Midea MUE-18HRFNX-QRD0 Technical Manual page 90

2) Address setting
a. One non-polarity controller can control up to 16 indoor units.
b. When the non-polarity controller is connected to several units, every air-conditioner in network has only one
network address to distinguish each other.
c. Address code of air-conditioner in LAN is set by code switch ENC1(Duct and Ceiling& Floor) or ADSS(Cassette)
of the indoor unit, and the set range is 0-15.
d. Note: The indoor units are controlled at the same time, not independently. The purpose of setting network
address is identify the unit when error occurs.
 Page 90 
Unit1
HA HB
HA HB
Wired controller
Unit2
HA HB
Unit16
HA HB