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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.
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 Indoor communication checking
Communication available, display 1111;
Indoor unavailable, display ----
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)
15 No definition Insignificance
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