Gree FGR20Pd/DNa-X Manual De Usuario página 20

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
(8) For the convenience of troubleshooting during debugging, unit shall be connected to a PC
with applicable debugging software. Make sure unit's real-time data can be checked
through this computer. The installation and connection of debugging software can be
found in the Service Manual.
(9) Before test operation, make sure unit is power on and compressor has been preheated for
more than 8 hours. Touch the unit to check whether it's normally preheated. If yes, start
test operation. Otherwise, compressor might be damaged.
(10) If the LED digital tube on main board displays _ _ _ _, then input the startup password.
For operation details, please see the instructions for the function of startup password.
4.2.2 Test Operation and Debugging
Description of test operation procedures and main board display of ODU
——
Progress
01_ Set master
unit
02_ Allocate
addresses
03_ Confirm the
quantity of ODU
04_ Confirm the
quantity of IDU
05_ Detect
ODU's internal
communication
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Description of each stage of debugging progress
Debugging Code
LED
Display
Display Code
Code
Display
01/CC
repeatedly
Display
01/CF
repeatedly
Display
01/OF
repeatedly
02 Flicker
Display
02/L7
repeatedly
Display
02/OC
repeatedly
03/QTY of Display
module repeatedly
Display
03/OC
repeatedly
Display
04/Cb
repeatedly
Display
04/oC
repeatedly
Display
05/C2
repeatedly
Display
05/oC
repeatedly
Instruction for Code and Operating Method
There is no master unit in the system. The system cannot
continue to conduct debugging, and all the buttons are
invalid that must be reset by cutting the power.
There are two or more master units in the system. The
system cannot continue to conduct debugging, and all the
buttons are invalid that must be reset by cutting the power.
There is only one master unit in the system. The unit will
automatically enter into the next step after display for once.
The system is allocating addresses. It will display asbelow
after 10 seconds:
There is no master unit. The display will last for 1 minute,
within this 1 minute, the master IDU can be set by
debugging software. If the master IDU has not been set
within this 1 minute, the system will automatically set the
IDU with the minimum IP address as the master IDU.
The system has finished allocating the addresses, there is
master IDU.It will automatically enter into the next step's
operation after displaying for once.
Confirmation of quantity of modules in the system. If the
actual quantity of ODU is inconformity with the displayed
quantity, please check the dial code and wire connection
and then conduct debugging for confirmation.
If the actual quantity of ODU is in conformity with the
displayed quantity, press SW3 button to confirm. After
confirmation, all the module nixie tubes will repeatedly
display ―0 3‖ and ―0 C‖, after displaying for once, the system
will automatically enter into the next operation.
It is not allowed to connect more than one indoor unit in the
system. Please check and debug again to confirm.
The quantity of IDU in the system has been confirmed.It will
enter into the next step.
Communication between master control and driving of ODU.
Please check if the communication wire between mainboard
and driving board of ODU is correctly connected, if it is,
enter into the next step. If the ODU should be powered off
for the debugging, after re-energizing the unit, please
conduct debugging from the above 01 step.
The communication between master control and driving of
ODU are normal. After displaying for once, it will
automatically enter into the next step.
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