Gree GMV-224WM/B-X, Service Manual

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GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
93
follows:
LED1 LED2 LED3
Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode
n5
On
00
Blinking
00
Blinking
Step 2: Press "SW7" to send the project number offset command. The master module is displayed as
follows:
LED1 LED2 LED3
Function Code Display Mode Current Progress/Mode Display Mode Current Status Display Mode
n5 On 00 On OC On
After 10 seconds, the system quits this mode and restores the normal operation mode.
Note: This function only needs to be set on the master system, which is the system with the centralized
control address SA2 DIP switch being "00000". For details, see the "Centralized Control Address DIP
Switch (SA2_Addr-CC)" section.
2. Function Query Operations
Step 1: Open the commissioning window of the master unit panel.
Step 2: Power on the entire unit.
Step 3: Press "SW4" on the master unit to enter the query status.
Step 4: Select a function to be queried by pressing "SW1 (UP)" or "SW2 (DOWN)" on the master 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.