No hot water in shower
The shower in my ensuite is the highest flowing water in the house.
Its on the regular hot water system (ie not a powered electric shower)
It has a Mira control for hot and cold water.
Hot water pressure in the shower has always been “weak” and hot water was always slow to start flowing. Saturday morning hot water stopped altogether. Cold works fine in the shower but if I push the lever to full hot – flow drops considerably and just some cold water comes out.
There is plenty of hot water everywhere else – including the sink and bidet beside the shower.
Here is what happened.
I turned on the shower – at hot. Normally, to speed things up I turn on the hot tap in the sink. (I do this coz I was told that this gets cooled water out of the hot pipes and lets recently heated water through more quickly)
Anyway this time the result is that the flow in the shower slowed – but the hot water never came through.
Is this an airlock somwhere – or a blockage in the mixing shower control.
Any suggestions?
Blockage in the mixing valve.
Need to shut the hot and cold water off to the mixing valve itself. Then remove the trim plate and the guts inside the valve.
You would then pulse the hot and cold water on/off for a second or two to clear the line of any sediment/debris. Then re-install the guts and see if that helped. If not, then the mixing valve CARTRIDGE itself is clogged and will need to be replaced. Repeat sequence to shut off the hot and cold water to the mixing valve and remove the inner guts again and then take the assembly to your local MIRA supplier and get replacemnet cartridge.