boiler problem

[sioux4]

just had new pump fitted but got couple of cold radiators have bled them but has made no difference and hot water tank is not heating up - it used to get extremely hot but now it is lukewarm It is a coal fire back boiler
can anyone help please?

 

[kevplumb]

check the header tank has water in it

 

[Agile]

Whoever changed the pump should have checked the system to ensure it was working properly.

Call him back!

Tony

 

[bengasman]

Did the cold rads get hot before you had the pump changed?