Gree GMV-S280W/A-X

GMV5 Home DC Inverter Multi VRF Units
267
cables between
ODUs are broken.
3. Communication
cables between
ODUs are in poor
connection.
4. The controller
is faulty.
CC
No controlling unit
SA800
The SA8 dial switch
of the ODU is not
switched to 00.
SA8
The SA8 dial switch
of the ODU is faulty
1 SA800Switch the SA8 dial switch of one of ODU to 00;
2 SA800Replace the control board or switch an ODUs SA8
dial switch to 00.
CF
Multiple controlling
units
SA800
SA8 dial switches of
multiple ODUs are
switched to 00.
Dial switches of
multiple ODUs are
faulty.
1 SA80011Leave one SA8 dial switch unchanged, while
switch all the other dial switches to 11;
2 Replace the main control board.
L7
No master IDU
The master IDU is
powered off.
The communication
of the master IDU
fails.
The main board of
the master IDU is
faulty.
No master IDU is
set in the system.
Check if the master IDU is powered on. If yes, replace the
main board;
C0Check the contact of the communication cable of the
master IDU. If no communication failure (C0) is reported,
replace the main board.
Replace the IDU's main board and reset the master IDU.
Set the master IDU.
C5
Project number
conflict
Multiple IDUs share
one project number
1Reset the repeated project number
Fa
ult
co
de
Fault
Possible causes
Solution