GREE Photovoltaic Direct-driven Inverter Multi VRF Units
153
(2) Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following
information:
(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
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.
P6
Compressor drive IPM
module 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.
P7
temperature sensor
1. The compressor drive board is
faulty.
1. Replace the compressor drive board.
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