GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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One wired controller controlling multiple IDUs
Two wired controllers controlling multiple IDUs
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 button to select parameter code P13. Press ―MODE‖ button to switch to
setup of parameter values. Then the parameter value will blink. Press button or button to
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