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I have a Worcester Bosch Greenstar 24i system boiler that was installed in our utility room in 2015. For the last 2-3 years I have had a very feint smell of what I thought was gas but apparently isn’t. I have had National Grid out twice and they have investigated all over the house and tell me I don’t have a gas leak, the last engineer said he could smell what I could and said it’s not gas. I have had British Gas also investigate during the last two annual services and they say there isn’t a problem with the boiler.
I only get the smell if the CH is on and only if the boiler is alight when the programmer switch’s off never when the thermostat switches off, I now have a Wiser smart programmer/thermostat and I have the same smell when the CH turns off. The smell isn’t apparent every time, just occasionally. The utility door is always closed and when opened if there is a smell it dissipates very quickly. I’m stumped!
I only get the smell if the CH is on and only if the boiler is alight when the programmer switch’s off never when the thermostat switches off, I now have a Wiser smart programmer/thermostat and I have the same smell when the CH turns off. The smell isn’t apparent every time, just occasionally. The utility door is always closed and when opened if there is a smell it dissipates very quickly. I’m stumped!