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JPL941 Member Posts: 51

December 2017 edited August 2023 in Strictly Steam

Hello

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nicholas bonham-carter Member Posts: 8,578

December 2017

Is there a 24 volt transformer mounted on the boiler?
They can make quite a hum.--NBC

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JPL941 Member Posts: 51

December 2017 edited August 2023

Hello

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EBEBRATT-Ed Member Posts: 19,582

December 2017

My guess would be a combustion problem Your plumber may be correct about the gas pressure

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