Page 1
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
SPLIT -TYPE, AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
2000
No. OC232
REVISED EDITION-A
Series PK
Indoor unit
[ Model names ] [ Service Ref. ]
Wall Mounted
2000, 2001 2000 2001
PK-2.5FLD
PK-2.5FLD PK-2.5FLD
PK-2.5FLD
PK-3FLD
PK-3FLD PK-3FLD
PK-3FLD
PK-4FLSD
PK-4FLD PK-4FLSD
PK-4FLSD
1
2
1
2
1
2
CONTENTS
PK-P2.5FLD1, PK-P3FLD1,
PK-P4FLSD
PK-P3FLD
are added in REVISED
EDITION-A.
Please void OC232.
This manual does not cover
the following outdoor units.
When servicing them,
please refer to the service
manual No.OC127
REVISED EDITION-A,
OC187 and this manual in
a set.
[ Service Ref. ]
(OC127 REVISED
EDITION-A)
PU-2.5VJA
PU-3NJA
PU-4YJSA
(OC187)
PU-3VJC, PU-3YJC
1
, PK-P2.5FLD2,
2
and PK-4FLSD
2
, PU-2.5NJA1,
1
, PU-4VLJSA2,
3
, PU-4TJSA
2
2
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
Indoor unit
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
REMOTE CONTROLLER
1. TECHNICAL CHANGES·······················2
2. COMBINATION OF INDOOR
AND OUTDOOR UNITS········2
3. PART NAMES AND FUNCTIONS ········2
4. SPECIFICATIONS·································5
5. DATA·····················································9
6. OUTLINES AND DIMENSIONS··········12
7. WIRING DIAGRAM ·····························15
8.
REFRIGERANT SYSTEM DIAGRAM
······16
9. OPERATION FLOW-CHART ··············17
10. MICROPROCESSOR CONTROL·······20
11. TROUBLESHOOTING························29
12. DISASSEMBLY PROCEDURE ···········33
13. PARTS LIST ········································36
14. OPTIONAL PARTS·····························42
Page 2
1
Air intake
Room air is suctioned
in here.
(Removes dust and dirt from the intake air.)
Disperses airflow up and
down as well as adjusts the
angle of air flow direction.
Filter Air intake grille
Air outletAir outlet
Swing louvers
Air flow can be changed to horizontally
by moving the Guide vane to the left or
right.
Guide vane
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
Outdoor unit
(OC187)
Outdoor unit
(OC127 REVISED EDITION-A)
VJA2 NJA1 NJA1
VLJSA2YJSA3 TJSA2 VJC YJC
PU-2.5 PU-3 PU-4 PU-3
PK-2.5FLD
PK-2.5FLD1
PK-2.5FLD
2
PK-3FLD
PK-3FLD1
PK-3FLD2
PK-4FLSD
PK-4FLSD1
PK-4FLSD
2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Indoor unit
TECHNICAL CHANGES
PK-2.5FLD ➔ PK-2.5FLD1
PK-3FLD ➔ PK-3FLD1
PK-4FLSD ➔ PK-4FLSD1
● NOSE has changed by changing its shape.
● BOX ASSEMBLY has changed by changing its shape.
● CENTER SUPPORT has changed by changing its shape.
● DRAIN PAN has changed by changing its shape.
2
COMBINATION OF INDOOR AND OUTDOOR UNITS
PK-2.5FLD1 ➔ PK-2.5FLD2
PK-3FLD1 ➔ PK-3FLD2
PK-4FLSD1 ➔ PK-4FLSD2
● The parts No. of REMOTE CONTROLLER has changed.
(The following parts numbers are interchangeable.)
[ T7W 570 200 ] [ T7W E06 714 ]
3
● Indoor Unit
PART NAMES AND FUNCTIONS
2
Page 3
PK-2.5FLD, PK-3FLD, PK-4FLSD
PK-2.5FLD1, PK-3FLD1, PK-4FLSD1
● Wireless remote controller
● When cover is closed.
Part No.
[ T7W 570 200 ]
display
OPERATION MODE display
Operation mode display indicates which operation mode is in effect.
• • display
CHECK&TEST RUN display indicates that the
unit is being checked or test-run.
TEST RUNCHECK
display
Displays when batteries are dead.
display
Displays when setting timer.
display
Lights when signal is sent from the remote
controller to the indoor unit.
display
The vertical direction of airflow is indicated in
▼
marks.
NOT AVAILABLE
ON / OFF
AM
PM
AM
PM
TEMP
display
SET TEMP. display indicates desired temperature set.
CLOCK display
˚C
DIsplays the current time.
“ ”display
Flashes when the current time is displayed.
TIMER display
Displays when in timer operation or when setting timer.
➡
“ ” “ ” display
➡
Displays the order of timer operation.
“ ” “ ” display
Displays whether timer is on or off.
display
FAN SPEED display indicates which fan speed
has been selected.
button
SET TEMPERATURE button sets any desired
room temperature.
● When cover is open.
MODE SELECT button
MODE SELECT button is used to change
cooling, dry (dehumidify) and ventilation operation modes.
FAN SPEED SELECT button
FAN SPEED SELECT button selects low or
high fan speed.
ON / OFF
MODE
FAN
VANE STOP
HR MIN.
CLOCK
START
▼
“ ” “ ” display
Displays when the current time and the timer
time can be changed.
▼
button
Push to start operation. Push again to stop
operation.
SET CLOCK button
Button used to set the current time.
TIMER CONTROL buttons
STOP (OFF timer): when this switch is set,
the air conditioner will be automatically
stopped at the preset time.
START(ON timer): when this switch is set, the
air conditioner will be automatically started at
the preset time.
VANE CONTROL button
VANE CONTROLbutton regulates the vertical
distribution of airflow.
HR. and MIN.buttons
Buttons used to set the “hour and minute” of
the current time and timer time.
3
Page 4
PK-2.5FLD2, PK-3FLD2, PK-4FLSD2
ON/OFF TEMP
FAN
VANE
TEST RUN
AUTO STOP
AUTO START
h
min
LOUVER
MODE
CHECK
RESETSET CLOCK
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
VANE CONTROL button
Used to change the air flow direction.
CLOCK button
RESET button
SET button
ON/OFF button
The unit is turned ON and OFF alternately
each time the button is pressed.
LOUVER button
This switch the horizontal fan motion ON
and OFF.
(Not available for this model.)
MODE SELECT button
Used to switch the operation mode between
cooling, drying, fan.
CHECK-TEST RUN button
Only press this button to perform an inspection check or test operation.
Do not use it for normal operation.
FAN SPEED SELECT button
Used to change the fan speed.
TIMER display
Displays when in timer operation or when
setting timer.
button
SET TEMPERATURE button sets any desired
room temperature.
CLOCK display
Displays the current time.
“ ” “ ” display
Displays the order of timer operation.
“ ” “ ” display
Displays whether timer is on or off.
Buttons used to set the “hour and minute” of
the current time and timer settings.
h and min buttons
display
SET TEMP. display indicates desired temperature set.
display
FAN SPEED display indicates which fan
speed has been selected.
display
The vertical direction of air flow is indicated.
display
Blinks when model is selected.
display
Lights up while transmission to the indoor
unit is mode using switches.
display
CHECK&TEST RUN display indicates that
the unit is being checked or test-run.
display
OPERATION MODE display
Operation mode display indicates which operation mode is in effect.
TIMER CONTROL buttons
AUTO STOP (OFF timer): when this switch
is set, the air conditioner will be automatically stopped at the preset time.
AUTO START (ON timer): when this switch
is set, the air conditioner will be automatically started at the preset time.
MODEL SELECT
CHECK
TEST RUN
●Wireless remote controller
● When cover is open.
Part No.
[ T7W E06 714 ]
4
Page 5
4
w4
w5
22,700
6,650
3.54
3.44
15.8(99)
58
27/19.0°C, 35/24°C
Cooling (JIS B8616)
PK-2.5FLD PK-2.5FLD
1 PK-2.5FLD2
PK-2.5FLD PK-2.5FLD1 PK-2.5FLD2
Munsell 3.4Y 7.7/0.8(White)
Plate fin coil
Line flow (direct) o 2
0.04
15 - 20(530-706)
0 (direct blow)
—
Wireless remote controller & Built-in
39 - 45
20 (13/16)
1,400 (55-1/8)
235 (9-1/4)
340 (13-3/8)
24 (53)
23,900
7,000
2.56 / 2.62
PU-2.5VJA
2
Single, 50Hz, 220/240V
2.46 / 2.52
11.4 / 10.7 (98/98)
45 / 49
24,400
7,150
3.01
PU-2.5NJA
1
Single, 60Hz, 220V
2.91
13.4 (99)
58
Munsell 5Y 7/1
Capillary tube
Hermetic
Line start
Inner thermostat, HP/LP switch
Plate fin coil
Propeller (direct) o 1
0.085
50 (1765)
—
870 (34-1/4)
295 (+24) (11-5/8 (add 1))
850 (33-7/16)
71 (157)
9.52 (3/8)
15.88 (5/8)
Flared
Flared
w3 Max. 20m
w3 Max. 30m
NHJ41VMD
2.0
32 / 38
NHJ38NBD
1.7
—
52 53
R-22 2.4 (5.3) R-22 2.4 (5.3)
Single, 60Hz, 220V
0.095
0.44 (98)
0.7
Single, 50Hz, 220/240V
0.095 / 0.095
0.44 / 0.44 (98/90)
0.7 / 0.8
Item
Service Ref.
Condition
Capacity w1
Total input w1
Service Ref.
Power supply(phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Heat exchanger
Fan(drive) o No.
Fan motor output
Airflow (Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-High) w2
Unit drain pipe. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level w2
Dimensions
Weight
Refrigerant Charge
Pipe size O.D.
Connection method
Between the indoor &
outdoor units
Btu/h
W
kW
kW
A(%)
A
kW
m
3
/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kW
A(%)
A
kW
W
kW
m
3
/min(CFM)
dB(A)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
mm(in.)
mm(in.)
Indoor, Outdoor D.B./W.B.°C
Liquid
Gas
W
D
H
W
D
H
REFRIGERANT PIPING
OUTDOOR UNIT
Indoor side
Outdoor side
Height difference
Piping length
INDOOR UNIT
Fan
Fan
SPECIFICATIONS
1. STANDARD SPECIFICATION
w1 Refrigerant piping length (one way) : 5m (16ft)
w2 Noise level is measured in an unacoustic room based on JIS conditions.
w3 Up to 20m it is unnecessary to charge additional refrigerant.
w4 Indoor, Outdoor D.B./W.B. : 29/19°C, 46/24°C.
w5 Cooling SSA385, 386
5
Page 6
Item
Service Ref.
PK-3FLD PK-3FLD
1 PK-3FLD2
PK-3FLD PK-3FLD1 PK-3FLD2
27/19.0°C, 35/24°C
Cooling (JIS B8616)
Munsell 3.4Y 7.7/0.8(White)
Plate fin coil
Line flow (direct) o 2
0.04
15 - 20 (530-706)
0 (direct blow)
—
Wireless remote controller & Built-in
39 - 45
20 (13/16)
1,400 (55-1/8)
235 (9-1/4)
340 (13-3/8)
24 (53)
27,000
7,900
3.28 / 3.30 3.28 / 3.30
28,400
8,200
3.54
Single, 50Hz, 220/240V
0.095 / 0.095
0.44 / 0.44 (98/90)
0.7 / 0.8
Single, 60Hz, 220V
0.095
0.44 (98)
0.7
w4
w5
23,500
6,900
4.19
4.09
20.9(89)
80
PU-3VJC
Single, 50Hz, 220/240V
3.18 / 3.20
15.1/13.9(96/96)
54 / 58
PU-3YJC
3, 50Hz, 380/415V
3.18 / 3.20
5.7/5.3(85/84)
34 / 37
NH52VND
2.2
NH52YDE
2.4
3.44
17.6(89)
80
PU-3NJA
1
Single, 60Hz, 220V
NHJ47NAD
2.2
w6 w7
52 53
w6
R-22 2.8 (6.2)
R-22 3.5 (7.7)
32 / 38 32 / 38 38
Munsell 5Y 7/1
Capillary tube
Hermetic
Line start
Plate fin coil
Propeller (direct) o 1
0.085
50 (1765)
—
870 (34-1/4)
295 (+24) (11-5/8 (add 1))
850 (33-7/16)
73 (161)
9.52 (3/8)
15.88 (5/8)
Flared
Flared
w3 Max. 20m
w3 Max. 30m
Condition
Capacity w1
Total input w1
Service Ref.
Power supply(phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Heat exchanger
Fan(drive) o No.
