Mitsubishi Electronics PCH24GK, PCH36GK, PCH30GK, PCH42GK User Manual

PCH24GK PCH30GK PCH36GK PCH42GK

CONTENTS

1. FEATURES·····································································································OC277- 2

2. PART NAMES AND FUNCTIONS··································································OC277- 4

3. SPECIFICATIONS ··························································································OC277- 7

4. DATA ···············································································································OC277- 8

5. OUTLINES AND DIMENSIONS ·····································································OC277-19

6. REFRIGERANT SYSTEM DIAGRAM····························································OC277-21

7. WIRING DIAGRAM·························································································OC277- 22

8. OPERATION FLOW-CHART··········································································OC277-23

9. MICROPROCESSOR CONTROL ··································································OC277-27

10. TROUBLESHOOTING····················································································OC277-43

11. SYSTEM CONTROL ·······················································································OC277-50

12. DISASSEMBLY PROCEDURE ·······································································OC277-55

13. PARTS LIST····································································································OC277- 60

14. OPTIONAL PARTS ·························································································OC277-67

OC277-1

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

SWING

FAN SPEED

AUTO RETURN

Unifies the air speed with the vane.

Sending the air to the upper area of the vane

Prevents the air comes from cntering from outside the unit

Protruding portion B

Protruding portion A

Flockless vane

Air outlet

FEATURES

Microprocessor

Indoor unit

Remote controller

Models Cooling capacity / Heating capacity SEER

PCH24GK 24,000 / 27,000 (35,500) Btu/h 10.3 PCH30GK 30,000 / 33,000 (42,500) Btu/h 10.0 PCH36GK 35,400 / 38,000 (47,500) Btu/h 10.3 PCH42GK 42,000 / 45,000 (52,500) Btu/h 10.3

1. AIR OUTLET

New PCH series models have 1 air outlet (auto vane switching of horizontal air flow / down flow by switched by auto vane) instead of 2 (horizontal,and down flows).

2. EASY TO CLEAN ; FLOCKLESS VANE

With our original air current control mechanism, a flockless vane is newly adapted. The flockless vane prevents the condensation on the vane. By changing the vane to the flockless type, the unit can be cleaned much easier with mild household detergent.

3. NEW MATERIALS FOR BETTER OIL RESISTANCE

We have changed the materials of grill, filer, fan and fan casing from ABS to P.P. (polypropylene) for better oil resistance. As a result, oil crazing is cut in half.

4. SIMPLIFIED INSTALLATION WORK (DIRECT SUSPENDING METHOD)

Simplified the installation work by changing the suspending method to the direct suspending method (suspending the unit directly from the suspension fixture).

In this way, the unit can be attached to the suspension fixture without removing the installation parts off (Only the

side cover is removed). This method is much simpler than the “One-time installation method”.

OC277-2

5. IMPROVING EFFICIENCY OF PIPING WORK

Back panel

U-cut

Side panel

L : Liquid pipe G : Gas pipe D : Drain pipe

L G D

open

Removed the knockout work by separating the piping

space from the air outlet for efficiency of the piping work.

Improved the flexibility by making it possible for drainage pipe to exit not only from the right side back but also from the left side back.

Rubber plug

Insulation cover (attached)

Drain pipe (purchased locally)

w Knockout work is needed for the top part. When option-

al drain-up machine is installed, the refrigerant pipe

Drain pan

Joint coupliy (attached)

Insulation cover

Band (attached)

w Please move the rubber plug for the unit to the right joint

when drainage pipe exits from the left side.

exits out from the top.

6. EASY MAINTENANCE ; NO MAINTENANCE NECESSARY FOR 2500 HOURS

The new long-life air filter can be used continuously 2500 hours without maintenance (at general office situation).

7. STABLE COOLING EVEN AT OUTDOOR TEMPERATURES AS LOW AS 23˚F MAKES YEAR-ROUND AIR-CONDITIONING POSSIBLE

The microprocessor automatically adjusts fan speed in accordance with outdoor temperature to maintain the coolant at an even condensing temperature. The result is smooth, efficient cooling even when temperatures outdoors drop as low as 23˚F. This makes the unit ideal for a wide range of specialised cooling needs, such as rooms with many office machines or computers and areas subject to strong sunlight.

OC277-3

Air outlet

Intake grille

Air intake

Left/right guide vanes

Change the direction of airflow from the horizontal blower.

Long-life fillter

Removes dust and foreigh matter from air coming in through the grille (Recommended cleaning interval : Approx, every 2,500 operating hours)

Up/down guide vanes

Change the direction of airflow from the vartical blower.

PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

OC277-4

TIMER OFF TIMER CHECK SET TEMP.

DRY COOL AUTO HEAT

CLOCK AUTO AUTO START STOP

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

CHECK

TEST RUN

AIR SWEEP

SET TEMP. TIMER SET

FAN SPEED

AUTO

RETURN

REMOTE CONTROLLER

Remote controller

Once the controls are set, the same operation mode can be repeated by simply pressing the ON / OFF button.

Remote controller operation buttons

TIMER ON/OFF button

This switches between continuous operation and the timer operation.

OPERATION MODE button

Press this button to switch the cooling, electronic dry (Dehumidify), automatic and heating modes.

SET TEMPERATURE button

This sets the room temperature. The temperature setting can be performed in 2˚F units.

Setting range :

Cooling 65˚F to 87˚F Heating 61˚F to 83˚F

CLOCK/TIMER button

This sets or switches the current time,start time and stop time.

FAN SPEED button

This sets the ventilation fan speed.

ON/OFF button

This switches between the operation and stop modes each time it is press. The lamp on this button lights during operation.

AIR DISCHARGE button

This adjusts the vertical angle of the ventilation.

FILTER button

This resets the filter service indication display.

AIR SWEEP button

This switches the horizontal fan motion (Swing louver) ON and OFF.

OC277-5

CHECK-TEST RUN button

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

Remote controller display

CENTRALLY CONTROLLED display

This indicates when the unit is con-

trolled by optional features such as central control type remote controller.

TIMER display

This indicates when the continuous

operation and time operation modes are set.

It also display the time for the timer

operation at the same time as when it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

This indicates when the standby

mode is set from the time the heat operation starts until the heating air is discharged.

CLOCK display

The current time , start time and stop time can be displayed in ten second intervals by pressing the time switch button. The start time or stop time is always displayed during the timer operation.

TIMER OFF TIMER

DRY COOL AUTO HEAT

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

REMOTE CONTROLLER

CLOCK AUTO AUTO

CHECK SET TEMP.

START STOP

SET TEMP. TIMER SET

FAN SPEED

RETURN

In this display example on the bottom left, a condition where all display lamps light is shown for explanation purposes although this differs from actual operation.

AIR DISCHARGE display

This displays the air direction.

FAN SPEED display

The selected fan speed is displayed.

display

AUTO

AIR SWEEP

CHECK

TEST RUN

The temperature of the return air is displayed during operation. The display range is 47°F to 97°F. The display flashes 47°F when the actual temperature is less than 47°F and flashes 97°F when the actual temperature is greater than 97°F.

Operation lamp

This lamp lights during operation, goes off when the unit stops and flashes when a malfunction occurs.

DEFROST display

This indicates when the defrost oper-

ation is performed.

CHECK display

This indicates when a malfunction

has occurred in the unit which should be checked.

display

This displays the selected setting temperature.

display

This lamp lights when electricity is supplied to the unit.

CHECK MODE

TEST RUN

This display lights in the check mode or when a test operation is performed.

FILTER

This lamp lights when the filter needs to be cleaned.

display

Caution

● Only the display lights when the unit is stopped and power supplied to the unit.

● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a malfunction.

●When the central control remote control unit, which is sold separately, is used the ON-OFF button,OPERA TION MODE button and SET

TEMP. button do not operate.

OC277-6

SPECIFICATIONS3

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. (On a local side)

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 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

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

in. in. in. in.

V,phase,Hz

A A

F.L.A.

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

A(W

)

in. in. in.

in. in.

ft ft

PCH24GK

Model

24,000 27,000[34,000/35,500] 14,800[21,800/23,300]

4.6

2.51

2.46[4.49/4.94]

1.95[3.98/4.43]

9.6

10.3

6.8

3.2

2.2

PCH24GK

20 15

1.1

9.8/10.8<2.0/2.5> 880-710 810-640

48-43

51-9/16

26-3/4 10-5/8

PUH-24EK

20 16

0.65+0.65

NH33NBD

11.5 54

0.16/0.17<33/39>

34-1/4 11-5/8

49-9/16

202

3/8 5/8

PCH30GK

30,000 33,000[40,500/42,500] 20,000[27,500/29,500]

4.3

3.23

3.00[5.25/5.76]

2.58[4.83/5.34]

9.3

10.0

7.0

3.2

2.3

PCH30GK

25 17

1.3

10.8/12.0<2.3/2.8>

51-45

101

PUH30EK

30 20

0.75+0.75

NH41NAD

14.0 73

0.16/0.17<33/39>

245

Munsell 0.70Y 8.59/0.97

208/230,1,60

Munsell 5Y 7/1

208/230,1,60

Capillary tube Reverse cycle

With indoor unit

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

Not supplied (optional parts)

3/4 Flared Flared

164 165

PCH36GK

35,400 38,000[45,500/47,500] 21,000[28,500/30,500]

6.3

3.60

3.32[5.57/6.08]

2.63[4.88/5.39]

9.8

10.3

7.0

3.4

2.3

PCH36GK

25 17

1.3

10.8/12.0<2.3/2.8> 1,240-990 1,130-880

51-45

1 63-3/4 26-3/4 10-5/8

PUH36EK

30 22

0.75+0.75

NH47NAD

17.5 87

0.16/0.17<33/39>

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

246

1/2

PCH42GK

42,000 45,000[52,500/54,500] 23,800[31,300/33,300]

10.3

4.10

3.76[6.01/6.52]

3.00/[5.25/5.76]

10.5

10.3

7.2

3.4

2.3

PCH42GK

25 17

1.3

10.8/12.0<2.3/2.8>

51-45

PUH42EK7

40 28

0.8+0.8

ZR42K3PFV

20.4 109

0.16/0.17<33/39>

268

7/8

Item

106

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

Operating range

Indoor intake air temperature

D.B. 95˚F, W.B. 71˚F D.B. 67˚F, W.B. 57˚F D.B. 80˚F, W.B. 67˚F D.B. 70˚F, W.B. 68˚F

Outdoor intake air temperature

D.B. 115˚F

D.B. 0˚F *

D.B. 75˚F, W.B. 65˚F

D.B. 17˚F, W.B.15˚F

Cooling

Heating

Maximum

Minimum

Maximum

Minimum

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

MODELS : PCH24GK, PCH30GK, PCH36GK, PCH42GK

OC277-7

4 DATA

Models

Indoor air Outdoor intake air D.B. temperature (˚F

)

