Gree GMV-N07G/A3A-D(U), Service Manual

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Multi Variable Air Conditioners Indoor Unit for North America
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Method 1:
Step 1: Set an IDU to power-off status.
Step 2: Press and hold the "MODE" button on the wired controller for more than five seconds.
Step 3: Check whether the setting is successful. If it is, "MASTER" on the wired controller will be on.
Otherwise, repeat steps 1 and 2.
Method 2:
Step 1: Press and hold the ―FUNCTION‖ button for five seconds in power-on or power-off status to
enter the parameter query interface.
Step
2: Press and hold the ―FUNCTION‖ button for five seconds in "C00" status to enter the
parameter setting interface.
Step 3: Press ―▲‖ or ―▼‖ to switch level 2 parameter codes till ―P10‖ is displayed on the temperature
area.
Step 4: Press the ―MODE‖ button to set the parameter to "01" and then Press the ―ENTER‖ button. If
the setting is successful, "MASTER" on the wired controller will be on.
4.1.2 Master IDU Display
For IDUs connected with wired controllers, "MASTER" on the wired controller connected with the
master IDU will be on.
For IDUs embedded or connected with LED panels, the operation LED on the LED panel of the
master IDU will blink three times.