Hot water to all of my house except master bathroom

[Geohowden]

I have a Vaillant ecotec plus 838 boiler and yesterday morning I used the shower in my master bathroom and it was working fine with plenty of hot water, however that evening I went to have a shower and there was no hot water, so I tried the bath and tap in that master bathroom and there was no hot water there, however the taps in the rest of my house and my upstairs shower work fine with plenty of hot water, what could be stopping it from coming to my master bathroom?
Attached are pictures of the boiler setup

 

[Deleted member 120897]

The hot water in the affected bathroom, is it fed from boiler directly or via the unvented cylinder?

 

[Unvented cylinder reply]

The hot water in the affected bathroom, is it fed from boiler directly or via the unvented cylinder?

I am not entirely sure as I havent had the house long, the small cylinder on the wall to the left of the boiler seems to be connected to the main big water tank to the right of the boiler if I trace the pipe from it.

 

[Deleted member 120897]

Ignore the small cylinder on the wall for now as this is an expansion vessel for the unvented cylinder. I’d say it’s either a boiler issue or cylinder issue. Does water actually run, just not hot?

 

[Unvented cylinder reply]

Ignore the small cylinder on the wall for now as this is an expansion vessel for the unvented cylinder. I’d say it’s either a boiler issue or cylinder issue. Does water actually run, just not hot?

Yes the water runs, with full pressure, just not hot in that room, but hot in the other parts of the house

 

[Deleted member 120897]

Yes the water runs, with full pressure, just not hot in that room, but hot in the other parts of the house

Again, boiler or unvented issue.

 

[Unvented cylinder reply]

Thank you, is there anyway I can fix this?

 

[Deleted member 120897]

Thank you, is there anyway I can fix this?

Not entirely sure. Vast majority of work on boilers and unvented cylinders need to be worked on by gas safe registered engineers and G3 engineers respectively.

 

[EvilDrPorkChop]

It looks as if some part of your house is fed from the combi boiler, and the rest off the Unvented cylinder.

The easiest way to work out what is what is run the hot tap in the part of the house that is working. If the tap comes on the front of the boiler on the screen that means it's fed off the combi. If it doesn't and gets hot then it's fed from the cylinder.

I suspect that your main bathroom would be fed from the Unvented cylinder, hence why you might have no hot water.

 

[Deleted member 120897]

It looks as if some part of your house is fed from the combi boiler, and the rest off the Unvented cylinder.

The easiest way to work out what is what is run the hot tap in the part of the house that is working. If the tap comes on the front of the boiler on the screen that means it's fed off the combi. If it doesn't and gets hot then it's fed from the cylinder.

Was going to suggest this, but wasn’t 100% sure, so thank you.