No hot water in bath or shower

[tamsproject]

I went on holiday for two weeks, before I went all my water was working the way it should. When I was on holiday the mains water supply at a different location burst everyone's water got turned off until they fixed the problem. When I come back from holiday there was no pressure in the hot water in the bath the water was just trickling out. 1 week on my shower has now got to pressure in the water just trickling out. The other shower in the house next to the bath works fine. The sinks in the toilet have all got pressure hot and cold. The rest of the house the water is all working as normal. I have a combi boiler downstairs and an unvented system upstairs for the hot water.Could this be an air lock or is this highly unlikely with the unvented system.

 

[Deleted member 120897]

Are all affected hot outlets fed from the unvented cylinder? The shower that does work is this fed from the unvented cylinder?

 

[tamsproject]

Are all affected hot outlets fed from the unvented cylinder? The shower that does work is this fed from the unvented cylinder?

Yes all the hot water comes off the unvented cylinder, the shower that does work comes from the same supply. The bath hot tap does not work then 7feet away the shower works as normal.