Fan motor output
Airflow (Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-High) w2
Unit drain pipe. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level w2
Dimensions
Weight
Refrigerant Charge
Pipe size O.D.
Connection method
Between the indoor &
outdoor units
Btu/h
W
kW
kW
A(%)
A
kW
m
3
/min(CFM)
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kW
A(%)
A
kW
W
kW
m
3
/min(CFM)
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
mm(in.)
mm(in.)
Indoor, Outdoor D.B./W.B.°C
Liquid
Gas
W
D
H
W
D
H
REFRIGERANT PIPING
OUTDOOR UNIT
Indoor side
Outdoor side
Height difference
Piping length
INDOOR UNIT
Fan
Fan
w1 Refrigerant piping length (one way) : 5m (16ft)
w2 Noise level is measured in an unacoustic room based on JIS conditions.
w3 Up to 20m it is unnecessary to charge additional refrigerant.
w4 Indoor, Outdoor D.B./W.B. : 29/19°C, 46/24°C
w5 Cooling SSA385, 386
w6 Inner thermostat, HP switch, LP switch.
w7 Thermal switch, Reversed-phase protector, HP switch, LP switch, Thermal relay.
6
Page 7
Item
Indoor, Outdoor D.B./W.B.°C
Condition
Capacity w1
Total input w1
Service Ref.
Power supply(phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Heat exchanger
Fan
Fan(drive) o No.
Fan motor output
Airflow (Low-High)
External static pressure
Booster heater
INDOOR UNIT
Operation control & Thermostat
Noise level (Low-High) w2
Unit drain pipe. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current (Power factor)
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Crankcase heater
Heat exchanger
OUTDOOR UNIT
Fan
Fan(drive) o No.
Fan motor output
Airflow
W
D
H
Service Ref.
Btu/h
W
kW
kW
A(%)
A
kW
3
/min(CFM)
m
Pa(mmAq)
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kW
A(%)
A
kW
W
kW
3
/min(CFM)
m
3.46 / 3.63 3.40 / 3.47
Single, 50Hz, 220/240V
0.53 / 0.53 (98/90)
PU-4VLJSA
Single, 50Hz, 220/240V
3.35 / 3.52
16.9 / 16.3 (90/90)
79 / 79
NH56VND
2.7
w6 w7 w7
32 / 38 32 / 38 38
PK-4FLSD PK-4FLSD
27/19.0°C, 35/24°C
Cooling (JIS B8616)
35,200
10,300
PK-4FLSD PK-4FLSD
0.114 / 0.114
0.8 / 0.9
Munsell 3.4Y 7.7/0.8(White)
Plate fin coil
Line flow (direct) o 2
22 - 28 (777 - 989)
0 (direct blow)
Wireless remote controller & Built-in
20 (13/16)
1,680 (66-1/8)
235 (9-1/4)
340 (13-3/8)
2
PU-4YJSA
3
3, 50Hz, 380/415V
3.29 / 3.36
5.7 / 5.5 (87/85)
38 / 38
Munsell 5Y 7/1
Capillary tube
Hermetic
NHJ56YDE
2.7
Line start
Plate fin coil
Propeller (direct) o 2
0.065 + 0.065
95 (3352)
Defrost method
Noise level w2
Dimensions
Weight
Refrigerant Charge
Pipe size O.D.
Connection method
Between the indoor &
outdoor units
REFRIGERANT PIPING
W
D
H
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kg(lbs)
Liquid
Gas
mm(in.)
mm(in.)
Indoor side
Outdoor side
Height difference
Piping length
dB
54 55 55
870 (34-1/4)
295 (+24) (11-5/8 (add 1))
1258 (49-1/2)
94 (207)
R-22 3.8 (8.4) R-22 4.6 (10.1) R-22 4.6 (10.1)
9.52 (3/8)
19.05 (4/3)
w3 Max. 30m
w3 Max. 40m
w1 Refrigerant piping length (one way) : 5m (16ft)
w2 Noise level is measured in an unacoustic room based on JIS conditions.
w3 Up to 20m it is unnecessary to charge additional refrigerant.
w4 Indoor, Outdoor D.B./W.B. : 29/19°C, 46/24°C
w5 Cooling SSA385, 386
w6 Inner thermostat, HP switch, LP switch, Thermal switch
w7 Thermal switch, Reversed-phase protector, HP switch, LP switch, Thermal relay.
0.07
—
41 - 46
28 (62)
—
Flared
Flared
1 PK-4FLSD2
39,000
11,400
4.38
1 PK-4FLSD2
Single, 60Hz, 220V
3, 60Hz, 220V
0.114
0.53 (98)
0.8
PU-4TJSA
4.27
12.2 (92)
69
NHJ56TKA
2.7
w4
w5
33,800
9,900
5.08
2
4.97
14.0(93)
69
7
Page 8
2. POWER SUPPLY & MODEL NAMES
Power supply Service Ref. (Indoor unit)
1ph.
50Hz
60Hz
220,230,240V
3ph.
380/220,400/230,415/240V
1ph.
220V
3ph.
220V
PK-2.5FLD
PK-2.5FLD
PK-2.5FLD2
PU-2.5VJA2
PU-2.5NJA
Service Ref. (Outdoor unit)
PK-3FLD
PK-3FLD
1
1
PK-3FLD2
PU-3VJC
1
PU-3YJC
PU-3NJA1
—
—
—
PK-4FLSD
PK-4FLSD
PK-4FLSD2
PU-4VLJSA2
PU-4YJSA3
—
PU-4TJSA
1
2
Notes : 1. Power supply key N
……
1ph, 220V, 60Hz Y…3ph, 380/220, 400/230,
V(L) …1ph, 220, 230 240V, 50Hz 415/240V, 50Hz, 4 wires
……
T
3ph, 220V, 60Hz
2. Primary power supplies for all indoor units are single-phase.
3. ELECTRICAL SPECIFICATION
Rating conditions
JIS B8615, 8616
Series PK Indoor Unit (Single Phase)
Power supply (1 Phase) V : 220V 50Hz V : 230V 50Hz
PK-2.5FLD
Service Ref.
Current
Input
Starting current
Outdoor unit
A
kW
A
PK-2.5FLD
PK-2.5FLD2
0.44
0.095
0.7
PU-2.5
Power supply (1 Phase) V : 240V 50Hz N : 220V 60Hz
PK-2.5FLD
Service Ref.
Current
Input
Starting current
Outdoor unit
A
kW
A
PK-2.5FLD
PK-2.5FLD2
0.44
0.095
0.8
PU-2.5
1
1
PK-3FLD
PK-3FLD
PK-3FLD2
0.44
0.095
0.7
PU-3
PK-3FLD
PK-3FLD
PK-3FLD2
0.44
0.095
0.8
PU-3
1
1
Indoor : D.B. 27°C (80°F), W.B. 19°C(66°F)
Outdoor : D.B. 35°C (95°F)
PK-4FLSD
PK-4FLSD
PK-4FLSD2
0.53
0.114
0.8
PU-4
PK-4FLSD
PK-4FLSD
PK-4FLSD2
0.53
0.114
0.9
PU-4
PK-2.5FLD
1
PK-2.5FLD
PK-2.5FLD2
0.44
0.095
PU-2.5
PK-2.5FLD
1
PK-2.5FLD
PK-2.5FLD2
0.44
0.095
PU-2.5
0.8
0.7
1
1
PK-3FLD
PK-3FLD
PK-3FLD2
0.44
0.095
0.8
PU-3
PK-3FLD
PK-3FLD
PK-3FLD2
0.44
0.095
0.7
PU-3
1
1
PK-4FLSD
PK-4FLSD
PK-4FLSD2
0.53
0.114
0.8
PU-4
PK-4FLSD
PK-4FLSD
PK-4FLSD2
0.53
0.114
0.8
PU-4
1
1
8
Page 9
DATA5
Service Ref.
Temperature
PK-2.5FLD
PK-2.5FLD
1
PK-2.5FLD2
T.C. C.F.
(T.I.)
PK-3FLD
PK-3FLD
1
PK-3FLD2
T.C. C.F.
(T.I.)
PK-4FLSD
PK-4FLSD
1
PK-4.5FLSD2
T.C. C.F.
(T.I.)
Outdoor D.B.
21:
(69.8°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
7.0
7.5
7.7
7.8
7.9
8.4
0.81
0.82
0.83
0.83
0.84
0.86
7.9
8.4
8.7
8.8
9.0
9.5
0.81
0.82
0.83
0.83
0.84
0.86
10.4
11.0
11.3
11.5
11.7
12.4
0.81
0.82
0.83
0.83
0.84
0.86
6.9
7.3
7.6
7.7
7.8
8.3
0.84
0.85
0.86
0.86
0.87
0.89
7.7
8.3
8.5
8.7
8.8
9.4
0.84
0.85
0.86
0.86
0.87
0.89
10.1
10.8
11.1
11.3
11.5
12.2
0.84
0.85
0.86
0.86
0.87
0.89
6.6
7.1
7.3
7.4
7.5
8.0
0.90
0.92
0.93
0.93
0.94
0.96
7.5
8.0
8.2
8.4
8.5
9.0
0.90
0.92
0.93
0.93
0.94
0.96
9.7
10.4
10.7
10.9
11.1
11.8
0.90
0.92
0.93
0.93
0.94
0.96
6.5
6.9
7.1
7.2
7.4
7.8
0.93
0.95
0.96
0.97
0.97
0.99
7.3
7.8
8.1
8.2
8.3
8.8
0.93
0.95
0.96
0.97
0.97
0.99
9.6
10.1
10.5
10.7
10.9
11.5
0.93
0.95
0.96
0.97
0.97
0.99
6.3
6.8
7.0
7.1
7.2
7.7
0.96
0.99
1.00
1.00
1.01
1.04
7.2
7.6
7.9
8.0
8.2
8.7
0.96
0.99
1.00
1.00
1.01
1.04
9.3
10.0
10.3
10.5
10.6
11.3
0.96
0.99
1.00
1.00
1.01
1.04
6.1
6.5
6.7
6.8
6.9
7.4
10.3
1.06
1.07
1.08
1.08
1.11
6.8
7.3
7.6
7.7
7.8
8.3
1.03
1.06
1.07
1.08
1.08
1.11
8.9
9.5
9.9
10.0
10.2
10.9
1.03
1.06
1.07
1.08
1.08
1.11
6.0
6.4
6.7
6.8
6.9
7.4
1.04
1.06
1.08
1.08
1.09
1.12
6.8
7.3
7.5
7.6
7.8
8.3
1.04
1.06
1.08
1.08
1.09
1.12
8.9
9.5
9.8
9.9
10.1
10.8
1.04
1.06
1.08
1.08
1.09
1.12
5.8
6.2
6.4
6.5
6.6
7.1
1.10
1.12
1.14
1.15
1.16
1.20
6.5
7.0
7.2
7.3
7.5
8.0
1.10
1.12
1.14
1.15
1.16
1.20
8.5
9.1
9.4
9.5
9.7
10.4
1.10
1.12
1.14
1.15
1.16
1.20
5.7
6.1
6.4
6.4
6.5
7.0
1.11
1.14
1.15
1.16
1.17
1.21
6.4
6.9
7.2
7.2
7.4
7.9
1.11
1.14
1.15
1.16
1.17
1.21
8.4
9.0
9.4
9.4
9.6
10.3
1.11
1.14
1.15
1.16
1.17
1.21
5.4
5.9
6.1
6.2
6.2
6.8
1.16
1.19
1.21
1.22
1.23
1.28
6.1
6.6
6.8
6.9
7.0
7.6
1.16
1.19
1.21
1.22
1.23
1.28
8.0
8.6
8.9
9.1
9.2
9.9
1.16
1.19
1.21
1.22
1.23
1.28
20
0.11
0.81
20
0.12
0.73
28
0.12
0.75
5.3
5.7
5.9
6.0
6.2
6.6
1.19
1.22
1.24
1.25
1.26
1.31
6.0
6.5
6.7
6.8
7.0
7.5
1.19
1.22
1.24
1.25
1.26
1.31
7.8
8.4
8.7
8.9
9.1
9.7
1.19
1.22
1.24
1.25
1.26
1.31
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67 °F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67 °F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67 °F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67 °F)
20: (68°F)
22: (71.6°F)
25:
(77°F)
30:
(86°F)
32.2:
(90°F)
35:
(95°F)
40:
(104°F)
40.6:
(105°F)
45:
(113°F)
46:
(115 °F)
50:
(69.8°F)
52:
(125.5°F)
Evaporator airflow (CMM)
Bypass factors
S.H.F . at rating conditions
Indoor W .B.