PCH24GK

71 67 63

62.5 60 59 71 67 63

62.5 60 59

28.5

26.8

25.1

24.8

23.8

23.4

35.7

33.4

31.3

31.0

29.8

29.3

42.1

39.5

37.0

36.6

35.2

34.6

50.0

46.8

43.8

43.4

41.7

41.0

SHC

18.6

21.1

23.1

20.6

19.8

19.4

25.0

28.1

30.4

27.4

26.2

25.7

27.9

31.6

34.4

30.8

29.5

28.9

29.6

34.2

37.8

33.5

32.1

31.4

TPC

2.08

2.04

2.00

1.99

1.97

1.96

2.68

2.63

2.57

2.53

2.52

2.99

2.93

2.87

2.86

2.82

2.81

3.41

3.34

3.27

3.26

3.22

3.20

27.9

26.0

24.3

24.1

23.1

22.7

34.9

32.6

30.4

30.1

28.9

28.4

41.2

38.4

35.9

35.5

34.1

33.5

48.9

45.6

42.6

42.1

40.4

39.7

SHC

18.2

20.6

22.4

20.0

19.2

18.7

24.5

27.3

29.5

26.6

25.4

24.8

27.3

30.7

33.4

29.9

28.6

28.0

28.9

33.3

36.7

32.5

31.1

30.4

TPC

2.19

2.14

2.09

2.06

2.05

2.81

2.75

2.69

2.65

2.64

3.14

3.07

3.00

2.99

2.95

2.94

3.57

3.49

3.42

3.41

3.37

3.35

27.0

25.2

23.5

23.2

22.3

21.9

33.8

31.5

29.3

29.1

27.9

27.4

39.9

37.1

34.6

34.3

32.9

32.3

47.3

44.0

41.1

40.7

39.0

38.3

SHC

17.6

19.9

21.6

19.3

18.5

18.1

23.7

26.4

28.5

25.6

24.5

24.0

26.4

29.7

32.3

28.9

27.6

27.0

28.0

32.1

35.4

31.4

30.0

29.3

TPC

2.35

2.30

2.25

2.24

2.21

2.19

3.03

2.96

2.89

2.88

2.84

2.82

3.38

3.30

3.22

3.21

3.16

3.14

3.85

3.76

3.67

3.66

3.60

3.58

25.8

24.0

22.4

22.1

21.2

20.8

32.3

30.0

27.9

27.7

26.5

26.0

38.1

35.4

33.0

32.7

31.3

30.7

45.2

42.0

39.1

38.7

37.1

36.4

SHC

16.8

19.0

20.6

18.4

17.6

17.2

22.7

25.2

27.2

24.4

23.3

22.8

25.2

28.3

30.7

27.5

26.3

25.7

26.8

30.7

33.7

29.9

28.6

27.9

TPC

2.58

2.51

2.44

2.40

2.38

3.32

3.23

3.15

3.13

3.09

3.06

3.70

3.60

3.51

3.49

3.44

3.41

4.21

4.10

3.99

3.98

3.92

3.89

24.6

22.8

21.2

21.0

20.1

19.7

30.7

28.5

26.5

26.2

25.1

24.6

36.2

33.6

31.2

30.9

29.6

29.0

43.0

39.9

37.1

36.7

35.1

34.4

SHC

16.0

18.0

19.5

17.4

16.7

16.3

21.6

23.9

25.7

23.1

22.1

21.5

24.0

26.9

29.1

26.0

24.9

24.3

25.4

29.1

31.9

28.3

27.0

26.4

TPC

2.81

2.72

2.64

2.63

2.59

2.57

3.62

3.50

3.40

3.39

3.33

3.31

4.03

3.91

3.79

3.78

3.72

3.69

4.59

4.45

4.32

4.30

4.23

4.20

23.5

21.7

20.1

19.9

19.1

18.7

29.3

27.1

25.2

24.9

23.8

23.3

34.6

32.0

29.7

29.4

28.1

27.5

41.1

38.0

35.2

34.9

33.3

32.7

SHC

15.3

17.2

18.6

16.6

15.8

15.4

20.6

22.8

24.5

22.0

21.0

20.4

22.9

25.6

27.7

24.8

23.6

23.0

24.3

27.7

30.4

26.9

25.7

25.0

TPC

3.01

2.90

2.81

2.80

2.75

2.73

3.88

3.73

3.62

3.60

3.54

3.51

4.32

4.16

4.03

4.02

3.95

3.91

4.92

4.74

4.59

4.58

4.50

4.46

I.W.B.

(˚F)

65 75 85 95 105 115

810

0.10

Airflow

(

CFM

)

B.F

PCH30GK

1,130

0.08

PCH36GK

1,130

0.01

PCH42GK

1,130

0.04

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

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

Btu/h)

TPC : Total Power Consumption (kW)

2. SHC is based on D.B. 80˚F of indoor intake air temperature.

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

MODEL

Refrigerant piping length (one way)

PCH24GK PCH30GK PCH36GK PCH42GK

1.0

25ft

0.981

0.975

40ft

0.968

0.986

0.968

0.955

55ft

0.952

0.935

70ft

0.940

0.918

85ft

0.925

0.900

100ft

0.913

0.884

115ft

0.900

0.869

130ft

0.886

0.855

150ft

0.874

0.840

164ft

D.B.75°F (50%RH) D.B.72°F (50%RH) D.B.70°F (50%RH)

MODELS : PCH24GK, PCH30GK, PCH36GK, PCH42GK

1. PERFORMANCE DATA

1) COOLING CAPACITY

OC277-8

2) HEATING CAPACITY

Indoor air Outdoor intake air W.B. temperature(˚F

Models

Airflow

(CFM)

I.D.B.

(˚F)

15 25 35 45 55 65

17.8

1.91

20.4

2.11

23.9

2.37

27.1

2.60

31.3

2.89

)

35.0

Auxiliary heater

3.15

6.8

208V 230V

2.0

PCH24GK

PCH30GK

PCH36GK

PCH42GK

Notes 1. I.D.B. : 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.

880

1,240

18.2

1.84

20.9

2.04

18.6

1.77

21.4

1.96

21.8

2.32

25.0

2.57

22.2

2.25

25.5

2.48

22.8

2.16

26.1

2.39

25.0

2.57

28.7

2.85

25.6

2.49

29.4

2.75

26.2

2.39

30.1

2.64

29.7

2.91

34.0

3.23

30.3

2.82

34.8

3.11

31.1

2.71

35.6

2.99

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

24.4

25.0

29.2

29.9

30.5

33.7

34.4

35.2

39.9

40.7

41.6

2.29

2.20

2.89

2.79

2.68

3.20

3.08

2.96

3.63

3.49

3.36

27.7

28.2

33.1

33.8

34.5

38.1

38.9

39.8

45.2

46.1

47.1

2.50

2.41

3.17

3.05

2.93

3.51

3.38

3.25

3.98

3.83

3.68

31.8

32.5

38.2

38.9

39.7

44.0

44.8

45.7

52.1

53.0

54.1

2.78

2.67

3.53

3.39

3.26

3.91

3.76

3.61

4.42

4.25

4.09

35.6

36.3

42.8

43.5

44.3

49.3

50.0

51.0

58.4

59.3

60.4

3.03

2.91

3.84

3.69

3.55

4.25

4.09

3.93

4.81

4.63

4.45

8.5

7.5

9.6

7.5

9.6

7.5

9.6

2.5

2.2

2.8

2.2

2.8

2.2

2.8

Models

PCH24GK PCH30GK PCH36GK PCH42GK

Refrigerant piping length (one way)

Less than 100ft

1.00

100~130ft

0.995

130~164ft

0.990

OC277-9

2. PERFORMANCE CURVE

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air DB temperature ( F)

3.0

2.5

2.0

1.5

SHF=0.79

32 35

45 55

65(67)

75 85 95 105 115

Indoor intake air W.B. temperature ( F)

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air WB temperature ( F)

3.0

2.5

2.0

1.5

Not include booster heater (2.5kW)

15 25 35 45 55 65

Indoor intake air D.B. temperature ( F)

NOTES : Apoint on the curve shows the reference point.

PCH24GK COOLING CAPACITY PCH24GK HEATING CAPACITY

PCH30GK COOLING CAPACITY PCH30GK HEATING CAPACITY

Btu/h)

4.0

3.5

3.0

2.5

2.0

Total power consumption (kW) Total capacity (x10

32 35

Outdoor intake air DB temperature ( F)

Indoor intake air W.B. temperature ( F)

45 55

65(67)

75 85 95 105 115

SHF=0.84

Btu/h)

71 67

71 67 63

4.0

3.5

3.0

2.5

2.0

Total power consumption (kW) Total capacity (x10

OC277-10

Not include booster heater (2.8kW)

Indoor intake air D.B. temperature ( F)

15 25 35 45 55 65

Outdoor intake air WB temperature ( F)

65 70 75

75 70 65

NOTES : Apoint on the curve shows the reference point.

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air DB temperature ( F)

4.5

4.0

3.5

2.5

3.0

SHF=0.80

32 35

45 55

65(67)

75 85 95 105 115

Indoor intake air W.B. temperature ( F)

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air WB temperature ( F)

4.5

4.0

3.5

3.0

2.5

Not include booster heater (2.8kW)

15 25 35 45 55 65

Indoor intake air D.B. temperature ( F)

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air DB temperature ( F)

3.0

4.0

3.5

SHF=0.73

32 35

45 55

65(67)

75 85 95 105 115

Indoor intake air W.B. temperature ( F)

4.5

5.0

Total power consumption (kW) Total capacity (x10

Btu/h)

Outdoor intake air WB temperature ( F)

5.0

4.5

4.0

3.5

3.0

Not include booster heater (2.8kW)

15 25 35 45 55 65

Indoor intake air D.B. temperature ( F)

PCH36GK COOLING CAPACITY PCH36GK HEATING CAPACITY

PCH42GK COOLING CAPACITY PCH42GK HEATING CAPACITY

OC277-11

3. CONDENSING PRESSURE AND SUCTION PRESSURE

360 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 190 180 170 160 150

(psi.G)

Condensing pressure

30 40 50 60 70 80 90 100 110

Outdoor ambient temperature

D.B.( F)

Indoor D.B.

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

D.B.( F)

86 80 75 70

Indoor D.B. 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

D.B.( F)

Indoor D.B. 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

D.B.( F)

75 70 65

Indoor D.B. temperature( F)

75 70 65

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>

PCH24GK

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

< Heating mode>

PCH24GK

OC277-12

PCH24GK

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

D.B.( 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

D.B.( F)

86 80 75 70

Indoor D.B. 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

D.B.( F)

75 70 65

Indoor D.B. 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

D.B.( F)

75 70 65

Indoor D.B. temperature( F)

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

< Cooling mode>

PCH30GK

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

< Heating mode>

PCH30GK

OC277-13

PCH30GK

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

D.B.( 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

D.B.( F)

86 80 75 70

Indoor D.B. 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

D.B.(°F)

75 70 65

Indoor D.B. 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

D.B.(°F)

75 70 65

Indoor D.B. temperature(°F)

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

< Cooling mode>

PCH36GK

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

< Heating mode>

PCH36GK

OC277-14

PCH36GK

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

D.B.(°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

D.B.(°F)

86 80 75 70

Indoor D.B. 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

D.B.(°F)

75 70 65

Indoor D.B. 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

D.B.(°F)

75 70 65

Indoor D.B. temperature(°F)

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

< Cooling mode>

PCH42GK

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

< Heating mode>

PCH42GK

OC277-15

PCH42GK

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

A A A

A psi.G psi.G

˚F ˚F ˚F ˚F

r.p.m.

CFM

˚F ˚F

r.p.m.

