I’ve installed a tado on a Danfoss, but when tado is set to off, the radiator is still very hot even severel hours later
the adapter Can around the Danfoss is fasten and the pin is at the correct height
@Nissdk I cannot think of any reason other than incorrect fitting of the tado TRV. I would be tempted to re-do the installation making sure that you fully tighten the coupling.
samd suggestion is a good idea. However, if that wouldn't solve your case, please contact our support chat at www.tado.com