Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual page 28

PKH-2.5FKA-E / PKH-3FKA-E / PKH-4FKSA-E
MF
C
I.B
FAN1
1 3 5
X4
X4
J5
SW2
ON
OFF
2 4
1 2 3 4 5 6
SYMBOL
C 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 (6.3A 250V)
I.B INDOOR CONTROLLER BOARD
J1 MODE SELECTOR JUMPER RESISTORS
J5 MODE SELECTOR JUMPER RESISTORS
J9 MODE SELECTOR JUMPER RESISTORS
LED1 <I.B> DC 12V POWER LED
LED2 <I.B> DC 5V POWER LED
MF FAN MOTOR
MV VANE MOTOR
R.B REMOTE CONTROLLER BOARD
NOTES:
1. Since the indoor fan motor (MF) is connected with 230, 240V power, using 220V power will require a setting change of the dip switch (SW7<I.B>) on the indoor
controller board as shown in fig :
fig w 1
Indoor fan motor (MF) for 220V.
SW 7
2. Since the indoor transformer (T) is connected with 240V power, if 220,230V power is used. Change the wiring connection showing fig :
fig w 2
When power supply is
3. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
4. Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
5. Symbols used in wiring diagram above are,
6. Emergency operation
If remote controller of 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 and 1 - 2 on for heating.
(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 automatic vane remains stop.
(4)Thermostat will not function. Cold air blows out for defrosting during heating thus do not operate defrosting for along time.
(5)Emergency cooling should be limited to 10 hours maximum.
(The indoor unit heat exchanger may freeze).
(6)After every operation, switch the fan connector to FAN1, and set all dip switches (SW3<I.B>) to OFF.
240V
230V
220V
CND CNT
1 3 1 3
POWER TRANS
F2 F1
LED2 5V
POWER
ZNR
LED1 12V
SW7 SW3
POWER
ON
OFF
1 2 3 4 1 2
J9 J1
SW6
2 4 5 6 7 8 9 10
1 2 3 4
NAME
1.
w
ON
SW7
OFF
1 2 3 4
240V YELLOW
230V
ORANGE
230V
220V
RED
220V
: Connector, / : Terminal block.
GRN/YLW
10VAC
14.3VAC
6
T
MV
CN4T
6 1
4 3 2 1
TRANS
CN6V
VANE
CN21
PIPE
CN20
INTAKE
SYMBOL
RT1 ROOM TEMPERATURE THERMISTOR
(0:/15".25:/5.4"DETECT)
RT2 INDOOR COIL THERMISTOR
(0:/15".25:/5.4"DETECT)
SW2 <I.B> ADDRESS SELECTOR
SW3 <I.B> EMERGENCY OPERATION SWITCH
SW6 <I.B> MODEL SELECTOR
SW7 <I.B> MODEL SELECTOR
SW17 <R.B> ADDRESS SELECTOR
SW18 <R.B> FUNCTION SELECTOR
T TRANSFORMER
TB2 TERMINAL BLOCK (POWER SUPPLY)
TB4 TERMINAL BLOCK (INDOOR/OUTDOOR CONNECTING WIRE)
TB5 TERMINAL BLOCK (REMOTE CONTROLLER)
TB6 LINE TRANSMISSION TERMINAL BLOCK
4 <I.B> FAN MOTOR RELAY
ZNR VARISTOR
ON
OFF
1 2 3 4
28
L
POWER SUPPLY
N ~(1 PHASE)
AC220-240V 50Hz
AC220V 60Hz
TB2
MODELS 2.5,3FKA 4FKSA
ON ON
SW7
OFF
OFF
1 2 3 4 1 2 3 4
TRANSMISSION WIRES
TB5
DC12V
2
BLU
1
BLU
TB4
3
BRN
TO OUTDOOR UNIT
2
ORN
CONNECTING WIRES
1
YLW
DC12V
R.B
RT2
SW18
TB6
OFF
ON
RT1
4 3 2 1
SW17
5 4
OFF
ON
8 7 6 5 4 3 2 1
3 2 1
NAME
2.
w
A01 B02
CN1
3 2 1
CN2