CFM

Btu/h

208/230

2.51

1.1

0.65+0.65

11.3/10.4 242

82 161 115

48 144

1,100

810

24,000

0.79

Cooling

208/230

2.46

1.1

9.8/10.8

0.65+0.65

10.9/10.2 227

62 155 111

35 132

60 100

1,070

880

27,000

Heating

PCH24GK

208/230

3.23

1.3

0.75+0.75

14.5/13.3 250

164

115

156

80 67 60

59 1,190 1,130

30,000

0.84

Cooling

208/230

3.00

1.3

10.8/12.0

0.75+0.75

13.4/12.5 221

59 155 108

34 145

1,150 1,240

33,000

Heating

PCH30GK

208/230

3.60

1.3

0.75+0.75

16.51/15.1 253

82 164 117

50 153

1,220 1,130

35,400

0.80

Cooling

208/230

3.32

1.3

10.8/12.0

0.75+0.75

15.0/14.0 225

62 155 109

35 138

60 101

1,200 1,240

38,000

Heating

PCH36GK

208/230

4.10

1.3

0.8+0.8

18.8/17.3 272

76 173 122

119

1,220 1,130

42,000

0.73

9 lbs 15 oz

750/750

3,170

760/760

3,350

760/760

3,350

840/840

3,530

10 lbs 2 oz

10 lbs 9 oz

11 lbs 0 oz

Cooling

208/230

3.76

1.3

10.8/12.0

0.8+0.8

17.2/16.0 246

59 153 115

60 105

1,200 1,240

45,000

Heating

PCH42GK

Intake air temperature

Discharge air temperature

Intake air temperature

Capacity SHF

D.B.

W.B.

D.B.

W.B.

D.B.

W.B.

OC277-16

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

D.B.(˚F

80 95 67 80 70 80 70

Indoor

)

W.B.(˚F

6. OUTLET AIR SPEED AND COVERAGE RANGE

Model

PCH24GK PCH30GK PCH36GK

Airflow

(

CFM

880 1,240 1,240

)

Air speed

(

)

ft/sec

13.5

14.8

Coverage

range(ft

40 50 50

)

Outdoor

D.B.(˚F

115

23 80 47 75 17

)

W.B.(˚F

)

67 71 57 75 60 67 60

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.

)

75 — — 75 43 65 15

PCH42GK

1,240

14.8

7. ADDITIONAL REFRIGERANT CHARGE (R22(oz))

Refrigerant piping length (one way)

100ft

85ft

70ft

55ft

Model

PCH24GK PCH30GK PCH36GK PCH42GK

Outdoor unit

precharged

(

up to 100ft

9 lbs 15 oz 10 lbs 2 oz 10 lbs 9 oz

11 lbs 0 oz

)

25ft

0 0 0 0

40ft

0 0 0 0

OC277-17

115ft

2 5 5 5

130ft

4 10 10 10

150ft

7 16 16 16

164ft

9 20 20 20

8. NOISE CRITERION CURVES

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

PCH24GK

NOTCH

48 42

SPL(db)

LINE

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

PCH30GK PCH36GK PCH42GK

Hi Lo

NOTCH

51 45

SPL(db)

LINE

3.3ft

unit

about 4.62ft

MICROPHONE

ceiling

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

OC277-18

9-1/32

2-3/4

Electrical box

Knock out hole for upper drain pipe arrangement

Knock out hole for fresh air intake

51-9/16

10-5/8

or more

11-13/16

or more

1/16

Less than

9-7/8

19-11/16 or more

Less than 26-3/4

7-3/16

7-13/16

9-5/8

8-9/16

5/8

3-7/16

3-1/812-5/8

48-7/8

8-5/32

10-5/8

3-3/16 3-25/32

47-13/16

51-9/16

26-3/4

19-7/8

2-3/16

3-9/166-5/16

48-3/8

1/169-5/16

7-9/16

1-3/4

3-3/8

5-7/16

6-3/4

10-3/8

1-1/2 5-1/2

1-1/2

1-3/4

5-15/16

27-1/16

7-7/8 13

48-5/8

20-11/16

3-11/16

6-5/16

8/32~9/32

1-5/8 9-7/16

(inch)

(Suspension bolt pitch)

Ceiling

Rear wall

Allowing clearances

(Gap to ceiling)

(3/8F)liquid

(5/8F)gas

(Drainage)

Air intake

Air outlet

When electrical box

is pulled down

[FRONT VIEW]

Ceiling

Electrical box

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for wiring arrangement

Knock out hole for left drain pipe arrangement

Drainage pipe connection(On a local side 1-1/32IN.O.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

NOTES.

1.Use W3/8 screw for anchor bolt.

OUTLINES AND DIMENSIONS

Indoor unit PCH24GK

Unit:inch

OC277-19

Indoor unit PCH30/36/42GK

9-1/32

2-3/4

Refrigerant-pipe connection(liquid pipe side/flared connection)

Knock out hole for wiring arrangement

Knock out hole for left drain pipe arrangement

(inch)

Drainage pipe connection(On a local side 1-1/32IN. O.D.)

Drainage pipe connection(for the left arrangement)

Knock out hole for left drain-piping arrangement

Refrigerant-pipe connection(gas pipe side/flared connection)

NOTES.

1.Use W3/8 screw for anchor bolt.

(Suspension bolt pitch)

Air intake

(Gap to ceiling)

Ceiling

Rear wall

Allowing clearances

Air outlet

Electrical box

When electrical box

is pulled down

[FRONT VIEW]

Ceiling

Electrical box

576

(Drainage)

(3/4F)gus

(1/2F)liquid

8/32~9/32

3-11/166-5/16

5-1/21-1/2

1-1/2

1-3/4

5-15/16

7-9/16

1/169-5/161-3/4

3-3/8

5-7/16

6-3/4

7-7/8 13

10-3/8

27-1/16

20-11/16

60-13/16

1-5/8 9-7/16

3-1/812-5/8

60-7/8

2-3/16

26-3/4

19-7/8

3-9/166-5/16

60-7/16

63-3/4

3-3/16 3-25/32

8-5/32

10-5/8

8-9/16

5/8

3-7/16

7-3/16

7-13/16

9-5/8

Less than 26-3/4

or more

10-5/8

or more

11-13/16

63-3/4

9-7/8

Less than

19-11/16 or more

1/16

Knock out hole for upper drain pipe arrangement

Knock out hole for fresh air intake

Unit:inch

OC277-20

Remote controller

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

SWING

FAN SPEED

5-1/8

4-3/4

3/4

3/32

23/32

AUTO

RETURN

Pipe temperature thermistor / Liquid (RT2)

Distributor

({0.126O{0.071O15.7)

Restrictor valve

Capillary tube

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

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

Strainer

Refrigerant flow

HEATING COOLING

Distributor

Restrictor valve

Capillary tube

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

Refrigerant pipe (option)

{7/8" (PCH42GK) {3/4" (PCH30/36GK)

(with heat insulator)

Strainer

PCH30GK ({0.157O{0.079O15.7) PCH36GK ({0.157O{0.094O21.7) PCH42GK ({0.157O{0.094O25.6)

Pipe temperature thermistor / Liquid (RT2)

REFRIGERANT SYSTEM DIAGRAM6

Unit : inch

PCH24GK

PCH30GK PCH36GK PCH42GK

OC277-21

TRANSMISSION WIRES DC12V

ZNR

LED2LED1

F2 F1

RED BLU

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

TB2

WHT

BLK

POWER CNDK (WHT)

TRANS

CNSK (RED)

(DC13.1V) CN2S (WHT)

P.B

(AC208/230V)

W.B

CN2

CN1

OFF

SW17

87654321

SW18

TRANSMISSION WIRES DC12V

123

54321

REMOCON POWER CN40 (WHT)

4 3 2 1

CENTRALLY CONTROL CN51

LOSSNAY CN2L

TB5

BLU BLU

REMOCON CN22 (BLU)

SW9

12345

ON OFFOFF

SW3

2 1

SW7SW6SW2 SW5 SW8 SW1

1231234123456123456789101234123456

TB3

OUTDOOR UNIT

TB4

BRN ORN YLW

GRY

YLW

88H2

THERMAL FUSE<230°F/16A:30,36,42GK>

SWITCH(FUNCTION SELECTOR)

SW18

SWITCH(ADDRESS SELECTOR)

SW17

CONNECTOR(REMOTE SWITCH)

CN2

(32°F/15k",77°F/5.4k" DETECT)

SWITCH(MODEL SELECTOR)

SWITCH(OPTION)

SWITCH(MODEL SELECTOR)

SW7 SW8 SW9

SWITCH(MODEL SELECTOR)

SWITCH(EMERGENCY OPERATION)

SWITCH(ADDRESS SELECTOR)

SWITCH(FUNCTION SELECTOR)

SW2

SW1

123456

123

I.B

RED

BLU

RED

WHT

BLK

WHT

BLK

FAN (WHT)

135

OFF

POWER CND (RED)

TB6

B02A01

INTAKE CN20 (RED)

OUT DOOR CN30 (BLU)

RT1 RT2

BLK

PIPE CN21 (WHT)

CNB

LED2

LED1 SW1SW2

R.B

VANE CN6V (WHT)

CN2D (WHT)

13 21

WIRELESS CN90 (WHT)

GRN/YLW

88H2

88H1

BLU

RED

RED BLU

TB2

1 2

RED WHT

FS1 FS2

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

23ON1

OFF

23ON1

OFF

23ON1

OFF

23ON1

OFF

I.B

HEATER CN24 (YLW)

YLW

88H1

GRY

6 5

26H

RED

MODELS

SW7

LED(DC5V POWER)

LED2

VANE MOTORMV

LED(DC12V POWER)

VARISTOR

LED1

ZNR

SWITCH(COOLING ON/OFF)

SW2

SW1

LED2

RU LED1

W.B

LED(RUN INDICATOR) SWITCH(HEATING ON/OFF)

LED(HOT ADJUST)

BUZZER

RECEIVING UNIT

WIRELESS REMOTE CONTROLLER BOARD(OPTION)

THERMAL FUSE<243°F/16A:24GK>

TERMINAL BLOCK(REMOTE CONTROLLER

HEATER CONTACTOR

HEATER THERMAL SWITCH

HEATER

88H1,2

26H

FS1,2

TRANSMISSION LINE)

CONNECTOR(PROGRAM TIMER)

REMOTE CONTROLLER BOARD

TB6

CN1

NAME

HEATER

R.B

TRANSMISSION LINE)

TERMINAL BLOCK(REMOTE CONTROLLER

TB5

P.B

PIPE TEMP .THERMIST OR/LIQUID

RT2

RT1 ROOM TEMP.THERMISTOR

(32°F/15k",77°F/5.4k" DETECT)

TERMINAL BLOCK(POWER)

TERMINAL BLOCK(INDOOR/OUTDOOR TRANSMISSION LINE)

TB4

TB2

FAN MOTORMF

CAPACITOR(FAN MOTOR)C

FUSE(6A/250V)

RELAY(FAN MOTOR)

SWITCH(TWIN/TRIPLE SELECTOR)

FAN PHASE CONTROL

CONNECTOR(CENTRALLY CONTROL)

CONNECTOR(LOSSNAY)

F1,F2

SW6

SW5

SW3

CN51

CN2L

INDOOR CONTROLLER BOARD

INDOOR POWER BOARD

I.B

NAME

SYMBOL

NAME

SYMBOLSYMBOL

(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 automatic 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 switch (SW3<I.B>) to OFF. (7)Movement of the vane does not work in emergency operation, therefore you have to slowly set them manually to the appropriate position.

