Mitsubishi Electronics PKH30FL, PKH36FL, PKH18FL, PKH24FL User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TM

A

I

R

S

T

A

N

D

A

R

D

2

4

0

•

M

A

N

U

F

A

C

T

U

R

E

R

C

E

R

T

I

F

I

E

D

T

O

A

R

I

A

S

C

O

M

P

L

Y

I

N

G

W

I

T

H

•

C

E

R

T

I

F

I

C

A

T

I

O

N

S

E

C

T

I

O

N

S

O

F

E

Q

U

I

P

M

E

N

T

A

I

R

-

C

O

N

D

I

T

I

O

N

I

N

G

U

N

I

T

A

R

Y

L

I

S

T

E

D

CUS

MODEL SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST RUN

˚F ˚C

AMPMSTOP

START

TECHNICAL & SERVICE MANUAL

No. OC276

REVISED EDITION-A

Series PKH

[Models]

PKH18FL PKH24FL PKH30FL PKH36FL

Wall Mounted

Indoor unit

Revision:

●The wrong descriptions in REFRIGERANT SYSTEM DIAGRAM have been modified. (Page 18.)

●The wrong descriptions in WIRING DIAGRAM have been modified. (Page 19.)

●Restrictor valve and capillary tube have been added to "Specifications" of heat exchanger. (Page 48.)

●Please void OC276.

CONTENTS

1. FEATURES ·······························································2

2. PART NAMES AND FUNCTIONS····························3

3. SPECIFICATIONS·····················································4

4. DATA·········································································5

5. OUTLINES AND DIMENSIONS······························16

6. REFRIGERANT SYSTEM DIAGRAM ····················18

7. WIRING DIAGRAM·················································19

8. OPERATION FLOW-CHART··································20

9. MICROPROCESSOR CONTROL···························24

10. TROUBLESHOOTING············································41

11. DISASSEMBLY PROCEDURE ·······························45

12. PARTS LIST····························································48

Remote controller

1

MODEL SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST RUN

˚F ˚C

AMPMSTOP

START

FEATURES

Indoor unit

Remote controller

Models Cooling capacity / Heating capacity SEER

PKH18FL 18,000 / 18,600 [25,100] Btu/h 11.1 PKH24FL 24,000 / 25,000 [31,500] Btu/h 10.2 PKH30FL 30,000 / 33,000 [40,500] Btu/h 10.6 PKH36FL 34,200 / 38,000 [45,500] Btu/h 10.5

1. COMPACT DESIGN

The PKH 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. PKH18/24/30/36FL 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.

2

PART NAMES AND FUNCTIONS2

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST

RUN

˚F ˚C

AMPMSTOP

START

AMPM

COOL

DRY

AUTO

FAN

HEAT

VANE CONTROL button

Used to change the air flow direction.

CLOCK button

RESET button

SET button

ON/OFF button

The unit is turned ON and OFF alternately each time the button is pressed.

LOUVER button

This switch the horizontal fan motion ON and OFF.

(Not available for this model.)

MODE SELECT button

Used to switch the operation mode between cooling, drying, fan.

CHECK-TEST RUN button

Only press this button to perform an inspection check or test operation. Do not use it for normal operation.

FAN SPEED SELECT button

Used to change the fan speed.

TIMER display

Displays when in timer operation or when setting timer.

button

SET TEMPERATURE button sets any desired room temperature.

CLOCK display

Displays the current time.

“ ” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

Buttons used to set the “hour and minute” of the current time and timer settings.

h and min buttons

88°F display

SET TEMP. display indicates desired temperature set.

display

FAN SPEED display indicates which fan speed has been selected.

display

The vertical direction of air flow is indicated.

display

Blinks when model is selected.

display

Lights up while transmission to the indoor unit is mode using switches.

display

CHECK&TEST RUN display indicates that the unit is being checked or test-run.

OPERATION MODE display

OPERATION MODE display Operation mode display indicates which operation mode is in effect.

TIMER CONTROL buttons

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

MODEL SELECT

CHECK

TEST RUN

●Wireless remote controller

● When cover is open.

3

3 SPECIFICATIONS

FK1:48 -41

Capacity

Moisture removal Power

Consumption EER

SEER HSPF

COP

INDOOR UNIT MODELS

External finish Power supply Max.fuse size (time delay) Min.ampacity Fan motor Booster heater

Airflow Hi-Lo Sound level Hi-Lo

Unit drain pipe O.D.

Dimensions

Weight OUTDOOR UNIT MODELS External finish Power supply Max.fuse size (time delay) Min.ampacity Fan motor

Compressor

Crankcase heater Refrigerant control Defrost method Sound level

Dimensions

Weight REMOTE CONTROLLER Control voltage (by built-in transformer)

REFRIGERANT

REFRIGERANT PIPING Pipe size Connection

method Between the indoor & outdoor units

Cooling *1 Heating *1 Heating *2

Cooling *1 Heating *1 Heating *2 *1

*1 *2

Dry Wet

W D H

Model (type)

W D H

Name Charge Oil <Model>

Liquid Gas Indoors Outdoors Height difference Piping length

Btu/h Btu/h Btu/h

Pints/h

kW kW kW

V,phase,Hz

A A

F.L.A.

A(kW

) CFM CFM

dB

in. in. in. in.

lb

V,phase,Hz

A A

F.L.A.

R.L.A. L.R.A.

A(W

)

dB

in. in. in.

lb

L

in. in.

ft ft

PKH18FL

Model

18,000

18,600[24,100/25,100

]

10,700[16,200/17,200

]

5.3

1.79

1.56[3.16/3.46

]

1.34[2.94/3.24

]

10.1

11.1

7.2

3.5

2.3

PKH18FL

57

PUH18EK

20 16

0.75

RH247NAB

12 37

0.11/0.12[23/28

]

53

33-1/2

131

5 lbs 8 oz

0.52 <MS-56>

130 130

PKH24FL

24,000

25,000[30,500/31,500

]

14,700[20,200/21,200

]

7.0

2.36

2.37[3.97/4.27

]

1.92[3.52/3.82

]

10.2

6.8

3.1

2.2

PKH24FL

Munsell 3.4Y 7.7/0.8

208/230,1,60

57

PUH24EK

1

Munsell 5Y 7/1

208/230,1,60

20 16

0.65+0.65

NH33NBD

11.5 54

0.16/0.17[33/39

]

Capillary tube

Reverse cycle

55

49-9/16

202

With indoor unit

Indoor unit-remote controller:DC12V. Indoor unit-outdoor unit:DC12V

R22

9 lbs 15 oz

1.2 <MS32N-1>

Not supplied(optional parts)

Flared Flared

9-1/4

13-3/8

PKH30FL

30,000

33,000[39,100/40,500

]

19,000[25,100/26,500

]

9.1

3.12

3.02[4.82/5.22

]

2.48[4.28/4.68

]

9.6

10.6

7.1

3.2

2.2

PKH30FL

FK

1:49-44

66

PUH30EK

1

30 20

0.75+0.75

NH41NAD

14.0 73

0.16/0.17[33/39

]

55

38-3/16 13-9/16 49-9/16

245

10 lbs 2 oz

1.3 <MS32N-1>

1/2 3/4

PKH36FL

34,200

38,000[44,100/45,500

]

19,600[25,700/27,100

]

10.5

3.44

3.54[5.34/5.74

]

2.65[4.45/4.85

]

9.9

10.5

6.9

3.1

2.2

PKH36FL

FK

1:50-46

66

PUH36EK

1

30 22

0.75+0.75

NH47NAD

17.5 87

0.16/0.17[33/39

]

55

38-3/16 13-9/16 49-9/16

246

10 lbs 9 oz

1/2 3/4

164 164

Item

34-1/4 11-5/8

3/8 5/8

164 164

55-1/8 66-5/32

NOTES : *1.Rating conditions (cooling)-indoor : 80˚FDB,67˚FWB outdoor : 95˚FDB,75˚FWB. (heating)-indoor : 70˚FDB,60˚FWB outdoor : 47˚FDB,43˚FWB. *2.Rating conditions (heating)-indoor : 70˚FDB,60˚FWB outdoor : 17˚FDB,15˚FWB. *3.Heating capacity and power consumption in [ ] includes heater operation at 208/230V.

Operating range

Indoor intake air temperature

95˚FDB,71˚FWB 67˚FDB,57˚FWB 80˚FDB,67˚FWB 70˚FDB,60˚FWB

Outdoor intake air temperature

115˚FDB

0˚FDB * 75˚FDB,65˚FWB 17˚FDB,15˚FWB

Cooling

Heating

Maximum

Minimum

Maximum

Minimum

1-1/16 (or 7/8)

15

12 13

0.5

0.6

7.6/8.4[1.6/1.9

]

710-530 640-480

8.7/9.6[1.8/2.2

] 990-780 890-700

*

In case of the wind baffle is installed. (In case of the wind baffle is not installed, the minimum temperature will be 23˚FDB.)

