Slow flow DHW from Worcester Bosch Greenstar 28i Junior Boiler

[Danman]

Hi, I've got a 7 year old Worcester Bosch Greenstar 28i combi boiler, the dhw flow rate has gradually got slower over time and is now only about 4 litres a minute, the water is consistently hot all the time just slow flowing, all the hot water taps in the house run at the same pace, cold flow is good pressure everywhere, any ideas would be appreciated.

 

[king of pipes]

If your in a hard water area it's more than likely a partial blockage in the plate heat exchanger a engineer will be needed to replace this and solve your problem . Kop