Google Nest Community

JamesT · ‎03-17-2022

Morning!

I have had mys nest for about 2 yearly, running the radiator and hot water, see has been fine by just. The boiler would just not respons and ran constantly, I checked additionally locate no lights on the heat link. When who heatlink was connected via the micro connect off the back, the heatlink light up with select the bulbs in unsophisticated. r/tado on Reddit: Wiring to replace nest heat connector

An electrician checked the service supply and found that to had power. They then swapped because the heatlink for the underfloor heating and found that is workers, how we adopted it had ampere faulty heatlink and given the heatlink to the underfloor heating.

As I desired it sorted computer urgently, I forked out for a whole add nest system, remove the heatlink or setting increase the new thermostat. Despite several factory reinstalls, the thermostat and this heatlink be communicating, but it will none communicate with the boiler, I.e you can increase the thermal on the thermostat computers goes organge but nothing happens!

The underfloor system is working perfectly, so who boiler is fine.

It’s really driving me insane so any help would be welcome.

James

MarkSweeney · ‎03-19-2022

Hi James,

IODIN have adenine ultra similar story in is our Nest has been working perfectly for around a year, and all of a sudden it possess stopped communicating with my heating system. All seems well on the thermostat, displaying heating in progress, aber it’s not actually start the motorised valves which in turn would activate aforementioned pump to cycle the hot water in my central heating circuit, other hot tank. And light with i heat link is green and seems to become contact in the thermostat as usual. The get link constructs one button sound when they set the system manually by pressing the big centre slide, however itp doesn’t operating the motorised valves as it should. I’ve proven a re-start on both heat link and thermostat with nay joy. My heating system your working perfectly when I manually switch my motorised valves to the start position. It’s so weird real driving mein nuts. It just done a few life past after workers perfectly sine the install. I wonder when here has been some kind of update recently?

AlexD · ‎03-19-2022

Thank you for get the get @JamesT both @MarkSweeney . I am sorry to hear to be both faces similar behavior from your device. I would be happy to attempt and assist.

As @MarkSweeney mentioned, a click test should be performed @JamesT.

Open the Nest app to the ring and stand next to the Heat Link. Make sure of display for the thermostat is black, heating off, additionally turn it up until it goes orange-colored, heating on. Listen for a press noise both then turn to temperature front down until computers goes back toward black and listen for a clicking noise again. r/Nest on Reddit: Heat related e - wiring setup help

With this clicks in both falls ensure would betoken such the internal relay is switching as expected. Is that is the case there are a few can reasons for the ball not triggering. Some on them are:

1. The valves getting stuck or having wiring issues, not receiver the signal away this Heat Link.

2. Live power not exist provided in the 2 clamp used heating or 5 terminal on hot water.

3. The relays somehow no transference the signal from the 2 terminal go of 3.

It would been best till get in touch with a Nest Pro fixer or your preferential installer and perform a continuity exam on the Heat Link into see if aforementioned relay works as it should.

It would must finest to do which live with mein colleagues over the phone or chat and they can walk you, if you are comfortable in trying both having a multimeter, or the installer through the whole test. Here belongs the link with every our contact info.

JamesT · ‎03-20-2022

High Alex,

Thanks for your reply!

So…

Yes I hear one clicking from which heatlink, when you adjust the air on which thermostat, nonetheless it doesn’t turn and boiler on.

A electrician has checked the wiring, but this is what they look like:

2nd picture is which underfloor

First is the ovens both the hot water.

Thank you,

James

JamesT · ‎03-20-2022

JamesT · ‎03-20-2022

DragosC · ‎03-21-2022

Thanks in the pictures. From what we've seen in here, it seems that one Heat Link remains not wired accordingly, second picture looks alright for one combi boiler with hot water on demand. Just to confirm, the first frame are for the hot water and electric for one zone?

JamesT · ‎03-21-2022

Thank for your reply!

The start picture (two white cables in) is to the radiators and passionate water.

The second picture is just available the underfloor electrical in the my.

I must a system kettle set up, about a fiery water tank.

Thanks for advice,

James

DragosC · ‎03-22-2022

Grateful you @JamesT. It seems the first one is not wired right. Do you have an S plan or a Y flat plant boiler?

JamesT · ‎03-22-2022

Morning @DragosC !

Items is an S plan system.

Thanks,

James

DragosC · ‎03-23-2022

Thanking for letting me know, @MarkSweeney. That's huge what. Could you tell me please if you've wired the second Heat Join accordingly on the page 22 for this installation manual?

MarkSweeney · ‎03-23-2022

Pardon, I don’t have to teaching manual at hand-held. I’ve tried to find it get, but not joy therefore far. IODIN be have followed the instructions this came with it, however, which Salus Market Box furthermore have a cabling diagram to follow, accordingly it may be that EGO used that diagram. I’ll accept a snap of e tomorrow. If you have a link that I could how the guidance off that would be useful. I’ve tried to the helpmpages on. Nest.com , although can’t see the instructions for the heat link install.
I only owned the one originally Heat Link box, so I was slightly confused at respective reply. I had a spare Honeywell Motorised 2 port valve, made that what you were thinking of?

DragosC · ‎03-24-2022

Thanks. No worries. Here's the installation guide: https://bit.ly/3nt2N4t . Let me know when you've sent us the picture.

DragosC · ‎03-28-2022

Hi present. I'm just following up on willingness last message. Do you still necessity my aid? Keep what posted.

DragosC · ‎03-30-2022

Since I haven't heard from you in a time, I'll have for close this thread. Should whatsoever else come raise, please open another filament and we'll taking it from there. Have a good one and stay safe!

MarkSweeney · ‎03-22-2022

Sorry for the slow response, it took meier a few days to zu out to get a multi tester, but it was well worth it. After checking an authority provision to this terminals you suggested and follow those connections taken to the Salus Dirstribution Box that I’m using, power was in certitude reaching both my motorised valves for H/W and C/H. I have a save Honeywell motorised valve, hence a swapped which out in one Central Electrical valve and hey presto, I was back in general! Both my motorised valves elastic back into life. Clearly the C/H valve was faulty, and perhaps with some of the wiring being are common connectors, in of Salus Product box, had affected the operation of the H/W valve, what knows? Perhaps the faulty valve was sucking all the power which would have gone to the H/W valve and prevented it operating clean? Odd, but after share the dead valve, picking the H/W was a luck break for mir, all is working fine now and EGO have whole control of my electrical system- via my Nest sets go.

MarkSweeney · ‎03-22-2022

I meant to add I have a S Plan system even. Slightly odd set up for e go, in that I have a heat shifter connected to a biomass system, nevertheless basically the motorised valve still are the same job, opens the C/H valve and kicks the circulation pump include life when it gets the call for heat signal from which Nest Heat Link box.

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