Mitsubishi Electric | PK24 | Specifications | Mitsubishi Electric PK24 Specifications

Mitsubishi Electric PK24 Specifications
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PK12FK3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
CONTENTS
1. TECHNICAL CHANGE ···················································································OC274- 2
2. FEATURES ·····································································································OC274- 3
3. PART NAMES AND FUNCTIONS··································································OC274- 6
4. SPECIFICATIONS ··························································································OC274- 8
5. DATA···············································································································OC274- 9
6. OUTLINES AND DIMENSIONS ·····································································OC274-17
7. REFRIGERANT SYSTEM DIAGRAM ····························································OC274-20
8. WIRING DIAGRAM·························································································OC274-21
9. OPERATION FLOW-CHART··········································································OC274-23
10.MICROPROCESSOR CONTROL····································································OC274-26
11. TROUBLESHOOTING ····················································································OC274-38
12. SYSTEM CONTROL·······················································································OC274-44
13. DISASSEMBLY PROCEDURE·······································································OC274-49
14. PARTS LIST····································································································OC274-52
15. OPTIONAL PARTS ·························································································OC274-58
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1
TECHNICAL CHANGE
PK12FK1
PK18FK2
PK24FK2
PK30FK2
PK36FK2
➔ PK12FK3
➔ PK18FK3
➔ PK24FK3
➔ PK30FK3
➔ PK36FK3
● INDOOR CONTROLLER BOARD has changed.
1) From TRANSFORMER to POWER BOARD.
2) From JUMPER CONNECTOR(J1) to DIP SWITCH(SW1).
3) From JUMPER CONNECTOR(J5) to DIP SWITCH(SW5).
4) The number of switches of SW7 changed from 4 to 3 pieces.
5) SW8 for option and SW9 for model selector are added.
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2
FEATURES
SWING
TIMER OFF TIMER CLOCK AUTO AUTO
CHECK SET TEMP.
FAN
START STOP SPEED
FILTER
AUTO
RETURN
CHECK MODE
TEST RUN
Indoor unit
Remote controller
Models
Cooling capacity
PK12FK3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
12,500
18,500
24,000
30,000
34,200
Btu/h
Btu/h
Btu/h
Btu/h
Btu/h
SEER
11.5
11.3
10.6
10.7
10.2
1. COMPACT DESIGN
The PK series models have been downsized and now require such minimal wall space that they can even be installed
above windows. For the PK12FK3, 11-13/16in of wall space between the ceiling and the window allows “above window”
installation. (13-3/8in for the PK24/30/36FK3)
2. AUTO FLAP SHUTTER
With a simple flick of the OFF switch the air outlet will be closed off with a shutter. The shutter also functions as a flap
during operation to adjust the air flow angle, with “Auto Angle 1” securing a comfortable air flow.
3. INSTALLATION : FAST AND ENDLESSLY ADAPTABLE
(1) Multi-directional piping
Multi directional drain and refrigerant piping radically improves flexibility in selecting installation layouts.
PK12FK3 drain piping can be installed in 5 directions, while PK18/24/30/36FK3 models boast refrigerant piping in 4
directions and drain piping 2 directions.
(2) Back plate installation guide
The back plate installation guide gives clear instructions on installation positions. The enlarged back plate secures the
unit firmly to the wall, while the support piece which lifts the unit makes left side piping work much easier.
(3) Easily removable filter
The presence of thumbscrews on the filters means that the filters can be quickly and smoothly removed.
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4. ADVANCED MICROPROCESSOR
(1) Easy to Use Microprocessor
1) Ultra-Thin Remote Controller
The streamlined, wide controller is designed to
blend with any kind of interior and the adoption of
a sophisticated microprocessor allows you to
carry out a wide range of operations easily.
2) Attractive Liquid Crystal Display (LCD)
Units operation mode, set temperature, room temperature, timer setting, fan speed,
and air flow direction are displayed on the
remote controller with the easily understood visual
Liquid Crystal Display (LCD).
[Remote controller]
SWING
F
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
TEST RUN
REMOTE CONTROLLER
3) Convenient 24-Hour ON-OFF Timer
The timer allows Mr.SLIM to be switched on or
off automatically at the time is shown on the LCD.
4) Self-Diagnostic Feature Indicates Instantly
In the rare case when a problem occurs, the unit stops operating and the set temperature indicator changes to the
self-diagnostic indicator, indicating the location of the fault.
If the check switch is pressed twice, the unit stops operating and the check mode is initiated. The cause of the most
recent problem stored in the memory is displayed on the LCD. This is extremely useful for maintenance purposes.
5) Useful Memory Feature for Storing Instructions
The previous set value is memorised so that constant temperature control can be obtained. This is convenient when,
for example, a power failure occurs.
(2) Non-polar Two-Wire Remote Controller Cables
The non-polar, two-wire type remote controller cable is slim, installation is simple and trouble-free. Remote controller
wire can be extended up to 550 yards.
5. REDI-CHARGED REFRIGERANT SYSTEM
PRE-CHARGE REFRIGERANT REQUIRED FOR LINE LENGTH OF 100ft AT
SHIPMENT. PREVENTING TROUBLES DUE TO SHORTAGE OF REFRIGERANT.
The unique refrigerant circuit and a large accumulator always controls the refrigerant to its optimum condition regardless of
the length of 164ft maximum. The additional refrigerant charging work at the field which often caused uncertain problems
heretofore is completely eliminated. This unique system serves to improve the quality of work and reliability, and also helps
to speed up the installation work.
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6. HIGH RELIABILITY AND EASY SERVICING
In addition to the self-diagnostic function, units are also equipped with a 3-minute time delay mechanism (cooling), an auto
restart function, an emergency operation function, a test run switch, etc., to assure high reliability and easy servicing.
7. FOUR-WAY PIPING ACCESS MAKES
INSTALLATION LAYOUT EASY
Piping on the outdoor unit may be connected from either of
four directions: front, rear, side or beneath the base.
This easy-access design makes it possible to install a
number of units in a compact arrangement at a single site.
The outdoor unit allows for unheard-of flexibility in
determining a piping layout, thus greatly simplifying
installation.
8. FRONT-ACCESS FACILITATES
MAINTENANCE
The outdoor unit has been designed with a front access
service panel that allows easy access to all maintenance
point, regardless of the installation layout. What’s more, this
front panel may be removed by loosening only two screws.
It all adds up to greatly simplified maintenance work.
9. NITROGEN GAS IS CHARGED TO
INDOOR UNIT
Indoor unit and refrigerant pipes are charged with nitrogen
gas (N2) instead of R-22 before shipment from the
factory.
OC274-5
Rear
Front
Base
Right
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3
PART NAMES AND FUNCTIONS
Remote controller
Settings remain in effect until changed.
Air conditioner can be operated by simply pushing ON/OFF button once settings have been made.
Remote controller operation buttons
CLOCK/TIMER button
TIMER ON/OFF button
This switches between continuous
operation and the timer operation.
This sets or switches the current
time,start time and stop time.
FAN SPEED button
OPERATION MODE
button
This sets the ventilation fan speed.
ON/OFF button
Press this button to switch the cooling,electronic dry (Dehumidify), fan
modes.
This switches between the operation and stop modes each time it is
press. The lamp on this button
lights during operation.
SWING
F
AIR DISCHARGE
button
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
SET TEMPERATURE
button
This sets the room temperature.
The temperature setting can be performed in 2˚F units.
Setting range :
Cooling 65˚F to 87˚F
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
TEST RUN
REMOTE CONTROLLER
FILTER button
This resets the filter service indication display.
AIR SWEEP button
CHECK-TEST RUN button
This switches the horizontal fan
motion ON and OFF.
Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.
(This button is not available)
This adjusts the vertical angle of the
ventilation.
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Remote controller display
CENTRALLY
CONTROLLED display
This indicates when the unit is controlled by optional features such as
central control type remote controller.
In this display example on the bottom left, a condition where all display lamps light is shown for
explanation purposes although this differs from
actual operation.
CLOCK display
The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button. The start time or stop time is
always displayed during the timer
operation.
AIR DISCHARGE display
This displays the air direction.
TIMER
display
FAN SPEED display
This indicates when the continuous
operation and time operation modes
are set.
It also display the time for the timer
operation at the same time as when
it is set.
The selected fan speed is displayed.
display
SWING
OPERATION MODE display
F
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
AUTO
RETURN
This indicates the operation mode.
MODE
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
The temperature of the return air is
displayed during operation. The display range is 47° to 97°F. The display flashes 47°F when the actual
temperature is less than 47° and
flashes 97°F when the actual temperature is greater than 97°F.
CHECK
TEST RUN
REMOTE CONTROLLER
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.
CHECK MODE
TEST RUN
CHECK
display
This indicates when a malfunction
has occurred in the unit which should
be checked.
display
This display lights in the check mode
or when a test operation is performed.
display
display
FILTER
This displays the selected setting
temperature.
This lamp lights when electricity is
supplied to the unit.
display
This lamp lights when the filter needs
to be cleaned.
Caution
● Only the
display lights when the unit is stopped and power supplied to the unit.
● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a malfunction.
● When the central control remote control unit, which is sold separately, is used the ON-OFF button,OPERATION MODE button and SET
TEMP button do not operate.
● “NOT AVAILABLE” is displayed when the AIR SWEEP button are pressed.
(AIR SWEEP function is not provided for PK series.)
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4
SPECIFICATIONS
MODELS : PK12FK3, PK18FK3, PK24FK3, PK30FK3, PK36FK3
Model
PK12FK3
PK18FK3
12,500
1.21
10.3
11.5
PK12FK3
18,500
1.75
10.6
11.3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
Item
Btu/h
❈1
Capacity
kW
❈1
Power consumption
❈1
EER
SEER
INDOOR UNIT MODEL
External finish
V, Phase, Hz
Power supply
A
Max. fuse size (time delay)
A
Min ampacity
F.L.A.
Fan motor
CFM
Dry
Airflow Hi-Lo
CFM
Wet
Pints/h
Moisture removal
dB
Sound level Hi-Lo
in.
Cond. drain connection OD
in.
W
in.
D
Dimensions
in.
H
Ib.
Weight
OUTDOOR UNIT MODEL
External finish
V, Phase, Hz
Power supply
A
Max. fuse size (time delay)
A
Min. ampacity
F.L.A
Fan motor
Model
R.L.A
Compressor
L.R.A
A(W)
Crankcase heater
Refrigerant control
dB
Sound level
in.
W
in.
D
Dimensions
in.
H
Ib.
Weight
REMOTE CONTROLLER
Control voltage (by built-in transformer)
REFRIGERANT PIPING
in.
Liquid
Pipe size
in.
Gas
Indoors
Connection method
Outdoors
ft
Height
Between the indoor
fr
Piping length
& outdoor units
30,000
24,000
34,200
3.06
2.34
3.47
9.8
10.3
9.9
10.7
10.6
10.2
PK30FK3
PK24FK3
PK36FK3
Munsell 3.4Y7.7/0.8
115, 1, 60
15
15
15
15
15
1
2
1
1
2
0.7
1.0
0.7
0.7
1.0
490-350
990-780
710-530
710-530
990-780
440-320
890-700
640-480
640-480
890-700
3.8
9.6
5.3
7.2
10.5
45-38
49-44
48-41
48-41
49-44
1
1
1
1
1
49-7/32
55-1/8
66-5/32
7-7/8
9-1/4
11-13/16
13-3/8
37
62
53
53
62
PU12EK1
PU30EK1
PU18EK1
PU24EK1
PU36EK1
Munsell 5Y7/1
208/230, 1, 60
20
15
20
30
30
16
11
16
20
22
0.65+0.65
0.65
0.75
0.65+0.65
0.75+0.75
NH33NBD
RH167NAB
RH247NAB
NH41NAD
NH47NAD
11.5
8.9
12.0
14.0
17.5
54
29
37
73
87
0.16/0.17 (33/39)
0.11/0.12 (23/28)
0.11/0.12 (23/28)
0.16/0.17 (33/39)
0.16/0.17 (33/39)
Capillary tube
55
50
53
55
55
34-1/4
38-3/16
11-5/8
13-9/16
25-9/16
33-1/2
49-9/16
207
220
105
154
208
With indoor unit
Indoor unit - remote controller : DC12V, Indoor unit - outdoor unit : DC12V
Not supplied (optional parts)
3/8
1/2
5/8
3/4
Flared
Flared
130
164
130
164
NOTES : ❈ 1.Rating conditions —indoor : DB 80˚F, WB 67˚F outdoor : DB 95˚F, WB 75˚F.
Operating range
Cooling
*
Maximum
Minimum
Indoor intake air temperature
Outdoor intake air temperature
DB 95˚F, WB 71˚F
DB 67˚F, WB 57˚F
DB 115˚F
DB 0˚F *
In case of the wind baffle is installed.
(In case of the wind baffle is not installed, the minimum temperature will be DB 23˚F.)
