my hot water tap is not working in my kitchen but i can use the other taps throughout the house. it is a mixer with hot and cold coming out of a single tap. the cold water works fine but the hot doesn't come out at all no matter how much you turn it. I would think i'm going to have to replace the tap unit itself but am unsure how to do this as i have a combi boiler and don't know if i turn the water supply will it cause any any damage to my boiler?
