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I’ve still not managed to get time to check the wiring over but the heat link is keeping water hot and also radiators as per schedule/ nest thermostat. It may be paranoia but radiators seem a little too hot? The boiler is an Ideal HE15 so I’ve turned down the stat on the front to about 1/3 of...

Thanks Stem. The wiring does appear to be ok on checking the heat link. The three green lights are all on when I hit the button on the front of the nest. The hot water schedule activated the boiler tonight although only the steady green light illuminated. Is this normal operation? Can you also...

I’ll take another look tomorrow and check the wiring. Maybe also try the Danfoss controller back in to test the 3 way.

The second diagram is the wiring centre with the different inputs. I`ve ran the cables from the back box behind the Nest using wago wire connectors so colours changed slightly but wiring diagram still accurate. The bottom two wires on the centre I think are to the old thermostat (which is...

Yes. Everything worked well before. No issue with the 3 port. I`ve not touched any wiring in the heating wiring centre - only replaced the CP715 for the Nest Heatlink.

Apologies for another Nest question. I`ve finished installing the Nest Heatlink to replace a Danfoss CP715. The rest of the system seems to be all Danfoss too (three way valve, tank thermostat on a Y type system). Installed without any major issue - central heating working fine but don`t seem...