how can i fix a hot water problem with my worcester 28i junior?

YEE I SUGEST DAT YE THE HEAT EXCHANGER IS BLOCKED WITH PROBERLY LIMESCALE N OTHER RUBBISH, THATS IT MATE, OR IF IT AINT FIRING WEN THE DEMAND IS ON THEN IT COULD BE UR PCB BUT CLEARLY THIS SOUNDS LIKE U NEED A NU HW HEAT EXCHANGER.

KRIZLA
May 2008

first port of call, there is a strainer type filter inline of the water water main to the boiler, isolate the water feed, open remove and clean the filter this maybe restricting the water flow and stopping the boiler from firing...

if not, the dhw heat exchanger could be sludged or scaled up....but do cheak the filer first

T
May 2008