Guide

2019 | Condential and Proprietary | Do not distribute
When a C wire may be needed
Heat pump cools when it's
supposed to be heating
Solve it:
There may be a few reasons why the thermostat
won’t turn on. If you see a blinking red or green light,
or no light at all there could be a power issue or the
thermostat may have frozen during a soware
update. There also could be a prompt on the
thermostat or the app regarding Wiring Repo.
All the answers are right here.
Solve it:
Even though most Nest thermostats won’t need
the C wire, there are instances where they can
help. If you’re hearing strange noises from the
system, heating or cooling or system fan won’t
turn o, or are seeing delayed messages on the
screen you may need a C wire. Nest Pros should be
using wire creation products like Fast-Stat or
Venstar to add a C wire. Visit here for information.
Solve it:
If the heating and cooling system is a heat pump
and it blows cool air when the Nest thermostat is
in heating mode (the background on the display
is orange), you may need to adjust the heat
pump O/B wire orientation seings on the Nest
Learning Thermostat. Here’s how.
Solve it:
Furnace Heads-Up can let you know when the
Nest thermostat has detected a problem with
the customer’s forced air heating system. To
troubleshoot, run a quick system test as soon as
you can to conrm there’s an issue. For fuher
assistance visit here.
Here are some common issues that may arise with Nest thermostats.
Furnace Heads-Up
Thermostat won’t turn on
Troubleshooting tips