Mitsubishi PL-1.6KJB.UK, PL-2KJB.UK, PL-2.5KJB.UK 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]

PL-1.6KJB PL-2KJB PL-2.5KJB

[Service Ref.]

PL-1.6KJB.UK PL-2KJB.UK PL-2.5KJB.UK

No. OC146

1997

This manual does not cover the following outdoor units. When serving them, please refer to the service manual No.OC149 and this manual in a set. <Service Ref.> PU-1.6VLJA

2.UK

PU-2VJA

2.UK

PU-2NJA

1.UK

PU-2.5VJA

2.UK

PU-2.5NJA

1.UK

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

1

FEATURES

Indoor unit

Ceiling Cassettes

Series PL

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

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 filter

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.

Cooling capacity (50/60Hz)

W

3,800/ – 5,600/5,400 6,500/7,000

13,000/ – 19,100/18,400 22,200/23,900

Btu/h PL-1.6KJB.UK PL-2KJB.UK PL-2.5KJB.UK

3

PART NAMES AND FUNCTIONS2

6.COMPACT DIMENSIONS MEAN EASY INSTALLATION

(1)Carefree suspension work with lightweight unit

The new unit weighs in at 20kg 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.

● Indoor Unit PL-1.6KJB.UK

PL-2KJB.UK PL-2.5KJB.UK

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.

Downward Air Outlet Sets airflow downward automatically during heating.

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

SPECIFICATIONS5

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-1.6KJB.UK

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.UK

–

1.2/-

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-2KJB.UK

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-2VJA2.UK, 2NJA1.UK

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-2.5KJB.UK

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.UK, 2.5NJA1.UK

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-1.6KJB.UK PL-2KJB.UK PL-2.5KJB.UK

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.

Service Ref. PL-1.6KJB.UK / PL-2KJB.UK / PL-2.5KJB.UK

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

1. STANDARD SPECIFICATIONS

(Indoor / Outdoor)

Rating conditions (JIS B 8616)

6

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)

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

1ph. 3ph. 1ph. 3ph.

50Hz

60Hz

Power supply

Service Ref. (Indoor unit)

PL-1.6KJB.UK

PU-1.6VLJA

2.UK

– – –

PL-2KJB.UK

PU-2VJA

2.UK

–

PU-2NJA

1.UK

–

Model name (Outdoor unit)

PL-2.5KJB.UK

PU-2.5VJA

2.UK

–

PU-2.5NJA

1.UK

–

PL-1.6KJB.UK

0.59

0.12

0.80

PU-1.6

A

kW

A

PL-2KJB.UK

0.60

0.13

0.80

PU-2

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

PL-2.5KJB.UK

0.60

0.13

0.80

PU-2.5

PL-1.6KJB.UK

0.62

0.13

0.80

PU-1.6

PL-2KJB.UK

0.63

0.14

0.80

PU-2

PL-2.5KJB.UK

0.63

0.14

0.80

PU-2.5

Power supply (1 Phase)

Service Ref.

Current Input Starting current Outdoor unit

PL-1.6KJB.UK

0.64

0.14

0.80

PU-1.6

A

kW

A

PL-2KJB.UK

0.65

0.15

0.80

PU-2

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

PL-2.5KJB.UK

0.65

0.15

0.80

PU-2.5

PL-2KJB.UK

0.65

0.14

0.80

PU-2

PL-2.5KJB.UK

0.66

0.14

0.80

PU-2.5

Power supply (1 Phase)

Service Ref.

