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2.11 Trial operation
1. Confirmation by electrifying
Before the outdoor unit is powered on for the first time, the first and second bit (BM1-1, BM1-2) of dip switch
code BM1 of the outdoor unit PCB board should be turned to OFF. Power supply for outdoor, indoor units and
valve box should be checked according to the table below.
No.
1
Whether there is power on interface board of the outdoor unit, whether the digital tube is
displaying and whether the displayed data on dip switch panel and the tube are variable.
2
For VRF outdoor unit, indoor unit and valve box number displayed on the digital tube is
consistent with the actual number when dip switch panels SW9, SW10 and SW11 are turned
to "0 3 2", and dip switch code BM1-2 is turned from OFF to ON.
3
For VRF outdoor unit system, outdoor unit number displayed on the digital tube is consistent
with the actual number when dip switch panels SW9, SW10 and SW11 are turned to "0 1 2",
and dip switch code BM1-1 is turned from OFF to ON.
4
For VRF outdoor unit system, the HP and quantities of outdoor unit sets displayed on the
digital tube is consistent with the actual unit type and quantities when dip switch panels SW9,
SW10 and SW11 are turned to "0 1 2"
AV08CMVUSA shows "1-08"
AV10CMVUSA shows "1-10"
AV12CMVUSA shows "1-12"
AV14CMVUSA shows "1-14"
AV16CMVUSA shows "1-16"
AV18CMVUSA shows "2-18"
...
AV32CMVUSA shows "2-32"
AV34CMVUSA shows "3-34"
...
AV48CMVUSA shows "3-48"
5
Check whether the parameters, such as parameters of outdoor unit sensors, number of
indoors connected and the opening of electronic expansion valves, etc., are correct through
dip switch on the outdoor unit interface board or by using testing equipment and computer
software.
6
Check whether the parameters, such as parameters of indoor unit sensors, the opening of
electronic expansion valves, etc., are correct through dip switch on the outdoor unit interface
board or by using testing equipment and computer software.
Note:
If the indoor unit and valve box cannot be searched or the number of the searched units isn't consistent with the
actual number of indoor units and valve box in the system within four and a half minutes, it will be reported as
communication fault 26-X.
2. Rated operation
Startup control on indoor and outdoor units and operation condition inspection for outdoor units can be completed
through rated operation. In case of inspection on single indoor unit, wired controller or remote controller of indoor
unit will be adopted for control.
Rated cooling operation: when SW9, SW10 and SW11 dip switches are turned to 0, 13, 2,the indoor units will be
started up automatically and be forced to turn to cooling operation.
Rated heating operation: when SW9, SW10 and SW11 dip switches are turned to 0, 14, 2, the indoor units will be
started up automatically and be forced to turn to heating operation.
Contents to be confirmed
87
Result
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