loss of hot water in en suite from combi boiler

[italiancat]

all of my hot water taps work except the one in my ensuite, which will only put cold water to both the hot water tap and the shower. It is all on the same system without any extra valves etc isolating the en suite and there seems to be no problem with pressure. Hot water comes perfectly from all other taps and bath. It is a baxi boiler with a preheat function - when the preheat is on I only get hot water for 2 secs then it goes back to cold. The whole system is only 18months old . Can anyone help me please!!!!!! winter is coming!

[gasman]

I Suspect the problem is with your tap not the boiler the jumper or washer may have lodged into the seating so you can not turn on the hot. Take the tap apart and have a look at the washer / Jumper or insert. Depending on what type it is you should be able to free it , Re-washer it or fit new inserts to it. Good luck

[italiancat]

I have isolated the cold water to the tap by way of the one way valve and also the shower comes through cold as well so does this rule out the tap fault?

[bubblebubble]

I had a mate with exactly the same.....it just happened one day. he could 'trick' the thermostatic shower valve by turning the bath on and off, but used to fill the bath with a bucket! it turned out that (reason unknown) the bath tap had more flow than any other tap and the boiler could not keep up. The boiler flow output was adjusted and all was well.good luck!