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WARNING
Do not squeeze or pull the unit connection,
and make sure the wiring is not in contact
with the sharp edges of the sheet metal.
Make sure the grounding connection is safe
and reliable. Do not connect the earth wire to
public pipes, telephone earth wires, surge
absorbers and other places that are not
designed for grounding. Improper grounding
may cause electric shock.
Make sure the fuses and circuit breakers
installed
meet
the
specifications.
Make sure an electric leakage protection
device is installed to prevent electric shocks
or fires.
The model specifications and characteristics
(anti high-frequency noise characteristics) of
the electric leakage protection device are
compatible with the unit to prevent frequent
tripping.
Before power on, make sure the connections
between the power cord and terminals of the
components are secure, and the metallic
cover of the electric control box is closed
tightly.
NOTE
If the power supply lacks N phase or there is
an error in the N phase, the device will
malfunction.
Some power equipment may have an inverted
phase or intermittent phase (such as a
generator). For this type of power sources, a
reverse-phase protection circuit should be
installed locally in the unit, as operating in the
inverted phase may damage the unit.
Do not share the same power supply line with
other devices.
The power cord may produce electromagnetic
interference so you should maintain a certain
distance from equipment
susceptible to such interference.
Separate power supply for the indoor and
outdoor units.
For systems with multiple units, make sure a
different address is set for each outdoor unit.
5.10.2 Wiring layout
Wiring layout comprises of the power cords and
communication wiring between the indoor and outdoor
units. These include the earth lines, and the shielded
layer of the earth lines of the indoor units in the
communication line. See below the wiring layout of
outdoor unit.
corresponding
that may be
35
WARNING
If you want to remove the electric control box
as a whole, you need to release the
refrigerant in the system first, weld and
disconnect the connecting pipe of the
refrigerant radiator at the right rear of the
electric control box, and remove all cables
connected between the electric control box
and the air conditioner at the same time.
The picture shown in this view may be
inconsistent with the actual product due to
product model and product upgrade. Please
take the actual product as the standard!
Upper electric control box-front
3
2
1
1
Upper electric control box-back
4
Lower electric control box-front
5
6
Reactor
Power line terminal
1
5
Communication
Inverter module board 1
2
6
wiring terminal
Main PCB
Inverter module board 2
3
7
Filter board
Humidity sensor
4
8
Fig 5.44
Fig 5.45
8
7
Fig 5.46
V.1
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