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Electric Wiring and Applications Cont.
3. System Status Display and Control (host)
SW1 SW2 SW3 Function Digital tube LD1 - 4 Display
0 0 2 Refrigerant type 410A represents 410A refrigerant
0 1 2
The same outdoor unit total number
and total capacity
LD1: The total number of outdoor unit
LD2: Display “-”
LD3/ LD4: Total outdoor unit capacity (unit: Horse)
For example: 3-48 said 3 outdoor machines, with a total
capacity of 48 horses
0 2 2 Total indoor unit capacity 50 represents 50 kbtu/h
0 3 2
The indoor units within the same
system
For example: 64
0 4 2 Number of indoor units working
Temperature sensor ON as a sign of the work of the
indoor unit
00 5 2
With the outdoor unit running mode
the same indoor unit number
For example: 13
0 6 2 Cooling target temperature
Unit: °F
0 7 2 Heating target temperature
0 8 2
Automatic recovery of refrigerant
NOTE: the end of the recovery
must be canceled or reset
When the outdoor stops, press START (SW5) for 2 s,
display 1111, start. (the outdoor is set to work in a state
of operation)
Press STOP (SW6) for 2 s, display 0000, stop
0 10(A) 2
Test run setup
NOTE: the end of the test run must
be canceled or reset
When the outdoor stops, press START (SW5) for 2 s,
display 1111, start. (the outdoor is set to work in a state
of operation)
Press STOP (SW6) for 2 s, display 0000, stop
0 11(B) 2 Outdoor unit mode 0-normal, C-only cool H-only heat
0 12(C) 2
Indoor unit expansion valve fully
open
Press START (SW5) for 2 s, display 1111, indoor
valve fully open 2 minutes, 2 minutes after the
automatic shutdown valve
0 13(D) 2 All the indoor unit for cooling
Press START (SW5) for 2 s, display 1111, fully open;
Press STOP (SW6) for 2 s, display 0000 closed
0 14(E) 2 All the indoor unit for heating
0 15(F) 2
Cancel all manual control (running
class)
Press START (SW5) for 2 s, display 1111 cancel; or
press STOP (SW6) for 2 s, display 0000, cancel
Remove all manual control (part), closed indoor unit