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