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5
DATA
1. PERFORMANCE DATA
1) COOLING CAPACITY
Indoor air
Outdoor intake air DB temperature(˚F)
Airflow
Models
75
(˚F)
B.F
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
9.5
1.14
13.5
9.1
1.24
12.8
8.7
1.35
12.2
8.3
1.45
13.1
10.6
1.12
12.5
10.1
1.21
11.9
9.6
1.31
11.3
9.2
1.40
63
12.7
12.0
1.01
12.2
11.5
1.09
11.6
10.9
1.18
11.1
10.5
1.27
10.5
9.9
1.36
DB75˚F(50%RH)
62.5
12.6
10.7
1.01
12.1
10.3
1.09
11.5
9.8
1.17
11.0
9.3
1.26
10.4
8.8
1.35
DB72˚F(50%RH)
60
12.0
10.4
0.99
11.5
10.0
1.07
11.0
9.5
1.15
10.4
9.0
1.24
9.9
8.6
1.32
DB70˚F(50%RH)
59
11.8
10.1
0.99
11.3
9.7
1.06
10.8
9.2
1.15
10.2
8.7
1.23
9.7
8.3
1.31
71
21.5
14.8
1.52
20.8
14.3
1.65
19.9
13.7
1.80
19.0
13.0
1.95
18.1
12.4
2.10
67
20.1
16.5
1.49
19.3
15.8
1.61
18.5
15.2
1.75
17.6
14.4
1.89
16.7
13.7
2.03
63
18.8
17.9
1.46
18.0
17.2
1.57
17.2
16.4
1.70
16.4
15.6
1.83
15.5
14.8
1.96
DB75˚F(50%RH)
62.5
18.6
16.0
1.45
17.9
15.4
1.57
17.1
14.7
1.70
16.2
13.9
1.83
15.4
13.2
1.96
DB72˚F(50%RH)
60
17.8
15.6
1.43
17.1
15.0
1.55
16.3
14.3
1.67
15.5
13.6
1.79
14.6
12.8
1.92
DB70˚F(50%RH)
59
17.4
15.0
1.43
16.7
14.4
1.54
16.0
13.8
1.66
15.1
13.1
1.78
14.3
12.4
1.90
71
27.9
16.4
2.04
26.9
15.8
2.21
25.8
15.1
2.40
24.6
14.4
2.61
23.4
13.7
2.81
67
26.1
18.8
1.99
25.1
18.1
2.16
24.0
17.3
2.34
22.9
16.5
2.53
21.7
15.6
2.71
63
24.3
20.7
1.95
23.4
20.0
2.11
22.4
19.1
2.28
21.3
18.2
2.45
20.1
17.2
2.62
DB75˚F(50%RH)
62.5
24.1
18.3
1.94
23.2
17.6
2.10
22.2
16.8
2.27
21.1
16.0
2.44
19.9
15.1
2.62
DB72˚F(50%RH)
60
23.0
17.8
1.92
22.1
17.1
2.07
21.1
16.4
2.23
20.0
15.5
2.40
18.9
14.7
2.56
DB70˚F(50%RH)
59
22.6
17.3
1.91
21.7
16.6
2.05
20.7
15.8
2.22
19.6
15.0
2.38
18.5
14.1
2.54
71
34.9
21.5
2.66
33.7
20.8
2.89
32.3
19.9
3.14
30.8
19.0
3.41
29.3
18.1
3.68
67
32.6
24.5
2.61
31.4
23.6
2.82
30.0
22.5
3.06
28.6
21.5
3.30
27.1
20.3
3.54
63
30.4
26.9
2.55
29.2
25.8
2.75
27.9
24.6
2.98
26.6
23.5
3.21
25.1
22.2
3.43
DB75˚F(50%RH)
62.5
30.2
23.8
2.54
29.0
22.9
2.75
27.7
21.9
2.97
26.3
20.7
3.20
24.9
19.6
3.42
DB72˚F(50%RH)
60
28.8
23.2
2.51
27.7
22.3
2.70
26.4
21.3
2.92
25.1
20.2
3.14
23.7
19.1
3.35
DB70˚F(50%RH)
59
28.3
22.5
2.49
27.1
21.5
2.69
25.9
20.6
2.90
24.6
19.5
3.11
23.2
18.4
3.32
71
39.8
23.0
3.02
38.4
22.1
3.28
36.8
21.2
3.57
35.1
20.2
3.87
33.4
19.3
4.17
67
37.1
26.3
2.96
35.7
25.3
3.20
34.2
24.3
3.47
32.6
23.1
3.74
30.9
21.9
4.02
63
34.7
29.3
2.89
33.3
28.1
3.12
31.9
26.9
3.38
30.3
25.6
3.64
28.7
24.2
3.89
DB75˚F(50%RH)
62.5
34.4
25.8
2.88
33.1
24.8
3.11
31.6
23.7
3.37
30.0
22.5
3.63
28.4
21.3
3.88
DB72˚F(50%RH)
60
32.8
25.1
2.84
31.5
24.1
3.07
30.1
23.0
3.31
28.6
21.9
3.56
27.0
20.7
3.80
DB70˚F(50%RH)
59
32.2
24.3
2.83
30.9
23.3
3.05
29.5
22.3
3.29
28.0
21.1
3.53
26.4
19.9
3.77
990
0.15
TPC
14.0
DB 80˚F
PK36FK3
SHC
1.03
990
0.15
TC
1.05
DB 80˚F
PK30FK3
TPC
9.8
710
0.14
SHC
11.0
DB 80˚F
PK24FK3
TC
13.6
710
0.14
115
14.5
DB 80˚F
PK18FK3
105
67
490
0.18
95
71
DB 80˚F
PK12FK3
85
IWB
(CFM)
Notes 1. B.F. : Bypass Factor, IWB : Intake air wet-bulb temperature
TC : Total Capacity (x103 Btu/h), SHC : Sensible Heat Capacity (x103 Btu/h)
TPC : Total Power Consumption (kW)
2. Cooling capacity correction factors and Refrigerant piping length (one way) range.
2) COOLING CAPACITY CORRECTIONS
Refrigerant piping length (one way)
MODEL
25ft
40ft
55ft
70ft
85ft
100ft
115ft
130ft
150ft
164ft
PK12FK3
1.0
0.992
0.983
0.978
0.966
0.959
0.950
0.945
—
—
PK18FK3
1.0
0.992
0.983
0.978
0.966
0.959
0.950
0.945
—
—
PK24FK3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
PK30FK3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
PK36FK3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
OC274-9
OC274--1.qxp 1.12.14 5:30 PM Page 10
2. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
PK12FK3 COOLING CAPACITY
12
71
67
63
indoor intake air WB temperature (°F)
6
1.6
71
67
63
indoor intake air WB temperature (°F)
1.2
1.0
0.8
023 3235
45
55
65(67) 75
85
95
105
24
indoor intake air WB temperature (°F)
12
3.0
2.5
71
67
63
2.0
1.5
1.0
023 3235
115
71
67
63
18
indoor intake air WB temperature (°F)
45
55
65(67) 75
85
95
105
115
Outdoor intake air DB temperature (°F)
Outdoor intake air DB temperature (°F)
PK24FK3 COOLING CAPACITY
PK30FK3 COOLING CAPACITY
SHF=0.72
SHF=0.72
42
indoor intake air WB temperature (°F)
30
24
71
67
63
18
3.5
71
3.0
67
63
2.5
2.0
indoor intake air WB temperature (°F)
1.5
0 23 32 35 45 55 65 (67) 75 85 95
105 115
Total power consumption (kW) Total capacity (✕103Btu/h)
36
Total power consumption (kW) Total capacity (✕103Btu/h)
SHF=0.82
30
Total power consumption (kW) Total capacity (✕103Btu/h)
Total power consumption (kW) Total capacity (✕103Btu/h)
18
1.4
PK18FK3 COOLING CAPACITY
SHF=0.81
indoor intake air WB temperature (°F)
36
30
71
67
63
24
4.0
71
67
63
3.5
3.0
2.5
indoor intake air WB temperature (°F)
2.0
0 23 32 35 45 55 65 (67) 75 85 95
Outdoor intake air DB temperature (°F)
Outdoor intake air DB temperature (°F)
OC274-10
105 115
OC274--1.qxp 1.12.14 5:30 PM Page 11
PK36FK3 COOLING CAPACITY
SHF=0.71
Total power consumption (kW) Total capacity (✕103Btu/h)
42
36
71
67
30
indoor intake air WB temperature (°F)
63
indoor intake air WB temperature (°F)
71
67
63
24
4.5
4.0
3.5
3.0
2.5
023 3235
45
55
65(67) 75
85
95
105
115
Outdoor intake air DB temperature (°F)
Data is based on the condition under indoor humidity 50%.
Air flow should be set at HI.
A point on the curve shows the reference point.
<Coling mode>
PK12FK3
86
80
75
70
[psi. G]
indoor intake air WB temperature (°F)
100
90
Suction pressure
Condensing pressure
[psi. G] PK12FK3
350
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190
180
170
indoor intake air WB temperature (°F)
160
150
30 40 50 60 70 80 90 100 110
DB(°F)
Outdoor ambient temperature (°F)
OC274-11
80
70
60
50
40
30
30
40
50
60
70
80
90
100 110
DB(°F)
Outdoor ambient temperature (°F)
86
80
75
70
OC274--1.qxp 1.12.14 5:30 PM Page 12
Condensing pressure
<Coling mode>
PK24FK3
[psi.G]
350
340
330
320
310
300
290
280
270
260
250
240
230
220
210 Indoor DB temperature (°F)
200
190
180
170
160
150
30
40
50 60 70
80 90
Outdoor ambient temperature
PK18FK3
86
80
75
70
[psi.G]
100
86
80
75
70
90
Indoor DB temperature (°F)
80
Suction pressure
<Coling mode>
PK18FK3
[psi.G]
360
350
340
330
320
310
300
290
280
270
260
250
240
230 Indoor DB temperature (°F)
220
210
200
190
180
170
160
30
40
50 60 70
80 90
Outdoor ambient temperature
70
60
50
40
30
20
100 110
DB(°F)
30
40
50 60 70
80 90
Outdoor ambient temperature
100 110
DB(°F)
PK24FK3
86
80
75
70
[psi.G]
100
90
Suction pressure
Condensing pressure
Data is based on the condition under indoor humidity 50%.
Air flow should be set at HI.
A point on the curve shows the reference point.
80
Indoor DB temperature (°F)
70
86
80
75
70
60
50
40
30
100 110
DB(°F)
20
30
OC274-12
40
50 60 70
80 90
Outdoor ambient temperature
100 110
DB(°F)
OC274--1.qxp 1.12.14 5:30 PM Page 13
Data is based on the condition under indoor humidity 50%.
Air flow should be set at HI.
A point on the curve shows the reference point.
<Coling mode>
PK30FK3
86
80
75
70
[psi.G]
100
90
Suction pressure
Condensing pressure
[psi. G] PK30FK3
340
330
320
310
300
290
indoor intake air WB temperature (°F)
280
270
260
250
240
230
220
210
200
190
180
170
160
150
140
30 40 50 60 70 80 90 100 110
DB(°F)
Outdoor ambient temperature (°F)
indoor intake air WB temperature (°F)
80
86
80
75
70
70
60
50
40
30
30
40
50
60
70
80
90
100 110
DB(°F)
Outdoor ambient temperature (°F)
<Coling mode>
PK36FK3
86
80
75
70
[psi. G]
indoor intake air WB temperature (°F)
90
80
Suction pressure
Condensing pressure
[psi. G] PK36FK3
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190
180
170
160
indoor intake air WB temperature (°F)
150
140
30 40 50 60 70 80 90 100 110
DB(°F)
Outdoor ambient temperature (°F)
OC274-13
70
60
50
40
30
20
30
40
50
60
70
80
90
100 110
DB(°F)
Outdoor ambient temperature (°F)
86
80
75
70
OC274--1.qxp 1.12.14 5:30 PM Page 14
3. STANDARD OPERATION DATA
Model
PK12FK3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
Unit
Cooling
Cooling
Cooling
Cooling
Cooling
Btu / t
12,500
18,500
24,000
30,000
34,200
SHF
—
0.81
0.82
0.72
0.75
0.71
Input
kW
1.21
1.75
2.34
3.06
3.47
INDOOR UNIT MODEL
PK12FK3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
Power supply (V, phase, Hz)
115, 1, 60
115, 1, 60
115, 1, 60
115, 1, 60
115, 1, 60
kW
0.07
0.09
0.09
0.12
0.12
A
0.7
0.7
0.7
1.0
1.0
PU12EK
PU18EK1
PU24EK1
PU30EK1
PU36EK1
Item
Total
Capacity
Electrical circuit
Input
Fan current
OUTDOOR UNIT MODEL
Power supply (V, phase, Hz)
Refrigerant circuit
Input
208/230, 1, 60 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60 208/230, 1, 60
kW
1.14
1.66
2.25
2.94
3.35
Comp. current
A
8.9
12.0
11.5
14.0
17.5
Fan current
A
0.65
0.75
0.65+0.65
0.65+0.65
0.75+0.75
Condensing pressure
psi-G
247
255
240
247
247
Suction pressure
psi-G
87
82
74
77
73
Discharge temp.
˚F
155
171
155
163
163
Condensing temp.
˚F
116
118
114
116
116
Suction temp.
˚F
52
51
44
46
43
Ref. pipe length
ft
25
25
25
25
25
Refrigerant charge
—
4 lbs 14oz
5 lbs 8 oz
9 lbs 15 oz
10 lbs 2 oz
10 lbs 9 oz
DB
˚F
80
80
80
80
80
WB
˚F
67
67
67
67
67
DB
˚F
61
61
58
59
58
WB
˚F
59
59
56
58
56
Fan speed (High)
rpm
1,420
1,300
1,300
1,380
1,380
Airflow (High)
CFM
490
710
710
990
990
DB
˚F
95
95
95
95
95
WB
˚F
75
75
75
75
75
Fan speed upper / lower
rpm
790
790
Airflow
CFM
1,590
1,590
Outdoor side
Indoor side
Intake air temperature
Discharge air temperature
Intake air temperature
OC274-14
750
750
3,170
750
750
3,170
760
760
3,350
OC274--1.qxp 1.12.14 5:30 PM Page 15
4. OPERATING RANGE
1) POWER SUPPLY
Rating
Allowable voltage
Indoor unit
115V 1 phase 60Hz
Min. 103V — Max. 127V
Outdoor unit
208/230V 1 phase 60Hz
Min. 198V — Max. 253V
2) OPERATION
Intake air temperature
Outdoor
Indoor
Function
DB (˚F)
WB (˚F)
DB (˚F)
WB (˚F)
Standard temperature
80
67
95
75
Maximum temperature
95
71
115
75
Minimum temperature
67
57
0
—
Maximum humidity
80
75
80
75
Condition
Cooling
5. OUTLET AIR SPEED AND COVERAGE RANGE
Standard
Airflow
height
Air speed
(8.2ft)
Coverage range
PK12FK3
PK18FK3
PK24FK3
PK30FK3
PK36FK3
(CFM)
490
710
710
990
990
(ft / sec.)