SW8

ON OFF

123456

ON OFF

1.Since the indoor fan motor(MF)is connected with 230V power, using 208V power will require a setting change of the dip switch(SW8<I.B>) on indoor controller board as shown in fig:*1.

NOTES:

Indoor fan motor(MF)for 208V.

fig:*1

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.

6.Fasten terminal of the terminal board "TB4" equips lock system. To remove the fasten terminal, pull it while pressing the protruding portion (locking lever) of the terminal. Connection of the fasten terminal, protruding portion should face upward.

(1)Make sure that no other trouble exist in the outdoor unit. Trouble with the outdoor unit prevents emergency operation. (If any trouble exists in the outdoor unit error code "P8" will be displayed on the remote controller and the trouble position will be shown on the outdoor controller board LED. See electric wiring diagram of the outdoor unit for details.) (2)Make sure that there is no trouble with the indoor fan. Emergency operation will be continuous operation mode. (ON/OFF by the remote controller is not possible.)

[Check items]

[Emergency operation procedure]

24GK

30GK

36GK

42GK

WIRING DIAGRAM

MODEL PCH24/30/36/42GK

WIRING DIAGRAM

OC277-22

START

Power circuit

breaker

Check SW

ON twice

Operation SW

“OFF” timer

“ON” timer

STOP

Set time

complete

Set time complete

NO 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

OPERATION FLOW-CHART

MAIN OPERATION

w1 In addition, the centralised 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 over flow

● 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.)

OC277-23

COOLING OPERATION

COOL operation

Four-way valve/OFF

Vane setting notch

Initial

COOLING

w 8

Vane initial

setting

Vane 40 deg downward angle 60 deg downward angle

Fan speed

LOW

Downward discharge

1 hour

Vane horizontal

airflow

w 9

Compressor

thermostat

Allowance

cancel

YES

w 11

YES

3-minute

time delay

6-minute

time delay

3-minute

compressor operation

w 10

YES

Coil frost

prevention

Cooling area

YES

Allowance

period

6 minute

time delay

Allowance set

YES

Coil frost protection

YES

10-minute

compressor operation

YES

Allowance cancel

Coil frost

protection

16-minute

compressor operation

YES

Indoor coil

temperature is

34°F or lower

Compressor ON

YES

Coil frost

prevention

Compressor OFF

Indoor coil temperature is 50°F or higher

YES

3-minute

time delay Coil frost

prevention release

1 min continue

FAN speed

YES

LOW

FAN speed LOW 5 min

elapse

YES

Outdoor unit

trouble

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 -59°F or below for 3 minutes, the compressor will

stop for 6 minutes.

w11 Cooling area : Indoor coil temperature is more than 9 degrees above the room temperature.

Heating 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.

OC277-24

DRY OPERATION

DRY

operation

Four-way valve / OFF

Vane

setting notch

YES

Initial dry

operation

YES

Vane initial setting

w 12

Room temperature is

64°F or lower

During

compressor ON

YES

3-minute

compressor

operation

YES

Compressor & thermostat ON

YES

w 8

w 9

YES

3-minute

time delay

Compressor &

thermostat

YES

w 9

Compressor ON

time completes

YES

10-minute compressor

OFF timer start

Compressor OFF

Fan STOP

w8 ~ 9 Refer to page OC277-24. w12 When room temperature is 64°F or below, the compressor cannot operate.

When room temperature rises over 64°F, the compressor starts after a 3-minute time delay.

w13 Compressor ON time is decided by room temperature. Refer to page OC277-33. w14 In dry operation, compressor ON makes the fan speed LOW and compressor OFF stops the fan.

It is not possible to set the fan speed with the remote controller

w 14

10-minute

compressor

OFF

YES

Compressor ON

time set

Compressor ON

Fan speed LOW

OC277-25

w 13

w 14

HEATING OPERATION

Heat operation

Initial

trouble

YES

w 15

YES

3 min.restart

YES

6 min. restart

Hot adjust start

FAN SPEED

Compressor ON

prevention

very low

Vane setting notch

w 9

HEATING

Vane initial setting

Defrosting

Four-way valve ON

Hot adjust

in process

Compressor ON

Compressor

thermostat ON

Allowance cancel

Indoor piping

-5°F or lower

Outdoor unit

FAN SPEED

Very low airflow Compressor OFF

10-minute

compressor

operation

Allowance cancel

w 11

Heating

area

FAN STOP

w 11

Airflow area

20 min.elaspe

YES

Airflow area

Heating area

w 11

Airflow area Cooling area

Defrost operation

START

Four-way valve

OFF

YES

w 10

w 11

Heating area

Defrost

30 min. elaspe

YES

Outdoor unit trouble

Outdoor unit

trouble

YES

Defrost release

Indoor piping

131°F or lower

Auxiliary heater

Indoor piping

140°F or higher

YES

Auxiliary heater

Overheat remote

START

Indoor unit

158°F or higher

Allowance

period

Overload protect

OFF

YES

Auxiliary heater

thermostat ON

Auxiliary heater

6-minute restart

prevention

Allowance set

Compressor OFF

YES

95°F or higher

FAN SPEED

FAN SPEED setting notch

Auxiliary heater

thermistor is 140°F

Airflow 10% up

Indoor piping

HOT adjust

6 min. elapse

YES

Low

FAN SPEED

Low 2 min.

elapse

YES

Hot adjust

release

3-minute

OFF

Indoor coil

or higher

FAN speed

Low notch

YES

FAN setting notch

Auto COOL/HEAT

operation

T1 T0

YES

w 16

YES

HEAT operation

Initial mode

w 17

COOL mode HEAT mode

COOL mode

T1 < (T0 - 2)

After 15min.

T1<(T0-2)

COOL operation

T1>(T0 + 2)

YES

Cool mode

set

After 15min.

T1>(T0 + 2)

HEAT operation

w15 (!) Until Low airflow is set while hot adjustment

(@) While defrosting (FAN STOP) (#) When thermostat is OFF In the case of(!), (@) and (#) 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

OC277-26

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

AUTO

RETURN

MICROPROCESSOR CONTROL

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.

● Swing louver switching.(AIR SWEEP)

● TEST RUN switching.

● CHECK mode switching.

(Self diagnostic trouble shooting)

Indoor unit

INPUT from indoor unit

Remote controller board

● Processes and transmits orders.

12VDC

Indoor controller board

OUTPUT to remote controller

Remote controller

● LCD indicator

Non-polar, two-wire cable

maximum length 550 yards Signal

● Room temperature thermistor (RT1)

● Pipe temperature thermistor (RT2)

OUTPUT to indoor unit

● Auto vane’s angle setting.

● Swing louver control ON-OFF.

● 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.

● Transmits the power to remote controller.

123

Polar three-wire cable

Outdoor unit

12VDC

1 2 3

● Compressor and outdoor fan : ON-

OUTPUT to outdoor unit

OFF

● Operation mode change :COOLHEAT.

OC277-27

2. INDOOR UNIT CONTROL

Minimum 3 minutes w1

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

LOW or HIGH LOW or HIGH

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.

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

2-1 COOL operation

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

3 Press the SET TEMP. button to set the desired temperature.

NOTE: Set temperature changes 2°F when the

SET TEMP. 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 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 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.

OC277-28

5 Coil frost protection

5 minutes

SET

LOW

5 minutes

SET

LOW

OFF

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 LOW/HIGH 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 LOW/HIGH 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)

When the abnormality detection is released, the fan speed returns to the set speed.

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.

OC277-29

(3) Auto vane control

holizontal

AUTO RETURN AUTO RETURN

Auto vane position is set to horizontal 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

Horizontal

2 Fan speed : HIGH

Horizontal

1 Fan speed : LOW

2 Fan speed : HIGH

20°

40°

60°

SWING

When 40° degrees or 60° degrees airflow is selected with the LOW fan speed in COOL operation, “AUTO RETURN” will appear below the temperature display. One hour later, the airflow direction returns to horizontal automatically and “AUTO RETURN” will disappear. If the airflow direction is set to horizontal during “AUTO RETURN” indication, the time counting for AUTO RETURN is cancelled.

OC277-30

(4) Detecting abnormalities in the outdoor unit

After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperature and room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the difference is still out of RANGE C,the outdoor unit is functioning abnormally. Thus, the compressor stops and check code “P8” appears on remote controller. RANGE A: 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

RANGE A

RANGE B

RANGE C

OC277-31

Minimum 3 minutes w1

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

DRY MODE

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

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

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

NOTE: The set temperature changes 2°F when the SET TEMP.

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

w1 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 room temperature is higher than set temperature.

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

OC277-32

4The 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 85°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 indoor fan does not run during compressor OFF.

(3) Auto vane control

Same as in COOL operation

(4) Detecting abnormalities in the outdoor unit

An abnormality in the outdoor unit can not be detected in DRY operation.

OC277-33

2-3 HEAT operation

Minimum 3 minutes w2

Thermostat

Indoor fan

Auto vane

Booster heater

Compressor

Power ON lamp

STAND BY lamp

LOW or HIGHLOW or HIGH

OFF

Horizontal Horizontal

OFF

ON OFF

OFF

Extra LOW

1Extra LOW 1

Hot adjustment

From POWER ON until

warm air begins to blow

Hot adjustment

Depends on remote controller setting

1 Changeable Extra LOW or LOW by indoor dipswitch SW1-5 and SW1-6 .

OFF during thermostat OFF hot adjustment defrosting

LOW

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.

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

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

NOTE: The set temperature changes 2°F when the SET TEMP.

button is pressed one time. 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 period has ended.

OC277-34

(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 EXTRA-LOW speed during the thermostat OFF.

EXTRA-LOW speed can be changed to LOW or HIGH speed by setting the dip switch SW1-5 and 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 EXTRA-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 EXTRA-LOW speed. When 5 minutes have passed or the indoor coil temperature exceeds 95°F, the fan speed changes to LOW. 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.

horizontal

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

1 During the hot adjustment with fan speed at EXTRA-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.

20° 40°

60° SWING

OC277-35

(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

RANGE A

RANGE B

RANGE C

OC277-36

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)

In case of the wind baffle installed.

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

1 Press POWER ON/OFF button.

Press the MODE button to display “AUTO”

3 Press the SET TEMP. button to set the desired temperature.

NOTE: The set temperature changes 2°F when the SET TEMP.

button is pressed one time. 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.

OC277-37

Horizontal

20° downward

40° downward

60° downward

swing

2-5 Auto vane control

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

To change the air flow direction, press AIR DISCHARGE button.

Horizontal220°

40°

60° SWING

Available in COOL operation with fan speed on HIGH or in HEAT operation. Unavailable in DRY operation. If fan speed changes from HIGH to LOW during 20° downward airflow in COOL mode, the direction automatically changes to horizontal.

Changes by pressing

the AIR DISCHARGE button.

(1) COOL/DRY operation

At the start-up of COOL or DRY operation, the airflow direction in automatically set to horizontal. After, it can be changed to another direction with AIR DISCHARGE button on the remote controller.

When 40° or 60° airflow is set with fan speed in LOW, “AUTO RETURN” appears right side of the air direction. One hour later the direction changes to horizontal degrees, automatically and “AUTO RETURN” disappears.

