Lennox thermostat shows E460 indoor coil sensor out of range; system may shut down or run with limited capacity.

Safety: Turn off power to the indoor unit before accessing the coil compartment.

• 1. Locate coil sensor: The sensor is usually clipped to the refrigerant tubing entering or leaving the evaporator coil.
• 2. Check attachment: Ensure the sensor is firmly clipped and making good contact with the copper tube. Reattach or secure with thermal paste and a cable tie if loose.
• 3. Inspect wiring: Look for nicks, cuts, or pinched sections in the sensor leads. Repair or replace as needed.
• 4. Replace sensor: If the sensor is cracked or readings are clearly wrong, install a new Lennox coil temperature sensor.

Note: This sensor helps prevent freeze-up and overheating; do not operate the system with it disconnected.