Fault 30 (Detailed 140) — Burner blocked due to boiler water sensor short circuit

What does 30 mean?

The boiler's burner is blocked because there is a short circuit detected in the boiler water temperature sensor. This sensor helps the boiler regulate temperature, and a short circuit means it's not reading correctly.

• Short circuit on boiler water temperature sensor

Click steps to track your progress.

1. 1

   Check the boiler water temperature sensor for any visible damage or loose wiring.

2. 2

   Ensure all connections to the boiler water temperature sensor are secure and free from moisture.

3. 3

   Press the reset button R on your boiler.

4. 4

   If the fault persists, contact a qualified service technician to inspect or replace the sensor.