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Customer Questions and Answers for Refrigerator Main Control Board by Ge

4.89 (64)
By: Ge
Part Number: OEM21656610
Manufacturer Part Number: WR55X11072C

This electronic control board manages your refrigerator's key systems—compressor, fans, and defrost. When the original board fails, you may see warm temperatures or erratic behavior; replacing it restores stable cooling and proper defrosting.

  • Regulates compressor and fan operation to maintain set temperatures
  • Controls adaptive defrost timing and energizes the defrost heater
  • Distributes power to critical loads and processes sensor inputs
  • Helps with: no cooling or intermittent cooling, compressor/fans not running, heavy frost from no defrost, or unresponsive/erratic controls
What's included: 1 main control board Install notes:
  • Disconnect power before servicing; risk of electric shock
  • Use ESD protection; handle the board by the edges only
  • Photograph and label connectors; transfer wires exactly and fully seat each plug
  • After installation, restore power and follow any model-specific service sheet/configuration steps provided with the appliance

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$174.90
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Questions & Answers

For Ge Refrigerator Main Control Board (Part Number: OEM21656610)

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Answer

Skip, The lower thermistor should not have anything to do with the unit not defrosting and it would be recommended to check at the main control board to see if the evaporator thermistor is reading the correct resistance. The thermistor sitting on the evaporator coils should have a resistance reading of approximately 42.2K ohms of resistance. Either the thermistor being faulty or the wiring between the thermistor and the control board being faulty would likely cause this issue.

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Answered by AppliancePartsPros.com   |   Thursday, March 26, 2020

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