What parts fit the Whirlpool D400?

Valve kit WP978025, Capacitor 12931, Valve kit 978026, Valve kit 978027, Valve kit 978030.

Whirlpool D400 dehumidifier parts: valve kit

Valve kit

Slow filling, no water or no ice can trace back to this valve.

Shop the valve kit on Amazon Other models that use WP978025

Capacitor

Replaces 951363

A motor that hums but won't start often needs a new capacitor.

Shop the capacitor on Amazon Other models that use 12931

Valve kit

Slow filling, no water or no ice can trace back to this valve.

Shop the valve kit on Amazon Other models that use 978026

Valve kit

Slow filling, no water or no ice can trace back to this valve.

Shop the valve kit on Amazon Other models that use 978027

Valve kit

Slow filling, no water or no ice can trace back to this valve.

Shop the valve kit on Amazon Other models that use 978030

1Valve kitWP978025

2Capacitor12931

Part numbers come from the Sears PartsDirect parts list for the Whirlpool D400 (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

On the back panel or inside the bucket opening.

Other Whirlpool dehumidifiers

D200D25A1D25A2D25B0D30A1D30A3D40B0