Hot water taking over in the shower

[cwallis1955]

When I have a shower, I turn the hot on first, then the cold. As I adjust the temperature, the hot takes over, I turn the hot down and cold up. The hot has to be turned near off to get the temperature right. Please, how do I rectify this issue.

 

[Maryplumb]

Is the shower supplied by a hot water tank or a combi boiler?
Roughly how old is it? Has it worked well before?
Have you had any plumbing or heating work done recently?

 

[Chris1955]

Is the shower supplied by a hot water tank or a combi boiler?
Roughly how old is it? Has it worked well before?
Have you had any plumbing or heating work done recently?