BoilerFaultCodesThe 5 most common faults
Your boiler has detected that the water pressure in your heating system is either too low or too high for it to operate safely.
Locate the filling loop (usually a silver braided hose with one or two valves) underneath the boiler.Open the valve(s) slowly to allow water into the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close the valve(s) tightly to stop the flow of water.
Your boiler has detected that the water inside it has become dangerously hot and has shut down to prevent damage or overheating.
Full guide for Alarm high limit thermostatYour boiler has detected that one of its internal monitoring components is providing an incorrect reading, so it has shut down to ensure your safety.
Full guide for Fault sensorsYour boiler has stopped working because it cannot light itself, which usually indicates an issue with the gas flow, the air ventilation, or the electrical connection.
Full guide for Red led fixedYour boiler has detected a brief, minor glitch and is attempting to sort itself out automatically.
Wait five minutes to see if the boiler resumes normal operation automatically.If it persists, turn the boiler off at the fused spur or mains switch.Wait 30 seconds before turning the power back on to force a system reset.
on the Vokera Excel
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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