No hot water

[oliver]

Recently my hot water, supplied from combi boiler stopped working.
I've just had boiler seen to and despite long and expensive checking engineer found no faults, but hot water still doesn't work. He suggested fault lies with mixer taps on bath or kitchen sink.
Before I start buying new taps, is this a possible reason for there to be only cold water?


Thanks for any replies.

 

[Simon F]

do you have isolation valves to the cold taps?

isolate the colds then run the hot, if it is still not working then you have proved that the boiler is at fault.
if isolating the cold to the taps does make a difference then you have proved it is the tap.

 

[josh]

hmm surely he should have proved the boiler is working to you rather than just say that

 

[Ermintrude]

Hasn't got hot and cold on boiler mixed up?

 

[josh]

I would rule that out as it did work and it's not a boiler change?
hall effect probably stuck if not a mixing issue as said

 

[AWheating]

have you had any other work done before the problem started?

did the engineer prove the hot water worked?

 

[MK_Swans]

What's the make and model of boiler?

The likelihood of 2 mixer valves failing at the same time is unlikely to say the least!

Are there any separate taps on other basins or sinks in the house?

What did your plumber check in order to come to his conclusion?

 

[Ermintrude]

I would rule that out as it did work and it's not a boiler change?
hall effect probably stuck if not a mixing issue as said

Hot and cold reversed can work fine on a boiler for weeks and weeks. I know I have done it.

 

[GasmanxxxR1]

Had this last week, turned out shower mixer was forcing cold down the hot. NRVs sorted it, hope this helps

 

[MK_Swans]

Had this last week, turned out shower mixer was forcing cold down the hot. NRVs sorted it, hope this helps

Just be be careful not to put NRV too close to boiler! I had a glow worm flexicom kept blowing o rings on its dhw exchanger!