Nest Thermostat E / Ideal Independent c24

[Max Warren]

Hi all,

I have fitted a Nest Thermostat E and wired NO and C from the Heat Link to my Ideal Independent C24 as shown in the attached photo, having removed the jump (there was no previous room stat). I have switched the boiler to manual on.

The heating continuously runs, even when I turn the stat down below room temp and hear the heat link click, indicating it has received the instruction.

Does anybody have any ideas?

 

[Swwils]

Consider using opentherm instead

 

[ianmcd]

That side of the wiring is correct, post a pic of the wiring at the other side at the nest E

 

[CBW]

Goosed heat link out the box?

 

[RandomGrinch]

Goosed heat link out the box?

Simple troubleshooting step in that case, disconnect the 'Room Stat' connection to the Heatlink, and see if the heating turns off.
Although as the OP has said about hearing a click, that suggests that the Heatlink relay is at least partially operating.

The heating continuously runs, even when I turn the stat down below room temp and hear the heat link click, indicating it has received the instruction

Out of curiosity, how long have you left the system running, after you have turned the stat down (and heard the click), before intervening?

 

[Max Warren]

Simple troubleshooting step in that case, disconnect the 'Room Stat' connection to the Heatlink, and see if the heating turns off.
Although as the OP has said about hearing a click, that suggests that the Heatlink relay is at least partially operating.


Out of curiosity, how long have you left the system running, after you have turned the stat down (and heard the click), before intervening?

I have left it maybe 2-3 minutes. Mainly because I have had a Nest before and it normally kicks out almost instantly.

 

[Max Warren]

Image of Heat Link wiring here. Thanks all for the help so far!

 

[CBW]

Image of Heat Link wiring here. Thanks all for the help so far!

View attachment 279787

Wiring looks ok, so probably a goosed heatlink.

 

[ianmcd]

if you have an on board timer , it needs to be set to constantly on, if it is, put the two wires in NO and COM in the same terminal, if the boiler now comes on the Nest E is faulty

 

[Max Warren]

Wiring looks ok, so probably a goosed heatlink.

Ok thanks! But one question.. what does goosed mean???

 

[CBW]

what does goosed mean???

Faulty, broken, knackered, fecked, they all mean the same