Mitsubishi PL-1.6KJC, PL-2KJC, PL-2.5KJC Service Manual

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE, AIR CONDITIONERS

CONTENTS

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

2. PART NAMES AND FUNCTIONS········3

3. SPECIFICATIONS·································5

4. DATA·····················································7

5. OUTLINES AND DIMENSIONS··········10

6. WIRING DIAGRAM·····························12

7.

REFRIGERANT SYSTEM DIAGRAM

······13

8. OPERATION FLOW-CHART··············14

9. MICROPROCESSOR CONTROL·······17

10. TROUBLESHOOTING ························25

11. 4-WAY AIR FLOW SYSTEM ···············27

12. DISASSEMBLY PROCEDURE···········28

13. PARTS LIST········································31

14. OPTIONAL PARTS·····························35

Indoor unit [Model names] [Service Ref.]

PL-1.6KJC PL-1.6KJC PL-2KJC PL-2KJC PL-2.5KJC PL-2.5KJC

No. OC125

1997

This manual does not cover the following outdoor units. When serving them, please refer to the service manual No.OC127 and this manual in a set. <Service Ref.> PU-1.6VLJA

2

PU-2VJA2 PU-2NJA1 PU-2.5VJA2 PU-2.5NJA1

INDOOR UNIT

Ceiling Cassettes

Series PL

MITSUBISHI ELECTRIC

12 11 10

9 8 7 6 5 4 3 2 1

29 28 27 26 25 24 23 22 21 20 19 18

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL

ON/OFF

LOUVER

MODE

SELECT

FAN

SPEED

TIMER

MODE

DRY FAN

HIGH

LOW

ON

AUTO STOP

START

REMOTE CONTROLLER

The Slim Line. From Mitsubishi Electric.

2

FEATURES

1

1.PURSUING COMPACTNESS

(1)Panel size and body volume reduced to 64% of previous models

The width and depth of the panel have been reduced by 19cm respectively,resulting in a compact model which fits smaller environments (like shops) perfectly.

(2)Multi-application panels flexibly adapt to installation conditions.

Space panel and Wide panel may be installed on ceilings with shallow depth using the exiting opening .

2."SMUDGE-FREE", PRECISELY TARGETED AIRFLOW SYSTEM

The new control system regulates airflow to prevent smudging. A projection inside the air passage distributes air evenly over the top and bottom of the vane. Two projections on the air outlet work to prevent cooled air from rising to the celling, and also to stop outside air being dragged into the cooled air stream.

3.AIRFLOW ADJUSTABLE TO ANY INDOOR ENVIRONMENT

Airflow can be adjusted according to celling height and the number of air outlets. "Wide Zoming Flow" creates an optimum airflow for any indoor environment.

4.A FURTHER REFINEMENT OF COMFORT WITH NOISE SUPPRESION

The celling 4-way airflow cassette has a special "silent-design". The "2-Tap"system allows a choice between silent and standard modes according to the height of the cellig. For ordinary residenced which have a low celling, selection of the silent mode will result in remarkable noise reductions.

5.ECONOMICAL AND EASY MAINTENANCE

(1)Push-open grill

Filter clogging is widely recognized as a cause of reduced perfomance, but up until now it has been troublesome to clean filters. With the "push-open grill" the fillter can be smoothly opened out at the push of a button, enabling speedy cleaning.

(2)An unprecedented level of vane-cleaning

The unique airflow system prevents the intake of indoor air. Dewing therefore does not occur, and the vane is flockless. The resulting level of dirt on the vane due to tobacco smoke, dust, etc. is very light,and can be wiped off easily with a neutral detergent.

(3)Long-life fillter

This new celling 4-way airflow cassette employs a long life fillter which requires no maintenance for up to 2,500 hours of operation in general office environments. It adds uo to an ideal blend of comfort and low maintenance.

Service Ref.

PL-1.6KJC PL-2KJC PL-2.5KJC

Cooling capacity (50/60Hz)

W Btu/h

3,800/ – 5,600/5,400 6,500/7,000

13,000/ – 19,100/18,400 22,200/23,900

Ceiling Cassettes

Series PL

INDOOR UNIT REMOTE CONTROLLER

MITSUBISHI ELECTRIC

12 11 10

9 8 7 6 5 4 3 2 1

29 28 27 26 25 24 23 22 21 20 19 18

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL

ON/OFF

LOUVER

MODE

SELECT

FAN

SPEED

TIMER MODE

DRY FAN

HIGH

LOW

ON

AUTO STOP

START

Rating conditions (JIS B8616) Indoor : 27°C (80°F) DB, 19°C (66°F)WB Outdoor : 35°C (95°F) DB, 24°C (75°F)WB

3

6.COMPACT DIMENSIONS MEAN EASY INSTALLATION

(1)Carefree suspension work with lightweight unit

The new unit weighs in at 20kg (9kg lighter than the previous model) and is easy to handle and install. What's more, suspension work is facillitated by compact dimensions ensuring a snug fit.

(2)Smooth installation with "one-direction"bolts

Suspension bolts can be fixes consistently from one direction easing suspension work.

(3)Trouble-free fitting work with slender refrigerant piping

Refrigerant piping has been reduced in size, and pipe-curving work at the installation site can now be completed quickly and economically. In addition, refrigerant and drain piping are set at different corners, which means that flare connections and drain piping heat insulation work can be smoothly and reliably implemented.

