Gree GMV-VQ680WM/C-X Service Manual page 75

Gree
units, quantities of the indoor and outdoor units, and commissioning completion status.
Restoration to default settings 2 (clearing all settings except the commissioning status)
On the main board of the master unit, press and hold the SW2 down button and SW4 back button
for over 10 seconds to clear all the system settings. All modules display as follows:
Meaning
Restoration to default
settings 2
At this time, the system clears all settings, including engineering numbers of the indoor and outdoor
units, but stores quantities of the indoor and outdoor units, and commissioning completion status.
Restoration to default settings 3 (clearing only function settings of the outdoor unit)
On the main board of the master unit, press and hold the SW3 back button and SW4 back button for
over 10 seconds to clear all the system settings. All modules display as follows:
Meaning
Restoration to default
settings 3
At this time, the system clears all settings, but stores engineering numbers of the indoor and
outdoor units, quantities of the indoor and outdoor units, and commissioning completion status.
4.1.4 Fire Alarm Function Setting
The VRF unit system reserves a fire alarm interface "CN44", which connects with the external fire
alarm system. In case of an external fire, the unit urgently shuts down for protection based on the
received signal. Then, the unit enters the standby status.
4.2 Mode Exchange Box
4.2.1 DIP Switch Settings
Code Name
Parallel
SA1 connection
code
Parallel connection code
branches. It is set to 0000 by default.
If all branches connect to indoor units not exceeding 16 kW, keep the default setting of this DIP
switch.
LED1
Address Display
code status
ADD On
LED1
Address Display
code status
ADD On
Meaning
Set the parallel control of the
box branches
(SA1) of mode exchange box is used to set the parallel control of the box
GMV6 HR DC Inverter VRF Units Service Manual
LED2
Function Display
code status
02 On
LED2
Function Display
code status
03 On
Default
Setting
The code is used only for
connecting to the indoor unit with
0000 capacity of over 16 kW.
Otherwise, keep the default
setting.
73
LED3
Display
Status code
status
Blinks for 3
0C
seconds
LED3
Status Display
code status
Blinks for 3
0C
seconds
Remarks