Worcester Bosch · Boilers
There was insufficient ionisation current detected by the system during the burning phase, or a general loss of ionisation signal. This indicates the flame is not consistently detected.
Click steps to track your progress.
Ensure your gas supply is active and stable.
Reset the boiler by pressing the reset button on the control panel.
If the problem persists, contact a Gas Safe registered engineer, as this requires checking gas and ignition components.