central heating timer

[taffe]

hi there my mothers heating was making a very strange noise and i thought is was the pump which i changed but the noise was still there
after checking the new pump i notched the pump wasn't getting any power to start working so i bypassed the pump to a power socket and turned the heating on again and everything is working ok.
so does this mean the timer control is not working and if so are they straight forward to change.
taffe

 

[ChrisR]

What timer is it - and what boiler too?

 

[taffe]

sorry not sure of the top of my head!

 

[taffe]

my mother has just phoned the noise started again its like the water is boiling in the pipes took a while to happen this time.
may be the control panel has packed up and its not telling the boiler to shut of