E134 — Gas valve open, no gas detected

What does E134 mean?

The boiler's gas valve opened, but no flame was detected within the allowed time, indicating a lack of gas or an ignition issue.

• Insufficient or interrupted gas supply pressure.
• Faulty spark electrode or sensing electrode, or their cables.
• Faulty main control board (PCB).
• Flue gas recirculation.

Click steps to track your progress.

1. 1

   Press the 'Reset' button on the boiler for 1-3 seconds.

2. 2

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

3. 3

   Turn off the main power supply to the boiler, wait 30 seconds, then turn it back on.

4. 4

   If the error persists, a qualified technician should check the gas pressure, ignition electrodes, and wiring.