1. PERFORMANCE DATA
COOLING CAPACITY
50Hz
Notes: 1. T.C.: Total capacity (kW) …(kcal/h)=(kW)x860, (Btu/h)=4x(kW)x860
C.F.(T.I.) : Correction factors of Total input(Indoor unit input + Outdoor unit input)
2. (°F)=32+9/5(°C)
3. Guaranteed operating range(cooling)
Lower limit … Indoor : D.B. 21°C(70°F), W.B. 15.5°C(60°F), Outdoor : D.B. 21°C(70°F).
{
Upper limit … Indoor : D.B. 35°C(95°F), W.B. 22.5°C(72.5°F), Outdoor : D.B. 452°C(125.5°F).
9
Page 10
COOLING CAPACITY
Service Ref.
Temperature
Outdoor D.B.
21:
(69.8°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
0.81
0.82
0.83
0.83
0.84
0.86
0.84
0.85
0.86
0.86
0.87
0.89
0.90
0.92
0.93
0.93
0.94
0.96
0.93
0.95
0.96
0.97
0.97
0.99
0.96
0.99
1.00
1.00
1.01
1.04
1.03
1.06
1.07
1.08
1.08
1.11
1.04
1.06
1.08
1.08
1.09
1.12
1.10
1.12
1.14
1.15
1.16
1.20
1.11
1.14
1.15
1.16
1.17
1.21
1.16
1.19
1.21
1.22
1.23
1.28
1.19
1.22
1.24
1.25
1.26
1.31
0.81
0.82
0.83
0.83
0.84
0.86
0.84
0.85
0.86
0.86
0.87
0.89
0.90
0.92
0.93
0.93
0.94
0.96
0.93
0.95
0.96
0.97
0.97
0.99
0.96
0.99
1.00
1.00
1.01
1.04
1.03
1.06
1.07
1.08
1.08
1.11
1.04
1.06
1.08
1.08
1.09
1.12
1.10
1.12
1.14
1.15
1.16
1.20
1.11
1.14
1.15
1.16
1.17
1.21
1.16
1.19
1.21
1.22
1.23
1.28
1.19
1.22
1.24
1.25
1.26
1.31
0.81
0.82
0.83
0.83
0.84
0.86
0.84
0.85
0.86
0.86
0.87
0.89
0.90
0.92
0.93
0.93
0.94
0.96
0.93
0.95
0.96
0.97
0.97
0.99
0.96
0.99
1.00
1.00
1.01
1.04
1.03
1.06
1.07
1.08
1.08
1.11
1.04
1.06
1.08
1.08
1.09
1.12
1.10
1.12
1.14
1.15
1.16
1.20
1.11
1.14
1.15
1.16
1.17
1.21
1.16
1.19
1.21
1.22
1.23
1.28
1.19
1.22
1.24
1.25
1.26
1.31
PK-2.5FLD
PK-2.5FLD
1
PK-2.5FLD2
T.C. C.F.
(T.I.)
7.2
7.6
7.9
8.0
8.1
8.6
PK-3FLD
PK-3FLD
1
PK-3FLD2
T.C. C.F.
(T.I.)
8.2
8.7
9.0
9.1
9.3
9.8
PK-4FLSD
PK-4FLSD
1
PK-4FLSD2
T.C. C.F.
(T.I.)
11.5
12.1
12.5
12.7
12.9
13.7
7.0
7.5
7.7
7.8
8.0
8.5
8.0
8.6
8.9
9.0
9.1
9.7
11.2
11.9
12.3
12.5
12.7
13.5
6.8
7.2
7.4
7.6
7.7
8.2
7.7
8.3
8.5
8.7
8.8
9.4
10.8
11.5
11.9
12.1
12.2
13.0
6.6
7.0
7.3
7.4
7.5
8.0
7.6
8.1
8.4
8.5
8.7
9.2
10.6
11.2
11.6
11.8
12.0
12.8
6.5
6.9
7.2
7.3
7.4
7.9
7.4
7.9
8.2
8.3
8.5
9.0
10.3
11.0
11.4
11.6
11.8
12.5
6.2
6.6
6.8
7.0
7.1
7.6
7.1
7.6
7.9
8.0
8.1
8.7
9.9
10.6
10.9
11.1
11.3
12.0
6.1
6.6
6.8
6.9
7.0
7.5
7.1
7.5
7.8
7.9
8.1
8.6
9.8
10.5
10.8
11.0
11.2
12.0
5.9
6.3
6.5
6.6
6.7
7.2
6.8
7.2
7.5
7.6
7.7
8.3
9.4
10.1
10.4
10.5
10.8
11.5
5.8
6.2
6.5
6.6
6.7
7.2
6.7
7.1
7.5
7.5
7.7
8.2
9.3
9.9
10.4
10.5
10.7
11.4
5.6
6.0
6.2
6.3
6.4
6.9
6.4
6.9
7.1
7.2
7.3
7.9
8.9
9.5
9.9
10.0
10.1
11.0
5.4
5.9
6.0
6.2
6.3
6.8
6.2
6.7
6.9
7.1
7.2
7.7
8.7
9.3
9.6
9.8
10.0
10.8
Indoor W .B.
20
0.11
0.78
20
0.12
0.72
28
0.12
0.72
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
16: (60.8°F)
18: (64.4°F)
19: (66.2°F)
19.4: (67°F)
20: (68°F)
22: (71.6°F)
25:
(77°F)
30:
(86°F)
32.2:
(90°F)
35:
(95°F)
40:
(104°F)
40.6:
(105°F)
45:
(113 °F)
46:
(115 °F)
50:
(69.8°F)
52:
(125.5°F)
Evaporator airflow (CMM)
Bypass factors
S.H.F . at rating conditions
60Hz
Notes: 1. T.C.: Total capacity (kW) …(kcal/h)=(kW)x860, (Btu/h)=4x(kW)x860
2. (°F)=32+9/5(°C)
3. Guaranteed operating range(cooling)
C.F.(T.I.) : Correction factors of Total input(Indoor unit input + Outdoor unit input)
Lower limit … Indoor : D.B. 21°C(70°F), W.B. 15.5°C(60°F), Outdoor : D.B. 21°C(70°F).
{
Upper limit … Indoor : D.B. 35°C(95°F), W.B. 22.5°C(72.5°F), Outdoor : D.B. 52°C(125.5°F)…NJ, TJ
10
Page 11
COOLING CAPACITY correction factors
Service Ref.
PK-2.5FLD/1/2
PK-3FLD/1/2
PK-4FLSD/1/2
5m (16ft)
1.0
1.0
1.0
10m (33ft)
0.983
0.978
0.984
50Hz
15m (49ft)
0.972
0.962
0.974
Refrigerant piping length (one way)
20m (66ft)
0.961
0.948
0.964
25m (82ft)
0.951
0.934
0.954
30m (98ft)
0.940
0.921
0.944
35m (115ft)
—
—
0.914
40m (13ft)
—
—
0.902
COOLING CAPACITY correction factors
Service Ref.
PK-2.5FLD/1/2
PK-3FLD/1/2
PK-4FLSD/1/2
5m (16ft)
1.0
1.0
1.0
10m (33ft)
0.978
0.971
0.980
60Hz
15m (49ft)
0.963
0.950
0.966
Refrigerant piping length (one way)
20m (66ft)
0.948
0.931
0.952
25m (82ft)
0.934
0.913
0.939
30m (98ft)
0.921
0.896
0.926
35m (115ft)
—
—
0.941
2. STANDARD OPERATION DATA
Service Ref.
MODE COOLING
Capacity
TotalElectrical CircuitRefrigerant circuit
Input
Indoor unit Service Ref.
phase, Hz
Volts
Amperes
Outdoor unit Service Ref.
phase, Hz
Volts
Amperes
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature
Suction temp.
Ref. pipe length
Intake air temperature
Discharge air temperature
Indoor side
Intake air temperature
side
Outdoor
D.B.
W.B.
D.B.
D.B.
W.B.
W
kw
Mpa
(O/F)
Mpa
(O/F)
:
:
:
m
:
:
:
:
:
PK-2.5FLD
PK-2.5FLD
PK-2.5FLD2
7,000
2.56
PK-2.5FLD
PK-2.5FLD
PK-2.5FLD2
1,50
220
0.44
PU-
2.5VJA
1,50
220
11.4
2.05
(20.9)
0.47
(4.79)
74.3
52
10.3
5
27
19
14.4
35
24
COOLING
PU-
2
2.5NJA1
1
6,650
3.54
1
1,60
220
0.44
1,60
220
15.8
2.13
(21.7)
0.44
(4.49)
87
54
10
5
29
19
14.1
46
24
Total Electrical circuit Refrigerant circuit Indoor side Outdoor side
The unit of pressure has been changed to Mpa on the international system of unit(SI unit system).
The converted score against the traditional unit system can be gotten according to the formula below.
1(Mpa)=10.2(OO/FF)
PK-3FLD
PK-3FLD
PK-3FLD2
COOLING
7,900
3.28
PK-3FLD
PK-3FLD
PK-3FLD2
1,50
220
0.44
PU3VJC
1,50
220
15.1
1.99
(20.3)
0.47
(4.79)
86
51
6
5
27
19
13.0
35
24
1
COOLING
6,900
4.19
1
1,60
220
0.44
PU3NJA
1
1,60
220
20.9
2.07
(21.1)
0.44
(4.49)
70
53
4
5
29
19
13.2
46
24
PK-4FLSD
PK-4FLSD
PK-4FLSD2
COOLING
10,300
3.46
PK-4FLSD
PK-4FLSD
PK-4FLSD2
1,50
220
0.53
PU4YJSA
3
3,50
380
5.7
1.80
(18.4)
0.48
(4.89)
65
49
6
5
27
19
13.6
35
24
1
COOLING
9,900
5.08
1
1,60
220
0.53
PU4TJSA2
3,60
220
14.0
1.93
(19.7)
0.45
(4.59)
74
52
5
5
29
19
13.2
46
24
40m (131ft)
—
—
0.902
3. ADDITIONAL REFRIGERANT CHARGE (R-22…kg(lbs))
Service Ref.
PK-2.5FLD/1/2
PK-3FLD/1/2
PK-4FLSD/1/2
Outdoor unit precharged (kg)
(up to 20m)
V---2.4, N---2.4
V---2.8, Y---2.8, N---3.5
VL---3.8, Y---4.6, T---4.6
20m (66ft)
0
0
0
Refrigerant piping length (one way)
25m (82ft)
0.06(0.13)
0.06(0.13)
0.15(0.33)
11
30m (98ft)
0.12(0.26)
0.12(0.26)
0.30(0.66)
35m (115ft)
—
—
0.45(0.99)
40m (131ft)
—
—
0.6(1.32)
Page 12
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
153
57 18 3
55
58
162
19
ON/OFF TEMP
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
4. OUTLET AIR SPEED AND COVERAGE RANGE
Configuration Wall mounted
PK-2.5FLD
PK-2.5FLD
PK-2.5FLD2
20
4.9
12.4(41)
20
4.9
12.4(41)
Frequency
Airflow
Air speed
Coverage rangew
Airflow
Air speed
60Hz 50Hz
Coverage range
Service Ref.
w
m3/min
m/sec.
m(ft)
m3/min
m/sec.
m(ft)
w The air coverage range is the value up to the position where the air speed is 0.25m/sec. when air is blown out horizontally
from the unit at the Hi notch position.
The coverage range should be used only as a general guideline since it varies according to the size of the room and furniture inside the room.
