2 pulses (blue light) — Flue pressure switch fault

What does 2 pulses mean?

The blue indicator light shows 2 pulses, signifying a fault with the flue pressure switch. This often means there's an issue with the flue's ability to clear combustion products.

• A blockage in the flue system, preventing proper air movement or exhaust

Click steps to track your progress.

1. 1

   Reset the boiler using the user control panel.

2. 2

   Visually inspect the flue terminal outside your property for any obstructions like debris, bird nests, or ice.

3. 3

   Ensure that nothing is covering or blocking the air intake or exhaust parts of the flue.

4. 4

   If the fault continues, contact a qualified service engineer to investigate the flue system and pressure switch.