FAULT CODES 1

None

Fault code	Cause	Action (click on appropriate action)
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
A9	Communication error, Open Therm device	Not applicable for this boiler
b0	Short circuit, flue gas temperature sensor	Check sensor
b8	Lead break, flue gas temperature sensor	Check sensor
E3	Fault in safety chain	Check the temperature limiter and connecting cables
E5	Internal fault	Check the ionisation electrode and connecting cables

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