MODELS : PKH18FL, PKH24FL, PKH30FL, PKH36FL

4

Models

Models Outdoor intake air DB temperature(˚F

)

PKH18FL

71 67 63

62.5 60 59 71 67 63

62.5 60 59

TC

21.0

19.5

18.2

18.1

17.2

16.8

27.9

26.1

24.3

24.1

23.0

22.5

34.9

32.6

30.4

30.2

28.8

28.2

39.8

37.1

34.7

34.4

32.8

32.2

SHC

14.4

16.0

17.4

15.5

15.1

14.5

16.1

18.5

20.5

18.0

17.6

17.0

21.5

24.5

26.9

23.8

23.2

22.4

23.0

26.3

29.3

25.8

25.1

24.3

TPC

1.56

1.52

1.49

1.47

1.46

2.05

2.01

1.97

1.96

1.94

1.93

2.72

2.66

2.60

2.59

2.57

2.56

3.00

2.93

2.87

2.86

2.82

2.81

TC

20.2

18.8

17.5

17.4

16.6

16.2

26.9

25.1

23.4

23.2

22.1

21.7

33.7

31.4

29.2

29.0

27.6

27.0

38.4

35.7

33.3

33.1

31.5

30.8

SHC

13.9

15.4

16.7

14.9

14.5

14.0

15.5

17.8

19.7

17.4

16.9

16.4

20.8

23.6

25.8

22.9

22.2

21.5

22.1

25.3

28.1

24.8

24.1

23.2

TPC

1.69

1.65

1.61

1.58

1.57

2.23

2.18

2.12

2.09

2.07

2.95

2.88

2.81

2.80

2.77

2.76

3.25

3.17

3.10

3.09

3.04

3.03

TC

19.4

18.0

16.8

16.6

15.8

15.5

25.8

24.0

22.4

22.2

21.1

20.7

32.3

30.0

27.9

27.7

26.3

25.7

36.8

34.2

31.9

31.6

30.1

29.5

SHC

13.3

14.8

16.0

14.3

13.8

13.4

14.9

17.0

18.9

16.6

16.2

15.6

19.9

22.5

24.6

21.9

21.2

20.4

21.2

24.3

26.9

23.7

23.0

22.3

TPC

1.84

1.79

1.74

1.70

1.69

2.43

2.36

2.30

2.29

2.25

2.24

3.21

3.12

3.04

3.03

2.99

2.98

3.54

3.44

3.35

3.34

3.28

3.26

TC

18.5

17.1

15.9

15.8

15.0

14.6

24.6

22.9

21.3

21.1

20.1

19.7

30.8

28.6

26.6

26.3

24.9

24.4

35.1

32.6

30.3

30.0

28.5

27.9

SHC

12.7

14.0

15.2

13.6

13.1

12.6

14.2

16.3

18.0

15.8

15.4

14.9

19.0

21.5

23.5

20.7

20.1

19.4

20.2

23.1

25.6

22.5

21.8

21.0

TPC

1.99

1.93

1.88

1.87

1.84

1.83

2.63

2.55

2.47

2.41

2.39

3.48

3.37

3.27

3.26

3.21

3.19

3.83

3.71

3.61

3.59

3.52

3.50

TC

17.6

16.3

15.1

15.0

14.2

13.9

23.4

21.7

20.1

19.9

18.9

18.5

29.3

27.1

25.1

24.9

23.5

22.9

33.4

30.9

28.7

28.4

26.9

26.4

SHC

12.1

13.4

14.4

12.9

12.4

12.0

13.5

15.4

17.0

14.9

14.5

14.0

18.1

20.3

22.2

19.6

18.9

18.2

19.3

21.9

24.2

21.3

20.6

19.9

TPC

2.15

2.07

2.01

2.00

1.96

1.94

2.84

2.73

2.65

2.64

2.58

2.56

3.75

3.61

3.50

3.49

3.43

3.41

4.13

3.98

3.86

3.85

3.76

3.73

IWB

(˚F)

DB 75°F (50%RH) DB 72°F (50%RH) DB 70°F (50%RH)

75 85 95 105 115

710

0.16

Airflow (

CFM

)

B.F

PKH24FL

710

0.16

PKH30FL

990

0.15

PKH36FL

990

0.14

Notes 1. B.F. : Bypass Factor, IWB : Intake air wet-bulb temperature TC : Total Capacity (x10

3

Btu/h), SHC : Sensible Heat Capacity (x10

3

Btu/h)

TPC : Total Power Consumption (kW)

2. SHC is based on 80˚FDB of indoor intake air temperature.

3. Cooling capacity correction factors and Refrigerant piping length (one way) range.

MODEL

Refrigerant piping length (one way)

1.0

25ft

0.992

0.981

40ft

0.983

0.968

55ft

0.978

0.952

70ft

0.966

0.940

85ft

0.959

0.925

100ft

0.950

0.913

115ft

0.945

0.900

130ft

0.886

150ft

0.874

164ft

PKH18FL

PKH24FL PKH30FL PKH36FL

DATA

MODELS : PKH18FL, PKH24FL, PKH30FL, PKH36FL

1. PERFORMANCE DATA

1) COOLING CAPACITY

5

2) HEATING CAPACITY

Models Outdoor intake air WB temperature(˚F

Models

Airflow (CFM)

IWB

(˚F)

75

15 25 35 45 55 65

CA

PC

CA

PC

CA

PC

CA

PC

CA

PC

12.1

1.20

14.1

1.34

16.3

1.49

18.7

1.65

21.4

1.83

)

CA

23.7

Auxiliary heater

PC

1.99

CA

5.5

208V 230V

PC

1.6

PKH18FL

PKH24FL

PKH30FL

PKH36FL

Notes 1. IDB : Intake air dry-bulb temperature CA : Capacity (x10

2. When booster heater is "on", total capacity and total power consumption should be added the figures described in booster heater column.

•Booster heater ON : When the set temperature is higher than the room temperature by more than 5.4 deg.

•Booster heater OFF : When the set temperature is higher than the room temperature by less than 3.6 deg.

3. Heating capacity correction factors.

710

990

70

12.4

1.16

14.4

1.29

65

12.7

1.11

14.7

1.24

75

16.3

1.82

18.9

2.03

70

16.6

1.76

19.4

1.96

65

17.0

1.69

19.8

1.89

75

21.5

2.32

25.0

2.59

70

21.9

2.24

25.5

2.50

65

22.5

2.15

26.1

2.40

75

24.7

2.71

28.7

3.04

70

25.3

2.62

29.4

2.93

65

25.9

2.53

30.1

2.82

3

Btu/h), PC : Power Consumption (kW)

16.7

17.0

21.9

22.4

22.9

28.9

29.6

30.2

33.3

34.1

34.8

1.44

1.38

2.27

2.19

2.10

2.89

2.78

2.68

3.39

3.26

3.14

19.1

19.5

25.2

25.7

26.2

33.2

33.9

34.6

38.2

39.0

39.9

1.59

1.53

2.51

2.42

2.32

3.20

3.08

2.96

3.75

3.61

3.47

21.8

22.2

28.8

29.3

29.9

38.0

38.6

39.4

43.7

44.5

45.4

1.76

1.69

2.77

2.67

2.56

3.53

3.40

3.26

4.14

3.98

3.83

24.1

24.5

32.8

33.3

33.9

43.2

43.7

44.6

49.6

50.4

51.3

1.91

1.83

3.01

2.90

2.78

3.86

3.72

3.56

4.49

4.28

4.14

6.5

5.5

6.5

6.1

7.5

6.1

7.5

1.9

1.6

1.9

1.8

2.2

1.8

2.2

Models

PKH18FL PKH24FL

PKH30FL

PKH36FL

Refrigerant piping length (one way)

Less than 100ft

1.00

100~130ft

0.995

130~164ft

0.990

6

2. PERFORMANCE CURVE

Does not include booster heater (1.9kW)

Total power consumption (kW) Total capacity (x10

3

Btu/h)

30

24

18

12

2.5

2.0

1.5

1.0

15 25 35 45 55 65

Total power consumption (kW) Total capacity (x10

3

Btu/h)

Outdoor intake air DB temperature ( F) Outdoor intake air WB temperature ( F)

Indoor intake air DB temperature ( F)

65

70

75

30

24

18

12

2.5

2.0

1.5

1.0

63

67

71

63

67

71

SHF=0.82

023 32 35

45 55

65

(67)

75 85 95 105 115

Indoor intake air WB temperature ( F)

NOTES : Apoint on the curve shows the reference point.

COOLING CAPACITY HEATING CAPACITY

Btu/h)

3

3.0

2.5

2.0

1.5

Total power consumption (kW) Total capacity (x10

COOLING CAPACITY HEATING CAPACITY

36

30

24

Indoor intake air WB temperature ( F)

18

12

023 32 35

Indoor intake air WB temperature ( F)

45 55

Outdoor intake air DB temperature ( F)

(67)

65

75 85 95 105 115

SHF=0.71

35

71 67 63

Indoor intake air DB temperature ( F)

Btu/h)

3

30

24

18

12

3.0

2.5

2.0

1.5

Total power consumption (kW) Total capacity (x10

15 25 35 45 55 65

Does not include booster heater (1.9kW)

Indoor intake air DB temperature ( F)

Outdoor intake air WB temperature ( F)

7

65 70 75

75 70 65

NOTES : Apoint on the curve shows the reference point.

