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Customer Questions and Answers for Main Board by Ge

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Manufacturer Part
4.89 (64)
By: Ge
Part Number: OEM18840534
Manufacturer Part Number: WP26X22240

The Main board is an OEM part for GE window air conditioners. The main board is the central control unit that regulates all critical functions of the air conditioner, such as temperature settings, fan speeds, mode settings, and more. It controls and monitors operations to cool or dehumidify the air as needed.

Causes of a bad main board can include short circuits, cracked solder joints, or defects in the electronic components. 

Symptoms of a bad main board include:

  • The air conditioner not turning on at all
  • The control buttons not working properly 
  • Erratic temperature readings 
  • Constantly running or short cycling operation
  • Unusual noises coming from the unit

This OEM GE replacement ensures seamless functionality for years to come. It is also compatible with some Kenmore air conditioners. 

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Questions & Answers

For Ge Main Board (Part Number: OEM18840534)

1 Answer

Bob, There is a way to test the thermistor at the board but will need to get your tech sheet or wiring diagram from the unit.

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1 Answer

Tim, You can test to see if there is power coming into the unit and if there is but no power going out to individual components then the board will be faulty.

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1 Answer

Buck, with the power supply cord unplugged, the front panel would need to be removed. This will allow access to the main control mounting bracket and control.

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