"Lobster" wrote in message
...
Iwan wrote:
Hi, Can anyone give me some advice please?

I have a mira 415 running off a Worcester 24 combi, both are
approximately 5 yrs old and the boiler is well serviced by British Gas.

The problem I have is that the temperature of the water goes from
either freezing cold to scalding hot in a cycle of probably 30-50
seconds. No amount of adjustment of the control helps me. any ideas
anyone?

Also what would I need to keep the pressure/temperature constant if
someone flushed the toilet or used another tap?

any advice would be gratefully received. Thank you


Have you read the manual for the shower?

http://www.mirashowers.com/onlinecatalog/pdf/15297.pdf
It has a troubleshooting section which includes a description of exactly
your symptoms AFAICS.

Hmm..
My Mira 415 doesn't look like that.
I wonder why they have reused the model number?