Gree GMV-VQ680WM/C-X Service Manual page 53

Gree
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
Function code Display status
A2
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.
4.1.2.3.2 "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
Code Name
Cooling and
nA
heating
nC Cooling only
nH Heating only
nF 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
Function code Display status
A6
Step 2: Press the SW1 up button and the SW2 down button to select the corresponding
cooling/heating mode.
Current process
On 02
Available Indoor Unit Operation Modes
Cooling, dry, heating, and fan
(Note: Heating mode cannot run with other modes at the same time.) (Default setting)
Cooling, dry, and fan
Heating and fan
(Note: Heating mode cannot run with other modes at the same time.)
Fan
Current process
On nC
GMV6 HR DC Inverter VRF Units Service Manual
LED2
Display status Current status
On
LED2
Display status Current status
Blinks
51
LED3
Display status
Module high
On
pressure
LED3
Display status
nC Blinks