Current Input Starting current Outdoor unit

7

DATA4

1. PERFORMANCE DATA

Cooling capacity 50Hz

PL-2.5KJB.UKPL-2KJB.UK

17

0.14

0.72

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

16

0.20

0.74

15

0.21

0.67

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-1.6KJB.UK

0.81

0.82

0.83

0.84

0.86

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

)

3.7

4.0

4.1

4.2

4.5

0.84

0.85

0.86

0.87

0.89

5.5

5.9

6.0

6.1

6..2

6.6

0.84

0.85

0.86

0.87

0.89

6.4

6.8

7.0

7.1

7.2

7.7

0.84

0.85

0.86

0.87

0.89

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

)

3.4

3.7

3.8

3.9

4.2

0.96

0.99

1.00

1.01

1.04

5.1

5.4

5.6

5.7

5.8

6.2

0.96

0.99

1.00

1.01

1.04

5.9

6.3

6.5

6.6

6.7

7.2

0.96

0.99

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.11

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

3.5

3.6

3.7

4.0

1.04

1.06

1.08

1.09

1.12

4.8

5.2

5.3

5.4

5.5

5.9

1.04

1.06

1.08

1.09

1.12

5.6

6.0

6.2

6.3

6.4

6.8

1.04

1.06

1.08

1.09

1.12

1.10

1.12

1.14

1.15

1.16

1.20

3.1

3.3

3.4

3.5

3.6

3.8

1.11

1.14

1.15

1.16

1.17

1.21

4.6

4.9

5.1

5.2

5.6

1.11

1.14

1.15

1.16

1.17

1.21

5.3

5.7

5.9

6.0

6.1

6.5

1.11

1.14

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

1.19

1.22

1.24

1.25

1.26

1.31

4.3

4.6

4.7

4.8

4.9

5.3

1.19

1.22

1.24

1.25

1.26

1.31

4.9

5.3

5.5

5.6

5.7

6.1

1.19

1.22

1.24

1.25

1.26

1.31

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

5.3

5.6

5.8

5.9

6.0

6.4

0.90

0.92

0.93

0.94

0.96

6.1

6.6

6.8

6.9

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

(69.8$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

3.5

3.8

3.9

4.0

4.3

3.3

3.5

3.6

3.7

3.8

4.0

3.1

3.4

3.5

3.6

3.8

3.0

3.2

3.3

3.4

3.7

5.6

6.0

6.2

6.4

6.7

6.5

6.9

7.2

7.3

7.4

7.8

5.2

5.5

5.7

5.8

5.9

6.3

6.0

6.4

6.6

6.7

6.9

7.3

4.9

5.2

5.4

5.5

5.9

5.6

6.0

6.2

6.3

6.4

6.9

4.6

4.9

5.1

5.2

5.3

5.7

5.4

5.7

5.9

6.0

6.1

6.6

4.4

4.7

4.9

5.0

5.4

5.1

5.4

5.6

5.7

5.8

6.3

0.81

0.82

0.83

0.84

0.86

0.81

0.82

0.83

0.84

0.86

0.93

0.95

0.96

0.97

0.99

0.93

0.95

0.96

0.97

0.99

0.93

0.95

0.96

0.97

0.99

1.03

1.06

1.07

1.08

1.11

1.03

1.06

1.07

1.08

1.11

1.10

1.12

1.14

1.15

1.16

1.20

1.10

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) o 860, (Btu/h) = 4 o (kW) o 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.

wVL ... Outdoor : 46°C (115°F) DB.

Cooling capacity correction factors 50Hz

PL-1.6KJB.UK PL-2KJB.UK PL-2.5KJB.UK

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) o 860, (Btu/h) = 4 o (kW) o 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-2.5KJB.UK

17

0.20

0.75

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

16

0.21

0.68

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-2KJB.UK

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

5.6

5.8

5.9

6.0

6.4

0.84

0.85

0.86

0.87

0.89

6.9

7.3

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

0.96

0.99

1.00

1.01

1.04

6.3

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

5.0

5.1

5.2

5.3

5.7

1.04

1.06

1.08

1.09

1.12

6.0

6.4

6.7

6.8

6.9

7.4

4.4

4.7

4.9

5.0

5.4

1.11

1.14

1.15

1.16

1.17

1.21

5.7

6.1

6.3

6.4

6.5

7.0

4.1

4.4

4.6

4.7

5.1

1.19

1.22

1.24

1.25

1.26

1.31

5.3

5.7

5.9

6.0

6.1

6.6

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

5.4

5.6

5.7

5.8

6.2

0.90

0.92

0.93

0.94

0.96

6.6

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

)

