Multi Variable Air Conditioners Duct Type Indoor Unit
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5.5 Instructions on Connecting Wired Controller and IDU Network
(1) Communication between IDU and ODU is D1 while communication among each IDU is D2.
(2) Communication between IDU and wired controller is H1, H2.
(3) One indoor unit can connect two wired controllers (master wired controller and sub-master
wired controller).
(4) One wired controller is able to control 16 indoor units at the same time. (shown in Fig 5.7)
NOTICE:
① When the wired controller is controlling multiple indoor units at the same time, the indoor
units must be of the same model.
② When two wired controllers are controlling the indoor units, you need to set an address for
each wired controller. Address No.1 refers to master wired controller while address No.2
refers to sub-master wired controller. They should not share the same address. For specific
setting methods, please refer to installation manual of wired controller.
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