Gree GMV6 DC Inverter VRF Units Service Manual
246
Check whether the unit
is the master or slave
module
Power off the unit and
replace the main board
DIP setting
Checking
communication status
Setting of master unit
engineering
commissioning status
System parameter
setting
Removing procedure
(1) Check whether the unit is the master or slave module.
①
It can be checked by the “master module setting DIP SA8” of the ODU.
There is only one master module in a refrigeration system (set in the power-off status). The master
module is defined as follows: (the ON position on the DIP identification is “0”, the opposite direction is the
status of “1”). If SA8 is set to 00, it is the master module. If SA8 is set to 10, it is a slave module.
Master module status
Slave module status
②
It can be checked by the display of the digital LEDs on the main board of the ODU.
When the master module is powered on, the LED1 shows “01”. The digital LEDs of a slave module
show “02”, “03” or “04” (as shown in the following figure).
Summary of Contents for GMV6 Series
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