Hotpoint FDD 9640 Washer Dryer F13: Confirm the Drying Phase Before Any Sensor Repair
Hotpoint's opened official error guide describes F13 as a dryer temperature-sensing fault on washer dryers and says the reported symptom is that the washer dryer is not drying clothes. The FDD 9640 family is a front-loading washer dryer, with the opened official UK product/energy documents identifying the FDD 9640G UK variant; the complete suffix and 12NC should still be checked before ordering anything.
Hotpoint · Washer Dryer · Appliance Repair