Fault 10 — Outdoor sensor error

What does 10 mean?

The system detects an issue with the outdoor temperature sensor, meaning it cannot accurately measure the ambient outdoor temperature.

• Faulty outdoor sensor.
• Loose or corroded wiring connections to the sensor.
• Sensor obstructed or damaged.

Click steps to track your progress.

1. 1

   Attempt a manual fault reset via the info key on the unit's display.

2. 2

   Power cycle the heat pump system by turning it off at the main breaker for 60 seconds, then restoring power.

3. 3

   Visually inspect the outdoor sensor for any damage or obstructions (e.g., leaves, snow) and clear them.

4. 4

   Check the sensor's wiring connections (if safely accessible with power off) for looseness or damage.

5. 5

   If the issue persists, contact a qualified technician to test or replace the outdoor sensor.