(4)Easy-access terminal and control panels for efficient wiring

When performing wiring work, progress can be checked on the power source terminal and control panels simply by removing the electrical parts cover. Address setting can also be done easily from beneath at a convenient angle.

(5)"One-push"to provisionally position front panel

Panel weight has been redused from 7kg to 3.7kg. The previous 3-step process for provisionally positioning the panel has been streamlined, and now a simple "one-push" action at the diagonal corners fixed it into place, resulting in major time-saving.

2

PART NAMES AND FUNCTIONS

● Indoor Unit

PL-1.6KJC PL-2KJC PL-2.5KJC

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

Grill

Filters Remove dust and pollutants from inhaled air

Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying.

Air Intake Inhales air from room.

4

Attention

● Pressing the UP and DOWN buttons together for more than two seconds will initiate the “test run” or “self-diagnostic” mode. Avoid pressing these buttons simultaneously during normal operation. Press the ON/OFF button to cancel test run or selfdiagnostic mode.

●All green lamps turn off when air conditioner is OFF.

●Avoid operation of buttons with fingernails or other sharp objects. Sharp objects may scratch operating panel.

● Controller

Settings remain in effect' until changed. The air conditioner can be operated by simply pressing ON/OFF button once settings have been made.

MITSUBISHI ELECTRIC

12 11 10

9 8 7 6 5 4 3 2 1

29 28 27 26 25 24 23 22 21 20 19 18

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL

ON/OFF

LOUVER

MODE

SELECT

FAN

SPEED

TIMER MODE

DRY FAN

HIGH

LOW

ON

AUTO STOP

START

This button is used to

change between display of room temperature and

display of remaining time

on the timer during “AUTO

STOP” operation. Green lamps light in selected display mode.

TIMER/TEMP. button

Pressing button starts operation. Pressing again stops operation. Green lamp remains lit during operation.

ON/OFF button

This button is used to change between cooling, DRYING and ventilation operation modes. One of three green lamps lights to indicate mode in effect.

MODE SELECT button

This button is used to change between low and high fan speeds. One of two green lamps lights to indicate which fan speed is in effect.

FAN SPEED button

Used to select timed starting or stopping. Green lamp lights to indicate timer mode selected.

TIMER MODE button

This button is used to switch swing louver ON/OFF.

LOUVER button

●Temperature control (While green “TEMP” lamp

is lighting.) Use UP and DOWN buttons to set desired temperature between 18 and 29 °C.

●Timed operation (While green “TIMER“ lamp is

lighting.) Use UP and DOWN buttons to set timed operation between one and twelve hours.

UP and DOWN buttons

Lamps indicate time remaining

until timer stops operation.

Green lamps display the

remaining number of hours.

Lamps display temperature

settings actual room temperatures.

●Temperature settings : Green lamps light.

●Temperature in room : Green lamps flash.

(Example display readings are

for explanations only, so actual display readings will differ.)

Lamps display remaining time on the timer or room temperature. Remaining timer time display

Room temperature display

Display panel

Operating panel

5

3

Service Ref.

External finish Fan motor output

Airflow Lo-Hi

External static pressure Operation control & Thermostat

Noise level Low-High

Cond. drain connection OD

Dimensions

Weight External finish

Dimensions

Weight

Service Ref.

External finish Refrigerant (R-22) control Crankcase Heater w4 Compressor output Protection devices Fan motor output

Airflow

Noise level

Dimensions

Weight

W

Btu/h

W

Btu/h

W

Btu/h

kW

CMM

CFM

CMM

CFM

mmAq,Pa

dB(A)

dB(A) mm(in.) mm(in.) mm(in.) mm(in.) kg(lbs.)

mm(in.) mm(in.) mm(in.) kg(lbs.)

W

kW

kW CMM(CFM) CMM(CFM)

dB(A) mm(in.) mm(in.) mm(in.) kg(lbs.)

50Hz

60Hz

50Hz

60Hz

50Hz 60Hz

W

D H

W

D H

50/60Hz

50Hz 60Hz

50/60Hz

W

D H

3,800

13,000

– – – –

1.54/–

PL-1.6KJC

0.03

13-15

460-530

13-15

460-530

31-35 31-35

32 (1-1/4)

660 (26) 660 (26) 253 (10)

19 (42)

760 (30) 760 (30)

30 (1-1/8)

3.7 (8)

PU-1.6VLJA

2

–

1.2/w5

0.065 45(1588) 45(1588)

49/–

870(34-1/4)

650(25-5/8)

45(99)

5,600

19,100

5,400

18,400

4,500

15,400

2.57/2.59

PL-2KJC

Galvanized sheets with gray heat insulation

0.03

13-16

460-565

13-16

460-565

0 (Direct blow)

Remote control & Built-in

32-37 32-37

32 (1-1/4)

660 (26) 660 (26) 253 (10)

19 (42)

Munsell 0.70Y 8.59/0.97

760 (30) 760 (30)

30 (1-1/8)

3.7 (8)

PU-2VJA

2, PU-2NJA1

Munsell 5Y7/1

Capillary tube

32/–

2.0/1.5

0.065 45(1588) 45(1588)

49/50

870(34-1/4)

295+24(11-5/8+1)

650(25-5/8)

60(132)

6,500

22,200

7,000

23,900

5,950

20,300

2.59/3.05

PL-2.5KJC

0.03

14-17

495-600

14-17

495-600

35-39.5 35-39.5

32 (1-1/4)

660 (26) 660 (26) 253 (10)

20 (44)

760 (30) 760 (30)

30 (1-1/8)

3.7 (8)

PU-2.5VJA2, PU-2.5NJA

1

32/–

2.0/1.7

0.085 50(1765) 50(1765)

52/53

870(34-1/4)

850(33-7/16)

71(157)

Inner thermostat, HP switch, LP switch

Cooling capacity w1

Cooling capacity w2

Total input (50/60Hz) w3

Item

Service Ref.

