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Flashing Fault Codes
F1/F4 - Ignition fault
F2/F3 - Fan fault
F5 - Overheat fault
F6 - Central heating flow thermistor fault
F10 - Central heating return thermistor fault
F11/F13 - Main board connection fault
F8/F12 - User interface connection fault
F14 - Flow temperature greater than 95°C
NOTE: On some older models Overheat also produces a flashing F9 so if you have this fault code and suspect that its due to Overheat please use the Constant F9- Overheat option.
Flashing Fault Codes
F1/F4 - Ignition fault
F2/F3 - Fan fault
F5 - Overheat fault
F6 - Central heating flow thermistor fault
F10 - Central heating return thermistor fault
F11/F13 - Main board connection fault
F8/F12 - User interface connection fault
F14 - Flow temperature greater than 95°C
NOTE: On some older models Overheat also produces a flashing F9 so if you have this fault code and suspect that its due to Overheat please use the Constant F9- Overheat option.