Gree GMV6 DC Inverter VRF Units Service Manual
Maximum Amount of Refrigerant to Be Recycled
Refrigerant recycle can be divided to two modes: fault module refrigerant recycle and indoor unit
pipeline refrigerant recycle.
Refrigerant Recycle
Refrigerant Recycle Mode Name Remarks
01
Indoor unit pipeline refrigerant
recycle
This mode is selected when an indoor unit is faulty,
and the refrigerant in the indoor unit pipeline needs
to be recycled to the outdoor unit.
02 Basic module refrigerant recycle
This mode is selected when a basic module is
faulty, and the refrigerant in the basic module
needs to be recycled to other pipelines and
After entering refrigerant recycle, the outdoor unit automatically starts, and recycles the refrigerant
to the pipeline of the outdoor unit or indoor unit.
Setting steps:
Step 1:
Enter A2 refrigerant recycle, and ensure that the master module displays as follows:
LED1 LED2 LED3
Function code Display status Current process Display status Current status Display status
A2 On 01 Blinks 00 Blinks
Step 2:
When the default value 01 is displayed, press the SW1 up button and the SW2 down button
to select the corresponding recycle mode. Press SW3 to confirm the selected mode.
Press the SW4 back button on the master module to return to the previous process or exit the function
setting status.
If you do not press any button in 5 minutes, the system will automatically exit the current screen and
the unit will resume displaying the current status.
Indoor unit pipeline refrigerant recycle:
Step 3:
Select 01 in step 2 to enter indoor unit pipeline refrigerant recycle. The LEDs of all basic
modules display as follows:
LED1 LED2 LED3
Function code Display status Current process Display status Current status Display status
A2 On 01 On [Module low pressure Ps] On
LED3 shows the low pressure value of the module. If it is negative, LED3 circularly displays negative
value code "nE" and the numerical value every 1 second. For example, for –30, LED3 circularly displays
nE for 1 second, and 30.
Step 4:
When the system prompts for manual operation of refrigerant recycle, press SW3 on the
master unit to confirm refrigerant recycle. The entire system will stop immediately, and cannot be restarted
in 10 minutes. After 10 minutes, the system will exit refrigerant recycle, and enter standby status.
Then, press the SW4 back button to return to the previous process to resume the standby status of
the entire system. (During setting, press SW4 to return to the previous process. If the setting is completed,
press SW4 to resume the unit to the current normal working status.)
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