Gree GMV-680WM/E-X Manuel D'utilisateur page 53

(2) When debugging starts, system will operate according to the ambient temperature.
When outdoor temperature is above 20℃, debugging shall be in cooling mode.
When outdoor temperature is below 20℃, debugging shall be in heating mode.
(3) Before debugging, confirm again whether the cut-off valve of each basic module is fully
turned on.
(4) During debugging, front panel of the outdoor unit must be fully closed; otherwise,
debugging accuracy will be affected (see below).
(5) Before debugging, make sure the needed amount of refrigerant has been added to the
pipe or at least 70% of the needed refrigerant has been added.
(6) Description of each stage of debugging progress:
Debugging
——
code
LED1
progress
Display
Code
status
db light
db light
01_Set up
master unit
db light
db light
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Fig. 5.2.1
Fig. 5.2.2
Description of each stage of debugging progress
Progress code Status code
LED2 LED3
Display
code Code
status
01 light A0
01 light CC
01 light CF
01 light OC
50
GMV DC Inverter VRF
Meaning
Display
status
light System is not debugged.
System doesn't have master unit.
light
Reset master unit.
More than 2 master units are set. Reset
light
master unit.
Master unit is successfully set. Start
light
next progress.