NOTES :
1. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
2. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
3. Symbols used in wiring diagram above are,
: Connector.
/
: Terminal block.
4. Emergency operation
If remote controller or microcomputer fails but there is no other trouble, emergency operation is possible by setting dip switch (SW3<I. B>) on the indoor con-
troller board.
[Check items]
(1) Make sure that no other trouble exist the outdoor unit. Trouble with the outdoor unit prevents emergency operation. (If any trouble exists the outdoor unit error
code "P8" will be displayed on the remote controller and the trouble position will be shown on the outdoor controller board LED. See electric wiring diagram of
the outdoor unit for details.)
(2) Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous operation mode due to power ON/OFF (ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1) Set the dip switch (SW3<I. B>) on the indoor controller board to
1
on and
2
off for cooling.
(2) Turn on outdoor unit side circuit breaker, then indoor unit side circuit breaker, in this order.
(3) During emergency operation, indoor fan runs at high speed but automatic vane remains stop. If vane is closed, open the vane by hands.
(4) Thermostat will not function.
(5) Emergency cooling should be limited to 10 hours maximum.
(6) After every operation, set all dip switches (SW3<I. B>) to OFF.
OC196A-25
TB6
1 2
OFF
ON
R.B
2
1
4
3
6
5
CN1
1 2 3
CN2
LCD
0 9 8 7 6 5 4 3 2 1
SW17
18FK
GR
J9
8
7
LED1 12V
POWER
X4
C
MF
L1
N
GRN/YLW
SW7
CN51
CENTRALL
Y
CONTROL
LED2 5V
POWER
ON
OFF
TRANSMISSION WIRES
DC12V
1
2
HEA
TER
CN24
REMOCON
POWER
CN40
42
1
3
J5
4
SW2
ON
OFF
1 2 3 4 5 6
SW6
1 2 3 4
9
6
5
4
J1
1 2 3 4
SW7
SW3
ON
OFF
1 2
TO
REMOCON
CN22
1
2
OFF
ON
1 2 3 4
1 2 3 4
24FK
MODELS
RT2
2
CN27
D.U.M
I.B
TO OUTDOOR UNIT
CONNECTING WIRES
DC12V
1
T
ZNR
F2
F1
MV
1
2
3
4
5
1
6
1
1
4
3
2
3
5
3
2
1
1
1
3
3
FAN1
POWER
OUTDOOR
TRANS
VANE
LOSSNA
Y
TRANS
CND
CN30
CN6V
CN4T
CN2L
CNT
DRAIN
CN50
INTAKE
CN20
PIPE
CN21
11
22
RT1
ON
OFF
1 2 3 4
30FK
ON
OFF
1 2 3 4
36FK
TB2
GROUND
POWER SUPPLY
~ (1 PHASE)
AC115V 60Hz
WHT
BLK
RED
TB5
BLU
BLU
TB4
6
ORN
YLW
BRN
BRN
RED
RED
14.3VAC
10VAC
115V
BLU
RED
WHT
RED
X4
MODEL PK18/24/30/36FK WIRING DIAGRAM
SYMBOL
C
NAME
FAN MOTOR CAPACITOR
CN1<R. B>
PROGRAM TIMER CONNECTOR
CN2<R. B>
REMOTE SWITCH CONNECTOR
CN2L<I. B>
LOSSNAY CONNECTOR
CN27<I. B>
DRAIN LIFT-UP MECHANISM CONNECTOR
CN51<I. B>
CENTRALLY CONTROL CONNECTOR
F1. 2<I. B>
FUSE (6A 250V)
I. B
INDOOR CONTROLLER BOARD
J1
MODE SELECTOR JUMPER RESISTORS
J5
MODEL SELECTOR JUMPER RESISTORS
J9
MODEL SELECTOR JUMPER RESISTORS
LCD<R. B>
LIQUID CRYSTAL DISPLAY
LED1<I. B>
LED (DC 12V POWER)
LED2<I. B>
LED (DC 5V POWER)
MF
FAN MOTOR
MV
R. B
VANE MOTOR
REMOTE CONTROLLER BOARD
SYMBOL
RT1
NAME
ROOM TEMP. THERMISTOR
(32˚F/15K
Ω
, 77˚F/5.4K
Ω
DETECT)
RT2
PIPE TEMP. THERMISTOR
(32˚F/15K
Ω
, 77˚F/5.4K
Ω
DETECT)
SW2<I. B>
ADDRESS SELECTOR
SW3<I. B>
EMERGENCY OPERATION
SW6<I. B>
MODEL SELECTOR
SW7<I. B>
MODEL SELECTOR
SW17<I. B>
ADDRESS SELECTOR
T
TRANSFORMER
TB2
POWER TERMINAL BLOCK
TB4
INDOOR / OUTDOOR CONNECTING LINE TERMINAL BLOCK
TB5, 6
REMOTE CONTROLLER TRANSMISSION LINE TERMINAL BLOCK
X4<I. B>
FAN MOTOR RELAY
ZNR
VARISTOR
OC196A--1.qxp 1.12.19 10:35 AM Page 25
