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Signal Wiring Drawing
Outdoor 1
Indoor 1
Outdoor units are of parallel connection via three lines with polarity. The master unit, central control and all indoor
units are of parallel connection via two lines without polarity. The singal line between wired controller and indoor
units are polarity
There are three connecting ways between wired controller and indoor units:
A. One wired controller controls one indoor unit, the wired controller connects with the ABC terminal of indoor unit.
Indoor
B. Two wired controllers control one indoor unit. Either of the wired controls can be set to be the master wired
controller while the other is set to be the slave wired controller.
Indoor
Master and slave controller setting method for YR-E17, other controllers' setting method please refer to the
controller manual
No.
Select the master or
SW1-1
the slave controller
Outdoor 2
Outdoor 3
Indoor 2
Indoor 3
Wired
controller
Wired
Wired
controller
controller
Type
State of switch
C
Indoor 4
ON
Slave controller
OFF
Master controller
160
Indoor 5
Function description
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