Sorry i just responded to a message you left last year.
I still need to know if you got the pin seals and where from.
I've just got my Ace High going again - a fan problem.
I had to check the pump - you can tell if it's working by feeling the pump body for a gentle whirring or by placing a...
Have got the same problem with leaking pin on DHW microswitch as you posted about 2 years ago. Can you tell me where you got the new seals as i can't find them anywhere.
Could your low heating temperature be due to
1. blockage/air lock in feed pipes
2. worn out pump
Good luck
