Mitsubishi Electric PK18 Specifications

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Page 1
PK18FL3
PK24FL3
PK30FL3
PK36FL3
CONTENTS
1. TECHNICAL CHANGE ··················································································OC275- 2
2. FEATURES·····································································································OC275- 3
3. PART NAME AND FUNCTIONS····································································OC275- 4
4. SPECIFICATIONS ··························································································OC275- 5
5. DATA ··············································································································OC275- 6
6. OUTLINES AND DIMENSIONS ·····································································OC275-13
7. REFRIGERANT SYSTEM DIAGRAM····························································OC275-15
8. WIRING DIAGRAM ························································································OC275-16
9. OPERATION FLOW-CHART ·········································································OC275-17
10. MICROPROCESSOR CONTROL ··································································OC275-20
11. TROUBLESHOOTING····················································································OC275-32
12. DISASSEMBLY PROCEDURE ······································································OC275-35
13. PARTS LIST ···································································································OC275-38
OC275-1
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1
PK18FL1
PK24FL1
PK30FL1
PK36FL1
Page 2
TECHNICAL CHANGE
➔
➔
➔
➔
PK18FL3
PK24FL3
PK30FL3
PK36FL3
● REMOTE CONTROLLER has changed.
● INDOOR CONTROLLER BOARD has changed accordance with remote controller change.
1) From TRANSFORMER to POWER BOARD.
2) SW1 changed from function selector to mode selector.
3) SW2 changed from unit selector to address selector.
4) The number of switches of SW3 changed from 3 to 2 pieces.
5) Function of jumper wire for JR is blotted out and SW5 for model selector, SW6 for address selector, SW7 for model
selector, SW8 for option and SW9 for model selector are added.
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Page 3
FEATURES
CHECK TEST
MODEL RUN
SELECT
FAN
˚F
˚C
STOP AMPM
SWING
START
NOT AVAILABLE
Indoor unit
Models
Wireless Remote controller
Cooling capacity
PK18FL3
PK24FL3
PK30FL3
PK36FL3
18,500
24,000
30,000
34,200
SEER
Btu/h
Btu/h
Btu/h
Btu/h
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.
2. LCD WIRELESS REMOTE CONTROLLER
The new wireless remote controller has a larger easy-to-read temperature display, and executes ON/OFF commands
and temperature settings with a press of the button.
3. AUTO FLAP SHUTTER
With a simple flick of the OFF switch the air outlet can 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.
4. INSTALLATION : FAST AND EASILY ADAPTABLE
(1) Multi-directional piping
Multi directional drain and refrigerant piping radically improves flexibility in selecting installation layouts.
PK18/24/30/36FL3 models boast refrigerant piping in 4 directions and drain piping in 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 and convenient wireless remote controller
The presence of thumb screws on the filters means that the filters can be quickly and smoothly removed.
5. 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.
6. NITROGEN GAS IS CHARGED TO INDOOR UNIT
Indoor unit and refrigerant pipes are charged with nitrogen gas (N2) instead of R22 before shipment from the factory.
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PART NAME AND FUNCTIONS
●Wireless remote controller
● When cover is open.
CHECK TEST RUN display
CHECK&TEST RUN display indicates that
the unit is being checked or test-run.
MODEL SELECT display
display
Blinks when model is selected.
Lights up while transmission to the indoor
unit is mode using switches.
88°F display
SET TEMP. display indicates desired temperature set.
CLOCK display
OPERATION MODE display
OPERATION MODE display
Operation mode display indicates which operation mode is in effect.
display
The vertical direction of air flow is indicated.
Displays the current time.
COOL
DRY
AUTO
FAN
HEAT
TIMER display
CHECK TEST
MODEL RUN
SELECT
FAN
˚F
˚C
STOP AMPM
Displays when in timer operation or when
setting timer.
“
SWING
START AMPM
NOT AVAILABLE
ON/OFF
“
TEMP
”“
” display
Displays the order of timer operation.
”“
” display
Displays whether timer is on or off.
display
button
FAN SPEED display indicates which fan
speed has been selected.
FAN
AUTO STOP
VANE
AUTO START
SET TEMPERATURE button sets any desired
room temperature.
ON/OFF button
The unit is turned ON and OFF alternately
each time the button is pressed.
MODE
CHECK LOUVER
h
FAN SPEED SELECT button
Used to change the fan speed.
MODE SELECT button
TEST RUN
SET
min
RESET
TIMER CONTROL buttons
AUTO STOP (OFF timer): when this switch
is set, the air conditioner will be automatically stopped at the preset time.
AUTO START (ON timer): when this switch
is set, the air conditioner will be automatically started at the preset time.
CLOCK
Used to switch the operation mode between
cooling, drying, fan.
h and min buttons
Buttons used to set the “hour and minute” of
the current time and timer settings.
LOUVER button
CHECK-TEST RUN button
This switch 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.
(Not available for this model.)
CLOCK button
VANE CONTROL button
RESET button
Used to change the air flow direction.
