BoilerFaultCodesThe 6 most common faults
01
Purge cycle mode active Engineer
NA - BLINKING RED, BLINKING YELLOW, BLINKING GREEN
Full guide for Purge cycle mode active02
Alarm high limit thermostat Engineer
Final - BLINKING RED, OFF YELLOW, OFF GREEN. Reset appliance. Call engineer if fault re-occurs
Full guide for Alarm high limit thermostat03
Alarm system water pressure Engineer
Final - ON RED, OFF YELLOW, ON GREEN. Check/refill system pressure, reset, check. Call engineer if fault re-occurs
Full guide for Alarm system water pressure04
Alarm safety shutdown and/or internal fault Engineer
Final - ON RED, OFF YELLOW, OFF GREEN. Reset appliance. Call engineer if fault re-occurs
Full guide for Alarm safety shutdown and/or internal fault05
Temporary fault Engineer
Temporary - OFF RED, OFF YELLOW, BLINKING GREEN
Full guide for Temporary fault06
Service operation Engineer
NA - OFF RED, BLINKING YELLOW, OFF GREEN
Full guide for Service operationCall 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
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