I have a defrost question, i purchased a used truck box with this unit intact ( V500 20 ) i am using it as a stand alone freezer. Unit works great on electric power, however for some reason it wont go into auto defrost. I can however initiate a manual defrost. Setpoint is 20F, the evap does freeze up at least once per day. Does anyone have any ideas as to what the problem may be.
Thermo King V500 20 defrost issue
Discussion in 'Refrigerated Trucking Forum' started by tkfreezer, Dec 8, 2017.