can any one help. 
the boiler runs ok on c/heating no problem.
when i run the hot water tap the boiler switches over runs for one seconed then cuts out with the power light flashing.
i have checked both diaphrams and the heat exchanger for sludge all ok
pump runs ok as well.
could this be a a PCB problem.
the boiler runs ok on c/heating no problem.
when i run the hot water tap the boiler switches over runs for one seconed then cuts out with the power light flashing.
i have checked both diaphrams and the heat exchanger for sludge all ok
pump runs ok as well.
could this be a a PCB problem.
