When I bought our trailer, the refer was setting in the PO's garage. He said it didn't work. I took it with me, since he had no use for it. I replaced the burnt out electric heating element and installed a new thermocouple on the gas side. Total cost; less than $100.00. It's been in service for over
2 1/2 years. As long as the ammonia doesn't leak out. And I can get parts, I think it will serve me well.
And yes, the refer must be level. The older units were more sensitive to this than the newer ones.
Knowledge: "A gift to be shared. A treasure to receive."