Okay I had this same unit and I replaced the AdC board as the defrost was building up on the coils very badly . after replacing the board the defrost system is working as it should , only one problem , now the ice in the ice Ben seems to be melting during defrost mode I am guessing due to an extended defrost mode what could cause this. Is this a possible software issue on the board itself. Or is this most likely related to a thermostat that's not terminating the defrost when it should?
Also does this refrigerator have the ability to still be in defrost mode without needing to run a neutral path through the thermostats?