Hoover Dynamic Next Tumble Dryer dxc10tg-80 E21 keeps coming up on the display

I will try and help with this problem Hoover Dynamic Next Tumble Dryer dxc10tg-80

on this Hoover tumble dryer, the most common faults for 21 ever code is a fault with the heating system you need to check the thermostats on the heater also the cutouts thermal fuse, you will also need to test the element itself.  I have put a couple of videos below to assist you in your repair and  I have also put the wiring diagram of the machine. full list of parts are below

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Hoover dxc10tg-80 tumble dryer spare parts

Hoover Dynamic Next Tumble Dryer dxc10tg-80 Cuore NFC electric module

ERROR CODE MOST PROBABLE REASON FOR THE ERROR CODE

E03 Tank is full of water and has to be emptied.
E05 Front NTC sensor is either short circuit or open circuit. Check front NTC sensor and/or
wiring.
E07 Alarm, filter occluded, This error can only appear after the end of a cycle. The filter is
occluded because of fluff presence, the correct ventilation is not allowed. Clean the filter.
E08
Thermo fuse intervention. Replace the thermo fuse and check that ventilation circuit is
clean, check the wiring.
E10 Missing communication between "Cuore" Electric Module and Display Electric Module and/or
Wiring.
E11
In the rear part of condenser the temperature is too high. Check that all ventilation ducts
are clean, check that ventilation system is working well. Check the condenser, the motor,
the fan could be broke/blocked.
E12 Pressure switch doesn’t work. Check the pressure switch and/or wiring. Check that the air
trap is clean.
E13 Compressor NTC Probe is either Short Circuit or Open Circuit. Check the compressor NTC
probe and/or wiring.
E14
Rear NTC Probe is either Short Circuit or Open Circuit. Check the rear NTC probe and/or
wiring.
E15 Main board not programmed. Program the main board.
E19
It is not possible to use NFC tag for any actions until the next POWER ON/OFF. (switch off
and switch on)
E21
Heater control relay on the “cuore” electric module is not working. High temperature has
been reached – Thermo Fuse worked. Check the thermo Fuse, and the wiring. Check that
both the ventilation circuit and ventilation ducts are clean and duct is not obstructed.
Replace the “cuore” electric module only in the case that the heater command relay is
faulty.
E22
Compressor control relay on the “cuore” electric module is not working. Check the
compressor and compressor wiring/connections. Replace the “cuore” electric module only
in the case that the compressor command relay is faulty.

Hoover Dynamic Next Tumble Dryer dxc10tg-80 full list of spare parts for this model below