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Old 12-28-2012, 10:55 AM
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Location: Orange County, California
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Hi Deborah,

There is no defrost timer in your refrigerator. The defrost operates by the control board (#5 at the diagram).

You have to check the defrost heater and defrost thermostat (#10 & #14 at the diagram) for continuity. The defrost thermostat must be ice cold at that time.

If there is nothing wrong with these two parts, replace the control board.

- The defrost heater Part number: 12729128

Part number: 12729128

- The defrost thermostat Part number: W10165425

Part number: W10165425

- The control board Part number: 12868513

Part number: 12868513

Here are the breakdown diagrams and Parts for Maytag ABB2222FEB2 Refrigerator -

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