Nest 3rd Generation install - Ideal Logic 24 boiler issue

[rom4n]

We have just installed 3rd gen Nest on S Plan system (using L, N, 3, 6 and linking L-2 and 2-5). Central heating and hot water seem to be working. Issue is boiler is running status 'c' constantly rather than going to '0' standby mode - as if there is a constant demand for heat? There is a constant noise too which sounds like it may be a fan? Any ideas what this might be - wiring issue or boiler problem?

 

[shambolic]

Was it doing it before you fitted Nest? If not it’s a wiring fault. Hope this helps.

 

[rom4n]

Any ideas what we might have done wrong? We seem to have followed diagrams etc and just can’t figure it out!

 

[md45]

I had a similar problem on a y plan system and after having a few day's headache and getting some advice on here about wiring etc, i decided to get a nestpro to come and look over things... he found that the heatlink was faulty and wasn't switching the heat off...