topic H71 Error - no Heat Link power - no heating in Nest Thermostats

H71 Error - no Heat Link power - no heating

GodsC147 — Sat, 28 Jan 2023 21:28:51 GMT

Hi Team!!

Need your urgent assistance please.

Im getting error H71 on the thermostat and it is due to the Heat Link no longer being active - there's power and the boiler is on/providing hot water but the Heat Link has no light on.

I've run through troubleshooting steps and nothing happens. I suspect the Heat Link is faulty. I've had this installed for a few years and has been working fine until now.

Be grateful for your swift assistance here so we can get our heating up and running.

Thank you!

Carl.

Re: H71 Error - no Heat Link power - no heating

AlexD — Mon, 30 Jan 2023 09:50:10 GMT

Thanks for reaching out here @GodsC147. I would be happy to try and assist.

If you have not already, check the breakers and switches at the location, to make sure nothing has tripped. Also check the boiler as it can sometimes have a separate switch on it. Confirm it has power, it should have a display or LED that turns on.

If it all looks good try and power cycle the Heat Link, if you're comfortable in doing so. Turn the power to the Heat Link off for a few minutes and then turn it back on. See if it has any reaction after, when you press the button on it.

Re: H71 Error - no Heat Link power - no heating

OannaCG — Thu, 02 Feb 2023 09:52:31 GMT

Hi there, just checking in, did you manage to see our message above?

Re: H71 Error - no Heat Link power - no heating

UanaC — Fri, 03 Feb 2023 10:27:40 GMT

Since we haven't heard from you in a while, I'll have to close this thread. Should anything else come up, please message us again and we'll take it from there. Have a good one and stay safe!