Geo
Remote Sensor Not Recognized
Thermostat does not detect or use the connected remote room sensor; readings only show internal sensor.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Remote sensor wired to wrong terminals, Unsupported sensor type, Open sensor wiring, Remote sensor disabled in Geo settings
How to Fix / Troubleshooting
Safety first: Turn off HVAC power at the breaker before working on sensor wiring.
- Step 1 – Verify sensor wiring: Confirm the remote sensor is connected to the correct Geo sensor terminals (e.g., S1/S2 or RS+/RS−) as specified in the installation manual.
- Step 2 – Enable sensor in settings: In the thermostat menu, go to Sensors and ensure the remote sensor is enabled and selected as the primary or averaging sensor as desired.
- Step 3 – Continuity test: With power off and sensor disconnected, test continuity of the sensor wires. Repair or replace the cable if open.
- Step 4 – Confirm sensor compatibility: Make sure the remote sensor is a Geo‑approved model. Incompatible sensors may not be recognized.
- Step 5 – Replace sensor: If wiring and settings are correct but the sensor is still not detected, replace the remote sensor module.
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Repair Difficulty
Medium
3/5
Required Part
Geo Remote Room Sensor
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