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?
max of 50 degrees hot water?
water goes cold during shower?
what does F14 mean and F5?
were do I get a diagram and information on airpressureswitch 105he?
no domestic hot water?
charging system up?
pressure switch?
Fan light flashing?
burner going of after 2 or 3 minutes and on?
water sensor?
gas neoon flashing?