Mine start working again after quick phone to TADO customer service, they updated my system driver online, so it seems like it was problem with controller rather than valve.
For interested people new blue box below...
Hi All,
Last night i noticed that all radiators are cold, went to see valve an it was sitting on HW but didn't turn to HW&CH, when i manually turn the valve to HW&CH all radiators went hot and after reaching set temperature it come back to HW, when temperature went below set one and CH should...