Display 903 — Water Outlet (Backup Heater) Temperature Sensor Error

Was bedeutet 903 ?

This error indicates a problem with the temperature sensor for the water outlet of the backup heater.

• Faulty temperature sensor
• Wiring issue to the sensor

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the wiring connected to the backup heater's water outlet temperature sensor for secure connections and damage.

2. 2

   Ensure the sensor is correctly placed and functioning.

3. 3

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

4. 4

   Contact a service professional for diagnosis and repair.