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Baxi Baxi 600/800/Assure System 2 and 600 Combi 2 platform fault codes

10 codes from the Baxi manual for the Baxi 600/800/Assure System 2 and 600 Combi 2 platform gas boiler. Pick one for what it means, the likely causes and where to start.

CodeWhat it means
E.04.08Maximum safe temperature value reached
E.04.09Difference between flue gas sensors 1 and 2 temperature values
E.04.10Burner failed to ignite after 4 attempts
E.04.11VPS gas valve test failed
E.04.12Ignition failure for monitoring parasitic flame
E.04.14Temperature difference between set point and burner exceeds 60s vs GVC configuration
E.04.15Flue gas exhaust pipe blocked
E.04.23Gas valve check valve internal stoppage
E.04.24Gas family not detected during automatic detection function
E.04.54Fault in gas valve control circuit