Fault 15 Code 30 — Outside temperature sensor not connected or recognised

What does Fault 15 30 mean?

The Worcester Bosch Greenstar CDi Boiler displays Fault 15 with code 30, indicating that the outside temperature sensor is either not connected or not recognized by the system, making outside temperature data unavailable.

• Outside temperature sensor is disconnected
• Break in the sensor's connection wiring
• Faulty outside temperature sensor

Click steps to track your progress.

1. 1

   Check the wiring connections to the outside temperature sensor for any looseness or damage.

2. 2

   Ensure the sensor itself is properly installed and not obstructed.

3. 3

   If an interruption is found, remedy it by reconnecting or repairing the wire. If the fault persists, contact a qualified heating engineer.