14.1
16.1
16.1
17.7
17.7
32
41
41
50
50
(ft)
● The air coverage range is the value up to the position where the air speed is 0.8ft/sec. when air is blown out
horizontally from the unit at the High fan setting.
The coverage range should be used only as a general guideline since it varies according to the size of the
room and furniture installed inside the room.
6. ADDITIONAL REFRIGERANT CHARGE (R22 (oz))
Outdoor unit
precharged
(up to 100ft)
25ft
40ft
55ft
70ft
85ft
100ft
115ft
130ft
150ft
164ft
PK12FK3
4 lbs 14 oz
0
0
0
0
0
0
2
4
—
—
PK18FK3
5 lbs 8 oz
0
0
0
0
0
0
2
4
—
—
PK24FK3
9 lbs 15 oz
0
0
0
0
0
0
2
4
7
9
PK30FK3
10 lbs 2 oz
0
0
0
0
0
0
5
10
16
20
PK36FK3
10 lbs 9 oz
0
0
0
0
0
0
5
10
16
20
Model
Refrigerant piping length (over way)
OC274-15
OC274--1.qxp 1.12.14 5:30 PM Page 16
6. NOISE CRITERION CURVES
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
NC-20
125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
PK30FK3
PK36FK3
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
LINE
NOTCH SPL(dB)
Hi
49
Lo
44
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
NOTCH SPL(dB)
Hi
45
Lo
38
PK12FK3
NOTCH SPL(dB)
Hi
48
Lo
41
PK18FK3
PK24FK3
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
NC-20
125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
LINE
90
Unit
80
Wall
3.3ft
70
NC-70
3.3ft
60
NC-60
50
NC-50
Ambient temperature 80˚F
Test conditions are based on JIS Z8731
40
NC-40
30
NC-30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
LINE
NC-20
125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OC274-16
0
15-15/16
19-11/32
18-3/4
17-23/32
11-13/16
(Hight of unit)
R2-1/16
unit center
2-unit hangers
Through
hole
3-1/2~{4
68-{3/16
hole for
13
tapping 2O5-{1/8
hole for
screw
1-25/32
tapping
screw Knock out hole for left-rear piping
10-29/32
2-3/32
12-23/32
Details of installation plate
W2 This size shows the lower
end of through hole.
W1 Sleeves are available
on the market.
Sleeve
W1
{3-1/2
10-7/8
6 or more
2-3/8
(Necessary clearance for
Unit installation)
2-3/8
14-3/4
49-7/32 (Width of unit)
17-19/32
7-15/32
5-29/32
6-27/32
2 or more
9-1/32
(100 for left-hand
side piping)
Right side
8-13/16
Service space required
around indoor unit
Front
7-1/16
5-29/32
8-15/32
Knock out hole
for left-hand
side piping
10-21/32
Gas pipe
-
R2
12-17/32
Drain hose
15/16
0
1-3/16
or more
7-1/8
or more
14-23/32
15-15/16
Liquid pipe
2-3/4
6
(7)
11-13/16
2
Drain hose
43-5/16(Drain hose)
27
25
Terminal block & pipe position
Lower side
2
Terminal block for
control
21-25/32
knock out hole
for piping
Air outlet
Terminal block
for power supply
18-27/32
16-louvers
(manual)
38-7/16
Lower side
19-11/16
Air outlet
1
Air intake
Air intake
17-11/16
Auto vanes
1-7/8
3-1/8
service panel for power supply connection
Air intake
Drain hose(Flexible hose;length 47-1/4)
Rear piping hole
1 Liquid pipe 3/8F
5/8F
2 Gas pipe
W2
6-31/32
8-15/16
9-9/32
11-1/4
5-1/8
0
1-3/8
2-3/32
3-5/32
13-{9/16 hole
2-tapping screws
for installation plate
5-1/8 or less
18-27/32
17-11/16
Front
1
Terminal block
7-7/8
7-1/2
6-3/4
Bolt
Knock-out hole for
right-hand side piping
Knock out hole
for right-hand side piping
19/32 or less
Installation bolt
position
Right side
(2:1)
knock out hole
for piping
2-3/4
25/32
5/16
Knock out hole
for under piping
Knock out hole
for piping
2-3/8
5/16
(2:1)
7-7/8
Right side
Air intake
Terminal block for
remote controller
8-3/4
5-5/8
6-13/16
8-25/32
9-9/32
8-15/16
6-5/8
49-7/32
Indoor Unit
PK12FK3
1/
1
1
1-3/8
17-23/32
18-3/4
19-1/8
1-27/32
2-3/4
3-5/32
2-3/4
2-7/8
2-9/16
1/2
2-3/8
2-3/4
Left side
24-19/32
3-19/32
8-3/8
5/16
5/16
OC274-17
11/32
25/32
6
Pipe position
Left side
OC274--1.qxp 1.12.14 5:30 PM Page 17
OUTLINES AND DIMENSIONS
OC274-18
Wall fixture
1-17/32
32-{15/32
hole for bolt
B
8-27/32
23/32
3-27/32
1-15/32
2-29/32
A
1-3/16
Knock out hole for piping
66-{1/4 hole for
tapping screw
3-15/16
5/32 1-17/32
1-15/32
2-9/16
7-3/32
12-{1/4 Hole for
tapping screw
9-7/16
on left-hand side
12-3/8
2-3/8
42-15/16
2-15/32
Air outlet
Liquid pipe
1/2
Refrigerant pipe. Drain pipe
9-1/4
Right side
Terminal block for control
7-3/4
9-7/16
B
Liquid pipe
Gas pipe
2-5/32
4-23/32 (Gas pipe)
7-7/32 (Liquid pipe)
Change vane (manual)
Under panel
Removable at left-hand
side piping
Knock out hole for under-piping
44-3/32
21-23/32
Auto vane
Lower side
Drain hose
Air intake
55-1/8
Front
9-1/4
1-25/32
9-1/4
1-25/32
43-11/16
9-1/4
1-25/32
21-23/32 Air outlet
9-1/4
3-17/32 Rear piping opening
3-19/32
Range for left rear piping opening
11-1/32
24
on right-hand side
11-7/32
3/4
17-29/32
10x3-19/32=(35-13/16)
35-7/16
Drainage range
23/32 Drainage range
Drain hose for 31/32
left-hand side piping
Knock out hole for
left piping
9-21/32
Unit center
1-15/32
1-17/32
5/32 3-15/16
38-31/32
2-9/16
2-29/32
C
1-3/16
A
Left side
13-3/8
13/32
1-3/16
1-5/32
1-3/18 7-1/4
1-3/16
3-5/32
11-1/32
Terminal block for power supply
Gas pipe
Terminal block for remote controller
4-1/32
4-3/8
Drain hose
Bolt
19/32
C
Knock out hole for right piping
Refrigerant pipe. Drain pipe
PK18FK3
PK24FK3
1-21/32
2-9/32
Top
OC274--1.qxp 1.12.14 5:30 PM Page 18
1-17/32
1-15/32
3-27/32
41- 15/32 hole
for bolt
1-15/32
9-7/16
50
A
Range for left rear piping hole
7-3/32
11-7/32
3/4
9-21/32
Drainage range on
right-hand side
Drain hose for
left-hand side piping
31/32
Knock out hole
for left piping
Left side
5-/15/16 or less
1-3/16
or more
Rear piping hole
11-1/32
12-3/8
29-17/32
3-19/32
23-7/16
13x3-19/32=(7-3/16)
35-7/16
Unit center
2-9/16
2-29/32
C
1-3/16
Range for left
rear piping hole
8-27/32
23/32 23/32
Wall fixture
Unit out line
11-5/8
B
Knock out hole for wiring
Drainage range on
Left hand side
2-29/32
A
1-3/16
84-{1/4 hole
for tapping
screw
3-15/16
5/32 1-17/32
10 or more
2-9/16
2 or more
1-15/32
Air
outlet
5/32 3-15/16
10 or more
1-17/32
12- 1/4 hole
for tapping screw
7-17/32
9-1/4
1-25/32
9-1/4
1
Knock out hole for under-piping
Refrigerant pipe .Drain pipe
Auto vanes
Under panel (Removable at
left-hand piping)
louvers(manual)
Lower side
55-1/8
27-5/16 Air outlet
43-11/16 (Drain hose)
Drain hose
7-7/32
1-25/32
Terminal block for remote controller
Terminal block for control
Terminal block for power supply
66-5/32
53-15/16 Air Intake
Front
9-1/4
1-25/32
9-1/4
1-25/32
27-5/16 Air outlet
9-1/4
Top
2
Knock out hole
for right piping
9-7/16
B
Liquid pipe
Gas pipe
4-3/8
4-1/32
Bolt
C
1/2F
3/4F
3-1/2~
4
>
< 1 Sleeves are available
on the market.
3-1/2
Sleeve >< 1 Through hole
1
2
9-1/4
Right side
19/32
or less
7-3/4
2-5/32(Gas pipe)
4-23/32(Liquid pipe)
2-9/32
Air
intake
13-3/8
1-3/16
OC274-19
7-1/4
13/32
1-3/16
1-3/16
3-5/32
1-5/32
11-1/32
PK30FK3
PK36FK3
2-3/8
2-15/32
1/2
1-21/32
Front
OC274--1.qxp 1.12.14 5:30 PM Page 19
OC274--1.qxp 1.12.14 5:30 PM Page 20
Unit : inch
Remote controller
3/32
5-1/8
23/32
SWING
TIMER OFF TIMER CLOCK AUTO AUTO
CHECK SET TEMP.
FAN
START STOP SPEED
FILTER
AUTO
RETURN
CHECK MODE
4-3/4
TEST RUN
3/4
7
REFRIGERANT SYSTEM DIAGRAM
PK12FK3
PK18FK3
PK24FK3
Refrigerant pipe
(option)
{5/8"
(with heat insulator)
Flared connection
Refrigerant flow
COOLING
Strainer
Pipe temperature
thermistor / Liquid
(RT2)
Refrigerant pipe
(option)
{3/8"
(with heat insulator)
Flared connection
Distributor
PK30FK3
PK36FK3
Refrigerant pipe
(option)
{3/4"
(with heat insulator)
Flared connection
Strainer
Pipe temperature
thermistor / Liquid
(RT2)
Refrigerant pipe
(option)
{1/2"
(with heat insulator)
Flared connection
Distributor
OC274-20
OC274--1.qxp 1.12.14 5:30 PM Page 21
8
WIRING DIAGRAM
MODEL PK12FK3 WIRING DIAGRAM
TB2
(DC13.1V)
(AC115V)
CNSK(RED) CN2S (WHT)
TRANS
LS
3
2
1
RED
WHT
MF
P.B
RED
BLU
GRN/YLW
POWER SUPPLY
~(1PHASE)
AC115V 60Hz
L1
N
GR
GROUND
2
1
MV
FAN
(WHT)
135
13
CNV
VANE
(GRN)
SW3
ON
OFF
SW2
12
SW8
SW5
ON
OFF
(RED) CN2D CN23
VANE
F1
(WHT) (GRN)
X1
SW1
CENTRALLY REMOCON
CONTROL POWER
CN51
CN40
(WHT)
SW9
ON
OFF
12345
SW6 SW7
ON
OFF
12 345 6 1 2345 678910
SW18
2
1
OFF
ON
LED1 LED2 WIRELESS
CN90
ZNR
(WHT)
X1
ON
OFF
123 456 123 4
POWER
(WHT)
F2
X4
R.B
POWER
1 3 CNDK 1 3 CND 1 2
X4
FC
BLK
WHT
I.B
RED
BLU
RED
WHT
BLK
BLK
WHT
C
1234
1 23
DRAIN
CN31
(WHT)
123
PIPE
CN21
(WHT)
12
4
3
2
1
REMOCON
CN22
(BLU)
INTAKE
OUT
CN20 LOSSNAY DOOR 3
CN2L CN30 2
(RED)
(BLU) 1
12
TB5
B02
CN1
87654321
SW17
54321
87654321
321
CN2
OFF
ON
2
1
A01
TB6
BLU
BLU
2
1
ORN
YLW
2 TB4 TRANSMISSION WIRES DC12V 2
1
1
TRANSMISSION WIRES DC12V
TB3
OUTDOOR UNIT
[LEGEND]
SYMBOL
P.B
I.B
CN2L
CN51
FC
SW1
SW2
SW3
SW5
SW6
SW7
SW8
SW9
X1
X4
F1,F2
ZNR
LED1
LED2
RT2 RT1
NAME
INDOOR POWER BOARD
INDOOR CONTROLLER BOARD
CONNECTOR(LOSSNAY)
CONNECTOR(CENTRALLY CONTROL)
FAN PHASE CONTROL
SWITCH(FUNCTION SELECTOR)
SWITCH(ADDRESS SELECTOR)
SWITCH(EMERGENCY OPERATION)
SWITCH(MODEL SELECTOR)
SWITCH(TWIN/TRIPLE SELECTOR)
SWITCH(MODEL SELECTOR)
SWITCH(OPTION)
SWITCH(MODEL SELECTOR)
RELAY(VANE MOTOR)
RELAY(FAN MOTOR)
FUSE(6A/250V)
VARISTOR
LED(DC12V POWER)
LED(DC5V POWER)
SYMBOL
C
MF
MV
LS
TB2~TB6
RT1
NAME
CAPACITOR(FAN MOTOR)
FAN MOTOR
VANE MOTOR
LIMIT SWITCH
TERMINAL BLOCK
ROOM TEMP.THERMISTOR
(32°F/15k",77°F/5.4k" DETECT)
RT2
PIPE TEMP.THERMISTOR/LIQUID
(32°F/15k",77°F/5.4k" DETECT)
R.B
REMOTE CONTROLLER BOARD
CN1 CONNECTOR(PROGRAM TIMER)
CN2 CONNECTOR(REMOTE SWITCH)
SW17 SWITCH(ADDRESS SELECTOR)
SW18 SWITCH(FUNCTION SELECTOR)
NOTES:
1.Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
2.Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
3.Symbols used in wiring diagram above are,
:Connector, :Terminal block.
