Worcester 24 cdi rsf problem

[Hobo128]

Hi all

I have a problem with a Worcester 24 CDI RSF.... The old worcester with the grey front..... the problem is low hot water pressure....I've had this before and have never managed to solve it.... checked the filter on the cold inlet and checked the plate heat exchanger too.... any ideas

 

[ShaunCorbs]

Check the flow and pressure out of the boiler might be a restriction tap side

 

[Hobo128]

I will do but I don't think the restriction is at the tap as its all the outlets that have reduced including shower

 

[ShaunCorbs]

Other than the diverter valve and plate it’s straight pipework

 

[moonlight]

Is there a pressure reducing valve on the mains playing up?

 

[Hobo128]

Cold water pressure is fine

 

[Ben-gee]

Could be a back pressure from cold crossing at a mixer ( probably shower)
Can you isolate the shower to check this?

 

[Hobo128]

Sorted it.... Thanks everyone.... it was a fault flow restrictor which is inside the plate heat ex.....