Worcester Boiler No hot water

[carriesue]

Had a plumber around to connect loft shower and basin. Since then I have had no hot water (tepid ). He states that he has not touched the boiler and that it maybe the thermostat has gone. A friend suggested that the pressure may need to be looked at. Any suggestions please as the loft conversion people are going to charge me for getting an engineer out.
Thank you for your help

 

[Puddle]

could be just the flow rate has been increased through boiler and requires reducing to original level

 

[carriesue]

Thank you. All was working until the shower and basin was installed. Loft people are saying it has nothing to do with them. I really can't afford major repairs, so will suggest your answer to them.

 

[WHPES]

Sounds to me like cold water feeding into the hot side from a stuck shower check valve on your new shower.

 

[oldplumber]

did they add a towel rail/ rad if so check system pressure first. How is hot water in kitchen? or is that cold now a well

 

[WHPES]

Sorry I assumed the boiler pressure would have already been checked.

 

[carriesue]

Thank you all for your response. There is only a short blast of tepid water then cold from ALL hot water taps. Towel rail has been fixed but not heating.
I am unable to adjust the pressure as the grey knob has a piece of metal attached to it, similar to a paper clip.
I would have thought the loft people would have checked this before diagnosing a thermostat problem.
Thank you

 

[P4ULT]

is it possible the hot and colds have been crossed somewhere along the line.

 

[steve hayward]

Had a plumber around to connect loft shower and basin. Since then I have had no hot water (tepid ). He states that he has not touched the boiler and that it maybe the thermostat has gone. A friend suggested that the pressure may need to be looked at. Any suggestions please as the loft conversion people are going to charge me for getting an engineer out.
Thank you for your help

hi im a heating engineer and came across the same problem a while ago its caused by your shower im afraid , when you turn a tap on the hot water is being pulled into the hot water thus resulting in luke warm water at point of delivery . you need to fit a combi compatible shower . hope this helps

 

[carriesue]

Thank you for your advice Steve,