4.Emergency operation
If remote controller or microcomputer fails but there is no other trouble, emergency operation is possible by setting dip
switch(SW3<I.B>) on the indoor controller board.
[Check items]
(1)Make sure that no other trouble exist the outdoor unit.Trouble with the outdoor unit prevents emergency operation.
(If any trouble exists the outdoor unit error code"P8"will be displayed on the remote controller and the trouble position will
be shown on the outdoor controller board LED. See electric wiring diagram of the outdoor unit for details.)
(2)Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous run with the power ON/OFF(ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1)Set the dip switch(SW3<I.B>)on the indoor controller board to 1 on and 2 off for cooling.
(2)Turn on outdoor unit side circuit breaker,then indoor unit side circuit breaker.
(3)During emergency operation indoor fan runs at high speed but auto-vane does not work.
(4)Thermostat will not function.
(5)Emergency cooling should be limited to 10 hours maximum (the indoor unit heat exchanger may freeze).
(6)After every emergency operation,set all dip switches(SW3<I.B>) to OFF.
(7)Movement of the vanes does not work in emergency operation,therefore you have to slowly set them manually to the
appropriate position.
OC274-21
OC274--1.qxp 1.12.14 5:30 PM Page 22
MODELS PK18/24/30/36FK3 WIRING DIAGRAM
(DC13.1V)
(AC115V)
CNSK(RED) CN2S (WHT)
TRANS
MF
MV
3
2
1
6
6
13
135
POWER
CNDK 1
(WHT)
F2
X4
FC
SW3
ON
OFF
12
SW8
SW5
ON
OFF
MODELS
ON
OFF
12345
SW6 SW7
SW1
SW7
ON
OFF
12 345 6 1 2345 678910
18FK3
ON
OFF
24FK3
ON
OFF
123
R.B
POWER
CND 1 2 VANE
(RED) CN2D CN6V
F1
(WHT) (WHT)
30FK3
ON
OFF
123
SW18
OFF
ON
1234
1 23
DRAIN
CN31
(WHT)
123
PIPE
CN21
(WHT)
12
4
3
2
1
REMOCON
CN22
(BLU)
INTAKE
OUT
CN20 LOSSNAY DOOR 3
CN2L CN30 2
(RED)
(BLU)
1
12
BLU
BLU
2
1
ORN
YLW
2
1
B02
CN1
87654321
SW17
54321
87654321
321
CN2
OFF
ON
2
1
A01
TB6
TB5 TRANSMISSION WIRES DC12V
TB4
TRANSMISSION WIRES DC12V 2
1
TB3
OUTDOOR UNIT
36FK3
ON
OFF
123
[LEGEND]
SYMBOL
P.B
I.B
CN2L
CN51
FC
SW1
SW2
SW3
SW5
SW6
SW7
SW8
SW9
X4
F1,F2
ZNR
LED1
LED2
CENTRALLY REMOCON
CONTROL POWER
CN51
CN40
(WHT)
SW9
ON
OFF
123 456 123 4
3
LED1 LED2 WIRELESS
CN90
ZNR
(WHT)
X4
SW2
BLK
WHT
RED
BLU
BLK
WHT
RED
WHT
BLK
FAN
(WHT)
P.B
POWER SUPPLY
~(1PHASE)
AC115V 60Hz
L1
N
GR
GROUND
2
1
C
I.B
TB2
RED
BLU
GRN/YLW
123
RT2 RT1
NAME
INDOOR POWER BOARD
INDOOR CONTROLLER BOARD
CONNECTOR(LOSSNAY)
CONNECTOR(CENTRALLY CONTROL)
FAN PHASE CONTROL
SWITCH(FUNCTION SELECTOR)
SWITCH(ADDRESS SELECTOR)
SWITCH(EMERGENCY OPERATION)
SWITCH(MODEL SELECTOR)
SWITCH(TWIN/TRIPLE SELECTOR)
SWITCH(MODEL SELECTOR)
SWITCH(OPTION)
SWITCH(MODEL SELECTOR)
RELAY(FAN MOTOR)
FUSE(6A/250V)
VARISTOR
LED(DC12V POWER)
LED(DC5V POWER)
SYMBOL
C
MF
MV
TB2~TB6
RT1
NAME
CAPACITOR(FAN MOTOR)
FAN MOTOR
VANE MOTOR
TERMINAL BLOCK
ROOM TEMP.THERMISTOR
(32°F/15k",77°F/5.4k" DETECT)
RT2
PIPE TEMP.THERMISTOR/LIQUID
(32°F/15k",77°F/5.4k" DETECT)
R.B
REMOTE CONTROLLER BOARD
CN1 CONNECTOR(PROGRAM TIMER)
CN2 CONNECTOR(REMOTE SWITCH)
SW17 SWITCH(ADDRESS SELECTOR)
SW18 SWITCH(FUNCTION SELECTOR)
NOTES:
1.Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.
2.Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.
3.Symbols used in wiring diagram above are,
:Connector, :Terminal block.
4.Emergency operation
If remote controller or microcomputer fails but there is no other trouble, emergency operation is possible by setting
dip switch(SW3<I.B>) on the indoor controller board.
[Check items]
(1)Make sure that no other trouble exist the outdoor unit.Trouble with the outdoor unit prevents emergency operation.
(If any trouble exists the outdoor unit error code"P8"will be displayed on the remote controller and the trouble position
will be shown on the outdoor controller board LED. See electric wiring diagram of the outdoor unit for details.)
(2)Make sure that there is no trouble with the indoor fan.
Emergency operation will be continuous run with the power ON/OFF(ON/OFF with the remote controller is not possible).
[Emergency operation procedure]
(1)Set the dip switch(SW3<I.B>)on the indoor controller board to 1 on and 2 off for cooling.
(2)Turn on outdoor unit side circuit breaker,then indoor unit side circuit breaker.
(3)During emergency operation indoor fan runs at high speed but auto-vane does not work.
(4)Thermostat will not function.
(5)Emergency cooling should be limited to 10 hours maximum (the indoor unit heat exchanger may freeze).
(6)After every emergency operation,set all dip switches(SW3<I.B>) to OFF.
(7)Movement of the vanes does not work in emergency operation,therefore you have to slowly set them manually to the
appropriate position.
OC274-22
OC274--1.qxp 1.12.14 5:30 PM Page 23
9
OPERATION FLOW-CHART
MAIN OPERATION
START
Power circuit
breaker
1
NO
YES
YES
Check SW
ON twice
NO
Operation SW
ON
w 1
YES
NO
“OFF” timer
YES
NO
NO
Set time
complete
“ON” timer
YES
YES
Set time
complete
NO
YES
w 2
NO
Trouble
NO
YES
STOP
Trouble STOP
PROTECTION DEVICE
SELF HOLD RELEASE
PROTECTION DEVICE
SELF HOLD
w 3
Remote controller
trouble display
Remote controller
indicator lamp OFF
Remote controller
operation display
Operating mode
(COOL)
NO
Operating mode
(DRY)
YES
COOL operation
YES
DRY operation
w 5
FAN operation
Indoor side
Fan STOP
Outdoor side
w 4
Compressor OFF
Fan STOP
w1 In addition, the centralised control and remote control can be operated.
w2 The modes which indicate the sources of trouble are listed below.
● EO-Signal transmitting/receiving error
● P1-Room temperature thermistor malfunction
● P2-Indoor coil thermistor malfunction
● P4-Drain sensor malfunction
● P5-Drain overflow
● P6-Coil frost/overheat protection
● P7-System error
● P8-Outdoor unit trouble
w3 The CHECK switch will show if an error has occurred in the past.
w4 The 3-minute time-delay functions after compressor stops.
w5 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)
OC274-23
OC274--1.qxp 1.12.14 5:30 PM Page 24
COOLING OPERATION
NO
COOL operation
Initial
COOLING
YES
w8
Vane initial
setting
Vane
55 deg downward angle
70 deg downward angle
NO
YES
Fan speed
LOW
NO
YES
NO
Vane setting notch
Downward discharge
1 hour
YES
Vane horizontal
airflow
w9
Compressor
YES
thermostat
ON
NO
Allowance
cancel
NOYES
3-minute
time delay
NO
6-minute
time delay
YES
Allowance
period
NO
6 minute
time delay
NO
3-minute
compressor operation
NO
w 10
YES
Coil frost protection
Allowance set
YES
Coil frost
protection
YES
NO
w 11
NO
Cooling area
NO
YES
10-minute
compressor operation
NO
Indoor coil
temperature is
50˚F or higher
YES
YES
Allowance cancel
YES
Coil frost
prevention
NO
NO
Defrosting protection
detection temperature
30˚F or lower
NO
6-minute
time delay
YES
Indoor pipe
temperature is
34˚F or lower
NO
1 min continue
YES
FAN speed
LOW
FAN speed
LOW 5 min
elapse
NO
YES
16-minute
compressor operation
NO
3-minute
time delay
YES
Outdoor unit
trouble
YES
Coil frost
prevention
Compressor ON
Coil frost
prevention release
Compressor OFF
1
w8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. If operation changes
during auto vane SWING, the auto vane will continue to swing.
w9 When operating TEST RUN, the thermostat will be continuously ON.
w10After 3 minute compressor operation, if the indoor coil thermistor reads 5°F or below for 3 minutes, the compressor will
stop for 6 minutes.
w11Heating area : Indoor coil temperature is more than 9 degrees above the room temperature.
Cooling area : Indoor coil temperature is more than 9 degrees below the room temperature.
FAN area : Indoor coil temperature is within 9 degrees either way of the room temperature.
OC274-24
OC274--1.qxp 1.12.14 5:30 PM Page 25
DRY OPERATION
DRY
operation
NO
Initial dry
operation
w8
YES
Vane
setting notch
Vane initial setting
YES
w12
Room temperature is
64°F or lower
NO
NO
During
compressor ON
YES
3-minute
compressor
operation
NO
NO
YES
NO
YES
3-minute
time delay
w9
Compressor &
thermostat ON
YES
Compressor &
thermostat
ON
w9
NO
YES
NO
Compressor ON
time completes
10-minute
compressor
OFF
NO
YES
YES
w13
10-minute compressor
OFF timer start
Compressor ON
time set
Compressor OFF
Compressor ON
w14
Fan STOP
w14
Fan speed LOW
1
w8—9 Refer to page OC274-24.
w12
When room temperature is 64°F or below, the compressor cannot operate.
When room temperature rises over 64°F the compressor starts after a 3-minute time delay.
w13
Compressor ON time is decided by room temperature. Refer to page OC274-32.
w14
In dry operation, compressor ON makes the fan speed LOW. Also, when the compressor OFF and the pipe temperature
is 79°F or less, the fan stops, or when the compressor OFF and the pipe temperature is below 43°F the fan speed
changes to LOW mode.
It is not possible to set the fan speed with the remote controller
OC274-25
OC274--1.qxp 1.12.14 5:30 PM Page 26
10
MICROPROCESSOR CONTROL
1. OUTLINE OF MICROPROCESSOR CONTROL
INPUT to remote controller
● OFF-ON switching.
● COOL/DRY-FAN selector switching.
● Thermostat setting.
● TIMER mode selector-switching and Timer
setting.
● HIGH-LOW fan speed switching.
● AUTO Vane selector (AIR DISCHARGE)
switching.
● TEST RUN switching.
● CHECK mode switching.
(Self diagnostic trouble shooting)
● Processes and transmits
orders.
OUTPUT to remote controller
Remote controller
● LCD indicator
SWING
TIMER OFF TIMER CLOCK AUTO AUTO
CHECK SET TEMP.
FAN
STRAT STOP SPEED
FILTER
AUTO
RETURN
CHECK MODE
TEST RUN
Non-polar, two-wire cable
maximum length 550 yards
12VDC
Indoor
unit
Remote controller board
Signal
Indoor controller board
INPUT from indoor unit
● Room temperature thermistor (RT1)
● Pipe temperature thermistor (RT2)
OUTPUT to indoor unit
● 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.
w Emergency operation.
w Set by dip switch on indoor controller board.
● Transmits the power to remote controller.
Polar two-wire cable
● Compressor protection
device working
● Fan speed control.
● Crankcase heater control
ON-OFF.
● Self diagnostic function
Outdoor unit
12VDC
Independent Control of
Outdoor Unit
1
2
OC274-26
OUTPUT to outdoor unit
1 2
● Auto vane's angle setting.
● Emergency stop.
