If your thermostat has jumpers remove them but save them along with your old thermostat.
Nest thermostat e installation troubleshooting.
The nest apps will show a question mark over the thermostat when the nest servers can t communicate with the device.
If you ve successfully installed your nest thermostat but a blinking red light appears after you ve been using it regularly for some time there may be a problem.
Pull the silver ring of your thermostat gently away from the wall.
If you have rh and rc wires you have a dual transformer system.
The nest thermostat doesn t support a multi speed fan and.
Get a c wire or install an adapter if you want a nest.
Pull off the nest thermostat display.
Your customer is seeing a question mark on their nest when they use one of the nest apps.
Check that all connectors that have wires are down see picture.
Installation guide 7 pages 0 5mb note.
Use normal electrical troubleshooting techniques to isolate the issue to either the fuse breaker box or a fuse on the hvac controller board.
Your nest thermostat has detected a g 2 fan wire in the y 2 connector and an emergency heat wire in the connector.
Installation guide 6 pages 0 3mb welcome guide 10 pages 1 7mb 1st generation nest thermostat.
The nest thermostat e is not compatible with dual transformer systems but you may be able to use the 3rd generation nest.
Installation guide 11 pages 0 5mb 3rd generation nest thermostat.
The nest app will guide you through thermostat installation but here are some more detailed instructions to walk you through everything you need to do to install your nest thermostat on the wall.
Installation guide 12 pages 0 3mb welcome guide 2 pages 0 6mb 2nd generation nest thermostat.
These illustrations use the 3rd gen nest learning thermostat but the steps are the same for the nest thermostat e.
Run new wires between your furnace and your thermostat hire a pro or diy with a new spool of thermostat wire grab a venstar add a wire which adds a 5th wire to an existing 4 wire setup.
If needed re insert wires so that the connector button stays fully pressed down.
The nest thermostat should pop off the base.