RV Doctor

Dear Gary,
We are new full-timers and I’ve noticed our Norcold refrigerator fins inside the unit are icing up. What causes this or is this normal? Is there any way to prevent this? —Casey D.

Dear Casey,
The cause for severe icing on those fins could be a couple of things. Depending on the model Norcold, it may be a mispositioned thermistor, which is the device used to determine the cold setting on the thermostat. Or it could simply be a faulty door gasket leaking air.

The first thing to do is perform what we call the dollar bill test. Close the lower refrigerator door(s) onto a dollar bill at various points around the entire seal. With the door closed onto the bill, tug on it. You should feel a slight drag or resistance on the bill as you pull it out. If it just falls out or you feel no tug, chances are the gasket is faulty and needs replacing. Be sure to do this at multiple positions around the entire seal of each door.

If that test passes with flying colors, then check with Norcold about the exact positioning of the thermistor on those fins.

Also be sure you have plenty of room for air to move about inside the cabinet section. Avoid placing wide trays that may block some of the convection movement inside the box. This, too, could cause some icing on those secondary evaporator fins.

Norcold has had several product recalls. Click here for more information.

There was also a class action lawsuit which was settled in 2017. Get more info here.

Finally, here’s a video from Mac The Fire Guy, from 2015, about the Norcold refrigerator recalls and class action lawsuit.

The above information is mostly out of date, but may give you more insight into your Norcold refrigerator.

Read more from Gary Bunzer at the RVdoctor.com. See Gary’s videos about RV repair and maintenance.

##RVT903