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Mend Viessmann 100 w Boiler Heating F2

Wiessman 100 w with F2 fault code?

Everything been working fine until just taking shower when the water turned cold. Boiler display showing f2 code. Have tried to reset but still showing f2. Water pressure reading just under 1. Any advice, top tips would be appreciated. Not techie - just a mum at home with 2 shivering kids. Thanks !

Jeanette
November 2014
ViessmannViessmann 100 wHeating, Home Heating SystemsBoiler Heating F2

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