Operation And Maintenance; Before Operation; Test Operation - Gree GMV-N12U/C-T(U) Owner's Manual

controller, the first bit of S2 dial code of adapter connected to the third party controller is
adjusted to "1", and the first bit of S2 dial code of the other adapters is adjusted to "0" and
connect to Gree wired controller.
③ When AHU-KIT adapter adopts the third party controller, AHU-KIT adapter needs to
connect to Gree wired controller while setting the master IDU. The methods for setting the
master IDU through the wired controller are as follows:
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.

7 Operation and Maintenance

7.1 Before Operation

① Before initiating operation, please read the operation manuals of outdoor unit, AHU-KIT unit and the air
handling unit carefully.
② Refer to the installation manuals of the outdoor unit, AHU-KIT unit and the remote controller about settings
of unit.

7.2 Test Operation

Before executing "test operation" as well as before operating the unit, you must check the
following:
(1) Refer to the section of "For the following items, take special care during construction and
check after installation is finished".
(2) Ensure the construction of refrigerant piping, drain piping and electric wiring are finished.
(3) Check everything written in the installation manuals of the outdoor unit, AHU-KIT unit and
the air handling unit.
(4) Open the gas side stop valve.
(5) Open the liquid side stop valve.
Executing the test operation:
(1) Referring to the manuals of the outdoor unit and the air handling unit.
(2) Confirm that the fan of the air handling unit is ON.
NOTICE
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