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