The fault on the above model is that the machine switches off after about 10 minutes when it is on dry. (the washer is ok)
I have checked the heater, fan and TOC which seem to be ok
I also removed some gunk from the dryer manifold (althoughI didn’t remove it completely)
After testing it seemed to be ok, but customer has phoned to say it is happening again.
Probably the hose at the bottom of the condenser is blocked. Pour loads of hot water through the manifold and carefully rod with a fill hose or equivalent.