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Mend Ferroli Optimax HE C31 Boiler Heating Error Code

boiler?

hi i av a ferroli optimax he c31 boiler and its not workin
keeps flashin f 35 and sumtimes f 11 an engineer was meant 2 cum out but hasnt been on and on at them but stil no 4 2wks sum1 plz help

wayne
January 2012
FerroliFerroli Optimax HE C31Heating, Home Heating SystemsBoiler Heating Error Code

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