Nest thermostat Heat Link

Troubleshooting Steps

How to manually turn heating on or off when your Nest thermostat can’t connect to Heat Link
If you can’t control heating with your Google Nest thermostat or the app, the Heat Link and thermostat may be disconnected. You can press the Heat Link’s button to turn heating on and off until the connection is restored. Press the button on your Heat Link to manually turn on heating:

• Nest Thermostat E: Press Heat Link’s button twice
• 3rd and 2nd gen Nest Learning Thermostat: Press Heat Link’s button once

Press the button again to manually turn off heating (press twice for Nest Thermostat E).

Keep in mind:

• Manual heat mode will continue to heat your home until you manually turn it off, even if you reconnect your thermostat.
• If your thermostat controls hot water, your hot water will also turn on when you turn on manual heating..
• When manual heating is on, your system won’t follow your regular schedule. It also won’t be able to follow other thermostat settings. For example, if you have an OpenTherm compatible system, the manual heating mode will not allow your boiler to modulate water temperature.
• You can only turn on manual heating if Heat Link is disconnected from your thermostat. Otherwise, use your thermostat or the app to control heating.

How to tell if manual heating is on

Troubleshooting Heat Link’s connection

On your thermostat, you’ll see an error beginning with the letter H when Heat Link is disconnected. In order to control your system with your Nest thermostat or the app, you’ll need to troubleshoot the connection.

 

How to turn manual heating off

If your Heat Link is not connected to your thermostat, you can always press Heat Link’s button once (twice for Nest Thermostat E) to turn off manual heating.
If your Heat Link has reconnected to your thermostat, you have three options:

• Press your Heat Link’s button once (twice for Nest Thermostat E).
• Use your thermostat:
  • The thermostat display will say MANUAL to confirm that manual heating is on.
  • Turn the thermostat ring. A message will appear asking you to confirm that you want to turn off manual heat mode. Select Turn off.
• Use the Nest app:
  • On the Nest app home screen, select your thermostat.
  • The thermostat screen will say MANUAL. Tap MANUAL to end manual heating.

As long as your Heat Link is connected to your thermostat, turning off manual heating will return your thermostat to its usual temperature and hot water schedule.

Note: Once Heat Link has been reconnected to your thermostat, you won’t be able to turn on manual heating again unless it loses the connection.

Nest thermostat Heat Link User Manual

References

• User Manual