Potterton EP2002 Controller Problem?!

[peteward15]

Just moved to a new house and the heating system is only a few years old (as old as the house) and the controller is a Potterton EP2002. When the heating is on it doesn't always bring the house up to the temperature of the thermostat. For example it just comes on for approx an hour until the rads are hot and then it stops, even if we are well below the minimum temperature on the thermostat.

If I turn the controller onto advance or continuous on the same applies.

Right now the house is frezzing and the rads are just tepid and no matter what I do I can't get it to fire. Any Ideas?!

Or do you think its the controller that is playing up?

Thanks....

 

[Gas2Air]

THe EP2002 has had problems, there is a kit to change them. However are the motorised valves/valve opening, does the pump run on demand from the clock? What boiler do you have? ETC.

 

[peteward15]

THe EP2002 has had problems, there is a kit to change them. However are the motorised valves/valve opening, does the pump run on demand from the clock? What boiler do you have? ETC.

Thanks for the reply. The boiler is a Suprima 40. It makes no odds whether you are running through the clock or manually turning it on to continous.

 

[Gas2Air]

It maybe the thermistor on the boiler, if the clock and room stat are demanding heat and the pump is running with the boiler off/idle for long periods i'd have that checked first, that and the infamous Suprima board.

 

[peteward15]

It maybe the thermistor on the boiler, if the clock and room stat are demanding heat and the pump is running with the boiler off/idle for long periods i'd have that checked first, that and the infamous Suprima board.

Being a newbie I wasn't aware that the Suprima board is now infamous! Why So? Is it notoriously dodgy or something??!?

 

[Gas2Air]

Yes if it hasn't been modified, that or the gas valve do you reset the boiler often? It may well be a system fault if not at the boiler.

 

[urbanspaceman]

potterton/baxi now provide a complete modification kit for the suprima boilers

 

[geoff@cetltd]

not that it's much of an improvement

except to Potterton's coffers, that is

 

[peteward15]

After reading another thread on these boards I tried turning the boiler thermostat down from the maximum (where it was when I moved in) down to approx half way. Strangely enough it seems to be working a lot better. The boiler now seems to fire when the thermostat and clock are demanding heat.

Do you guys think this is a fluke and the problem will come back or it might have solved it??!

Thank you all for your replies by the way! And is there a way of telling if my system has had "the modification"?!?