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The red light only comes on when a hot tap upstairs has been turned on really quickly and the boiler kicks in, if you turn the taps on normally you get no light and only cold water. Where is the flow switch and how do i adjust it ? i havent noticed a drop in pressure lately. Thanks in...

As far as im aware you dont need to touch the boiler to refill the system. you just turn the tap on the filling loop and keep your eye on the pressure gauge you may get some leakage from the tap on the loop but this shouldnt be excessive not much of an expert im afraid

have you tried this link //www.diynot.com/forums/viewtopic.php?t=38904

Hi wondering if someone can help. we have a Potterton Combi 80 (gas) The Hot water only works upstairs where the boiler is situated and you have to turn the taps on and off 3-4 times very quickly to get hw when CH off. When Ch on hot water no problem but is at much lower temp. nothing...