frig cooling problem...with a Norcold 821
Please can someone explain me what "mechanically or chemically" goes wrong inside a Norcold 821 for the cooling becoming less efficient ones in a while, despite having good heat, good ventilation and ...
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If NOT leaking, then in that 15 years, all those times (short and long) that you parked un-level with the refer ON, it caused a microscopic blockage on the upper tube area. This is a accumulative process, over the years those small blockage's build up and then one day you do not get the cooling you expect. This type blockage is permanent, you cannot Burp or rotate the refer to fix the problem. The blockage is as hard as a weld and cannot be removed. Years ago when they used to rebuild old units, they cut out the blocked tubing and welded new tubing in place since the blockage could not be removed. Doug
