Dometic Refrigerator

[CarlGeo]

My 1992 Dometic refrigerator with AES operates without problems on 12V or 120V, but has problems on LP gas.
It will light without a problem, but will only run for a short period of time, about 15 minutes, until it stops. I can reset and start it again, but it will only repeat the same pattern.
A few days ago it would operate on gas for 6 to 10 hours before it would stop, but the operating time continued to decrease until it will only operate a few minutes before it stops.
Where should I start looking?

[TomW]

Clogged burner.

Tom

[vswingfield]

Originally Posted by TomW

Clogged burner.

Tom

Ditto for my 67 Trade Wind. Except that I paid a tech in Ft. Lauderdale for this knowledge.

Vaughan

[amyanddavid]

how do you fix it then?

[wasagachris]

Check to make sure the thermocouple is being reched by the flame and is clean from soot. If it lights then burner should be good but it is notsensing flame and shutting down. Tighten the fitting of the thermocouple to the gas valve. If this does not fix problem replace thermocouple. It is not an expensive part $10 maybe. Any Rv outlet will have one.

[Chuckles]

Check, Clean and adjust as required, the ignitor and the flame sensor rod as well as the burner jet - do not push anything into the jet orifice but blow only. It may be worthwhile if your buying parts to replace the jet.

Also check the Gas regulator on the tank. Have a pressure test, with all burners on the cooker, heater furnace etc on at the same time.. It is known that the regulator gets water or dirt build up restricting the ability to regulate and allow a good gas flow

Hope this helps

[Splitrock]

I just changed the OEM gas lines from the first connection back and replaced and installed new shut off valves. I got a thimble full of black ash looking stuff out of the old line. I was impressed with the amount. It would have been plenty to mess up an orifice or probably a gas valve or two as well.

Sidebar: My new lines have held 22 pounds of air pressure for almost 2 weeks now without losing any and gaining a half pound on a warm day.

My next project, after I get the front inside panels reinstalled, is to remove and repair or replace all 4 gas fixtures. If they're a dirty as the gas lines, I expect to improve two and replace two. I'm thinking I'd better have a budget to replace all 4.

[wasagachris]

Splitrock New propane code prohibits shut off valves inside the trailer. Too many people removed or disconnected appliances and relied on these shut offs to work. Often they will leak by slightly and inside can lead to disasterous results. BIG BOOM REALLY BIG BOOM. LOL. Keep your shut offs uned the belly and you will be fine.

[Splitrock]

All 4 of my gas shut offs are outside under the coach. Good point. Thanks!