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

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

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

0.83

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

0.86

0.87

0.88

5.3

5.7

5.8

5.9

6.0

6.4

0.83

0.85

0.86

0.86

0.87

0.88

6.4

6.8

7.0

7.2

7.3

7.8

0.83

0.85

0.86

0.86

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

3.8

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

3.6

3.7

3.8

4.1

1.03

1.05

1.06

1.07

1.08

1.12

4.7

5.1

5.2

5.2

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

3.6

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

3.3

3.6

1.18

1.22

1.24

1.25

1.26

1.32

4.2

4.4

4.6

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

4.0

4.1

4.3

0.90

0.92

0.93

0.93

0.94

0.96

5.1

5.5

5.6

5.8

5.8

6.2

0.90

0.92

0.93

0.93

0.94

0.96

6.2

6.6

6.8

6.8

7.0

7.4

0.90

0.92

0.93

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

4.3

4.6

3.6

3.8

3.9

4.0

4.1

4.3

3.3

3.6

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

3.3

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

5.2

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

5.5

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

5.7

5.9

6.2

0.81

0.82

0.83

0.83

0.84

0.85

0.81

0.82

0.83

0.83

0.84

0.85

0.91

0.93

0.95

0.95

0.96

0.98

0.91

0.93

0.95

0.95

0.96

0.98

0.91

0.93

0.95

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

1.0

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

0.86

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

5.2

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

4.6

4.8

5.1

1.18

1.22

1.24

1.25

1.26

1.32

5.4

5.7

6.0

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

5.8

6.2

0.90

0.92

0.93

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

5.2

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

0.83

0.84

0.85

0.91

0.93

0.95

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

0.86

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

0.93

0.94

0.96

0.81

0.82

0.83

0.83

0.84

0.85

0.91

0.93

0.95

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

1.0

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

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)

0.06(0.13)

30m(98ft)

–

0.12(0.26)

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

Terminal block

for remote controller

Power terminal block

Drain water release hole

Ceiling 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)

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

X4

X3 X1

X3 X1

ZNR

C1

RED

WHT

BLK

YLW

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

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

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

1 3

4 3 2 1

CND

POWER

CNT

TARNS

CN4T

TARNS

DP

N

BRN

5

10

BLU

BRN

BRN

BRN

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

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

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

STOP

Self-diagnostic function

Indicate & Memory

Protection device

Self hold

Protection device

Self hold reset

COOL OPERATION

DRY OPERATION

POWER lamp ON

NO

NO

NO

NO

NO

NO

NO

DRY

COOL

YES

YES

YES YES

YES

YES

YES

<Note 1>

<Note 3>

<Note 2>

<Note 5>

<Note 4>

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

Set time ­Elapsed time=0

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.

15

3-minute

time delay

Compressor start
3 minutes elapse

Compressor

start 10 minutes

elapse

Compressor

start 16 minutes

elapse

6-minute

time delay

Coil frost

protection

Coil frost

prevention

Indoor coil
temperature
1C or below

Indoor coil

temperature 10:

or more

3-minute time delay

Coil frost

prevention release

Coil frost

prevention set

Range C

Allowance release

Compressor ON Compressor OFF

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

COOL operation

<Note 6>

<Note 7>

<Note 8>

Compressor

thermostat ON

Allowance release

Allowance

Allowance set

6-minute time delay

Coil frost

protection

check mode

Continue
1 minute

Fan speed LOW

Fan speed LOW

5 minutes elapse

Outdoor unit abnor-

mality check mode

2. COOL operation

Note 6. The thermostat is continuously ON during the test run.
Note 7. Refer to page 18~19 for coil frost protection.
Note 8. Range A : Indoor coil temperature is more than 5 degrees above room temperature.

Range B : Indoor coil temperature is within 5 degrees either way of room temperature.
Range C : Indoor coil temperature is more than 5 degrees below room temperature.

16

3. DRY operation

Note 9. When the room temperature is 18°C or below, the compressor can not turn ON. When the room temperature rises to

18°C or above, the compressor will start operation after a 3-minute time delay.
Note 10. Refer to page 20 for the compressor operation time.
Note 11. In DRY operation, the indoor fan runs on the low speed during the compressor ON and stops during the compressor

OFF.

