Miele T8722 Tumble Dryer Fault Finding Part 2 

Cool air blows cold air by design. Warm air is the cycle which blows warm air. You need to measure the resistance of the element to figure out if it has blown and the element has two resistances. If the element has resistance then look at the relays on the rear PCB. The heating doesn't come on with the warm air cycle until the dryer changes direction. Turn the lights off and run the timed drying. Do any relays flash? They shouldn't flash. I had a similar fault with mine and tracked the issue to a rear relay which flashed.

Heater or the relay's on the PCB broken. U can check the heater with a multimeter. If heater is fine then most likely the relay's on the PCB are gone

I don't want to sound negative but that heating element is done for but here's a way to do it properly unplug the element from the dryer and set it aside , use your meter and check if there is any AC current in the wiring for the heater supposedly there is one neutral and two live wires one for high on one for low each one of them should measure 220 volt AC if yes congrats your electronics are fine if no I'm sorry but I'm afraid that I can't help but anywho all of the measuring process should be done well the dryer is running so be smart and use a pair of gloves And if the heating element is really damaged and you can fix it that's no problem you can DIY one with spare parts from other dryers you just need to find something that fits inside the metal enclosure three elements specifically two connected on Siri for high and another one for low and they all share the same neutral

Oh okay never mind yeah that’s definitely the heater gone or the PCB because when it does that Constant beeping that means it’s an error code

Heater or pcb, the carbon brushes should be fine as long as it doesnt stop with wet clothing on sensor drying

Oh you can test the relays on the rear pcb using a 9V rectangular battery and the multimeter. Please unplug it from the mains etc.

Hi👋🏻 I have the Same dryer and I got an issu with it. Could you please tell me why just the low temperature program working on it and another programs are not ?

Condenser. Gone or fault wire

It must be a pcb fault unless the heater is gone but it would surely show an error? Idk I think the pcb is nackered and btw later today I will upload my tumble dryer destruction for u just need to edit it a bit more