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Mend Saunier Duval F24E:2 Boiler Heating

Query boiler not giving heat or hot water?

I have a Saunier Duval F24E:2 and the red and green lights as on constantly. The thermostat is showing at 21 and flashing. Tried the reset but still the same. Water pressure stuck at just over 1 bar. Any suggestions?

Cold SUPO
January 2013
Saunier DuvalSaunier Duval F24E:2Heating, Home Heating SystemsBoiler Heating Saunier Duval

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Saunier Duval F24E:2 Not Heating - Help!