While you wait for answers, we may have found some information which could help you.
Click here for Light Works Hot WaterMyson Touch?
has my central heating pump started to seize/jam up?
Pressurising a Myson Marathon free standinding boiler 50B?
Myson velaire oil pump?
re: Myson Main Masquerade as Fire?
Boiler coming up but heating and hot water not working?