Thermostat shows outdoor temperature even though no outdoor sensor is installed, and the value is clearly wrong.

Safety first: Turn off HVAC power at the breaker before adjusting wiring if needed.

• Step 1 – Check sensor settings: In the thermostat menu, navigate to Sensors and disable any outdoor sensor option if no physical sensor is installed.
• Step 2 – Inspect sensor terminals: Ensure that no stray wires or jumpers are connected to the outdoor sensor terminals on the Geo wall plate.
• Step 3 – Firmware update: Update the thermostat firmware via the Geo app to correct any known sensor detection issues.
• Step 4 – Monitor readings: After disabling the feature and updating firmware, verify that the outdoor temperature display is removed or shows data only from a valid source.