We may have found other answers which could help you.
Click here for Panel Starts FlashingPotterton Perfoma 24. Hot water works fine No heating?
Potterton Prima 30F?
How to replace Potterton EP 3002 with EP 2?
Pressure gauge on a Potterton Boiler?
Potterton EP2000 - pump control?
potterton 16/22 pilot lihght out?