Hi, it sounds like a bee, happens intermittently with rads on only, goes off when you open hw tap
Video - https://drive.google.com/file/d/1eGBfQHfTCeM7s8z51rV2yhXCyRC2AppK/view?usp=sharing
Thanks
Video - https://drive.google.com/file/d/1eGBfQHfTCeM7s8z51rV2yhXCyRC2AppK/view?usp=sharing
Thanks