Test Operation And Debugging - Gree FGR20Pd/DNa-X Owner's Manual

Ducted Type Split Air-Conditioner Units(Inverter Series)
Check items
Is the air inlet/outlet blocked?
Length of refrigerant pipe and the
charging amount of refrigerant are
recorded or not?
Binding pieces on compressor feet
are removed or not?

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 refrigerant. In case that the required
charging quantity is not reached 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.
Possible conditions due to
improper installation.
Insufficient cooling (heating)
capacity.
The refrigerant charging
amount is not accurate.
Compressor may get
damaged.
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Check