shower issue, boiler controlled

[Foxyuk]

hi guys,

i have one flat i rent out its got a worcester boiler my tenant is complaining that when she turns on the shower it starts off hot then all of a sudden goes cold... the heating of rasdiators is fine and no ones turning taps on at same time,

any ideas?

 

[SimonJohns]

Do the other taps work fine
If yes. The shower is broken
Replace it or change the cartridge

 

[truemanufan]

Also could be a fault finder in manufacturers instructions. May offer an alternative or a customer service number just in case it's a common problem with that model.

 

[JCplumb]

Without more info it would be impossible to give you an answer.
What type of boiler, what type of shower, is the water supply shared etc..

 

[Foxyuk]

hi guys i will get more info and post ... the shower is a gronde kohler ( similar to mira excel) and not a cartridge one, she has advised that it happens sometimes when taps and running also.