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Mend Ferroli Optima HE 31 C Heating Fault Pressure

Hi Any thoughts on rubbish Ferroli Optima HE 31 C?

First fault showing F37 open valve for pressure no sound left on for short period but closed off as nothing happened, then F40 came on and pressure is now climbing at 2 pressure is shut off, think must be faulty sensor but what do I do engineer not coming until Monday, will it be ok?

Jane
January 2015
FerroliFerroli Optima HE 31 CHeating, Home Heating SystemsHeating Fault Pressure

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Free repair help for Ferroli Optima HE 31 C home heating systems