In our bathroom when I turn the hot tap on at our sink, water starts to come out of the shower head and there is a grinding noise. This happens every day, not all the time, probably 2 or 3 times a day. we have a gas combi boiler. Is this something I should worry about or get checked?
The shower mixer is a Triton Luca thermostatic bar mixer.
A plumber did put a new rubber washer in the non-return valve a few months ago, but I don't know if this is related to it. I have attached a video clip at... https://youtu.be/qofrPPOKhQQ
any thoughts what could be causing this? thanks in advance.
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