1
PK-3FLD
PK-3FLD
PK-3FLD2
20
4.9
12.4(41)
20
4.9
12.4(41)
1
PK-4FLSD
PK-4FLSD
PK-4FLSD2
28
5.4
15.3(50)
28
5.4
15.3(50)
1
6
OUTLINES AND DIMENSIONS
1. REMOTE CONTROLLER
PK-2.5FLD
PK-2.5FLD
PK-3FLD
PK-3FLD
PK-4FLSD
PK-4FLSD
1
1
1
Unit : mm
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
12
Page 13
235
45
235
45
235
45
235
62.5
13
58
42
340
197
Top
Front
Right side
Left side
1400
1090
Air intake
235
C
Knock out hole for right piping
Refrigerant pipe. Drain pipe
Knock out hole for
left piping
Drain hose for
left-hand side piping
Drain hose
Lower side
Auto vane
(Gas pipe)
Drain hose
Bolt
Gas pipe
15
Terminal block for power supply
Terminal block for control
(Liquid pipe)
Liquid pipe 9.52(3/8F)
Gas pipe 15.88(5/8F)
Liquid pipe
A
30
32
39
98
37
74
439
100
30
37
74
4
2980
280
3030
18430
60
10
39
37
65
100
AB C
Knock out hole for piping
25
1110
183
240
B
1120
552
55
120
107
111
Air outlet
552
Air outlet
Change vane (manual)
Under panel
Removable at left-hand
side piping
Knock out hole for under-piping
Refrigerant pipe. Drain pipe
Rear piping opening
Range for left rear piping opening
12-ø6 hole for
tapping screw
66-ø6 hole for
tapping screw
Wall fixture
Unit center
32-ø12 hole for bolt
225
18
18
91
900
990
455
285
245
19
240 280 314
610
90
Drainage range
on left-hand side
Drainage range
on right-hand side
10 91=(910)
180
2. INDOOR UNIT
PK-2.5FLD PK-3FLD
PK-2.5FLD1 PK-3FLD1
PK-2.5FLD2 PK-3FLD2
Unit : mm
13
Page 14
235
45
235
45
235
45
235
45
235
62.5
13
58
42
340
197
Top
Front
Right side
Left side
1680
1370
Air intake
235
C
Knock out hole for right piping
Knock out hole for left piping
Drain hose for left-hand side piping
Drain hose
Drain hose
Lower side
Auto vane
(Gas pipe)
Bolt
Gas pipe
15
Terminal block for power supply
Terminal block for control
(Liquid pipe)
Gas pipe 19.05(3/4F)
Liquid pipe 9.52(3/8F)
Liquid pipe
A
30
32
39
98
37
74
439
100
30
37
74
4
2980
280
3030
18430
60
10
39
37
65
100
AB C
Knock out hole for wiring
25
1110
183
240
B
1400
55
120
102
111
694
Air outlet
694
Air outlet
Change vane (manual)
Under panel
(Removable at left-hand side piping)
Knock out hole for under-piping
Refrigerant pipe. Drain pipe
Rear piping opening
Range for left rear piping openingRange for left rear piping opening
12-ø6 hole for tapping screw
84-ø6 hole for
tapping screw
Wall fixture
Unit out line
Unit center
41-ø12 hole for bolt
295 225
18
18
91
900
1270
595
285
245
19
240 280 314
750
90
Drainage range
on right-hand side
13 91=(1183)
180
Drainage range
on left-hand side
PK-4FLSD
PK-4FLSD1
PK-4FLSD2
Unit : mm
14
Page 15
7
X4
SW1
OFF
ON
12345678
OFF
ON
12345678
PK-4FLSD
PK-2.5FLD
PK-3FLD
MODELS
REMOTE
CONTROLLER
65432
RT2
2
SW1
CN27
D.U.M
1
JR
N
GRN/YLW
L
I.B
TO OUTDOOR UNIT
CONNECTING WIRES
DC12V
1
T
X4
ZNR
F2 F1
C
MF
MV
CNB
LD1
Ru
SW1
54321
1
1
6
7
1
1
43
2
35
3
211 133
FAN1
POWER
OUTDOOR
TIMER
WIRELESS
TRANS
VANE
L.TEST
CN2A
TWIN-1
CN2B
TWIN-2
TRANS
CND
CN30
CN2
CN70
CN6V
CN4T
CN28
CNT
DRAIN
CN50
INTAKE
CN20
PIPE
CN21
CN51
MULTIPLE
1122
SW2
SW3
ON
ON
OFF
OFF
123
1234567812345
RT1
7
W.R
TB4
6
W.B
TB2
ORN
YLW
BRN
BRN
RED
RED
240V
14.5VAC
10.6VAC
230V
220V
BLU
YLW
WHT
RED
BLK
WHT
RED
POWER SUPPLY
~(1 PHASE)
AC220-240V 50Hz
AC220V 60Hz
YLW
ORN
RED
7
WIRING DIAGRAM
PK-2.5FLD PK-3FLD PK-4FLD
PK-2.5FLD1 PK-3FLD1 PK-4FLD1
PK-2.5FLD2 PK-3FLD2 PK-4FLD2
SYMBOL
C
CN2<I.B>
CN2A<I.B>
CN2B<I.B>
CN27<I.B>
CN28<I.B>
CN51<I.B>
F1,2<I.B>
FAN MOTOR CAPACITOR
TIMER ADAPTOR CONNECTOR
TRANSMISSION WIRES No.1 CONNECTOR
TRANSMISSION WIRES No.2 CONNECTOR
DRAIN LIFE-UP MECHANISM
TIME SHORTENING CONNECTOR
MULTIPLE CONNECTOR
FUSE(6.3A 250V)
I.B
INDOOR CONTROLLER BOARD
JUMPER RESISTORS (FUNCTION SELECTOR)
JR
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:
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.
4. Symbols used in wiring diagram above are, : Connector, : Terminal block.
5. Emergency operation
[Check items]
[Emergency operation procedure]
fig w1
Indoor fan motor (MF) for 230,240V.
fig w2
When power supply is
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.
(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
(1) Set the dip switch (SW3 <I.B>) on the indoor controller board to 1 • 2 on and 3 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.
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).
(The indoor unit heat exchanger may freeze).
NAME
230V
220V
w
1.
SYMBOL
MF
MV
RT1
RT2
Ru<W.B>
SW1<I.B>
SW2<I.B>
SW3<I.B>
T
ON
OFF
220V
230V
240V
FAN MOTOR
VANE MOTOR
ROOM TEMPERATURE THERMISTOR
(0%/15k",25°C/5.4k" DETECT)
PIPE TEMPERATURE THERMISTOR
(0%/15k". 25%/5.4k" DETECT)
RECEIVING SELECTOR UNIT
FUNCTION SELECTOR SWITCH
UNIT SELECTOR SWITCH
EMERGENCY OPERATION SWITCH
TRANSFORMER
NAME
SW1 SW1
3 4 5 6 7 8
2
1
RED
ORANGE
YELLOW
ON
OFF
3 4 5 6 7 8
2
1
SYMBOL
X4<I.B>
SW1<W.B>
LD1<W.B>
TB2
TERMINAL BLOCK (POWER SUPPLY)
TERMINAL BLOCK
TB4
(INDOOR/OUTDOOR CONNECTING WIRE)
FAN MOTOR RELAY
VARISTOR
ZNR
ON/OFF SWITCH
LED (RUN INDICATOR)
WIRELESS REMOTE CONTROLLER BOARD
W.B
WIRELESS REMOTE CONTROLLER
W.R
NAME
15
Page 16
8
INDOOR UNIT
PK-2.5
PK-3
PK-4
OUTDOOR UNIT
PU-2.5/3J series
PU-4J series
Flexible tube
Flared
connection
Strainer
Flared
connection
PK-2.5
/ PK-3 Refrigerant pipe [15.88(5/8")
(with insulator) option
PK-4 Refrigerant pipe [19.05(3/4")
(with insulator) option
Refrigerant pipe [ 9.52(3/8")
(with insulator) option
Low pressure
switch
Charge
pIug
Check
pIug
High pressure
switch
Outdoor heat
exchanger
Muffler
Strainer
Capillary tube for
injection Only
PU-2.5NJA
1
PU-2.5VJA
2 PU-4TJSA2
PU-3NJA1 PU-4YJSA3
Capillary
tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
PU-2.5 [O.D.3.2 I.D.1.6 L760] 2pcs
PU-3 [O.D.3.2 I.D.1.8 L800] 2pcs
PU-4 [O.D.3.2 I.D.2.0 L840] 2pcs
Capillary tube size
Ball
valve
strainer
Indoor heat
exchanger
Distributor
with
strainer
Pipe
temperature
thermistor
RT2
Indoor heat
exchanger
Distributor
with
strainer
Flexible tube
Flared
connection
Flared
connection
Refrigerant pipe [15.88(5/8")
(with insulator) option
Refrigerant pipe [ 9.52(3/8")
(with heat insulator) option
Ball
valve
Low pressure
switch
Charge
pIug
Check
pIug
High pressure
switch
Outdoor heat
exchanger
Capillary tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
[O.D.3.2 oI.D.1.8 oL800]
o2pcs
strainer
Pipe
temperature
thermistor
RT2
D.P.R.
(Discharge pressure regulator)
strainer
strainer
REFRIGERANT SYSTEM DIAGRAM
PK-3FLD, PK-3FLD1, PK-3FLD2 / PU-3VJC, PU-3YJC
Unit : mm(inch)
PK-2.5FLD, PK-2.5FLD1, PK-2.5FLD2 / PU-2.5VJA2, PU-2.5NJA
PK-3FLD, PK-3FLD1, PK-3FLD2 / PU-3NJA
1
1
PK-4FLSD, PK-4FLSD1, PK-4FLSD2 / PU-4VLJSA2, PU-4YJSA3, PU-4TJSA
16
2
Page 17
OPERATION FLOW-CHART9
START
STOP
EMERGENCY
ALL STOP
COOL OPERATION
DRY OPERATION
POWER SUPPLY
Live
ON/OFF
button ON
Abnormal
operation mode
MODE SELECT
button
POWER lamp ON
Protection device
Self hold reset
Protection device
Self hold
Self-diagnostic function
Indicate & Memory
NO
NO
YES
<Note 3>
<Note 4>
NO
1
NO
YES
YES
COOL
DRY
1. Main operation
Note1. The unit starts operation by pressing the ON/OFF switch when unit is OFF.
During operation, the unit stops operation by pressing the ON/OFF switch.
In addition, operation can be turned ON/OFF with the centralized remote controller or the remote switch.
Note2. The factors which cause “abnormal operation mode” are as follows.
● Outdoor unit abnormal operation.
● Fault of room temperature thermistor(RT1).
● Fault of pipe temperature thermistor(RT2).
● Indoor coil frost protection mode.
● Fault of drain sensor(DS).
● Drain water overflow prevention mode.
Note3. The indoor fan runs on the low speed for 1 minute to eliminate remaining heat.
Refer to page 28 for abnormal operation, mode details.
Note4. The compressor will not start for 3 minutes after the stop.
17
Page 18
1
COOL operation
3 min. delay
6-minute
time delay
Compressor start
3 minutes elapse
Coil frost
protection
Range C
Compressor
start 10 minutes
elapse
Coil frost
prevention
Pipe
temperature
10°C or below
Compressor
start 16 minutes
elapse
Pipe
temperature
1°C or below
YES
YES
YES
YES YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO NO
<Note 5>
<Note 6>
<Note 7>
NO
NO
Allowance release
3-minute time delay
Coil frost
prevention release
Coil frost
prevention set
Compressor OFF
Compressor ON
Compressor
thermostat ON
Allowance release
Allowance
6-minute time delay
Coil frost
protection
check mode
Continue
1 minute
Fan speed LOW
Fan speed LOW
5 minutes elapse
Outdoor unit abnormality
check mode
Allowance set
2. COOL operation
Note5. The thermostat is continuously ON during the test run.
Note6. Refer to page 20 for coil frost protection.
Note7. Range A: The pipe temperature is more than 5 degrees above room temperature.
Range B : The pipe temperature is within 5 degrees either way of room temperature.
Range C : The pipe temperature is more than 5 degrees below room temperature.
18
Page 19
3. DRY operation
Dry operation
Room
temperature
18°C or below
Compressor ON
Compressor ON
3 min. elapse
Compressor
thermostat ON
Compressor ON
time completed
Compressor OFF
10-minute timer start
Compressor OFF
Fan stop
Compressor ON
3 min. delay
YES
YES
YES
YES
YES
YES
YES
YES
<Note 10> <Note 10>
<Note 5>
<Note 5>
<Note 9>
<Note 8>
YES
NO
NO
NO
NO
NO
NO
NO
Compressor
thermostat ON
Compressor OFF
10 minutes completed
Compressor ON
time set
Compressor ON
Fan speed LOW
1
Note8. When room temperature is 18°C or below, the compressor can not turn ON. When the room temperature rises to
18°C or above, the compressor will start operation after a 3-minute time delay.
Note9. Refer to page 23 for the compressor operation time.
Note10. In DRY operation, the indoor fan runs on the low speed during the compressor ON and stops during the compressor
OFF.
19
Page 20
10 MICROPROCESSOR CONTROL
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
1.OUTLINE OF MICROPROCESSOR CONTROL
INPUT to remote controller OUTPUT to remote controller
● OFF-ON switching.
● COOL • DRY • FAN selector switching.
● HIGH-LOW fan speed switching.
● TIMER mode selector-switching
● Timer setting.
● Self diagnostic troubleshooting.
● TEST RUN switching.
● CHECK mode switching.
● AUTO Vane setting.
Indoor unit
●Processes and transmits orders.
● Indication LCD lights.
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
REMOTE CONTROLLER
INPUT from indoor unit
● Room temperature thermistor.
● Pipe temperature thermistor.
OUTPUT to indoor unit
● Fan: ON-OFF.
● Fan speed: HIGH-LOW.
● AUTO vane’s angle setting.
● Emergency stop.
