What does my fault code mean?
- Flashing L AND 1 Flow Temperature Overheat or No Water FlowEnsure that all radiator valves are open Check that the water pressure to the boiler is at 1 to 1.5 BAR. View our video on how to top up your boiler pressure here.Reset the boilerIf this does not fix the problem, please contact us 
- Flashing L AND 2 Flame Loss or Ignition Lockout- Reset the boiler 
- If your gas meter is pay-as-you-go, check there is credit available 
- Check other gas powered items in your home, if these are also not working, you should contact a local gas engineer 
- Check that the yellow gas isolation valve under the boiler hasn't been turned off. If it is on, the handle/knob will be in pointing in the direction of the pipe. 
- If the boiler is making a gurgling/gargling noise whilst trying to fire, please contact your installer as there may be a blockage 
- If this does not fix the problem, call us quoting Error Code L2 
 
- Flashing L AND 3 No Water Flow- Check that the water pressure to the boiler is at 1 to 1.5 BAR. 
- Check that the yellow gas isolation valve under the boiler hasn't been turned off. If it is on, the handle/knob will be in pointing in the direction of the pipe 
- Turn the boiler off and bleed/let out the air of your radiatiors. Ensure the boiler pressur is still at 1 to 1.5 BAR and turn the boiler back on 
- Press the reset button 
- If this does not fix the problem, please contact us quoting error code L3 
 View our video on how to top up your boiler pressure: <iframe width="560" height="315" src="https://www.youtube.com/embed/13g6nRKmjjU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> 
- Flashing L AND 5- The boiler has been reset too many times in 15 minutes. 
- Turn the power to the boiler on and off again to reset 
 
- Flashing L AND 6 False Flame Lockout- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code L6 as this will require a visit from an engineer. 
 
- Flashing F AND 1 Low Pressure- Water pressure is too low in the system and will require topping up to between 1 and 1.5 BAR 
 View our video on how to top up your boiler pressure: <iframe width="560" height="315" src="https://www.youtube.com/embed/13g6nRKmjjU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> 
- Flashing F AND 2 Flame Loss / Ignition Lockout- Reset the boiler 
- If your gas meter is pay-as-you-go, check there is credit available 
- Check other gas powered items in your home, if these are also not working, you should contact a local gas engineer 
- Check that the yellow gas isolation valve under the boiler hasn't been turned off. If it is on, the handle/knob will be in pointing in the direction of the pipe. 
- If the boiler is making a gurgling/gargling noise whilst trying to fire, please contact your installer as there may be a blockage 
- If this does not fix the problem, call us quoting Error Code F2 
 
- Flashing F AND 3 Fan Fault- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code F3 as this will require a visit from an engineer. 
 
- Flashing F AND 4 Flow Thermistor- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code F4 as this will require a visit from an engineer. 
 
- Flashing F AND 5 Return Thermistor- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code F5 as this will require a visit from an engineer. 
 
- Flashing F AND 6 Outside Sensor Fault- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code F6 as this will require a visit from an engineer. 
 
- Flashing F AND 7 Low Mains Volume- Voltage to the boiler may be too low 
- Contact a local electrician to inspect the electrics of your property 
 
- Flashing F AND 0 No Water Flow Thermistor- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code F0 as this will require a visit from an engineer. 
 
- Flashing C AND 2 BCC Chip- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code C2 as this will require a visit from an engineer. 
 
- Flashing C AND 0 BCC Activation Fault- Reset the boiler 
- If this does not fix the problem, please contact us quoting error code C0 as this will require a visit from an engineer. 
 










