Wiring Diagram - Mitsubishi PK18FL3 User Manual

8

WIRING DIAGRAM

Indoor Unit
PK18/24/30/36FL3
MF
C
I.B
FAN
1 3 5
(WHT)
X4
FC
X4
SW3
12
SW2 SW5 SW8
ON
ON
OFF
OFF
1 2 3 4 5 6
1 2 3 4 5 6 1 2 3 4
MODELS 18FL3 24FL3
ON ON
SW7
OFF OFF
123 123
[LEGEND]
SYMBOL
P.B
I.B
CN2L
CN51 CONNECTOR(CENTRALLY CONTROL)
FC
SW1
SW2
SW3
SW5
SW6
SW7
SW8
SW9
X4
F1,F2
ZNR
LED1
LED2
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,
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.
(2)Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous run with the 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.
(3)During emergency operation indoor fan runs at high speed but auto-vane does not work.
(4)Thermostat will not function.
(5)Emergency cooling should be limited to 10 hours maximum (the indoor unit heat exchanger may freeze).
(6)After every emergency operation,set all dip switches(SW3<I.B>) to OFF.
(7)Movement of the vanes does not work in emergency operation,therefore you have to slowly set them manually to the
appropriate position.
MV
6
1 3
CENTRALLY
SW9
CONTROL
ON ON
OFF OFF
1 23 4 5
DRAIN
SW1 SW6 SW7
CN31
ON
(WHT)
OFF
1 2 3
1 2 3 4 5 6 7 8 9 10 1 234 1 23
30FL3 36FL3
ON ON
OFF OFF
123 123
NAME
INDOOR POWER BOARD
INDOOR CONTROLLER BOARD
CONNECTOR(LOSSNAY)
FAN PHASE CONTROL
SWITCH(FUNCTION SELECTOR)
SWITCH(ADDRESS SELECTOR)
SWITCH(EMERGENCY OPERATION)
SWITCH(MODEL SELECTOR)
SWITCH(TWIN/TRIPLE SELECTOR)
SWITCH(MODEL SELECTOR)
SWITCH(OPTION)
SWITCH(MODEL SELECTOR)
RELAY(FAN MOTOR)
FUSE(6A/250V)
VARISTOR
LED(DC12V POWER)
LED(DC5V POWER)
(DC13.1V)
(AC115V)
CN2S (WHT)
CNSK(RED)
TRANS
3
2
2
1
1
6
POWER POWER
1 3 1 2
CND
CNDK
VANE
(RED)
(WHT)
CN2D
CN6V
F1
(WHT)
(WHT)
F2
9
LED1 LED2
WIRELESS
CN90
ZNR
(WHT)
4
REMOCON
3
REMOCON
POWER
2
2 CN22
CN51
CN40
(BLU)
1
(WHT)
1
PIPE
INTAKE
OUT
3
CN21
LOSSNAY
CN20
DOOR
ORN
(WHT)
(RED)
CN2L 2
CN30
YLW
(BLU)
1 2 1 2 1
RT2 RT1
SYMBOL
C CAPACITOR(FAN MOTOR)
MF FAN MOTOR
MV VANE MOTOR
TB2~TB6 TERMINAL BLOCK
RT1 ROOM TEMP.THERMISTOR
(32°F/15k',77¯°F/5.4k'DETECT)
RT2 PIPE TEMP.THERMISTOR/LIQUID
(32°F/15k'77°F/5.4k'DETECT)
W.R
WIRELESS REMOTE CONTROLLER
W.B REMOTE CONTROLLER BOARD
RU RECEIVING UNIT
BZ BUZZER
LED1 LED(RUN INDICATOR)
SW2 SWITCH(COOLING ON/OFF)
:Connector, :Terminal block.
OC275-16
TB2
POWER SUPPLY
RED L1
~(1PHASE)
BLU N
AC115V 60Hz
GRN/YLW
GR
P.B
GROUND
BZ
LED2 LED1
CNB
SW1 SW2
REMOTE
CONTROLLER
TB4
2 TRANSMISSION WIRES DC12V 2
1 1
TB3
OUTDOOR UNIT
NAME
W.B
RU
W.R