Guide
2019 | Condential and Proprietary | Do not distribute
Solve it:
This light indicates that Hello isn’t geing enough power. It 
will continue to work as a standard doorbell but will likely 
turn o video stream to preserve power. Check the voltage, 
you may need to upgrade the transformer the chime’s wires 
are connected to.
Chime won’t stop ringing
There is a blinking 
yellow light
Take a look at how to solve some of the most common issues that can arise with Nest Hello.
Solve it:
Electronic chimes might ring unexpectedly. At a rst glance, it 
might seem like this is due to a faulty chime as a small amount 
of voltage can be present. This is normal as there’s a 3 ohm 
resistance in series in the puck during steady state.
The leading cause is mis-wiring, especially with more complex 
chimes that use 3 wires. Note if chimes are connected to 
intercoms, gates that open and close, or other devices. Return 
to the app and re-wire (Step 8).
Troubleshooting tips 
Solve it:
Nest Hello requires 16-24V. Some homes, especially older 
homes, may require the installation of a transformer. It’s 
recommended that Nest Pros have a Voltage Meter and 
Transformer available to allow for a seamless install. Nest Hello 
replaces your existing wired doorbell. Customers can check 
compatibility at nest.com/works.
Installing a transformer










