Fault Code	Possible Cause
Flash off on	Over heated – try bleeding your radiators
Flash on Flash	PCB fault
Flash on on	PCB fault
E10	Outdoor sensor error
E20	Central Heating Thermistor Senor Fault
E28	Flue Thermistor Fault
E110	Boiler Overheat tripped – try bleeding your radiator
E119	Low water pressure
E125	Primary Water Circulation Fault – try bleeding your radiators
E131	Flue overheat lock out – this may follow a power cut, try resetting
E133	Ignition fault
E160 / E161	Fan Fault
E164	Heating Flow Switch Error (Ireland) Pressure Sensor Error (UK)
E167	PCB Fault
E193	Circulation fault

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