Enquiry preparation
Washer-dryer: describe the last ordinary use
For a washer-dryer enquiry: Write down the selected function, the stage reached and the changed result. Separating what you saw from what you suspect makes the first conversation more useful.
Model and requested work checked before an appointment is agreed.

Apply this to your product
Explain which half of the combined appliance changed. A successful wash followed by damp drying needs a different account from a drum that never drains.
Why the detail helps
The washer-dryer reference, fitting and observation allow a more specific discussion. They do not establish a failed part or guarantee a repair.
Before an appointment is agreed
Confirm suitable work, proposed charges and access with the team. An enquiry notebook is preparation, not a reserved visit.