SET button
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SPECIFICATIONS
Model
PK18FL3
PK24FL3
PK30FL3
PK36FL3
18,500
1.75
10.6
11.3
PK18FL3
24,000
2.34
10.3
10.6
PK24FL3
34,200
3.47
9.9
10.2
PK36FL3
15
1
0.7
710-530
640-480
5.3
48-41
1-1/16
15
1
0.7
710-530
640-480
7.2
48-41
1-1/16
30,000
3.06
9.8
10.7
PK30FL3
Munsell 3.4Y7.7/0.8
115, 1, 60
15
2
1.0
990-780
890-700
9.6
49-44
1-1/16
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.
Unit drain pipe I.D.
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
–
Refrigerant charge
cc <Model>
Refrigerant oil
15
2
1.0
990-780
890-700
10.5
49-44
1-1/16
55-1/8
66-5/32
9-1/4
13-3/8
53
PU18EK1
62
PU30EK1
53
PU24EK1
62
PU36EK1
Munsell 5Y7/1
208/230, 1, 60
20
16
0.75
RH247NAB
12.0
37
0.11/0.12 (23/28)
20
30
16
20
0.65+0.65
0.65+0.65
NH33NBD
NH41NAD
11.5
14.0
54
73
0.16/0.17 (33/39)
0.16/0.17 (33/39)
Capillary tube
55
55
34-1/4
11-5/8
49-9/16
207
208
With indoor unit
Indoor unit - outdoor unit : DC12V
Not supplied (optional parts)
53
33-1/2
154
3/8
5/8
30
22
0.75+0.75
NH47NAD
17.5
87
0.16/0.17 (33/39)
55
38-3/16
13-9/16
220
1/2
3/4
Flared
Flared
130
130
5 lbs 8 oz
520 <MS-56>
9 lbs 15 oz
1200 <MS32N-1>
NOTES : ❈ 1.Rating conditions —indoor : 80˚FDB, 67˚FWB outdoor : 95˚FDB,75˚FWB.
Operating range
Indoor intake air temperature
Outdoor intake air temperature
Maximum
DB 95˚F, WB 71˚F
DB 115˚F
Cooling
Minimum
DB 67˚F, WB 57˚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.)
OC275-5
164
164
10 lbs 2 oz
10 lbs 9 oz
1300 <MS32N-1>
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DATA
1. PERFORMANCE DATA
1) COOLING CAPACITY
Outdoor intake air DB temperature (˚F)
Indoor air
75
Airflow
Models
(˚F)
TPC
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
TC
SHC
TPC
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
710
DB 80˚F
PK24FL3
710
0.14
DB 80˚F
PK30FL3
990
0.15
DB 80˚F
PK36FL3
990
0.15
115
105
SHC
DB 80˚F
0.14
95
TC
B.F
PK18FL3
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
PK18FL3
1.0
0.992
0.983
0.978
0.966
0.959
0.950
0.945
—
—
PK24FL3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
PK30FL3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
PK36FL3
1.0
0.981
0.968
0.952
0.940
0.925
0.913
0.900
0.886
0.874
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2. PERFORMANCE CURVE
NOTE : A point on the curve shows the reference point.
PK18FL3 COOLING CAPACITY
SHF=0.72
36
24
71
67
63
18
indoor intake air WB temperature (°F)
12
3.0
2.5
71
67
63
2.0
1.5
1.0
023 3235
Total power consumption (kW) Total capacity (✕103 Btu/h)
30
Total power consumption (kW) Total capacity (✕103 Btu/h)
PK24FL3 COOLING CAPACITY
SHF=0.82
indoor intake air WB temperature (°F)
45
55
65(67) 75
85
95
105
indoor intake air WB temperature (°F)
30
24
67
63
18
3.5
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
115
105 115
Outdoor intake air DB temperature (°F)
PK30FL3 COOLING CAPACITY
PK36FL3 COOLING CAPACITY
SHF=0.75
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
SHF=0.71
42
Total power consumption (kW) Total capacity (✕103 Btu/h)
Total power consumption (kW) Total capacity (✕103 Btu/h)
71
3.0
Outdoor intake air DB temperature (°F)
42
71
105 115
Outdoor intake air DB temperature (°F)
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
Outdoor intake air DB temperature (°F)
OC275-7
105
115
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Condensing pressure
<Cooling mode>
PK24FL3
[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
PK18FL3
86
80
75
70
[psi.G]
100
86
80
75
70
90
Indoor DB temperature (°F)
80
Suction pressure
<Cooling mode>
PK18FL3
[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)
PK24FL3
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
OC275-8
30
40
50 60 70
80 90
Outdoor ambient temperature
100 110
DB(°F)
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Page 9
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.
