Installed Tado Smart Thermostat Starter Kit , hot water and radiator turn on at the same time.

[wtestu]

Hi mates

I tried to install Tado Smart wireless Thermostat Starter Kit V3+ few days ago.

We are using Ideal Logic Heat 15 system boiler with a water tank on 1st floor, the old controllers are Danfoss TP9000MA and Danfoss TS2.

I just follow every step tado app told me to do and seem that everything are alright after the installation ( at least the boiler still working : ) )

When I turn the hot water on ( flip the virtual button in the app) , not only hot water is on , all the radiators are on too . Even thought the radiator can turn off by turing the TRV but i can't turn off rail radiator since there are no trv for turn off.

This is not normal when I use my old Danfoss TP9000 . It can separate boil a tank of hot water only or turn the radiators on.
Also , the boiler will be firing for few minutes in every hour. This is not happened when I use my old Danfoss TP9000 , too.

I think the problem might be come from wrong wiring. one of the attached image was the wiring from danfoss tp9000 , and the other one is tado extention kits.

How can I turn the CH off ? I just want hot water for shower.
also why the boiler firing up every hour even I set turn off in Tado app.

Any pointers are appreciated.


Thanks,
Ant

 

[stem]

The wire controlling the central heating would have been the black wire in the TP9000 terminal 4. The one in the picture below marked Heating N/O

However the corresponding terminal on the Tado [also marked Central Heating NO] should now have the black wire from this terminal in in, but it doesn't, it's empty.

You also have a brown wire in the hot water NC, a terminal which didn't have a wire connected to anything on the TP9000.

So, if the wires now in HW NC and HW NO were previously in 3 and 4 both are wrong. If this was the case, then:

The black wire that was in terminal 4 should now be in CH NO
The brown wire that was in terminal 3 should now be in HW NO