While you wait for answers, we may have found some information which could help you.
Success
Message
no domestic hot water?
charging system up?
pressure switch?
were do I get a diagram and information on airpressureswitch 105he?
Fan light flashing?
burner going of after 2 or 3 minutes and on?
max of 50 degrees hot water?
no hot water and pressure valve is on red and water is leakiing outside?
water sensor?
what does F14 mean and F5?
water goes cold during shower?
gas neoon flashing?