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home Fix label Heating label_important Home Heating Systems category Worcester Bosch

why is my Worcester Bosch combi boiler losing ressure all the time the heat?

why is my Worcester Bosch combi 280 boiler losing presssure. it is fine when the heating is on but when it is turned off the pressure drops to zero. I am continually filling it up.
Liz Lancaster, December 2007
home Fix label Heating label_important Home Heating Systems category Worcester Boschdone
sounds like faulty exp vess and possibly dumping water out prv

steve, December 2007
I am assuming you mean water pressure.
When you top the system pressure up when cold does it lose that pressure before you put the heating on? If not then it sounds like the expansion vessel has gone if it does then you have a leak somewhere

Pip, December 2007
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