Originally Posted by KenS999
1) #n306rm8 refrigerator. I use two computer fans to draw air across the coils for more efficient cooling and have a circulation fan inside the refrigerator box.
2) Lately cooling efficiency has been greatly reduced when running in LP mode. The flame meter normally in the middle of the green zone is now way back on the border of the white and green.
3) It is necessary to turn the LP temperature dial to high in order to maintain 38F° in the refrigerator compartment.
4) Every few days I get a large carbon deposit on the thermocouple that sits in the burner flame. Any help on how to correct this issue would be greatly appreciated. Thanks, Ken
1) The computer fans are not optimum, squirrel cage fans (blowers) generally draw less amperage and are quieter. They are better suited for this application because they produce pressure, the computer fans produce very little pressure and will stall with any back pressure such as wind.
2) This all adds up to the fact that your burner is not producing enough heat (more on this), and as counterintuitive as it sounds, the boiler in the cooling unit will over heat due to a lack of ammonia. You should discontinue use until you find the problem, that is unless you have boiler protection on the fridge.
3) By adjusting the temperature, you are just causing the fridge to run longer. Your boiler is not producing enough refrigerant, sooner or later the cycle will stop and the boiler will overheat.
4) This is a good clue, thanks for the input
There are a number of things to check, I will list them, not in order, always try the simplest thing first:
a) Did you just fill your propane bottles? Butane has less BTUs than propane, in addition it will soot like you described. Get a refill from another source and see if the issue goes away?
b) Check the propane pressure, if should 11 inches water column (+/-1/2"). Load test, when burners on stove on should maintain the pressure.
c) The propane filter could be plugged, we have instructions on our website on how to clean.
Let us know if this helps?