71 67 63

42

36

30

24

4.0

3.5

3.0

2.5

2.0

SHF=0.75

Total capacity(x10 Btu/h)

3

Total power consumption(kW)

Outdoor intake air DB temperature(°F)

0 23 32 35 45 55 65 (67) 75 85 95 105 115

indoor intake air WB temperature(°F)

48 42 36 30 24 18

4.0

3.5

3.0

2.5

2.0

1.5 15 25 35 45 55 65

Outdoor intake air WB temperature(°F)

indoor intake air DB temperature(°F)

Does not include booster heater(2.2kW)

65 70 75

75 70 65

Total capacity(x10 Btu/h)

3

Total power consumption(kW)

42

36

30

24

4.5

4.0

3.5

3.0

2.5

Total capacity(x10 Btu/h)

3

indoor intake air WB temperature(°F)

SHF=0.71

Total power consumption(kW)

Outdoor intake air DB temperature(°F)

indoor intake air WB temperature(°F)

0 23 32 35 45 55 65 (67) 75 85 95 105 115

71 67 63

54

48

32

36

30

24

4.5

4.0

3.5

3.0

2.5

2.0 15 25 35 45 55 65

Outdoor intake air WB temperature(°F)

indoor intake air DB temperature(°F)

Does not include booster heater(2.2kW)

65 70 75

75 70 65

Total capacity(x10 Btu/h)

3

Total power consumption(kW)

COOLING CAPACITY HEATING CAPACITY

COOLING CAPACITY HEATING CAPACITY

8

3. CONDENSING PRESSURE AND SUCTION PRESSURE

350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

Indoor DB

temperature( F)

86 80 75 70

100

90 80 70 60 50 40 30 20

(psi.G)

Suction pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

Indoor DB temperature( F)

350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

80 70 60 50 40 30 20 10

(psi.G)

Suction pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor 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.

COOLING MODE

Data is based on the condition under outdoor humidity 75%. A point on the curve shows the reference point.

HEATING MODE

9

Data is based on the condition under indoor humidity 50%.

360 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160

(psi.G)

Condensing pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

Indoor DB

temperature( F)

86 80 75 70

100

90 80 70 60 50 40 30 20

(psi.G)

Suction pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

Indoor DB temperature( F)

350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

80 70 60 50 40 30 20 10

(psi.G)

Suction pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

Air flow should be set at HI. A point on the curve shows the reference point.

COOLING MODE

Data is based on the condition under outdoor humidity 75%. A point on the curve shows the reference point.

HEATING MODE

10

Data is based on the condition under indoor humidity 50%.

350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

110 100

90 80 70 60 50 40 30

(psi.G)

Suction pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

Indoor DB temperature( F)

340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140

(psi.G)

Condensing pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

80 70 60 50 40 30 20 10

(psi.G)

Suction pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

Air flow should be set at HI. A point on the curve shows the reference point.

COOLING MODE

Data is based on the condition under outdoor humidity 75%. A point on the curve shows the reference point.

HEATING MODE

11

Data is based on the condition under indoor humidity 50%.

350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

90 80 70 60 50 40 30 20

(psi.G)

Suction pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

DB( F)

86 80 75 70

Indoor DB temperature( F)

390 380 370 360 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190

(psi.G)

Condensing pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

80 70 60 50 40 30 20 10

(psi.G)

Suction pressure

30 3520 25 45 55 6540 50 60 70

Outdoor ambient temperature

DB( F)

75 70 65

Indoor DB temperature( F)

Air flow should be set at HI. A point on the curve shows the reference point.

COOLING MODE

Data is based on the condition under outdoor humidity 75%. A point on the curve shows the reference point.

HEATING MODE

12

4. STANDARD OPERATION DATA

Models

Item

Electrical circuitRefrigerant circuitIndoor sideOutdoor side

Voltage Frequency Total input Indoor fan current Booster heater current Outdoor fan current Comp. current Condensing pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Comp.shell bottom temperature Ref. pipe length Refrigerant charge

Fan speed Airflow (High)

Fan speed upper/lower Airflow

Unit

V

Hz

kW

A A A

A psi.G psi.G

˚F ˚F ˚F ˚F

ft

˚F ˚F ˚F ˚F

r.p.m.

CFM

˚F ˚F

r.p.m.

CFM

Btu/h

208/230

1.79

0.5

0.75

7.4/6.9 255

81 182 118

66 171

80

67

61

59

95

75

18,000

0.82

60

Cooling

208/230

1.56

0.5

7.6/8.4

0.75

6.1/5.9 202

61 126 102

34 111

70

60

96

68

47

43

18,600

Heating

PKH18FL

208/230

2.36

0.5

0.65+0.65

9.3/8.7 240

75 158 115

46 141

80

67

58

56

95

75

24,000

0.71

60

Cooling

208/230

2.37

0.5

7.6/8.4

0.65+0.65

9.5/8.7 243

63 149 115

35 126

70

60 105

70

47

43

25,000

Heating

PKH24FL

208/230

3.12

0.6

0.75+0.75

12.6/11.8 245

80 158 115

49 138

80

67

59

58

95

75

30,000

0.75

60

Cooling

208/230

3.02

0.6

8.7/9.6

0.75+0.75

12.2/11.4 236

60 159 113

32 130

70

60 103

70

47

43

33,000

Heating

PKH30FL

208/230

3.44

0.6

0.75+0.75

14.3/13.2 243

74 160 115

45 142

80

67

58

56

95

75

34,200

0.71

60

25

5 lbs 8 oz

1,310

710

1,310

710

1,400

990

1,400

990

790

1,590

750/750

3,170

760/760

3,350

760/760

3,350

25

9 lbs 15 oz

25

10 lbs 2 oz

25

10 lbs 9 oz

Cooling

208/230

3.54

0.6

8.7/9.6

0.75+0.75

14.7/13.7 263

60 170 120

33 148

70

60 109

71

47

43

38,000

Heating

PKH36FL

Intake air temperature

Discharge air temperature

Intake air temperature

Capacity SHF

DB

WB

DB

WB

DB

WB

13

5. OPERATING RANGE

1) POWER SUPPLY

1 Phase 60Hz 208/230V Guaranteed voltage range

2) OPERATION

Min. Max. 198V 208V 230V 253V

Function

Cooling

Heating

Air intake temperature

Condition

Standard temperature Maximum temperature Minimum temperature Maximum humidity Standard temperature Maximum temperature Minimum temperature

DB(˚F

80 95 67 80 70 80 70

Indoor

)

WB(˚F

6. OUTLET AIR SPEED AND COVERAGE RANGE

Model

PKH18FL

PKH24FL PKH30FL

Airflow (

CFM

710 710 990

)

Air speed

(

ft/sec

16.1

17.7

)

Coverage

range(ft

41 41 50

)

Outdoor

)

67 71 57 75 60 67 60

* With wind baffle D.B. 23°F if no wind baffle.

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 notch position. The coverage range should be used only as a general guideline since it varies according to the size of the room and furniture installed inside the room.

DB(˚F

95

115

*0 80 47 75 17

)

WB(˚F

75 — — 75 43 65 15

)

PKH36FL

990

17.7

50

7. ADDITIONAL REFRIGERANT CHARGE (R22(oz))

Refrigerant piping length (one way)

100ft

85ft

70ft

55ft

0

Model

PKH18FL PKH24FL PKH30FL PKH36FL

Outdoor unit

precharged

(

up to 100ft

5 lbs 8 oz 9 lbs 15 oz 10 lbs 2 oz 10 lbs 9 oz

)

25ft

0 0 0 0

40ft

0 0 0 0

14

115ft

2 2 5 5

130ft

4

4 10 10

150ft

7 16 16

164ft

9 20 20

6. NOISE CRITERION CURVES

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Hi

NOTCH

Lo

49

SPL(dB)44LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Hi

NOTCH

Lo

48

SPL(dB)41LINE

Wall

Unit

3.3ft

PKH18FL PKH24FL

Ambient temperature 80˚F Test conditions are based on JIS Z8731

PKH30FL PKH36FL

15

5

9-1/4

1-25/32

9-1/4

1-25/32

9-1/4 9-1/4

1-25/32

1/2

13-3/8

7-3/4

1-21/32

2-9/32

Top

Front

Right side

Left side

55-1/8

42-15/16

Air intake

9-1/4

C

Knock out hole for right piping

Refrigerant pipe. Drain pipe

Knock out hole for

left piping

Drain hose for

left-hand side piping

Drain hose

Lower side

Auto vane

(Gas pipe)

Drain hose O.D.1-1/16(or 7/8)

Bolt

Gas pipe

19/32

Terminal block for power supply

Terminal block for control

(Liquid pipe)

Liquid pipe 3/8F

Gas pipe 5/8F

Liquid pipe

A

1-3/16

1-15/32

1-17/32

3-27/32 2-9/16

2-29/32

5/32

3-15/16

1-17/32

1-3/16

1-15/32

2-29/32

5/32

1-5/32

11-1/32

1-3/16

7-1/4

1-3/16

3-5/32

1-3/18

2-3/8

13/32

1-17/32

1-15/32

2-9/16

3-15/16

A

B

C

Knock out hole for piping

31/32

43-11/16

7-7/32

9-7/16

B

44-3/32

21-23/32

4-23/32

2-5/32

4-7/32

4-3/8

Air outlet

21-23/32

Air outlet

Change vane (manual)

Under panel

Removable at left-hand

side piping

Knock out hole for under-piping

Refrigerant pipe. Drain pipe

Rear piping opening

Range for left rear piping opening

12-{1/4 Hole for

tapping screw

66-{1/4 hole for

tapping screw

Wall fixture

Unit center

32-{15/32

hole for bolt

23/32

3-19/32

35-7/16

38-31/32

17-29/32

11-7/32

9-21/32

3/4

9-7/16 11-1/32 12-3/8

24

Drainage range

on left-hand side

Drainage range

on right-hand side

10x3-19/32=(35-13/16)

7-3/32

2-15/32

8-27/32

3-17/32

23/32

OUTLINES AND DIMENSIONS

Indoor Unit PKH18FL PKH24FL

Unit : inch

16

PKH30FL PKH36FL

Unit : inch

3/4F

Through hole

on the market.

