Start cycle on 30 min dry, it stops at 23/24 mins & does nothing, other than showing time in display,
up to that point it heats, fan ok & pump works & condensing valve ok.
washing machine not affected.
Found wad of fluff in fan housing at bottom, but still stops !
It doesn’t look like it does have a chip, just relay control board. But it stopping 5 mins or so before it should makes me think that that point of the cycle is the cool down period of which a relay may be at fault?