5.4

5.8

6.0

6.1

6.5

5.0

5.3

5.5

5.6

5.7

6.1

4.7

5.0

5.2

5.3

5.7

4.4

4.8

4.9

5.0

5.1

5.5

4.2

4.5

4.7

4.8

5.2

0.81

0.82

0.83

0.84

0.86

0.93

0.95

0.96

0.97

0.99

1.03

1.06

1.07

1.08

1.11

1.10

1.12

1.14

1.15

1.16

1.20

1.16

1.19

1.21

1.22

1.23

1.28

0.84

0.85

0.86

0.87

0.89

0.96

0.99

1.00

1.01

1.04

1.06

1.08

1.09

1.12

1.11

1.14

1.15

1.16

1.17

1.21

1.19

1.22

1.24

1.25

1.26

1.31

0.90

0.92

0.93

0.94

0.96

0.81

0.82

0.83

0.84

0.86

0.93

0.95

0.96

0.97

0.99

1.03

1.06

1.07

1.08

1.11

1.10

1.12

1.14

1.15

1.16

1.20

1.16

1.19

1.21

1.22

1.23

1.28

7.0

7.5

7.7

7.8

7.9

8.4

6.5

6.9

7.2

7.3

7.4

7.9

6.1

6.5

6.7

6.8

6.9

7.4

5.8

6.2

6.4

6.5

6.6

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-2KJB.UK PL-2.5KJB.UK

Service Ref.

Refrigerant piping length (one way)

5m (16ft)

1.0

10m (33ft)

0.985

0.978

15m (49ft)

0.975

0.963

20m (66ft)

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.

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

$C $C $C

m DB$C WB$C DB$C DB$C WB$C

PL-1.6KJB.UK

cooling

3,800

1.54

PL-1.6KJB.UK

1, 50

220

0.59

PU-1.6VLJA2.UK

1, 50

220

6.7

62.3

37.4

6.3 5

27 19

17.1 35 24

cooling

5,600

2.57

1, 50

220

0.60

PU-2VJA2.UK

1, 50

220

11.3

75.9

48.9

13.1 5

27 19

15.5

35 24

PL-2KJB.UKService Ref.

Electrical circuit TotalRefrigerant circuit

Indoor side

Outdoor

side

MODE

PL-2.5KJB.UK

PL-2KJB.UK PL-2.5KJB.UK

cooling

5,400

2.59

1, 60

220

0.65

PU-2NJA1.UK

1, 60

220

11.4

63.6

46.0

5.8 5

27 19

14.6 35 24

cooling

6,500

2.59

1, 50

220

0.60

PU-2.5VJA2.UK

1, 50

220

11.4

74.3

46.4

10.3 5

27 19

13.1

35 24

cooling

7,000

3.05

1, 60

220

0.66

PU-2.5NJA1.UK

1, 60

220

13.4

83.4

47.6

7.2 5

27 19

13.0 35 24

1.94

(19.8)

0.52 (5.3)

1.95

(19.9)

0.45 (4.6)

1.95

(19.9)

0.48 (4.9)

1.92

(19.6)

0.48 (4.9)

2.03

(20.7)

0.47

(4.8)

Mpa·G

(kgf/FG)

Mpa·G

(kgf/FG)

Service Ref.