PL-1.6KJC PL-2KJC PL-2.5KJC

Indoor unitIndoor grillOutdoor unit

Notes : w1 Rating conditions (JIS B8616) w2 Rating conditions (SSA 385, 386)

Indoor : 27°C (80°F) DB, 19°C (66°F)WB Indoor : 29°C (84°F) DB, 19°C (66°F)WB Outdoor : 35°C (95°F) DB, 24°C (75°F)WB Outdoor : 46°C (115°F) DB, 24°C (75°F)WB Refrigerant piping length (one way) : 5m (16ft) Refrigerant piping length (one way) : 5m (16ft)

w3 Total input based on indicated voltage w4 Capacity of crankcase heater (W) based on 220 volts.

w5 Motor protector, Thermal switch, HP/LP switch.

Service Ref. PL-1.6KJC / PL-2KJC / PL-2.5KJC

50Hz 1ph 220V/1ph 220V 60Hz 1ph 220V/1ph 220V

1. STANDARD SPECIFICATIONS

(Indoor / Outdoor)

Rating conditions (JIS B 8616)

SPECIFICATIONS

2. POWER SUPPLY & MODEL NAMES

Notes : 1. Power supply key N

......

1ph, 220V, 60Hz

V(L)

...

1ph, 220, 230, 240V, 50Hz

2. Primary power supplies for all indoor units are single-phase.

3. ELECTRICAL SPECIFICATIONS

(1). Rating conditions -JIS B 8616

Indoor : 27°C (80°F) DB, 19°C (66°F) WB Outdoor : 35°C (95°F) DB, 24°C (75°F) WB

Series PL Indoor Unit (Single Phase)

6

(2). Rating conditions -SSA 385,386

Indoor : 27°C (80°F) DB, 19°C (66°F) WB

Outdoor : 35°C (95°F) DB, 24°C (75°F) WB

Series PL Indoor Unit (Single Phase)

A

kW

A

N : 220V 60Hz

PL-2KJC

0.65

0.14

0.72

PU-2NJA

1

PL-2.5KJC

0.66

0.14

0.73

PU-2.5NJA

1

Power supply (1 Phase)

Indoor unit Service Ref.

Current Input Starting current

Outdoor unit Service Ref.

Power supply

1ph.

50Hz

3ph.

60Hz

1ph. 3ph.

Service Ref. (Indoor unit) PL-1.6KJC

220V 220, 230, 240V 380/220V 380/220, 400/230, 415/240V 220V 220V

–

PU-1.6VLJA

– – – –

Model name (Outdoor unit)

PL-2KJC

–

2

PU-2VJA

2

– –

PU-2NJA

1

–

PL-2.5KJC

–

PU-2.5VJA

– –

PU-2.5NJA

–

2

1

Power supply (1 Phase)

Indoor unit Service Ref.

Current Input Starting current

Outdoor unit Service Ref.

A

kW

A

PL-1.6KJC

0.59

0.12

0.65

PU-1.6VLJA

Power supply (1 Phase)

Indoor unit Service Ref.

Current Input Starting current

Outdoor unit Service Ref.

A

kW

A

PL-1.6KJC

0.64

0.14

0.70

PU-1.6VLJA

V : 220V 50Hz V : 230V 50Hz

PL-1.6KJC

2

PU-1.6VLJA

2

PL-2KJC

0.60

0.13

0.66

PU-2VJA

2

PL-2.5KJC

0.60

0.13

0.66

PU-2.5VJA

V : 240V 50Hz N : 220V 60Hz

2

PL-2KJC

0.65

0.15

0.72

PU-2VJA

2

PL-2.5KJC

0.65

0.15

0.72

PU-2.5VJA

2

0.62

0.13

0.68

PL-2KJC

0.65

0.14

0.72

PU-2NJA

2

1

PL-2KJC

0.63

0.14

0.69

PU-2VJA

PL-2.5KJC

0.66

0.14

0.73

PU-2.5NJA

2

1

PL-2.5KJC

0.63

0.14

0.69

PU-2.5VJA

2

7

4

DATA

1. PERFORMANCE DATA

Cooling capacity 50Hz

PL-2.5KJCPL-2KJC

17

0.10

0.75

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

16

0.19

0.81

15

0.31

0.80

Service Ref.

