Forum Discussion

derh20's avatar
derh20
Explorer
Jan 30, 2017

Ice forming on fridge "fins"

I know I have read about this in the past, but could not find anything when searching for it.

I am getting ice forming on the fins in the refrigerator. What is causing this and how do I fix it. Your help would be appreciated.

17 Replies

  • j-d's avatar
    j-d
    Explorer II
    I try to keep my crew from "shopping," spending lots of time with the door open.

    We have a Norcold, and if there's good news about Norcold... It has a "defrost" every couple dozen hours. It isn't a forced defrost like a home fridge. Rather, it stops the cooling unit for half an hour or so, and the frost/ice usually melts in that time.

    One of the many not-so-good things about Norcold... Our fridge door is so flimsy that the door gasket doesn't seal at the corner below the latch. We now have the Norcold Knee Knock and High Five. Nudge the bottom of the Fridge door and the top of the Freezer door every time we close them. Its now second nature and really helps with cooling and frost. Along with No Shopping...

    Dometic doesn't have the defrost cycle. Luckily, Dometic DOES seem to have stiffer doors...

    I keep a squeeze bottle with a Stream setting on board. On long summer trips I keep a air-pressured garden sprayer. If the fins get heavily frosted. I fill the sprayer with hot water, open the door and blast away at the ice with the fine jet of hot water. Ice is all gone in less than a minute of Shopping.
  • derh20 wrote:

    I am getting ice forming on the fins in the refrigerator. What is causing this and how do I fix it. Your help would be appreciated.


    You don't need to "fix" it because nothing is broken.
    Mine does that too.
    As long as liquids put in the fridge section don't freeze, there is NOT a problem.
    If you want more assurance, get a thermometer and put it in the fridge section away from the fins.
  • I found that pre-cooling my items,especially canned or bottled, before I load the RV helps. Install a thermometer and monitor the temperature ,adjust thermostat accordingly.
  • Open the fridge less. Also vent the RV or possibly run the A/C to de-hemudify.
  • We always had a small amount of ice buildup on the fins in our fridge. Never a large accumulation. It would either evaporate or melt off on it's own. Nine years later, still not a problem. ;)
  • I fixed mine by turning the thermostat setting up one notch warmer.
    Refer still nice and cold.
  • Possible causes are 1. Thermostat setting too high (coldest) 2. Thermostat not working 3. Opening the refrigerator door too often or keeping it open too long.
    If lowering the thermostat and keeping the door closed does not improve the problem then the thermostat may be the problem or the refrigerator is not automatically defrosting as I think they do (although I am not too sure that they all do).