BoilerFaultCodesThe 4 most common faults
Your boiler has paused because the water pressure is likely too low or it is struggling to clear air from the system.
Check the pressure gauge on the front of the boiler.If the needle is below 1 bar, use the filling loop valves underneath to top up the system to 1.5 bar.Ensure the black plastic taps are closed tight after filling and restart the boiler.
Your boiler has shut down and locked itself out because it has detected a safety issue with the airflow, temperature sensors, or internal pressure.
Turn the mode selector dial to the 'OFF (0)' position.Wait for at least 2 minutes for the system to reset.Turn the dial back to the 'Hot Water/Heating' position and see if the light clears.
Your boiler has safety-locked itself because it has detected an issue with the sensors, fan, or internal water pressure.
Turn the mode selector dial to the 'OFF' (0) position.Wait for at least 2 minutes.Turn the dial back to your desired 'Heating' or 'Hot Water' setting to see if the system restarts.
Your boiler has detected a sensor problem, so it is limiting your hot water to a constant temperature to prevent it from getting too hot.
Full guide for Yellow LED solidon the Vokera Sabre 35HE
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Vokera shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
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