(2) HEAT operation

At the start-up of HEAT operation, airflow direction depends on the setting of the last operation. After, it can be changed to another direction with AIR DISCHARGE button. The airflow direction shifts to horizontal regardless of the remote controller settings under any of the following conditions.

● Thermostat OFF

● Defrosting

● Indoor fan speed EXTRA-LOW in hot adjustment

OC277-38

2-6 TIMER operation

FILTER

CHECK MODE TEST RUN

TIMER OFF TIMER CHECK SET TEMP.

CLOCK AUTO AUTO START STOP

FAN SPEED

SWING

AUTO

RETURN

COOL

MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE FILTER

CHECK

TEST RUN

AIR SWEEP

SET TEMP. TIMER SET

FAN SPEED

SWING

AUTO

RETURN

REMOTE CONTROLLER PAR-JH240KUS

WIRED REMOTE CONTROLLER

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. Press POWER ON/OFF button.

2. Press “TIMER ON/OFF” button to select AUTO STOP or AUTO START.

3. Press “CLOCK/TIMER” button to set desired time. Time setting is in 1 hour units for up to 24 hours. Each time TIMER SET button is pressed, set time increases by 1 hour. When TIMER SET button is pressed and held, the set time increases by 1 hour every 0.5 seconds.

4. To cancel the timer operation, press POWER ON/OFF button.

This setting will stop the operation in 8hours.

AUTO STOP

With the lapse of time, time display changes in 1hour units, showing remaining time.

2-7 Test run <Before test run>

● After installing, wiring, and piping the indoor and outdoor units, check for refrigerant leakage, looseness in power supply or control wiring, and mistaken polarity.

● Use a 500-volt measure to check the resistance between the power supply terminal block and ground to make sure that it is at least 1.0MΩ.

Attention: Do not use the air conditioner if resistance is less than 1.0MΩ.

TEST RUN button

Displayed during test run

1. Turn ON main breaker.

2. Press TEST RUN button twice. “TEST RUN” is displayed on remote controller.

3. Select “COOL” with MODE button to check that cool air is beginning discharged. Select “HEAT” with MODE button to check that warm air is beginning discharged.(after a while)

4. Select LOW/HIGH with FAN SPEED button to check that the fan speed changes properly.

5. Press AIR DISCHARGE button to check auto vane operation.

6. Check outdoor fan operation.

7. Check compressor operation referring to the indoor coil temperature code displayed on the remote controller.

8. After checking, press the ON/OFF button.

·The test run works for 2 hours and stops automatically. To cancel the test run, press ON / OFF button or TIMER ON / OFF button.

OC277-39

(1) Indoor coil temperature code

1 ON

1.2 ON

1.2 OFF

SW3

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

~34(36)°F

~113°F

36(37)°F~50°F

~122°F

~59°F

~131°F

~68°F

~140°F

~77°F

~158°F

~86°F

~191°F

~95°F

Thermistor abnormality

(2) Trouble during test run

● If the unit malfunctions during the test run, refer to section 10 in this manual entitled “TROUBLESHOOTING.”

● When the optional program timer is connected to the conditioner, refer to its operating instructions.

2-8 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

~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.

OC277-40

2-9 Dip switch functions

Each figure shows the initial factory setting.

(1). On remote controller board

1. SW17(Address selector) 1 2 3 4 5 6 7 8

ON OFF

SW17-1~6) For address setting SW17-7) When two remote controllers are used,this switch sets the controller function.

OFF:The remote controller is set as a main controller. ON:The remote controller is set as a sub controller.

SW17-8) Switch for system back-up.

OFF:Without back-up ON:With back-up

2. SW18(Function selector)

1 2 3 4

ON OFF

SW18-1) Switch for timer

OFF:Single day ON:timer every day

SW18-2) Switch for filter sign

OFF:filter sign absent ON:filter sign present

SW18-3) Switch for filter sign time setting.

OFF:100Hr ON:2500Hr

SW18-4~8) Not for use.

(2). On indoor controller board

1. SW1 (Mode selector)

1 2 3 4 5 6 7 8 9

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) Switch for fan speed during thermostat OFF in HEAT operation

OFF:EXTRA LOW ON:LOW

SW1-6) Switch for fan speed during thermostat OFF in HEAT operation

OFF:EXTRA LOW or LOW(set with SW1-5) 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.

5678

OC277-41

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) OFF:For models with heat pump

ON: For models with cooling only SW5-3) Not for use. SW5-4) Not for use.

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.

Used in setting the unit-address for group control. For further information,refer to page OC277-51.

For emergency cooling

1 2

ON OFF

This switch is not available for series PCH.

For emergency heating

ON OFF

1 2

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.

PCH24GK

ON OFF

1 2 3

2-10. INDOOR FAN CONTROL

Fan motor max. rotational frequency

PCH30GK PCH36GK

ON OFF

1 2 3

Service Ref.

PCH30GK 208/230 1190/1260 PCH36, 42GK 208/230 1220/1310

ON OFF

1 2 3

Voltage

[V]

208/230PCH24GK 1180/1290

PCH42GK

ON OFF

1 2 3

100% rotational frequency(rpm)

60Hz

OC277-42

TROUBLE SHOOTING

1. REMOTE CONTROLLER DISPLAY ABNORMALITY

CauseDisplay abnormality Check points

The display “centrally controlled” on remote controller does not disappear.

When remote controller POWER switch is turned to ON, the check code “E0”appears.

1) Wrong address setting of remote controller/indoor controller board.

2) Timer adapter is connected to the remote controller.

3) Signal transmission error between indoor unit and remote controller.

1) Signal transmission error between indoor unit and remote controller

1) Check the address setting of remote controller and indoor controller.

2) Check if the timer adapter is used correctly.

3) 1 Turn another remote controller’s DIP SW17-

7 ON to make it sub controller.

2 Connect the sub controller to the unit, and

turn circuit breaker ON.

● If the display “centrally controlled” disappears, replace the original remote controller.

● If the display remains the same, replace the indoor controller board.

1) 1 Connect a sub remote controller. 2 Turn circuit breaker ON.

If the display “centrally controlled” remains, replace the indoor controller board.

3 If the display disappears, turn the remote

controller POWER switch ON and check as follows.

Remote controller

Operating Display

No Display

Sub remote controller

E0 Display Operating Display

E0 Display

Operating Display

Malfunction of Indoor Unit

Malfunction of Remote controller

Malfunction of Indoor Unit and Remote Controller

Malfunction of Remote controller

Malfunction

When remote controller POWER switch is turned to ON, operating display appears, but disappears soon.

Despite turning POWER switch ON, the remote controller display does not appear.

1) Short circuit of indoor/outdoor connecting wire

2) Short circuit of transmission wire.

3) Short circuit of drain sensor heater circuit.

4) Wrong operation of remote controller due to noise wave emitted by other appliances.

1) Damaged remote controller.

2) Short circuit of transmission wire.

3) Bad contact of indoor CN40.

4) CN40 is attached to a sub unit.

5) Damaged transformer.

6) Bad contact of CN2D.

7) Broken fuse.

8) Circuit breaker OFF.

1), 2) Check the wire

3) Measure the resistance of the drain sensor connector CN50 1 - 3. If normal, the value should be 82Ω.

4) Turn the circuit breaker OFF, and then turn ON.

If the remote controller remains abnormal, despite the above measures, replace the indoor controller board.

1) Measure the voltage between terminals of remote controller. If no voltage, remove the terminals and measure the voltage between wires. If the voltage is between 6VDC and 12V, replace the remote controller.

2) ~ 8) Check each point.

If normal, replace the indoor controller board.

OC277-43

2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER

MODE

TIMER ON/OFF CLOCK/TIMER

FAN SPEED

AIR DISCHARGE

AIR SWEEP

REMOTE CONTROLLER

SET TEMP. TIMER SET

FILTER

CHECK

TEST RUN

(WIRED REMOTE CONTROLLER)

2-1 When malfunction occurs during operation

When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote controller. (1) ON the set temperature display part, “CHECK” appears, and the unit

address and the check code are displayed alternately at one-second intervals.

Example

CHECK mode

Check

code

Unit

address

(2) When one remote controller controls several units in the group con-

trol, the LCD shows the unit address and check code of the first malfunctioning unit.

(3) To cancel the check mode, press the ON/OFF button. In remote

ON/OFF control, press the remote ON/OFF switch. In centralise control, turn OFF the ON/OFF button of centralise controller.

Check button

NOTE: The latest check code is memorise, even if the check mode is cancelled by the way mentioned above. It takes 60

seconds maximum to display the memorise check code.

2-2 How to use the self diagnostic function for service A. For normal control with one unit and one remote controller

(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function. (2) During the self diagnostic function, “CHECK MODE” appears at two positions on the remote controller display. Then, at

least 10 seconds later, the unit address and the check code is alternately displayed at one-second intervals.

(3) Check and repair the unit according to the check code. (Refer to the next page.)

B. For group control using one remote controller

(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function. (2) Press the SET TEMP. button or SETTEMP. button on the remote controller to advance or go back to the

unit address. Each time SET TEMP. button is pressed, the unit address advances by one. Each time SET TEMP. button is pressed, the unit address goes back by one. The check code and the unit address, appear alternately.

(3) The check code “U8” means no malfunction has occurred since installation.

The check code “E0” means the following conditions:

● The unit address displayed on the remote controller does not apply to any unit.

● power is not supplied to the unit.

● Signal transmitting/receiving circuit is abnormal.

(4) Check and repair the unit according to the check code. (Refer to the next page.)

OC277-44

Check

code

E0 Signal transmitting/receiving

Diagnosis of malfunction Cause

error

(Indoor controller does not

respond to remote controller signal.)

During individual unit control

1) Bad contact of transmission wire

2) Signal transmitting/receiving circuit is abnormal.

Check points

1) Check the transmission wire.

2) Check with another remote controller. If “E0” is still indicated, replace the indoor controller board. If other check code appears. replace the original remote controller.

P1P2Abnormality of room temper-

ature thermistor (RT1)

Abnormality of indoor coil

thermistor (RT2)

P3 Signal transmission error

(Remote controller does not

respond to indoor controller signal.)

P4 Abnormality of drain sensor 1) Bad contact of transmission

1) Bad contact of thermistor

2) Damaged thermistor

1) Bad contact of transmission wire

2) Signal transmitting/receiving circuit is abnormal.

3) Wrong operation due to noise wave emitted by other appliances

wire

2) Damaged thermistor

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.

1) Check the transmission wire.

2) Check with another remote controller. If “P3” is still indicated, replace the indoor board. If other check code appears, replace the original remote controller.

3) Short-circuit between 1 and 2 of CN40 and

attach CN40 to the following units.

● Second unit in twin control

● Second and third units in triple control

● Sub units in group control

1) Check the connector.

2) Measure the resistance of the thermistor 1 - 3. 32°F···6kΩ 59°F ···3.2kΩ 86°F ···1.8kΩ 41°F···4.8kΩ 68°F ···2.6kΩ 95°F···1.5kΩ 50°F···3.9kΩ 77°F ···2.2kΩ 104°F 1.3kΩ

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

P5 Malfunction of drain pump 1) Malfunction of drain pump

P6 Freezing protection/

overheating protection is working.

