No hot water upstairs

[Liamc94]

Hi all,

all of a sudden there is no hot water coming out of the taps upstairs, well sometimes it will get warm for a couple of minute then go stone cold. When I turn on the hot water the boiler doesn’t even kick up, odd occasion it will then straight off and it’s back to cold.

the hot water downstairs works fine, turn on the tap, boiler kicks up and the water is boiling with in minutes.

Can anyone shed any light as to why this is?

thanks !

 

[Gasmk1]

what boiler is it, from description your tap upstairs does not have enough flow to allow the hot water flow switch to activate. It is more Than likely a boiler problem so get a RGI to look at it

 

[John.g]

Could be the flow switch but strange that no hot water upstairs with both hot tap and shower both on, hot tap gives > 7 LPM on its own, hot tap downstairs may give a very high flowrate but does look like boiler (oil or gas) fault.

 

[Liamc94]

We’ve spoke to a few people today and they have suggested it could be the Diverter valve or something? Does this sound like something it could be?

 

[Gasmk1]

I said flow switch to make it easier for you to understand that is why I asked which model of boiler is it

 

[Liamc94]

I said flow switch to make it easier for you to understand that is why I asked which model of boiler is it

Oh I see, it’s a ideal c30 independent

 

[John.g]

If its still producing hot water downstairs can you measure the hot tap flow only, this will help to confirm that its the flow switch problem.

 

[SimonG]

Did we rule out a passing mixer? My money is still on that.

 

[exedon2]

As boiler is really a logic maybe flow turbine and or sensor?

 

[Liamc94]

Quick update,

just had a guy out he says it’s a passing mixer something about water just keeps going round that’s why it’s going cold so we’ve ordered one he’s told me how to do it so wish me luck

 

[SimonG]

Post #2.

 

[Liamc94]

Post #2.

You called it mate 👍 thank you and thanks to everyone else who tried solving the problem

 

[John.g]

Post #2.

A winner! but just thinking, why wouldn't this also affect the downstairs hot water?.

 

[SimonG]

A winner! but just thinking, why wouldn't this also affect the downstairs hot water?.

Waters lazy, will take path of least resistance. Or that's my thinking on it.