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The connector

I found the problem finally. i use this type of connector for connecting some of the wire together, and i have change the connector to a new one, and it's work! I don't know how to say but just want to let you know i am really thank you for your help.

Thank you, hope i can share the good news tonight, haha

The cylinder may heat up because my wife truned on the hot water function with the old programmer this morning for showing, maybe i need to test it again tonight?

I have checked the wire, and seem not problem. I have use the "testing heating" from Nest thermostat and it is work, the boiler status show "C" and burner light was on. I am thinking if the heat function okay, the only possible problem of wire shoulg be the one at Nest terminal 6... And i find...

The big guy picture.

Do you mean this big guy? Where can i find the Cylinder thermostat? I have no idea of it as i only use combi boiler before.

I will check all wiring again, hope can find out the answer... Cylinder thermostat is it mean the Nest thermostat?

I have finished the installation, the heating function look good after using Nest testing function, however the hotwater function seem not work. When i boosting the hotwater by app, my boiler seem not working...there is no any sound and the burner light have not turn on... Any idea about it...

After study the Heatlink menu, i think the Grey wire in terminal 4 need to connect to Nest terminal 3 insteed of Nest terminal 4, as it is for the Heating, is it correct?

Typos.... it should be Grey

Thank you so much. I will try it at this weekend. And may i ask for your help to check if the wiring below is correct that for the Heatlink What I am thinking is N: 2 Blue and 1 Gary to Nest N L : 2 Brown and 1 Black in L to Nest L terminal 3: 1 Black to Nest terminal 6 terminal 4: 1 Gary to...

Thank you for your reply, I think I will use the easy way this winter first. And is it okay if I replace the existing room thermostat with a junction box that puts L&3 wires together? how to handle the N?

Hi All, I'm looking to replace my Drayton Tempus programmer to Nest Heatlink, but I'm unsure of the wiring, can anyone help please? Attached photo is my current wiring. Drayton Tempus programmer 2 Blue and 1 Gary in N 2 Brown and 1 Black in L 1 Black in terminal 3 1 Gary in terminal 4 1...

Thank you Terryplumb So, for my situation, it is more likely the hot water retain in cylinder that make heat it two days ago. I have double check that the switch beside cylinder have not been turning on, is that the only way to heat the water by electric? Thank you

Thank you. But my situation is I have turned the hot water on manually two days ago and turn it off after I finished shower, I think it only around 4-5 hours. I find that I still have hot water without turn on the hot water, it that normal? Thank you.

Hi All, I have moved to a new house and then find that there is a "cylinder" that I have no idea have to use it. Before moving to this house, I just use a combi boiler. I turned on the hot water with Drayton for the shower two days before, and then I turn it off after I finished. And I find...