<Cooling mode>
[psi. G] PK30FL3
340
330
320
310
300
290
Indoor DB temperature (°F)
280
270
260
250
240
230
220
210
200
190
180
170
160
150
140
30 40 50 60 70 80 90
PK30FL3
Condensing pressure
86
80
75
70
[psi.G]
100
Suction pressure
90
86
80
75
70
Indoor DB temperature (°F)
80
70
60
50
40
30
30
100 110
DB(°F)
Outdoor ambient temperature (°F)
40
50
60
70
80
90
100 110
DB(°F)
Outdoor ambient temperature (°F)
<Cooling mode>
PK36FL3
86
80
75
70
Condensing pressure
[psi. G] PK36FL3
340
330
320
310
300
290
280
270
260
250
240
230
220
210
200
190
180
170
160
Indoor DB temperature (°F)
150
140
30 40 50 60 70 80 90
[psi. G]
Indoor DB temperature (°F)
90
Suction pressure
80
70
60
50
40
30
100 110
DB(°F)
Outdoor ambient temperature (°F)
OC275-9
20
30
40
50
60
70
80
90
100 110
DB(°F)
Outdoor ambient temperature (°F)
86
80
75
70
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01/12/14 3:06 PM
Page 10
3. STANDARD OPERATION DATA
Model
PK18FL3
PK24FL3
PK30FL3
PK36FL3
Unit
Cooling
Cooling
Cooling
Cooling
Btu / h
18,500
24,000
30,000
34,200
SHF
—
0.82
0.72
0.75
0.71
Input
kW
1.75
2.34
3.06
3.47
INDOOR UNIT MODEL
PK18FL3
PK24FL3
PK30FL3
PK36FL3
Power supply (V, phase, Hz)
115, 1, 60
115, 1, 60
115, 1, 60
115, 1, 60
kW
0.09
0.09
0.12
0.12
A
0.7
0.7
1.0
1.0
PU18EK1
PU24EK1
PU30EK1
PU36EK1
208/230, 1, 60
208/230, 1, 60
208/230, 1, 60
208/230, 1, 60
kW
1.66
2.25
2.94
3.35
Comp. current
A
12.0
11.5
14.0
17.5
Fan current
A
0.75
0.65+0.65
0.65+0.65
0.75+0.75
Condensing pressure
psi-G
255
240
247
247
Suction pressure
psi-G
82
74
77
73
Discharge temp.
˚F
171
155
163
163
Condensing temp.
˚F
118
114
116
116
Suction temp.
˚F
51
44
46
43
Ref. pipe length
ft
25
25
25
25
DB
˚F
80
80
80
80
WB
˚F
67
67
67
67
DB
˚F
61
58
59
58
WB
˚F
59
56
58
56
Fan speed (High)
rpm
1,300
1,300
1,380
1,380
Airflow (High)
CFM
710
710
990
990
DB
˚F
95
95
95
95
WB
˚F
75
75
75
75
Fan speed upper / lower
rpm
790
Airflow
CFM
1,590
Item
Total
Capacity
Electrical circuit
Input
Fan current
OUTDOOR UNIT MODEL
Power supply (V, phase, Hz)
Refrigerant circuit
Input
Outdoor side
Indoor side
Intake air temperature
Discharge air temperature
Intake air temperature
750
750
3,170
OC275-10
750
750
3,170
760
760
3,350
OC275--1.qxp
01/12/14 3:06 PM
Page 11
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
Indoor
Intake air temperature
Outdoor
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
PK18FL3
PK24FL3
PK30FL3
PK36FL3
(CFM)
710
710
990
990
(ft / sec.)
16.1
16.1
17.7
17.7
41
41
50
50
Condition
Cooling
5. OUTLET AIR SPEED AND COVERAGE RANGE
Standard
Airflow
height
Air speed
(8.2ft)
Coverage range
(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
PK18FL3
5 lbs 8 oz
0
0
0
0
0
0
2
4
—
—
PK24FL3
9 lbs 15 oz
0
0
0
0
0
0
2
4
7
9
PK30FL3
10 lbs 2 oz
0
0
0
0
0
0
5
10
16
20
PK36FL3
10 lbs 9 oz
0
0
0
0
0
0
5
10
16
20
Model
Refrigerant piping length (over way)
OC275-11
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01/12/14 3:06 PM
Page 12
7. NOISE CRITERION CURVES
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
PK18FL3
PK24FL3
NOTCH SPL(dB)
Hi
48
Lo
41
LINE
3.3ft
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
PK30FL3
PK36FL3
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
Ambient temperature 80˚F
Test conditions are based on JIS Z8731
NOTCH SPL(dB)
Hi
49
Lo
44
LINE
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
OC275-12
Unit
Wall
3.3ft
OC275-13
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
38-31/32
Unit center
1-15/32
1-17/32
5/32 3-15/16
7-3/32
12-{1/4 Hole for
tapping screw
9-7/16
on left-hand side
12-3/8
42-15/16
Drain hose
Air outlet
Liquid pipe
Refrigerant pipe. Drain pipe
9-1/4
9-7/16
B
4-1/32
4-3/8
Liquid pipe 3/8F
Gas pipe 5/8F
Terminal block for power supply
