[ct2023]

Hi,
I have a 3 year old Amanna frig with the freezer on the bottom. The freezer works but the frig warms up. I noticed frost on the coils in the frezzer so I defrosted the frig. It worked fine for about 10 days and then frost built up in the freezer again, then the frig warmed up again. I'm not sure if this refrigerator has a defrost timer, defrost heaterand defrost thermostat or the newer electronically controled defrost system. Does anyone know? what might this defrost problem be.
Any help would be greatly appreciated.
Amanna Frig model number ABB2227DES

[Gene]

The defrost heater and the defrost thermostat in your fridge are located in the freezer, behind the rear panel in the evaporator area. Defrost timing controls by the main control board in the fresh food compartment.

The first thing I would check for continuity is the defrost thermostat. It must be closed while it's cold. Replace it if it's open.

Then check for continuity the defrost heater (with at least one wire disconnected). Replace if it's open.

If there is nothing wrong then the control board has to be replaced.

- The part number for the defrost heater is AP3502547

- The part number for the control board is AP4318990

In order to provide the right part number for the defrost thermostat I need the serial number of the fridge.

Gene.