Gree GMV5E Series Service Manual page 136

GREE
(2) Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following
information:
LED1
Function Code
n5
(3) When project number deviation is to be confirmed, short press SW7 confirmation button to enter
the project number deviation status as shown in the following:
LED1
Function Code
n5
IDU project numbers in all systems will automatically deviate. The conflict will be solved in about 1
minute and the system will work properly.
The automatic deviation function only works when it is enabled on the controlling unit in the system,
of which the centralized control address is 00000.
Note: When there are only a few conflicting IDUs, manual setting is recommended. This method
only applies to conflicting IDUs and does only affect other IDUs' project numbers.
In case of many conflicting IDUs, auto deviation is recommended. This method is faster, but may
change project numbers of normal IDUs. This method applies for the first commissioning after
installation.
Fault
Fault
code
Communication
failure between main
C2 control board and
inverter compressor
drive
Compressor drive
P3 module reset
protection
Inverter compressor
P5 over-current
protection
Compressor drive
P6 IPM module
protection
Compressor drive
P7 temperature sensor
fault
Compressor drive
IPM
P8
over-temperature
protection
LED Status Progress
Solid On
00
LED Status Current Progress/Mode
Solid On 00
Possible reasons
1.The control board is powered off;
2.The compressor drive board is powered
off;
3.The communication cable between the
control board and compressor drive board
is not connected;
4.The compressor drive board's dial
switch SA201 is wrong.
1.The compressor drive board is faulty.
1.The drive board's IPM module is
damaged;
2.The compressor's UVW cable is not
connected properly;
3.The compressor is damaged.
1.The drive board's IPM module is
damaged;
2.The compressor's UVW cable is not
connected properly;
3.The compressor is damaged.
1.The compressor drive board is faulty.
1.The compressor drive board is faulty;
2.Thermal gel is not applied evenly on the
IPM module;
3.The IPM module is not screwed
properly.
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
LED2
LED Status
Solid On
LED2
LED Status
Solid On
1.Check the power supply of the control
board. Replace the control board if it works
properly;
2.Check the power supply of the drive
board. Replace the drive board if it works
properly;
3.Connect the main board and drive board
using the communication cable;
4.Adjust the dial switch of the compressor
drive board.
1.Replace the compressor drive board.
1.Replace the compressor drive board;
2.Reconnect the compressor's UVW cable;
3.Replace the compressor.
1.Replace the compressor drive board;
2.Reconnect the compressor's UVW cable;
3.Replace the compressor.
1.Replace the compressor drive board.
1.Replace the compressor drive board;
2.Apply thermal gel evenly on the IPM
module;
3.Screw the IPM module properly.
132
LED3
Status LED Status
OC Solid On
LED3
Status LED Status
OC Solid On
Solution