Mira Sprint hot and cold water

madhatter2426 · Posted: Mon Jul 13, 2009 9:18 pm

Hi all,

i have a Mira Sprint just over 1 year old. The water seems to cycle between hot and cold. The water flo does not seem to change. The water does not go very cold but tepid the back to the normal temperature. Any ideas?

seco services · Posted: Mon Jul 13, 2009 9:22 pm

try it without showerhead on and hose hanging straight down

madhatter2426 · Posted: Mon Jul 13, 2009 9:29 pm

wow that was a quick reply.

Tried that still runs hot and cold just the same. Strange thing also. as the water temp cycled the light in the bathroom seemed to flicker. almost as if there was a power drain then return to normal.

seco services · Posted: Mon Jul 13, 2009 9:41 pm

madhatter2426 wrote:

wow that was a quick reply.

Tried that still runs hot and cold just the same. Strange thing also. as the water temp cycled the light in the bathroom seemed to flicker. almost as if there was a power drain then return to normal.

is the shower still going hot/cold ?
is the light ok now ? not flickering with shower ?

The things to check first are.

1 That the main valve coming into your house is fully open.

2 Then check that any valves on the line to the shower is fully open.

3 Check that the inlet filter is clean on the inlet pipe to the shower

4 check also around the tco in the centre of the heating can for any blackened wires etc.

madhatter2426 · Posted: Mon Jul 13, 2009 9:51 pm

yes the room light does seem to flicker when the shower goes hot then cold. what should i be getting as a reading from the tco using a meter. The cold water valve coming into the house is fully on. I will check the inlet valve on the shower tomorrow. Also the tco if you can post what it should be measuring across it's terminals.

seco services · Posted: Mon Jul 13, 2009 9:55 pm

the tco is just a cutout it should have power bothsides if the cutout was to operate it will loose power on the side feeding the elements.
look for mains power around 230v AC
you can't do a ohms test on a tco.

if the light is flickering check it not wired into the supply side of the pullcord etc and the pullcord has a bad connection first.

if you isolate the main fuse at the consumer box for the shower and the light won't work you know its wired into the shower fuse rather than the lighting circuit.

madhatter2426 · Posted: Thu Jul 16, 2009 7:28 pm

Thanks to all. New tco arrived from Miras cost about £10.05. Fitted it, now got a hot shower again.

seco services · Posted: Thu Jul 16, 2009 7:39 pm

glad its sorted now.

madhatter2426 · Posted: Sun Sep 13, 2009 8:29 am

Well new one has just gone. Think it might be faulty. Only lasted 2 months.

seco services · Posted: Sun Sep 13, 2009 12:38 pm

that didn't last long did it.

has the shower been working ok from when you fitted new tco ?
as in turning the temp up the shower was hot
and turning temp down shower would go to just cold ?