Hoover washer/dryer, dryer not heating up

[technophobe]

I have a Hoover
WDYN 9666PG-80 , about 3 years old. The dryer had probs in that it didn't heat up a couple months back, the guy came and said it was a build up of lint or something similar and took 2 mins to fix it.

Same prob has happened again, and I have read that you can sometimes reset the dryer by pressing some button in the casing. Does anyone know if this machine has this facility? I really don't want to spend almost £50 getting this fixed if I can help it.

I have no technical knowledge at all, I went to take the cover off earlier but discovered it was hexagon bolts so need to get some kind of special tool to get them off.

 

[jj4091]

The last engineers work should carry a warranty, either it was not fixed properly the first time or you have a different fault. If you have cleaned out excess lint as shown in the user manual & given you have no technical ability, then call him back to fix it properly.