3rd-gen Heat Links have the pairing code on the bottom.

The code is a combination of six letters and numbers.

In some cases, you may need to re-enter the Heat Link’s pairing code on your Nest Learning Thermostat. For complete instructions, please see How to restart the Heat Link or reset it to factory defaults. Try resetting the Heat Link and then reconnecting it to your thermostat. Turn off the power to your system at the fuse box before exposing or adjusting any wiring. Reposition it if possible.Ĭaution: It’s important to protect you, your system and your thermostat. Make sure that the Heat Link is installed at least 30 cm away from your boiler or heating system. The wireless thermostat connection can be blocked if your Heat Link is installed too close to your boiler or hot water tank. Sometimes moving your thermostat a few centimetres can make a big difference.

If the test fails, move your thermostat again and re-test.

On your thermostat go to Settings Equipment.

Large objects made of metal or other dense materials can block wireless signals.

Check that there isn’t anything between your Heat Link and thermostat like a large mirror, or refrigerator.

If your thermostat is mounted on a stand (not the wall), try moving it a bit closer to where your Heat Link is installed.

Your thermostat may be too far away from the Heat Link or there may be something interfering with the wireless Thread connection. Move your thermostat and test the connection If the status light is yellow, continue to step 2.

The status light will turn green if it re-connects to your thermostat.

Release the button and wait for your Heat Link to restart.

Hold down the Heat Link’s button until its light turns off.

In addition, the Heat Link's status light will be yellow when it’s disconnected from your thermostat. If you don’t see an error code on your thermostat, please search our library of help articles for help with other issues.Īn H1 or H71 error message says 'Nest can’t connect to Heat Link and won’t be able to control your heating'. Select your thermostat below, then select the code that you see on your thermostat for specific troubleshooting steps to fix the issue.

Note: Press the Heat Link's button again to turn off heating (press twice for Nest Thermostat E). If your thermostat controls your hot water tank, your hot water will also turn on. This way, you can stay comfortable while you troubleshoot connection problems. The heating light will turn green to confirm that the heating has been turned on.

3rd and 2nd gen Google Nest Learning Thermostat: Press Heat Link’s button once.

Google Nest Thermostat E: Press Heat Link’s button twice.

Press the button on your Heat Link to manually turn on heating: If you see a message on your thermostat that has a code beginning with H, N or T followed by a number, here are some steps that you can take to help fix the issue.

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