Gree GMV-680WM/E-X Manuel D'utilisateur page 60

GMV DC Inverter VRF
If there's no or not enough refrigerant in the system to meet the requirement of operation
startup, system will display U4 "refrigerant shortage protection" and fails to start next progress.
Then check if there's any leakage or add refrigerant inside until error eliminated.
——
Debugging code Progress code
LED1
progress
Display
Code
09_Refrigerant
judgments before db
startup
Step 14: progress 10 is "Status judgments of outdoor valves before startup"
If master unit displays below, status judgments are enabled.
——
Debugging code Progress code
LED1
progress
Display
Code
10_Status
judgments of
db
outdoor valves
before startup
If unit detects that valve status is not normal, it will display as below:
——
Debugging code Progress code
LED1
progress
Display
Code
10_Status
judgments of
db
outdoor valves
before startup
Then check the big and small valves whether they are fully turned on. After the check,
press SW6 return button to restart the judgments.
If unit detects that valve status is normal, it will display as below and start next progress.
——
Debugging code Progress code
LED1
progress
Display
Code
10_Status
judgments of
db
outdoor valves
before startup
Step 15: progress 11 is "Calculate refrigerant quantity manually"
No need to operate. System will start next progress.
Step 16: progress 12 is "Confirm debugging startup"
In order to make sure all preparation work is done before startup, this step is designed for
user to confirm the startup again. Operate as below:
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.
LED2
Display
code Code
status status
Light 09 Light
LED2
Display
code Code
status status
Light 10 Light
LED2
Display
code Code
status status
Light 10 Light
LED2
Display
code Code
status status
Light 10 Light
Status code
LED3
Display
status
System refrigerant is not enough.
O4 Light System downtime equilibrium pressure
is lower than 0.3MPa.
Status code
LED3
Display
status
ON Light Outdoor valves are being turned on.
Status code
LED3
Display
status
U6 Light Outdoor valves are not fully turned on.
Status code
LED3
Display
status
OC Light Outdoor valves are turned on normally.
57
Meaning
Meaning
Meaning
Meaning