topic H72 error on app but thermontat working! in Subscriptions and Services

H72 error on app but thermontat working!

Oliviah — Sun, 15 Oct 2023 07:02:08 GMT

Help please. I can no longer control the heating via my nest app or Google home.

Google home says device online but it is definitely on and connected to WiFi.

Nest app says error code h72 but thermostat is on!

Re: H72 error on app but thermontat working!

David_K — Sun, 15 Oct 2023 11:03:14 GMT

The H72 error code usually means your thermostat has lost power, but you're saying it is in fact powered on? Is your thermostat on a stand or wall mounted?

If your thermostat is on a stand

I know it may sound obvious, but make sure that the power cable is fully inserted into the power plug and that the plug has been pushed all the way into the wall socket. I would also check that the wall socket is switched on. You can also double-check that the socket is delivering power by plugging in a lamp or other electronic device and turning it on.

If your thermostat is on the wall

Make sure that the thermostat display is completely attached to the base. If it’s not, push it down on the base as you should hear it click. You can also try moving the Heat Link.

Before you move the Heat Link, turn off all power to your home at the fuse box.
Move the Heat Link so that it is at least 30 cm away from the boiler or other large metal objects.
Also, check that there isn’t anything directly between your Heat Link and thermostat, like a large mirror or refrigerator.
After you move the Heat Link, turn the power to your system back on.

Re: H72 error on app but thermontat working!

LarisaL — Tue, 17 Oct 2023 12:06:12 GMT

Hi there! Thank you for your help @David_K. @Oliviah I'm so sorry to hear about this situation, but I'd be more than happy to help you. Can you please go and check the Heat Link and let me kno ifyou see any lights on the display? Also, please go to Settings > Technical Info > Power and let me know the battery, VUSB, VIN and IIN values.

Re: H72 error on app but thermontat working!

AlexD — Fri, 20 Oct 2023 16:04:05 GMT

Hi, I wanted to check in. Did you see my colleague's message? Keep us posted here.