FINALLY FIXED Refrig switched to LP - *****Another update

Bill/Diana wrote:
The heck with it....as long as it runs on LP I'm going to Disney and can work on the problem later today when we return.

Well my first thought is... Quoted above (Well adjusted for 3rd person instead of 1st person). Excellent idea

Two possibilities or 3,

Since you have confirmed 120vac to outlet, (Suggestion confirm under load, install a "Cube Tap" type device and measure one of the added outlets while the fridge draws power)

If power lost in above test (you may need to look fast). you have a bad connection between Outlet and breaker... Check screws on breaker and bus bars in power distribution panel first.

Next: IF power is good at outlet,, check connections on connections board, check all fuses (remove and reseat) and finally control board may be toast.

Also any plugs, like Molex connectors,, Unplug and re-connect.

IF control board, Check with Dinosaur boards for a replacement, very high quality and generally lower prices.

OK....I just went outside and removed the refrig cover. The next step was to removed the AC plug and using the volt meter verified AC voltage at the electrical outlet. Got a reading of 121 volts. Plugged AC in again and refrig once again decided to choose LP as the source even though the switch was set to AUTO. In the Auto mode the refrig should run on ELEC when AC is available.

I unplugged & plugged in the AC again and this time the refrig selected ELEC. So I though.....hmmm......must have been some fluke. I do not like it when a problem goes away so easily for no reason.

We had plans to go to Downtown Disney which we cancelled when we discovered this problem this morning.Then when the refrig seemed to be OK again we decided to once again go ahead with our plans for Disney.

But....after the refrig ran on ELEC for about 5 minutes it switched to LP again. The heck with it....as long as it runs on LP I'm going to Disney and can work on the problem later today when we return. I'm think the problem is the electric heat element has gone bad. When I get back from Disney I'll remove the element and test the resistance.

Any other advice or thoughts??

Thanks guys for such a rapid reply.

I just noticed this problem and the sun is just coming up so I have not had the opportunity to run and tests just yet. I'll being going outside with the volt meter as soon as I finish my corn flakes & strawberries. LOL

I replaced the circuit board in 2011 with a Dinosaur UIB S.

The refrig is cooling just fine on LP right now. So in my mind the problem can be as simple as the AC eclectic has been disrupted. I think another problem might be the electric element may have gone bad and the board sensed the failure and switched to LP. Or perhaps the board has gone bad.

Please keep the suggestions coming and I'll begin the troubleshooting soon and will keep everyone posted.

Thanks again.

It should only do that if it detected a loss in 120v, ac, power. It could be a bad connection on the 120v circuit, or a short loss in shore-power not noticed by you.

Did you turn it off and push the "auto" button again? There is always the possibility that one of you accidently bumped the button.

At that age the control board may be going bad, or the heating element failed or a bad connection in it's circuit.

If it is set on auto, it apparently lost 110 to it. Check the breaker and the plug in the outlet behind it.