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