Symptoms
- App can't find the thermostat during setup
- Pairing gets stuck at a specific step
- QR code or setup code isn't accepted
Likely causes
- CommonBluetooth not enabled on the phoneMany thermostats use Bluetooth for the initial pairing step before switching to Wi-Fi.
- CommonPhone too far from the thermostat during pairingBluetooth range is short, especially through walls.
- PossibleOutdated app versionAn old app version may not support the thermostat's current firmware.
- PossibleThermostat stuck in a partial setup stateA failed previous attempt can leave the thermostat in an odd state.
- Less commonAccount or region mismatchRarely, an account region setting can block pairing.
What to do
- Enable Bluetooth on your phone and stand within a few feet of the thermostat during setup.
- Update the app to the latest version from your phone's app store before trying again.
- Restart the thermostat by removing it from its base or cycling batteries for 30 seconds to clear any stuck setup state.
- Restart your phone as well, since this clears many temporary Bluetooth glitches.
- If a QR or setup code isn't accepted, try entering the model or serial number manually instead.
- As a last step, uninstall and reinstall the app, then attempt setup again from scratch.
Tools and parts
- Smartphone with Bluetooth enabled
When to call a pro
Contact the manufacturer's support if pairing still fails after restarting both devices and updating the app.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.