Airwell YEVFD Series, Service Manual

Page: 44 / 92

The outdoor and all indoor units are in parallel through 2 non-polar wires.
And the ground wire of the outdoor unit should pass through the buckle magnetic ring. Three wiring methods
between wired controller and indoor unit:
A. 1 to multi (group control): one wired controller can control 2~19 indoors. As shown in above figure, indoor
1~indoor 5: indoor 5 is wired control master unit, the others are wired control slave units. Wired controller and
the master indoor (directly connected to wired controller) is connected by 3 polar wires; the other indoors and the
master indoors are connected by 2 or 3 polar wires, AC indoors wired "B" "C" polar wires, DC indoors wired "A" "B"
"C" polar wires*.
B. 1 to 1 (one wired controller controls one indoor): as shown in above figure, indoor 6~ indoor 18, indoor and wired
controller are connected by 3 polar wires.
C. 2 to 1 (two wired controller controls one indoor): as shown in above figure, indoor 19. Either of wired controllers
can be set as master wired controller, and the other is slave wired controller. Master/slave wired controller, and
master/indoor are connected by 3 polar wires.
When indoor is controlled by remote controller, refer to the "wired control master unit/wired control slave unit/remote
control unit table".A, B, C on signal terminal block need not wires and not connect the wired controller.
Communication wiring figure
Outdoor 1
Indoor 1
Indoor 6
Indoor 11
Indoor 2
Indoor 7
Indoor 12
Indoor 3
Indoor 8
Indoor 13
Indoor 4
Indoor 9
Indoor 14
Indoor 5
Indoor 10
Indoor 15
Indoor 19
Control wire for wired controller with
polarity
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
Wired
controller
*
Indoor 16 Indoor 17 Indoor 18
Wired
controller
Wired
controller
Wired
controller
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