I've been having issues with my shower going hot and cold. I was told that maybe one of my mixer taps was passing cold to hot so I tested them and sure enough with the hot supply isolated at the boiler - water came out the hot side on every mixer tap (downstairs loo, bathroom and ensuite.)
I replaced the cartridge in the downstairs loo and was no change.
All the taps were directly fed so couldn't isolate to try and find leaking one.
Today I have fitted double check valves with isolators on each of the hot pipes, and isolators on the cold.
And they are still the same pressure is definitely in the hot side - as when I isolate each sinks hot side - the water stops. I've isolated kitchen sink (2 separate feeds), isolated all colds to the sinks and still pressure there. Oddly though with the sink mixer taps off-if I open the hot on the bath or the shower then there is nothing - no water at all. Head scratching time. Has anyone got any suggestions please
Currently bath is two separate taps. The shower is currently a manual mixer tap with two manual taps.
I replaced the cartridge in the downstairs loo and was no change.
All the taps were directly fed so couldn't isolate to try and find leaking one.
Today I have fitted double check valves with isolators on each of the hot pipes, and isolators on the cold.
And they are still the same pressure is definitely in the hot side - as when I isolate each sinks hot side - the water stops. I've isolated kitchen sink (2 separate feeds), isolated all colds to the sinks and still pressure there. Oddly though with the sink mixer taps off-if I open the hot on the bath or the shower then there is nothing - no water at all. Head scratching time. Has anyone got any suggestions please
Currently bath is two separate taps. The shower is currently a manual mixer tap with two manual taps.