Wiring Diagram - Mitsubishi Electric PK-2.5FLD Technical & Service Manual

7

WIRING DIAGRAM

PK-2.5FLD PK-3FLD PK-4FLD
PK-2.5FLD PK-3FLD
1
PK-2.5FLD PK-3FLD
2
MF
C
I.B
FAN1
1 3 5
X4
X4
SW3
ON
OFF
1 2 3
CN2B CN2A
TWIN-2 TWIN-1
1 2 3
SYMBOL NAME
C FAN MOTOR CAPACITOR
CN2<I.B> TIMER ADAPTOR CONNECTOR
CN2A<I.B> TRANSMISSION WIRES No.1 CONNECTOR
CN2B<I.B> TRANSMISSION WIRES No.2 CONNECTOR
CN27<I.B> DRAIN LIFE-UP MECHANISM
CN28<I.B> TIME SHORTENING CONNECTOR
CN51<I.B> MULTIPLE CONNECTOR
F1,2<I.B> FUSE(6.3A 250V)
I.B INDOOR CONTROLLER BOARD
JR JUMPER RESISTORS (FUNCTION SELECTOR)
NOTES:
1. Since the indoor fan motor (MF) is connected with 220V power, using 230, 240V power will require a setting change of the dip switch (SW1<I.B>) on the
indoor controller board as shown in fig:
w
fig 1 Indoor fan motor (MF) for 230,240V.
2. Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
3. Since the indoor transformer (T) is connected with 220V power, if 230,240V power is used. Change the wiring connection showing fig * : 2.
w
fig 2 When power supply is
4. Symbols used in wiring diagram above are,
5. 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) Compressor and fan.
(2) Check the trouble position using self diagnostic function. If the result of self diagnosis indicates protective device such as freeze protection is functioning
emergency operation is not possible unless the cause is removed.
Emergency operation will be continuous operation mode due to power ON/OFF (ON/OFF with remote controller is not possible).
[Emergency operation procedure]
(1) Set the dip switch (SW3 <I.B>) on the indoor controller board to
(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.
(The indoor unit heat exchanger may freeze).
PK-4FLD
1 1
PK-4FLD
2 2
CND CNT
1 3 1 3
POWER TRANS
F2 F1
ZNR
7
CN70
SW1 SW2
JR
WIRELESS
ON
OFF
1 2 3 4 5 6 7 8 1 2 3 4 5
4 5 6
MODELS
SW1
SYMBOL
MF FAN MOTOR
MV VANE MOTOR
ROOM TEMPERATURE THERMISTOR
RT1
(0%/15k",25°C/5.4k" DETECT)
PIPE TEMPERATURE THERMISTOR
RT2
(0%/15k". 25%/5.4k" DETECT)
Ru<W.B> RECEIVING SELECTOR UNIT
FUNCTION SELECTOR SWITCH
SW1<I.B>
UNIT SELECTOR SWITCH
SW2<I.B>
EMERGENCY OPERATION SWITCH
SW3<I.B>
TRANSFORMER
T
w
1.
SW1
ON
OFF
2 3 4 5 6 7 8
1
220V
RED
230V ORANGE
230V
240V YELLOW
220V
: Connector,
GRN/YLW
10.6VAC
220V
230V
240V
14.5VAC
T
CN4T
4 3 2 1
TRANS
6
1
CN6V
VANE
1 2 3 4 5
CN50
CN21
1
DRAIN
PIPE
CN20
INTAKE
PK-2.5FLD
PK-4FLSD
PK-3FLD
ON ON
OFF OFF
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
NAME
ON
OFF
2 3 4 5 6 7 8
1
: Terminal block.
1 • 2 on and 3 off for cooling.
15
L
POWER SUPPLY
~(1 PHASE)
N
AC220-240V 50Hz
AC220V 60Hz
TB2
7
CNB
Ru
LD1
SW1
6
MV
REMOTE
CONTROLLER
TB4
2
ORN TO OUTDOOR UNIT
CONNECTING WIRES
1
YLW
DC12V
RT2
RT1
SYMBOL
TB2 TERMINAL BLOCK (POWER SUPPLY)
TERMINAL BLOCK
TB4
(INDOOR/OUTDOOR CONNECTING WIRE)
FAN MOTOR RELAY
X4<I.B>
VARISTOR
ZNR
ON/OFF SWITCH
SW1<W.B>
LD1<W.B> LED (RUN INDICATOR)
WIRELESS REMOTE CONTROLLER BOARD
W.B
WIRELESS REMOTE CONTROLLER
W.R
SW1
W.B
W.R
NAME