Independent Control of
Outdoor Unit
INPUT from outdoor unit
INDOOR CONTROLLER BOARD
● Receives orders from remote controller and temperature
data from indoor unit.
● Processes orders and data.
● Controls indoor and outdoor operation.
● Self diagnostic function
w System control operation.<Optional>
w Emergency operation
Non-polar, two (2) - core cable
Outdoor unit
12VDC
OUTPUT UNIT
● Compressor protection device working.
● Receives orders from
● Emergency stop.
OUTPUT from outdoor unit
● Compressor motor and outdoor fan motor : ON-OFF.
indoor controller.
20
Page 21
2. INDOOR UNIT CONTROL
Thermostat
Operation starts by
POWER button
ON.
ON
OFF
Indoor fan
ON
OFF
Auto vane
ON
OFF
Compressor
ON
OFF
w1 Even if the room temperature rises above the set temperature during this period, the compressor will not start
until this period has ended.
LOW or HIGH
CLOSE CLOSE
LOW or HIGH
Depends on remote controller setting
MIN. 3 minutes w1
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
Operation stops by
POWER button
OFF.
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
/
/
/
/
2-1 COOL operation
<How to operate>
1 Press [ ON/OFF button.
2 Press MODE button to set operation mode to COOL .
3 Set desired temperature with or button.
button.
NOTE: 1. Set temperature changes by 1 °C in the range 19-30 °C
each TEMP or button is pressed.
2. Set temperature is displayed on the LCD.
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
<COOL operation time chart>
(1)Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode or during protective functions.
4 Coil frost prevention
To prevent indoor coil frost, the compressor will stop when the pipe temperature thermistor (RT2) reads 1°C or below after
the compressor has been continuously operated for 16 minutes or more. The coil frost prevention is released under any of
the following conditions.
● The pipe temperature thermistor rises to 10°C or above.
● The room temperature becomes equal to or lower than the set temperature.
● COOL mode is stopped or changed to another mode.
NOTE : By cutting the jumper wire JR02 on the indoor controller board, the temperature to start coil frost prevention
changes from 1°C to - 3°C
21
Page 22
5 Coil frost protection
Automatic
swing
(PK-2.5/3/4)
10°
30°
60° (PK-2.5/3/4)
70° (PK-2.5/3/4)
When the pipe temperature becomes - 15°C or below, coil frost protection will proceed as follows.
<Start condition>
After the compressor has been continuously operated for 3 minutes or more, and the pipe temperature has been - 15°C or
below for 3 minutes, the coil frost protection will start.
<Coil frost protection>
Compressor stops for 6 minutes, and then restarts.
If the start condition is satisfied again during the first 10 minutes of compressor operation, both the indoor and outdoor units
stop, and the remote controller displays this occurrence.
<Termination conditions>
Coil frost protection released when the start condition is not satisfied again during the allowance, or when the COOL mode
stops changes another mode.
(2)Indoor fan control
Indoor fan speed depends on the remote controller setting.
However, if an outdoor unit abnormality is detected, the indoor fan speed will be LOW, regardless of the remote controller
setting.
(3)Auto vane control
Auto vane position depends on the remote controller setting.
(4)Detecting abnormalities in the outdoor unit
After the compressor has been continuously operated for 3 minutes, if the difference between the pipe temperature and the
room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the difference is still out of RANGE C, the outdoor unit is functioning abnormally. Thus, the compressor will stop and the remote controller will display this occurrence.
RANGE A : The pipe temperature is more than 5 degrees above room temperature.
RANGE B : The pipe temperature is within 5 degrees either way of room temperature.
RANGE C : The pipe temperature is more than 5 degrees below room temperature.
(5)AUTO VANE CONTROL
11
Frequency judgement
When the unit operates for the first time after the circuit breaker turned to ON, the frequency, 50Hz or 60Hz, is judged by
the horizontality sensing switch. If The frequency cannot be judged immediately for some reason, the sensing operation
continues for 3 minutes with the vane motor at ON.
If the frequency cannot be judged yet after 3-minute sensing, the vane motor turns to OFF. But the AIR DISCHARGE
DIRECTION display continues to be indicated.
22
During cooling operation
When the cooling operation starts, the vane is automatically set to the horizontal However, the desired direction among four
below-listed can be selected with the vane button on the remote controller.
a) 10°
b) 30° downward
c) 60° downward (PK-2.5/3/4FL(S)A)
d) 70° downward (PK-2.5/3/4FL(S)A)
e) Automatic swing
NOTE : 30° is available only when the fan speed is HIGH.
<AUTO RETURN>
When discharge 60° or 70° continues for 1 hour with the fan speed at LOW, the
discharge direction turns to the horizontal discharge automatically.
NOTE1 : After that, 60° or 70° is available by setting with the remote controller, and
it continues for 1 hour.
NOTE2 : If the discharge direction changes from 60° or 70° , the direction returns
to the horizontal discharge when 1 hour has passed since the discharge 60° started.
NOTE3 : If the discharge direction changes from 60° (or 70° ) to the horizontal discharge, the 1-hour timer to return the horizontal discharge is cancelled.
33
During the operation OFF, the auto vane is in the airflow shut-off position.
44
When the vane motor is out of order or the connector is badly connected, the
remote controller display of the remote controller does not change.
22
Page 23
2-2 DRY operation
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
/
/
/
/
Thermostat
Operation starts by
POWER button
ON.
ON
OFF
Indoor fan
ON
OFF
Auto vane
ON
OFF
Compressor
ON
OFF
w2 Even if the room temperature rises above the set temperature during this period, the compressor will not start until
this period has ended.
LOW speed
CLOSE CLOSE
LOW speed
Depends on remote controller setting
MIN. 3 minutes w2
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
Operation stops by
POWER button
OFF.
<How to operate>
1 Press [ ON/OFF button.
2 Press MODE button to set operation mode to DRY .
3 Set desired temperature with or button.
NOTE: 1. Set temperature changes by 1 °C in the range 19-30 °C
each TEMP or button is pressed.
2. Set temperature is displayed on the LCD.
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
PK-2.5FLD
PK-3FLD2
PK-4FLSD2
2
(1)Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode or during protective functions.
4 The compressor will not start when the room temperature is below 18 °C. The compressor starts intermittent operation
when the power is turned ON with room temperature above 18 °C. The compressor ON/OFF time depends on the thermostat ON/OFF and the room temperature as follows.
After 3-minute compressor operation,
● If the room temperature thermistor reads above 28 °C with thermostat ON, the compressor will operate will operate for 6
more minutes and then stop for 3 minutes.
● If the room temperature thermistor reads 26 °C ~ 28 °C with thermostat 0N, the compressor will operate for 4 more minutes and then stop for 3 minutes.
● If the room temperature thermistor reads 24 °C ~ 26 °C with thermostat ON, the compressor will operate for 2 more minutes and then stop for 3 minutes.
● If the room temperature thermistor reads below 24 °C with thermostat ON, the compressor will stop for 3 minutes.
●If the thermostat is OFF, regardless of room temperature, the compressor will stop for 10 minutes.
5 Coil frost protection
Coil frost protection in DRY operation is the same as in COOL operation.
6 Coil frost prevention
Coil frost prevention does not operate in DRY operation.
23
Page 24
(2) Indoor fan control
ON/OFF TEMP
FAN
VANE
TEST RUN
AUTO STOP
AUTO START
h
min
LOUVER
MODE
CHECK
RESETSET CLOCK
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
MODE
FAN
VANE STOP
START
CLOCK
HR MIN.
ON/OFF TEMP
FAN
VANE
TEST RUN
AUTO STOP
AUTO START
h
min
LOUVER
MODE
CHECK
RESETSET CLOCK
MODEL SELECT
NOT AVAILABLE
CHECK
TEST RUN
˚C
AMPM
AMPM
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
MODE
FAN
VANE STOP
START
CLOCK
HR MIN.
h
HR
/
min
MIN.
/
STOP
/
AUTO STOP
/
START
AUTO START
The indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote controller.
Also, the indoor fan does not run during compressor OFF.
(3)Auto vane control
Same as in COOL operation.
(4)Detecting abnormalities in the outdoor unit
An abnormality in the outdoor unit can not be detected in DRY operation.
2-3 FAN operation
<How to operate>
1 Press POWER ON/OFF button.
2 Press MODE button to set operation mode to Fan .
(1) Indoor fan control
The indoor fan speed depends on the remote controller setting.
(2) Auto vane control
The auto vane position depends on the remote controller setting.
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
2-4 TIMER operation
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
<How to operate>
1 Push POWER ON/OFF button.
2 Check if or not the current time is correct.
3 Push the or button and select the desired
time.
4 Set the timer time using and buttons.
24
Page 25
2-5 Test run
MODE
COOL
TEST RUN
FAN
VANE
TEST RUN
PK-2.5FLD, PK-2.5FLD
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
˚C
AM
PM
AM
NOT AVAILABLE
PM
Measure an impedance between the power supply terminal block and ground with a 500V
Megger and check that it is equal to or greater than 1.0M".
1
(1) Turn on the main power of unit.
(2) Turn the adjusting switch on the back of the
wireless remote controller to “SET”
CHECK and TEST RUN will
start flashing.
★(3) Push the MIN button TEST RUN and
the operating mode will be displayed (Refer
to the illustrated sample display at left)
Wireless remote controller with backside battery
cover removed Display will start finishing.
Display will start flashingTurn the adjusting switch to "SET"
ON / OFF
MODE
VANE STOP
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
6
3
2
CLOCK
FAN
START
HR MIN.
ON/OFF
MODE
CHECK
TEST RUN
SET
TEST RUN
FAN
VANE
LOUVER
RESET
CLOCK
★(4) Push the MODE button, change the
mode to “FAN” and make sure that there
will be blowout of air.
★(5) Push the MODE button, change the mode
to COOLand make sure that there will be
blowout of cool air.
★(6) Push the FAN button and make sure that
there will be strong (or weak) blowout of air.
★(7) Push the VANE button and verify the
operation of the auto vane.
★(8) Push the POWER ON/OFF button and
cancel the test run.
(9) After completing a test run, be sure to
turn the adjusting switch back to “Nrm”.
● The test run automatically stops in 2 hours.
● Set temperature is not displayed during test run.
Test run
Measure an impedance between the power supply terminal block
and ground with a 500V Megger and check that it is equal to or
greater than 1.0M".
1 Turn on the main power to the unit.
A
2 Press the button twice continuously.
(Start this operation from the status of remote controller display
turned off.)
A and current operation mode are displayed.
TEMP
3 Press the ( ) button to activate mode, then
check whether cool air is blown out from the unit.
4 Press the button and check whether strong air is blown out
from the unit.
AUTO STOP
4
AUTO START
5 Press the button and check whether the auto vane operates
properly.
6 Press the ON/OFF button to stop the test run.
5
h
min
Note:
• Point the remote controller towards the indoor unit receiver
while following steps 22to 66.
• It is not possible to run the in FAN, DRY mode.
After refiling batteries.
Press the reset button.
Nrm Set
Reset
3
2
4
1
5
0
6
9
7
8
ON / OFF
For operations marked "★", point the transmitter to the
wireless receiver, and make sure that you will hear a
short beep from the receiver.
25
Page 26
2-6 Emergency operation
When the remote controller or microprocessor malfunctions and no other trouble exists, emergency operation is available
by setting the dip switch on the controller board.
[Check items]
(1) Make sure the compressor and the fans are running normally.
(2) Locate the trouble with the self-diagnostic function.If the self-
diagnostic function indicates that the protection device (such
as coil frost protection) is functioning, the sources must be
removed before attempting emergency operation.
Emergency operation ON/OFF is activated not with the
remote controller but with the circuit breaker.
[Emergency operation procedure]
(1) Cooling operation is available by setting the dip switch SW3
1and 2 ON and 3 OFF on the indoor controller board.
(2) To start emergency operation, turn the outdoor side circuit
breaker ON first, and then the indoor side circuit breaker ON.
(3) During emergency operation, the indoor fan runs on HIGH
speed, the compressor runs continuously, and the louver
SW3
ON
OFF
123
COOLING
SW3 INDOOR CONTROLLER BOARD
stops.
(4) Thermostat will not function.
(5) Do not use emergency cooling operation for more than 10
hours, as the indoor coil may freeze.
2-7 Function of jumper wire and dip switch on indoor controller board
1. Jumper wire
1 JR01:Jumper wire for the auto vanes
Cut JR01 for the unit WITHOUT auto vanes.
2 JR02:Jumper wire for the temperature to start coil frost prevention
Cutting JR02 changes the temperature from +1°C to -3°C.
