If you contact Nest support via live chat they will access your problem
and will send you a link to BOXT website to book a free heat link
replacement service. Last week I had the same problem and BOXT engineer
is coming tomorrow.
Just a quick update. After 2 days waiting for someone to get in touch,
yesterday I contacted Nest support via live chat and my problem was
sorted out for 15 min. They sent me a link to BOXT website to book a
free Heat Link replacement service and the...
Thank you for your reply@Frustratedddd. The Heat Link is passing through
power to the boiler so it is not the spur. I have bought my Nest
separately from the boiler and the installer put it instead their
standard thermostat so it has nothing to do wi...