BoilerFaultCodesThe 6 most common faults
Your boiler has lost its flame while running or failed to stay lit, so it has shut down for safety.
Check if other gas appliances (like a hob) are working to confirm gas supplyEnsure your gas meter has credit if you use a pre-payment meterPress and hold the 'R' (Reset) button for a few seconds to restart the boiler
Your boiler is failing to light the gas, which means your heating and hot water will not work until the system is reset or repaired.
Check if your gas supply is turned on at the meterIf you have a prepaid gas meter, check that you have enough creditPress and hold the RESET button for a few seconds to restart the ignition sequence
Your boiler has become too hot and has automatically shut down to prevent damage or dangerous operation.
Check that all radiator valves are fully open to allow water to circulateEnsure there is enough water pressure in the system (usually between 1.0 and 1.5 bar on the gauge)Press and hold the reset button for a few seconds to restart the boiler
Your boiler has been manually reset too many times in a short period and has now locked itself out for safety.
Turn the boiler power off at the fused spur switch (the wall switch near the boiler).Wait for at least 30 seconds.Turn the power back on; this should clear the reset limit lockout.
Your boiler has detected that the water pressure is too low, preventing it from heating up safely.
Locate the filling loop (usually a silver braided hose underneath the boiler).Open the valves slowly to allow water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close the valves tightly and press the Reset button on the boiler control panel.
One of the buttons on the boiler's control panel is physically jammed or stuck in the pressed position, which is preventing the system from operating correctly.
Carefully inspect the buttons on the front control panel.Gently press and release each button to see if one feels stiff or stuck.Wipe the area with a dry cloth to remove any sticky residue that might be holding the button down.
on the Alpha Evoke 10 / 18
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 Alpha 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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