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drillagent's avatar
drillagent
Explorer
Apr 09, 2019

Fridge cooling unit forming crystals-help!

BLUF - How do I keep fridge cooling unit from forming crystals?

We spend most of the year work camping. We spend five months in one location, then take a month of traveling to the next location. Our Norcold 1200 fridge has been having cooling problems. We had a technician look at it and was told the cooling unit was blocked with crystals and would eventually need to be replaced. The tech even went so far as to suggest banging on the canister to loosen the crystals.

We have started our move to the next locale and it seems the crystals have broken loose again. The fridge now works great. So good, I had to turn it down because it’s getting too cold.

So, once we get to our work location, how do I keep it from getting blocked again? Should I bang on the canister once a week, or just when it stops cooling again? Eventually, when funds become available, it will be replaced. But until then...
  • I think your saying the crystals are inside the cooling system not the evaporator ?
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Two answers
    1: you don't
    2: Fans. I have a pair of 12 volt "Comptuer" fans hooked to the light circuit (Before the switch so they are on all the time) one is a higher capacity and that end of the cooling fins is very clear of ice. the other end has some ice but the fan is not as "Fast".. They make a set of fans designed to attach to the TOP of the Fridge. along with an LED light in the assembly.. I don't have a link handy but plan on converting one day.
  • A properly-running refer doesn't need to be banged on. You may get by doing that for a while, but I'd start saving my money.

    And yes, the above is true.
  • My understanding as this can be caused by running out-of-level. But, I am not sure if this is true.

    Steve

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