Gree GC201808-III, Service Manual

Page: 167 / 362

GREE GMV5 HR HEAT RECOVERY UNITS
163
LED1 LED2 LED3
Function Code LED Status Progress LED Status Status LED Status
n3 Flicker 00 Flicker 00 Flicker
n4 Flicker 00 Flicker 00 Flicker
n5 Flicker 00 Flicker 00 Flicker
(2)
Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following
information:
Fdsfsgdgdfgdfgdfgfdgdfgfdgsdgdf
LED1 LED2 LED3
Function Code LED Status Progress LED Status Status LED Status
n5 Solid On 00 Flicker OC Flicker
(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 LED2 LED3
Function Code LED Status Current Progress/Mode LED Status Status LED Status
n5 Solid On 00 Solid On OC Solid On
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
code
Fault Possible reasons Solution
C2
Communication failure
between main control
board and inverter
compressor drive
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. 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.
P3
Compressor drive
module reset protection
1. The compressor drive board is faulty.
1. Replace the compressor drive
board.
P5
Inverter compressor
over-current protection
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. Replace the compressor drive
board;
2. Reconnect the compressor's UVW
cable;
3. Replace the compressor.