● Compressor and
outdoor fan : ONOFF
OC274--1.qxp 1.12.14 5:30 PM Page 27
2. INDOOR UNIT CONTROL
2-1 COOL operation
SWING
<How to operate>
1 Press the ON/OFF button.
2 Press MODE button to set operation mode to Cool.
3 To set desired temperature, press SET TEMP.button.
NOTE : Set temperature changes by 2˚F in the range 65~87˚F, each
time SET TEMP. button is pressed.
F
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
TEST RUN
REMOTE CONTROLLER
<COOL operation time chart>
Operation starts by
ON/OFF button
ON.
The room temperature
displayed on Remote
controller becomes equal
to set temperature.
The room temperature
displayed on Remote Operation stops by
controller rises above O N / O F F b u t t o n
OFF.
set temperature.
ON
Thermostat
OFF
LOW or HIGH
ON
Indoor fan
LOW or HIGH
OFF
Initially 10°(Changeable by remote controller setting)
CLOSE
Auto vane
CLOSE
ON
Compressor
OFF
Minimum 3 minutes W1
w1 Even if the room temperature displayed on remote controller rises above the set temperature during this period, the compressor will not
start until this period has ended.
OC274-27
OC274--1.qxp 1.12.14 5:30 PM Page 28
(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 room temperature is higher than set temperature.
The compressor stops when room temperature is equal to or lower than the set temperature.
The compressor maintains the previous state when the room temperature minus the set temperature is 0 degrees or more,
or lower than 2 degrees.
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 indoor coil thermistor (RT2) reads 34°F or below after the
compressor has been continuously operated for at least 16 minutes or more. When the indoor coil temperature rises to
50°F or above, the compressor will start in a 3-minute(w2) time delay.
w2 When the indoor coil temperature is 30°F or less, the compressor starts in 6 minutes.
NOTE : By turning OFF the dip switch SW1-3 on indoor controller board, the start temperature of coil frost prevention changes
from 34°F to 36°F.
5 Coil frost protection
When indoor coil temperature becomes 5°F 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 indoor coil temperature has been 5°F
or below for 3 minutes,the coil frost protection will start.
<Coil frost protection>
Compressor stops for 6 minutes,and then restarts.
lf the start condition is satisfied again during the first 10 minutes of compressor operation,both the indoor and outdoor units
stop,displaying a check code of“P6”on the remote controller.
<Termination conditions>
Coil frost protection is released when the start condition is not satisfied again during the allowance, or when the COOL
mode stops or changes to 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.
When the outdoor unit abnormality detection is released and the fan speed returns to the set speed, the quiet cycle control
will work.
(a) Normal control
( i ) Fan speed depends on the remote controller setting regardless of the thermostat on/off.
(ii) Fan speed will remain on low if an abnormality in outdoor unit is detected. (5 minutes)
5 minutes
SET
5 minutes
SET
low
low
OFF
NOTE 1 : Fan stops immediately if the unit stops or the check mode is started.
OC274-28
1 Start-up of outdoor unit abnormality detection.
2 Release of outdoor unit abnormality detection.
3 Unit stop due to outdoor unit abnormality
with P8 indication.
OC274--1.qxp 1.12.14 5:30 PM Page 29
(3) Auto vane control
Auto vane position is set to 10 degrees airflow at the start-up of COOL operation. It can then be changed by the remote
controller.
(a) Vane position set mode & swing mode.
(!) Every time AIR DISCHARGE button is pressed, setting will be change.
(@) Airflow direction can be changed with AIR DISCHARGED button.
1 Fan speed : LOW
10°
60°
70°
SWING
PK12FK3 does not provide
SWING function.
2 Fan speed : HIGH
10°
30°
60°
70°
SWING
PK12FK3 does not provide
SWING function.
<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.
After that, 60° or 70° is available by setting with the remote controller, and it continues for 1 hour.
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.
If the discharge direction changes from 60° (or 70°) to the horizontal discharge, the 1-hour timer to return the horizontal
discharge is cancelled.
<Remote controller display>
1 10°
2 30° downward
3 60° downward
4 70° downward
5 SWING
PK12FK3 does not provide
SWING function.
Changes by pressing the AIR DISCHARGE button.
OC274-29
OC274--1.qxp 1.12.14 5:30 PM Page 30
(4) Detecting abnormalities in the outdoor unit
After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperature
and 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 stops and check code “P8” appears on remote
controller.
RANGE A : Pipe temperature is more than 9 degrees above room temperature.
RANGE B : Pipe temperature is within 9 degrees either way of room temperature.
RANGE C : Pipe temperature is more than 9 degrees below room temperature.
Pipe temperature
minus room temperature
(degree)
+9
0
-9
RANGE A
RANGE B
RANGE C
OC274-30
OC274--2.qxp 1.12.14 5:32 PM Page 31
2-2 DRY operation
SWING
<How to operate>
1 Press POWER ON/OFF button.
2 Press the MODE button to display “DRY”
3 Press the SET TEMP. button to set the desired temperature.
NOTE: The set temperature changes 2°F when the SET TEMP.
button is pressed one time.
Dry 65 to 87°F
F
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
TEST RUN
REMOTE CONTROLLER
<DRY operation time chart>
Operation starts by
POWER button
ON.
Room temperature
becomes equal to
set temperature.
Room temperature
rises above set
temperature.
Operation stops by
POWER button
OFF.
ON
Thermostat
OFF
DRY MODE
DRY MODE
ON
Indoor fan
OFF
ON
Auto vane
OFF
ON
Compressor
OFF
Minimum 3 minutes w1
w1 Even if the room temperature rises above the set temperature during this period, the compressor will not start until this period has
ended.
OC274-31
OC274--2.qxp 1.12.14 5:32 PM Page 32
(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 room temperature is higher than set temperature.
The compressor stops when room temperature is equal to or lower than the set temperature.
The compressor maintains the previous state when the room temperature minus the set temperature is 0°F or more, or
lower than 2°F.
3 The compressor stops in check mode or during protective functions.
4 The compressor will not start when the room temperature is 64°F or below.
The compressor starts intermittent operation when the power is turned ON with room temperature above 64°F. The compressor ON/OFF time depends on the thermostat ON/OFF and the following room temperatures.After 3-minute compressor
operation,
● If the room temperature thermistor reads above 82°F with thermostat ON, the compressor will operate for 6 more minutes
and then stop for 3 minutes.
● If the room temperature thermistor reads 79°F to 82°F with thermostat ON, the compressor will operate for 4 more minutes and then stop for 3 minutes.
● If the room temperature thermistor reads 75°F to 79°F with thermostat ON, the compressor will operate for 2 more minutes and then stop for 3 minutes.
● If the room temperature thermistor reads below 75°F 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.
5Coil frost protection
Coil frost protection in DRY operation is the same as in COOL operation.(Refer to “ 2-1 COOL operation”.)
6Coil frost prevention
Coil frost prevention does not operate in DRY operation.
(2) Indoor fan control
The indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote controller. Also, the fan runs on LOW speed when the pipe temperature is 43°F or more, or the compressor is OFF and the
pipe temperature is below 43°F.
(a)During compressor OFF
● When the indoor coil temperature is 43°F or above, the indoor fan will stop.
● When the indoor coil temperature is below 43°F, the indoor fan will run on LOW speed.
(b)During compressor ON
● The indoor fan runs on LOW speed.
<Dry mode>
The fan notch is controlled by the indoor coil temperature every 30 seconds.
Fan control in DRY operation.
Pipe temp.
Fan
43°F or more
STOP
Below 43°F
LOW
All
LOW
Compressor OFF
Compressor ON
(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.
OC274-32
OC274--2.qxp 1.12.14 5:32 PM Page 33
2-3 Auto vane control
<How to operate>
To change the air flow direction, press AIR DISCHARGE button.
SWING
F
DRY COOL TIMER OFF TIMER CLOCK AUTO AUTO
FAN
CHECK SET TEMP.
START STOP FAN
SPEED
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
1
2
3
4
5
10˚
30˚
60˚
70˚
SWING
W1
TEST RUN
REMOTE CONTROLLER
W1. PK12FK3 does not provide SWING function
<Remote controller display>
1 10°
2 30° downward
Available in COOL operation with fan speed on HIGH.
Unavailable in DRY operation.
If fan speed changes from LOW to HIGH during 30°
downward discharge in COOL mode, the direction automatically changes to 10°.
3 60° downward
4 70° downward
PK12FK3 does not provide SWING function.
5 SWING
Changes by pressing the AIR DISCHARGE button.
(1) COOL/DRY operation
At the start-up of COOL or DRY operation, the discharge direction in automatically set to 10°. After, it can be changed to
another direction with AIR DISCHARGE button on the remote controller.
<Auto return>
When 60° or 70° discharge is set with fan speed on LOW, “AUTO RETURN” appears below the room temperature display.
One hour later the direction changes to 10° automatically and “AUTO RETURN” disappears.
OC274-33
OC274--2.qxp 1.12.14 5:32 PM Page 34
2-4 TIMER operation
WIRED REMOTE CONTROLLER
2
1
1
1 ON
2
1.2 OFF
<Timer function>
AUTO STOP ·········The air conditioner stops after the set time lapses.
AUTO START ········The air conditioner starts after the set time lapses.
AUTO OFF ············Timer is not active.
<How to operate>
1. Press POWER ON/OFF button.
2. Press “TIMER ON/OFF” button to select AUTO STOP or AUTO
START.
3. Press “CLOCK/TIMER” button to set desired time.
Time setting is in 1 hour units for up to 24 hours.
Each time TIMER SET button is pressed, set time increases by 1
hour. When TIMER SET button is pressed and held, the set time
increases by 1 hour every 0.5 seconds.
4. To cancel the timer operation, press POWER ON/OFF button.
<Timer setting example>
AUTO
STOP
This setting will stop the operation in 8hours.
With the lapse of time, time display changes in 1hour units,
showing remaining time.
2-5Test run
<Before test run>
● After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or
control wiring, and mistaken polarity.
● Use a 500-volt measure to check the resistance between the power supply terminal block and ground to make sure that it is
at least 1.0MΩ.
Attention:
Do not use the air conditioner if resistance is less than 1.0MΩ.
SWING
F
COOL
FAN
SPEED
MODE
AUTO
RETURN
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP
SET TEMP.
TIMER SET
CHECK
TEST RUN
REMOTE CONTROLLER
<How to operate>
1. Turn ON main breaker.
2. Press TEST RUN button twice. “TEST RUN” is displayed on
remote controller.
3. Select “COOL” with MODE button to check that cool air is being
discharge.
4.Select LOW/HIGH with FAN SPEED button to check that the fan
speed changes properly.
5. Press AIR DISCHARGE button to check auto vane operation.
6. Check outdoor fan operation.
7. Check compressor operation referring to the indoor coil
temperature code displayed on the remote controller.
8. After checking, press the ON/OFF button.
TEST RUN button
Displayed during test run
·The test run works for 2 hours and stops automatically.
To cancel the test run, press ON / OFF button or TIMER ON / OFF button.
OC274-34
OC274--2.qxp 1.12.14 5:32 PM Page 35
(1) Indoor coil temperature code
During the test run, the indoor coil temperature code from 1 to 15 is displayed on the remote controller instead of room
temperature. The code should fall with the lapse of time in normal COOL operation.
Code
1
Indoor coil temperature ~34(36)°F
2
3
4
5
6
7
8
36(37)°F~50°F
~59°F
~68°F
~77°F
~86°F
~95°F
~104°F
Code
9
10
11
12
13
14
15
Indoor coil temperature
~113°F
~122°F
~131°F
~140°F
~158°F
~191°F
Thermistor abnormality
(2) Trouble during test run
● If the unit malfunctions during the test run, refer to section 10 in this manual entitled “TROUBLESHOOTING.”
● When the optional program timer is connected to the conditioner, refer to its operating instructions.
2-6 Emergency operation
When the remote controller or microprocessor malfunctions but all other parts are normal, emergency operation is started
by setting the dip switch SW3 on the indoor controller board.
<Before emergency operation>
1. Make sure the compressor and the indoor fan are operating normally.
2. Locate the defect with the self-diagnostic function. When the self-diagnostic function indicates “protective function is
working”, release the protective function before starting the emergency operation.
CAUTION: When the self-diagnostic function indicates a check code of “P5” (drain pump malfunction), DO NOT start
the emergency operation because the drain may overflow.
<How to operate>
1. For emergency cooling, set the dip switch SW3-1 to ON and SW3-2 to OFF.
Emergency
cooling
1
1 ON
2
Normal
operation
1
SW3
2
1.2 OFF
Indoor controller board
2. Turn ON the outdoor unit breaker and then ON the indoor unit breaker.
Emergency operation will now start.
3. During emergency operation, the indoor fan operates on high speed, the auto vanes do not operate.
4. To stop emergency operation, turn OFF the indoor unit breaker.
5. Movements of the vanes do not work in emergency operation, therefore you have to slowly set them manually to the
appropriate position.
NOTE: The remote controller POWER ON/OFF button can not start/stop emergency operations.
CAUTION: Do not use emergency cooling for more than 10 hours, as the indoor coil may freeze.
OC274-35
OC274--2.qxp 1.12.14 5:32 PM Page 36
2-7 Dip switch functions
Each figure shows the initial factory setting.
1. On remote controller board
(1) SW17(Address selector)
1 2 3 4 5 6 7 8
ON
OFF
SW17-1~6) For address setting
SW17-7) When two remote controllers are used,this switch sets the controller function.
OFF:The remote controller is set as a main controller.
ON:The remote controller is set as a sub controller.
SW17-8) Switch for system back-up.
