shower gets too hot

[stevec000]

im sure this is a commom question
can someone tell me that if my shower is running and someone runs a tap or flushes the w.c the temp gets really hot in the shower for about 1 min.

its a brand new combi boiler we got 1 year ageo when we moved in (worcester) this never happened in our old house?
i have young children so this iw a worry!

[woofgang]

Its not the boiler, its the mixer valve in the shower...either its an old one that never had a thermostat or the thermostat is shot.

[sophie_1003]

Ours does that and the shower is brand new. I don't mind to much as no matter what I try I can't get the shower to go up to the temperature I want!

[coccinelle]

In my house it's the opposite; someone uses a tap somewhere else and the shower goes cold.

[sophie_1003]

too*

[GRUMPY]

I agree with wolfgang for safetys sake get it checked out by a qualified heating engineer

[GRUMPY]

Apologies Woofgang

[stevec000]

the shower is also only one year old??

[The Builder]

Possibly the shower isn't one that is designed to run off a combi, or it's not thermostatic, or, as someone has mentioned, the cartridge in the shower is faulty.

Perhaps you could tell us the make and model of the shower valve.