While you wait for answers, we may have found some information which could help you.
Click here for Replacement Motor Heating
How to replace Potterton EP 3002 with EP 2?
Potterton EP2000 - pump control?
Potterton Prima 60F- can you start it manually?
My potterton boiler keeps losing water pressure and condens?
Potterton heatmax combi?
Replace potterton mini minder Es?