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Thanks John, is there any other way to test/verify or should I just swap the pipes ?

Hi All It is always great to post things here as everyone is willing to help. My UFH got installed 1 year ago and it does not get heated properly. I notice pipes connected to blue are hot and pipes in red are warm so not sure if engineer has connected pipes properly. I am also not sure on the...

Thanks again as always, really appreciate your help.

Performed reset and it seems to be stable since than will keep it under monitoring

Performed reset as per guide and still same, heat link kicks boiler but after few minutes boiler sign for water goes off but nest app still shows that it is switched ON. I have called out engineer as it seems issue with nest to me. Thanks as always for your help and guidance,

Now I noticed the light on boiler also turned off after some time so now I clicked manual on heat link and now I can see lights on heat link and boiler light also turned on for some time now. It seems issue with heat link to me, any way to rectify ?

Another thing I tested, reseted the heat link and than tried to switch ON hot water, i did hear the click sound within heat link and it triggered the boiler to turn on and I also noticed water sign on boiler switched ON. So it looks good but it did not turned on water sign/light on heat link...

Thanks Stem, currently water is on and heating as well but light on nest is in steady green circle as below: I think it should show steady green drop sign to show water is turned. And on mobile nest app it is below: On nest it is like On boiler it is like I tried turning on...

@stem, its been 10 months it was all working perfectly fine so thanks for your initial help. But from last 1 month I have noticed that heating also turns on with hot water timer so not sure where is the issue. To clarify heating works as per nest thermostat but it also turns on with hot water...

PIR sensor light is 10W LED Other 3 lights are E27 - 5W

Firstly thanks for your time and looking into it, yes Red is going directly to Sensor and yes it makes clicking sound when light is turned on. Looking forward to further assistance

Yes it is Red, Brown and Blue wires going to sensor. Can I add extra wire from one of sensor wires to make it work

See below, I just opened the light as it has sensor separate so may be possible to take switched live ?? Can someone also confirm if I combine yellow and blue wire will it complete the circuit for other lights once sensor is ON ? See below pictures

I believe I can do of guided. As I managed to do Nest myself...

I am sure there must be a way using loop that when sensor triggers to turn it's light ON at that time it can complete the connection cycle for other lights as well.

@stem any suggestion?

I fully ag Any workaround that can be applied to achieve

I assumed it to be earth as i am still learning DIY so need to know a way that sensor of new light also becomes switch for other 3 lights

Hi Everyone, Currently I have 3 lights in back garden with 2 PIR sensor. Any of 2 sensor will turn on 3 lights. Picture of PIR Sensor Top wires Red, Blue and Yellow are main wires. I am planning to replace it with PIR Sensor light and to have extra light ant that when sensor light turns...

Hi Stem Just re inserted the cables as you suggested a d its working like a charm so your were right it may be loose cable connection to 5. Thanks again and have a nice day.