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Old 11-12-2012, 12:35 PM   #15
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Stoney Creek , Ontario
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After encountering identical E1 error codes on my Dometic Fridge (Model RM 3762), I contacted my RV dealer who recognized the issue right away. In my case the E1 error code would appear in both LP and AC modes. The fridge would in fact work normally for about 6 hours or until it reached the set operating temperature and shut off as normal. The problem was that it would not re-start and I would constantly have to manually shut it off and re-start it. This procedure had to be repeated over and over every time the fridge reached operating temp.
My dealer had stated that the issue was with the temperature probe or better known as the "Thermistor". To confirm this, he had me push the wire of the thermister through to the back of the fridge and leave it exposed to the outside air temperature. In doing so, the fridge worked normally but would not shut off as expected and would natually freeze everything over time. However, this confirmed that the E1 error code was an thermister (temp probe) issue. The thermister is located inside the fridge and is attached to the "fins" and the back wall of the fridge. It is wired to the electronic control panel in the back of the fridge. I have replaced the thermister (under warrenty) and have had no issues since. (the thermister I removed was subsequently tested at the dealer and confirmed to be faulty. Hope this helps everyone who I see has had this issue.
Ron
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Old 05-02-2013, 06:38 AM   #16
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Ron, what position on the fins of your fridge is the thermistor located. Have you measured the internal temperature to see how well it is performing? Have you had any issues with maintaining temperature while traveling on LP?

I've been having issues with my Parallax 7300 55 amp converter on my 2008 Classic 25fb and found it was not outputing enough voltage to the batteries. The batteries would drain faster than they could be charged. In diagnosing the issue on the last camping trip I disconnected the battery from the converter to see how the converter could supply DC to the trailer. I put the fridge on gas. A few hours later I notice the E1 code and the temperature had risen a few degrees. The Dometic manual stated hardware fault with the gas and I figured there was not enough power being generated from converter DC side to power the electronic ignition. Turned the fridge to Off, waited about a minute, turned it On and verified it was on AC. Code never reappeared. I'm getting Progressive Dynamic 7300 replacement kit from Bestconverters.

Kelvin
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Old 05-02-2013, 07:14 AM   #17
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I am wondering why Dometic went to electronic boards that are prone to failure? They also require 12V.

Perry
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Old 05-16-2013, 09:28 AM   #18
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Stoney Creek , Ontario
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Kelvin.....My thermistor is located on the far right fin. I have also slid it up to the top of the fin. I have not check the inside temp to see how it is performing. I also do not have issues with my batteries or convertor. My trailer is also parked on a site and does not get moved. I have also heard fro others regarding issues with the electronic board, however I don't believe that was my issue.

Ron
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Old 05-16-2013, 09:43 AM   #19
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2008 27' Safari FB SE
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Quote:
Originally Posted by rohoward View Post
Kelvin.....My thermistor is located on the far right fin. I have also slid it up to the top of the fin. I have not check the inside temp to see how it is performing. I also do not have issues with my batteries or convertor. My trailer is also parked on a site and does not get moved. I have also heard fro others regarding issues with the electronic board, however I don't believe that was my issue.

Ron
Ron,

Would you happen to have a picture of the thermistor in your Dometic RM3762. I have the same model and have nothing attached to the fins. I do have something attached to one of the shelves on the far right side. We bought our trailer used and maybe the PO moved the thermistor and it should be put back on the fin. I have checked the Dometic manual and website for this model but found no reference to the thermistor.

Thanks for your help.

Susan
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