Nest Thermostat E / Ideal Independent c24

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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?
IMG_4114.jpg
 
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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?
 
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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.
 
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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
 
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