Temperature

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

PL-1.6KJC

0.81

0.82

0.83

0.84

0.85

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

3.8

4.0

4.1

4.2

4.3

4.5

0.83

0.85

0.86

0.87

0.88

5.3

5.7

5.8

5.9

6.0

6.4

0.83

0.85

0.86

0.87

0.88

6.4

6.8

7.0

7.2

7.3

7.8

0.83

0.85

0.86

0.87

0.88

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

3.5

3.7

3.8

3.9

4.2

0.97

0.99

1.00

1.01

1.02

1.04

4.9

5.2

5.4

5.5

5.6

5.9

0.97

0.99

1.00

1.01

1.02

1.04

5.9

6.3

6.5

6.6

6.7

7.2

0.97

0.99

1.00

1.01

1.02

1.04

1.03

1.05

1.06

1.07

1.08

1.12

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

3.3

3.6

3.7

3.8

4.1

1.03

1.05

1.06

1.07

1.08

1.12

4.7

5.1

5.2

5.3

5.8

1.03

1.05

1.06

1.07

1.08

1.12

5.7

6.1

6.2

6.3

6.4

7.0

1.03

1.05

1.06

1.07

1.08

1.12

1.09

1.12

1.14

1.15

1.16

1.20

3.2

3.3

3.5

3.6

3.8

1.10

1.13

1.15

1.16

1.17

1.21

4.5

4.8

5.0

5.1

5.2

5.5

1.10

1.13

1.15

1.16

1.17

1.21

5.4

5.7

6.0

6.1

6.2

6.6

1.10

1.13

1.15

1.16

1.17

1.21

1.16

1.19

1.21

1.22

1.23

1.28

2.9

3.1

3.2

3.3

3.6

1.18

1.22

1.24

1.25

1.26

1.32

4.2

4.4

4.6

4.8

5.1

1.18

1.22

1.24

1.25

1.26

1.32

5.0

5.3

5.5

5.6

5.7

6.2

1.18

1.22

1.24

1.25

1.26

1.32

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

3.6

3.8

4.0

4.1

4.3

0.90

0.92

0.93

0.94

0.96

5.1

5.5

5.6

5.8

6.2

0.90

0.92

0.93

0.94

0.96

6.2

6.6

6.8

7.0

7.4

0.90

0.92

0.93

0.94

0.96

21$C

(69.8$F)

25$C

(77$F)

30$C

(86$F)

32.2$C (90$F)

35$C

(95$F)

40$C

(104$F)

40.6$C

(105$F)

45$C

(113$F)

46$C

(115$F)

50$C

(122$F)

52$C

(125.5$F)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

3.8

4.1

4.2

4.3

4.6

3.6

3.8

3.9

4.0

4.1

4.3

3.3

3.6

3.7

3.8

4.1

3.2

3.4

3.5

3.6

3.7

3.9

3.0

3.2

3.3

3.4

3.6

5.5

5.8

5.9

6.0

6.2

6.5

6.6

7.0

7.2

7.3

7.4

7.8

5.1

5.4

5.6

5.7

5.8

6.2

6.1

6.5

6.7

6.8

7.0

7.4

4.7

5.1

5.2

5.3

5.8

5.7

6.1

6.2

6.3

6.4

7.0

4.5

4.8

5.0

5.1

5.2

5.5

5.8

6.0

6.2

6.3

6.6

4.2

4.5

4.7

4.8

4.9

5.2

5.1

5.5

5.7

5.9

6.2

0.81

0.82

0.83

0.84

0.85

0.81

0.82

0.83

0.84

0.85

0.91

0.93

0.95

0.96

0.98

0.91

0.93

0.95

0.96

0.98

0.91

0.93

0.95

0.96

0.98

1.03

1.05

1.06

1.07

1.08

1.12

1.03

1.05

1.06

1.07

1.08

1.12

1.09

1.12

1.14

1.15

1.16

1.20

1.09

1.12

1.14

1.15

1.16

1.20

1.16

1.19

1.21

1.22

1.23

1.28

1.16

1.19

1.21

1.22

1.23

1.28

Indoor WBOutdoor DB

T.C. C.F.

(T.I.)

C.F.

(T.I.)

T. C.C.F.

(T.I.)

T. C.

Notes : 1. T.C. : Total capacity (kW) ... (kcal/h) = (kW) ✕ 860, (Btu/h) = 4 ✕ (kW) ✕ 860

C.F. (T.I.) : Correction factors of Total input (Indoor unit input + Outdoor unit input)

2. (°F) = 32 + 9 / 5 (°C)

3. Guaranteed operation range (cooling) : Lower limit ... Indoor : 21°C (70°F) DB, 15.5°C (60°F) WB, Outdoor : 21°C (70°F) DB. Upper limit ... Indoor : 35°C (95°F) DB, 22.5°C (72.5°F) WB, Outdoor : 52°C (125.5°F) DB. w

wVL ... Outdoor : 46°C (115°F) DB.

Cooling capacity correction factors 50Hz

PL-1.6KJC PL-2KJC PL-2.5KJC

Service Ref.

Refrigerant piping length (one way)

5m (16ft)

1.0

10m (33ft)

0.992

0.985

0.983

15m (49ft)

0.987

0.975

0.972

20m (66ft)

0.982

0.964

0.961

25m (82ft)

–

0.954

0.951

30m (98ft)

–

0.944

0.940

35m (115ft)

– – –

40m (131ft)

– – –

8

Cooling capacity 60Hz

Notes : 1. T.C. : Total capacity (kW)

...

