Gree GMV-950WM/G-X User Manual

GMV DC Inverter VRF
58
If there is no refrigerant in the system or the amount of refrigerant does not meet the requirements
for starting operation, the unit will display U4 “Refrigerant-lacking protection”, as shown below. The
unit will enter into the next step. At this time, it is necessary to check whether there is a leak or charge
some refrigerant until the abnormality is eliminated.
— Debugging code Progress code Status code
Meaning
Progress
LED1 LED2 LED3
Code
Display
status
Code
Display
status
Code
Display
status
09_refrigerant judge
before start up
db ON 09 ON U4 ON
The refrigerant in the system is
insufficient. Please charge
refrigerant until the fault
disappears.
Step 13: Unit debugging step 10 is “status judgment of main pipeline before starting”.
If the main module displays as below, it indicates the unit is starting the operation for judgment.
— Debugging code Progress code Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Cod
e
Display
status
10_ status judgment of
main pipeline before
starting
db ON 10 ON ON ON Starting and operating.
If the unit has detected the abnormal status, the display is as below:
—
Debugging code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Cod
e
Display
status
10_ status
judgment of
main pipeline before
starting
db ON 10 ON U6 ON Main pipeline is abnormal.
At this time, it is necessary to check whether the gas valve and the liquid valve are completely
open or whether the main pipeline is blocked. Once inspection is completed, you can return to the
previous step by pressing SW4 button to re-enter the judgment.
If inspection valve of the unit is normal, the display is as below. The unit will automatically enter
into the next step.
—
Debugging code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Cod
e
Display
status
10_ status judgment of
main pipeline before
starting
db ON 10 ON OC ON
The main pipeline is turned on
normally.
Step 14: Unit debugging step 11 is “reserved function”.
The main module display is as below. The unit automatically enters into the next step.
—
Debugging code
Progress code
Status code
Meaning
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Cod
e
Display
status
11_ reserved function
db
ON
11
ON
AE
ON
—
Step 15: Unit debugging step 12 is “reserved function”.
The master module display is as below. Then the unit automatically enters into the next step.

Gree GMV-950WM/G-X Specifications

General

Brand	Gree
Model	GMV-950WM/G-X
Category	Inverter
Language	English