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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 earthing 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 earthing. Improper earthing may
cause electric shock.
Make sure the fuses and circuit breakers
installed
meet
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.
CAUTION
If the power supply lacks N phase or there is
an error in the N phase, the device will
malfunction.
Some
power
equipment
reverse-phase 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 Layout
Wiring layout comprises of the power cords and
communication wiring between the indoor and outdoor
units. These include the earth wires, and the shielded
layer of the earth wires of the indoor units in the
communication wiring. See below the wiring layout of
outdoor unit.
the
corresponding
may
have
that may be
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.
Upper electric control box-front
3
2
1
Upper electric control box-back
4
Lower electric control box-front
5
6
1
Power supply cable
5
terminal
Communication
Inverter module board 1
2
6
wiring terminal
Main PCB
3
7
Filter board
4
8
1
Fig 5.39
Fig 5.40
8
7
Fig 5.41
Reactor
Inverter module board 2
Humidity sensor
V.1
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