OFF:Without back-up
ON:With back-up
(2) SW18(Function selector)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ON
ON
OFF
OFF
for PK12FK3
for PK18/24/30/36FK3
SW18-1) Switch for timer
OFF:Single day ON:timer every day
SW18-2) Switch for filter sign
OFF:filter sign absent
ON:filter sign present
SW18-3) Switch for filter sign time setting.
OFF:100Hr ON:2500Hr
SW18-4~8) Not for use.
2. On indoor controller board
(1) SW1 (Mode selector)
1 2 3 4 5 6 7 8 9 10
ON
OFF
SW1-1) Switch that changes between FAN mode and AUTO mode
OFF:Not available
ON:Not available
SW1-2) Not for use.
SW1-3) Switch to change the temperature to start coil frost prevention
OFF:34°F
ON:36°F
SW1-4) Not for use.
SW1-5) Not for use.
SW1-6) Not for use.
SW1-7) Switch for detecting abnormalities in the outdoor unit abnormality detection
OFF:When an abnormality occurs,it is detected.
ON:Even if an abnormality occurs,it can not be detected.
SW1-8) Switch for auto restart function
OFF:This function does not work
ON:This function works.
SW1-9, 10) Not for use.
(2) SW2 (Address selector)
1 2 3 4 5 6
ON
OFF
Used in setting the unit-address for group control.
For further information,refer to page OC274-45.
OC274-36
OC274--2.qxp 1.12.14 5:32 PM Page 37
(3) SW3 (Emergency operation switch)
Normal operation
For emergency cooling
1 2
ON
OFF
1 2
ON
OFF
(4) SW5 (Model selector)
1 2 3 4
ON
OFF
SW5-1) Not for use.
SW5-2) Leave this switch as it is.
SW5-3) Not for use.
SW5-4) Not for use.
(5) SW6 (Address selector)
1 2 3 4
ON
OFF
This switch is not available for series PK.
(6) SW7 (Model selector)
Switch to set the output of phase-controlled indoor fan motor.
Address setting is available at any time.
The initial factory setting by is based on each capacity.
Model
SW7
PK18FK3
PK12FK3
ON
OFF
ON
OFF
1 2 3
PK24FK3
ON
OFF
1 2 3
PK30FK3
ON
OFF
1 2 3
ON
OFF
1 2 3
(7) SW8 (Option)
1 2 3 4 5 6
ON
OFF
SW8-1~2) Not for use.
SW8-3~4) Not for use.
SW8-5) Not for use.
SW8-6) Not for use.
(8) SW9 (Model selector)
1 2 3 4 5
ON
OFF
1 2 3 4 5
ON
OFF
for PK12FK3
for PK18/24/30/36FK3
SW9-1~5) Keep this switch.
3. INDOOR FAN CONTROL
Indoor fan relay output.
(a) During fan ON
The indoor fan relay turns ON. One second later, the phase control will start.
(b) During fan OFF
The phase control turns OFF. One second later, the indoor fan relay will turn OFF.
OC274-37
PK36FK3
1 2 3
OC274--2.qxp 1.12.14 5:32 PM Page 38
11
TROUBLESHOOTING
1. TROUBLE IN TEST RUN
Symptom
Cause
Check points
The display “CENTRALLY
CONTROLLED” on remote
controller does not disappear.
1) Wrong address setting of remote controller/indoor controller board.
2) Timer adapter is connected to the
remote controller.
3) Signal transmission error between
indoor unit and remote controller.
1) Check the address setting of remote controller
and indoor controller.
2) Make sure the timer adapter is used correctly.
3) 1 Turn another remote controller’s DIP SW177 ON to make it sub controller.
2 Connect the sub controller to the unit, and
turn circuit breaker ON.
● If the display “centrally controlled” disappears, replace the original remote controller.
● If the display remains the same, replace the
indoor controller board.
When remote controller
POWER button is turned
ON, the check code
“E0”appears.
1) Signal transmission error between
indoor unit and remote controller
1) 1 Connect a sub remote controller.
2 Turn circuit breaker ON.
If the display “centrally controlled” remains,
replace the indoor controller board.
3 If the display disappears, turn the remote
controller POWER button ON and check as
follows.
Remote controller Sub remote controller
Malfunction
Malfunction of
1 Operating Display E0 Display
indoor Unit
of
2 Operating Display Operating Display Malfunction
Remote controller
Malfunction of
indoor Unit and
Remote Controller
3 No Display
E0 Display
4 No Display
of
Operating Display Malfunction
Remote controller
When remote controller
POWER button is turned
ON, operating display
appears, but disappears
soon.
1) Short circuit of indoor/outdoor connecting wire
2) Short circuit of transmission wire.
3) Wrong operation of remote controller
due to noise wave emitted by other
appliances.
1), 2) Check the wire
3) Turn the circuit breaker OFF, and then turn
ON.
If the remote controller remains abnormal,
despite the above measures, replace the indoor
controller board.
Despite turning POWER
button ON, the remote
controller display does not
appear.
1) Damaged remote controller.
2) Short circuit of transmission wire.
3) Bad contact of indoor CN40.
4) CN40 is attached to a sub unit.
5) Damaged power board.
6) Bad contact of CN2D.
7) Blown fuse.
8) Circuit breaker OFF.
1) Measure the voltage between terminals of
remote controller. If no voltage, remove the
terminals and measure the voltage between
wires. If the voltage is between 6VDC and
12V, replace the remote controller.
2) ~ 8) Check each point.
If it is not defective, replace the indoor
controller board.
OC274-38
OC274--2.qxp 1.12.14 5:32 PM Page 39
2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER
(WIRED REMOTE CONTROLLER)
2-1 When malfunction occurs during operation
When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote
controller.
(1) ON the set temperature display part, “CHECK” appears, and the unit CHECK mode
address and the check code are displayed alternately at one-second
intervals. (Check mode)
Example
Check
code
Unit
address
MODE
TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER
AIR SWEEP CHECK
(2) When one remote controller controls several units in the group control, the LCD shows the unit address and check code of the first malfunctioning unit.
(3) To cancel the check mode, press the ON/OFF button. In remote
ON/OFF control, press the remote ON/OFF switch. In centralised
control, turn OFF the ON/OFF button of centralised controller.
SET TEMP.
TIMER SET
TEST RUN
REMOTE CONTROLLER
Check button
NOTE: The latest check code is memorised, even if the check mode is cancelled by the way mentioned above. It takes
60 seconds maximum to display the memorised check code.
2-2 How to use the self diagnostic function for service
A. For normal control with one unit and one remote controller
(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.
(2) During the self diagnostic function, “CHECK MODE” appears at two positions on the remote controller display. Then, at
least 10 seconds later, the unit address and the check code is alternately displayed at one-second intervals.
(3) Check and repair the unit according to the check code. (Refer to the next page.)
B. For group control using one remote controller
(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.
(2) Press the
SET TEMP. button or
SET TEMP. button on the remote controller to advance or go back to the
unit address. Each time
SET TEMP. button is pressed, the unit address advances by one. Each time
SET
TEMP. button is pressed, the unit address goes back by one.
The check code and the unit address, appear alternately.
(3) The check code “U8” means no malfunction has occurred since installation.
The check code “E0” means the following conditions:
● The unit address displayed on the remote controller does not apply to any unit.
● power is not supplied to the unit.
● Signal transmitting/receiving circuit is abnormal.
(4) Check and repair the unit according to the check code. (Refer to the next page.)
OC274-39
OC274--2.qxp 1.12.14 5:32 PM Page 40
Check
Diagnosis of malfunction
Cause
Check points
code
E0
Signal transmitting/receiving During individual unit control
1) Check the transmission wire.
error
1) Bad contact of transmission
2) Check with another remote controller. If “E0” is
(Indoor controller does not
wire
still indicated, replace the indoor controller
respond to remote controller 2) Signal transmitting/receiving cirboard.
signal.)
cuit is abnormal.
If other check code appears. replace the original remote controller.
P1
Abnormality of room temper- 1) Bad contact of thermistor
ature thermistor (RT1)
2) Damaged thermistor
P2
Abnormality of indoor coil
thermistor (RT2)
P3
Signal transmission error
(Remote controller does not
respond to indoor controller
signal.)
1) Check the transmission wire.
1) Bad contact of transmission
2) Check with another remote controller.
wire
If “P3” is still indicated, replace the indoor
2) Signal transmitting/receiving cirboard.
cuit is abnormal.
If other check code appears, replace the origi3) Wrong operation due to noise
nal remote controller.
wave emitted by other appli3) Short-circuit between 1 and 2 of CN40 and
ances
attach CN40 to the following units.
● Second unit in twin control
● Second and third units in triple control
● Sub units in group control
P4
Abnormality of drain sensor
1) Bad contact of transmission
wire
2) Damaged thermistor
1) Check the connector.
2) Measure the resistance of the thermistor 1 - 3.
32°F ···6kΩ
59°F ···3.2kΩ 86°F ···1.8kΩ
41°F ···4.8kΩ 68°F ···2.6kΩ 95°F ···1.5kΩ
50°F ···3.9kΩ 77°F ···2.2kΩ 104°F 1.3kΩ
If the resistance is normal, replace the indoor
controller board.
P5
Malfunction of drain pump
1) Malfunction of drain pump
2) Damaged drain sensor
1) Check the drain pump.
2) Check the drain sensor.
(Check the drop of water is on.)
If the resistance is normal, replace the indoor
controller board.
P6
Freezing protection/
overheating protection
is working.
1) Short cycle of air cycle
2) Dirty air filter
3) Damaged fan
4) Abnormal refrigerant
1)
2)
3)
4)
P7
System error
1) Wrong address-setting
1)
2) Signal transmitting/receiving cir- 2)
cuit of remote controller is
abnormal.
3) Wrong SW6-setting
3)
Check the address-setting.
Check with another remote controller. If check
code other than “P7” appears, replace the original remote controller.
Check SW6 setting.
P8
Abnormality in outdoor unit
1) Wrong wiring of indoor/outdoor
connecting wire
2) Reversed phase
3) Protection device is working
4) Damaged outdoor coil thermistor
1)
2)
3)
4)
Check the indoor/outdoor connecting wire.
Change the connection of electric wiring.
Check the protection device.
Measure the resistance of the outdoor coil thermistor. If the resistance is normal, replace the
outdoor controller board.
OC274-40
1) Check the thermistor.
2) Measure the resistance of the thermistor.
Normal resistance should be as follows.
32°F····15kΩ
86°F·····4.3kΩ
50°F······9.6kΩ 104°F ···3.0kΩ
68°F······6.3kΩ
If the resistance is normal, replace the indoor
controller board.
Clear obstructions from the air cycle.
Clean the air filter
Check the fan.
Check the refrigerant temperature.
OC274--2.qxp 1.12.14 5:32 PM Page 41
3. WRONG WIRING ON SITE
Symptom due to wrong wiring between indoor and outdoor units
Wrong wiring
Indoor unit
1
2
Thermostat
Outdoor unit
1
Phenomena
OFF
The outdoor unit stops.
ON
Operation stops. 9 minutes later, the check code ¨P8¨ appears
on the remote controller display.
OFF
Operation stops.
ON
9 minutes later, the check code ¨P8¨ appears on the remote controller display.
2
Disconnect between 1 and 1 or 2 and
2.
OC274-41
OC274--2.qxp 1.12.14 5:32 PM Page 42
4. OTHER TROUBLES AND CAUSES
vanes do not work.
t
Unit stops after 5 to
20 seconds operation
Air discharge display
is OFF and air discharge button does
not operate.
Protection function is working.
t
In this case, remote
controller is normal.
Power ON/OFF button
is not available.
Vane motor does not work.
Limit switch does not work.
Connector is poorly connected.
Vane motor is poorly assembled.
Indoor controller board is damaged.
t
Indoor controller board
deems the auto vanes
are not attached to the
unit.
Horizontal angle can
not be detected.
Beep sound is heard,
but display is turned
OFF.
Beep sound is not
heard, and display
remains OFF.
t
t
t
t
t
Vane motor is damaged.
Vane motor relay is damaged.
Limit switch is damaged.
The size of the cam is wrong.
Refer to check code on remote controller display.
See page OC274-40.
Indoor controller is
damaged.
Dip switch setting is
wrong.
Indoor controller is
damaged.
Vane motor is damaged.
Vane motor limit switch
is poorly connected.
Auto vane is wired after
power is turned to ON.
t
Indoor/outdoor connecting wire is connected
incorrectly.
Indoor/outdoor connecting wire shorts.
Compressor protector is
damaged.
Defroster is broken.
t
Remote controller is
damaged.
Transmission wire is
poorly connected
“CENTRALLY CONTROLLED” is displayed.
OC274-42
t
t
t
Vane motor limit switch
is damaged.
Vane motor is damaged.
Poorly connected
Disconnected
Transmission wire is
damaged.
Connector is poorly
connected.
Indoor terminal block is
poorly connected.
Remote controller terminal block is poorly
connected.
OC274--2.qxp 1.12.14 5:32 PM Page 43
5. HOW TO CHECK THE PARTS
Parts name
Check points
Room temperature
thermistor
(RT1)
Pipe temperature
thermistor
(RT2)
Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 50°F to 86°F)
Normal
4.3k' to 9.6k'
Abnormal
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
Fan motor (MF)
Relay connector
1
Red
5
Motor terminal
or
Relay connector
1
3 White
Black
3
Red-Black
White-Black
5
Protector
Red
M
Brown-Yellow
Brown-Blue
Red-Orange
Red-Pink
Blue
Brown
Pink
Yellow
Abnormal
30,36FK3
22.0'i10%
30.7'i10%
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F to 86°F)
Orange
Connector
12FK3
34.81'i10%
40.84'i10%
Normal
PK
18,24FK3
33.1'i10%
30.8'i10%
Opening and closing temperature of protector.
