Replacing drayton with hive

[maaa242]

Hi all.
On trying to replace drayton with hive but theres no success.
All lights come on when everything is connected but when I try to boos or turn on heating my combi boiler doesn't turn on.
This is wiring done on drayton.

 

[ianmcd]

Is that the only control you have or do you have a room thermostat somewhere ?

 

[maaa242]

Theres as well other one which is room temperature I think. Its basically square with round dial which sets temperature

 

[CBW]

Turn this up, what happens?

 

[maaa242]

It controls heating so when turn it will heat up radiator but not hot water

 

[CBW]

That’s because you have a timer and room thermostat for heating only, because you have a combi boiler which heats on demand.

 

[maaa242]

Fair enough .
Was I trying to replace wrong things then?

 

[ianmcd]

The hive replaces the programmer and the room thermostat has to be linked out or your Hive wont work, should work when you turn the old thermostat up to max but it really needs disconnecting properly

 

[maaa242]

I've replaced programmer with hive. Then disconnected thermostat and still nothing unfortunately

 

[stem]

If you simply disconnect the old thermostat, the wiring will be 'open circuit' and the heating will not operate. The thermostat needs to be decommissioned properly.

The thermostat looks like a Drayton RTS8 Combi Stat. If it is, the two 'switching' wires that used to go to the thermostat terminals L and 3 [or L and 2 depending upon how your system was originally configured] see below, should be connected together to complete the circuit. Any neutral wire is simply disconnected or isolated.

 

[maaa242]

I had a loop between L and 1 on old one .

 

[stem]

I don't see how? The Combi Stat doesn't have a terminal 1. Is it not an RTS8 Combi Stat, or are you confusing it with the programmer?

The Hive replaces the Drayton LP programmer and the old room thermostat (if it is an RTS8) is decommissioned as I described above.

 

[maaa242]

Yes I'm confusing with programmer.
Sorry
I was replacing wrong thing all along then

 

[maaa242]

How I've done it.
Disconnect old thermostat from programmer.
Change plates from programmer .
Slide cables which were in old programmer in to same slots on new plate.

 

[stem]

The Hive does replace the programmer, but also...

If you simply disconnect the old thermostat, the wiring will be 'open circuit' and the heating will not operate.

This appears to be what you have done, so you now need to link the two original thermostat switching wires together to complete the circuit as I described.