Gree GMV5E Series Service Manual page 86

GREE
Model of Basic Module
GMV-400WM/E-X
GMV-450WM/E1-X
GMV-450WM/E-X
GMV-504WM/E-X
GMV-560WM/E-X
GMV-615WM/E-X
This function falls into two modes: faulty module refrigerant recovery and IDU pipeline refrigerant
recovery.
Refrigerant Recovery
Mode Code
01
02
When this function is enabled, the ODU automatically starts and recovers refrigerants to the ODU or
IDU pipeline.
(2) A6 Unit cooling/heating function
This function sets operation modes of the entire unit, including:
Function Mode of ODU
Code Name
nA Cooling/Heating
nC Single-cooling
nH Single-heating
nF Air supply
The user or administrator can set operation modes of the ODU based on actual situations to prevent
conflicts.
When it is required to set different refrigerating systems to the same function mode, set the master
system according to the above requirements. For the master system settings, see the "Centralized
Control Address DIP Switch (SA2_Addr-CC)" section.
(3) A7 Outdoor silent mode
This function is used when users require lower environment noises, including nighttime automatic
silent mode and forcible silent mode.
For the nighttime automatic silent mode, the system automatically judges the highest daytime
environment temperature and then starts silent operations in a certain interval to guarantee nighttime
low-noise operations. The nighttime automatic silent mode falls into nine categories:
Silent Mode Code
Mode 1 01
Mode 2 02
Mode 3 03
Mode 4 04
Mode 5 05
Refrigerant Recovery
Mode Name
Indoor unit pipeline This mode is selected when an IDU fails and it is required to
refrigerant recovery recover refrigerants from the IDU pipeline to the out door units.
This mode is selected when a basic module fails and it is required
Basic module
to recover refrigerants from this basic module to the other out
refrigerant recovery
door units and pipeline.
Cooling mode, dehumidifying mode, heating mode, and air supply mode.
(Note: The heating mode cannot work with other modes at the same time.)
(factory settings)
Cooling mode, dehumidifying mode, and air supply mode.
Heating mode and air supply mode.
(Note: The heating mode cannot work with the air supply mode at the same
time.)
Air supply mode.
Starting the Silent Mode X Hours
after the Daytime Temperature
Reaches the Highest
6
6
8
8
10
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
Maximum Refrigerant Recovery Volume (kg)
11.5
11.5
12.3
18.4
Remark
Operation Mode of IDU
Stopping the Nighttime
Silent Mode after Continual
Operations for Y Hours
10
12
8
10
8
82
Noise Degree
Low-noise mode