Mira Thermostatic Sport shower - help

[RugbyGirl]

hi,

we have had a mira thermostatic sport shower installed this year.

Recently it has started losing pressure slightly but in an odd way.

When it starts up it will adjust to the correct pressure by losing the pressure slighly for a couple of seconds then go back to the correct pressure, now it does this for the duration of the shower. It also loses temperature slightly.

It does this when there no other water running, or if you have a tap on/washing machine.

Does anyone have any ideas on the cause? it doesnt seem to make a difference if you change the temperature on it and it only gets used 2-3 times a day (and cleaned regularly)

thanks

 

[RugbyGirl]

also, on the shower it doesnt have a light to show low flow etc, just the on button

 

[HERTS P&D]

Take off the shower head and see if it still does it.

Andy