3 JR03:Jumper wire for set temperature adjustment in HEAT mode
In HEAT operation, heated air stagnates in the upper part of the room. The indoor unit installed in the upper part of
the room will detect the air temperature higher than the actual temperature in the living space. This difference is
about 4 degrees. Therefore, the temperature detected by the room temperature thermistor should be corrected 4
degrees down. The unit with JR04 attached will make this adjustment.
4 JR04:Jumper wire for the indoor fan speed during thermostat OFF in HEAT mode
Cutting JR04 Changes the speed from Extra-Low to Low.
5 JR05:Jumper wire for detecting abnormalities in the outdoor unit
Cutting JR05 makes this detection unavailable. (Occurrence of abnormality can not be detected.)
6 JR06:Jumper wire for auto restart function
Cutting JR06 makes the auto restart function available.
2. Dip switch
1 SW1 (Function switch)
SW1-1) Switch for power supply
SW1-2) Switch for single or twin control
SW1-3) Switch for unit number in twin control (This switch is valid when SW1-2 is ON.)
ON
OFF
123
4567 8
ON :220V
OFF :230V, 240V
ON :Twin control
OFF :Single control
ON :Unit No.2
OFF :Unit No.1
26
Page 27
SW1-4 ~ SW1-6) Switch for capacity of each model
PK-2.5
PK-3
ON
OFF
456
SW1-7 ~ SW1-8) Switch for the pair number of wireless remote controller
0
ON
OFF
78
The pair number setting of the wireless remote controller is needed.
(Refer to the next page for the details.)
2 SW2 (Unit switch)
ON
OFF
123
ON
OFF
45
ON
OFF
PK-4
456
1
78
2
ON
OFF
78
3
ON
OFF
78
SW2-1) Switch for air conditioner with or without electric heater
ON :Unit with electric heater
OFF :Unit without electric heater
SW2-2) Switch for air conditioner with or without heat pump
ON :Unit with heat pump
OFF :Unit without heat pump
SW2-3, SW2-4, SW2-5) Switch for function code
PK-2.5
PK-3
PK-4
ON
OFF
345
3 SW3 (Emergency operation switch)
Normal operation
12
ON
OFF
For emergency cooling
3
ON
OFF
12
3
27
Page 28
2-8 Wireless remote controller pair number setting operation
Pair Number
0
1
2
3
Pair NumberSW1 SW1
123456
ON
OFF
78
123456
ON
OFF
78
123456
ON
OFF
78
123456
ON
OFF
78
0
9
8
7
6
5
4
3
2
1
Nrm Set
Reset
After refiling batteries.
Press the reset button.
A
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
MODEL SELECT
4
A
5
1,4
Model No.
MODEL SELECT
min
A Pair No. of wireless
remote controller
Indoor PC board
< SW1 >
0
1
2
3~9
123456
ON
OFF
78
123456
ON
OFF
78
123456
ON
OFF
78
123456
ON
OFF
78
PK-2.5FLD, PK-2.5FLD1
PK-3FLD, PK-3FLD1
PK-4FLSD, PK-4FLSD1
Switches are located on the indoor unit PC board and inside the remote controller as shown.
• Setting the SW1 (PC board inside indoor unit)
Sub-switches 7 or 8 of SW1 can be used as foolws to assign a pair No.
• The pair No. SW of the remote controller has been set to ‹‹0›› at the time of
ship-ment.
Note:
Make sure that the pair No. AAof the remote controller matches that of
the indoor unit PC board.
PK-2.5FLD2
PK-3FLD2
PK-4FLSD2
1 Turn on the main power to the unit.
2 Press the SET button with the point of a ball-point pen or the like.
Start this operation from the status of remote controller display turned off.
blinks and Model No. is lighted.
3 Press the button twice continuously.
A Pair No. “0” blinks.
4 Press the temp button to set the pair number you want to set.
5 Press the SET button with the point of a ball-point pen or the like.
Set pair number is lighted for three seconds then turned off.
28
Page 29
11
MODE
FAN
VANE STOP
START
CLOCK
HR MIN.
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
ON / OFF
0
9
8
7
6
5
4
3
2
1
Nrm Set
Reset
After refiling batteries.
Press the reset button.
Display will start flashing
Turn the adjusting switch to "SET"
TROUBLESHOOTING
1. Self-diagnostic function [for PK-2.5FLD/1, PK-3FLD/1, PK-4FLSD/1 ]
(1) Turn on the main power of the unit.
(2) Set the adjusting switch on the back of
the wireless remote controller to “Set”
CHECK and TEST RUN will start lighting.
★(3) Push the HR button, CHECK will start
blinking.
★(4) Send the signal from the remote controller
to the unit with pressing HR button.
If the buzzer sound is heard and the
ON/OFF lamp (unit display) blinks, refer to
following table.
The number of
Buzzer sound
ON/OFF lamp
(Unit display) blinking
1 second
(0.5 second interval)
Beep
This corresponds
to the number of
buzzer sound
The number of
ON/OFF lamp
(Unit display) blinking
Irregular point
and buzzer sound
1
2
4
5
6
8
9
Irregular intake sensor
Irregular piping sensor
Irregular drain sensor
Irregular drain pump
Freezing protected
Irregular outdoor unit
NO irregular
(Refer to next page in detail)
Remove the battery cover on the back side of the
wireless remote controller, display will start flashing
when the “Set” switch is turned on.
For operations marked “★”, point the transmitter to
the wireless receiver, and make sure that you will
hear a short beep from the receiver.
★(5) Push the POWER ON/OFF button and
cancel the test run.
(6) After completing a test run, be sure to
turn the adjusting switch back to “Nrm”.
For operations marked "★", point the transmitter to the wireless
receiver, and make sure that you will hear a short beep from the
receiver.
29
Page 30
ON/OFF
TEMP
FAN
VANE
MODE
CHECK
LOUVER
TEST RUN
AUTO STOP
AUTO START
h
min
RESET
SET
CLOCK
4
3
2
1. Self-diagnostic function
CHECK
h
ON/OFF
Check Code
1
2
3
4
5
6
7
8
9
Suction sensor alarm
Plpe sensor alarm
Transmission alarm
Drain sensor alarm
Drain pump alarm
Anti-freezing on
Anti-overheat on
System error
Outdoor unit alarm
No alarm (no error)
Single beep ✕ 1
Single beep ✕ 2
Single beep ✕ 3
Single beep ✕ 4
Single beep ✕ 5
Single beep ✕ 6
Single beep ✕ 6
Single beep ✕ 7
Single beep ✕ 8
Receiving signal only
(no error alarm)
Alarm Buzzer sound
[for PK-2.5FLD2, PK-3FLD2, PK-4FLSD2]
1 Turn on the main power to the unit.
2 Press the button twice continuously.
• begins to light and refrigerant address display “00” begins to bink.
• Start this operation from the status of remote controller display turned off
3 While pointing the remot controller toward the unit’s receiver, press the
button
• If the buzzer sounfd is heard and the ON/OFF lamp (unit display) blinks,
refer to following table.
4 While pointing the remote controller toward the unit’s receiver, press the
ON/OFF button.
• Self-check mode is canceled.
2. OTHER TROUBLES AND CAUSES
Auto vanes do not work.
Unit stops after 5 to
20 seconds operation
Power ON/OFF button
is not available.
Auto vane motor does not work.
Connector is poorly connected.
Auto vane motor is poorly assembled.
Indoor controller board is damaged.
Protection function is working.
Indoor/outdoor connecting wire is connected
incorrectly.
Indoor/outdoor connecting wire shorts.
Compressor protector is damaged.
Outdoor controller board is defective.
Remote controller is damaged.
Transmission wire is poorly connected
Auto vane motor is damaged.
Auto vane motor relay is damaged.
Refer to check code on remote controller display.
Transmission wire is damaged.
Connector is poorly connected.
30
Page 31
Check
code
1
2
Diagnosis of malfunction Cause Check points
Abnormality of room temperature thermistor (RT1)
Abnormality of pipe temperature thermistor (RT2)
1) Bad contact of thermistor
2) Damaged thermistor
1) Check the thermistor.
2) Measure the resistance of the thermistor.
Normal resistance should be as follows.
0: ···15kΩ 30:·····4.3kΩ
10:······9.6kΩ 40:·····3.0kΩ
20:······6.3kΩ
If the resistance is normal, replace the indoor
controller board.
Abnormality of drain sensor 1) Bad contact of transmission
4
Malfunction of drain pump 1) Malfunction of drain pump
5
Coil frost protection is work-
6
ing.
Abnormality in outdoor unit
8
❈ The number of check code shows times of Buzzer sound.
wire
2) Damaged thermistor
2) Damaged drain sensor
1) Short cycle of air cycle
2) Dirty air filter
3) Damaged fan
4) Abnormal refrigerant
1) Wrong wiring of indoor/outdoor
connecting wire
2) Reversed phase
3) Protection device is working
1) Check the connector.
2) Measure the resistance of the thermistor
(between ➃ - ➄of CN50).
As for the normal resistance, refer to the case
of P1.
If the resistance is normal, replace the indoor controller board.
1) Check the drain pump.
2) ● Check the drain sensor.
● Check the drain sensor heater. Normal resis-
tance should be 82Ω. (between 1 - 3of
CN50).
If the resistance is normal, replace the indoor controller board.
1) Clear obstructions from the air cycle.
2) Clean the air filter
3) Check the fan.
4) Check the refrigerant temperature.
1) Check the indoor/outdoor connecting wire.
2) Change the connection of electric wiring.
3) Check the protection device.
3.WHEN OUTDOOR UNIT DOES NOT WORK
Cause
1) Indoor/outdoor connecting wires are poorly connected.
(Refer to the below.)
2) Power supply is poorly connected.
3) Connector is broken.
4) Fuse (5A) in the outdoor controller board is blown.
1) Check the connecting wires.
2) Check the power supply.
3) Check connector.
4) Check the fuse.
4. WRONG WIRING ON SITE
Symptom due to wrong wiring between indoor and outdoor units
Wrong wiring
Disconnect between 1 and 1 or 2 and
2.
Thermostat
OFF Operation stops.
ON
9 minutes later, the check code ¨P8¨ appears on the remote controller display.
Check points
Phenomena
31
Page 32
5. How to check the parts
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (K")
Parts name Check points
Room temperature
thermistor (RT1)
Pipe temperature
thermistor (RT2)
Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)
Normal
4.3k'~9.6k'
Abnormal
Open or short
Transformer
CNT T CN4T
WHT
1
2
3
YLW
BRN
RED
Fan motor
Relay connector
1
3
5
Protector
OFF : 130i5˚C
ON : 80i20˚C
Vane motor
Orange
4
Red
5
Pink
2
Yellow
Connector
3 6 1
Red
White
Black
Brown
Disconnect the connector and measure the resistance using a tester.
1
2
3
4
CNT(1)-(3)
CN4T(1)-(2)
CN4T(3)-(4)
WHT. Approx. 135'
BRN. Approx. 0.5~2.0'
RED. Approx. 1.0~2.0'
Normal
Abnormal
Open or short
Measure the resistance between the terminals using a tester.
Motor terminal
1
Relay connector
3
5
White-Black
or
Red-White
2.5, 3FLD/1/2
99.5'i10%
103.5'i10%
Normal
PK-
4FLSD/1/2
62.6'i10%
74.0'i10%
Abnormal
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20°C~30°C)
Normal
M
Blue
Brown-Yellow
Brown-Blue
Red-Orange
186~214'
Abnormal
Open or short
Red-Pink
<Thermistor Characteristic graph>
Thermistor for
lower temperature
Thermistor R0=15k' ±3%
Fixed number of B=3480k' ±2%
Rt=15exp { 3480( ) }
Room temperature thermistor(RT1)
Pipe temperature thermistor(RT2)
1
273+t
0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.4k'
30: 4.3k'
40: 3.0k'
1
273
32
Page 33
DISASSEMBLY PROCEDURE12
Metal fixture
Screws
Hanger of indoor unit
Catch of installation plate
Terminal cover
Electrical box cover
Connector
Connector
Indoor controller
board
Right side panel
PK-4FLSD, PK-4FLSD1, PK-4FLSD2
OPERATING PROCEDURE PHOTOS & ILLUSTRATION
1. Removing the lower side of the indoor unit from the installation plate
(1) Remove the 2 screws.
Hang the indoor unit hangers to the catches on the installation plate.
Figure 1
2. Removing the right side panel
(1) Remove the 2 screws of the right side panel:one on the
bottom and the other on the upper right-hand side.
(2) Disconnect the connector from the adapter case.
(3) Sliding the right side panel to the right, pull it out toward
you.
3. Removing the indoor controller board
(1) Remove the right side panel.
(2) Remove the screw of the electrical box cover, and remove
the cover.
(3) Disconnect the connectors on the indoor controller board.
