It would be grateful if someone can help with this problem.

There is no hot water from the shower head but there is hot water for bath and basin. This is a mix tap for shower and bath.

I have checked the boiler and it works fine.

The situation is that there will be hot water coming from shower head if I keep cold water tap both running at basin and bath. So I think it might not be enough water pressure for hot water to shower.

Is it because of no enough water pressure for hot water to shower?

I will hope it is a small problem to sort out by myself.

Many thanks!

Hi Iris

More than likely, you have a mixing spool that has become defective here... certainly not a pressure issue... ;)

How many single lever taps do you have?

Let me know, OK?

Mark