Gas pipe
Drain hose
Bolt
19/32
C
Knock out hole for right piping
Refrigerant pipe. Drain pipe
Emergency switch
MITSUBISHI
ELECTRIC
Power lamp
(Cool)
Right side
ON
POWER
ON
OFF
Receiving section
Display section
Terminal block for control
7-3/4
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
Bottom
9-1/4
1-25/32
Air intake
55-1/8
Front
1-25/32
9-1/4
Top
43-11/16
9-1/4
1-25/32
21-23/32 Air outlet
9-1/4
3-17/32 Rear piping opening
11-7/32
3/4
3-19/32
9-21/32
Drain hose for 31/32
left-hand side piping
Knock out hole for
left piping
Range for left rear piping opening
11-1/32
24
on right-hand side
17-29/32
10x3-19/32=(35-13/16)
35-7/16
Drainage range
23/32 Drainage range
2-9/16
2-29/32
C
1-3/16
A
Left side
13-3/8
13/32
1-3/16
1-5/32
5.1. Indoor Unit
PK18FL3
PK24FL3
1-3/18 7-1/4
1-3/16
3-5/32
11-1/32
2-15/32
1/2
6
2-3/8
01/12/14 3:06 PM
1-21/32
2-9/32
OC275--1.qxp
Page 13
OUTLINES AND DIMENSIONS
Unit : inch
1-15/32
3-27/32
B
41- 15/32 hole
for bolt
11-5/8
2-9/16
9-7/16
50
1-17/32
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
Rear piping hole
11-1/32
12-3/8
29-17/32
23-7/16
13x3-19/32=(7-3/16)
35-7/16
3-19/32
Unit center
1-15/32
C
1-3/16
2-29/32
2-9/16
1-15/32
Range for left
rear piping hole
8-27/32
23/32 23/32
Wall fixture
Unit out line
Drainage range on
Left hand side
1-17/32
2-29/32
84-{1/4 hole
for tapping
screw
3-15/16
5/32 1-17/32
Knock out hole for wiring
5/32 3-15/16
A
1-3/16
Left side
13-3/8
for tapping screw
12- 1/4 hole
7-17/32
9-1/4
1-25/32
9-1/4
1-25/32
1
7-7/32
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
Terminal block for power supply
Terminal block for control
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
2-5/32(Gas pipe)
4-23/32(Liquid pipe)
ON
(Cool)
Liquid pipe
Gas pipe
4-3/8
4-1/32
Bolt
C
1/2F
3/4F
3-1/2~
>
< 1 Sleeves are available
in the market.
3-1/2
4
Sleeve >< 1 Through hole
1
2
9-1/4
MITSUBISHI
ELECTRIC
Power lamp
Emergency switch
POWER
ON
OFF
Receiving section
Right side
19/32
or less
7-3/4
Display section
PK30FL3
PK36FL3
1-3/16
OC275-14
7-1/4
13/32
1-3/16
1-3/16
3-5/32
1-5/32
11-1/32
2-15/32
1/2
1-21/32
01/12/14 3:06 PM
2-3/8
2-9/32
OC275--1.qxp
Page 14
Unit : inch
OC275--1.qxp
01/12/14 3:06 PM
Page 15
Unit : inch
5.2. Remote controller
WIRELESS REMOTE CONTROLLER
2-9/32
COOL
DRY
AUTO
FAN
HEAT
CHECK TEST
MODEL RUN
SELECT
FAN
3/4
˚F
˚C
STOP AMPM
SWING
START AMPM
NOT AVAILABLE
TEMP
6-3/8
ON/OFF
7
REFRIGERANT SYSTEM DIAGRAM
PK18FL3
PK24FL3
PK30FL3
PK36FL3
Indoor unit
Indoor
heat
exchanger
Pipe temperature
thermistor / Liquid
(RT2)
Refrigerant flow
COOLING
Indoor unit
Refrigerant pipe
(Option)
{5/8
(with heat insulator)
Indoor
heat
exchanger
Pipe temperature
thermistor / Liquid
(RT2)
Refrigerant pipe
(Option)
{3/4
(with heat insulator)
Distributor
Distributor
Refrigerant pipe
(Option)
{3/8
(with heat insulator)
OC275-15
Refrigerant pipe
(Option)
{1/2
(with heat insulator)
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01/12/14 3:06 PM
8
Page 16
WIRING DIAGRAM
Indoor Unit
PK18/24/30/36FL3
TB2
(AC115V)
CNSK(RED)
MF
MV
(DC13.1V)
CN2S (WHT)
TRANS
3
2
1
6
FC
BZ
POWER
CNDK 1
(WHT)
F2
SW5
ON
OFF
1 2345
SW6 SW7
SW1
MODELS
ON
OFF
1234 56 123 4567 8910
18FL3
24FL3
ON
OFF
ON
OFF
123
30FL3
ON
OFF
123
1234
123
4
3
2
1
CENTRALLY REMOCON
CONTROL POWER
CN51
CN40
(WHT)
SW9
ON
OFF
12 345 6 1 234
POWER
CND 1 2
(RED) CN2D VANE
CN6V
F1
(WHT)(WHT)
ZNR
SW3
ON
OFF
ON
OFF
3
LED2
LED1
SW1
SW2
RU
DRAIN
CN31
(WHT)
123
PIPE
CN21
(WHT)
12
REMOCON
CN22
(BLU)
INTAKE
OUT
CN20 LOSSNAYDOOR
(RED)
CN2L CN30
(BLU)
12
W.R
REMOTE
CONTROLLER
9
LED1 LED2 WIRELESS
CN90
(WHT)
X4
12
SW8
BLK
WHT
RED
BLU
BLK
WHT
13
X4
SW7
W.B
CNB
135
SW2
POWER SUPPLY
~(1PHASE)
AC115V 60Hz
L1
N
GR
GROUND
6
RED
WHT
BLK
FAN
(WHT)
P.B
2
1
C
I.B
RED
