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