Open: 266i41°F (Fan motor OFF)
Close: 176i68°F (Fan motor ON)
Vane motor (MV)
4
5
2
(Refer to the thermistor)
3 6 1
Normal
Abnormal
186 to 214'
Open or short
<Thermistor Characteristic graph>
< Thermistor for lower temperature >
50
Thermistor for
lower temperature
Room temperature thermistor(RT1)
Pipe temperature thermistor(RT2)
Resistance (K")
40
Thermistor R0=15k' ± 3%
Fixed number of B=3480k' ± 2%
Rt=15exp { 3480(
32°F
50°F
68°F
77°F
86°F
104°F
1
273+t
1 )}
273
15k'
9.6k'
6.3k'
5.4k'
4.3k'
3.0k'
30
20
10
0
OC274-43
-4
14
32 50 68 86 104 122
Temperature (°F)
OC274--2.qxp 1.12.14 5:32 PM Page 44
12
SYSTEM CONTROL
1. VARIETY OF SYSTEM CONTROL FUNCTIONS
1 Group control with
a single remote
controller
(See page OC27445)
Unit
Unit
Many units, installed at different locations, can be started
and controlled with a single remote controller. The remote
controller can be mounted in a different location using a
non-polar two-wire cable, which can be extended up to
500m. A maximum of 50 units can be controlled with a
single remote controller. All units operate in the same
mode.
Unit
Remote
controller
2 Control using two
remote controllers
(See page OC27446)
Unit
Unit
Two remote controllers can be used to control either one
unit or a group of units. Units can then be controlled from
a distance or at close range. Units operate according to
the latest command from either remote controller.
Unit
Remote
controller
3 Both remote
ON/OFF and individual controls
(See page OC27446)
w Timer adapter
(PAC-SA89TA-E)
is needed.
Optional
adapter
Relay box
Unit
Remote
ON/OFF
switch
4 Individual control
by grouping
remote controllers
(See page OC27447)
Remote
controller
Unit
Unit
By grouping the remote controllers in one place, several
units installed at different locations can be controlled individually, and operation conditions of all units are visible
without a special control board. The control method is the
same as that of the single unit with a single remote controller.
Unit
Remote
controller
5 Multiple remote
control display
(See page OC27448)
w Multiple display
adapter
(PAC-SA88HA-E)
is needed.
6 Auto restart function
(See page OC27448)
Unit
Remote control
display board
Unit
All units can be turned on or off simultaneously using a
remote ON-OFF switch. Also, each unit can be controlled
individually by each remote controller. During remote ONOFF control, a message of “CENTRALLY CONTROLLED”
is displayed on the LCD of the remote controller.
This is available for both one unit control and several units
control.
Unit
Several units can be controlled with a remote control display board. Operation conditions of all the units are visible with the remote control display board.
Individual control by each remote controller is also possible.
Remote
controller
Circuit breaker
Remote
controller
A unit can be started or stopped with the circuit breaker
on or off.
Remote controller is also available.
With this function, when the power is restored after power
failure, the unit will restart automatically. (However, when
the remote controller POWER ON/OFF button is OFF, the
unit will not start.)
OC274-44
OC274--2.qxp 1.12.14 5:32 PM Page 45
2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER
A maximum of 50 units can be started in order according to the dip switch settings
Figure 1
To remote
controller
To next
unit
To next unit
L1 N GR
1 2
Next unit
electrical box
1 2
Master unit
electrical box
L1 N GR
2-1 How to wire
(1) Connect the remote controller to the double terminal block
on the indoor controller board of the master unit (No.0 unit).
(See Figure 1.)
(2) Connect the double terminal block of the master unit to the
double terminal block of No.1 unit.
(3) Connect the double terminal block of No.1 unit to the double terminal block of No.2 unit.
(4) Continue the process until all the units are connected with
two-wire cables. (See Figure 2.)
(5) Remove the connector CN40 from the indoor controller
board of each unit except the master unit. (See Figure 3.)
(6) Set the unit-address of each unit with SW2 on the indoor
controller board following the instructions below.
2-2 How to set unit-address
The unit-address also serves as a successive-start timer which
starts each unit at intervals of 1 second. If two or more units
have the same unit-address in a group control, operation stops
due to system error. Be sure to set SW2 correctly following the
instructions below.
(1) Each lever of SW2 shows the number as follows.
SW2-1 : 1
SW2-4 : 8
SW2-2 : 2
SW2-5 : 16
SW2-3 : 4
SW2-6 : 32
(2) Total number of levers turned to ON shows the address of
the unit.
For example, to set No.3 unit, turn ON SW2-1 and SW2-2.
(3) In this way, set from the master unit to the last unit.
Do not forget to set the master (No. 0) unit.
The last unit
dose not have
this wire.
Figure 2
Master
unit
No.1 unit
No.2 unit
Last unit
2-wire cable
Figure 3
Indoor controller board
▼
Should be removed
from all units other
than unit No.0:
(Master Unit).
CN40
CN40
SW2
SW2
ON
1
2
3
4
5
6
Setting examples
Master (No. 0) unit
No. 1 unit
No. 2 unit
No. 4 unit
No. 8 unit
No. 16 unit
No. 32 unit
ALL OFF
1 ON
2 ON
3 ON
4 ON
5 ON
6 ON
SW2
1
Unit address & start
delay in seconds.
2
3
4
5
6
1
0
2
3
4
5
6
1
1
2
3
4
5
6
1
2
2
3
4
5
6
1
4
2
3
4
5
6
1
8
2
3
16
4
5
6
1
2
3
4
32
2-3 Unit control
The remote controller can control all units ON/OFF, temperature, air flow, and swing louver. However, the thermostat in
each unit turns ON or OFF individually to adjust to the room temperature.
OC274-45
5
6
OC274--2.qxp 1.12.14 5:32 PM Page 46
3. CONTROL USING TWO REMOTE CONTROLLERS
Two remote controllers can be used to control either one unit or a group of units. Units operate according to the latest command from either of the two remote controllers.
Before operation, be sure to set one remote controller as the “main controller” and the other as the “sub controller”, using dip
switch SW17-7 of the remote controller.
Figure 4
Individual
operation
Multiple operation
Remote
controller
Remote
controller
Remote
controller
Remote
controller
3-1 How to set SW17-7 (See Figure 5.)
(1) For the main remote controller, turn SW17-7 OFF.
(2) For the sub remote controller, turn SW17-7 ON.
3-2 Remote controller LCD indication
(1) The same indications always appear on both the
main and sub remote controllers, except during the
timer operations.
(2) Timer operations can be set with either of the two
remote controllers. However, LCD indication appears
only on the remote controller used for timer-settings.
(3)If both remote controllers are set for timer operation
with different time-settings, the timer operation with
the shorter remaining-time is effective.
(4) Self-diagnostic function is available with either of the
two remote controllers. If one of the remote controllers is used for the self-diagnostic function, the
other remote controller displays the check mode.
If the self-diagnostic function is reset by either of the
two remote controllers, both remote controllers are
reset.
Figure 5
Remote controller
SW17
Main remote controller
Sub remote controller
F
OF
8
7
6
5
4
3
2
F
OF
1
8
7
6
5
4
3
2
1
Turn SW17-7 ON.
4. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS
This method is available to control one unit or any number of units.
The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switch
to the system. Timer adapter is an optional part. Other parts are available on the market.
(A) To start all units in order by remote ON-OFF switch
(B) To stop all units simultaneously by remote ON-OFF switch
(C) To switch between the remote ON-OFF control and the individual remote control
4-1 System
Figure 6 shows the case of three units. The same is the case with any number of units.
Figure 6
Timer adapter
PAC-SA89TA-E
power supply of
control circuit
Remote
ON/OFF
switch
Relay box
2-wire
remote
Timer adapter cables
controller
cable
Remote
controller
OC274-46
OC274--2.qxp 1.12.14 5:32 PM Page 47
NOTE1 : Install the relay box where you can be serviced it easily.
NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control
circuit.
NOTE3 : When the power supply of the control circuit is 115V AC,
● Do not connect the control circuit wire to the remote controller cable directly.
● Do not place the control circuit wire and the remote controller cable into the same conduit tube.
4-2 Basic wiring
Caution : Before starting all units simultaneously by the remote ON-OFF switch, be sure to connect a sequence-start timer
into the remote ON-OFF circuit. Otherwise, a rush of starting current may damage the power supply.
Remote
ON/OFF
switch
Power
supply
No.1 unit
relay box
No.2 unit
relay box
SW1
Next unit
SW2
Glow switch or pilot lamp can be
combined to easily identify the
on-off mode of SW1 and SW2.
To
No.1
unit
T
T
X2
X2
T
To
No.2
unit
X2
T
X2
Remote controller
Timer adapter cables
4-3 Switch function of remote ON-OFF switch
SW1
(Switches between
remote ON and OFF.)
ON
(Start)
OFF
(Stop)
SW2
(Switches between remote ON-OFF and individual control)
ON
OFF
(Remote ON-OFF control)
(Individual control)
All units start together.
w1
Each unit can be controlled by each
Individual control is not available.
remote controller.
All units stop together.
w2
Remote ON-OFF switch is not available.
Individual control is not available.
w1After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller.
w2After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.
5. INDIVIDUAL CONTROL BY GROUPING THE
REMOTE CONTROLLERS
● Grouping the remote controllers allows individual control and centralised monitoring of units installed in different places without a
special control board.
● Remote control cables are extendible up to 550 yards When the
cable length exceeds 33ft, use the double-insulated two-care cable
such as Belden 9407. Also, the cable thickness must be No. 22
AWG or above.
● When gathering the power ON/OFF switches of air conditioners
near the remote controllers, you should also install the power
ON/OFF switch near each unit to prevent electric trouble during
servicing.
Remote
controller cable (2-core)
Remote controller
OC274-47
OC274--2.qxp 1.12.14 5:32 PM Page 48
6. MULTIPLE REMOTE CONTROL DISPLAY
You can control several units with a multiple remote control display, by
wiring an optional multiple display adapter (PAC-SA88HA-E) with relays
and lamps on the market.
How to wire
(1) Connect the multiple display adapter to the connector CN51 on the
indoor controller board.
(2) Wire three of the five wires from the multiple display adapter as shown
in the figure below.
<Wiring >
CN51
X2
YELLOW
X1
ORANGE
RED
Electrical insulation is needed.
BROWN
1
connector(5P)
CN51
GL
X2
GREEN
5
Indoor controller board
Optional multiple display
adapter
X1
RL
Power
supply
Wiring at the actual place
CN51
The maximum distance between
indoor board and relay is 33ft.
<System>
[Notes on Signs]
X1:Relay (for operation lamp)
X2:Relay (for check lamp)
RL:Operation Lamp
GL:Check Lamp
[Field supplied parts]
Relays:12V DC with rated coil power
consumption below 0.9W.
Lamps:Matching to power supply voltage.
3wires
3wires
3wires
Power
supply
2wires
No.1 unit
No.2 unit
Remote
controller
cable
Multiple remote control
ON-OFF display
(Field supply)
Remote
controller
No.3 unit
Relay box
(Field supply)
Remote
controller
Remote
controller
(Operation check)
<Wiring diagram>
Power
supply
RL-1
X1-1
GL-1
X2-1
X1-1
X2-1
RL-2
X1-2
GL-2
X2-2
RL-3
X1-3
GL-3
X2-3
X1-2
1
Multiple remote
controller adapter
5
No.1 unit
1
No.2 unit
X2-2
X1-3
X2-3
Multiple Remote Control Display
5
1
5
No.3 unit
connect to
the connector CN51
Relay box
7. AUTO RESTART FUNCTION
By setting the dip switch SW1-8 to ON, the air conditioner can be started/stopped by power supply ON/OFF.
If the air conditioner is OFF before the power failure, it will not start operation by power restore.
•This function is mainly to emergency performance when the power supply stops temporarily. Therefore, since the protection function (for example, crank case heater and prevention from restarting in 3 minutes, etc.) of the device is not operated, this function should not be used mostly.
8. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL
<Wiring>
A
A
B
B
Brown
Red
A : an optional timer adapter
B : a single-throw switch
Orange
Remote controller
Brown
Red
Orange
Remote controller
For remote control, connect the optional timer adapter (PAC-SA89TA-E)
OC274-48
OC274--2.qxp 1.12.14 5:32 PM Page 49
13
DISASSEMBLY PROCEDURE
Indoor unit PK24FK3
OPERATING PROCEDURE
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.
PHOTOS&ILLUSTRATION
Figure 1
Hanger of indoor unit
Catch of installation plate
Metal fixture
Screws
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.
Figure 2
Connector
Indoor controller
board
Right side panel
Terminal cover
Connector
Electrical box cover
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.
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 connector.
(7) Disconnect the connector of the fan motor lead wire.
(8) Remove the electrical box.
OC274-49
Photo 1
Indoor controller
board
Electrical
box cover
Catches
Room temperature thermistor
Photo 2
Pipe temperature thermistor
Screws
Electrical box
OC274--2.qxp 1.12.14 5:32 PM Page 50
OPERATING PROCEDURE
PHOTOS&ILLUSTRATION
(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 can be
serviced.
Relay
Photo 3
Power board
Capacitor
Indoor controller
board case
5. Removing the vane motor
(1) Remove the right side panel.
(2) Remove the screw of the electrical 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 controller board.
Photo 4
Electrical box
Screws
Vane motor
Indoor controller board
6 Removing the intake grilles
(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 center cover to remove.
(5) Remove the screws of the grilles.
(6) Pull the lower side of the grille toward you and slide the
upper to the right to remove the grilles.
