Keston C40 and C55 boiler fault and error codes
Do you have a faulty Keston boiler? MR Boiler Repairs is the UK’s leading boiler repair and service specialist, providing support for domestic, commercial and residential properties. Our low cost fixed price repair service will provide you with peace of mind and avoid any scary repair bills.
Are you experiencing a fault with your Keston C40 or C55 boiler? In the event of a fault causing a boiler shutdown the display will show an error message “E nn”
Error and fault codes for the Keston C40 and C55 boilers
E00 Flame detection when not expected
E02 No ignition after restart
E03 Gas valve faulty or not connected
E04 Power has been reset whilst boiler was in lockout
E11 Internal electronics error
E18 Flow overheat
E19 Maximum return temperature
E25 Flow overheat
E30 Difference between flow and return temperatures too high
E31 Flow thermistor short circuit
E32 Return thermistor short circuit
E36 Flow thermistor open circuit
E37 Return thermistor open circuit
E44 Low water pressure
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Keston Boiler Manuals / Instructions
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