GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
90
unit. By default, the A7 outdoor silent mode is displayed for query.
For example, select the A6 unit cooling/heating function. The display is as follows:
LED1
LED2
LED3
Function Code Display Mode ODU Function Mode Code Display Mode ODU Function Mode Code Display Mode
A6
On
nA
On
nA
On
Step 5: If the n8 IDU address query is selected, the display is as follows. Enter the to-be-confirmed
status of IDU project number query.
LED1
LED2
LED3
Function Code
Display Mode Current Progress/Mode Display Mode
Current Status Display Mode
n8
Blinking
00
Blinking
00
Blinking
Press "SW7" and select the IDU project number query on the master unit. The master unit is
displayed as follows. Other modules are displayed in normal status.
LED1
LED2
LED3
Function Code
Display Mode
Current Progress/Mode Display Mode
Current Status
Display Mode
n8
On
00
On
00
On
Regardless of the current display status of wired controllers or display panels of all IDUs, the current
display status is all switched to the IDU project number. However, it does not influence the settings and
operation status of outdoor and IDUs.
On the master unit, press "SW6" to return to the upper level. The IDU retains the project number
display status.
On the master unit, press and hold "SW6" to quit the address display status for all IDUs and return
to the upper level.
If no quit button operations are performed on the master unit for 30 minutes, the function setting
automatically quits and the unit restores the current status.
Step 6: If the n9 IDU address query is selected, the display is as follows:
LED1
LED2
LED3
Function
Code
Display
Mode
Number of IDUs (Thousands-place
Hundreds-place)
Display
Mode
Number of IDUs (Tens-place
Ones-place)
Display
Mode
n9
On
00
On
00
Blinking
The digital LED2 displays the number of IDUs (thousands-place hundreds-place) and the digital
LED3 displays the number of IDUs (tens-place ones place). For example, if the number of IDUs is 75,
"0075" is displayed.
If no button operations are performed on the master unit for five minutes, the function setting
automatically quits and the unit restores the current status.
Note:
The online IDU quantity query function applies to a single refrigerating system only.
Step 7: If the n6 fault query is selected, the display is as follows. Enter the to-be-confirmed status of
fault query.
LED1
LED2
LED3
Function Code
Display Mode Current Progress/Mode
Display Mode
Current Status
Display Mode
n6
Blinking
00
Blinking
00
Blinking
Press "SW7" on the master unit to confirm fault query.
Select a fault to be queried by pressing "SW1 (UP)" or "SW2 (DOWN)". LED3 alternately displays
