Dometic cooling capacity has decreased

When was the last time the stack was cleaned?
When was the last time the burner was cleaned?

Old age...23 years of service + at least 5 years of no maintenance. Hmmmm

Never I would guess

Cleaning the burner and chimney is annual maintenance on an RV fridge. There is also a heat diffuser inside the chimney that should be checked. They tend to get the end burnt off of them over time. I would bet your LP pressure is low, though. You need a manometer to check it, either liquid or digital. If the LP pressure isn’t maintaining 11” of water column with the fridge running, you probably need a new LP regulator. As old as yours likely is, I wouldn’t even try to adjust it.

:):)

I would not even spend the time on testing a regulator. Just replace it!

Thanks but the LPG discussion doesn't explain why it is basically the same under AC power.

If you are not in the shade, that sounds pretty normal to me for the temps you have inside and out. The sun can make a huge difference. We found that our this past summer in NM - and if it's in a slide it's even worse.

Make sure the door gaskets are good. Even a little air leak will cause a loss of cooling.

Close a dollar bill in the door and see how easy it pulls out. Try this all over the gasket.

90 inside, ugh. No ac?

-6*F in freezer is great temp....but with temp setting on MAX COLD (5) food compartment temps should be cooler then 39*F
May have some blockage beginning to occur

Remove cover on lower circuit board in outside compartment
P2 connector....left side middle area ....2 WHITE Leads
Unplug the connector from circuit board......thermistor wires

Run fridge for at least 12 hrs on AC Element and recheck temps
W/O sensing from thermistor the fridge will run continuously
Temp in food compartment should get down to 32*F IF the food compartment High Temp Evap Coil is fully functioning


R717 is NOT used in absorption fridges ---used in straight concentrate form in compressor chiller units
RV Absorption is ammonia, sodium chromate, water & hydrogen gas (or helium in 2 no longer produced units) at 300 psi

Leak in cooling unit and NO ammonia/Hydrogen ....non-refillable