H72 The power to the thermastat is off

Bumph1 — Fri, 18 Aug 2023 07:41:32 GMT

Woke up this message this morning - H72 The power to the thermastat is off

There is no power / green light on my heat pad either

Noboys has touched anything so i am guessing this is a terminal thing with the heat pad maybe

Can anyone help me please?

Re: H72 The power to the thermastat is off

Jenelyn_O — Mon, 21 Aug 2023 19:14:18 GMT

Hi Bumph1,

Thanks for reaching out. I'm sorry for the delay. H72 message meant that the power to your Nest Thermostat is off.

You can follow the guide below:

1. Check the thermostat power cable, plug and power socket.

If you have a Google Nest Learning Thermostat on the Nest Stand:

Make sure that the Nest power cable is fully inserted into the
power plug and that the plug has been pushed all the way into the
wall socket.
Check that the wall socket is switched on.

Note: We recommend plugging your thermostat into a socket that isn’t controlled by a wall switch to prevent accidentally switching it off.

You can also double check that the socket is delivering power by plugging in a lamp or other electronic device and turning it on.

2. Make sure that the display and power cable are fully seated.

Pull the display straight off.
Check that the power cable is fully inserted into the
power port and is routed correctly through the groove in
the base of the thermostat.
Line up the display connectors and press the display
firmly back onto the base. You will hear a click and the
display will lie flush with the base when it’s properly seated.

3. Check the fuse box

Check the fuse: It’s possible that the fuse controlling power to your system isn’t properly seated or is blown. Re-seat or replace it as necessary.
Make sure that the switch is set to 'on': Sometimes fuse switches can be tricky: you may think that you've flipped a switch back on, but it might not have been pushed all the way.
- Try flipping the switches that control power to Heat Link and your thermostat off and then on again.
- You can also check power on the socket that the Nest thermostat is using by plugging in a lamp or other electronic device and turning it on.

4. Contact a Nest Pro

If you’re still not able to fix the problem, contact a local Nest Pro, who can properly diagnose your heating system and your Nest thermostat.

Best,

Jenelyn