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Nav screen shows: Result:NG in red?

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I can't get the heating to work on my Ferroli F24B?

Can anyone help. My Ferroli F24B boiler is suppling hot water but no central heating. I have checked the batte... [Read more]
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how to fix ferroli optimax 25 c?

why would heating stay on continuous wth r stat link removed and timer link out, only controll that works is t... [Read more]
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Ferolli optimal 25c timer off radiators still on ?

My boiler seems to be on all the time .british gas man changed programmer and it still does it . The only way... [Read more]
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My boiler keeps flashing orange A4 and I have no heating or hot water I have to mess around with the reset but... [Read more]
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can timer be replaced?

ferroli modena 80e combi boiler timer not working, can it be replaced or repaired?
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i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
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I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
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Connections on Ferroli F24 Gas Valve?

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