Just wanted some info on the problem as the HW is switched on the boiler or pipes decide to make a noise about 1 min after coming on. I read in the D.I.Y manual that the mid position valve can be at fault but how do I check this?
ps. I switched the heating on and it works ok.
Cheers Sunny.
ps. I switched the heating on and it works ok.
Cheers Sunny.