I went back today and discovered some ice on the fan, auger motor and upper part of evaporator. Someone has turned off the ice maker, so I don't know if the evaporator keeps cooling, or if there is a valve that cuts off coolant?
I have pics of what I found, attached.
1. I figured out that someone has changed the thermistat/limit because there are splices with heat shrink. I tested the limit and it was open, I don't know if this is normally open or normally closed when at room temp? I had steamed and blow dried the ice off, so thats why room temp.
2. The defrost heater tested good at around 180 Ohms of resistance.
3. I'm starting to think that there could be two sources of leaking, one at the drain seal area and one at the evaporator area above?
4. If I can figure out the ice build up issue, could I silicone the unit to the back wall to garantee that the gasket won't leak?
Oh, I forgot to ask, does the upper ice formation look like a sealed system leak? the rest of the evaporator was clear of frost when I got to it.