I suspect the final solution is to remove reducer and replace shower mixer. Just removing it would leave me with luke-warm hot water.
However the plumbers probably think I'm making this up. It worked fine when they left it.
Could hot backflow to cold confuse reducer? It's wound fully...
Hi All,
I recently had an conversion from a vented system to closed with combi-boiler.
The shower was previously gravity-fed via a pump on hot and cold. The cold was backflowing into the hot so the plumbers fitted a reducing valve on cold supply to shower.
The reducer randomly drops to...