Display 899 — Zone 1 Water-Out Temperature Sensor Error

What does 899 mean?

This error indicates a short or open circuit in the temperature sensor for Zone 1's water outlet.

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

Click steps to track your progress.

1. 1

   Inspect the wiring to the Zone 1 water-out temperature sensor for any damage or loose connections.

2. 2

   Ensure the sensor is properly installed and not submerged in unintended conditions.

3. 3

   If the sensor is faulty, it will need to be replaced.

4. 4

   Contact a service professional for diagnosis and repair.