OC196A-27
MODELS PK18/24/30/36FK
1
, PK18/24/30/36FK
2
WIRING DIAGRAM
CN2
OFF
ON
TB6
1 2
OFF
ON
R.B
4
5
2
3
1
CN1
3 2 1
87654321
SW17
SW18
87654321
1234
OFF
ON
1234
OFF
ON
MODELS
1234
1234
ON
OFF
OFF
ON
SW7
PK18FK
1
, FK
2
PK24FK
1
, FK
2
PK30FK
1
, FK
2
PK36FK
1
, FK
2
GR
J9
8
7
LED1 12V
POWER
X4
C
MF
L1
N
CN51
CENTRALL
Y
CONTROL
LED2 5V
POWER
TRANSMISSION WIRES
DC12V
1
2
HEA
TER
CN24
REMOCON
POWER
CN40
42
1
3
J5
4
SW2
ON
OFF
123456
SW6
1234
9
6
5
4
J1
1234
SW7
SW3
ON
OFF
12
TO
REMOCON
CN22
1
2
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
1
1
2
2
RT1
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
SYMBOL
C
CN1<R.B>
CN2<R.B>
CN2L<I.B>
CN27<I.B>
CN51<I.B>
F1,2<I.B>
I.B
J1
J5
J9
LED1<I.B>
LED2<I.B>
MF
MV
R.B
NAME
FAN MOTOR CAPACITOR
CONNECTOR (PROGRAM TIMER)
CONNECTOR (REMOTE SWITCH)
CONNECTOR (LOSSNAY)
CONNECTOR (DRAIN LIFT-UP MECHANISM)
CONNECTOR (CENTRALLY CONTROL)
FUSE (6A 250V)
INDOOR CONTROLLER BOARD
JUMPER RESISTORS (MODE SELECTOR)
JUMPER RESISTORS (MODEL SELECTOR)
JUMPER RESISTORS (MODEL SELECTOR)
LED (DC 12V POWER)
LED (DC 5V POWER)
FAN MOTOR
VANE MOTOR
REMOTE CONTROLLER BOARD
SYMBOL
RT1
RT2
SW2<I.B>
SW3<I.B>
SW6<I.B>
SW7<I.B>
SW17<R.B>
SW18<R.B>
T
TB2
TB4
TB5,6
X4<I.B>
ZNR
NAME
ROOM TEMP.THERMISTOR
(32˚F/15k
"
, 77˚F/5.4k
"
DETECT)
PIPE TEMP.THERMISTOR
(32˚F/15k
"
, 77˚F/5.4k
"
DETECT)
SWITCH (ADDRESS SELECTOR)
SWITCH (EMERGENCY OPERATION)
SWITCH (MODEL SELECTOR)
SWITCH (MODEL SELECTOR)
SWITCH (ADDRESS SELECTOR)
SWITCH (FUNCTION SELECTOR)
TRANSFORMER
TERMINAL BLOCK (POWER)
TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING LINE)
TERMINAL BLOCK (REMOTE CONTROLLER TRANSMISSION LINE)
RELAY(FAN MOTOR)
VARISTOR
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 controller 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--1.qxp 1.12.19 10:35 AM Page 27