3-1/2 3-1/2~ 4

>< 1 Sleeves are available

B

9-1/4

Right side

7-3/4

C

19/32

or less

Drain hose O.D.1-1/16(or 7/8)

Bolt

4-3/8

4-1/32

Gas pipe

Liquid pipe 1/2F 1

2

Sleeve >< 1

2-9/32

2-15/32

1/2

9-1/4

Knock out hole

1-25/32

for right piping

2

1-21/32

2-5/32(Gas pipe)

9-7/16

4-23/32(Liquid pipe)

7-7/32

1

9-1/4

1-25/32

Front

Top

9-1/4

1-25/32

66-5/32

53-15/16 Air Intake

Terminal block for control

Terminal block for power supply

Lower side

55-1/8

Drain hose

43-11/16 (Drain hose)

27-5/16 Air outlet 27-5/16 Air outlet

9-1/4

13-3/8

louvers(manual)

Under panel (Removable at

left-hand piping)

Knock out hole for under-piping

Auto vanes

11-1/32 1-5/32

3-5/32

1-3/16

7-1/4 13/32

1-3/16

Refrigerant pipe .Drain pipe

2-3/8

7-17/32

12- 1/4 hole

for tapping screw

Front

Air

intake

or more 1-3/16

Air

outlet

5-/15/16 or less

Left side

10 or more

Knock out hole for wiring

2 or more 10 or more

C

A

1-3/161-3/16

B

3-15/16

1-17/32

3-15/16

Knock out hole

for left piping

5/32

1-17/32

1-15/32

2-29/32

2-9/16

1-15/32

1-17/32

2-29/32

5/32

17

1-15/32

2-9/16

3-27/32

Drain hose for

left-hand side piping

31/32

Unit center

Drainage range on

9-21/32

Drainage range on

11-7/32

right-hand side

23-7/16

13x3-19/32=(7-3/16)

50

Wall fixture

Unit out line

Left hand side

3/4

3-19/32

35-7/16

23/32

84-{1/4 hole

for tapping

screw

12-3/8

29-17/32

11-1/32

7-3/32

9-7/16

Range for left

rear piping hole

8-27/32

11-5/8

41- 15/32 hole

Rear piping hole

Range for left rear piping hole

for bolt

Remote controller

Pipe temperature thermistor / Liquid (RT2)

Distributor

Restrictor valve

Capillary tube

PKH18FL : ({0.126x{0.071x19.7) PKH24FL : ({0.157x{0.079x19.7) w

Refrigerant pipe (option) {3/8" (with heat insulator)

Refrigerant pipe (option) {5/8" (with heat insulator)

Strainer

Flared connection

w An error in this diagram has been

modified. The size of capillary tube {0.157x{0.07x19.7, was wrong.

PKH30FL : ({0.157x{0.079x23.6) PKH36FL : ({0.157x{0.079x15.7)

Pipe temperature thermistor / Liquid (RT2)

Distributor

Restrictor valve

Capillary tube

Refrigerant pipe (option) {1/2" (with heat insulator)

Refrigerant pipe (option) {3/4" (with heat insulator)

Strainer

Flared connection

COOLING

HEATING

Refrigerant flow

2-9/32

6-3/8

3/4

ON/OFF TEMP

MODEL

SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST

RUN

˚F ˚C

AMPMSTOP

START

AMPM

COOL

DRY

AUTO

FAN

HEAT

WIRELESS REMOTE CONTROLLER

Unit : inch

6

PKH18FL PKH24FL

PKH30FL PKH36FL

REFRIGERANT SYSTEM DIAGRAM

18

7

GR

L1 L2

POWER SUPPLY ~(1PHASE) AC208/230V 60Hz

GROUND

3

LED(HOT ADJUST)

LED(RUN INDICATOR)

LED1 LED2

WIRELESS REMOTE CONTROLLER

W.R

FS1,2

THERMAL FUSE

88H

HEATER CONTACTOR

HEATER THERMAL SWITCH

HEATER

26H

H

HEATER

12 312 312 3

36FL

OFF

ON

30FL

OFF

ON

MODELS 24FL

12 3

ON OFF OFF

ON

SW7

18FL

ON OFF

LED(DC5V POWER)

X4

RELAY(FAN MOTOR)

LED1 LED2

LED(DC12V POWER)

SW9

SWITCH(MODEL SELECTOR)

F1,F2

VARISTORZNR

SYMBOL NAME

I.B

INDOOR POWER BOARD INDOOR CONTROLLER BOARD

CN2L

SW1 SW2

SW6

FC

CONNECTOR(LOSSNAY)

SWITCH(FUNCTION SELECTOR) SWITCH(ADDRESS SELECTOR)

SWITCH(MODEL SELECTOR)

FAN PHASE CONTROL

P.B

CN51

CONNECTOR(CENTRALLY CONTROL)

SW3

SWITCH(EMERGENCY OPERATION)

SW5

SWITCH(MODEL SELECTOR)

SW7

SWITCH(TWIN/TRIPLE SELECTOR)

SW8

SWITCH(OPTION)

BZ

TB2~TB6 TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

RT1 RT2

PIPE TEMPERATURE THERMISTOR/LIQUID

W.B

WIRELESS REMOTE CONTROLLER BOARD BUZZER

SWITCH(HEATER ON/OFF)

SW1

SWITCH(COOLING ON/OFF)SW2

RECEIVING UNIT

RU

NAMESYMBOL

VANE MOTOR

MV

FAN MOTOR

MF

CAPACITOR(FAN MOTOR)

C

12

OFF

ON

1542

231

2341

165432

1432

165432

10987654321

ON OFF

RG79J693H02

321

9

ORN YLW

1

2

TB4

3

BRN

TB3

OUTDOOR UNIT

1

2

TRANSMISSION WIRES DC12V

3

9

REMOTE

W.R

CONTROLLER

CNB

W.B

LED1

LED2

BZ

RU

SW1 SW2

ON

123456

OFF

123456

ON

NOTES:

1.Since the indoor fan motor(MF)is connected with 230V power,if 208V power is used,change the dip switch(SW8)on the indoor controller board as shown in fig:*1.

fig:*1

Indoor fan motor(MF)for 208V.

2.Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing.

3.Indoor and outdoor connecting wires are made with polarities, make wiring matching terminal numbers.

4.Symbols used in wiring diagram above are, :Connector, :Terminal block.

5.Emergency operation If remote controller or microcomputer fails but there is no other trouble emergency operation is possible by setting dip switch(SW3<I.B>) on the indoor controller board.

[Check items] (1) Make sure that no other trouble exist in 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 and 1 • 2 on for heating. (2) Turn on outdoor unit side circuit breaker,then indoor unit side circuit breaker. (3) During emergency operation indoor fan runs at high speed but auto-vane does not work. (4) Thermostat will not function.Cold air blows out for defrosting during heating thus do not operate defrosting for a long time. (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.

SW8

H

FS1FS2

88H

TB2

26H

BWN

YLW

8

88H

5 6

GRY

7

GRY

RED BLUBLU

64

35

RED

2

1

12

HEATER CN24 (YLW)

6

[LEGEND]

2 1

3

2 1

3 2 1

2 1

312 12

12

4 3 2 1

213131

SW3 SW9

SW7

SW6

SW1

SW8

SW5

RT2

RT1

F2

F1

SW2

CN51

CENTRALLY CONTROL

(WHT)

CN40

REMOCON

POWER

LED1 LED2

CN2L

LOSSNAY

ZNR

OUT DOOR

CN30

WHT

BLK

CN2D (WHT)

GRN/YLW

RED BLU

RED

BLU

P.B

TRANS

(DC13.1V) CN2S (WHT)

CNSK(RED)

I.B

MF

C

135

FC

MV

X4

WHT

RED

BLK

WHT

BLK

FAN (WHT)

INTAKE CN20 (RED)

POWER CNDK (WHT)

POWER CND (RED)

WIRELESS CN90 (WHT)

REMOCON CN22 (BLU)

PIPE CN21 (WHT)

VANE CN6V (WHT)

DRAIN CN31 (WHT)

243˚F ,10A(18,24FL)/16A(30,36FL)

FUSE(6A/250V)

(32˚F /15kΩ, 77˚F /5.4kΩ DETECT)

(AC208/230V)

(BLU)

WIRING DIAGRAM

MODELS PKH18FL, PKH24FL, PKH30FL, PKH36FL

19

WIRING DIAGRAM

The drawing has been revised as some errors in WIRING DIAGRAM have been modified. The former drawing number is RG79J693H01.