BLU
GRN/YLW
2
1
3
2
1
ORN
YLW
2
1
TB4
TRANSMISSION WIRES DC12V 2
1
TB3
OUTDOOR UNIT
36FL3
ON
OFF
123
123
RT2 RT1
[LEGEND]
SYMBOL
NAME
P.B
INDOOR POWER BOARD
I.B
INDOOR CONTROLLER BOARD
CN2L CONNECTOR(LOSSNAY)
CN51 CONNECTOR(CENTRALLY CONTROL)
FAN PHASE CONTROL
FC
SW1 SWITCH(FUNCTION SELECTOR)
SW2 SWITCH(ADDRESS SELECTOR)
SW3 SWITCH(EMERGENCY OPERATION)
SW5 SWITCH(MODEL SELECTOR)
SW6 SWITCH(TWIN/TRIPLE SELECTOR)
SW7 SWITCH(MODEL SELECTOR)
SW8 SWITCH(OPTION)
SW9 SWITCH(MODEL SELECTOR)
X4
RELAY(FAN MOTOR)
F1,F2 FUSE(6A/250V)
ZNR VARISTOR
LED1 LED(DC12V POWER)
LED2 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)
W.R
WIRELESS REMOTE CONTROLLER
W.B
REMOTE CONTROLLER BOARD
RU
RECEIVING UNIT
BUZZER
BZ
LED1 LED(RUN INDICATOR)
SW2 SWITCH(COOLING ON/OFF)
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.
(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.
OC275-16
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01/12/14 3:06 PM
9
Page 17
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.)
OC275-17
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01/12/14 3:06 PM
Page 18
COOLING OPERATION
COOL operation
NO
Initial
COOLING
YES
w8
Vane initial
setting
Vane
55 deg downward angle
70 deg downward angle
NO
NO
NO
Vane setting notch
YES
Fan speed
LOW
YES
Downward
discharge
1 hour
YES
Vane horizontal
airflow
w9
Compressor
thermostat
ON NO
Allowance
cancel
NO YES
YES
3-minute
time delay
YES
NO
6-minute
time delay
NO
NO
3-minute
compressor
operation
Allowance
period
NO
6 minute
time delay
NO
YES
NO
YES
10-minute
compressor
operation
YES
Allowance cancel
Coil frost
prevention
NO
16-minute
compressor
operation
YES
Indoor pipe
temperature is
34˚F or lower
NO
Compressor ON
Coil frost protection
Allowance set
YES
w 10
Coil frost
protection
NO
w 11
Cooling area
NO
YES
Indoor coil
temperature is
50˚F or higher
NO
YES
Defrosting
NO
protection detection
temperature 30˚F
or lower
YES
YES
6-minute
time delay
3-minute
time delay
NO
1 min.
continue
YES
FAN speed
LOW
FAN speed
LOW 5 min.
elapse
NO
YES
Outdoor unit
trouble
YES
Coil frost
prevention release
Coil frost
prevention
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.
OC275-18
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01/12/14 3:06 PM
Page 19
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 OC275-18.
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 OC275-24.
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
OC275-19
OC275--1.qxp
10
01/12/14 3:06 PM
Page 20
MICROPROCESSOR CONTROL
1. OUTLINE OF MICROPROCESSOR CONTROL
REMOTE CONTROLLER
INPUT to remote controller
● Processes and transmits orders.
OUTPUT to remote controller
● Indication LCD lights.
● OFF-ON switching.
● COOL • DRY • FAN selector switching.
● HIGH-LOW fan speed switching.
● TIMER mode selector-switching
● Timer setting.
● Self diagnostic troubleshooting.
● TEST RUN switching.
● CHECK mode switching.
● AUTO Vane setting.
COOL
DRY
AUTO
FAN
HEAT
CHECK TEST
MODEL RUN
SELECT
FAN
˚F
˚C
STOP AMPM
SWING
START AMPM
NOT AVAILABLE
ON/OFF
TEMP
Indoor unit
INPUT from indoor unit
INDOOR CONTROLLER BOARD
● Room temperature thermistor.
● Indoor coil thermistor.
● Receives orders from remote controller and temperature
data from indoor unit.
● Processes orders and data.
● Controls indoor and outdoor operation.
● Self diagnostic function
w System control operation.<Optional>
w Emergency operation
OUTPUT to indoor unit
● Fan: ON-OFF.
● Fan speed: HIGH-LOW.
● AUTO vane’s angle setting.
● Emergency stop.
polar, two (2) - core cable
INPUT from outdoor unit
12VDC
Independent Control of
Outdoor Unit
OUTPUT CONTROLLER
BOARD
● Compressor protection device working.
● Receives orders from
indoor controller.
● Emergency stop.
