Dismantle front lateral board
Open up outdoor wire-cross hole and put on square wire-cross diagram.
Induce connection wire out from 6 bit wiring board on outdoor unit, drill through outdoor wire-cross hole
and indoor wire-cross hole, and connect the wire to the 6 bit wiring board on indoor unit. Please refer to
the following diagram for power line wiring.
Secure lines with fixation clamps after wiring as the diagram.
Signal connection
line on outdoor unit
Signal connection line
Checking the phase sequence:
Phase sequence protection:
How to adjust phase sequence:
The pressure protection:
When there is phase sequence protection, the fan of indoor and outdoor unit will run, but the compressor
will not run, or will run with abnormal noise.
The product is equipped with antiphase protector to make sure that when the compressor is in the
antiphase situation (below three phase), the power will be cut off immediately, so the compressor will
not work while the motor of indoor and outdoor unit can still work. The protector has an indicator, which
will light up only when the phase sequence is correct and without antiphase. When the indicator doesn't
light up, it indicates accidents to be handled. Refer to how to adjust the phase sequence to solve the
accident.
If there is an accident, please cut off the power immediately. To adjust the phase sequence
exchange the random two poles of the three external line L1/L2/L3 on wiring layout of the power wire, or
exchange random two poles of line 2 4 6 on the AV contactor directly. Two steps are needed to
adjust the phase sequence of the conditioner with phase sequence protector: first, make sure that the
phase sequence of the compressor is consistent with that of the phase sequence protector; second,
make sure that the phase sequence of the power is consistent with that of the phase sequence
protector. Usually, the first is adjusted before the conditioner leaves factory, but the latter must be
adjusted on site when installing. If the indicator lights and there is abnormal noise when the compressor
is in operation, please make sure that the phase sequence of the compressor is consistent with that of
the phase sequence protector.
Some products of our company have pressure protection equipment. If your unit has such equipment,
please read the following content:
High-pressure protection switch: to assure that the system will not be damaged by the overhigh pressure.
Low-pressure protection switch: to protect the compressor when the system is badly short of refrigerate.
If the above product is damaged, please use the accessory designated by our company.
INSTALLATION MANUAL 4.5Electrical Layout & Wiring Method
L1 L2 L3 N
Red Black
Brown
Blue
Yellow
Green
Power lines on outdoor unit
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