Figure 3
Catch on the left side panel
Catch on
the unit
Photo 5
Left side panel
Slide to the
right
Grilles
Screws for grilles
7. Removing the drain pan
(1) Remove the left and right side panels.
(2) Remove the grilles.
(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.
Photo 6
Drain pan
Drain hose
band
Screws
Drain hose
OC274-50
OC274--2.qxp 1.12.14 5:32 PM Page 51
OPERATING PROCEDURE
8. Removing the line flow fan and the fan motor
(1) Remove the left and right side panels.
(2) Remove the grilles.
(3) Remove the electrical box.
(4) Remove the drain pan.
(5) Loosen the screw that fixes the line flow 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 2 screws on the left and right sides of the heat
exchanger, and pull the bearing support toward you. (See
Photo 11.)
(9) Remove the screw of the center support, and remove the
support. (See Photo 10. )
(10) Pull the left-hand side of the heat exchanger toward you,
and remove the line flow fan.
PHOTOS
Photo 7
Screw
Line flow fan
Fan motor
Photo 8
Screw
Fan motor
Motor fixture
Photo 11
Photo 9
Fan motor
Screw
Screw
Heat exchanger
Bearing support
Motor support
Motor
support
Photo 10
Line flow fan
Line flow fan
Center support
OC274-51
Screw
OC274--2.qxp 1.12.14 5:32 PM Page 52
14
PARTS LIST
STRUCTURAL PARTS
PK12FK3
1
9
2
8
7
5
2
5
6
2
3
4
Part number that is circled is not shown in the figure.
Q'ty / set
No.
Parts No.
Parts Name
Specifications
PK12FK3
1 R01 47J 651 FRONT PANEL
1
2 R01 KV5 096 SCREW CAP
4
3 R01 47J 500 AIR FILTER
2
4 T7W 580 058 SERVICE PANEL
1
5 R01 A20 054 FILTER CATCH
2
6 R01 KV5 658 CORNER COVER
1
7 R01 KV5 623 UNDER COVER
1
8 R01 KV5 635 BOX ASSEMBLY
1
9 R01 KV5 808 BACK PLATE
1
10 R01 12G 523 DRAIN SOCKET
1
OC274-52
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
OC274--2.qxp 1.12.14 5:33 PM Page 53
STRUCTURAL PARTS
PK18FK3
PK24FK3
PK30FK3
PK36FK3
8
7
1
2
3
6
6
5
4
Part numbers that are circled are not shown in the figure.
No.
1
2
3
Parts No.
Parts Name
Specifications
Q'ty / set
PK
Wiring
Remarks
Diagram
18FK3 24FK3 30FK336FK3 (Drawing No.) Symbol
R01 12G 662 LEFT SIDE PANEL
1
1
R01 E01 812 UNDER PLATE
1
1
R01 E00 812 UNDER PLATE
1
R01 E00 811 NOSE
1
1
1
1
1
1
1
R01 E01 811 NOSE
4
R01 A17 500 FILTER
4
4
5
5
5
R01 12G 661 RIGHT SIDE PANEL
1
1
1
1
6
R01 12G 691 INTAKE GRILLE
2
2
2
2
R01 12G 808 BACK PLATE
1
1
1
1
R01 E00 641 TOP PLATE
1
1
R01 16G 692 INTAKE GRILLE
1
1
1
1
7
8
9
R01 16G 808 BACK PLATE
1
R01 E01 641 TOP PLATE
1
10 R01 12G 523 DRAIN SOCKET
OC274-53
1
1
OC274--2.qxp 1.12.14 5:33 PM Page 54
ELECTRICAL PARTS
PK12FK3
4
3
1
2
28
5
29
30
6
8
27
7
9
22
21
16
23
24 25 26
20 19
18
10
15
14
11
12
17
13
Q'ty / set
No.
Parts No.
Parts Name
Specifications
PK12FK3
1
T7W B07 480 HEAT EXCHANGER
1
2
R01 KV5 114 LINE FLOW FAN
1
3
R01 566 103 SLEEVE BEARING
1
4
R01 KV5 106 BEARING SUPPORT
1
5
R01 KV5 102 BEALING MOUNT
1
6
T7W 51J 675 FAN GUARD
1
7
T7W 52J 675 FAN GUARD
1
8
T7W B04 223 VANE MOTOR
1
9
R01 KV5 530 NOZZLE ASSEMBLY
1
10
R01 KW1 002 LEFT ROTARY VANE
1
11
R01 KV5 048 CENTER SUPPORT
1
12
R01 KV5 092 VANE SLEEVE
1
13
R01 71G 527 DRAIN HOSE
1
14
R01 KW2 002 RIGHT ROTARY VANE
1
15
R01 KV5 059 ARM
2
OC274-54
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
MV
OC274--2.qxp 1.12.14 5:33 PM Page 55
Q'ty / set
No.
Parts No.
Parts Name
Specifications
PK12FK3
16 R01 KV5 038 GUIDE VANE
16
17 T7W A00 305 REMOTE CONTROLLER CABLE 33ft
1
18 T7W E05 713 REMOTE CONTROLLER
1
19 R01 KV5 130 MOTOR SUPPORT
1
20 T7W B04 762 FAN MOTOR
PK4W40-K
1
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
R.B
MF
21 R01 KV5 105 RUBBER MOUNT
1
22 R01 KV5 135 MOTOR COVER
1
23 T7W E25 310 CONTROLLER BOARD
1
I.B
24 T7W 410 239 FUSE
250V 6A
2
F1<I.B>
25 T7W 410 716 TERMINAL BLOCK
3P(L1, N, GR)
1
TB2
26 R01 556 246 TERMINAL BLOCK
2P(1, 2)
2
TB4,5
1
P.B
1
C
29 T7W E12 202 ROOM TEMPERATURE THERMISTOR ROOM TEMPERATURE
1
RT1
30 R01 E02 202 PIPE TEMPERATURE THERMISTOR PIPE (INDOOR COIL)
1
RT2
27 T7W E02 313 POWER BOARD
28 T7W B04 255 RUN CAPACITOR
7µF 220V
OC274-55
OC274--2.qxp 1.12.14 5:33 PM Page 56
ELECTRICAL PARTS
PK18FK3
PK24FK3
PK30FK3
PK36FK3
25
1
2
26·27
3
24
5
23
4
6
22
21
8
7
20
16
15
13 14
9
10
No.
Parts No.
Parts Name
11
12
Specifications
17
Q'ty / set
PK
R01 005 103 SLEEVE BEARING
1
1
1
1
2
R01 Z61 102 BEARING MOUNT
1
1
1
1
R01 13G 114 LEFT LINE FLOW FAN
1
1
1
1
1
1
1
1
1
1
1
1
R01 17G 114 LEFT LINE FLOW FAN
4
R01 13G 115 RIGHT LINE FLOW FAN
R01 17G 115 RIGHT LINE FLOW FAN
T7W B04 480 HEAT EXCHANGER
5
1
T7W B06 480 HEAT EXCHANGER
1
T7W B05 480 HEAT EXCHANGER
6
19
Wiring
Remarks
Diagram
18FK3 24FK3 30FK3 36FK3 (Drawing No.) Symbol
1
3
18
T7W E13 529 DRAIN PAN
1
T7W E14 529 DRAIN PAN
OC274-56
1
OC274--2.qxp 1.12.14 5:33 PM Page 57
No.
Parts No.
Parts Name
Specifications
Q'ty / set
PK
Wiring
Remarks
Diagram
18FK3 24FK3 30FK3 36FK3 (Drawing No.) Symbol
7
R01 12G 621 CENTER COVER
1
1
1
1
8
R01 12G 063 JOINT SHAFT
1
1
1
1
2
2
2
2
9
R01 12G 002 AUTO VANE
R01 16G 002 AUTO VANE
10 R01 KV5 527 DRAIN HOSE
1
1
1
1
11 R01 12G 223 VANE MOTOR
1
1
1
1
12 T7W A00 305 REMOTE CONTROLLER CABLE 33ft
1
1
1
1
13 T7W E12 202 ROOM TEMPERATURE THERMISTOR ROOM TEMPERATURE
1
1
1
1
RT1
14 R01 E02 202 PIPE TEMPERATURE THERMISTOR
PIPE (INDOOR COIL) TEMPERATURE
1
1
1
1
RT2
15 T7W 410 716 TERMINAL BLOCK
3P(L1, N, GR)
1
1
1
1
TB2
16 R01 556 246 TERMINAL BLOCK
2P(1, 2)
2
2
2
2
TB4,5
17 T7W B02 255 RUN CAPACITOR
8µF 220V
1
1
1
1
C
1
1
1
1
I.B
2
2
2
2
F1.2<I.B>
1
1
1
1
P.B
2
2
2
2
18 T7W E25 310 CONTROLLER BOARD
19 T7W 410 239 FUSE
250V 6A
20 T7W E02 313 POWER BOARD
21
R01 12G 105 RUBBER MOUNT
R01 16G 105 RUBBER MOUNT
22
T7W B02 762 FAN MOTOR
PN4W40-K
T7W B03 762 FAN MOTOR
PN4W70-K
1
1
MF
1
1
23 R01 12G 103 SLEEVE BEARING
1
1
1
1
24 R01 KV5 102 BEARING MOUNT
1
1
1
1
25 T7W E05 713 REMOTE CONTROLLER
1
1
1
1
2
2
2
2
26 T7W 53J 675 FAN GUARD
27 T7W 71J 675 FAN GUARD
OC274-57
MV
MF
R.B
OC274--2.qxp 1.12.14 5:33 PM Page 58
15
OPTIONAL PARTS
1. TIMER
When using a program timer, a program timer adapter (PAC-825AD) is also needed.
(PAC-825AD is included with PAC-SC32PTA.)
Part No.
Model Name
PAC-SC32PTA (with set back function)
Program timer
1-1 Program timer specifications
Parts name
Parts No.
Exterior dimensions (inch)
Installation
Type of clock
Clock accuracy
Display-Time
-Week
-Timer setting unit
Program cycle
Timer setting unit
No. of set points
Power rating
Program timer
PAC-SC32PTA
5-4/32x4-23/32x23/32 (130x120x18mm)
Wall mount
Quartz
±50 second / month at 77°F
Liquid crystal display
Liquid crystal display
Liquid crystal display
24 hours
30 minutes
48 / day
5V DC ±5% (Supplied by Remote Controller)
1-2 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-SC32PT)
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 79°F
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.
82.5˚F
79˚F
8:00
Normal
operation
23:00
Setback
operation
8:00
Normal
operation
1-3. How to connect program timer
(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 5-wire cable as shown in the figure below
Connect to indoor unit
2-wire cable
SET
FILTER
SET
MONITOR
NOTE:While the program timer is connected to the remote controller, the
24hour ON/OFF timer on the remote controller will not operate.
BACK
S M T W T F S
0
3
6
12
12
15
18
21
15
CHECK MODE
24
TEST RUN
SET/MONITOR
TODAY
WEEKLY
SETTING
SET BACK
ON
CLOCK
OFF
ON
DAILY
SETTING
SET BACK
DAILY TIMER
OFF
PROGRAM TIMER
PAC-SC32PTA
4
Use 5-wire cable
Connect to CN1
Connect to CN1
OC274-58
OC274--2.qxp 1.12.14 5:33 PM Page 59
1-4. Names and functions
<PAC-SC32PTA>
WEEKLY TIMER SETTING DISPLAY
CURRENT TIME DISPLAY
SET BACK DISPLAY
DAILY TIMER SETTING DISPLAY
Sets timer for a week.
During MONITOR status,current
time is display.
During Daily timer setting, a
time desire for timer setting is
displayed.
Indicates the set back range.
24 hours is divided into 48 blocks and each
block express 30 minutes.
The block display consists of 3 pattern.
Set back
1=2°F 2=4°F 3=6°F 4=8°F
SET BACK SETTING SW
SET/MONITOR DISPLAY
During SET is display, clock adjustment,
change of weekly day, daily and weekly timer
setting can be performed.
During MONITOR is display, all switches
except SET/MONITOR SW are invalidated.
This is normal status.
SET
SET
MONITOR
SET/MONITOR
BACK
S M T W T F S
TODAY
WEEKLY
SETTING
0
3
6
12
15
12
15
18
21
24
SET BACK
ON
ON
DAILY
SETTING
Used for set back setting.
ON/SET BACK/OFF SW
SET BACK
Used to specify the time setting pattern.
CLOCK
OFF
DAILY TIMER
OFF
PROGRAM TIMER
PAC-SC32PTA
WEEK DAY SETTING SW
DAILY TIMER SW
Used for week day setting.
Used for timer setting in 30 minutes unit.
MODE SELECTOR SW
CLOCK ADJUSTMENT SW
WEEKLY TIMER SW
Using this switch select “MONITOR” or “SET”
Mode.
Used for adjustment of the current time.
Used for setting timer in day of week unit.
Push
SW to advance the time. Each time the button is
pushed the time advance by 1 minute, pushing continuously
advances by 1 minute at 0.5 second interval, and when the
lower digit of minute becomes 0 indication advances in 10 minutes unit.
SW is used for reversing the time. Each time the button is
pushed the time reverses by 1 minute, pushing continuously
reverses the time by 1 minute at 0.5 second interval, and when
the lower digit of minute becomes 0 indication reverses in 10
minutes unit.
Pushing
SW moves the week day light
display in order of
S→M→T→W…
enabling to set the week day.
“MONITOR” :Indicates the current timer setting. All switch expect MODE
SELECTOR SW are invalidated
then.This is the normal status.
“SET”: Set to “SET” mode for clock adjustment, charge of week day, daily and
weekly timer setting.
OC274-59
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024
Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904
www.mrslim.com
Specifications are subject to change without notice.
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