What does 900 mean?

This error indicates a short or open circuit in the temperature sensor for Zone 2's water outlet.

• Faulty temperature sensor
• Loose or damaged wiring to the sensor

Click steps to track your progress.

1. 1

   Check the wiring connected to the Zone 2 water-out temperature sensor for looseness or damage.

2. 2

   Verify the sensor is correctly positioned and functioning.

3. 3

   If the sensor is defective, it must be replaced.

4. 4

   A qualified technician should be consulted for repair.