Neff dishwasher not heating up

[Samboy46b]

Hello. Recently bought a house with a neff slimline dishwasher in it.

S58M40X0GB/21

Then noticed the sellers have left me with a dishwasher that doesn’t heat up on a cycle.

what could it be, heater, main board?.
Any help much welcomed.

 

[assuhors]

Check out the previous post, yours has the same heat pump.