GE / General Electric Dishwasher Configured machine control board WD21X31900C, Replaces WD21X31900, WD21X24902, WD21X23458, WD21X24800, WD21X21917, WD21X22363, WD21X22951, WD21X23713

Genuine GE configured machine-control board, also described by established parts distributors as a dishwasher main electronic control board or dishwasher control board. It controls dishwasher operating cycles and functions.

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• No response or no operating cycle after basic power is confirmed
• Persistent door-open indication or repeated door-related beeps
• Controls or indicators behaving erratically
• Dishwasher stops mid-cycle
• Dishwasher fails to drain, fill, heat, dispense detergent, or complete cleaning when the affected function and its wiring/components test correctly
• Flashing lights or nonresponsive buttons

Check Before Replacing

• Confirm the dishwasher has power at the circuit breaker and that the door closes and latches correctly before condemning the control board.
• With power disconnected, inspect the board and harness connectors for loose, damaged, corroded, or overheated terminals; reseat only connectors that are visibly loose and correctly keyed.
• Use the appliance's model-specific service or diagnostic mode and interpret the control-board indicator or fault information using the dishwasher's technical sheet.
• If a door-related fault remains after checking door closure, latch operation, and harness continuity according to the model-specific wiring diagram, evaluate the control board as a possible cause rather than assuming it is defective.
• Do not perform live-voltage testing unless qualified to work safely around energized appliances and the model-specific service documentation is available.

Pro Tip

Part Details

Key Features

• Genuine GE configured machine-control board
• Dishwasher main electronic control board
• Controls dishwasher cycles and connected electrical functions
• Configured for use with select GE dishwasher models
• Part marking: WD21X31900C

Installation Notes

• Disconnect electrical power to the dishwasher before accessing or replacing the control board.
• Document or photograph connector locations and any jumper/personality configuration before removal.
• Transfer or set configuration jumpers only as directed by the supplied GE instructions and the dishwasher's model-specific documentation.
• Reconnect each harness to its matching connector and verify that connectors are fully seated before restoring power.
• Run the applicable model-specific service or functional check after installation.

Verified Compatible Models

CDT836P4M4W2, PDF820SGJ2WW, PDT825SGJ4BB, CDT835SSJ2SS, CDT835SSJ4SS, PDT825SSJ2SS, PDT825SGJ4WW, CDT835SMJ2DS, PDT720SGH6BB, PDT720SGH7WW, PDT825SGJ2BB, PDF820SGJ4WW, PDT825SSJ0SS, CDT835SMJ0DS, CDT836P3M4D1

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.