Gree GMVVQ224WM/C-X

GMV Heat Recovery DC Inverter VRF
54
Fig.3.9.13 Two wired controllers control 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 select
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
code
Parameter
name
Parameter scope
Default
value
Remark
P13
Set up address
for wired
controller
01: master wired
controller
02: slave wired
controller
01
When 2 wired controllers control one or more
IDUs, they shall have different addresses.
Slave wired controller (02) can’t set up units’
parameters except its address.
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
Possible conditions due to improper installation
Check
Each part of the unit is installed securely?
Unit may drop, shake or emit noise
Gas leakage test is taken or not?
Insufficient cooling (heating) capacity
Unit gets proper thermal insulation or not?
There may be condensation and dripping.
Drainage is smooth or not?
There may be condensation and dripping.
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Unit may have malfunction or components may
get damaged.
Is the electric wiring and pipe connection installed
correctly?
Unit may have malfunction or components may
get damaged.
Unit is securely grounded or not?
Electrical leakage
Power cord meets the required specification?
Unit may have malfunction or components may
get damaged.
Is the air inlet/outlet blocked?
Insufficient cooling (heating) capacity
Length of refrigerant pipe and the charging
amount of refrigerant are recorded or not?
The refrigerant charging amount is not accurate.