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18
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Electrical installation
Installer and user reference guide
64
TO IN/D
TO OUT/D
N
L
N L
P
P
F
F
T
T
1
2
1
2
1
2
b
P
P
1
2
c
a Outdoor unit
b Indoor unit
c User interface
d Most downstream indoor unit
Group control or 2 user interfaces control 1 indoor unit
TO IN/D
TO OUT/D
N
L
N L
P
P
F
F
T
T
1
2
1
2
1
2
b
P
P
1
2
c
a Outdoor unit
b Indoor unit
c User interface
d Most downstream indoor unit
With BS unit
c
a Outdoor unit
b BS unit
c Indoor unit
d User interface
a
N
L
N
L
N L
N L
P
P
F
F
T
T
P
P
F
F
T
T
1
2
1
2
1
2
1
2
1
2
1
2
P
P
P
P
1
2
1
2
a
N L
N L
P
P
F
F
T
T
P
P
F
F
T
T
1
2
1
2
1
2
1
2
1
2
1
2
F
F
F
F
1
2
1
2
a
TO IN/D
TO OUT/D
F
F
F
F
1
2
1
2
b
OUTDOOR UNIT
INDOOR UNIT
N
L
N L
P
P
F
F
T
T
1
2
1
2
1
2
P
P
d
1
2
N
L
d
N L
P
P
F
F
T
T
1
2
1
2
1
2
P
P
1
2
d
N L
P
P
F
F
T
T
1
2
1
2
1
2
P
P
P
P
1
2
1
2
VRV system air conditioner
4P747548-1 – 2023.11
FXKQ-A
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Troubleshooting
