SiSG121917E
Wiring Error Check Function
Part 7 Trial Operation and Field Settings
186
Notes
In a multi system with 2 ports (Port A and Port B), LED 1 and LED 2 indicate wiring to Room A
and Room B respectively. The LED that blinks first and second indicate piping Port A and Port B
respectively.
Suppose that the LEDs blink as illustrated below.
In this example, Port A and wiring to Room B are connected to the same room and Port B and
wiring to Room A are connected to another room. Incorrect wiring is then corrected
automatically.
1. Wrongly connected liquid and gas pipes cannot be self-corrected. Be sure to make the liquid
pipe and the gas pipe in pairs.
2. To cancel the wiring error check procedure halfway, press the wiring error check switch
again.
In this case, the memory of the microcomputer returns to its initial status (Room A wiring
Port A piping, Room B wiring
Port B piping).
3. When replacing the outdoor unit PCB, be sure to use this function.
4. Make the priority room setting after wiring error check. If you set the priority room before
wiring error check, the prioritized room may be changed after self-correction.
A 1 2 3 4 5
A 1 2 3 4 5
A 1 2 3 4 5
(R22004)
Green Red
Green Red
Green Red
L
E
D
L
E
D
L
E
D
(R22274)
A
B
A
B
W
iring
O
u
tdoor
u
nit
Indoor
u
nit
Piping
W
iring
Piping
