Gree GMVVQ224WM/C-X Owner's Manual page 58

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
setup of parameter values. Then the parameter value will blink. Press
code 02. And then press "confirm/cancel" to finish setting.
Press "confirm/cancel" to return to the previous display until you exit from the setup of parameter
values.
Below are user's parameter settings:
Parameter Parameter
code name
Set up address
P13 for wired
controller
3.9.7 Other Communication Connection Methods
For the communication connection among indoor units, between ducted type indoor unit and the
receiving light board, please refer to the indoor unit manual.
3.10 Check Items after Installation
Check items
Each part of the unit is installed securely?
Gas leakage test is taken or not?
Unit gets proper thermal insulation or not?
Drainage is smooth or not?
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Is the electric wiring and pipe connection installed
correctly?
Unit is securely grounded or not?
Power cord meets the required specification?
Is the air inlet/outlet blocked?
Length of refrigerant pipe and the charging
amount of refrigerant are recorded or not?
Fig.3.9.13 Two wired controllers control multiple IDUs
button to select parameter code P13. Press "mode" button to switch to
Parameter scope
01: master wired
controller
02: slave wired
controller
GMV Heat Recovery DC Inverter VRF
Default
value
When 2 wired controllers control one or more
IDUs, they shall have different addresses.
01
Slave wired controller (02) can't set up units'
parameters except its address.
Possible conditions due to improper installation
Unit may drop, shake or emit noise
Insufficient cooling (heating) capacity
There may be condensation and dripping.
There may be condensation and dripping.
Unit may have malfunction or components may
get damaged.
Unit may have malfunction or components may
get damaged.
Electrical leakage
Unit may have malfunction or components may
get damaged.
Insufficient cooling (heating) capacity
The refrigerant charging amount is not accurate.
54
button or button to select
Remark
Check