Customer Questions and Answers for Defrost Timer (Mechanical) by Ge

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Manufacturer Part

Defrost Timer (Mechanical)

4.89 (64)

By: Ge

Part Number: OEM7906446

Manufacturer Part Number: WR9X482

This mechanical defrost timer controls the refrigerator's automatic defrost cycle, clearing frost from the evaporator and helping maintain stable temperatures. Replacing a faulty timer restores regular defrost intervals to prevent frost buildup and inconsistent cooling.

Cycles the system between cooling and defrost at set intervals to remove frost from the evaporator coils
Heavy frost on the freezer back wall or evaporator cover may indicate a failed timer
Fresh food section warming while the freezer seems cold, or unit stuck in defrost with no cooling
Compressor runs continuously or never restarts; timer does not advance as expected

What's included: 1 defrost timer Install notes:

Disconnect power before servicing to avoid electrical shock
Access location varies by model; commonly in the control housing, behind the kick plate, or at the rear near the compressor
Photograph or label wiring and transfer wires one at a time to the matching terminals
Mount securely, restore power, and confirm normal cooling/defrost operation

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Questions & Answers

For Ge Defrost Timer (Mechanical) (Part Number: OEM7906446)

Ryan August 12, 2021 for Model Number TFF20DCC

Everything in my refrigerator is working except for evaporator fan motor. It's not receiving 120 volts. Is it the defrost timer WR9X482 or the cold control 5303305486 that supplies 120 volts to this motor?

1 Answer

Ryan, Based on the information provided if the compressor and condenser fan are running the cold control and the timer are likely good. If those components are running and the evaporator fan is not, I would with a multimeter check power to the evaporator fan motor, if no power check the wiring and possibly the defrost thermostat.

Joan January 27, 2020 for Model Number GSL25WGP

Where do i find the timer in the GE GSL25WGP refridgerator

1 Answer

Joan, your model does not have a mechanical defrost timer, it has an adaptive defrost control board that is integrated into the main control in the back of the cabinet. The more likely problem with this model, if you are having defrost issues, would be the defrost heater or bi-metal that is located in the freezer section behind the rear panel.

Pat January 16, 2020 for Model Number TFF24RA

For this GE model TFF24RA where is the defrost timer WR9X482 located?

1 Answer

Pat, the WR9X482 / WR9X482 Defrost Control is located behind the kickplate grille, on the bottom of the refrigerator. It's usually located attached to the inside of the center support frame. Remove power, remove the kickplate, remove two screws and slide the timer and bracket out the opening in the lower frame, remove the timer from the bracket. Reverse the procedures, restore power and check for operation.

Godfrey M January 04, 2019 for Model Number TFX24RFB

There are 4 contacts on the WR9X482 numbered : 2,3,4,1 Are contacts motor driven? with coil between contacts 3(H) - 1(N)? Using a VOM meter:, what should be the resistance across/between these contacts? Contacts 3 - 2 Defrost position Contacts 3 - 4 Compressor run Please advise. Godfrey M.

1 Answer

Godfrey, The contacts for the motor circuit will be 3 to 1 on the defrost timer and should have a resistance reading of between 860 and 2970 ohms. There should be continuity between 2 and 3 when in the defrost cycle and continuity between 3 and 4 in the run for the compressor.

Dave October 08, 2018 for Model Number REFRIDGE MODEL#TBF21DBB

WHERE IS THE DEFROST CONTROL LOCATED ON THIS MODEL THANKS