When a washer-dryer is not drying properly, internal diagnostics should check how air circulates, how heat is supplied, and how moisture is removed. The order depends on the installed system and the confirmed symptom.
Identify the system in the same drum
A unit with a heating element, one with air venting, and one with a heat pump are not checked as if they were identical. The manual and parts diagram define the fan, ducts, sensors, and condensate management that apply.
Before disassembly, rule out the conditions of insufficient drying and an extended or interrupted cycle. A damp result due to load or selection does not prove a heater fault.
What the inspection should separate
- Air circulation: route, blockages, and fan operation.
- Heat supply: components and commands specific to the architecture.
- Reading and thermal protection: sensors, connections, and conditions that cause a shutdown.
- Moisture removal: condensate, drainage, or venting depending on the unit.
An accessible blockage may allow authorized maintenance; internal ducts need their own intervention procedure. Not all models have the same filters or access points.
Repair and final check
Tests should link each component to the observed condition. If there is excessive temperature or an unusual odor, stop using the unit and investigate the cause. Resetting a thermal protection without correcting the issue is not a repair.
Disassembly and energized measurements are for qualified personnel. The refrigerant circuit in a heat pump requires specialized service. After the repair, verify the integrated function and restore ducts, seals, and protections; do not adapt a standalone dryer procedure.
The estimate should indicate which part of the air, heat, or moisture path is failing and how it will be verified afterward, rather than grouping everything as a drying problem.