Ducted Type Split Air-Conditioner Units(Inverter Series)
20
Check items
Possible conditions due to
improper installation.
Check
Is the air inlet/outlet blocked?
Insufficient cooling (heating)
capacity.
Length of refrigerant pipe and the
charging amount of refrigerant are
recorded or not?
The refrigerant charging
amount is not accurate.
Binding pieces on compressor feet
are removed or not?
Compressor may get
damaged.
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.
