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Hi, can you help/advise? I have recently replaced my water pump and my diverter valve on my ch system. I suspect I have a lot of air in my system as the diverter valve makes a funny noise then cuts off. How much air can be in the system and is it best to take it out through the srew in the...

Hi, folk's I need a hand. I have a worcester highflow 400 combi boiler. We have hot water but no central heating. Is there anyway I can simply bypass anything to get the heating on? I don't care if the heating is on 24/7 thanks