8 OPERATION FLOW-CHART

START

Power circuit

breaker

Check SW

ON twice

Operation SW

ON

“OFF” timer

“ON” timer

STOP

Set time

complete

Set time complete

1

NO

YES

w 1

w 2

w 3

w 4

w 5

w 7

w 6

PROTECTION DEVICE

SELF HOLD RELEASE

Remote controller

indicator lamp OFF

Trouble STOP

Remote controller

operation display

Operating mode

(COOL)

Operating mode

(DRY)

Operating mode

(HEAT)

Operating mode

(FAN)

Auto COOL/HEAT

operation

COOL operation

DRY operation

HEAT operation

FAN operation

Trouble

PROTECTION DEVICE

SELF HOLD

Remote controller

trouble display

Indoor side

Outdoor side

Fan STOP

Auxiliary heater OFF

Compressor OFF

Fan STOP

Four-way valve OFF

MAIN OPERATION

w1 In addition, the centralised control and remote control can be operated. w2 The modes which indicate the sources of trouble are listed below.

● E0-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 Fan runs on low speed for 1 minute in order to remove overheat air. w5 The 3-minute (6 minutes …heating mode) time-delay functions after compressor stops. w6 FAN or AUTO mode is selected by the indoor dip switch setting. w7 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)

20

COOLING OPERATION

COOL operation

Four-way valve/OFF

NO

Vane setting notch

Initial

COOLING

w 8

55 deg downward angle 70 deg downward angle

NO

Downward discharge

Vane horizontal

w 9

YES

Vane initial

setting

Vane

YES

Fan speed

LOW

YES

1 hour

YES

airflow

Compressor

thermostat ON

Allowance

cancel

NO

YES

NO

YES

NO

compressor operation

w 10

w 11

NO

compressor operation

Allowance cancel

NO

compressor operation

temperature is 34˚F

3-minute

time delay

NO

6-minute

time delay

NO

3-minute

YES

Coil frost protection

NO

Cooling area

YES

10-minute

YES

Coil frost

prevention

NO

16-minute

YES

Indoor pipe

or lower

NO

YES

NO

Coil frost

prevention

Indoor coil

temperature is 50˚F

or higher

YES

Defrosting

protection detection

temperature 30˚F

or lower

YES

6-minute

time delay

Coil frost

prevention release

NO

3-minute

time delay

Allowance

period

NO

6 minute

time delay

Allowance set

YES

NO

1 min continue

FAN speed

LOW 5 min elapse

YES

LOW

FAN speed

NO

Coil frost protection

YES

Outdoor unit

trouble

Compressor ON

1

Compressor OFF

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. w10 After 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.

21

DRY OPERATION

DRY

operation

Four-way valve / OFF

Initial dry

operation

Room temperature is

64°F or lower

During

compressor ON

Compressor &

thermostat ON

Vane initial setting

Vane

setting notch

10-minute compressor

OFF timer start

Compressor OFF

Fan STOP

3-minute

time delay

10-minute

compressor

OFF

Compressor ON

time set

Compressor ON

Fan speed LOW

1

Compressor &

thermostat

ON

3-minute

compressor

operation

Compressor ON

time completes

NO

YES

NO

YES

w14

w13

YES

NO

YES

NO

w9

YES

w9

NO

w12

YES

NO

YES

w8

w8—9 Refer to page OC276-21. 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 OC276-30.

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

22

HEATING OPERATION

Heat operation

initial

YES

setting

NO

Compressor

NO

trouble

1

operation

YES

>

T

1 To

=

YES

w 15

YES

6 min. restart

2

Hot adjust start

FAN SPEED

Compressor ON

w 16

NO

3 min.restart

prevention

very low

HEAT mode

NO

HEATING

Vane setting

notch

Vane initial

defrosting

Four-way valve ON

Hot adjust

in process

Compressor ON

w 9

thermostat ON

Allowance cancel

NO

Indoor piping

5°F or lower

YES

Outdoor unit

FAN SPEED

Very low airflow Compressor OFF

AUTOMATIC COOLING/HEATING OPERATION

Auto COOL/HEAT

NO

Initial mode

w 17

COOL mode

NO

10-minute

NO

compressor

operation

YES

Allowance cancel

w 11

Heating

area

FAN STOP

w 11

Fan area

20 min.elaspe

YES

Fan area

Heating area

w 11

Fan area

Cooling area

YES

Defrost operation

START

Four-way valve

OFF

NO

w 11

YES

w 10

NO

Heating area

NO

Defrost

30 min. elapse

YES

Outdoor unit

trouble

1

A

Outdoor unit

trouble

YES

Defrost release

NO

Indoor piping

131°F or lower

NO

Auxiliary

heater ON

NO

Indoor piping

140°F or higher

YES

Auxiliary heater

Overheat remote

NO

Indoor Coil. temp.

150°F or higher

Allowance

period

Overload protect

2

B

NO

YES

OFF

START

YES

1

YES

NO

Auxiliary heater

thermostat ON

Auxiliary heater

NO

6-minute restart

prevention

Allowance set

Compressor OFF

ON

YES

FAN SPEED

setting notch

Auxiliary heater

thermistor is 140°F

FAN speed

Airflow 10% up

Indoor piping

95°F or higher

NO

HOT adjust

5 min. elapse

YES

Low

FAN SPEED

Low 2 min.

elapse

YES

Hot adjust

release

A

3-minute

OFF

YES

Indoor coil

or higher

YES

Low notch

YES

B

NO

FAN setting

notch

YES

NO

YES

NO

T

1 ] (To + 4)

YES

NO

YES

Cool mode

set

After 15min. T

1 ] (To + 4)

HEAT operation

11

HEAT operation

COOL mode

NO

T

1 [ (To - 4)

After 15min.

1 [ (To-4)

T

COOL operation

w15 ( i ) Until Low airflow is set while in hot adjustment

(ii )While defrosting (FAN STOP) (iii)When thermostat is OFF In the case of( i ), (ii) and (iii) above, airflow is horizontal regardless the VANE setting.

w16 When AUTO operation is started, COOLor HEAT mode is selected automatically. w17 T1 : Room temperature.

To : Set temperature

23

9 MICROPROCESSOR CONTROL

ON/OFF TEMP

MODEL

SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST RUN

˚F ˚C

AMPMSTOP

START

AMPM

COOL

DRY

AUTO

FAN

HEAT

1.OUTLINE OF MICROPROCESSOR CONTROL

INPUT to remote controller

● OFF-ON switching.

● COOL/DRY-AUTO-HEAT 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)

Indoor unit

INPUT from indoor unit

Remote controller board

● Processes and transmits orders.

Indoor controller board

OUTPUT to remote controller

● Indication LCD lights.

● Room temperature thermistor (RT1)

● Pipe temperature thermistor (RT2)

OUTPUT to indoor unit

● Auto vane’s angle setting.

● Booster heater ON-OFF Control.

● Emergency stop.

Independent Control of Outdoor Unit

● Compressor protection device working

● Defrosting START-STOP

● Fan speed control.

● Crankcase heater control

ON-OFF.

● Self diagnostic function

● Receives orders from remote controller and tem-

perature 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.

123

Polar three-wire cable

Outdoor unit

OUTPUT to outdoor unit

12VDC

1 2 3

● Compressor and outdoor fan : ONOFF

● Operation mode change :COOLHEAT.

24

2. INDOOR UNIT CONTROL

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

ON

LOW or HIGH LOW or HIGH

ON

OFF

ON

OFF

Operation starts by POWER button ON.

Operation stops by POWER button OFF.

Room temperature becomes equal to set temperature.

Room temperature rises above set temperature.

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

FAN

˚F

COOL

AM

2-1 COOL operation

1 Press POWER ON/OFF button. 2 Press the MODE button to display COOL.

3 Press the TEMP( or ) button to set the desired temperature.

NOTE:

Set temperature changes 2°F when the TEMP( or )

button is pressed one time. Cooling 65 to 87°F.

w1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this peri-

od has ended.

25

(1) Compressor control

5 minutes

SET

low

5 minutes

SET

low

OFF

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.

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.

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.

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)

1 Start-up of outdoor unit abnormality detec-

tion.

2 Release of outdoor unit abnormality detec-

tion.

3 Unit stop due to outdoor unit abnormality

with P8 indication.

NOTE 1 : Fan stops immediately if the unit stops or the check mode is started.

26

(3) Auto vane control

10°

1

30° downward

2

60° downward

3

70° downward

4

SWING5

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

2 Fan speed : HIGH

10°

30°

60°

70°

SWING

<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.

Changes by pressing the AIR DISCHARGE button.

27

(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: Indoor coil temperature is more than 9 degrees above room temperature. RANGE B : Indoor coil temperature is within 9 degrees either way of room temperature. RANGE C : Indoor coil temperature is more than 9 degrees below room temperature.

Indoor coil temperature minus room temperature

(degree)

+9

-9

RANGE A

0

RANGE B

RANGE C

28

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

ON

DRY MODE

ON

OFF

ON

OFF

Operation starts by POWER button ON.

Operation stops by POWER button OFF.

Room temperature becomes equal to set temperature.

Room temperature rises above set temperature.

2-2 DRY operation

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

FAN

˚F

DRY

AM

1 Press POWER ON/OFF button. 2 Press the MODE button to display “DRY” 3 Press the TEMP( or ) button to set the desired temperature.

