Gree GMV-VQ280WM/C-X Owner's Manual page 58

Fig.3.9.9 One wired controller controls one IDU
When two wired controllers control multiple IDUs, the wired controller can be connected to any
one IDU, provided that the connected IDU is of the same series. Meanwhile, one and only one of the
wired controllers must be set as a slave controller. At most 16 IDUs can be controlled by wired
controllers and the connected IDUs shall be within a same IDU network.
No matter when unit is turned on or off, slave controller can be set.
How to set a slave controller: hold "function" button on the designated controller for 5s, and
temperature zone displays C00. Continue holding "function" button for 5s and setting screen of
controller parameter will come out. Default temperature zone displays P00.
Press button or
Fig.3.9.11 One wired controller control multiple IDU
Fig.3.9.12 Two wired controllers control multiple IDU
button to select parameter code P13. Press "mode" button to switch to
GMV Heat Recovery DC Inverter VRF
Fig.3.9.10 Two wired controllers control one IDU
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