Service manual

Notes: For the air conditioner with auxiliary electric heater, the power cable shall also be connected to
“L1” , “L2”, “L3”, “N” terminals and earth screw in the electric box of indoor unit.
11.3.11 Connection of Wired controller Signal Wire
1) Open the electric box of indoor unit.
2) Insert the wired controller signal wire through the rubber ring.
3) Insert the wired controller signal wire into the 4-bit seat.
4) Fix the signal wire of wired controller tightly with tie strap.
Notes:
a) To prevent the air conditioner from malfunction due to electromagnetic interference, be sure to
take special care when performing the cable connection below.
b) The signal wire of wired controller shall be separated from power cable and indoor/outdoor
connection cable.
c) If the air conditioner is installed at a place subject to electromagnetic interference, it is best to
use the shield wire and twisted pair as the signal wire of wired controller.
11.4 Installation of Outdoor Unit
11.4.1 Select the install location of outdoor unit
a) Ensure that the noise and air flow generated by exhaust will not affect your neighbor.
b) Ensure good ventilation for outdoor unit.
c) Near the air outlet of outdoor unit, there shall be no obstacles that may affect the air flow into or
out of the unit.
d) The installing position shall be able to support the weight and vibration of outdoor unit, and can
ensure safe completion of installation works.
e) A place without possible leakage of flammable or corrosive gas.
f) Prevent any strong wind from blowing directly to the air outlet of outdoor unit. If any strong wind
is blown directly to the air outlet, the fan will be incurred to insufficient air flow.
g) Avoid installing at a place where organic oil, sulfur gas or high noise exists.
11.4.2 Install the outdoor unit
1) If the outdoor unit is installed on a firm and stable ground as concrete, please fix with M10 bolt and
nut to ensure the unit is upright and level.
2) Do not install at the top of a building.
3) If the vibration causes noise, please add rubber gasket between the outdoor unit and installation
base.
4) To run under HEAT or DEFROST mode, the water shall be drained from the outdoor unit.
5) To install the drainage pipe, insert the drainage connector into the drainage hole on the base of
outdoor unit. Then, connect a drainage to the drainage connector. (To use drainage connector, the
installing height of outdoor unit shall be 5cm at least).
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