Low water pressure on unvented syetem.

[Mikeydoes]

3 days ago I partially drained the central heating on an unvented system to fit some TRV's. It refilled okay and everything worked fine but now the domestic water pressure has dropped to a mere trickle. Does anybody think there could be a link between the 2 or just a coincidence. If the how water tank needs to be looked at I will need to get an unvented qualified plumber to check it.
Thanks.

 

[Robtheplumb]

Think you have a problem with the cylinder, it could be a simple fix like a blocked filter or it could be somthing else, anyhoo, if you don't have the G3 ticket then get a bloke in who has.