Heat link dead

[JGbubble]

How long has your thermostat been installed for? 2.5 Years
Did the issue happen during the installation? No
Is there any error on the Nest thermostat display? H71
Have you had any power cuts recently? No
Have you had any work done on your electrical or heating systems recently? No
If yes, was the power properly restored at the fuse board after work was done?
How many zones are present in the setup? 1

was working earlier today - now heat link dead no power - switch and boiler working for hot water when taps turned onbut cannot put heating on

have moved thermo to 1m away - but heat link is dead - no lights - have pressed and held button. - nothing - have turned switch off and on - no difference ( switch/plug is ok as boiler in powered )

can we get replacement heat link ?

thanks John

[CoolingWizard]

John the HeatLink and the Nest thermostat use a special variation of Bluetooth to communicate. Is the battery of the Nest thermostat low?
Some of the workarounds will try to re-sync the Heatlink and thermostat:

At this point I assume you have tried the Nest thermostat option to Reconnect. If that failed, you need to perform a hard reset of the Heatlink by holing the Heatlink button for 20-seconds. The LED will flash yellow and green a few times then will glow blue. Then attempt to reconnect from the thermostat. If step was unsuccessful then, again reset the Heatlink and in addition perform a soft reset or a hard reset of the thermostat. A soft reset on the thermostat is menu>reset>restart. A hard reset is pressing the face and holding it until it restarts. If that fails to reconnect, then try a repairing.
The thermostat and the Heatlink were paired at the factory. We can try to pair them again. Remove the thermostat from the wall or its stand and take to the Heatlink. Press the thermostat front and back and hold it until it shuts down. Then quickly hold the Heatlink button to reset it (blue led). When the thermostat restarts, then take it back to its normal location and see if the Heatlink is connected.

[JGbubble]

Thanks but there are no lights on the heat link - even pressing and holding the button there is nothing. - the socket

It’s connected to is fine with power as the boiler as it kicks in if we run hot water / shower but no heating control - and havnt worked out how to overide /bypass it to at least kick the heating on manually - so a cold night in store -

Have used the Boxt link via nest app to arrange engineer Callout as it said we could get one due to the fault “H71” a free

Replacement heatlink- so will need to get

Some electric heaters in the meantime as they are not coming until Friday .

( have also ordered and complete new thermostat and heat link from Amazon - as cannot sit in a Cold house - but will return it if engineer fixes it ) it seems this might be a common fault. - just dies with no way of restarting

[george_t]

Hi @JGbubble. We understand the situation, thanks for letting me know. Keep us posted on how the replacement goes and let me know if there's anything else I can help you with.

[george_t]

Hi @JGbubble. Just checking in, how's it going with the replacement?

[AlexD]

Hey there, I haven't heard from you in a while so I'll be locking this thread. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community. Thanks, AlexD.