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Okay, let me answer the first question.
The evaporator fan runs constantly, as long as the unit is plugged in, that fan is on. Always on every Delfield I got.
The condenser fan and compressor are not starting, but if I tap the t-stat then it will start shortly after, stay cold for an hour or 2 and then go back up to 70-80*F.
When I first went to check it, the comp was cold and the condenser fan was not on, that was a sure sign to me that the cooling wasn’t being initiated by the t-stat.