PL-1.6KJB.UK PL-2KJB.UK PL-2.5KJB.UK

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-1.6KJB.UK

15.0

5.2

5.7

16.0

5.6

6.0 0

PL-2KJB.UK

16.0

5.6

6.0

17.0

5.9

6.4 0

PL-2.5KJB.UK

17.0

5.9

6.4

18.0

6.3

6.8 0

Standard

High ceiling

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

10

5

OUTLINES AND DIMENSIONS

Unit : mm

Ceiling hole

Suspension bolt pitch

Suspension bolt M10 or

Air intake hole

Air outlet hole

Air intake grill

690~710 25~3525~35

640

660

466

460

66 35

760

117 117

117

435

13545

117

Ceiling hole

Suspension bolt pitch

Suspension bolt lower edge

Air outlet hole

690~710

25~35

65~80

760

460

466

6635

115

243

253

29330

54

+3

- 2

507

660

54

53

Terminal block for control

Terminal block for

remote controller

Terminal block for

power supply

Drain hole

VP-25 connection

W3/8

Feeding hole

(Drain pump)

Leave space of 10~15mm between the

top surface of the unit and the ceiling slab.

Ceiling surface

4-Auto vanes

Intake grill opening/closing side

Vane motor

Decorative panel

Control wire entry

Refrigerant piping side

electric wire entry side

Power line entry

41 25

Liquid pipe

Gas pipe

Optional high-efficiency hilter

NOTE1. For electrical parts box may be removed during servicing. When

connecting the power line and the control wire, provide enough length to

the electric wires.

NOTE2. When installing the optional high-efficiency filter, the dimension

between the transom and ceiling shall be more than 440mm. Also,when

installing the optional casement, the dimension between the transom

and ceiling shall be more than 440m. (The optional highefficiency filter

can also be installed.)

1

2

Refrigerant pipe Ø9.52

Flared connection 3/8F

Refrigerant pipe Ø15.88

Flared connection 5/8F

1.6/2/2.5KJ

1.INDOOR UNIT PL-1.6KJB.UK / PL-2KJB.UK / PL-2.5KJB.UK

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 10m (32ft) and 12-core with connectors O.D. ø 5.8.

●For recessed remote controller cable installation

Unit : mm (inch)

12

6

WIRING DIAGRAM

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-1.6KJB.UK / PL-2KJB.UK / PL-2.5KJB.UK

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 RALAY

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 SWITCH

VANE ON/OFF SWITCH

DISPLAY SWITCH

SET TEMPERATURE/TIMER UP SWITCH

SET TEMPERATURE/TIMER DOWN SWITCH

TIMER MODE SWITCH

RUN INDICATOR LED

COOLING INDICATORLED

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

(5)Em

ergency cooling should be lim

ited to 10 hours m

axim

am

. (the indoor unit heat exchanger m

ay freeze.)

(4)Therm

ostat will not function.

1.Since the indoor fan m

otor(M

F) is connected w

ith 220V pow

er, using 230, 240V pow

er w

ill require a setting change of the

dip sw

itch(SW

1<I.B>) on the indoor controller board show

ing fig:1.

2.Since the indoor transform

er(T) is connected w

ith 220V pow

er, if 230, 240V pow

er is used. C

hange the w

iring connection

show

ing fig:3.

(3)During em

ergency operation indoor fan runs at high speed but auto-vane does not work.

[Em

ergency operation procedure]

(1)Set the dip switch(SW

3<I.B>) on the indoor controller board to 1 , 2 on and 3 off for cooling

(2)Turn on the outdoor unit side circuit breaker, then the indoor unit side circuit breaker.

(3) Do not attem

pt em

ergency operation when drain pump fails(drain overflows).

(4) Emergency operation will be a continuous operation mode due to power ON/OFF.

(ON/OFF with the remote controller is not possible.)

[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 rem

ove.

If remote controller or microcomputer fails but there is no other trouble,em

ergency

operation is possible by setting dip switch(SW3<I.B>) on the indoor controller board.

[Emergency operation]

N

O

TES:

:C

onnector

:Term

inal block

3.Since the outdoor side electric w

iring m

ay change be sure to check the outdoor unit electric w

iring for servicing.

4.Sym

bols used in w

iring diagram

are the follow

ing.