OUTPUT to outdoor unit
● Compressor motor and outdoor fan motor : ON-OFF.
OC275-20
Outdoor unit
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01/12/14 3:06 PM
Page 21
2. INDOOR UNIT CONTROL
2-1COOL operation
COOL
<How to operate>
1 Press POWER ON/OFF button.
2 Press MODE button to set operation mode to COOL.
3 Set desired temperature with
or
button.
NOTE: 1. Set temperature changes by 2 °F in the range 65~87 °F
each TEMP
or
button is pressed.
2. Set temperature is displayed on the LCD.
˚F
FAN
AM
ON/OFF
TEMP
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
h
TEST RUN
SET
min
RESET
CLOCK
<COOL 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
LOW or HIGH
ON
Indoor fan
LOW or HIGH
OFF
Depends on remote controller setting
ON
Auto vane
OFF
Compressor
OFF
CLOSE
CLOSE
ON
MIN. 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.
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Page 22
(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.
OC275-22
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.
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Page 23
(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.
( i ) Every time AIR DISCHARGE button is pressed, setting will be changed .
( ii ) Airflow direction can be changed with AIR DISCHARGE button.
1 Fan speed : LOW
10°
60°
70°
SWING
60°
70°
SWING
2 Fan speed : HIGH
10°
30°
<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
Changes by pressing the AIR DISCHARGE button.
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Page 24
2-2 DRY operation
<How to operate>
1 Press POWER ON/OFF button.
2 Press MODE button to set operation mode to DRY.
3 Set desired temperature with
or
button.
NOTE: 1. Set temperature changes by 2 °F in the range 65~87 °F
each TEMP
or
button is pressed.
2. Set temperature is displayed on the LCD.
˚F
DRY
FAN
AM
ON/OFF
MODE
TEMP
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
h
TEST RUN
SET
min
RESET
CLOCK
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
LOW speed
ON
Indoor fan
OFF
Depends on remote controller setting
ON
Auto vane
LOW speed
OFF
CLOSE
CLOSE
ON
Compressor
OFF
MIN. 3 minutes w2
w2 Even if the room temperature rises above the set temperature during this period, the compressor will not start until this period has ended.
(1)Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode or during protective functions.
4 The compressor will not start when the room temperature is below 63 °F. The compressor starts intermittent operation when
the power is turned ON with room temperature above 63 °F. The compressor ON/OFF time depends on the thermostat
ON/OFF and the room temperature as follows.
After 3-minute compressor operation,
● If the room temperature thermistor reads above 83 °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 83 °F with thermostat 0N, 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.
5 Coil frost protection
Coil frost protection in DRY operation is the same as in COOL operation.
6 Coil freeze prevention
Coil freeze prevention does not operate in DRY operation.
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Page 25
(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.
OC275-25
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Page 26
2-3 FAN operation
FAN
FAN
AM
ON/OFF
TEMP
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
h
TEST RUN
SET
<How to operate>
1 Press POWER ON/OFF button.
2 Press MODE button to set operation mode to FAN.
(1) Indoor fan control
The indoor fan speed depends on the remote controller setting.
(2) Auto vane control
The auto vane position depends on the remote controller setting.
min
RESET
CLOCK
2-4 TIMER operation
COOL
˚F
STOP
FAN
PM
<How to operate>
1 Push POWER ON/OFF button.
2 Check if or not the current time is correct.
3 Push the
or
button and select the desired time.
4 Set the timer time using HR and MIN buttons.
SWING
START AM
ON/OFF
MODE
TEMP
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
TEST RUN
SET
h
min
RESET
CLOCK
OC275-26
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Page 27
2-5 Test run
Test run
Measure an impedance between the power supply terminal block on
the outdoor unit and ground with a 500V Megger and check that it is
A
TEST
RUN
COOL
FAN
ON/OFF
TEMP
6
MODE
3
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
TEST RUN
min
2
SET
h
RESET
CLOCK
4
5
equal to or greater than 1.0M".
1 Turn on the main power to the unit.
TEST RUN
2 Press the
button twice continuously.
(Start this operation from the status of remote controller display
turned off.)
TEST RUN
A
and current operation mode are displayed.
MODE
3 Press the
(
) button to activate COOL mode, then
check whether cool air is blown out from the unit.
FAN
4 Press the
button and check whether strong air is blown out
from the unit.
VANE
5 Press the
button and check whether the auto vane operates
properly.
6 Press the ON/OFF button to stop the test run.
Note:
• Point the remote controller towards the indoor unit receiver
while following steps 2 to 6.
• It is not possible to run the in FAN, DRY or AUTO mode.
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Page 28
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
2
SW3
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.
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Page 29
2-7 Dip switch functions
Each figure shows the initial factory setting.
1. 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
SW2-1~6) Not for use.
(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.
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Page 30
(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
PK18FL3
ON
OFF
PK24FL3
ON
OFF
1 2 3
PK30FL3
ON
OFF
1 2 3
PK36FL3
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
SW9-1~5) Keep this switch.
OC275-30
1 2 3
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Page 31
2-8 Wireless remote controller pair number setting operation
A
MODEL SELECT
Model No.
