Potterton EP2002

[Renee21]

Can anyone advise me. I have a Potterton EP2002 and my central heating will not switch off. This is an intermitant problem

 

[ChrisR]

DO the lights "Behave" on the programmer?
If not, probably dud programmer
If so, probably sticking motorised valve.

 

[Renee21]

The lights are working fine but when central heating is supposed to switch off on timer it doesn't. Could this be the Patterson timer that is faulty

 

[namsag]

More than likely it is the motorised valve that the clock controls. D o you have a 3 port valve or 2 two port valves

 

[Renee21]

As you probably have guessed I am a novice at this how would I find out if it is a 2port or three port valve and is it something I could repair myself

 

[corgigazza]

had this same model prog unable to turn of last week

If u slide the programmer to the off position do the lights go off, if not it may be the progammer, there fore needeing a new programmer, for now turn the room stat up down and the water will turn of when your cyliner is up to temperature.

 

[Soggy_weetabix]

These programmers fail as the NICAD battery causes all sorts of faults.

Replace the battery first as its a 10 quid job.

Turn the power off to your heating system..... does the timer lose its time?

David