(kcal/h) = (kW) ✕ 860, (Btu/h) = 4 ✕ (kW) ✕ 860

C.F. (T.I.) : Correction factors of Total input (Indoor unit input + Outdoor unit input)

2. (°F) = 32 + 9 / 5 (°C)

3. Guaranteed operation range (cooling) : Lower limit ... Indoor : 21°C (70°F) DB, 15.5°C (60°F) WB, Outdoor : 21°C (70°F) DB. Upper limit ... Indoor : 35°C (95°F) DB, 22.5°C (72.5°F) WB, Outdoor : 52°C (125.5°F) DB.

PL-2.5KJC

17

0.09

0.79

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

16

0.19

0.76

Service Ref.

Temperature

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

PL-2KJC

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

5.3

5.7

5.8

5.9

6.0

6.4

0.83

0.85

0.86

0.87

0.88

6.9

7.4

7.6

7.7

7.8

8.3

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

4.9

5.2

5.4

5.5

5.6

5.9

0.97

0.99

1.00

1.01

1.02

1.04

6.4

6.8

7.0

7.1

7.2

7.7

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

4.7

5.1

5.2

5.3

5.8

1.03

1.05

1.06

1.07

1.08

1.12

6.1

6.6

6.7

6.8

6.9

7.5

4.5

4.8

5.0

5.1

5.2

5.5

1.10

1.13

1.15

1.16

1.17

1.21

5.8

6.2

6.4

6.6

6.7

7.1

4.2

4.4

4.6

4.8

5.1

1.18

1.22

1.24

1.25

1.26

1.32

5.4

5.7

6.0

6.2

6.7

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

5.1

5.5

5.6

5.8

6.2

0.90

0.92

0.93

0.94

0.96

6.7

7.1

7.3

7.4

7.5

8.0

21$C

(69.8$F)

25$C

(77$F)

30$C

(86$F)

32.2$C (90$F)

35$C

(95$F)

40$C

(104$F)

40.6$C

(105$F)

45$C

(113$F)

46$C

(115$F)

50$C

(122$F)

52$C

(125.5$F)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

16$C (60.8$F

)

18$C (64.4$F

)

19$C (66.2$F

)

19.4$C (67$F

)

20$C (68$F

)

22$C (71.6$F

)

5.5

5.8

5.9

6.0

6.2

6.5

5.1

5.4

5.6

5.7

5.8

6.2

4.7

5.1

5.2

5.3

5.8

4.5

4.8

5.0

5.1

5.2

5.5

4.2

4.5

4.7

4.8

4.9

5.2

0.81

0.82

0.83

0.84

0.85

0.91

0.93

0.95

0.96

0.98

1.03

1.05

1.06

1.07

1.08

1.12

1.09

1.12

1.14

1.15

1.16

1.20

1.16

1.19

1.21

1.22

1.23

1.28

0.83

0.85

0.86

0.87

0.88

0.97

0.99

1.00

1.01

1.02

1.04

1.03

1.05

1.06

1.07

1.08

1.12

1.10

1.13

1.15

1.16

1.17

1.21

1.18

1.22

1.24

1.25

1.26

1.32

0.90

0.92

0.93

0.94

0.96

0.81

0.82

0.83

0.84

0.85

0.91

0.93

0.95

0.96

0.98

1.03

1.05

1.06

1.07

1.08

1.12

1.09

1.12

1.14

1.15

1.16

1.20

1.16

1.19

1.21

1.22

1.23

1.28

7.1

7.5

7.7

7.8

8.0

8.4

6.6

7.0

7.2

7.4

7.5

8.0

6.1

6.6

6.7

6.8

6.9

7.5

5.9

6.2

6.5

6.7

6.8

7.1

5.5

5.9

6.1

6.2

6.3

6.7

Indoor WBOutdoor DB

C.F.

(T.I.)

T. C.C.F.

(T.I.)

T. C.

Cooling capacity correction factors 60Hz

PL-1.6KJC PL-2KJC PL-2.5KJC

Service Ref.

Refrigerant piping length (one way)

5m (16ft)

1.0

10m (33ft)

0.990

0.985

0.978

15m (49ft)

0.983

0.975

0.963

20m (66ft)

0.976

0.964

0.948

25m (82ft)

–

0.954

0.934

30m (98ft)

–

0.944

0.921

35m (115ft)

– – –

40m (131ft)

– – –

9

2. STANDARD OPERATION DATA

w The air coverage range is the value up to the position where the air speed is 0.25 m/sec. when air is blown out horizontally

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

The unit of pressure has been changed to Mpa based on the international SI system. The converston factor is : 1(Mpa.G)=10.2(of/

f

.

G)

3. ADDITIONAL REFRIGERANT CHARGE (R-22

......

Kg(lbs))

4. OUTLET AIR SPEED AND COVERAGE RANGE

Capacity Input

Indoor unit Service Ref.

phase, Hz Volts Amperes

Outdoor unit Service Ref.

phase, Hz Volts Amperes Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

W

kW

V A

$C $C $C

m

DB$C

WB$C

DB$C DB$C

WB$C

PL-1.6KJC

cooling

3,800

1.54

PL-1.6KJC

1, 50

220

0.59

PU-1.6VLJA

2

1, 50

220

7.7

(19.8)

(5.3)

62.3

37.4

8.3 5

27 19

17.1 35 24

cooling

5,600

2.57

1, 50

220

0.60

PU-2VJA

2

1, 50

220

11.3

(19.9)

(4.6)

75.9

48.9

13.1 5

27 19

15.5

35 24

PL-2KJCService Ref.

