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presure loss?

worcester 28i keeps losing presure each time heating has been on
gary, February 2013
If the pressure only drops when boiler has been in use then chances are your expansion vessel requires repressurising, also with this fault the pressure will rapidly rise whilst ch is on, the pressure may exceed 3 bar

Steve, March 2013
the water must be going somewhere is it leaking outside through the prv (pressure relive valve). if so fix the problem and look into what caused the problem

gary, March 2013
link Click here to see other fixes for Worcester 28i.