Hi everyone, just looking for some help repressurising my boiler before having to call the landlord. Ive done this before in other houses by turning the 2 valves on the silver loop however, this one only seems to have 1, if I turn this I can hear water rushing in but then turns into a deep rumbling noise and the pressure does not go up. Any ideas would be greatly appreciated as it’s getting very cold now. Thank you!
