picasso has helpfully given you the means to check the flow switch!
if its ok then it will more than likely be the pcb! check though that youve piped it back up right!
easy mistake to make!
shut off cold inlet iso valve at boiler, undo nut above it or the dhw one do you get water at mains pressure!
if its ok then it will more than likely be the pcb! check though that youve piped it back up right!
easy mistake to make!
shut off cold inlet iso valve at boiler, undo nut above it or the dhw one do you get water at mains pressure!