Hi Guys,
Just moved into a new property last week, and seem to have inherited a few problems! Firstly this is the first home I have had with a combi boiler. Day 1 I noticed that the bathroom radiator was only partially heated, so I bleed out the radiator in the bathroom and the one on the landing, there seemed to be a lot of air in the system. Then noticed that the pressure gauge was reading a little low so i filled the system back up to 1.5bar. After the system had been on a while I could hear this "whooshing noise" sounded similar to fast flowing water in a pipe which I could hear all over the house. I switched the central heating switch off and the noise remained, eventually I heard a click (sounded like relay) and the noise disappeared. Upon switching the heating back on the noise returned within a few minutes. The previous owners had the boiler temp set on maximum so I turned this to half way (as the radiators were hot enough to take skin off!) With this setting the noise did not come back as quickly the second day. But the noise does re-occur when the central heating has been on for a while. When using Hot water only, the noise never occurs. Since then I have vented the CH pump, and rechecked that there is no air in the radiators. The boiler was installed 2 years ago so fairly new. After trying to pinpoint where the noise was coming from sounds like from the back of the boiler (expansion vessel, relief valve) Doesn't seem to be any water coming from the relief valve outlet. Pressure on the gauge doesn't seem to rise over 1.8 bar while the CH is operating. Just wondered if lack of pressure on the expansion vessel would cause this ?
Just moved into a new property last week, and seem to have inherited a few problems! Firstly this is the first home I have had with a combi boiler. Day 1 I noticed that the bathroom radiator was only partially heated, so I bleed out the radiator in the bathroom and the one on the landing, there seemed to be a lot of air in the system. Then noticed that the pressure gauge was reading a little low so i filled the system back up to 1.5bar. After the system had been on a while I could hear this "whooshing noise" sounded similar to fast flowing water in a pipe which I could hear all over the house. I switched the central heating switch off and the noise remained, eventually I heard a click (sounded like relay) and the noise disappeared. Upon switching the heating back on the noise returned within a few minutes. The previous owners had the boiler temp set on maximum so I turned this to half way (as the radiators were hot enough to take skin off!) With this setting the noise did not come back as quickly the second day. But the noise does re-occur when the central heating has been on for a while. When using Hot water only, the noise never occurs. Since then I have vented the CH pump, and rechecked that there is no air in the radiators. The boiler was installed 2 years ago so fairly new. After trying to pinpoint where the noise was coming from sounds like from the back of the boiler (expansion vessel, relief valve) Doesn't seem to be any water coming from the relief valve outlet. Pressure on the gauge doesn't seem to rise over 1.8 bar while the CH is operating. Just wondered if lack of pressure on the expansion vessel would cause this ?