(4) To unhook the catches on the right-hand side of the indoor
controller board, pull the left-hand side toward you and lift
up the cover to the right. Then the indoor controller board
can be removed.
Figure 2
Photo 1
Indoor controller
board
Electrical
box cover
Catches
4. Removing the electrical box
(1) Remove the right side panel.
(2) Remove the screw of the electrical box cover, and remove
the cover.
(3) Remove the room temperature thermistor and the pipe
temperature thermistor.
(4) Disconnect the vane motor connector on the indoor
controller board.
(5) Remove the 2 screws of the electrical box.
(6) Disconnect the connector of the heater lead wire connec-
tor.
(7) Disconnect the connector of the fan motor lead wire.
(8) Remove the electrical box.
33
Photo 2
Room temperature thermistor
Pipe temperature thermistor
Screws
Electrical box
Page 34
OPERATING PROCEDURE PHOTOS & ILLUSTRATION
Catch on the left side panel
Catch on
the unit
(9) Remove the screws of the indoor controller board case,
and pull out the indoor controller board case.
Then the transformer and the capacitor and relay is
accessible.
5. Removing the vane motor
(1) Remove the right side panel.
(2) Remove the screw of the electrical parts box cover, and
remove the cover.
(3) Remove the 2 screws of the vane motor, and remove the
motor from the shaft.
(4) Disconnect the vane motor connector on the indoor con-
troller board.
Photo 3
Capacitor
Indoor controller
board case
Photo 4
Relay
Transformer
Electrical box
Screws
6. Removing the intake grille
(1) Remove the right side panel.
(2) To remove the left side panel, remove the screw on the
bottom and the screw on the upper left-hand side. (See
Figure 3.)
1. Press up this side of the left side panel to unhook the
catch on the panel from the catch on the unit.
2. Slide the left side panel to the left to remove the panel.
Note: Fix the unit to the metal fixture securely.
(3) Remove the air filters.
(4) Hold and press the centre cover.
(5) Remove the screws of the grille.
(6) Pull the lower side of the grille toward you and slide the
upper to the right to remove the grille.
7. Removing the drain pan
(1) Remove the left and right side panels.
(2) Remove the grille.
(3) Remove the electrical box cover.
(4) Loosen the drain hose band to remove.
(5) Remove the 3 screws of the drain pan, and slide the drain
pan toward you to remove drain pan.
Vane motor
Figure 3
Photo 5
Left side panel
Photo 6
Indoor controller board
Slide to the
right
Screws for grille
Drain pan
Screws
Grille
Drain hose
band
Drain hose
34
Page 35
OPERATING PROCEDURE PHOTOS
8. Removing the lineflow fan and the fan motor
(1) Remove the left and right side panels.
(2) Remove the grille.
(3) Remove the electrical box.
(4) Remove the drain pan.
(5) Loosen the screw that fixes the lineflow fan to the fan
motor. (See Photo 7. )
(6) Remove the 4 screws of the motor fixture, and remove the
fan motor and the motor fixture at a time (See Photo 8.)
(7) Remove the screws of the left and right motor supports,
and remove the motor supports and the fan motor. (See
Photo 9.)
(8) Remove the screw of the centre support, and remove the
support. (See Photo 10. )
(9) Remove the 2 screws on the left and right sides of the heat
exchanger, and pull the bearing support toward you. (See
Photo 11.)
(10) Pull the left-hand side of the heat exchanger toward you,
and remove the lineflow fan.
Photo 7
Photo 8
Lineflow fan
Screw
Fan motor
Screw
Fan motor
Motor fixture
Heat exchanger
Bearing support
Lineflow fan
Photo 9Photo 11
Screw
Motor support
Photo 10
Centre support
Fan motor
Lineflow fans
Screw
Screw
Motor
support
35
Page 36
13
No.
Part No.
Part name
Specification
Unit
Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
Price
1
2
3
4
5
6
7
8
9
10
11
12
R01 12G 661
R01 12G 662
T7W 570 317
R01 12G 691
R01 A17 500
R01 E01 811
R01 E00 811
R01 E01 812
R01 E01 641
R01 12G 523
R01 12G 808
—
—
R01 24K 658
RIGHT SIDE PANEL
LEFT SIDE PANEL
WIRELESS ADAPTER
INTAKE GRILLE
AIR FILTER
NOSE
NOSE
UNDER PLATE
TOP PLATE
DRAIN SOCKET
BACK PLATE
BOX ASSEMBLY
BOX ASSEMBLY
RECEIVER
(BG00A593GM3)
(RG00A734G61)
PK-2.5
FLD
1
PK-3
1
1
1
2
4
1
1
1
1
1
1
1
FLD
1
1
1
2
4
1
1
1
1
1
1
1
FLD2FLD1FLD
2
1
1
1
2
4
1
1
1
1
1
1
1
1
1
1
2
4
1
1
1
1
1
1
1
FLD
1
1
1
2
4
1
1
1
1
1
1
1
1
1
1
2
4
1
1
1
1
1
1
1
PARTS LIST
STRUCTURAL PARTS
PK-2.5FLD PK-3FLD
PK-2.5FLD
1 PK-3FLD1
PK-2.5FLD2 PK-3FLD2
2
7
6
11
8
10
5
Part number that is circled is not shown in the figure.
36
3
4
12
1
Page 37
STRUCTURAL PARTS
PK-4FLSD
PK-4FLSD
1
PK-4FLSD2
2
8
7
12
9
11
4
6
Part number that is circled is not shown in the figure.
No.
Part No.
1
R01 12G 661
2
R01 12G 662
3
T7W 570 317
4
R01 12G 691
5
R01 16G 692
6
R01 A17 500
R01 16G 811
7
R01 E01 811
8
R01 E00 812
9
R01 E00 641
10
R01 12G 523
11
R01 16G 808
12
13
R01 24K 658
—
—
Part name
RIGHT SIDE PANEL
LEFT SIDE PANEL
WIRELESS ADAPTER
INTAKE GRILLE
INTAKE GRILLE
AIR FILTER
NOSE
NOSE
UNDER PLATE
TOP PLATE
DRAIN SOCKET
BACK PLATE
BOX ASSEMBLY
BOX ASSEMBLY
RECEIVER
Specification
FLSD
1
1
1
2
1
5
1
1
1
1
1
1
1
Q'ty/set
PK-4
FLSD
1
1
1
2
1
5
1
1
1
1
1
1
1
FLSD2
1
3
Remarks.
(Drawing No.)
1
1
1
2
1
5
1
1
1
1
1
(BG00A593GM4)
1
(RG00A734G62)
1
13
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Unit
1
Price
Amount
37
Page 38
No.
Part No.
Part name
Specification
Unit
Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recommended
Q'ty
Q'ty/set
PK-2.5 PK-3
Price
1
2
3
4
5
6
7
8
9
FAN MOTOR
RUBBER MOUNT
MOTOR BAND
MOTOR BAND
MOTOR LEG
RIGHT LINEFLOW FAN
LEFT LINEFLOW FAN
SLEEVE BEARING
SLEEVE BEARING
(BG02H065H01)
(BG02H178H01)
(BG02A534H16)
MF
FLD
1
FLD FLD
FLD
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
FLD
2
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
FLD
2
1
2
1
1
1
1
1
1
1
R01 12G 220
R01 12G 105
—
—
—
R01 13G 115
R01 13G 114
R01 005 103
R01 12G 103
ELECTRICAL PARTS
PK-2.5FLD PK-3FLD
PK-2.5FLD
1 PK-3FLD1
PK-2.5FLD2 PK-3FLD2
8
10
37 34
35
PK-2.5FLD
PK-2.5FLD1
PK-3FLD
PK-3FLD1
36
14
19
22
13
11
16
9
6
4
2
28
27
30
7
12
17
20
18
PK-2.5FLD2
PK-3FLD2
5
1
3
31
25
26
21
15
32
2933
23
24
38
Page 39
No.
Part No.
Part name
Specification
Unit
Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Price
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
BEARING MOUNT
BEARING MOUNT
BEARING BAND
CENTER SUPPORT
CENTER SUPPORT
DRAIN PAN
DRAIN PAN
VANE MOTOR
GUIDE VANE
ARM
AUTO VANE
CENTER COVER
JOINT SHAFT
DRAIN HOSE
HEAT EXCHANGER
HEAT EXCHANGER
CONTROLLER BOARD
FUSE
CONTROLLER CASE
CONTROLLER COVER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL COVER
RUN CAPACITOR
TRANSFORMER
ROOM TEMPERATURE THERMISTOR
PIPE TEMPERATURE THERMISTOR
REMOTE CONTROLLER
REMOTE CONTROLLER
BATTERY COVER
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER DOOR
REMOTE CONTROLLER DOOR
(BG02L462H02)
(BG25A543H07)
(BG00R259G07)
(BG25J821H01)
(BG25H301H02)
(BG25B573H05)
(BG02A648G02)
(BG02J608H07)
MV
I.B
F1,2<I.B>
TB2
TB4
C
T
RT1
RT2
W.R
W.R
250V 6.3A
3P(L,N,;)
2P(1,2)
2.0+ 440V
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Q'ty/set
PK-2.5
PK-3
FLD1
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
FLD
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
FLD2 FLD1
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
FLD
1
1
1
1
1
1
20
3
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
FLD2
R01 Z61 102
R01 KV5 102
—
—
—
T7W 12G 529
T7W E13 529
R01 12G 223
—
—
R01 12G 002
R01 12G 621
R01 12G 063
R01 KV5 527
T7W 572 480
T7W 573 480
T7W 27K 310
T7W 520 239
—
—
T7W 509 716
T7W 512 716
—
R01 588 255
T7W 51J 799
R01 06A 202
R01 KL5 202
T7W 570 200
T7W E06 714
R01 58A 050
R01 18G 075
R01 E00 075
R01 58A 049
R01 E01 049
39
Page 40
No.
Part No.
Part name
Specification
Unit
Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
PK-4
Price
1
2
3
4
5
6
7
8
9
FAN MOTOR
RUBBER MOUNT
MOTOR BAND
MOTOR BAND
MOTOR LEG
RIGHT LINEFLOW FAN
LEFT LINEFLOW FAN
SLEEVE BEARING
SLEEVE BEARING
(BG02H065H01)
(BG02H178H01)
(BG02A534H17)
MF
FLSD
2FLSD1FLSD
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
T7W 571 762
R01 16G 105
—
—
—
R01 17G 115
R01 17G 114
R01 005 103
R01 12G 103
ELECTRICAL PARTS
PK-4FLSD
PK-4FLSD
1
PK-4FLSD2
10
PK-4FLSD
35
8
37 34
36
PK-4FLSD 1
14
19
22
13
11
16
9
6
4
2
28
27
30
7
12
17
20
18
PK-4FLSD 2
5
1
3
31
25
26
21
15
32
40
2933
23
24
Page 41
No.
Part No.
Part name
Specification
Q'ty/set
PK-4
FLSD
Remarks.
(Drawing No.)
2FLSD1FLSD
Wiring
Diagram
Symbol
Recommended
Q'ty
Unit
Price
Amount
R01 Z61 102
10
R01 KV5 102
11
12
13
R01 16G 529
14
R01 E14 529
R01 12G 223
15
16
17
R01 16G 002
18
R01 12G 621
19
R01 12G 063
20
R01 KV5 527
21
R01 46G 480
22
T7W 27K 310
23
T7W 520 239
24
25
26
T7W 509 716
27
T7W 512 716
28
29
R01 576 255
30
T7W 51J 799
31
R01 06A 202
32
R01 KL5 202
33
T7W 570 200
34
T7W E06 714
R01 58A 050
35
R01 18G 075
36
R01 E00 075
R01 58A 049
37
R01 E01 049
—
—
—
—
—
—
—
—
BEARING MOUNT
BEARING MOUNT
BEARING BAND
CENTER SUPPORT
CENTER SUPPORT
DRAIN PAN
DRAIN PAN
VANE MOTOR
GUIDE VANE
ARM
AUTO VANE
CENTER COVER
JOINT SHAFT
DRAIN HOSE
HEAT EXCHANGER
CONTROLLER BOARD
FUSE
CONTROLLER CASE
CONTROLLER COVER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL COVER
RUN CAPACITOR
TRANSFORMER
ROOM TEMPERATURE THERMISTOR
PIPE TEMPERATURE THERMISTOR
REMOTE CONTROLLER
REMOTE CONTROLLER
BATTERY COVER
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER DOOR
REMOTE CONTROLLER DOOR
250V 6.3A
3P(L,N,;)
2P(1,2)
3.0+ 440V
26
1
1
1
1
1
1
4
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
26
1
1
1
1
1
1
4
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
(BG02L462H02)
1
(BG25A543H07)
(BG00R259G07)
1
1
1
(BG25J821H01)
26
(BG25H301H02)
4
2
1
1
1
1
1
2
(BG25B573H05)
1
(BG02A648G02)
1
1
1
(BG02J608H07)
1
1
1
1
1
1
1
1
1
MV
I.B
F1,2<I.B>
TB2
TB4
C
T
RT1
RT2
W.R
W.R
41
Page 42
14
ORN 1
2
3
BRN
RED
1
2
3
4
5
BRN
RED
ORN
YLW
GRN
Part No.
