Google Nest Hello Manual page 10

Troubleshooting tips
Take a look at how to solve some of the most common issues that can arise with Nest Hello.
Solve it:
Chime won't stop ringing
Electronic chimes might ring unexpectedly. At a first 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).
Installing a transformer
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.
There is a blinking
yellow light
Solve it:
This light indicates that Hello isn't getting enough power. It
will continue to work as a standard doorbell but will likely
turn off video stream to preserve power. Check the voltage,
you may need to upgrade the transformer the chime's wires
are connected to.
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