Electrical circuit TotalRefrigerant circuit

Indoor side

Outdoor

side

MODE

PL-2.5KJC

PL-2KJC PL-2.5KJC

cooling

5,400

2.59

1, 60

220

0.65

PU-2NJA

1

1, 60

220

11.9

(19.9)

(4.9)

63.6

46.0

5.8 5

27 19

14.6 35 24

cooling

6,500

2.59

1, 50

220

0.60

PU-2.5VJA

2

1, 50

220

12.5

(19.6)

(4.9)

74.3

46.4

10.3 5

27 19

13.1

35 24

cooling

7,000

3.05

1, 60

220

0.66

PU-2.5NJA

1

1, 60

220

13.5

(20.7)

(4.8)

83.4

47.6

7.2 5

27 19

13.0 35 24

Mpa.G

(kgf/F.G)

Mpa.G

1.94

0.52

1.95

0.45

1.95

0.48

1.92

0.48

2.03

0.47

(kgf/F.G)

Service Ref.

PL-1.6KJC PL-2KJC PL-2.5KJC

Outdoor unit precharged (kg)

(up to 20m)

V

...

1.3

V

...

1.78, N

...

1.9

V

...

2.4, N

...

2.4

Refrigerant piping length (one way)

20m(66ft)

0 0 0

25m(82ft)

–

0.06(0.13)

30m(98ft)

–

0.12(0.26)

35m(115ft)

– – –

40m(131ft)

– – –

Air flow Air speed Coverage range Air flow Air speed Coverage range Total width of discharge outlets

CMM

m/sec.

m

CMM

m/sec.

m

mm

PL-1.6KJC

15.0

5.2

5.7

16.0

5.6

6.0 0

PL-2KJC

16.0

5.6

6.0

17.0

5.9

6.4 0

PL-2.5KJC

17.0

5.9

6.4

18.0

6.3

6.8 0

Standard

High ceiling

10

5

OUTLINES AND DIMENSIONS

1. INDOOR UNIT PL-1.6KJC / PL-2KJC / PL-2.5KJC

Terminal block

for remote controller

Power terminal block

Drain water release hole

Ceiling hole

Suspension bolt pitch

640

690~710

25~3525~35

117

186

660

117

13

64

77 507

25~35

145

154

25~35

Suspension bolt pitch

690~710

117117

660

68

2

1

75 65

65~80

115

253

29830

54

+3

-2

42

Drain pipe

Connected to VP-25

Inspection hole

(Drain up machine)

Keep approximately

10 to 15mm space

between unit ceiling and ceilimg slab.

Ceiling side

Suspension bolt M10

or W3/8

Suspension bolt lower edge

Control wire opening

135

435

54

+3

-2

Power switch wire opening

Refrigerant piping side

Wiring arrangement opening side

A (Indication area)

Wired panel

A

Connect the attached

flexible pipe or socket.

466

Air intake

460

66 35

6635

760

Air outlet

460

760

Air outlet

466

Air intake

Grill

Vane motor

4-Auto vane

Intake grille opening closing side.

Intake grille

(Air intake)

Optional multifunctional casement

Optional high performance filter

1 (Liquid) 2 (Gas)

1/6/2/2.5

Refrigerant pipe {9.52

Flaredconnection 3/8F

Refrigerant pipe {15.88

Flaredconnection 5/8F

Note 1:

Note 2:

Note 3:

For the installation of the optional humidifier(suspended type), it

requires minimum 360mm space between transom and ceiling.

Electrical box may be removed for the service purpose. Make

sure to slack the electrical wire little bit for control/power wires

connection.

For the installation of the optional high efficiency filter or optional

multiple casement, it requires minimum 440mm space between

transom and ceiling for the installation (Optional high

performance filter can be also installed).

11

2. REMOTE CONTROLLER

Remote controller cable installation

MITSUBISHI ELECTRIC

12 11 10

9 8 7 6 5 4 3 2 1

29 28 27 26 25 24 23 22 21 20 19 18

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL

ON/OFF

LOUVER

MODE

SELECT

FAN

SPEED

TIMER

MODE

DRY FAN

HIGH

LOW

ON

AUTO

STOP

START

75

69

108(4-1/4)

117(4-5/8)

108(4-1/4)

96.5

12(15/32)

90.5

11.6

3.6

33

117(4-5/8)

33

Rear side wiring arrangememt opening

Upper side wiring arrangement opening

Fixing hole

83.5(3-9/32)

12(15/32)

86

4.6

46

9.2

MITSUBISHI ELECTRIC

12 11 10

9 8 7 6 5 4 3 2 1

29 28 27 26 25 24 23 22 21 20 19 18

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL

ON/OFF

LOUVER

MODE

SELECT

FAN

SPEED

TIMER MODE

DRY FAN

HIGH

LOW

ON

AUTO STOP

START

Exposed remote controller cable

Cable connection is only from the top. (right, left and bottom not possible)

Remote controller cable

Conduit tube (local arrangement)

Switch box (local arrangement)

Set screw (match with switch box), local arrangement.

●For exposed remote controller cable installation

Note : The cable for the remote controller is 5m (16ft) and 12-core with connectors O.D. ø 5.8.

●For recessed remote controller cable installation

Unit : mm (inch)

12

NOTES:

1. Since the Indoor fan motor (MF) is connected with 220V power, using 230,

240V power will require a setting change of the dip switch (SW<I. B>) on the indoor controller board as shown in fig : ❈1.

