Hotpoint TDWSF83BEP Stops shortly after starting

Hi Paul TDWSF83BEP Door Filter LightIm looking for a little assistance into a tumble dryer fault please and the spares i may need. The door filter light comes on, if you push start machine comes back on again but then soon cuts out again with the red light on. So i have investigated and the following has been done.Tumble dryer does get warm but keeps cutting out with red door light.I dismantled door filter and cleaned any lint debris from filter and duct.I removed condenser and cleaned under tap as per instructions found online.I removed right side of machine and found lint under the NTC sensor by fan motor, removed this lint as thought this was problem, but machine still does the same.Opened covering here as well and cleaned any lint from here, only minor.Removed rear heater to look to see if heater had any lint, but hardly any found.So tested the sensor on top of heater and the thermal fuse, thermal fuse has continuity and sensor has resistance circa 18k Ohm that reduces when warmed as expected, heater tested (not expected faulty as was getting warm) and both coils ok.tested sensor by fan motor (NTC?) and again this has a resistance and reduces with warmth.So I inserted a thermocouple close to the two sensors at top of heater to see what was going on and when you start machine it appears to turn heater on which rises to circa 250 Deg C this then reduces down to circa 30 Deg as fan cycles air through. It tries again to heat and it goes to circa 340 Deg C but then stops and lights the door filter light.Removed and reinstalled connections to pcb by selection knob but no different.I guess the thing is cutting out because it thinks blocked by lint and overheating but sensors appear to be ok,any help with spot where my thoughts are wrong please and what to test to understand what i need to purchase to repair?Thanks V MuchKevin

Kevin

I will try and help with this problem with your Hotpoint TDWSF83BEP tumble dryer

The first thing I would check is the pump system - this pumps the water from the water collection bowl at the bottom to the water dispenser at the top. If this is not working correctly I believe it will cut off the heating system​, also check the float switch. The second thing I would check is if you have already done a comprehensive check on the heating system including the thermostats and both sides of the element are working correctly, the NTC seems to be working and any forward thermostats on the ducting tube, then I would check the relays on the circuit board,

also check all wiring connections there is also a chance you have a faulty Printed circuit board

I have included videos below to assist you with these repairs

Hotpoint TDWSF83BEP tumble dryer