15.3 WIRING CONNECTION
! DANGER
• Tightly clamp wires by the cord clamp after the wiring is
completed to the terminal board. If not completed, it may cause
a re by biting wires.
• Ensure that L1 and N cables part, between the cord anchorage
and terminal board connection, become taut before the earthing
conductor if the cords slips out of the cord anchorage. When
connecting power supply cables, the wire shall be covered by a
xed wired duct (eld supplied).
1 The wiring connection for the indoor unit is shown below.
Cap
Upper side
Wire connection
Rear side
Wire connection
Cap
2 The wiring connection for electrical box is as follows.
a. Open the air inlet grille.
b. Remove the electrical box cover.
c. Connect the control cable, power source cable and
remote control switch cable.
Electrical box
AB12
PCB1
Terminal board (white)
Terminal board (black)
Earth terminal
Power source line
Controller cable
Terminal board
(white)
Remote control
switch cable
Control
cable
Transition wiring between indoor
units
(Case that multiple indoor units are operated
by one remote control switch.)
This is not required for the simultaneous
operation of UTOPIA series at a maximum of
4 indoor units.
d. After the wiring is completed, attach the electrical box
cover again with care in order not to bite wires.
Wire for fan motor
15.4 DIP SWITCH SETTING
1 Turn OFF all the power supply to the indoor and the outdoor
units before dip switch setting. If not, the setting is invalid.
2 The positions of dip switches on PCB are shown in the gure
below.
Indoor unit PCB
DSW4
(Unit model code setting)
RSW1 & DSW5
(Refrigerant cycle number setting)
DSW7
(Fuse recover)
DSW3
(Capacity setting)
RSW2 & DSW6
(Indoor unit number setting)
DSW9
(Optional function setting)
ELECTRICAL WIRING
PMML0551 rev.4 - 07/2023 - A10762310A
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