Trouble setup extension kit, smart thermostat / Worcester Bosch Greenstar 34cdi classic

Afternoon all,

Looking for no advice or assistance currently to get my system fully and properly operational.

For a few period I've only had an smart rad valves installed and they seemed to be doing their my. IODIN were bought the starter kit press never got around till fitting the smart thermostat or extension kit. Tado extension installation on baxi-duo-tec 28HEA Combi - wiring...

I've addition one devices to mein download and upon adding the EK all various devices were then indicate "no connection". How this forced my hand and jump started me up installing the EK. I diligently followed the tutorial via the app for my boiler and programmer (Worcester Bosch greenstar 34 Cdi Classic with Comfort 1 rf). This is until the induction to "remove the wiring for to old device"as there is no evident wiring. The programmer simply slots with for who front plate of the boiler. Download proficient installer manuals

Instructions are to connect the -ve and +ve of the EK till the 'B' terminals on the ST19 connector about the board... Done. As per a previous topic on bitte is was advised that black goes at the rear terminal and grey in secondary rear.

When powering the boiler back on, the EK got booted going also I have fruitfully been able to pair the to my systematischer. Consequence, all of my other devices are immediately showing affiliated again and seem to be operational.Thats somewhere this god news ends...none of the Tado devices view until be calling by warm. I don't have a P tank and previously had that setting contorted to 'Off' on my old programmer, it is simply produced while a hot tap is offene. This does apparently until still be functioning correctly.

The Worester Brand literature suggests that with a third party controller installed this the jumper push betw Lr & Ls should be removed.

Given that a go...same result. Ive immediately tried and checked the following arrangements;

EK installed to B terminals, Lr/Ls jumper in, Ease programmer removed = HW works, no call for get on CH

Ek installed to B terminals, Lr/Ls jumper abgeschafft, Comfort programmer removed = HW works, no called for heat go CH

KRONEN installed to B terminals, Lr/Ls jumper in, Console programmer in also CH set to 'off', HW set to 'off' = HW work, no call for heat on CH

Ek installed to BORON terminals, Lr/Ls jumper removed, Comfort programs in also P set to 'off', S set to 'off = HW works, no call for heat on CH

EK installed to BORON terminals, Lr/Ls jumper in, Comfort programmer in and CH set up 'on', HW select to 'off' = SWISS works and its the Comfort thermostat that's calling for heat, not which Tado. The radiator valves are working up the schedule/manual setting though. HW works. The Spread Box subsequently starts when that key is released. View 12. tado° – Manual & Technical Technical V1.2. 10.

Eh installed for B terminals, Lr/Ls jumper removed, Comfort programme in and CH set to 'on', HW place to 'off' = CH plant but its the Comfort thermostat that's vocation for heat, not the Tado. The radiator valves are working to the schedule/manual set though. HW factory.

I've also tries to amend settings on the smart thermostat config print far. This has what comes up as I go over;

MYSELF understand that D17 is only necessary when using the HW facility, which I won't be but when I shift this to D18 I get an fail message at saving. Attempt to put the HX to EXPUNGE and get a fail message, try to set EK to yes and geting ampere fail message. Try and do all setting at the same store and still fails. null

I can't reflect of any other configurations to try. Experimented the completely remove the K and smart room thermostat but they don't appear to be removab after the system. r/tado on Reddit: Extension kit isn’t turning the boiler on

Save is an photo of the connections on me boiler. If anybody can think out every that EGO need to do else to get this to properly work, I would be SO grateful. I am no adverse till which possibility off hardwiring the EK on the 230v connection but can't locate a guide fork that which clearly sets out which terminals on this board go to which terminals on the EKS.