Pipe length
Pipe size O.D.
Connection methed
PAC-05FFS-E
5m
Liquid:{9.52
Indoor unit:Flared
Gas:{15.88
Outdoor unit:Flared
PAC-07FFS-E
7m
PAC-10FFS-E
10m
PAC-15FFS-E
15m
Part No.
Pipe length
Pipe size O.D.
Connection methed
PAC-SC51PI-E
5m
Liquid:{9.52
Indoor unit:Flared
Gas:{19.05
Outdoor unit:Flared
PAC-SC52PI-E
7m
PAC-SC53PI-E
10m
PAC-SC54PZ-E
15m
OPTIONAL PARTS
1. REFRIGERANT PIPES
Service Ref. : PK-2.5FLD, PK-2.5FLD1, PK-2.5FLD2
PK-3FLD, PK-3FLD1, PK-3FLD2
Service Ref. : PK-4FLSD, PK-4FLSD1, PK-4FLSD2
Note 1. How to connect refrigerant pipes.
Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as the
connection takes no more than 5 minutes, no air will enter, and there will be no need for air purging. Remove the
blind caps and make the connections within 5 minutes. After the connections for the indoor and outdoor units are
made, open the stop valve on the outdoor unit to allow refrigerant gas to flow.
If piping length exceeds 20m,an additional charge of refrigerant is needed.
Note 2. The following main parts are contained in the optional refrigerant piping kit.
Heat insulating cover, vinyl tapes, nipples, sleeve and flange (for wall hole).
2. TIMER ADAPTER
This adapter is needed for system control and for operation via external contacts.
Part No. PAC-SA89TA-E
3. MULTIPLE REMOTE CONTROLLER ADAPTER
This adapter is needed for remote indication (operation/check).
Part No. PAC-SA88HA-E
42
Page 43
4. CENTRALIZED REMOTE CONTROLLER
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
113
113
10 9 8 7 6 5 4 3 2 1
56.3
11
23.5
8
Allows individual or combined control of up to 16 units.
Part No.
4-1 Dimensions
ENGAGED
GROUP
12345678910
GROUP
SELECTION
PROGRAM
ACTIVE BYPASS
TIMER
CONTROLLER
DUAL CENTRAL
OPERATION
4-2 Names and Functions
BACK
ACTIVE
BYPASS
DUAL
CENTRAL
MITSUBISHI ELECTRIC
117
POWER
ON/OFF
AHEAD
PAC-805RC
Unit : mm
12
117
POWER ON/OFF switch
"ENGAGED" indicator
Operation ON/OFF switch.
When this indicator is lit, transmission is in
progress and all switches are inoperative.
▲BACK ▼AHEAD buttons
These buttons are used to designate
DUAL/CENTRAL switch
This change-over switch governs the operation of the accessory remote controller.
"DUAL"
Instructions from both the accessory
remote controller and the centralized
remote controller are valid. (Priority given
to the last instruction received.)
ENGAGED
GROUP
12345678910
ACTIVE BYPASS
DUAL CENTRAL
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
BACK
ACTIVE
BYPASS
DUAL
CENTRAL
POWER
ON/OFF
AHEAD
the attached unit(s). (They designate
the unit to be centrally controlled.)
●When group “00” is designated; collective ON/OFF instruction is sent to all
units.
●When group “01”-“16“ is designated;
ON/OFF instruction is sent only to the
designated units.
"CENTRAL"
ON/OFF switching by the accessory
remote controller is invalidated. Operation
is controlled by the centralized remote controller only.
Initial setting is "DUAL".
MITSUBISHI ELECTRIC
ACTIVE/BYPASS switch
This is a change-over switch for the
program timer.
Use “BYPASS” when a program timer
is not connected.
LCD Matrix Display
This display indicates the operational status of all connected units either by steady
lighting or by flashing.
Independent “DUAL / CENTRAL” and “ACTIVE / BYPASS” setting of all the groups is possible. When the power supply to the
centralized remote controller is cut due to power failure, all settings will return to original “DUAL” and “BYPASS”.
43
Page 44
LNE
T
(Y)
(W) (R) (O)
(BR)
5A
L
POWER
SUPPLY
N
E
Fuse(5A)
Tie-wrap
Wiring has to be changed when
a 200,230 or 240V power is used.
Tie-wrap
TRANSFORMER
Transmission
TERMINAL-BLOCK
FOR TRANSMISSION
TERMINAL-BLOCK
OF POWER SUPPLY
200
220
230
240
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
10 9 8 7 6 5 4 3 2 1
To adaptor's
terminal-block
Centralized remote
controller
Non-polar,
two-wire cable
To adaptor's
terminal-block
Power supply board box
BACK
ACTIVE
BYPASS
POWER
ON/OFF
DUAL
CENTRAL
AHEAD
ENGAGED
GROUP
ACTIVE BYPASS
GROUP
SELECTION
PROGRAM
TIMER
CONTROLLER
OPERATION
DUAL CENTRAL
12345678910
10 9 8 7 6 5 4 3 2 1
Dip switch
SW17
Centralized
remote controller
Power supply
board
4-3 Connection method
(1) Connections in the power supply cord.
1. Connect the power supply cord to the power supply terminal-block and fix it in-place with a tie-wrap. Connect a single phase 200V AC (220, 230, 240V) to .
E
As is the GND terminal, be sure to ground the earth wire.
2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-wrap. Use a Ω1.6
(AWG 14) or above two-wire cable for the transmission line.
CAUTION : Never connect the power supply cord to the transmission terminal-block.
L N
(2) Connection method of centralized remote controller and power supply board.
1. Connect the centralized remote controller and power supply board with a non-polar, two-wire cable.
2. Wiring diagram
3. Be sure to set the maximum address number with the
dip switch SW17 on the centralized remote controller.
44
Page 45
5. PROGRAM TIMER ADAPTER
Length : 2m(6' 7")
Length : 2m(6' 7")
Length : 2m(6' 7")
This adapter is needed when a program timer(PAC-SK65PT)or a centralized remote controller(PAC-805RC)is used.
Part No
5-1 Parts included
PAC-825AD
1 ADAPTER··························1P 2 3-core cable ···························1P
3 3-core cable ···························1P
Length : 2m(6' 7")
4 4-core cable ···························1P
5 5-core cable ···························1P
5-2 Connection method
Connection and wiring methods differ with the type of the indoor unit used. Confirm the type before carrying
out the work.
(1) Connections in the adapter box
1. Connect the power supply cord to the terminal-block and fix it in-place with a tie-wrap.
Connect a single phase 200V AC (220, 230, 240V) to .
E
As is the GND terminal, be sure to ground the earth wire.
L N
2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-wrap (when a
centralized remote controller is being used).
CAUTION : Never connect the power supply cord to the transmission terminal-block
Fig.1 Fig.2
TERMINAL-BLOCK
FOR
TRANSMISSION
Tie-wrap
Transmission cord
CN22
Dip switch
TRANS
CN1 CN21 CN51CN30CN42 CN50 CN40
Fuse(5A)
TRANSFORMER
(AG)
SW1
LNE
POWER SUPPLY CORD
TERMINAL-BLOCK
FOR POWER
SUPPLY
Tie-wrap
CN22
TRANS
(B)
(W)
Transmission
Wiring has to be changed when 200V power supply is used.
200
SW1
T
(Y)
240
220
5A
L
N
E
POWER
SUPPLY
45
Page 46
Fig.3
To program timer or
centralized remote controller
Adaptor
200 240V AC
CN30
CN2 CN51
CN50
Indoor unit
Max. Length of each cable is 10m.
3-core cable ¡ 5-core cable ƒ
(2) Set the address number (from SW1-1 to
Fig.4
65
230
22
15
15
86 70
35
27
15
hole
40 80 4027 18
Fixing screw hole
4- 5.5
95
220
22
35
120
12
30
200
2 2- 2.9
74
7
8
SW1-6) in the dip switch when a centralized
remote controller is being used.
The address is the control number of each
unit in the centralized control system.
As the address serves as a time-delay
device as well, sequential starts (all units are
triggered collectively by one single ON
instruction) must be set with different address
numbers (greater than O) for each adapter.
SW1
10 9 8 7 6 5 4 3 2 1
ON
Levers No. 1-6 can set the following address respectively with
binary notations
Toggle
No.6ON32No.5ON16No.4ON8No.3ON4No.2ON2No.1ON
Address
1
(Ex. 1) 3=2+1
10 9 8 7 6 5 4 3 2 1
(3) Connection from adaptor
5-3 Dimensions
(Ex. 2) 9=8+1
10 9 8 7 6 5 4 3 2 1
ON
ON
(Ex. 3) 15=8+4+2+1
10 9 8 7 6 5 4 3 2 1
ON
46
Page 47
28˚C
26
˚C
8:00
Normal
operation
23:00
Setback
operation
8:00
Normal
operation
6. TIMER
Model Name
Product Name
(The PAC-SK65PT can only be used together with the PAC-825AD)
6-1 Program timer specifications
Product name
Model name.
Mounting method
Clock system
Clock accuracy
Display
Program cycle
Timer setting unit
Number. of set point
Time
Week
Program Timer
PAC-SK65PT
Wall mount
Quarts clock
+
Liquid crystal display
Liquid crystal display
24 hours
30 minutes
48/day
Minimum ON/OFF interval
Power failure safeguard
Rated power supply
Set back function
5V DC
Not provided
6-2 Feature of program timer
(1) Daily timer function
Daily timer can be set in 30 minutes units for up to 24 hours.
Each unit can be set for unit ON, unit OFF, or setback operation.
(2) Setback operation (PAC-SK65PT)
Set back operation is useful for reducing running costs
e.g. At a hotel with a 24-hour system
8:00~23:00 Cooling operation with set temperature at 26°C
23:00~8:00 Setback operation with 2 degrees of setback
As shown in the chart on the night, the set temperature rises 2 degrees
automatically during the setback operation. When the setback operation
ends, normal operation will begin.
(3) Weekly timer function
Daily timer function can apply to each day of the week.
PAC-SK65PT
Program timer
50 second/month
—
—
6-3 How to connect program timer (PAC-SK65PT)
(1) Install the program timer next to the remote controller the same way as the remote controller is installed.
(2) Connect the program timer and the remote controller with a 6-wire cable as shown in the figure below
2-wire cable
Centraized
Remote
controller
Connector CN1 Connector CN1
To indoor unit
6-wire cable
Program
timer
NOTE:While the program timer is connected to the remote controller, the 24hour
ON/OFF timer on the remote controller will not work.
47
Page 48
SET/MOTOR
BACK AHEAD
BACK
AHEAD
ON OFF
ON SETBACK OFF
SMTWTF S
MITSUBISHI ELECTRIC
SET MONITOR
TODAY
CLOCK
WEEKLY
TIMER
DAILY TIMER
Mode display
Current time
display
Current day
display
Weekly timer
display
Day timer display
NOTE : Display above is
only an example.
6-4 Name and functions
(PAC-SK65PT)
MODE selector button : Used to select \MONITOR" or "SET" mode.
"MONITOR" : Indicates the current timer setting. All buttons except
SET/MONITOR will not work.This is the normal status.
"SET" : "SET" is used to set the time, change the day of the week, and
program the daily and weekly timer.
Clock adjustment button : Used to adjust the current time.Press
AHEAD button to advance the time.
Each time the button is pressed the time
advances by 1 minute. Pressing continuously advances 1 minute in a 0.5 second interval. When the lower digit of
minute becomes 0 the indication
advances in 10 minutes unit. BACK
button is used for reversing the time.
Each time the button is pressed the time
reverses by 1 minute. Pressing continuously reverses the time by 1 minute in a
0.5 second interval.
When the lower digit of minute becomes
0 the indication reverses in 10 minutes
unit.
Weekday setting button : Used to set the day of week.
Pressing button changes the day.
▲
7. Drain pump
Model Name PAC-SE89DM-E
Weekly timer button : Used to set the weekly timer.
Daily timer button : Used to set the timer settings in units of 30 minutes.
HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN
© Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD.
Distributed in Sep. 2001. No.OC232 REVISED EDITION-A 980
Issued in Aug. 2000. No. OC232 1050
Made in Japan
New publication, effective Sep. 2001
Specifications subject to change without notice
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