Indoor fan m

otor(M

F) for 230, 240V

8

7

6

5

4

1

2

3

O

FF

8

7

6

5

4

1

2

3

O

FF

SW

1

O

N

O

N

SW

1

fig:1

8765

4

1

23

ON OFF

8765

4

1

23

ON OFF

78

4

56

fig:2

1.6KJ

2.5KJ

2KJ

OFF

ON

32

1

MODELS

SW1

1

2

31 3 1

3 2 1

2

1

3 4

1

5

4

3

2

1

3

5

10

DP

6

1

7

2

MV

MF

1

5

4

3

2

1

2

1

12

3

1

2

1

2

1

1234

3

1

31

3131

5

SW

8

SW

4

SW

3

SW

2

SW

1

SW

7

SW

6

LD11

LD12

LD6

LD10

LD5

LD1

LD4

LD9

LD3

SW

5

LD24

LD23

LD22

LD21

LD20

LD19

LD18

LD17

LD16

LD15

LD14

LD13

LD7

LD8

TO OUTDOOR UNIT CONNECTING WIRES DC 12V

CNR120

B

R

N

B

RN

LS

TWIN1

CN2A

TWIN2

CN2B

JR05

JR06

JR03

JR04

JR02

JR01

CN2

TIMER

F1

SWC

STD

OP

TO REMOCON

CN120

X1

X3

SW3

321

X4

X3

1

2

3

SWA

SW1

8765432143215

SW2

OFF

ON

2

SWB

4

3

CN51

MULTIPLE

RT2

DS

RT1

DRAIN

CN50

INTAKE

CN20

PIPE

CN21

CN30

OUTDOOR

CN23

VANE

CN28

LINETEST

R.B.

12

ORN YLW

1

2

TB4

BLK WHT

GRILL

H2

B

LU

B

LU

B

R

N

B

RN

BRN

CN4T

TRANS

10.6V AC

14.5V AC

BRN

RED

T

YLW

ORN

YLW

RED

WHT

BLU

RED

GRN/YLW

POWER SUPPLY

~(1PHASE)

220-240V 50Hz

220V 60Hz

N

L

TB2

YLW

C1

RED

F2

ZNR

X1

X4

TRANS

POWER

D.U.M.VANEFAN

CNT

CND

CNPCNVFA N1

13

REFRIGERANT SYSTEM DIAGRAM7

INDOOR UNIT

PL-1.6KJB.UK PL-2KJB.UK

Indoor heat exchanger

OUTDOOR UNIT

PU-1.6 PU-2

Outdoor heat exchanger

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

wCapillary tube size

: flow of refrigerant

PU-1.6(O.D.3.2

o

I.D.1.8-R900)

PU-2 (O.D.3.2

o

I.D.2.0-R430)

Strainer

Check plug

High pressure switch

Low pressure switch

Charge plug

Ball valve

PL-1.6KJB.UK, PL-2KJB.UK/PU-1.6VLJA2.UK,PU-2VJA2.UK,PU-2NJA1.UK

PL-2.5KJB.UK/PU-2.5VJA

2

.UK,PU-2.5NJA1.UK

Indoor heat exchanger

Indoor coil thermistor RT2

Distributor with strainer

Outdoor heat exchanger

Ball valve (with service port)

Flared connection

Flexible tube

Compressor

flow of refrigerant

wCapillary tube size

Capillary tube

Capillary tube for injection

Flared connection

Low pressure switch

High pressure switch

Refrigerant pipe

15.88 (5/8)

(With insulator) option

Refrigerant pipe

9.52 (3/8)

Strainer

Ball valve

Check plug

Charge plug

Accumulator

PU-2.5 (O.D.3.2oI.D.1.6-R760)o2pcs

PL-2.5KJB.UK PU-2.5

14

8

OPERATION FLOW-CHART

Models : PL-KJB.UK

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 21~22 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.