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Boiler Servicing Fault Finding Codes

Fault finding codes for the CI Plus range

Fault finding codes for the CI Plus range

CodesDescription
F1Ignition fault
F2Fan/APS
F3Air fault
F4Ignition fault
F5Overheat Fault
F6Central heating flow thermistor
F7Domestic hot water thermistor
F8Tank thermistor (N/A For this appliance)
F9Water pressure sensor fault (please contact GW technical department for further information
F10Central return flow thermistor
F11Main board connection fault
F12Connection fault between main pcb and display pcb
F13Main pcb connection fault
F14Central heating flow temperature > 95 degrees
F15Gas valve stepper motor fault
F16Flame detection fault
F17Power supply is less than 170v
F18User interface fault
F19Central heating thermistor unplugged
F20Software incompatibility

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