General maintenance
What You Hear
"THE SENSORS HAVE
FAILED IN THE [ROOM
NAME]. REPLACE NEST
PROTECT NOW." Single
chirp every 60 seconds.
"THE BATTERY IS LOW
IN THE [ROOM NAME].
REPLACE THE BATTERY
SOON."
"THE BATTERY IS LOW
IN THE [ROOM NAME].
REPLACE THE BATTERY
NOW." Single chirp every
60 seconds.
"NEST PROTECT CAN'T
SOUND THE ALARM IN THE
[ROOM NAME]." Two chirps
every 60 seconds.
"NEST PROTECT HAS
EXPIRED. REPLACE NEST
PROTECT NOW." Two
chirps every 60 seconds.
WARNING
• Use only batteries specified by Google. Use of
a different battery model will have a detrimental
effect on the smoke alarm operation.
• Never remove the batteries to stop an unwanted
alarm (caused by cooking smoke, etc.)
Removing the batteries disables the alarm so it
cannot sense smoke or carbon monoxide (CO).
Instead open a window or fan the smoke away
from the unit.
What You See
YELLOW pulses.
YELLOW pulses.
YELLOW pulses.
YELLOW pulses.
YELLOW pulses.
• The batteries cannot work until you install the
• Once Nest Protect has expired you'll no longer
What It Means
Nest Protect has tested
its sensors, and there
is a problem.
Low battery.
Low battery.
There's a problem with
the horn of Nest Protect.
Nest Protect has expired
and reached the end of
its life.
batteries in the correct position (Match + to +
and - to -).
be protected from smoke or CO if you don't
replace it.
What To Do
Clean according to
instructions on p.16. If the
problem persists, replace
Nest Protect.
Change Nest Protect's
batteries soon.
Change Nest Protect's
batteries now.
Replace Nest Protect now.
Replace Nest Protect now.
17