Wdd960 F13 error code?

well put the machine on to a dry cycle does about 20 mins then f13 appears.

had lid off to check all wiring but all seems fine so guessing its the thermostat that beeds replacing, has any 1 got and videos or pictures to help me through fixing this?

the machine gets heat into it aswell just incase it might possibly be the fan.

also the heating unit can this come out of the machine totally as it looked like it was pretty well stuck in to the front where the door seal was and didnt want to pull incase i ripped it.

many thanks guys hope some 1 can help