What This Listing Includes: One genuine OEM WD21X34778 dishwasher configured main machine control board as supplied for the manufacturer service application; adjacent parts, hardware or accessories are not included unless specifically stated.
Compatibility Basis: Part-specific compatible-model evidence; representative examples only
Model Evidence Note: Representative compatible models are shown as positive examples, not a complete fit list. Verify the full appliance model number, including suffix/revision, against current manufacturer documentation or part-specific service information.
Correct Part / Compatibility Check: Confirm the complete appliance model number (including suffix/revision where present) is explicitly associated with WD21X34778, or that the manufacturer model-specific parts diagram calls for WD21X34778. Also verify the exact installation position and critical fit details.
Distinguish From Similar Parts: Do not confuse the main control, user-interface/display, relay board or configured control; connectors and programming can differ.
Possible Related Symptoms / Reasons to Inspect: Inspect after model-specific diagnostics indicate a control/interface fault; symptoms alone do not prove the board is defective.
Important Safety / Service Note: Disconnect appliance power before service. Handle electronic controls using appropriate static precautions and verify all connectors before restoring power.
Ordering Note: Symptoms can identify a system to inspect, but they do not prove this specific component is defective. Confirm the OEM part number or model-specific parts diagram before ordering.
Specifications & Compatibility:
Manufacturer: GE APPLIANCE
Manufacturer Part Number: WD21X34778
OEM Status: Genuine OEM Part
Product Type: Dishwasher Configured Main Machine Control Board
Appliance / Application: Dishwasher
Installation Location: At the model-defined electronic control / user-interface position.