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Most Frequently Asked Questions About Operating Systems Here you will find some of the most frequently asked questions about the operating systems on a 'Bird. If you have one that you think should be added place it in here.

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  #1  
Old 09-23-2018
Ilulissat Ilulissat is offline
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Default Refrigerator Coolling during LPG usage

I have a Dometic Refrigerator that was installed new in 2014 by a P.O. I am also new to owning and motor coach. My question is, the refrigerator works pretty well and cools nicely when plugged into shore power. However, upon disconnecting from shore power and the refrigerator automatically switching from AC mode to Gas mode the refrigerator losing significant cooling efficiency. It is not performing well at all and we are concerned about items spoiling in the refrigerator while traveling in the coach.

The odd thing is, the freezer works pretty well and maintains freezing temperatures, ice etc while in transit.

The LPG tank is full. I do not know when the last time the system was serviced. I purchased the coach in January 2018 and have not had it serviced since then. Are there some common things that need to be done to keep the refrigerator working at its peak during LPG operations?

Thank You,
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Kevin & Christine Coons
Chattanooga, TN
Two Bird Club and Happy About It
1986 Wanderlodge PT 40 “Earl”
1979 FC31 “Ernest”
Looking for a 3rd Bird - a PT35 or PT36
2018 Jeep Wrangler Toad
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  #2  
Old 09-23-2018
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curtsprenger curtsprenger is offline
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Quote:
Originally Posted by Ilulissat View Post
I have a Dometic Refrigerator that was installed new in 2014 by a P.O. I am also new to owning and motor coach. My question is, the refrigerator works pretty well and cools nicely when plugged into shore power. However, upon disconnecting from shore power and the refrigerator automatically switching from AC mode to Gas mode the refrigerator losing significant cooling efficiency. It is not performing well at all and we are concerned about items spoiling in the refrigerator while traveling in the coach.

The odd thing is, the freezer works pretty well and maintains freezing temperatures, ice etc while in transit.

The LPG tank is full. I do not know when the last time the system was serviced. I purchased the coach in January 2018 and have not had it serviced since then. Are there some common things that need to be done to keep the refrigerator working at its peak during LPG operations?

Thank You,
What you explained is what took place with our very old 3801 Dometic. It turned out to be the refrigerator Regulator. Turn your regulator to max and if that does not resolve the box cooling it's probable the Regulator.
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2000 LX40 Millennium Limited Edition #4 of 6
1987 PT38 8V92 "MacAttack Racing" SOLD
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  #3  
Old 09-23-2018
dennis hight dennis hight is offline
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Check the burner if the flame is yellow it could be rust in the burner that falls down from the flu if so remove the burner and blow it out. Or it could be something in the orfice hope this helps.
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  #4  
Old 09-23-2018
DW SD DW SD is offline
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My dual fuel refrigerators have cooled better and cooled down quicker on propane than electric.

Simce yours is pretty new id expect similar.
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  #5  
Old 09-23-2018
LeRoy LeRoy is offline
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Ours was also not getting cold in the frig, but would in the freezer. There was a temp probe in the fridge side that we moved to the top. (It was laying in the bottom). We also added a small circulating fan in the fridge. It runs about 30 degrees in the fridge now. I also cleaned a hunk of rust out of the flue pipe also.
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  #6  
Old 09-23-2018
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max hendrix max hendrix is offline
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I had an issue once after driving to a campsite. The rust and scale fell down the flue and blocked the hot airflow up the flue. Turn off and let everything cool and then blow the flue out.
I took a piece of rubber tubing / fuel line and bent it up into the flue. Blow compressed air up through the flue. Don’t look up when you do this because all kinds of scale etc will come falling back down. Put it all back together and make sure the flame looks good, not yellow. Hope that helps
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  #7  
Old 09-24-2018
mpierce mpierce is offline
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Propane should cool better than when on electric.
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  #8  
Old 09-24-2018
oldmansax oldmansax is offline
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Kevin, download a copy of the operators and service manual for your refrigerator from Dometic and follow their instructions for servicing. Try to see if the unit is installed according to specs. The distance between the back wall and the cooling fins is critical. It can be checked for rough measurements with a mirror and a flashlight. As has been pointed out elsewhere, improper installation and maintenance can cause a fire.

TOM
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  #9  
Old 09-26-2018
Sandytoes Sandytoes is offline
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We had similar problems this last summer when it was very hot. So I have a couple of comments regarding solutions. I added in the back of the fridge in the access compartment a cheap AC fan and a DC computer fan, which I wired in with a push button on/off switch. That forces extra air up passed the external cooling fins on the rear of the fridge. Sometimes normal convection is not enough, especially when the ambient outside temp is high. Also, someone else posted about adding a fan inside to circulate air. That also works, because packing too much food around the inside fins will reduce the air flow and inhibit the cooling effect. Also, adding lots of warm food will increase the temp inside and it takes a while to cool down again. All my experience was solved due to others commenting.
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  #10  
Old 09-26-2018
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curtsprenger curtsprenger is offline
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Quote:
Originally Posted by Sandytoes View Post
We had similar problems this last summer when it was very hot. So I have a couple of comments regarding solutions. I added in the back of the fridge in the access compartment a cheap AC fan and a DC computer fan, which I wired in with a push button on/off switch. That forces extra air up passed the external cooling fins on the rear of the fridge. Sometimes normal convection is not enough, especially when the ambient outside temp is high. Also, someone else posted about adding a fan inside to circulate air. That also works, because packing too much food around the inside fins will reduce the air flow and inhibit the cooling effect. Also, adding lots of warm food will increase the temp inside and it takes a while to cool down again. All my experience was solved due to others commenting.
The photos are of the dual fan unit that I made and mounted to the inside top of the frig. box. Before this I tried a couple of the retail fans that are on the market. They failed to do the job. I also installed three fans at the top (roof) vent, and they are controlled by snap discs and switches. The frig. gets down to the low 30s and lower. Our frig is the original Dometic 3801.
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2000 LX40 Millennium Limited Edition #4 of 6
1987 PT38 8V92 "MacAttack Racing" SOLD
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Anaheim Hills, Calif.
714 269-6187

Do Not Send PM (Private Messages) Please
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