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Mend Worcester Bosch 28 CDi Boiler Radiator

pressure keeps rising ?

i have aworcester 28 cd i and the pressure keeps rising, every couple of hours i drain a radiator and the pressure lowers ?

maria
December 2010

Worcester Bosch Worcester Bosch 28 CDi Heating, Home Heating Systems Boiler Radiator Worcester

Firstly, make sure the filling key is removed so that no water can enter the system by that route.
Assuming it is removed and the pressure is still rising, it'll be the domestic heat exchanger failing internally and will need replacing, had this fault on many occasions.

Carefree
December 2010

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Worcester 28 CDi Pressure Rising - Fixes