Our website uses cookies to help provide you with the best experience tailored to your interests. To use the website with full comfort, please accept to receive all cookies on our website. For more information with regard to Cookies please see our Privacy policy.

Accept Decline

Fault Finding Codes

Fault finding codes for the SI range

Fault finding codes for the SI range

F1Ignition 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

Back to overview