F1 error; unit may run but temperature control is inaccurate or erratic

Safety first: Turn off power before removing the indoor unit cover.

• 1. Locate T2 sensor: The room sensor is usually near the air intake grille on the indoor unit. Confirm it is properly clipped in place and not dangling inside the casing.
• 2. Inspect wiring: Trace the sensor leads back to the PCB and ensure the connector is firmly seated.
• 3. Measure resistance: Disconnect the sensor and measure its resistance at room temperature. Compare with Camry’s NTC chart. Replace if readings are out of range.
• 4. Avoid heat sources: Ensure the sensor area is not directly exposed to sunlight, lamps, or other heat sources that can cause false readings.
• 5. Replace sensor if needed: Install a genuine Camry replacement sensor and route the wiring away from high-voltage lines to avoid interference.

Result: After replacement, clear the error by power cycling and verify stable temperature control.