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Mend Ravenheat Boiler Pressure

my pressure valve keeps opening for no reason i run it at 1and half bar?

when the boiler is running it is fine soon as it is turned off over night the boiler empties through the pressure valve i have changed the valve but get the same problem the boiler is 18 months old thank you the boiler is a ravenheat condencing dont no the model number

leonard burgess
January 2008

Ravenheat Heating, Home Heating Systems Boiler Pressure Ravenheat

I have similar problem, I thought mine was dooing the same as yourse, when i filled preasure up in the morning and fired it up it was going past 3 bar and going out of the preasure relief valve,so when it cooled over night it was empty in the morning,spoke to engineer he said change the two thermisters ,one on each side half way up little screw in sender with two wire conecter on it .
hope this helps .

mark
April 2008

I have similar problem, I thought mine was dooing the same as yourse, when i filled preasure up in the morning and fired it up it was going past 3 bar and going out of the preasure relief valve,so when it cooled over night it was empty in the morning,spoke to engineer he said change the two thermisters ,one on each side half way up little screw in sender with two wire conecter on it .
hope this helps .

mark
April 2008

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Ravenheat Boiler Pressure Valve Issue