NOTE: The set temperature changes 2°F when the TEMP( or )

button is pressed one time. Dry 65 to 87°F

w1 Even if the room temperature rises above the set temperature during this period, the compressor will not start until this

period has ended.

29

1) Compressor control

Compressor OFF

43°F or more

Below 43°F

STOP

Pipe temp. Fan

LOW

All LOW

Compressor ON

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.

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.

(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.

30

2-3 HEAT operation

Minimum 3 minutes w2

ON

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

Power ON lamp

STAND BY lamp

ON

LOW or HIGHLOW or HIGH

ON

OFF

Horizontal Horizontal

OFF

ON OFF

LOW

w

1

LOW

w

1

Hot adjustment

From POWER ON until

warm begins to blow

Hot adjustment

Depends on remote controller setting

w

1 Changeable LOW or HIGH

by indoor dip switch SW1-6 .

OFF during thermostat OFF hot adjustment defrosting

Operation starts by POWER button ON.

Operation stops by POWER button OFF.

Room temperature becomes equal to set temperature.

Room temperature falls below set temperature.

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

FAN

˚F

HEAT

AM

1 Press POWER ON/OFF button. 2 Press the MODE button to display “HEAT” 3 Press the TEMP( or ) button to set the desired temperature.

NOTE: The set temperature changes 2°F when the TEMP( or ).

button is pressed one time. Heating 63 to 83°F.

[DEFROST]

The [DEFROST] symbol is only displayed during the defrost operation.

[STANDBY]

The [STANDBY] symbol is only displayed from the time the heating

operation starts until the heated air begins to blow.

w2 Even if the room temperature falls below the set temperature during this period, the compressor will not start until this peri-

od has ended.

31

(1) Compressor control

13-minute time delay

To prevent overload, the compressor will not start within 3 minutes after stop.

2The compressor runs when the room temperature is lower than the set temperature.

The compressor stops when the room temperature is equal to or higher than the set temperature.

3The compressor stops in check mode or during protective functions. 4Overheat protection

When the indoor coil thermistor reads 158°F or above, the overheat protection will start.

The compressor stops for 6 minutes, and then restarts. If the start condition is satisfied again within 10 minutes of compressor operation, both the indoor and outdoor units stop, displaying a check code of “P6” on the remote controller.

Overheat protection is terminated when the start condition is not satisfied again during the allowance (10-minute compressor operation), when operation mode changes to other mode, or when thermostat turns OFF.

(2) Indoor fan control

(a) Normal control

( i )The indoor fan runs on LOW speed during the thermostat OFF.

LOW speed can be changed to HIGH speed by setting the dip switch SW1-6. If the indoor coil temperature becomes more than 5 degrees below the room temperature during the thermostat OFF, the indoor fan will stop. After, when the indoor coil temperature becomes within 5 degrees of room temperature, the indoor fan will run on LOW speed.

(ii)Hot adjustment

Hot adjustment is a warm-up for HEAT operation <Start conditions> The hot adjustment works under any of the following conditions.

● HEAT operation starts.

● Defrosting ends.

● Thermostat turns ON.

[Hot adjustment] Initially, the indoor fan runs on LOW speed. When 5 minutes have passed or the indoor coil temperature exceeds 95°F, the fan speed will not be changed. 2 minutes later, the hot adjustment ends. Then, the fan speed depends on

the remote controller setting. (iii)The indoor fan stops when the indoor coil temperature is within 9 degrees either way of room temperature. (iv)To eliminate the remaining heat, the indoor fan runs for the first 1 minute after the booster heater is turned OFF.

(3) Auto vane control

Auto vane position is set to 70 degrees airflow at the start-up of HEAT operation. (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.

10°

NOTE : In the following cases, the discharge direction is 30° regardless of the remote controller setting.

1 During the hot adjustment with fan speed at LOW 2 During defrosting with indoor fan OFF 3 During thermostat OFF

(4) Booster heater control

When the room temperature is 6 degrees below the set temperature, the booster heater will turn ON. When the room temperature is equal to the set temperature, booster heater will turn OFF. During the hot adjustment, the booster heater will not work.

When the indoor coil thermistor rises to 140°F or above, the booster heater cannot work. When the indoor coil thermistor falls to 131°F or below, the booster heater can work.

30° 60°

70° SWING

32

(5) Detecting abnormalities in the outdoor unit

When the outdoor unit is determined to be abnormal by the following causes, the compressor will stop and the check code “ P8 ” will appear on the remote controller display.

( i ) During compressor ON while hot adjustment is set.

1 If the difference between the indoor coil temperature and room temperature is in the RANGE B, the indoor fan will

stop. 2 Within 20 minutes after entering RANGE B (except for the first 10 seconds), a) If the temperature difference enters RANGE A, the hot adjustment starts, b) If the temperature difference is still in RANGE B, the outdoor unit is deemed abnormal. c) If the temperature difference enters RANGE C, defrosting starts. 3 Within 20 minutes after entering RANGE C, if the temperature difference does not return to RANGE B,the outdoor

unit is deemed abnormal. 4 If the temperature difference returns to RANGE B, the next 20 minutes is an allowance period. If the difference enter

RANGE Aduring the allowance, defrosting ends and the hot adjustment starts. If the difference does not enter RANGE Aduring the allowance, the outdoor unit is deemed abnormal.

( ii ) During compressor ON in defrosting

After 30 minutes of defrosting in hot adjustment, if the temperature difference is still in RANGE C, the outdoor unit is determined to be abnormal. When RANGE B does not change to RANGE Aafter 20 minutes have passed since RANGE C had outdoor unit is determined to be abnormal.

( iii ) During compressor OFF

Not detecting abnormalities.

(6) Indoor coil temperature abnormality detection

An abnormality can be detected during compressor ON, except for the following.

●For the first 30 minutes after the temperature difference between the indoor coil temperature and room temperature enters the RANGE C.

●When the temperature difference enters the RANGE C until it moves to the RANGE B.

(7) Defrosting operation

After the outdoor unit starts the defrosting operation, when the temperature difference between the indoor coil temperature and room temperature gets out of RANGE Aand into RANGE B, the indoor unit starts the defrosting mode. After the outdoor unit stops the defrosting operation, when the temperature difference returns to the RANGE A, the indoor unit stops the defrosting mode. While the indoor unit is in the defrosting mode, the indoor fan and the booster heater stop.

w1 RANGE A: Indoor coil temperature is more than 9 degrees above room temperature.

RANGE B : Indoor coil temperature is within 9 degrees either way of room temperature. RANGE C : Indoor coil temperature is more than 9 degrees below room temperature

Indoor coil temperature minus room temperature

(degree)

+9

0

-9

RANGE A

RANGE B

RANGE C

33

2-4 AUTO operation (Automatic COOL/HEAT change over operation)

Mode change (HEAT COOL)

When room temperature becomes 4 degrees above the set temperature,the operation mode can not be changed for 15 minutes.

(degree)

To+4

To:Set temperature (65~83°F)

To+2 To To- 2

To- 4

Compressor

Start

HEAT mode HEAT mode

Mode change

15 minutes

Minimum 3 minutes

COOL mode

(COOL HEAT)

ON OFF

10 20 30 40 50 60 70 80 90 100 110 120

COOLING

0°F

115°F

HEATING

75°F17°F

(°F)

0

*

In case of the wind baffle installed.

*

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

FAN

˚F

AUTO

AM

1 Press POWER ON/OFF button.

2

Press the MODE button to display “AUTO”

3 Press the TEMP( or ) button to set the desired temperature.

NOTE: The set temperature changes 2°F when the TEMP( or )

button is pressed one time. Automatic 65 to 83°F.

●“AUTOMATIC” works to change by itself the operation mode either to cooling or heating according to the room temperature.

(1) Initial mode

1 When AUTO operation starts after unit OFF.

● If the room temperature is higher than the set temperature, operation starts in COOL mode.

● If the room temperature is equal to or lower than the set temperature, operation starts HEAT mode.

2 When AUTO operation starts after COOL or HEAT operation, the previous mode continues.

(2 ) Mode change

1 HEAT mode changes to COOL mode when 15 minutes have passed since the room temperature became 4 degrees

above the set temperature.

2 COOL mode changes to HEAT mode when 15 minutes have passed since the room temperature became 4 degrees

below the set temperature.

(3) Temperature range

AUTO operation is available under the outside air temperatures as follows.

34

10°

1

30° downward

2

60° downward

3

70° downward

4

SWING5

2-5 Auto vane control

12

3

4

5

10˚

30˚

60˚

70˚

SWING

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

SWING

FAN

˚F

AM

AUTO

To change the air flow direction, press VANE ( ) button.

Available in COOL operation with fan speed on HIGH or in HEAT operation. 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°.

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 VANE ( ) button on the remote controller.

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.

(2) HEAT operation

At the start-up of HEAT operation, discharge direction depends on the setting of the last operation. After, it can be changed to another direction with VANE ( ) button. The discharge direction shifts to 10° regardless of the remote controller settings under any of the following conditions.

● Thermostat OFF

● Defrosting

● Indoor fan speed LOW in hot adjustment

35

2-6 TIMER operation

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

SWING

FAN

˚F

PMSTOP

START

AM

COOL

MODE

TEST RUN

FAN

VANE

TEST RUN

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

h

min

LOUVER

MODE

CHECK

RESETSET CLOCK

FAN

TEST RUN

COOL

A

4

6

3

2

5

2-7 Test run

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.