2. Since the indoor transformer (T) is connected with 220V power, using 230,

240V power will require a wiring connection change as shown in fig : ❈2.

3. Since the outdoor side electric wiring may change, be sure to check the

outdoor unit electric wiring for servicing.

4. Emergency operation

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

WIRING DIAGRAM

6

[Check items] (1) Compressor and fan. (2) Check the trouble position using self diagnostic function. If the result of self

diagnosis indicates protective device such as freeze protection is functioning,

emergency operation is not possible unless the cause is removed. (3) Do not attempt emergency operation when drain pump fails (drain overflows). (4) Emergency operation will continuously run with power ON/OFF (ON/OFF with

remote controller is not possible).

[Emergency operation procedure] (1) Set the dip switch (SW3<I.B>) on the indoor controller board to 1.2 on and 3

off for cooling. (2) Turn on outdoor unit side circuit breaker, then indoor unit side circuit breaker in

this order. (3) During emergency operation indoor fan runs at high speed but vane remains

stop. (4) Thermostat will not function. (5) Emergency cooling should be limited to 10 hours maximum (the indoor unit

heat exchanger may freeze).

SYMBOL NAME

I.B

MF

MV

LS

RT1

RT2

DS

DP

T

C1

TB2

TB4

CND<I.B>

FAN1<I.B>

CNV<I.B>

CNP<I.B>

CN30<I.B>

CN120<I.B>

CN23<I.B>

CN20<I.B>

CN21<I.B>

INDOOR CONTROLLER BOARD

INDOOR FAN MOTOR

VANE MOTOR

LIMIT SWITCH

ROOM TEMPERATURE THERMISTOR (0°C/15k1, 25°C/5.4k1)

INDOOR COIL THERMISTOR (0°C/15k1, 25°C/5.4k1)

DRAIN SENSOR

DRAIN PUMP

TRANSFORMER

INDOOR FAN CAPACITOR

POWER SUPPLY TERMINAL BLOCK

INDOOR/OUTDOOR CONNECTING WIRE TERMINAL BLOCK

POWER SUPPLY CONNECTOR

FAN MOTOR CONNECTOR

VANE MOTOR CONNECTOR

DRAIN PUMP CONNECTOR

INDOOR/OUTDOOR CONNECTING WIRE CONNECTOR

REMOTE CONTROLLER TRANSMISSION WIRE CONNECTOR

VANE POSITION CONNECTOR

INTAKE CONNECTOR

PIPE CONNECTOR

PL-1.6KJC / PL-2KJC / PL-2.5KJC

SYMBOL

NAME

CN50<I.B>

CN51<I.B>

CN2A<I.B>

CN2B<I.B>

CN28<I.B>

CN2<I.B>

SW1<I.B>

SW2<I.B>

SW3<I.B>

SWA<I.B>

SWB<I.B>

SWC<I.B>

X1<I.B>

X3<I.B>

X4<I.B>

F1<I.B>

F2<I.B>

ZNR<I.B>

H

R.B

CNR120<R.B>

DRAIN SENSOR CONNECTOR

MULTIPLE CONNECTOR

TRANSMISSION WIRES No.1 CONNECTOR

TRANSMISSION WIRES No.2 CONNECTOR

TIME SHORTENING CONNECTOR

TIMER ADAPTOR CONNECTOR

FUNCTION SWITCH

UNIT SWITCH

EMERGENCY OPERATION SWITCH

HIGH CEILING, NOISE SAVING SWITCH

NUMBER OF AIR OUTLETS SWITCH

OPTION SWITCH

DRAIN PUMP/D.HEATER RELAY

VANE MOTOR RELAY

FAN MOTOR RELAY

FUSE (6.3A)

VARISTOR

DEW PREVENTION HEATER

REMOTE CONTROLLER BOARD

CONNECTOR (REMOTE CONTROLLER TRANSMISSION WIRE)

SYMBOL NAME

SW1<R.B>

SW2<R.B>

SW3<R.B>

SW4<R.B>

SW5<R.B>

SW6<R.B>

SW7<R.B>

SW8<R.B>

LD1<R.B>

LD3<R.B>

LD4<R.B>

LD5<R.B>

LD6<R.B>

LD7<R.B>

LD8<R.B>

LD9<R.B>

LD10<R.B>

LD11<R.B>

LD12<R.B>

LD13~24<R.B>

ON/OFF SWITCH

MODE SWITCH

FAN SPEED HIGH/LOW SELECTOR SWITCH

VANE ON/OFF SWITCH

DISPLAY SWITCH

SET TEMPERATURE/TIMER UP SWITCH

SET TEMPERATURE/TIMER DOWN SWITCH

TIMER MODE SWITCH

RUN INDICATOR LED

COOLING INDICATOR LED

FAN MODE INDICATOR LED

FAN HIGH INDICATOR LED

VANE ON INDICATOR LED

INDICATOR MODE TEMPERATURE LED

INDICATOR MODE TIMER LED

DRY INDICATOR LED

FAN LOW INDICATOR LED

OFF TIMER INDICATOR LED

ON TIMER INDICATOR LED

TEMPERATURE TIMER REMAINING TIME INDICATOR LED

MF

MV

1 2 3

1 3 5

1 2

2 7

1 3

X4

X3 X1

ZNR

C1

RED

WHT

BLK

YLW

FAN1

FAN

CNV

VAME

CN2B

TWN1

2 1

3

CN2

TIMER

2 1

3

4

5

CN51

MULTIPLE

4 5

3

2

1

2

1

2

1

2

3

1

12

2 1

2

1

2

1

CN50

DRAIN

CN21

PIPE

CN30

OUTDOOR

CN23

VANE

CN28

LINE TEST

CN120

TO.R.C

CN20

INTAKE

1 2

CN2A

TWN2

123

JR01

SW3

12345678

SW1

JR02

JR03

JR04

JR05

JR06

12345678

12345

3 2 1

SW2

SWA

2 3 4

SWB

STD OP

SWC

I.B

ON OFF

PL-1.6KJC

Service Ref.

