BoilerFaultCodesThe 6 most common faults
Your boiler has failed to ignite or stay lit, causing it to shut down as a safety precaution.
Check that your gas prepayment meter has credit (if applicable).Ensure other gas appliances in your home, like a hob, are working correctly.Press the Reset button on the boiler control panel once to clear the fault.
Liquid waste produced by your boiler cannot drain away, which has caused the system to shut down to prevent damage.
Locate the plastic pipe leading away from the boiler to a drain.If the pipe runs outside, check if it is frozen and pour warm (not boiling) water over the icy section.Check for any visible blockages or kinks in the external drainage pipe.Restart the boiler once the blockage is cleared.
Your boiler has detected that fumes are not being expelled correctly or air is not being taken in properly, causing it to shut down for safety.
Check the external flue pipe (white plastic pipe) for any outside obstructions like bird nests, leaves, or debris.Ensure the flue terminal is not covered by garden furniture, building materials, or foliage.If it is snowing, check that the flue terminal is not buried or blocked by ice buildup.
Your boiler has shut down because it has reached an unsafe temperature and needs to cool down before it can be reset.
Check that all radiator valves are fully open to allow water to circulate.Ensure there is enough water pressure in the system (typically 1.0 to 1.5 bar).Press the reset button or turn the mode selector to 'off/reset' and then back to 'on' once the boiler has cooled.
Your boiler has detected that the water pressure is too low, meaning there is not enough water in the system to operate safely.
Locate the filling loop (the flexible silver hose) underneath or near the boiler.Slowly open the one or two taps on the loop until you hear water flowing.Watch the pressure gauge and close the taps firmly once it reaches between 1.0 and 1.5 bar.
Your boiler has detected a flame when there shouldn't be one, which is causing the system to shut down for safety.
Full guide for A30on the Vokera Vibe MAX S
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.
Affiliate links. We may earn a commission at no extra cost to you.