P7 System error 1) Wrong address-setting

P8 Abnormality in outdoor unit 1) Wrong wiring of indoor/outdoor

2) Damaged drain sensor

1) Short cycle of air cycle

2) Dirty air filter

3) Damaged fan

4) Abnormal refrigerant

2) Signal transmitting/receiving circuit of remote controller is abnormal.

3) Wrong SW6-setting

connecting wire

2) Reversed phase

3) Protection device is working

4) Damaged outdoor coil thermistor

OC277-45

1) Check the drain pump.

2) Check the drain sensor. (Check the drop of water is on.)

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

1) Clear obstructions from the air cycle.

2) Clean the air filter

3) Check the fan.

4) Check the refrigerant temperature.

1) Check the address-setting.

2) Check with another remote controller. If check code other than “P7” appears, replace the original remote controller.

3) Check SW6 setting.

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.

3. WRONG WIRING ON SITE

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

COOL

HEAT

Thermostat

Phenomenon

OFF Operation stops.

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

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.

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

OutdoorIndoor

1 2 3

Disconnection between 1 and 1 or 2 and 2.

COOL

HEAT

COOL

HEAT

COOL

HEAT

COOL

HEAT

COOL

HEAT

OFF Outdoor unit stops.

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

remote controller display.

OFF Operation stops.

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

remote controller display.

OFF Outdoor unit stops.

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

remote controller display.

OFF Operation stops.

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

remote controller display.

OFF Outdoor unit stops.

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

remote controller display.

OFF Operation stops.

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

remote controller display.

OFF Outdoor unit stops.

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

remote controller display.

OFF Operation stops.

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

remote controller display.

OFF Operation stops.

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

remote controller display.

OFF Operation stops. 4-way valve turns OFF.

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

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

remote controller display.

OC277-46

4. OTHER TROUBLES AND CAUSES

Vanes do not work.

Unit stops after 5 to 20 seconds operation

Air discharge display is OFF and AIR DISCHARGE button does not operate.

In this case, remote controller is normal.

Power ON/OFF button is not available.

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

Protection function is working.

Indoor controller board deems the auto vanes are not attached to the unit. Horizontal angle can not be detected.

Beep sound is heard, but display is turned OFF.

Beep sound is not heard, and display remains OFF.

“CENTRALLY CONTROLLED” is displayed.

Indoor controller is

damaged.

Dip switch setting is

wrong.

Indoor controller is

damaged.

Vane motor is dam-

aged.

Auto vane is wired after

power is turned to ON.

Indoor/outdoor connecting wire is connected incorrectly. Indoor/outdoor connecting wire shorts. Compressor protector is damaged. Outdoor controller board is defective.

Remote controller is damaged. Transmission wire is poorly connected

Vane motor is damaged. Vane motor relay is damaged.

Refer to check code on remote controller display. See page OC277-45.

Vane motor is damaged.

Transmission wire is damaged. Connector is poorly connected. Indoor terminal block is poorly connected. Remote controller terminal block is poorly connected.

OC277-47

5. How to check the parts

Parts name Check points

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

Measure the resistance between the terminals using a tester. (Ambient temperature 77°F)

Vane motor (MV)

(Refer to the next page for a detail.)

Room temperature thermistor (RT1)

Liquid pipe thermistor (RT2)

Normal

4.3k" to 9.6k"

Abnormal

Open or short

Normal

Connector

Abnormal

24,30,36,42GK

150" Open or short

Orange

Red

Pink

Red — Yellow Red — Blue Red — Orange Red — Pink

Blue

Yellow

Measure the resistance between the terminals using a tester.

Opening and closing temperature of protector. Open: 266i41°F (Fan motor OFF) Close: 176i68°F (Fan motor ON)

Fan motor (MF)

Red

White

Black

Relay connector

Protector

24GK

41.1"

54.3"

Abnormal

Open or short

30,36,42GK

20.4"

20.7"

Red-Black

White-Black

Motor terminal

Relay connector

Normal

PCH

OC277-48

Thermistor for lower temperature

Room temperature thermistor(RT1) Liquid pipe thermistor(RT2)

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

Rt=15exp { 3480( ) }

273+{(t-32)/1.8}

273

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

< Thermistor for lower temperature >

Resistance (K")

-4 14 32 50 68 86 104 122 Temperature (°F)

OC277-49

Unit

Remote control display board

Remote controller

Unit Unit

Unit

Remote controller

Unit Unit

Unit

Remote controller

Unit Unit

Optional adapter

Remote ON/OFF switch

Remote controller

Relay box

Unit

Remote controller

Unit Unit

Circuit breaker

Remote controller

SYSTEM CONTROL

1. VARIETY OF SYSTEM CONTROL FUNCTIONS

1 Group control with

a single remote controller (See page OC277-

51.)

2 Control using two

remote controllers (See page OC277-

52.)

3 Both remote

ON/OFF and individual controls (See page OC277-

52.)

w Timer adapter

(PAC-SA89TA-E) is needed.

4 Individual control

by grouping remote controllers (See page OC277-

53.)

Many units, installed at different locations, can be started and controlled with a single remote controller. The remote controller can be mounted in a different location using a non-polar two-wire cable, which can be extended up to 500m. Amaximum of 50 units can be controlled with a single remote controller. All units operate in the same mode.

Two remote controllers can be used to control either one unit or a group of units. Units can then be controlled from a distance or at close range. Units operate according to the latest command from either remote controller.

All units can be turned on or off simultaneously using a remote ON-OFF switch. Also, each unit can be controlled individually by each remote controller. Dunning remote ON-OFF control, a message of “CENTRALLY CONTROLLED” is displayed on the LCD of the remote controller. This is available for both one unit control and several units control.

By grouping the remote controllers in one place, several units installed at different locations can be controlled individually, and operation conditions of all units are visible without a special control board. The control method is the same as that of the single unit with a single remote controller.

5 Multiple remote

control display (See page OC277-

54.)

w Multiple display

adapter (PAC-SA88HA-E) is needed.

6 Auto restart func-

tion (See page OC277-

54.)

Several units can be controlled with a remote control display board. Operation conditions of all the units are visible with the remote control display board. Individual control by each remote controller is also possible.

A unit can be started or stopped with the circuit breaker on or off. Remote controller is also available. With this function, when the power is restored after power failure, the unit will restart automatically. (However, when the remote controller POWER ON/OFF button is OFF, the unit will not start.)

OC277-50

2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER

To remote controller

To next unit

The last unit dose not have this wire.

Next unit electrical box

Master unit electrical box

123

L1 L2 GR

123

Master unit

No.1 unit No.2 unit Last unit

2-wire cable

SW2

CN40

SW2

Should be removed from all units other than unitNo.0: (Master Unit).

A maximum of 50 units can be started in order according to the dip switch settings

2-1 How to wire

(1) Connect the remote controller to the double terminal block

on the indoor controller board of the master unit (No.0 unit). (See Figure 1.)

(2) Connect the double terminal block of the master unit to the

double terminal block of No.1 unit.

(3) Connect the double terminal block of No.1 unit to the dou-

ble terminal block of No.2 unit.

(4) Continue the process until all the units are connected with

two-wire cables. (See Figure 2.)

(5) Remove the connector CN40 from the indoor controller

board of each unit except the master unit. (See Figure 3.)

(6) Set the unit-address of each unit with SW2 on the indoor

controller board following the instructions below.

2-2 How to set unit-address

The unit-address also serves as a successive-start timer which starts each unit at intervals of 1 second. If two or more units have the same unit-address in a group control, operation stops due to system error. Be sure to set SW2 correctly following the instructions below. (1) Each lever of SW2 shows the number as follows.

SW2-1 : 1 SW2-4 : 8 SW2-2 : 2 SW2-5 : 16 SW2-3 : 4 SW2-6 : 32

(2) Total number of levers turned to ON shows the address of

the unit. For example, to set No.3 unit, turn ON SW2-1 and SW2-2.

(3) In this way, set from the master unit to the last unit.

Do not forget to set the master (No. 0) unit.

Figure 1

Figure 2

Figure 3

Indoor controller board ▼

Setting examples

Master (No. 0) unit

ALL OFF

No. 1 unit

1 ON

No. 2 unit

2 ON

No. 4 unit

3 ON

No. 8 unit

4 ON

No. 16 unit

5 ON

SW2

Unit address & start delay in seconds.

2-3 Unit control

The remote controller can control all units ON/OFF, temperature, air flow, and swing louver. However, the thermostat in each unit turns ON or OFF individually to adjust to the room temperature.

OC277-51

No. 32 unit

6 ON

3. CONTROL USING TWO REMOTE CONTROLLERS

Figure 4

Individual operation

Remote controller

Multiple operation

SW17

Remote controllerFigure 5

Remote controller

power supply of control circuit

Remote ON/OFF

switch

2-wire remote controller cable

Figure 6

Relay box

Timer adapter cables

Timer adapter PAC-SA89TA-E

OFF

Main remote controller Sub remote controller

Turn SW17-7 ON.

OFF

Two remote controllers can be used to control either one unit or a group of units. Units operate according to the latest com-

mand from either of the two remote controllers.

Before operation, be sure to set one remote controller as the “main controller” and the other as the “sub controller”, using dip

switch SW17-7 of the remote controller.

3-1 How to set SW17-7 (See Figure 5.)

(1) For the main remote controller, turn SW17-7 OFF. (2) For the sub remote controller, turn SW17-7 ON.

3-2 Remote controller LCD indication

(1) The same indications always appear on both the

main and sub remote controllers, except during the timer operations.

(2) Timer operations can be set with either of the two

remote controllers. However, LCD indication appears only on the remote controller used for timer-settings.

(3)If both remote controllers are set for timer operation

with different time-settings, the timer operation with the shorter remaining-time is effective.

(4) Self-diagnostic function is available with either of the

two remote controllers. If one of the remote controllers is used for the self-diagnostic function, the other remote controller displays the check mode. If the self-diagnostic function is reset by either of the two remote controllers, both remote controllers are reset.

4. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS

This method is available to control one unit or any number of units. The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switch

to the system. Timer adapter is an optional part. Other parts are available on the market. (A) To start all units in order by remote ON-OFF switch (B) To stop all units simultaneously by remote ON-OFF switch (C) To switch between the remote ON-OFF control and the individual remote control

4-1 System

Figure 6 shows the case of three units. The same is the case with any number of units.

OC277-52

NOTE1 : Install the relay box where you can be serviced it easily.

Power supply

Remote ON/OFF switch

No.1 unit relay box

No.2 unit relay box

Next unit

X2 X2

Glow switch or pilot lamp can be combined to easily identify the on-off mode of SW1 and SW2.

To No.1 unit

To No.2 unit

Timer adapter cables

Remote controller

SW2

Remote controller cable (2-core)

Remote controller

NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control

circuit.

NOTE3 : When the power supply of the control circuit is 208/230V AC,

● Do not connect the control circuit wire to the remote controller cable directly.

● Do not place the control circuit wire and the remote controller cable into the same conduit tube.

4-2 Basic wiring

Caution : Before starting all units simultaneously by the remote ON-OFF switch, be sure to connect a sequence-start timer

into the remote ON-OFF circuit. Otherwise, a rush of starting current may damage the power supply.

4-3 Switch function of remote ON-OFF switch

SW2

(Switches between remote ON-OFF and individual control)

SW1 (Switches between remote ON and OFF.)

(Start)

OFF

(Stop)

(Remote ON-OFF control)

All units start together.