SW1

12345678

ON OFF

PL-2KJC

12345678

ON OFF

PL-2.5KJC

LD8

LD13

LD1 LD3

LD9 LD4

LD5 LD10

LD6

LD11 LD12

LD14 LD15 LD16 LD17 LD18 LD19 LD20 LD21 LD22 LD23 LD24

LD7

SW5

SW6

SW7

SW8

SW4

SW3

SW2

SW1

R.B.

12

CNR120

1 2 3 4

DS

RT1 RT2

GRY

BLK

BRN

YLW

ORN

TB4

TO OUTDOOR UNIT CONNECTING WIRES 12V DC

N

L

TB2

GRN/YLW

POWER SUPPLY ~(1PHASE) 220-240V AC 50Hz 220V AC 60Hz

1 2

1LB6

CNP

D.U.M

F2 F1

YLW

1 3

4 3 2 1

CND

POWER

CNT

TARNS

CN4T

TARNS

DP

N

BRN

5

10

BLU

BRN

RED

BLU

WHT

RED

220V

230V

240V

ORN

YLW

BLU

RED BRN

T

14.5V AC 10.6V AC

fig : 1

Indoor fan motor (MF) for 230, 240V.

1 2 3 4 5 6 7 8

SW1

ON OFF

1 2 3 4 5 6 7 8

SW1

ON OFF

When power supply is

230V 240V

fig : 2

220V

RED

230V

ORANGE

240V

YELLOW

13

INDOOR UNIT

PL-1.6KJC PL-2KJC

Indoor heat exchanger

OUTDOOR UNIT

PU-1.6JA PU-2JA

Outdoor heat exchanger

Capillary tube for injection (Only PU-2)

Distributor

Flexible tube

Flared connection

Ball valve

(with service port) Refrigerant pipe {9.52(3/8) (With insulator) option

Refrigerant pipe {15.88(5/8) (With insulator) option

Accumulator

Compressor

Capillary tube

Capillary tube size

: flow of refrigerant

PU-1.6(O.D.3.2XI.D.1.8–R900) PU-2 (O.D.3.2

X

I.D.2.0–R430)

Strainer

Check plug

High pressure switch

Low pressure switch

Charge plug

Ball valve

INDOOR UNIT

PL-2.5KJC

Indoor heat exchanger

OUTDOOR UNIT

PU-2.5JA

Outdoor heat exchanger

Capillary tube PU-2.5 (O.D.3.2XI.D.1.6–R760) x2pcs

Distributor

Flexible tube

Flared connection

Ball valve

(with service port) Refrigerant pipe {9.52(3/8) (With insulator) option

Refrigerant pipe {15.88(5/8) (With insulator) option

Accumulator

Compressor

: flow of refrigerant

Strainer

Check plug

High pressure switch

Low pressure switch

Charge plug

Ball valve

7 REFRIGERANT SYSTEM DIAGRAM

PL-1.6KJC / PU-1.6VLJA2, PL-2KJC / PU-2VJA

2

, PU-2NJA

1

PL-2.5KJC / PU-2.5VJA2, PU-2.5NJA1

14

OPERATION FLOW-CHART8

1. Main operation

1

Start

POWER SUPPLY

Live

ON/OFF

button ON

TIMER MODE

button ON

During

operation

AUTO STOP lamp ON AUTO START lamp ON

Auto start timer 1 12Hr up/ press 12 1Hr down/ press

Abnormal

operation mode

MODE SELECT

button

EMERGENCY

ALL STOP

STOP

Self-diagnostic function

Indicate & Memory

Protection device

Self hold

Protection device

Self hold reset

COOL OPERATION

DRY OPERATION

POWER lamp ON

NO

DRY

COOL

YES

YES YES

YES

Auto stop timer 1 12Hr up/ press 12 1Hr down/ press

Set time Elapsed time=0

Note 1. Refer to page 22 for timer mode details. Note 2. The unit starts operation by pressing the ON / OFF switch when unit is OFF.

During operation, the unit stops operation by pressing the ON / OFF switch. In addition, operation can be turned ON / OFF with the contralized remote controller or the remote switch.

Note 3. The factors which cause "abnormal operation mode" are as follows.

●Outdoor unit abnormal operation.

●Fault of room temperature thermistor (RT1).

●Fault of indoor coil thermistor (RT2).

●Indoor coil frost protection mode.

●Drain water overflow prevention mode.

Refer to page 25 for abnormal operation mode details. Note 4. The indoor fan runs on the low speed for 1 minute to eliminate remaining heat. Note 5. The compressor will not start for 3 minutes after the stop.