesn't Work
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05-05-2022, 06:18 PM #1
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Dometic Thermorstat Doesn't Work
I just bought a used 2018 Reflection 307MKS, and the thermostat does not work. It jumps all over the place and shuts off at random. I came across online posts about removing the cover. Any help would be appreciated.
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Easy E
Southeast Idaho
2018 Reflection 307MKS
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05-06-2022, 06:42 AM #2
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As I recall, there was a 'bad" batch of thermostats in that time frame. There were a number of folks reporting this on the forum back then. We had the GDRV Factory Service center add a second Dometic AC in our 303 in the spring of 2018 and it was sensitive as well.......jumping up and down, heat to AC, to Off, etc. as you shared. I called the service center and they sent a new thermomstat which I installed and it works fine.
DanDan & Carol
2014 303RLS Reflection #185 (10/2013 build)
2012 Silverado LTZ Crew Duramax 2500HD
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05-06-2022, 07:34 AM #3
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05-06-2022, 08:13 AM #4
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Contact Dometic. There is a free replacement cover that improves the situation. However if all else fails, just take the cover off - then things should work properly. I am thinking of replacing mine with something different so I get an interior temperature reading and not just the temp setting.
2018 Reflection 150 Series 220RK 5th wheel with 6K axle upgrade. B&W 25K OEM Companion, Steadyfast system, 2022 F350 SRW 6.7 King Ranch 8' bed, Trailer reverse lights, rear spare tire holder, storage tube, sumo springs, Victron MultiPlus 12/120/3000, and Solar
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05-06-2022, 11:09 AM #5
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Thanks, All. I pulled the cover, and it works fine. I will call Dometic for a new cover.
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