I have just tried to replace my old Potterton EP2001 Central Heating and Hot Water timer with an EP2. As you know it is a very easy exercise (even for me!) as the back plates are identical.
However, the central heating won't come on (HW works though). I have tried various configurations of the Programmer, particularly 7 (Fully Pumped) which the Installer Guide says is the programme for the EP2002.
Worryingly, there is no mention of an EP2001 in the guide but I read that the EP2002 was the replacement for the EP2001.
I know that there is nothing wrong with the CH valves or pump as I have hot wired the back plate connectors 4 and 5 together and am enjoying the CH (have also switched on the immersion in the hot water tank).
Can anyone help?
However, the central heating won't come on (HW works though). I have tried various configurations of the Programmer, particularly 7 (Fully Pumped) which the Installer Guide says is the programme for the EP2002.
Worryingly, there is no mention of an EP2001 in the guide but I read that the EP2002 was the replacement for the EP2001.
I know that there is nothing wrong with the CH valves or pump as I have hot wired the back plate connectors 4 and 5 together and am enjoying the CH (have also switched on the immersion in the hot water tank).
Can anyone help?