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The following switches are included in the master PCB board of the outdoor unit.
Press button: SW2, SW1 are the button switches.
Rotary switch: SW9, SW10, SW11, 0~15 can be set.
Display section: LD1, LD2, LD3, LD4, digital tube. During startup and commissioning, you can
identify failures in the system by selecting the indoor unit to review with switch SW9 and SW10,
and selecting the function to review with SW11.
①
Indoor parameter
Check the parameters of indoor whose address is from 1 to 64.
SW11 is set from 3~15 to check indoor parameter.
SW9 and SW10 show indoor unit number.
Electric wiring and the application
SW9
SW10
System address
0
0-15
1- 16 units (indoor PCB address DIP switch 0#-15#)
1
17- 32 units (indoor PCB address DIP switch 16#-31#)
2
33- 48 units (indoor PCB address DIP switch 32#-47#)
3
49- 64 units (indoor PCB address DIP switch 48#-63#)
SW11
Function
Digital tube LD1~4 display
3
Communicates in inspection and
program version
Communication normal display program version;
Communication gap normal display 0000,
communication has been display - not normal
4
Indoor abnormal
Display indoor failure code; no failure, display 0
5
Indoor capacity
Indoor capacity, 1.5HP displays 1.5
6
Indoor EEV opening angle
Electronic expansion valve(EEV) opening angle
7
Indoor ambient temp. Tai
Ambient temperature -2 degree displays -2
8
Indoor gas pipe temp. Tc1
Gas pipe temperature -2 degree displays -2
9
Indoor liquid pipe temp. Tc2
Liquid pipe temperature -2 degree displays -2
10
Indoor startup mode, actual fan
speed, SCODE code
LD1: startup mode. 0: stop C: cooling H: heating
LD2: actual indoor fan speed (0- stop, 1- low, 2-
middle, 3- high)
LD3 and LD4: SCODE code (0 -15).
Eg. C311 means cooling, high speed SCODE is 11.
11
Indoor set temp. Tset
Set temperature, 16 degree displays 16
12
Wiring malfunction check
0: normal
79: wiring connection failure ( no display on indoor)
13
NO definition
insignificance
14
NO definition
insignificance
15
No definition
Insignificance
Monitor tools