TEMP
ON/OFF
4
MODE
1 Turn on the main power to the unit.
2 Press the SET button with the point of a ball-point pen or the like.
Start this operation from the status of remote controller display turned off.
MODEL SELECT blinks and Model No. is lighted.
min
3 Press the
button twice continuously.
A Pair No. “0” blinks.
4 Press the temp
button to set the pair number you want to set.
5 Press the SET button with the point of a ball-point pen or the like.
Set pair number is lighted for three seconds then turned off.
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
TEST RUN
A Pair No. of wireless
remote controller
Indoor PC board
0
Factory setting
1
Cut J41
h
2
Cut J42
min
3~9
3
2,5
SET
RESET
CLOCK
OC275-31
Cut J41, J42
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Page 32
TROUBLESHOOTING
1. Self-diagnostic function
A
Self-check
B
1 Turn on the main power to the unit.
CHECK
2 Press the
button twice continuously.
(Start this operation from the status of remote controller display
turned off.)
A CHECK begins to light.
B “00” begins to blink.
3 While pointing the remote controller toward the unit’s receiver,
h
press the
button. The check code will be indicated by the
number of times that the buzzer sounds from the receiver section
and the number of blinks of the operation lamp.
4 Press the ON/OFF button to stop the self-check.
TEMP
ON/OFF
4
MODE
FAN
AUTO STOP
VANE
AUTO START
CHECK LOUVER
Check Code
h
3
2
min
TEST RUN
SET
RESET
CLOCK
Alarm
Buzzer sound
1
Suction sensor alarm
Single beep O 1
2
Pipe sensor alarm
Single beep O 2
3
Transmission alarm
Single beep O 3
5
Drain sensor alarm
Single beep O 4
4
Drain pump alarm
Single beep O 5
6
Anti-freezing on
Single beep O 6
Anti-overheat on
Single beep O 6
7
System error
Single beep O 7
8
Outdoor unit alarm
Single beep O 8
9
No alarm (no error)
Receiving signal only
(no error alarm)
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Page 33
2. OTHER TROUBLES AND CAUSES
Auto vanes do not work.
Unit stops after 5 to
20 seconds operation
Power ON/OFF button
is not available.
Auto vane motor is damaged.
Auto vane motor does not work.
Auto vane motor relay is damaged.
Connector is poorly connected.
Auto vane motor is poorly assembled.
Indoor controller board is damaged.
Protection function is working.
Refer to check code on remote controller display.
Indoor/outdoor connecting wire is connected
incorrectly.
Indoor/outdoor connecting wire shorts.
Compressor protector is damaged.
Defroster is broken.
Remote controller is damaged.
Transmission wire is poorly connected
Check
Diagnosis of malfunction
Cause
code
Abnormality of room temper- 1) Bad contact of thermistor
1
ature thermistor (RT1)
2) Damaged thermistor
Transmission wire is damaged.
Connector is poorly connected.
Check points
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.
2
Abnormality of indoor coil
thermistor (RT2)
4
Abnormality of drain sensor
1) Bad contact of transmission
wire
2) Damaged thermistor
1) Check the connector.
2) Measure the resistance of the thermistor
(between ➃ - ➄of CN50).
As for the normal resistance, refer to the case
of 1.
If the resistance is normal, replace the indoor controller board.
5
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 drain sensor heater. Normal resistance should be 82Ω. (between 1 - 3of
CN50).
If the resistance is normal, replace the indoor controller board.
6
Coil frost protection is working.
1) Short cycle of air cycle
2) Dirty air filter
3) Damaged fan
4) Abnormal refrigerant
1)
2)
3)
4)
Clear obstructions from the air cycle.
Clean the air filter
Check the fan.
Check the refrigerant temperature.
8
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.
❈ The number of check code shows times of Buzzer sound.
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Page 34
3. WRONG WIRING ON SITE
Symptom due to wrong wiring between indoor and outdoor units
Wrong wiring
Indoor unit
1
Thermostat
Outdoor unit
1
2
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.
4. 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)
Fan motor (MF)
Measure the resistance between the terminals using a tester.
Normal
4.3k' to 9.6k'
Abnormal
Open or short
Relay connector
1
Red
1
3 White
5
Black
3
5
Protector
Red-White
White-Black
Red
M
Blue
Brown
Pink
Yellow
18,24FL3
99.5'i10%
103.5'i10%
Abnormal
30,36FL3
62.6'i10%
74.0'i10%
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F to 86°F)
Orange
Connector
Normal
PK
Opening and closing temperature of protector.
Open: 266i41°F (Fan motor OFF)
Close: 176i68°F (Fan motor ON)
Vane motor (MV)
4
5
2
Motor terminal
or
Relay connector
3 6 1
Brown-Yellow
Brown-Blue
Red-Orange
Red-Pink
Normal
Abnormal
186 to 214'
Open or short
OC275-34
Open or short
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Page 35
DISASSEMBLY PROCEDURE
Indoor unit PK24FL3
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.
OC275-35
Photo 1
Indoor controller
board
Electrical box
cover
Catches
Photo 2
Room temperature thermistor
Pipe temperature thermistor
Screws
Electrical box
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Page 36
OPERATING PROCEDURE
PHOTOS&ILLUSTRATION
(8) 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.
Photo 3
RELAY
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
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Page 37
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
Screws
Fan motor
Motor fixture
Photo 9
Fan motor
Screw
Screw
Motor support
Motor
support
Photo 10
Line flow fan
Center support
Screw
Photo 11
Heat exchanger
Bearing support
Line flow fan
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13
Page 38
PARTS LIST
ELECTRICAL PARTS
PK18FL3
PK24FL3
PK30FL3
PK36FL3
1
28
2
27
3
24
23
26
22
25
4
5
20
21
19
6
7
18
13
14
11 12
8
9
10
15
Q'ty / set
Parts No.
1
R01 005 103
SLEEVE BEARING
1
1
1
1
2
R01 Z61 102
BEARING MOUNT
1
1
1
1
R01 13G 114
LINE FLOW FAN (L)
1
1
R01 17G 114
LINE FLOW FAN (L)
1
1
T7W B04 480
HEAT EXCHANGER
T7W B06 480
HEAT EXCHANGER
T7W B05 480
HEAT EXCHANGER
1
1
T7W E13 529
DRAIN PAN
T7W E14 529
DRAIN PAN
1
1
R01 12G 063
JOINT SHAFT
1
1
3
4
5
6
Specifications
17
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
18FL3 24FL3 30FL3 36FL3
PK
No.
Parts Name
16
1
1
1
1
OC275-38
1
1
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Page 39
Q'ty / set
No.
7
8
Parts No.
Parts Name
Specifications
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
18FL3 24FL3 30FL3 36FL3
PK
R01 12G 621 CENTER COVER
1
1
R01 12G 002 AUTO VANE W
2
2
R01 16G 002 AUTO VANE W
9
R01 KV5 527 DRAIN HOSE
1
1
2
2
1
1
1
1
10 R01 12G 223 VANE MOTOR
1
1
1
1
MV
11 T7W E12 202 ROOM TEMPERATURE THERMISTOR
1
1
1
1
RT1
12 R01 E02 202 PIPE TEMPERATURE THERMISTOR
1
1
1
1
RT2
13 R01 556 246 TERMINAL BLOCK
2P(1,2)
1
1
1
1
TB4
14 T7W 410 716 TERMINAL BLOCK
3P(L1,N,GR)
1
1
1
1
TB2
15 T7W B02 255 FAN MOTOR 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
1
1
16 T7W E25 310 INDOOR CONTROLLER BOARD
17 T7W 410 239 FUSE
250V 6A
18 T7W E02 313 POWER BOARD
19
R01 12G 105 RUBBER MOUNT
R01 16G 105 RUBBER MOUNT
20
R01 13G 115 LINE FLOW FAN (R)
1
1
R01 17G 115 LINE FLOW FAN (R)
21
T7W B02 762 FAN MOTOR
PN4W40-K
T7W B03 762 FAN MOTOR
PN4W70-K
1
MF
1
1
1
22 R01 E00 075 WIRELESS REMOTE CONTROLLER HOLDER
1
1
1
1
23 T7W E07 714 WIRELESS REMOTE CONTROLLER
1
1
1
1
24 R01 E01 049 REMOTE CONTROLLER DOOR
1
1
1
1
25 R01 12G 103 SLEEVE BEARING
1
1
1
1
26 R01 KV5 102 BEARING MOUNT
1
1
1
1
2
2
27 T7W B03 675 FAN GUARD
28 T7W B02 675 FAN GUARD
2
OC275-39
2
MF
W.R
OC275--2.qxp
01/12/14 3:08 PM
Page 40
STRUCTURAL PARTS
PK18FL3
PK24FL3 1
PK30FL3
PK36FL3
11
10
8
9
2
3
8
7
4
6
5
Part number that is circled is not shown in the figure.
Q'ty / set
No.
1
2
3
Parts No.
Parts Name
Specifications
Wiring
Remarks
Diagram
(Drawing No.)
Symbol
18FL3 24FL3 30FL3 36FL3
PK
R01 12G 662 SIDE PANEL (L) W
1
1
R01 E01 812 UNDER PLATE
1
1
R01 E00 812 UNDER PLATE
R01 E00 811 NOSE
1
1
1
1
1
1
1
1
R01 E01 811 NOSE
4
R01 A17 500 FILTER
4
4
5
5
5
R01 50J 317 W.A. CONT (A)
1
1
1
1
W.B
6
R01 24K 658 RECEIVER
1
1
1
1
RU<W.B>
7
T7W E00 661 SIDE PANEL (R)
1
1
1
1
8
R01 12G 691 INTAKE GRILLE W
2
2
2
2
9
R01 16G 692 INTAKE GRILLE W
1
1
1
1
1
1
1
1
1
1
10
11
R01 12G 808 BACK PLATE
R01 16G 808 BACK PLATE
1
R01 E01 641 TOP PLATE
1
R01 E00 641 TOP PLATE
1
12 R01 12G 523 DRAIN SOCKET
OC275-40
1
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.
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.