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Fault code ( nocn ) on a ferroli boiler

I have a new ferroli optimax 38c boiler and its showing fault code ( nocn ) its not in the book does anybody have any idea.

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If nocn is on the time clock then check the wiring to time clock and if all good then it is the time clock at fault and will need repleacing

Posted on May 04, 2010

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Hit it with the palm of your fist lightly just to the left and below of the display panel, it's a loose circuit on the control board that is stopping the relay from kicking the main system into life.

Posted on Aug 01, 2015

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http://www.ferroli.co.uk/Product_Documentation/Domestic/Optimax_HE_31_C_Manual.pdf

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