Siemens Tumble Dryer Problem - Hose/filter warning

Hi.

I've got a Siemens IQ300 (WT36V394GB/12) tumble dryer.
It keeps stopping after a short time with the hose/filter light flashing.

I've checked the filter - all clean.
I've cleaned out the airways of the machine, removing lots of fluff - now all clear.
I've even bought a new hose - all clear.

The hose isn't kinked. I've even ran it in the middle of the kitchen with the hose straight to the wall outlet (Which is also all clear) and it still gives the same error.

The only way it will work is with just a few items in, with the machine in the garden with no hose attached!

I'm guessing it's either the temperature sensor or the NTC sensor (whatever that is!).
I' capable of changing the sensors, just don't know how to test them, or which one is likely the problem.

Any help greatly appreciated!!

Thanks

Spent the weekend taking the machine to bits. The temperature limit sensors are working. The NTC sensor is working fine. Cleaned out the entire machine. Motor is fine. Heater is fine. Fan is fine. Belts are fine.

Still produces the same problem.

I can only think it's the PCB.

Any opinions? Thanks.

I have the same issue. Did you resolve this!?

If there is too large a difference in readings between the 2 thermostats (inlet/outlet) then it thinks the filter is full.

I was debating on buying 2 new thermostats and just replace them both.