Individual control is not available. All units stop together.

Individual control is not available.

Each unit can be controlled by each remote controller. Remote ON-OFF switch is not available.

(Individual control)

w1After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller. w2After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.

5. INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS

● Grouping the remote controllers allows individual control and cen-

tralise monitoring of units installed in different places without a special control board.

● Remote control cables are extendible up to 550 yards When the

cable length exceeds 33ft, use the double-insulated two-care cable such as Belden 9407. Also, the cable thickness must be No. 22 AWG or above.

● When gathering the power ON/OFF switches of air conditioners

near the remote controllers, you should also install the power ON/OFF switch near each unit to prevent electric trouble during servicing.

OFF

OC277-53

6. MULTIPLE REMOTE CONTROL DISPLAY

CN51

connector(5P)

GREEN

Power supply

Electrical insulation is needed.

Wiring at the actual place

Optional multiple display adapter

The maximum distance between indoor board and relay is 33ft.

YELLOW ORANGE

RED

BROWN

CN51

Indoor controller board

CN51

Power supply

Remote controller cable

Relay box (Field supply)

Remote controller

3wires 3wires 3wires

2wires

No.1 unit No.2 unit No.3 unit

Multiple remote control ON-OFF display (Field supply)

(Operation check)

Power supply

RL-1 GL-1

Multiple Remote Control Display

Multiple remote controller adapter

connect to the connector CN51

Relay box

X1-1

X2-1

RL-2 GL-2

RL-3

No.1 unit

GL-3

X1-1

X2-1

X1-2

X1-3

X2-3

X2-2

No.2 unit

No.3 unit

X1-2

X2-2

X1-3

X2-3

Remote controller

A B

Brown

Red

Orange

Remote controller

A B

Brown

Red

Orange

You can control several units with a multiple remote control display, by wiring an optional multiple display adapter (PAC-SA88HA-E) with relays and lamps on the market.

How to wire

(1) Connect the multiple display adapter to the connector CN51 on the

indoor controller board.

(2) Wire three of the five wires from the multiple display adapter as shown

in the figure below.

[Notes on Signs] X1:Relay (for operation lamp) X2:Relay (for check lamp) RL:Operation Lamp GL:Check Lamp [Field supplied parts] Relays:12V DC with rated coil power

consumption below 0.9W.

Lamps:Matching to power supply voltage.

7. AUTO RESTART FUNCTION

By setting the dip switch SW1-8 to ON, the air conditioner can be started/stopped by power supply ON/OFF. If the air conditioner is OFF before the power failure, it will not start operation by power restore.

•This function is mainly to emergency performance when the power supply stops temporarily. Therefore, since the protection function (for example, clank case heater and prevention from restarting in 3 minutes, etc.) of the device is not operated, this function should not be used mostly.

8. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL

For remote control, connect the optional timer adapter (PAC-SA89TA-E)

OC277-54

A : an optional timer adapter B : a single-throw switch

slide

Intake grille

Intake grille Holding knobs

Hinges

Pull out the intake grille

Electrical cover

Screws (electrical cover)

Screws (electrical box)

Slide to the left

Beam

Clamp

DISASSEMBLY PROCEDURE

PCH24GK

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the air intake grille

(1) Slide the intake grille holding knobs (at two locations)

backward to open the intake grille.

(2) When the intake grille left open, push the stoppers on the

rear hinges (at two locations) to pull out the intake grille.

2. Removing the electrical box

(1) Remove the air intake grille. (2) Remove the screw from the beam and remove the beam. (3) Remove the screws from the electrical cover, and

remove the electrical cover. (4) Disconnectors including CN6V and CN21. (5) Remove the screws from the electrical box and pull out

the electrical box.

Figure 1

Figure 2

<Electrical parts in the electrical box> Terminal block (for power supply) Terminal block (for in/outdoor connecting wire) Terminal block (for remote controller) Fan motor capacitor Indoor control board Relay Power Board

OC277-55

Photo 1

Fan motor capacitor

Power

board

Relay

Indoor control board

Relay

Terminal block (in/out connecting)

Terminal block (remote control)

Terminal block (power supply)

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

Screws

Side panel

Slide the panel to the front

3. Removing the fan motor

(1) Remove the intake grille. (2) Disconnect the fan motor connector. (3) Remove the screw for removing the motor support at both

left and right side.

(4) Loosen the set screws at the fan motor side of the con-

necting joint.

(5) Slide the fan motor to the left side and pull it out.

4. Removing the sirocco fan

(1) Remove the air intake grille. (2) Remove 1 beam. (3) Remove the lower casing while pressing the stoppers at

upper side of the casing. (4) Loosen the set screws at the connecting joint. (5) Remove the sirocco fan and shaft together by sliding the

shaft to the left.

Photo 2

Screws

Photo 3

Motor

Motor support

Set screws

Motor set screw

connecting joint

Catch

Casing

(Note)

Make sure that the upper side casing is snapped to the fan plate securely with catch.

5. Removing the side panel

(1) Remove the air intake grille. (2) Remove the screws from the side panel, and remove the

side panel by sliding the panel to the front.

Connecting joint

Figure 3

Sirocco fan

Shaft

Bearing

Screws

OC277-56

OPERATING PROCEDURE PHOTOS

6. Removing the vane motor

(1) Remove the air intake grille. (2) Remove the left side panel. (3) Remove the relay connector of vane motor. (4) Remove the electrical box. (5) Remove the screws of vane motor, then remove vane

motor.

(Note)

Connect the lead wires and connectors properly and place them in the proper position so that the wires are not pinched by other parts.

7. Removing the Indoor coil thermistor

(1) Remove the air intake grille. (2) Remove the right side panel. (3) Remove the relay connector of the pipe thermistor. (4) Remove the screw, and remove the check panel. (5) Extract the indoor coil thermistor from the holder. <Caution for the installation>

There is a possibility for the short circuit when connector gets wet by water through the thermistor lead wire. Therefore, lead wire of the indoor coil thermistor should be traped as shown in the photo 5.

Photo 4

Screw

Left side panel

Check panel

Photo 5

Hold Indoor coil thermistor Trap

Photo 6

Relay connector of the vane motor

Screws

Relay connector of the pipe thermistor

8. Removing the Under panel

(1) Remove the air intake grille. (2) Remove the beam. (3) Remove the side panel (right and left). (4) Unscrew the screws of the under panel, then remove the

under panel.

w Weight of the under panel : approx. 5 lbs.

OC277-57

Photo 7

Vane motor

Screws

Under panel

OPERATING PROCEDURE PHOTOS

9. Removing the drain pan

(1) Remove the air intake grille. (2) Remove the beam. (3) Remove the side panel (right and left). (4) Remove the under panel. Remove the screws of the right

and left side drain pan. (5) Remove the insulation in center of the drain pan, and

after removing the screw, remove the drain pan.

10. Removing the guide vane

(1) Remove the intake grille. (2) Remove the beam. (3) Remove the side panel (right and left). (4) Remove the under panel. (5) Remove the drain pan. (6) Remove the screw from the guide vane, then remove the

guide vane.

Photo 8

Screw

Photo 9

Drain pan

Screws for

Insulation

Screw

11. Removing the Auto vane

(1) Remove the intake grille. (2) Remove the left side panel. (3) Remove the left side box. (4) Remove the under panel. (5) Remove the screw from the auto vane. (6) Slide the auto vane to the right side and pull the auto vane

out.

Drain pan

Photo 10

OC277-58

Guide vane

Auto vane

Screw

OPERATING PROCEDURE PHOTOS

12. Removing the support heater.

(1) Remove the air intake grille. (2) Remove the beam. (3) Remove the side panel (right and left). (4) Remove the relay connector for the pipe thermistor. (5) Remove the under panel. (6) Remove the drain pan. (7) Remove the screw from the pipe cover, and remove the

pipe cover.

(8) Remove the screw from the pipe support, and remove the

pipe fixed support.

Photo 11

Clamp

Screws

Connector for heater

Service panel

Electrical box

13. Removing the heat exchanger.

(1) Remove the air intake grille. (2) Remove the beam. (3) Remove the side panel (right and left). (4) Disconnect the relay connector. (5) Remove the under panel. (6) Remove the drain pan. (7) Unscrew the screw of the pipe cover, and remove the

pipe cover.

(8) Unscrew the screw of the pipe support, and remove the

pipe support.

(9) Unscrew the screw of the heat exchanger, and remove

the heat exchanger. Remove the heat exchanger with care. Since this is quite heavy, removing work should be done with more than 2 people. wWeight of heat exchanger : approx. 12 lbs.

Photo 12

Pipe support

Screws

Pipe cover

Screw

Heat

exchanger

OC277-59

PARTS LIST

STRUCTURAL PART PCH24GK

1 2

19 18

14 13

876

1110

OC277-60

No.

Parts No. Parts Name

Specifications

PCH

24GK

Wiring

Diagram

Symbol

Recommended

Q'ty

Unit

Amount

Q'ty / set Price

LEFT SIDE PANEL LEFT LEG SIDE PLATE-L. REAR PANEL GRILLE HINGE GRILLE CATCH GRILLE ASSY FILTER UNDER PANEL WIRELESS BOARD CASE SIDE PLATE-R. RIGHT SIDE PANEL RIGHT LEG SERVICE PANEL RIGHT SIDE BOX FRONT PANEL AUTO VANE GUIDE VANE ASSY-6R. GUIDE VANE ASSY-6C. GUIDE VANE ASSY-6L. AIR FLITER VANE MOTOR JOINT SOCKET DRAIN HOSECOVER

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1 1 1 1 4 4 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Remarks

(Drawing No.)

R01 35J 662 R01 17J 809 T7W E00 666 T7W E00 676 R01 17J 061 R01 17J 054 R01 17J 691 R01 A14 500 R01 29J 669 T7W E01 070 T7W E00 665 R01 35J 661 R01 17J 808 T7W E01 668 R01 35J 067 T7W E00 651 R01 35J 002 R01 37J 085 R01 37J 087 R01 37J 086 T7W 051 501 R01 35J 223 R01 17J 523 T7W E00 072

Part numbers that are circled are not shown in the illustration.

OC277-61

STRUCTURAL PART PCH30GK PCH36GK PCH42GK

3 4

23 21 20 19

17 16

15 14 13

OC277-62

Part numbers that are circled are not shown in the illustration.

No.

Parts No. Parts Name

R01 35J 662

T7W E00 666

T7W E01 676

R01 A15 500

R01 17J 061

R01 18J 691

R01 17J 054

R01 17J 691

R01 A14 500

R01 41J 669

T7W E01 070

R01 35J 661

R01 17J 808

T7W E01 668

R01 35J 067

T7W E00 665

T7W E01 651

R01 41J 002

R01 41J 085

R01 43J 087

R01 42J 086

T7W 051 501

R01 35J 223

R01 17J 809

R01 17J 523

T7W E00 072

LEFT SIDE PANEL SIDE PLATE-L. REAR PANEL FILTER GRILLE HINGE GRILLE ASSY GRILLE CATCH GRILLE ASSY FILTER UNDER PANEL WIRELESS BOARD CASE RIGHT SIDE PANEL RIGHT LEG SERVICE PANEL RIGHT SIDE BOX SIDE PLATE-R. FRONT PANEL AUTO VANE GUIDE VANE ASSY-5R. GUIDE VANE ASSY-5C. GUIDE VANE ASSY-5L. AIR FILTER VANE MOTOR LEFT LEG JOINT SOCKET DRAIN HOSE COVER

Specifications

Q'ty / set Price

PCH

Remarks

(Drawing No.)

