Worcester Combi

[confused 2]

My Worcester Heatslave 9.24 Combi will not shut down, ie CHeating on all the time, will this just be the programer and is there an easy fix or will I need to replace the whole unit ???are they still available ??

Thanks

 

[ollski]

What make and model is the programmer?...something like the horstman tiara 425?.If you get a multimeter on the live from the clock to the boiler and it has 230v on it with the switches off then yes programmer.

 

[ChrisR]

Does it overheat too?

Check the switch on the diverter isn't stuck in the HW ON position.

 

[confused 2]

Thanks ChrisR you were right, diverter valve stuck open, is there any point messing with it or do I need to renew the full unit????