Search results

Many thanks for all your replies. I will contact Worcester again to get them to change my heat exchanger, and will ask about a secondary circuit water conditioner. Since my rads are all working fine (top & bottom) then a flush sounds to be a waste of money. Thanks again.

Hi everyone I've got a Worcester Bosch Highflow 400 RSF combi boiler, 4 years old, very hard water area. One of the thermostats (not sure which one) cuts out after about 10 mins. regardless if any HW is used, and then there is no more HW until I let the system cool down and reset the...