Your doorbell chime doesn't ring or it sounds weak 

1. Check the breaker or power outlet

Make sure that the fuse or breaker switch that supplies power to Hello is on. If you’re using the Indoor Power Adapter (available in the US only), check that the outlet is receiving power by plugging in another electronic device like a lamp. If the outlet is controlled by a switch, make sure that it’s set to on as well.

2. Check the voltage in the Nest app 

Even if your transformer meets Nest Hello requirements, the actual voltage reaching the chime and doorbell may be too low or too high. You can check the voltage in the Nest app.

  1. Tap Settings Nest settings icon on the app home screen.
  2. Select Nest Hello.
  3. Scroll down and tap Technical Info.
  4. Check that the AC voltage is between 14 and 30 volts AC (in North America) or between 10.8 and 30 volts AC (in Europe).
  5. If it’s not, you may need to upgrade your transformer. Contact a Nest Pro for installation help. You can also install the Indoor Power Adapter, which lets you plug Hello into an indoor power outlet.

3. Check chime settings in the app 

Your current settings may be preventing the chime from ringing. For example:

  • Someone who shares access to your Nest home with the app may have turned the chime off, or changed the chime duration.
  • If you have a mechanical chime (moving parts that make the sound), the chime duration option should be turned off. This setting is for electronic or digital chimes only.

Here’s how to check chime settings in the app:

  1. Tap Settings Nest settings icon on the app home screen.
  2. Select Nest Hello.
  3. If Quiet time is on, tap it to reveal the switch. Tap the switch to turn it off.
  4. Next, check the chime duration. Tap Chime duration in the Hello settings menu.
    • If you have a mechanical chime that has moving parts, this option should be set to Off.
    • If you have an electronic chime and it’s set too short, your chime may not make any sound or only make part of the chime sound. Try setting it to a longer duration.

4. Check the chime wires 

Mechanical chimes 

If you have a mechanical chime that has moving parts to make the “ding dong” sound, the connector may be interfering with the movement of the striker or the sounding bar that the striker hits.

First, test with the chime cover off:

  1. Remove your chime’s cover.
  2. Press Hello’s button to ring the chime.

If the chime sounds good with the cover off, the cover may be pressing on some wires or the connector and interfering with the moving parts.

  1. Bend the wires or use some tape to hold them out of the way.
  2. Re-test with the cover on.
  3. If it still sounds bad, try mounting the connector outside of your chime box with some double backed tape.
  4. Re-test with the cover on.

If the chime sounds bad or doesn’t sound with the cover off:

  1. Have someone else press Hello’s button while you look at the chime. You might notice something that’s interfering with the movement.
  2. Bend the wires or use some tape to hold them out of the way if needed.You can also try mounting the connector outside of your chime box with some double backed tape.
  3. Re-test with the cover off.
  4. If the cover off test sounded good, re-test with the cover on to make sure nothing moved when you put the chime cover back on.
  5. Double check that the wires are fully inserted into the chime connector and have a solid connection to your chime. Re-tighten any screws holding wires with a screwdriver.
  6. Corrosion and grime can affect the wire contact. Check each wire end to make sure they’re all clean and corrosion-free. If not, trim off the corroded end and strip the casing to expose fresh wire.
  7. Make sure that any exposed wires, where the bare metal is showing, aren’t touching each other.
  8. Make sure you’ve installed the wires correctly according to the app instructions.

Electronic or digital chimes 

If you have an electronic or digital chime that doesn’t have moving parts.

Make sure the connector is properly installed:

  1. Double check that the wires are fully inserted into the chime connector and have a solid connection to your chime. Re-tighten any screws holding wires with a screwdriver.
  2. Make sure that any exposed wires, where the bare metal is showing, aren’t touching each other.
  3. Make sure you’ve installed the wires correctly according to the app instructions.
  4. If your chime has more than 3 wires, you should contact a Nest Pro for installation help.

5. Check the doorbell wires 

It’s possible that a wire came loose when you put Hello on the backplate, or that the wires aren’t tight enough. Make sure the wires connected to Hello are securely installed.

  1. Remove Hello from the backplate using the release tool that was included in the box or a thumbtack. Insert it into the hole at the bottom of Hello and pull it off the base.
  2. Re-tighten the screws holding the wires with a screwdriver.
  3. Test the chime by pressing Hello’s button.

6. Make sure your doorbell transformer is compatible 

Your transformer needs to meet specific power requirements (16 - 24 V AC, and at least 10 VA in North America or 12 - 24 V AC, and at least 8 VA in Europe) to be compatible with Nest Hello. If you didn’t check it before installing Hello, or if you’re not sure about your transformer’s power rating, you can contact a Nest Pro installer or an electrician or follow the instructions in the following article:

How to check your transformer’s voltage >

Important: Some doorbell systems may not be able to deliver enough power to the chime after Nest Hello installation even if the transformer is rated between 16 to 24 V AC and 10 VA in North America or 12 to 24 V AC and 8 VA in Europe. If you have completed the other troubleshooting steps in this article, your transformer may need to be upgraded or replaced. You can have a local Nest Pro do it for you. 

7. If the weather is very hot or cold 

If it’s extremely hot or cold outside, or if your Hello is installed in direct sunlight, the chime (and video or Wi-Fi) may turn off automatically to help protect Hello’s internal circuitry from excessive heat. The chime will automatically turn on again when Hello’s internal temperature returns to normal operating range. However, as long as Hello isn’t disconnected from Wi-Fi and offline in the app, you can still get a notification on your phone when someone rings the doorbell.
Was this helpful?
How can we improve it?