30, 36, 42GK

Wiring

Diagram

Symbol

Recommended

Q'ty

Unit

1 1 1 1 6 1 6 2 2 1 1 1 1 1 1 1 1 1 1 2 1 1 1

MV 1 1 1

Amount

OC277-63

No. Parts No. Parts Name Specifications

PCH

24GK

Wiring

Diagram

Symbol

Recommended

Q'ty

Unit

Amount

Q'ty / set Price

1 2 3 4 5 6 7 8

9 10 11 12 13

15 16 17 18 19 20

PIECE (MOTOR) MOTOR LEG FAN MOTOR SHAFT JOINT DRAIN PLUG SIROCCO FAN SHAFT DRAIN PAN ROOM TEMPERATURE THERMISTOR SLEEVE BEARING BEARING SUPPORT CASING SIROCCO FAN INSULATOR INSULATOR HEATER ELEMENT PIPE TEMPERATURE THERMISTOR HEAT EXCHANGER THERMAL FUSE THERMAL SWITCH RESTRICTOR VALVE

1 1 1 1 1 2 1 1 1 1 1 3 1 1 3 3 1 1 1 1 1

RT1

RT2

FS1,2

26H

Remarks

(Drawing No.)

R01 43E 126 R01 35J 130 T7W E14 762 R01 700 116 R01 17J 524 R01 35J 114 R01 29J 100

T7W E15 529 R01 E26 202 R01 705 103 R01 35J 145 R01 35J 110 R01 39J 114 R01 20J 303 R01 36J 303 T7W 39J 300 R01 17J 202 T7W E85 480 T7W 589 706 T7W E00 700 R01 E00 418

PN4N90-C

80V 900W

117°C

FAN AND HEATER PARTS PCH24GK

10·11

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

OC277-64

FAN AND HEATER PARTS PCH30GK PCH36GK PCH42GK

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

No.

Parts No. Parts Name Specifications

R01 43E 126

R01 41J 114

R01 E26 202

R01 17J 524

R01 35J 114

T7W E16 529

R01 39J 114

R01 35J 110

R01 705 103

R01 35J 145

R01 29J 100

R01 700 116

T7W E15 762

R01 41J 130

R01 20J 303

T7W 43J 300

R01 17J 202 T7W E86 480

T7W E87 480 T7W E88 480

T7W 23J 706

T7W E00 700

R01 36J 303

R01 E00 418

PIECE (MOTOR) SIROCCO FAN ROOM TEMPERATURE THERMISTOR DRAIN PLUG SIROCCO FAN DRAIN PAN SIROCCO FAN CASING SLEEVE BEARING BEARING SUPPORT SHAFT SHAFT JOINT FAN MOTOR MOTOR LEG INSULATOR HEATER ELEMENT PIPE TEMPERATURE THERMISTOR HEAT EXCHANGER HEAT EXCHANGER HEAT EXCHANGER THERMAL FUSE THERMAL SWITCH INSULATOR RESTRICTOR VALVE

PN4N150-C

80V 1000W

Q'ty / set Price

PCH

30GK 36GK

1 1 1 1 2 1 1 4 1 1 1 1 1 1 1 3 1 1

1 1 6 1

1 1 1 1 2 1 1 4 1 1 1 1 1 1 1 3 1

1 1 6 1

42GK

1 1 1 1 2 1 1 4 1 1 1 1 1 1 1 3 1

1 1 1 6 1

Remarks

(Drawing No.)

9·10

Diagram

Symbol

FS1,2

Wiring

RT1

RT2

26H

Recom-

mended

Q'ty

Unit

Amount

OC277-65

ELECTRICAL PARTS

PCH24GK

PCH30GK

PCH36GK

PCH42GK

No.

Parts No. Parts Name

T7W E07 255

T7W E02 255 R01 E02 313

T7W 520 239

T7W E24 310

R01 KV6 246

T7W E11 716

R01 556 246

T7W A00 305

T7W E05 713

R01 479 215

CAPACITOR CAPACITOR POWER BOARD FUSE CONTROLLER BOARD TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK COARD (REMOCON) REMOTE CONTROLLER RELAY

Specifications

5µF. 440V 7µF. 440V

250V 6.3A

3P (1,2,3) 3P (L1,L2,GR) 2P (1,2) 33ft

LY-1F DC12V

Q'ty / set Price

PCH

24GK

30GK

36GK

42GK

Remarks

(Drawing No.)

Wiring

Recom-

Diagram

mended

Symbol

C C

P.B

F1,2

I.B TB4 TB2 TB5

R.B

88H1,88H2

Q'ty

Unit

Amount

OC277-66

83˚F

˚F

8:00

Normal

operation

23:00

Setback

operation

8:00

Normal

operation

OPTIONAL PARTS

1. TIMER

When using a program timer, a program timer adapter (PAC-825AD) is also needed. (PAC-825AD is included with PAC-SC32PTA.)

Part No. PAC-SC32PTA(with set back function)

Model Name Program timer

1-1 Program timer specifications

Parts name Program timer Parts No. PAC-SC32PTA Exterior dimensions (inch) 5-4/32x4-23/32x23/32 (130x120x18mm) Installation Wall mount Type of clock Quartz Clock accuracy ±50 second / month at 77°F

Display-Time

-Week

-Timer setting unit

Program cycle 24 hours Timer setting unit 30 minutes No. of set points 48 / day Power rating 5V DC ±5% (Supplied by Remote Controller)

Liquid crystal display Liquid crystal display Liquid crystal display

1-2 Feature of program timer

(1) Daily timer function

Daily timer can be set in 30 minutes units for up to 24 hours. Each unit can be set for unit ON, unit OFF, or setback operation.

(2) Setback operation (PAC-SC32PTA)

Set back operation is useful for reducing running costs e.g. At a hotel with a 24-hour system

8:00~23:00 Cooling operation with set temperature at 79°F

23:00~8:00 Setback operation with 4 degrees of setback As shown in the chart on the right, the set temperature rises 4 degrees automatically during the setback operation. When the setback operation ends, normal operation will begin.

(3) Weekly timer function

Daily timer function can apply to each day of the week.

1-3 How to connect program timer

(1) Install the program timer next to the remote controller the same way as the remote controller is installed. (2) Connect the program timer and the remote controller with a 5-wire cable as shown in the figure below

Connect to indoor unit 2-wire cable

SET BACK

SMTWTF S

SET

FILTER

MONITOR

CHECK MODE TEST RUN

SET/MONITOR

PROGRAM TIMER

PAC-SC32PTA

WEEKLY

TODAY

SETTING

CLOCK DAILY TIMER

OFF

0361215

12 15 18 21 24

SET BACK

OFF

NOTE:While the program timer is connected to the remote controller, the

24hour ON/OFF timer on the remote controller will not operate.

DAILY

SETTING

Connect to CN1 Connect to CN1

Use 5-wire cable

OC277-67

1-4 Names and functions

SET/MONITOR

SET

SMTWT FS

MONITOR

PROGRAM TIMER

PAC-SC32PTA

TODAY

WEEKLY

SETTING

OFF

SET BACK

OFF

CLOCK DAILY TIMER

SET BACK

DAILY

SETTING

12 15 18 21 24

0361215

<PAC-SC32PTA>

WEEKLY TIMER SETTING DISPLAY

CURRENT TIME DISPLAY

SET BACK DISPLAY

DAILY TIMER SETTING DISPLAY

Sets timer for a week.

SET/MONITOR DISPLAY

When SET is displayed, clock adjustment, change of weekly day, daily and weekly timer setting can be performed. During MONITOR is display, all switches except SET/MONITOR SW are invalidated. This is normal status.

WEEK DAY SETTING SW

Used for week day setting.

MODE SELECTOR SW

Using this switch select “MONITOR” or “SET” Mode.

“MONITOR” :Indicates the current timer set-

ting. All switch expect MODE SELECTOR SW are invalidated then.This is the normal status.

“SET”: Set to “SET” mode for clock adjust-

ment, charge of week day, daily and weekly timer setting.

During MONITOR status,current time is display.

Indicates the set back range.

During Daily timer setting, a time desire for timer setting is displayed.

CLOCK ADJUSTMENT SW

Used for adjustment of the current time.

Push SW to advance the time. Each time the button is pushed the time advance by 1 minute, pushing continuously advances by 1 minute at 0.5 second interval, and when the lower digit of minute becomes 0 indication advances in 10 minutes unit.

SW is used for reversing the time. Each time the button is pushed the time reverses by 1 minute, pushing continuously reverses the time by 1 minute at 0.5 second interval, and when the lower digit of minute becomes 0 indication reverses in 10 minutes unit.

24 hours is divided into 48 blocks and each

block express 30 minutes.

The block display consists of 3 pattern.

Set back

1=2°F 2=4°F 4=8°F 6=12°F 8=16°F

SET BACK SETTING SW

Used for set back setting.

ON/SET BACK/OFF SW

Used to specify the time setting pattern.

DAILY TIMER SW

Used for timer setting in 30 minutes unit.

WEEKLY TIMER SW

Used for setting timer in day of week unit.

Pushing SW moves the week day light

display in order of S → M → T → W

enabling to set the week day.

…

OC277-68

2. REFRIGERANT PIPES

Service Ref. : PCH24GK

Part No. PACSK03FS PACSK05FS PACSK07FS PACSK10FS PACSK15FS Pipe length (ft.) 10 16 23 33 49 Pipe size O.D.(in.) (in.)

Connection method Indoor unit: Flared Outdoor unit: Flared

Service Ref. : PCH30/36GK

Part No. PACSK03FF PACSK05FF PACSK07FF PACSK10FF PACSK15FF Pipe length (ft.) 10 16 23 33 49 Pipe size O.D.(in.) (in.) Connection method Indoor unit: Flared Outdoor unit: Flared

Service Ref. : PCH42GK

Part No. PACSK07FK PACSK15FK Pipe length (ft.) 23 Pipe size O.D.(in.) (in.) Connection method

Note 1. The refrigerant pipes and the indoor unit contain a nitrogen holding charge which must be removed by evacuation.

<Piping connection procedures> See that ball valve on outdoor unit is fully shut (unit is shipped with valve shut). Remove caps from piping and unit and make flare connection promptly. Repeat for each connection, one at a time. After all piping connections between indoor and outdoor unit have been completed, vacuum-purge air from system through the service port for the ball valve on the outdoor unit.

Note 2. The following parts are contained in optional refrigerant piping kit.

Heat insulating cover, vinyl tapes, nipples, sleeve and flange (for wall hole), connecting cables etc.

Indoor unit: Flared Outdoor unit: Flared

Liquid:[3/8 Gas:[5/8

Liquid:[1/2 Gas:[3/4

Liquid:[1/2 Gas:[7/8

3. TIMER ADAPTER

This adapter is needed for system control and for operation via external contacts.

Part No. PAC-SA89TA-E

4. MULTIPLE REMOTE CONTROLLER ADAPTER

This adapter is needed for remote indication (operation/check).

Part No. PAC-SA88HA-E

OC277-69

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 PCH24GK, PCH36GK, PCH30GK, PCH42GK User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual