Optimax 25 S Manual - Ferroli

Optimax 25 SF25Fault Possible cause CureSoftware fault • Software operating fault • Cut off and restore the electricitysupply. If the trouble remains,check and/or change the main CVBCF26No flame after the ignitionphase (5 times in 4 min.)• Detection electrode fault• Flame instable• Incorrect gas valve Offset• Flue gas circuit obstructed• Siphon obstructed• Check that the electrode is correctpositioned and is necessary changeit• Check the burner• Check Offset at the minimum power• Check if flue gas circuit is free• Clean and if necessary change thesiphonF30Delivery sensor fault• Sensor damaged or shortcircuited• Check the wiring or changethe sensorF31Delivery sensor fault• Sensor damaged or wiringbroken• Check the wiring or changethe sensorF34Supply voltage under 190V.or over 250V.• Electric mains trouble• Check the electrical systemF35Irregular mains frequency • Electric mains trouble • Check the electrical systemF36Electronic CVBC trouble• Change the electronic CVBCF37Incorrect system waterpressure• Pressure too low• Sensor damaged• Fill the system• Check the sensorF43Return sensor fault• Sensor damaged or wiringshorted• Check the wiring or change thesensorF44Return sensor fault• Sensor damaged or wiringbroken• Check the wiring or change thesensorF45Flue sensor fault• Sensor damaged or wiringshorted• Check the wiring or change thesensorF46Flue sensor fault• Sensor damaged or wiringbroken• Check the wiring or change thesensor27