Glow-Worm Xtramax HE Boiler Range Error Codes

Glow-Worm Xtramax HE Boiler Range Error Codes

Codes Description
F1 Ignition fault
F2 Fan
F3 Fan
F4 Ignition fault
F5 Overheat Fault
F6 Central heating flow thermistor
F7 Domestic hot water thermistor
F8 Tank thermistor
F9 Water pressure sensor fault (please contact GW technical department for further information)
F10 Central return flow thermistor
F11 Main board connection fault
F12 User interface connection fault
F13 PCB memory or sensing fault
F14 Gas valve control defective
F16 Flame detection fault
F17 Power supply is less than 170v
F18 User interface fault
F19 Central heating thermistor unplugged
F20 Software incompatibility
F23 Water circulation fault
F24 Cental heating return temperature > 90 degrees
F25 Maximum temperature rise slope
F26 Maximum delta temperature

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