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.

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 equal to or greater than 1.0M

1 Turn on the main power to the unit. 2 Press the button twice continuously.

(Start this operation from the status of remote controller display turned off.)

A and current operation mode are displayed.

3 Press the ( ) button to activate COOL mode, then

check whether cool air is blown out from the unit.

4 Press the button and check whether strong air is blown out

from the unit.

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 22to 66.

• It is not possible to run the in FAN, DRY or AUTO mode.

36

(1) Indoor coil temperature code

1 ON

1

2

1.2 ON

1

2

1.2 OFF

SW3

1

2

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, and should rise in normal HEAT operation.

Code

Indoor coil temperature

Code

Indoor coil temperature

1

~34(36)°F

9

~113°F

2

36(37)°F~50°F

10

~122°F

3

~59°F

11

~131°F

4

~68°F

12

~140°F

5

~77°F

13

~158°F

6

~86°F

14

~191°F

7

~95°F

15

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.

2-8 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.

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.

1. For emergency cooling, set the dip switch SW3-1 to ON and SW3-2 to OFF. For emergency heating, set the dip switch SW3-1,2 to ON.

Emergency cooling

Emergency heating

Normal operation

8

~104°F

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.

37

2-9 Dip switch and jumper connector functions.

Each figure shows the initial factory setting.

2-9-1 On remote controller board (1). On indoor controller board

1. SW1 (Mode selector) 1 2 3 4 5 6 7 8 9

ON OFF

SW1-1) Switch that changes between FAN mode and AUTO mode

OFF:AUTO mode for models with heat pump ON:Fan mode for models without heat pump

SW1-2) Switch for drain pump

OFF:The drain pump works in COOL and DRY operation. ON:The drain pump works in both COOL and DRY and HEAT operation.

SW1-3) Switch to change the temperature to start coil frost prevention

OFF:34°F ON:36°F

SW1-4) Switch for set temperature adjustment in HEAT mode

During HEAT operation,warm air collects near the ceiling.When the indoor unit is installed near the ceiling,the temperature read by room temperature thermistor differs from the actual living-space temperature by about 7 degrees. Therefore,the room temperature read by room temperature thermistor must be lowered by 7 degrees. OFF:7-degree adjustment

ON:NO adjustment SW1-5) Not for use. SW1-6) Switch for fan speed during thermostat OFF in HEAT operation

OFF:LOW

ON:LOW or HIGH(set with remote controller) 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.

10

2. SW2 (Address selector) 1 2 3 4 5 6

ON OFF

3. SW3 (Emergency operation switch)

Normal operation

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.

SW2-1~6) Not for use.

For emergency cooling

1 2

ON OFF

For emergency heating

1 2

ON OFF

38

5. SW6 (Address selector) 1 2 3 4

ON OFF

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.

This switch is not available for series PKH.

Service Ref.

SW7

7. SW8 (Option) 1 2 3 4

ON OFF

SW8-1~2) Not for use. SW8-3~4) Not for use. SW8-5) Not for use. SW8-6) OFF:For 230V power supply

ON: For 208V power supply

8. SW9 (Model selector) 1 2 3 4

ON OFF

SW9-1~5) Keep this switch.

PKH18FL

ON OFF

1 2 3

56

5

2-10 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.

PKH24FL

ON OFF

1 2 3

PKH30FL PKH36FL

ON OFF

1 2 3

ON OFF

1 2 3

39

2-11 Wireless remote controller pair number setting operation

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

RESET

SET

CLOCK

MODEL SELECT

4

A

Model No.

3

2,5

MODEL SELECT

min

A Pair No. of wireless remote controller

Indoor PC board

0 1 2

3~9

Factory setting Cut J41 Cut J42 Cut J41, J42

1 Turn on the main power to the unit. 2 Press the SET button with the point of a ball-point pen or the like.

Start this operation from the status of remote controller display turned off.

blinks and Model No. is lighted.

3 Press the button twice continuously. A Pair No. “0” blinks. 4 Press the temp button to set the pair number you want to set. 5 Press the SET button with the point of a ball-point pen or the like.

Set pair number is lighted for three seconds then turned off.

40

10

CHECK

h

CHECK

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

h

min

RESET

SET

CLOCK

4

AB

3

2

1 2 3 4 5 6

7 8 9

Check Code Alarm Buzzer sound

Suction sensor alarm Pipe sensor alarm Transmission alarm Drain sensor alarm Drain pump alarm Anti-freezing on Anti-overheat on System error Outdoor unit alarm No alarm (no error)

Single beep O 1 Single beep O 2 Single beep O 3 Single beep O 4 Single beep O 5 Single beep O 6 Single beep O 6 Single beep O 7 Single beep O 8 Receiving signal only

(no error alarm)

TROUBLESHOOTING

1. Self-diagnostic function

Self-check

1 Turn on the main power to the unit. 2 Press the button twice continuously.

(Start this operation from the status of remote controller display turned off.)

A begins to light. B “00” begins to blink.

3 While pointing the remote controller toward the unit’s receiver,

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.

41

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.

Check

code

1

2

Diagnosis of malfunction Cause Check points

Abnormality of room temperature thermistor (RT1)

Abnormality of indoor coil thermistor (RT2)

Auto vane motor does not work. Connector is poorly connected. Auto vane motor is poorly assembled. Indoor controller board is damaged.

Protection function is working.

Indoor/outdoor connecting wire is connected incorrectly. Indoor/outdoor connecting wire shorts. Compressor protector is damaged. Defroster is broken. Remote controller is damaged. Transmission wire is poorly connected

1) Bad contact of thermistor

2) Damaged thermistor

Auto vane motor is damaged. Auto vane motor relay is damaged.

Refer to check code on remote controller display.

Transmission wire is damaged. Connector is poorly connected.

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.

Abnormality of drain sensor 1) Bad contact of transmission

4

Malfunction of drain pump 1) Malfunction of drain pump

5

Coil frost protection is work-

6

ing.

Abnormality in outdoor unit

8

❈ The number of check code shows times of Buzzer sound.

wire

2) Damaged thermistor

2) Damaged drain sensor

1) Short cycle of air cycle

2) Dirty air filter

3) Damaged fan

4) Abnormal refrigerant

1) Wrong wiring of indoor/outdoor connecting wire

2) Reversed phase

3) Protection device is working

4) Damaged outdoor coil 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.

1) Check the drain pump.

2) ● Check the drain sensor.

● Check the drain sensor heater. Normal resis-

tance should be 82Ω. (between 1 - 3of

CN50). If the resistance is normal, replace the indoor controller board.

1) Clear obstructions from the air cycle.

2) Clean the air filter

3) Check the fan.

4) Check the refrigerant temperature.

1) Check the indoor/outdoor connecting wire.

2) Change the connection of electric wiring.

3) Check the protection device.

4) Measure the resistance of the outdoor coil thermistor. If the resistance is normal, replace the outdoor controller board.

42

3. WRONG WIRING ON SITE

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

3-1 Between remote controller and indoor unit

If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controller when the POWER button is pressed. The beep sound will also not be heard.

3-2 Phenomenon due to wrong wiring between indoor and outdoor units

Wrong wiring Mode

Disconnection between 1 and 1 or 2 and 2.

COOL

HEAT

COOL

HEAT

COOL

HEAT

COOL

HEAT

COOL

HEAT

COOL

HEAT

Thermostat

Phenomenon

OFF Operation stops.

4-Way valve turns ON. 9 minutes later, check code “P8” appears

ON

on remote controller display.

OFF

Cooling operation. Several minutes later, check code “P8” appears

on remote controller display.

ON Normal operation until first thermostat OFF.

OFF Outdoor unit stops.

Operation stops. 9 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops.

Operation stops. 27 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Outdoor unit stops.

Operation stops. 9 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops.

Operation stops. 27 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Outdoor unit stops.

Operation stops. 9 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops.

Operation stops, 27 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Outdoor unit stops.

Operation stops. 9 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops.

Operation stops. 27 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops.

Operation stops. 9 minutes later, check code “P8” appears on

ON

remote controller display.

OFF Operation stops. 4-way valve turns OFF.

27 minutes later, check code “P8” appears on remote controller

ON

display.

Disconnection between 3 and 3.

COOL

HEAT

Normal operation.

–

OFF Operation stops. 4-way valve turns OFF.

Operation stops. 27 minutes later, check code “P8” appears on

ON

remote controller display.

43

4. HOW TO CHECK THE PARTS

0

10

20

30

40

50

-4 14 32 50 68 86 104 122

< Thermistor for lower temperature >

Temperature (°F)

Resistance (K")

Parts name Check points

Room temperature thermistor (RT1) Pipe temperature thermistor (RT2)

Disconnect the connector, then measure the resistance using a tester. (Surrounding temperature 50°F to 86°F)

Normal

4.3k' to 9.6k'

Abnormal

Open or short

(Refer to the thermistor)

Fan motor (MF)

Relay connector

1

Red

White

3

5

Black

Protector

Vane motor (MV)

Orange

4

Red

5

Pink

2

Connector

M

Brown

Yellow

3 6 1

Measure the resistance between the terminals using a tester.

