heat exchanger replacement?
my rads are hot at top and cold at bottom how can i fix them ?
halstead combi discharging?
halstead ace high combi keeps dropping pressure?
Halstead ace boiler locking out after 30 secs. ?
boiler will not stay on?
Halstead finest gold, no hot water, only when heating is on?
hot water?
Fuse blew within hrs Halstead ACE HE 30 after being replaced?