Skyline Energy SX-20BZA, Installation Manual, Page: 49 / 51

5. Time limit setting by password
◆
Installer can set limited running time, when heat pump total running time reach preset time,
heat pump will be locked, can’t start to work anymore.
◆
Time limit setting can be removed, details can be consulted operating panel introduction.
6. Water tank temperature display correction function
◆
If F3 setting is 0, water tank temperature display correction function is invalid.
◆
If F3 setting is not 0, water tank temperature display temp = water tank real temp + F3
7. When electric heater working only, circulating water pump can be forced to start.
If F2 setting is 1, when electric heater start, circulating water pump will start 3sec in advance.
When electric heater stops, circulating water pump will delay 3sec to stop. Factory setting of F2
is 1.
8. Reserved ports on PC board
Programming port: convenient to download the site program.
Rs485 port: Open type RS485-RTU protocol port, convenient to extend system function. Such
as, add remote telephone controlling module, heat pump can be controlled by telephone. If
connect RS485 port to computer, heat pump can be controlled by controlling centre of computer.
Part 6. Details of PC board
1. DIP switch
Switch code 1 2 3 4
Off (figure side) 3phase H cooling Air source Hot water
ON 1phase Only heating Water source Swim pool
Other DIP switch
Heat pump No Switch 5 Switch 6 Switch 7 Switch 8