Test Operation And Debugging - Gree FGR50Pd/DNa-M Owner's Manual

4.2 Test Operation and Debugging

NOTES!
① After finishing the first installation or replacing the main board of outdoor unit, it is
necessary to perform test operation and debugging. Otherwise, unit won't be able to
work.
② Test operation and debugging must be performed by professional technicians or
under the guidance of professional technicians.
4.2.1 Prepare The Test Operation and Debugging
(1) Do not connect power until all installation work is finished.
(2) All control circuits and wires are correctly and securely connected.
(3) Check whether the fixing loops for compressor foots are removed.
(4) All small pieces, especially metal chips, thread ends and forceps holder, must be
removed from the unit.
(5) Check whether unit's appearance and pipeline system has been damaged during
transportation.
(6) Calculate the quantity of refrigerant that needs to be added according to the pipe length.
Pre-charge the
while refrigerant can't be added, record the quantity of refrigerant that still needs to add
and complement the quantity during test operation. For details of adding refrigerant
during test operation, see below.
(7) After refrigerant is added, make sure valves of outdoor unit are completely open.
(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
Once the unit is energized and turned on for the first time, the display tube of outdoor unit
displays "A0", which indicates debugging standby status. At this time, hold SW3 button
successively for 5s on the main module to enter into the automatic debugging, and then the
engineering debugging will perform according to the set procedures. Step3(conformation of
outdoor unit' quantity) and step4(conformation of indoor unit' quantity) should be confirmed
manually by pressing "SW3", while other procedures will be performed automatically. Once the
refrigerant. In case that the required charging quantity is not reached
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Ducted Type Split Air-Conditioner Units(Inverter Series)