Heatline Combi Boiler error code F68

Hi Guys,

My newly bought and installed Heatline combi boiler is displaying a F68 error code from last few days. I have not faced this issue earlier. In order to get rid of, I have restarted the boiler many times but no success. Unfortunately, the user manual has been misplaced. So, what else should I do? Please give your opinions



Hi John, according to the Heatline boiler’s user guide an error code F68 means “fluctuation of the flame signal”. You can fix this issue by doing the following things:

  • Firstly, try verifying a return gas circuit
  • Secondly, verify & observe the spark picture while verifying the settings of CO
  • Afterward, verify the connections of igniter unit  
  • Finally, verify the current condition of the electrode

I hope that this information will you in fixing the problem. In case the problem persists, call a boiler engineer.