Gree GMV-839WM/G-X - Page 50

Gree GMV6 DC Inverter VRF Units Service Manual
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Note:
After refrigerant recycle, the system cannot be restarted within 10 minutes.
Basic module refrigerant recycle:
Step 3:
Set the basic module that needs refrigerant recycle to emergency status, close the liquid
pipe stop valve of the module in emergency status, and then select 02 in step 2 to enter refrigerant recycle
of the basic module, as shown below:
LED1 LED2 LED3
Function code Display status Current process Display status Current status Display status
A2 On 02 On
Module high
pressure
On
LED3 displays the high pressure value of the module.
Step 4:
When the high pressure value displayed by LED3 continuously blinks (if the high pressure
is below 0, 0 is displayed), quickly close the air pipe stop valve of the emergency module, and press SW3
on the master unit to confirm refrigerant recycle. The entire system will stop immediately. If the high
pressure value displayed by LED3 continuously blinks and you do not operate in 3 minutes, the system
forcibly stops.
Press the SW4 back button on the master module to return to the previous process or exit the function
setting status.
Note:
Before the refrigerant recycle of a basic module, the liquid pipe stop valve of the basic module must
be closed. After refrigerant recycle, the system cannot be restarted within 10 minutes.
4.2.3.2 "A6" Cooling/Heating of the Entire System
Introduction:
This function sets the cooling/heating mode of the entire system. Available modes include:
Outdoor Unit Function Mode
Available Indoor Unit Operation Modes
Code Name
nA
Cooling and
heating
Cooling, dry, heating, and fan
(Note: Heating mode cannot run with other modes at the same time.) (Default setting)
nC Cooling only Cooling, dry, and fan
nH Heating only
Heating and fan
(Note: Heating mode cannot run with other modes at the same time.)
nF Fan Fan
The user or administrator needs to set the mode of the outdoor unit based on the actual usage to
avoid conflicts.
Setting steps:
Step 1:
Enter A6 cooling/heating setting of the entire system, and ensure that the master module
displays as follows:
LED1
LED2
LED3
Function code
Display status
Current process
Display status
Current status
Display status
A6
On
nC
Blinks
nC
Blinks
Step 2:
Press the SW1 up button and the SW2 down button to select the corresponding
cooling/heating mode.