This morning we were awoken at 5:10 by the hot water system making a whining noise. (Well to be precise I was awoken by my wife whining about the heating system making a whining noise!)
We have a wall-boiler and the hot water system is an indirect one.
At this point only the hot water system was running, not the heating, and had been on about 20 minutes. I was unable to tell if the noise was coming from the boiler, or something in the loft (the pump and mid-position actuator are in the loft). When I opened the window next to the boiler it didn't sound any louder, so I don't think the noise was coming from the flue.
I turned off the hot water and the noise stopped, when I turned it on again the noise started again pretty much straight away, though initially the noise was intermittent. However, when I put the heating on there was no noise, so I tried it with the heating and hot water on together and again no noise... well at least not until the wife woke me up again at about 6:30 complaining about it, though this time it was not as loud.
Any suggestions appreciated (for fixing the hot water system... not the wife!)
We have a wall-boiler and the hot water system is an indirect one.
At this point only the hot water system was running, not the heating, and had been on about 20 minutes. I was unable to tell if the noise was coming from the boiler, or something in the loft (the pump and mid-position actuator are in the loft). When I opened the window next to the boiler it didn't sound any louder, so I don't think the noise was coming from the flue.
I turned off the hot water and the noise stopped, when I turned it on again the noise started again pretty much straight away, though initially the noise was intermittent. However, when I put the heating on there was no noise, so I tried it with the heating and hot water on together and again no noise... well at least not until the wife woke me up again at about 6:30 complaining about it, though this time it was not as loud.
Any suggestions appreciated (for fixing the hot water system... not the wife!)