BoilerFaultCodesWhat the manual says
Manufacturer manualPCB settings cannot be read. MAIN PCB ERROR Configure CN1/CN2 Replace the main PCB
Shared across the Assure range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Related fault codes
All 66 fault codes on the Assure System
Seeing a different code? Every code this model can display, in one place.
101213A.00.28A.00.29A.00.34A.02.06A.02.18A.02.36A.02.37A.02.45A.02.46A.02.48A.02.49A.02.54A.02.55A.02.76E.00 .04E.00 .05E.00 .16E.00 .17E.00 .20E.00 .21E.01 .04E.01 .12E.01 .17E.01 .20E.02 .13E.02 .17E.02 .35E.02 .39E.02 .47E.04 .01E.04 .02E.04 .08E.04 .12E.04 .13E.04 .17E.04 .18E.04 .23E.04 .29E.04 .54E.04 .254E.04.03E.04.10H.00.42H.00.81H.01 .14H.01.00H.01.05H.01.08H.01.18H.01.21H.02 .00H.02 .02H.02 .03H.02 .05H.02 .09H.02 .10H.02 .70H.02.07H.03 .00H.03 .05H.03 .54H.03.02