Motor terminal

1

or

Relay connector

3 5

Red-White

White-Black

Opening and closing temperature of protector.

Open: 266i41°F (Fan motor OFF) Close: 176i68°F (Fan motor ON)

Measure the resistance between the terminals using a tester. (Surrounding temperature 68°F to 86°F)

Brown-Yellow

Brown-Blue

Blue

Red-Orange

Red-Pink

Thermistor for lower temperature

Room temperature thermistor(RT1) Pipe temperature thermistor(RT2)

18,24FL

99.5'i10%

103.5'i10%

Normal

186 to 214'

Normal

PKH

30,36FL

62.6'i10%

74.0'i10%

Abnormal

Open or short

Abnormal

Open or short

Thermistor R0=15k' ±3% Fixed number of B=3480k' ±2%

Rt=15exp { 3480( ) }

1

273+t

32°F 15k' 50°F 9.6k' 68°F 6.3k' 77°F 5.4k' 86°F 4.3k' 104°F 3.0k'

1

273

44

11

Metal fixture

Screws

Hanger of indoor unit

Catch of installation plate

Terminal cover

Electrical box cover

Connector

Indoor controller board

Right side panel

DISASSEMBLY PROCEDURE

Indoor unit PKH24FL

OPERATING PROCEDURE PHOTOS&ILLUSTRATION

1. Removing the lower side of the indoor unit from the installation plate

(1) Remove the 2 screws.

Hang the indoor unit hangers to the catches on the installation plate.

Figure 1

2. Removing the right side panel

(1) Remove the 2 screws of the right side panel:one on the

bottom and the other on the upper right-hand side. (2) Disconnect the connector from the adapter case. (3) Sliding the right side panel to the right, pull it out toward

you.

3. Removing the indoor controller board

(1) Remove the right side panel. (2) Remove the screw of the electrical box cover, and remove

the cover. (3) Disconnect the connectors on the indoor controller board. (4) To unhook the catches on the right-hand side of the indoor

controller board, pull the left-hand side toward you and lift

up the cover to the right. Then the indoor controller board

can be removed.

Figure 2

Photo 1

Indoor controller

board

Electrical box cover

Catches

4. Removing the electrical box

(1) Remove the right side panel. (2) Remove the screw of the electrical box cover, and remove

the cover. (3) Remove the room temperature thermistor and the pipe

temperature thermistor. (4) Disconnect the vane motor connector on the indoor con-

(5) Remove the 2 screws of the electrical box. (6) Disconnect the connector of the heater lead wire connec-

(7) Disconnect the connector of the fan motor lead wire. (8) Remove the electrical box.

troller board.

tor.

45

Photo 2

Room temperature thermistor

Pipe temperature thermistor

Screws

Electrical box

OPERATING PROCEDURE PHOTOS&ILLUSTRATION

Catch on the left side panel

Catch on the unit

(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.

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 con-

troller board.

Photo 3

Capacitor

Indoor controller board case

Photo 4

Vane motor

Relay

Power board

Electrical box

Screws

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.

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.

Figure 3

Photo 5

Left side panel

Photo 6

Slide to the right

Screws for grilles

Drain pan

Screws

Grilles

Drain hose band

Drain hose

46

OPERATING PROCEDURE PHOTOS

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.

Photo 11

Heat exchanger

Bearing support

Photo 7

Photo 8

Photo 9

Screw

Motor support

Line flow fan

Fan motor

Screw

Fan motor

Screws

Fan motor

Motor fixture

Screw

Line flow fan

9. Removing the electrical heater.

(1) Remove the left and right side panels. (2) Remove the grilles. (3) Remove the drain pan. (4) Loosen the screw that fixes the line flow fan to the fan

motor.(See Photo 7.)

(5) Remove the screw of the center support, and remove the

support. (See Photo 10.)

(6) Remove the 2 screws on the left and right sides of the heat

exchanger, and pull the bearing support toward you. (See Photo 11.)

(7) Pull the left-hard side of the heat exchanger toward you,

and remove the line flow fan.

(8) Remove the heater fixing screws (1 screw each on right

and left sides), and slide the heater element to the left to remove the heater.

Photo 10

Photo 12

Heat exchanger

Line flow fan

Heater element

Motor support

ScrewCenter support

Heater fixing screw

47

12 PARTS LIST

No.

Parts No. Parts Name Specifications

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Q'ty / set

PKH

FL FL

FL

1 2

3

4

5

SLEEVE BEARING BEARING MOUNT LEFT LINE FLOW FAN LEFT LINE FLOW FAN RIGHT LINE FLOW FAN RIGHT LINE FLOW FAN HEAT EXCHANGER HEAT EXCHANGER HEAT EXCHANGER HEAT EXCHANGER

1 1 1

1

1 1 1

1

1 1

1

FL

1 1

1

R01 005 103 R01 Z61 102 R01 12G 114 R01 16G 114 R01 12G 115 R01 16G 115 T7W B08 480 T7W B02 480 T7W B09 480 T7W B03 480

18 24

30 36

Including Restrictor valve • Capillary tube

w Restrictor valve and capillary tube have been added to "Specifications" of heat exchanger.

ELECTRICAL PARTS PKH18FL

PKH24FL PKH30FL PKH36FL

32·33

1

31

30

2

3 5

27

26

29

28

25

24

23

4

6

22

21

7

8

15

20

19

14

9

12 13

10

w

48

16 17 1811

No.

Parts No. Parts Name Specifications

T7W E13 529

6

T7W E14 529

7

R01 12G 621

8

R01 12G 063 R01 12G 002

9

R01 16G 002

10

R01 KV5 527

11

R01 12G 223

12

T7W E12 202

13

R01 E02 202

14

R01 377 246

15

R01 998 246

16

T7W E03 255

17

T7W E24 310

18

T7W 410 239

19

R01 E02 313 R01 479 215

20

R01 673 215 R01 12G 105

21

R01 16G 105 T7W B00 762

22

T7W B01 762

23

R01 E00 075

24

T7W E07 714

25

R01 E01 049

26

R01 12G 103

27

R01 KV5 102 R01 12G 706

28

T7W 589 706

29

R01 20J 303

30

T7W B00 700 T7W 587 300

31

T7W 589 300

32

T7W B02 675

33

T7W B03 675

DRAIN PAN DRAIN PAN CENTER COVER JOINT SHAFT AUTO VANE AUTO VANE DRAIN HOSE VANE MOTOR ROOM TEMPERATURE THERMISTOR PIPE TEMPERATURE THERMISTOR TERMINAL BLOCK TERMINAL BLOCK FAN MOTOR CAPACITOR CONTROLLER BOARD FUSE POWER BOARD RELAY RELAY RUBBER MOUNT RUBBER MOUNT FAN MOTOR FAN MOTOR WIRELESS REMOTE CONTROLLER HOLDER WIRELESS REMOTE CONTROLLER REMOTE CONTROLLER DOOR SLEEVE BEARING BEARING MOUNT THERMAL FUSE THERMAL FUSE INSULATOR THERMAL SWITCH HEATER ELEMENT HEATER ELEMENT FAN GUARD FAN GUARD

Q'ty / set

24

18 FL

FL

1

2

1

ROOM TEMPERATURE

PIPE TEMPERATURE (INDOOR COIL)

3P(L1, L2, GR) 3P(1, 2, 3)

2.5µF 440V

250V 6A

LY1F DC12V LY2F DC12V

PN4N45-K PN4N70-K

243°F 10A 250V 243°F 16A 250V

240V 700W 240V 800W

1

2

1

2

1

3

2

PKH

30 36

FLFL

1

2

1

2

1

2

1

3

2

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

MV RT1 RT2 TB2 TB4

C

I.B

F1.2<I.B>

P.B 88H 88H

MF

W.R

FS1.2 FS1.2

26H

H H

49

STRUCTURAL PARTS PKH18FL PKH24FL PKH30FL

1

PKH36FL

2

3

10

9

8

7

4

Part number that is circled is not shown in the figure.

No.

Parts No. Parts Name Specifications

R01 12G 662

1

R01 E01 812

2

R01 E00 812 R01 E00 811

3

R01 E01 811 R01 A17 500

4

R01 50J 317

5

R01 24K 658

6

T7W E00 661

7

R01 12G 691

8

R01 12G 808

9

R01 16G 808 R01 E01 641

10

R01 E00 641 R01 16G 692

11

R01 12G 523

12

LEFT SIDE PANEL UNDER PLATE UNDER PLATE NOSE NOSE FILTER W.A. CONT (A) RECEIVER RIGHT SIDE PANEL INTAKE GRILLE BACK PLATE BACK PLATE TOP PLATE TOP PLATE INTAKE GRILLE DRAIN SOCKET

18

FL

1 1

1

4 1 1 1 2 1

1

Q'ty / set

PKH

24 30

FL

1 1

1

4 1 1 1 2 1

1

FL

1

1 5 1 1 1 2

1

1 1 1

6

5

Wiring

Diagram

Symbol

36

(Drawing No.)

FL

1

1 5 1 1 1 2

1

1 1 1

Remarks

50

TM

New publication, effective Nov. 2003 Specifications 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.

Mitsubishi Electronics PKH30FL, PKH36FL, PKH18FL, PKH24FL User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual