showr jammed on, turned off water, released it but now only either vry hot or very cold. tmp control has no effect.may have altrd mix?

a donnelly, January 2008

Dave it was big help to me I have had the same problem
thanks for drawing.

Mel, March 2013

I have exactly the same problem and have written to Mira to enquire about a replacement unit (a newer version). If anyone can suggest something - Mira or otherwise, I would be interested to hear.

Rushing Bull, April 2012

Re: http://homepage.ntlworld.com/patrick.beane/mira723maintenance.pdf

This is exactly what we have been looking for, we now the temperature ring needs changing, we are not prepared to pay £170 for Mira to do it - we have ordered the parts and just needed the user guide.

Cheers Dave!!!!

G&T, November 2011

Hi, I have a Mira 723 with usual faults of sticking controls, stiffness with adjusting temperature ring and difficulty turning off the water. Over the past 30-40 years I have twice stripped the unit, thoroughly cleaned all signs of calcium deposit on all surfaces ( do not damage the metal surface of the moving parts). Polish with metal cleaner i.e, Brasso then wash clean before applying the Silicone Grease and installing "O" rings and washers. Avoid using any strength or pressure to the Thermostatic Coil which could if mis-shapen affect its thermal performance. Apply liberal Silicone Grease (supplied in kit) particularly the centre channel. Ensure the central channel is clean and polished. Slowly reassemble to ensure you have no parts left over, then turn it on with contols centred and await the thermostatic coil to reach equilibrium.
Turn around now and pat yourself on the back for a job well done. I am this week 1st July about to overhaul my 723 again for the third time. Not bad approx once every 10-12 years. Best of luck, it is so simple to do and enjoyable. Ray.

Ray., July 2010

Trying looking at this link. http://homepage.ntlworld.com/patrick.beane/mira723maintenance.pdf
I found it on a screwfix website forum. It is VERY useful. I bought a service pack (ie seals and washers ) and the thermostatic coil from MIRA direct and replaced them myself. If you are half confident about plumbing, this was a fairly straightforward task. It worked a treat for me. HOWEVER, some months down the line I have a problem again with my temperature mix. I think it must be the thermostatic coil again but speaking to MIRA they reckon the shower is past it's user life and needs replacing. They reckon the limescale makes the body porous over time and this affects the mix. I am now in a quandry and can't find a direct replacement for the 723. Hope this helps.

Dave, January 2008