posted this 22 December 2017
I have a Monsoon S2 (1422065-076) feeding two showers. The current situation is that the pump starts, but pumps hot water only. If I switch the shower to cold, the pump stops. Then if I select hot, it runs. I've looked at the filters. They are fine, and
there's water in the pump, i.e. it's primed. Nothing's changed with the pipework, so the problem must lie with the pump.
It's possible (and I'm fuzzy on the details) that an extended showering session by my wife may have drained the cold water tank, and consequently run the cold side dry. I am aware that this is a bad thing and can damage the seal. What are the likely consequences?
Would this have the effect of actiing like a closed valve?