about a week age I went out on this unit. It was not cooling. There was a major ice wall in the back of the freezer. I defrosted the ice, the ice cover the evaporator fan. The defrost heater tested good. The customers call today saying that the same problem is back. any help would be helpful. Thanks Ricky P.S. also when the freezer door opened the water to the ice maker would dispense water, over flowing the ice maker. how do I get unit into diagnostic?
Defrosted the unit once.
- Apache Warrior asked 7 years ago
Hi. The unit is not self defrosting. If the heater tested good, you could have a bad defrost thermostat, evaporator sensor or control board. I have attached the service manual on this unit for you. Check your defrost thermostat for continuity. If that tests good, it is either the sensor or control board. The manual will give you test points to check the thermistor from the control board. You will need to match up the current temperature at the thermistor to the resistance on the chart that it should be at. I have had good luck lately replacing the evaporator sensors even if they have tested ok. The thermistor is much cheaper than the control board and more likely to be the issue. I have attached some videos for you as well.
- Brian, Ace Appliance answered 7 years ago
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Thanks for the help!!!
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