Washer-dryer leaves detergent or fabric softener in the drawer at the end of the cycle.

Safety first: Unplug the appliance before removing the dispenser drawer.

Step-by-step checks:

• Remove and clean drawer: Pull out the detergent drawer and remove any inserts. Soak and scrub to remove caked detergent and softener.
• Clean housing: Use a brush to clean the water jets and channels in the dispenser housing.
• Check water pressure: Ensure household water pressure is adequate and inlet filters are clean.
• Test fill to drawer: Run a short cycle and observe water flow into the drawer (with the top cover removed, if safe). If flow is weak to one compartment, the corresponding valve channel may be partially blocked or faulty.

When to call a technician: If cleaning does not restore proper flow, the inlet valve assembly or dispenser housing may need replacement.