Hi,
We moved into a house with a Minimiser SE boiler, open-vented, feed-and-expansion tank in the loft, boiler in the kitchen and water tank/pumps in an airing cupboard. I get woken up by a wailing sound coming from the boiler. I don't think it's the fan. Interestingly, we only get this sound when the boiler is used to for CH, not for DHW heating. Any guesses?
I don't know when the system was last serviced and if the rest of the house is anything to go by, my guess is that the previous owners, who were here for 5 years, never had it done. I have some scale inhibitor product on hand. I need to drain the system anyway because of 2 rad valves that need changing. Could it be limescale on the heat exchanger that is causing the noise? Why would we get noise with CH but none with DHW? I assumed it didn't make a difference at the boiler end but I'm obviously wrong.
Any advice much appreciated.
We moved into a house with a Minimiser SE boiler, open-vented, feed-and-expansion tank in the loft, boiler in the kitchen and water tank/pumps in an airing cupboard. I get woken up by a wailing sound coming from the boiler. I don't think it's the fan. Interestingly, we only get this sound when the boiler is used to for CH, not for DHW heating. Any guesses?
I don't know when the system was last serviced and if the rest of the house is anything to go by, my guess is that the previous owners, who were here for 5 years, never had it done. I have some scale inhibitor product on hand. I need to drain the system anyway because of 2 rad valves that need changing. Could it be limescale on the heat exchanger that is causing the noise? Why would we get noise with CH but none with DHW? I assumed it didn't make a difference at the boiler end but I'm obviously wrong.
Any advice much appreciated.