1 power on self-test
2 time indication
3 preset of water level
4 preset of water temperature
5 water temperature indication
6 water shortage alarming
7 water refill in shortage
8 temperature-control water refill
9 manual water refills
10 timing water refill
11 compulsory water refills
12 water refill under low hydraulic pressure
13 automatic pressurization
14 thermal retardation of pipeline
15 automatic overflow proof
16 automatic pressurization
17 water quality setting