Taco and Viessman Vitodens 100
I have a Viessmann Vitodens 100 and it has been running off a Delta More wireless thermostat for a couple of years.
Today I purchased a Tado V3 heating and hot water thermostat kit and also a number of Tado smart radiator valves. The valves are on back order so I thought I would switch the existing wireless thermostat to the new Tado one whilst awaiting the radiator valves
The previous receiver was wired into live and Neutral and then one wire into '1' and one wire into 'L' on block 96 on the boiler. I have wired the Tado exactly the same
The issue I have is that I can turn the boiler on by increasing the temp on the App or the wireless device but I cannot turn the temp down. When I go into the App and click turn off it just stays on.
What is the correct way to wire this up into the boiler taking into account I will be installing multiple Tado smart radiator valves when they arrive
Thanks in advance