Bosch WTV74104GB/04 Vented Dryer “Clean” Light displayed

Good afternoon all,

Wondering if anyone can shed any light on a problem with the above dryer?

I visited today, as my customer said the clean light came on randomly, despite the filter been clean/clear.

I’ve checked, and cleaned the circulation ducting completely, and monitored it for around half an hour with a damp sheet inside.

All appears fine, and customer will monitor operation… however, I just wondered if this is a known fault, and if I should be testing other areas/components if problem recurs, as nothing conclusive found today?

Many thanks,

jonty