E15 — Gas valve command fault

What does E15 mean?

The boiler's main control board (PCB) is unable to correctly command or communicate with the gas valve.

• Loose or faulty cable connection between the PCB and the gas valve.
• Problem with the gas valve itself.
• Faulty main control board (PCB).

Click steps to track your progress.

1. 1

   Press the 'Reset' button on the boiler for 1-3 seconds to attempt a restart.

2. 2

   Ensure the main gas supply to your property is open and other gas appliances are working.

3. 3

   If the error re-occurs regularly, a qualified technician should inspect all PCB connections and the gas valve wiring.