FAULT CODES

None

Fault code	Cause	Action (click on appropriate action)
0A	CO limiter (if installed) has responded. CO concentration too high.	Check the heating system. Remove the cause of escaping CO
0A	Gas pressure switch (if installed) has responded. Gas pressure too low.	Check gas supply
0C	Mains voltage too low	Check the power supply.
10	Short circuit, outside temperature sensor	Check the outside temperature sensor and lead
18	Lead break, outside temperature sensor	Check the outside temperature sensor and lead
30	Short circuit, boiler water temperature sensor	Check boiler water temperature sensor
38	Lead break, boiler water temperature sensor	Check boiler water temperature sensor
51	Short circuit, outlet temperature sensor	Check sensor
52	Short circuit, flow sensor	Check connections, lead & sensor
59	Lead break, outlet temperature sensor	Check sensor
5 A	Lead break, flow sensor	Check connections, lead & sensor
A3	Flue Gas Sensor Check Failed	Check connections, lead, fitment & sensor
b0	Short circuit, flue gas temperature sensor	Check sensor
b8	Lead break, flue gas temperature sensor	Check sensor

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