Measurement:

Click on the appropriate fault code for diagnosis
E01 - IGNITION FAILURE
E02 - OVERHEAT BOILER LOCKOUT
E03 - FLUE THERMOSTAT INTERVENTION
E04 - GAS VALVE CONNECTION FAULT
E05 - FLOW SENSOR FAULT
E06 - DHW SENSOR FAULT
E08 - TOO MANY RESETS
E10 - PRIMARY SYSTEM PRESSURE
E12 - CYLINDER SENSOR FAULT
E15 - INTERNAL WIRING ERROR
E16 - FAN FAULT
E20 - FLAME SENSING FAULT
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