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Iceman31's avatar
Iceman31
Explorer
Apr 30, 2015

Dometic DM2852 Fridge Issues - Need some advice

I am having issues with my unit. I turned it on last night for my weekend out at the lake coming up. Went back out to the lake tonight to find the fridge and freezer very warm. Last year I replaced the thermistor with one of those snip the tip units and it seemed to work for awhile. I had unplugged the thermistor and it seemed to work OK for the remainder of last season. The thermistor was plugged in again when I turned it on last night. I have a new direct replacement thermistor which I could install but am not sure that is the problem. I am contemplating switching it to propane to see what kind of temps I will see. Could my electrical board be on it's way out? Looking for some advice as to what to look for here. When the fridge was quite warm you could hear a gurgling noise like the fluid inside the pipes was bubbling hot. Any advice? Is it worth changing my thermistor? Should I try it on propane? Should I just call a repairman?

5 Replies

  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    May 01, 2015
    If it's gurgling, it's shot. It will likely shut down due to over heating tripping the safety.
  • Iceman31's avatar
    Iceman31
    Explorer
    May 01, 2015
    Thank You for your response and sorry about the confusion. When I get out there tonight I will run it without the thermistor unplugged to see what happens and go from there.
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Apr 30, 2015
    Your posts are a bit confusing........

    You had a cooling issue last season. Replaced OEM thermistor with a Snip-the-tip and it worked for 'awhile'.....so guess it really didn't because you then stated

    " I had unplugged the thermistor and it seemed to work OK for the remainder of last season".........with thermistor unplugged fridge should have cooled continuously and food section should have froze....w/o thermistor plugged in noting to sense temps.

    Now you have plugged thermistor (with snip the tip sensor on OEM thermistor wires to lower board) and NO COOLING.
    AND you can hear 'gurgling' noises

    First off.......'gurgling' noises can be due to BLOCKAGE in cooling unit. NOT GOOD

    Second.......need to unplug that thermistor and operate fridge 24 hrs. (force cool operation) then check temps (glass with water and thermometer). If freezer temp and food section temp are OK then the thermistor needs replaced.

    IF freezer/food section temps are still warm........need a new lower board

    AND If freezer temp is OK but food section is still not cool...........cooling unit is blocked and needs replaced
  • Iceman31's avatar
    Iceman31
    Explorer
    Apr 30, 2015
    I have not installed the new thermistor yet - It is just the style that slides up and down on the fins.
  • Trackrig's avatar
    Trackrig
    Explorer II
    Apr 30, 2015
    The new thermistor I installed recently is adjustable and did need adjusting. Is yours adjustable?

    Bill

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