Quick Troubleshooting Reference Guide
Symptom
What’s going on
Steps to fix
Nest doesn’t turn
on after
installation.
Red LED blinking on
front.
The internal battery is low and
needs to charge.
If you leave it where it is, it will slowly charge and
eventually turn on. This can take an hour or two.
If you have a mini-USB cable and wall charger you
can charge it more quickly over USB.
You need to restart
or reset the
settings on the
thermostat.
You may need to reset the
settings if:
•
You need to restart the
thermostat.
•
Reset Nest Sense
features
•
To help with
troubleshooting Wi-Fi
issues.
•
The thermostat needs to
be reconfigured.
Follow these steps to access the RESET settings:
1. Press the ring to bring up the menu.
2. Turn the ring and select SETTINGS.
3. Turn the ring and select RESET.
4. Select one of the following options:
CANCEL, RESTART, SCHEDULE, AUTO-
AWAY, NETWORK, TO DEFAULTS.
Nest doesn’t turn
on after
installation.
No LED blinking on
the front of the
unit.
The power was never turned
back on.
Nest doesn’t turn on until it senses both the that
wires are hooked up and power is coming to those
wires.
This may happen if you’ve forgotten to turn the
power back on to the HVAC system or if you
turned the power back on, but there was a fuze or
breaker blown during the installation process.
Use normal electrical troubleshooting techniques
to isolate the issue to either the fuse/breaker box
or a fuse on the HVAC controller board.
Unit seems to be
running backwards.
If it is heating when it is
supposed to be cooling and visa
versa, the orientation of the
heat pump is probably
incorrect.
Follow these steps to change the heat pump
orientation:
1. Press the ring to bring up the menu.
2. Turn the ring and select SETTINGS.
3. Turn the ring and select ADVANCED.
4. Turn the ring and select HEAT PUMP.
Fan doesn’t come
on
Either there is an issue with the
air handler or with Nest.
First, check the wiring to make sure the wires are
in the right place and the wire tips are straight
and fully inserted into the connectors.
If that doesn’t work, pull out the Rh and the G
wires. Carefully hold them together with the
copper ends touching for 10-20 seconds.
If the fan turns on there may be a hardware issue
with the device, so please contact us.
If the fan did not turn on, there is an issue with
the heating and cooling system unrelated to Nest.
Nest Learning Thermostat installation & configuration guide
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