High Flow/Return diff
Posted: Sat Nov 02, 2024 2:47 pm
Hi, I've just drained the central heating and taken off a radiator. I've then refilled and re pressurised. I've bled all the radiators and boiler pressure at 1.2 bar.
When I use the hot water the boiler says
'High Flow/Return diff' and there's a pumping sound coming from the boiler....
Can anyone help?
When I use the hot water the boiler says
'High Flow/Return diff' and there's a pumping sound coming from the boiler....
Can anyone help?