What the manual says
Manufacturer manualLast fault (displays any faults that have occurred for the information of the service engineer)
From this model's manual
Verified against the British Gas/British Gas Rd 430i System installation & service manual.
DIY fix possible
Press the 'Reset' button if the boiler is currently locked outMonitor the boiler to see if a specific error code appears during operationIf the boiler is working normally, no action is required
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All 31 fault codes on the RD 430i
Seeing a different code? Every code this model can display, in one place.