BoilerFaultCodesThe 6 most common faults
01
02 High Engineer
Your boiler has detected that it is overheating and has automatically shut down to prevent internal damage.
Full guide for 0202
03 High Engineer
Your boiler is struggling to clear exhaust gases properly, so it has safely shut itself down to prevent any risk of fumes entering your home.
Full guide for 0303
04 High Engineer
Your boiler has detected that it is overheating and has shut down as a safety precaution to prevent damage.
Full guide for 0404
01 High Engineer
Your boiler has detected an internal communication error with its main control board and has safely shut itself down to prevent further issues.
Full guide for 0105
06 High Engineer
Your boiler is struggling to accurately measure the temperature of the water used for your taps and shower, so it has turned off the hot water supply for safety.
Full guide for 0606
08 High Engineer
Your boiler has stopped working because it cannot correctly read the temperature of the incoming water supply.
Full guide for 08on the Vokera Easi Flo LE
Limit thermostatPumpDiverter valveHeat exchangerAir pressure switchFlue fan
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