Baxi fault codes, explained.
Find your code below — each guide covers what it means, likely causes, safe checks, and when to call a Gas Safe engineer.
Baxi code library (130)
1 RED FLASH Baxi Fault Code 1 red flash: Causes & Solutions 2 RED FLASHES Baxi Fault Code 2 red flashes: Causes & Solutions 3 GREEN FLASHES Baxi Fault Code 3 green flashes: Causes & Solutions 3 RED FLASHES Baxi Fault Code 3 red flashes: Causes & Solutions 4 GREEN FLASHES Baxi Fault Code 4 green flashes: Causes & Solutions 4 RED FLASHES Baxi Fault Code 4 red flashes: Causes & Solutions 5 GREEN FLASHES Baxi Fault Code 5 green flashes: Causes & Solutions 5 RED FLASHES Baxi Fault Code 5 red flashes: Causes & Solutions 6 GREEN FLASHES Baxi Fault Code 6 green flashes: Causes & Solutions 6 RED FLASHES Baxi Fault Code 6 red flashes: Causes & Solutions 110 Baxi Fault Code 110: Causes & Solutions 111 Baxi Fault Code 111: Causes & Solutions 117 Baxi Fault Code 117: Causes & Solutions 118 Baxi Fault Code 118: Causes & Solutions 119 Baxi Fault Code 119: Causes & Solutions 125 Baxi Fault Code 125: Causes & Solutions 127 Baxi Fault Code 127: Causes & Solutions 128 Baxi Fault Code 128: Causes & Solutions 133 Baxi Fault Code 133: Causes & Solutions 153 Baxi Fault Code 153: Causes & Solutions 160 Baxi Fault Code 160: Causes & Solutions 162 Baxi Fault Code 162: Causes & Solutions 164 Baxi Fault Code 164: Causes & Solutions 166 Baxi Fault Code 166: Causes & Solutions 270 Baxi Fault Code 270: Causes & Solutions 432 Baxi Fault Code 432: Causes & Solutions 433 Baxi Fault Code 433: Causes & Solutions E00 04 Baxi Fault Code E.00-.04: Causes & Solutions E00 05 Baxi Fault Code E.00-.05: Causes & Solutions E01 02 Baxi Fault Code E.01-.02: Causes & Solutions E01 04 Baxi Fault Code E.01-.04: Causes & Solutions E01 11 Baxi Fault Code E.01-.11: Causes & Solutions E01 12 Baxi Fault Code E.01-.12: Causes & Solutions E01 17 Baxi Fault Code E.01-.17: Causes & Solutions E01 20 Baxi Fault Code E.01-.20: Causes & Solutions E02 00 Baxi Fault Code E.02-.00: Causes & Solutions E02 07 Baxi Fault Code E.02-.07: Causes & Solutions E02 16 Baxi Fault Code E.02-.16: Causes & Solutions E02 17 Baxi Fault Code E.02-.17: Causes & Solutions E02 19 Baxi Fault Code E.02-.19: Causes & Solutions E02 20 Baxi Fault Code E.02-.20: Causes & Solutions E02 21 Baxi Fault Code E.02-.21: Causes & Solutions E02 47 Baxi Fault Code E.02-.47: Causes & Solutions E02 48 Baxi Fault Code E.02-.48: Causes & Solutions E04 00 Baxi Fault Code E.04-.00: Causes & Solutions E04 01 Baxi Fault Code E.04-.01: Causes & Solutions E04 02 Baxi Fault Code E.04-.02: Causes & Solutions E04 03 Baxi Fault Code E.04-.03: Causes & Solutions E04 04 Baxi Fault Code E.04-.04: Causes & Solutions E04 05 Baxi Fault Code E.04-.05: Causes & Solutions E04 06 Baxi Fault Code E.04-.06: Causes & Solutions E04 08 Baxi Fault Code E.04-.08: Causes & Solutions E04 10 Baxi Fault Code E.04-.10: Causes & Solutions E04 12 Baxi Fault Code E.04-.12: Causes & Solutions E04 13 Baxi Fault Code E.04-.13: Causes & Solutions E04 17 Baxi Fault Code E.04-.17: Causes & Solutions E0 Baxi Fault Code E0: Causes & Solutions E1 Baxi Fault Code E1: Causes & Solutions E2 Baxi Fault Code E2: Causes & Solutions E3 Baxi Fault Code E3: Causes & Solutions E4 Baxi Fault Code E4: Causes & Solutions E09 Baxi Fault Code E09: Causes & Solutions E10 Baxi Fault Code E10: Causes & Solutions E12 Baxi Fault Code