hot water going hot and cold, burner coming on and going off?
dip switches positions ?
heatline c28?
What can I do when my Heatline C24 boiler continuously cuts out?
heatline s24 compact?
heatline boiler c24?
heatline compact s24 boiler?
heatline vizo pressurizing?
problems with hot water on heatline viso 24?