Haier MRV S II - Electric Installation

3838
9. Electric Installation
Communication wiring gure
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQABC
PQ
ABC
ABC
ABC
ABC ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
ABC
Control wire for wired
controller with polarity
Outdoor 1
Indoor 1
Indoor 6
Indoor 11
Indoor 2
Indoor 7
Indoor 12
Indoor 16
Indoor 3
Indoor 8
Indoor 13
Indoor 17
Indoor 4
Indoor 9
Indoor 14
Indoor 18
Indoor 5
Indoor 10
Indoor 15
Indoor 19
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
Wired
controller
Wired
controller
Wired
controller
The outdoor and all indoor units are in parallel through 2 non-polar wires.
Three wiring methods between wired controller and indoor unit:
A. 1 to multi (group control) : one wired controller controls 2~16 indoors, as shown in above gure, 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 polar wires.
B. 1 to 1 (one wired controller controls one indoor) : as shown in above gure, indoor 6~ indoor 19, indoor and
wired controller are connected by 3 polar wires.
C. 2 to 1 (two wired controller controls one indoor) : as shown in above gure, 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.