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One last question, if the control board is actualy trying to do a defrost but the relay is no good, doesnt the control board give a set amount of time for a response from the terminator to signify a succesfull defrost before activating the compressor again? i would assume the period that the board is trying to do a defrost would result in a temperature spike, albeit a smaller one than a defrost causes. i am seeing no period of inactivity by the compressor as the PCB attempts to defrost as indicated by my temperature recorder.
Or is it possible that the PCB is detecting an abnormality in the defrost circuit and skipping defrost completely?