Refrigerator will not switch over to LP from AC

[nuntoogood@yahoo.com]

We have a Dometic side by side and the check light comes on when we try to use LP-gas instead of AC power. It's clean, no accumulated dust on the wires or coils outside, and the LP is turned on. Any idea what we are doing wrong?

[wolfe10]

Welcome to the FMCA Forum.

When you say the wires and coils are clean, that really doesn't address the LP flame area.

In your Dometic book is a description of the "burner area tune-up". No parts and no special tools are needed. This is done through the refrigerator outside access door.

Things that will be addressed in the tune-up that cause your symptoms are:

1. Improper igniter gap.

2. Dirt or rust in the burner tube that reduces the flame to where the thermocouple is not triggered.

3. Soot or dirt on thermocouple/igniter.

After the tune-up, stay by the outside refrigerator access door and see how far the sequence goes when someone else puts the refrigerator on "gas":

1. You hear the igniter click. If so, how many times.

2. You hear/feel the gas valve open (same time).

3. You see a flame (blue) from the burner tube.

4. The flame turns the igniter/thermocouple red hot.

And, while you are there, it is always a good idea to check the 12 VDC wires to the back of the refrigerator to make sure they are clean and tight.

Brett