E12: Causes & Solutions E13 Baxi Fault Code E13: Causes & Solutions E15 Baxi Fault Code E15: Causes & Solutions E20 Baxi Fault Code E20: Causes & Solutions E28 Baxi Fault Code E28: Causes & Solutions E40 Baxi Fault Code E40: Causes & Solutions E50 Baxi Fault Code E50: Causes & Solutions E53 Baxi Fault Code E53: Causes & Solutions E54 Baxi Fault Code E54: Causes & Solutions E55 Baxi Fault Code E55: Causes & Solutions E78 Baxi Fault Code E78: Causes & Solutions E83 84 85 86 87 Baxi Fault Code E83/84/85/86/87: Causes & Solutions E92 Baxi Fault Code E92: Causes & Solutions E100 Baxi Fault Code E100: Causes & Solutions E109 Baxi Fault Code E109: Causes & Solutions E110 Baxi Fault Code E110: Causes & Solutions E117 Baxi Fault Code E117: Causes & Solutions E118 Baxi Fault Code E118: Causes & Solutions E119 Baxi Fault Code E119: Causes & Solutions E125 Baxi Fault Code E125: Causes & Solutions E128 Baxi Fault Code E128: Causes & Solutions E129 Baxi Fault Code E129: Causes & Solutions E130 Baxi Fault Code E130: Causes & Solutions E131 Baxi Fault Code E131: Causes & Solutions E133 Baxi Fault Code E133: Causes & Solutions E134 Baxi Fault Code E134: Causes & Solutions E135 Baxi Fault Code E135: Causes & Solutions E154 Baxi Fault Code E154: Causes & Solutions E160 E161 Baxi Fault Code E160 / E161: Causes & Solutions E160 Baxi Fault Code E160: Causes & Solutions E163 Baxi Fault Code E163: Causes & Solutions E164 Baxi Fault Code E164: Causes & Solutions E167 Baxi Fault Code E167: Causes & Solutions E168 Baxi Fault Code E168: Causes & Solutions E193 Baxi Fault Code E193: Causes & Solutions E270 Baxi Fault Code E270: Causes & Solutions E317 Baxi Fault Code E317: Causes & Solutions E321 Baxi Fault Code E321: Causes & Solutions E384 Baxi Fault Code E384: Causes & Solutions E385 Baxi Fault Code E385: Causes & Solutions E430 FLAME Baxi Fault Code E430 + Flame: Causes & Solutions E430 Baxi Fault Code E430: Causes & Solutions FLASH FLASH ON Baxi Fault Code FLASH FLASH ON: Causes & Solutions FLASH OFF FLASH Baxi Fault Code FLASH OFF FLASH: Causes & Solutions FLASH OFF ON Baxi Fault Code FLASH OFF ON: Causes & Solutions FLASH ON FLASH Baxi Fault Code FLASH ON FLASH: Causes & Solutions FLASH ON ON Baxi Fault Code FLASH ON ON: Causes & Solutions H01 00 Baxi Fault Code H.01-.00: Causes & Solutions H01 05 Baxi Fault Code H.01-.05: Causes & Solutions H01 08 Baxi Fault Code H.01-.08: Causes & Solutions H01 14 Baxi Fault Code H.01-.14: Causes & Solutions H01 18 Baxi Fault Code H.01-.18: Causes & Solutions H01 21 Baxi Fault Code H.01-.21: Causes & Solutions H02 02 Baxi Fault Code H.02-.02: Causes & Solutions H02 03 Baxi Fault Code H.02-.03: Causes & Solutions H02 04 Baxi Fault Code H.02-.04: Causes & Solutions H02 06 Baxi Fault Code H.02-.06: Causes & Solutions H03 00 Baxi Fault Code H.03-.00: Causes & Solutions H03 01 Baxi Fault Code H.03-.01: Causes & Solutions H03 02 Baxi Fault Code H.03-.02: Causes & Solutions OFF OFF OFF Baxi Fault Code OFF OFF OFF: Causes & Solutions ON FLASH FLASH Baxi Fault Code ON FLASH FLASH: Causes & Solutions ON FLASH ON Baxi Fault Code ON FLASH ON: Causes & Solutions ON OFF FLASH Baxi Fault Code ON OFF FLASH: Causes & Solutions ON OFF ON Baxi Fault Code ON OFF ON: Causes & Solutions ON ON FLASH Baxi Fault Code ON ON FLASH: Causes & Solutions ON ON ON Baxi Fault Code ON ON ON: Causes & Solutions
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