YES

DRY operation

Room temperature

18 C or below

NO

Compressor ON

<Note 9>

NO

NO

10-minute timer start

YES

Compressor ON

3 min.elapse

YES

Compressor

thermostat ON

YES

Compressor ON

time completed

YES

Compressor OFF

Compressor OFF

<Note 11>

Fan stop

<Note 6>

NO

NO

YES

3-minute

time delay

NO

Compressor

thermostat ON

NO

Compressor OFF

10 minutes completed

YES

<Note 10>

Compressor ON

time set

YES

Compressor ON

<Note 11>

Fan speed LOW

YES

<Note 6>

NO

1

17

MICROPROCESSOR CONTROL9

● OFF-ON switching.

● COOL/DRY-FAN selector switching.

● HIGH-LOW fan speed switching.

● Swing louvers SWING-FIXED switching.

● TIMER mode selector switching.

● Thermostat setting.

● Timer setting.

● Self diagnostic troubleshooting.

● Test run switching.

● Room temperature thermistor.

● Indoor coil thermistor.

● Drain sensor.

● Compressor protection device working

● Compressor motor and outdoor fan motor :

ON - OFF

● Fan : ON - OFF.

● Fan speed : HIGH - LOW

● Swing louvers : ON-OFF.

● Drain water lift-up mechanism : ON-OFF

● Emergency stop.

OUTPUT to indoor unit

INPUT from indoor unit

INPUT to remote controller

● Transmits and receives orders.

REMOTE CONTROLLER

OUTPUT to remote controller

INDOOR CONTROLLER BOARD

● Receives orders from remote controller and temperature data from
indoor unit.

● Processes orders and data.

● Transmits the power of indication LED to remote controller

● Controls indoor and outdoor operation.

● Self diagnostic function.

w System control operation.<Optional>
w Emergency operation.

12VDC

12VDC

Polar, twelve (12) - core cable
Maximum length 50m (164ft)

Non - polar, two (2) - core cable

12

Outdoor unit

● Indication LED lights.

Indoor unit
PL-KJC

OUTPUT to outdoor unit

INPUT from outdoor unit

OUTDOOR UNIT

● Receives order from indoor
controller.

● Emergency stop.

1.OUTLINE OF MICROPROCESSOR CONTROL

TIMER TEMP

TIMER/TEMP.

UP

DOWN

POWER

COOL
DRY
FAN

HIGH

LOW

ON

AUTO
STOP

START

MITSUBISHI ELECTRIC

29

12

28

11

27

10

26

9

25

8

24

7

23

6

22

5

21

4

20

3

19

2

18

1

ON/OFF

MODE

SELECT

FAN

SPEED

LOUVER

TIMER
MODE

18

2. INDOOR UNIT CONTROL

2-1COOL operation

(1) Compressor control

1 3-minute time delay

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

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

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

3 The compressor stops in check mode or during protective functions.
4 Coil frost prevention

To prevent indoor coil frost, the compressor will stop when the indoor coil thermistor (RT2) reads 1°C or below after the
compressor has been continuously operated for 16 minutes or more. The coil frost prevention is released under any of the
following conditions.

● The indoor coil thermistor rises to 10°C or above.

● The room temperature becomes equal to or lower than the set temperature.

● COOL mode is stopped or changed to another mode.

NOTE : By cutting the jumper wire JRO2 on the indoor controller board, the temperature to start coil frost prevention

changes from 1°C to -3°C.

<How to operate>

1 Press POWER ON/OFF button.
2 Press MODE SELECT button to set operation mode to COOL.

3 Check lamp is ON and set desired temperature with UP

or DOWN button.

NOTES : 1. When lamp is ON, press TIMER/TEMP button

to change the display to temperature mode.

2. Set temperature changes by 1°C in the range 18 ~ 29°C
each time UP or DOWN button is pressed.

3. The lighting lamp shows the set temperature, and the
flashing lamp shows the room temperature.
When the room temperature is equal to the set
temperature, the lamp keeps lighting, 0.5 seconds
brightly and 0.5 seconds faintly.

TIMER

<COOL operation time chart>

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

period has ended.

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

Operation starts by
POWER button
ON.

ON

Thermostat

OFF

TEMP.

Room temperature
becomes equal to
set temperature.

Room temperature
rises above set
temperature.

Operation stops by
POWER button
OFF.

ON

LOW or HIGHLOW or HIGH

Indoor fan

Louver

OFF

ON

OFF

Depends on remote controller setting

ON

Drain pump

OFF

ON

Compressor

OFF

MIN. 3 minutes w1

3 minutes

19

5 Coil frost protection

When indoor coil temperatuer becomes -15°C or below,coil frost protection will proceed as follows.

<Start condition>

After the compressor has been continuously operated for 3 minutes or more,and the indoor coil temperature has been ­15°C or below for 3 minutes,the coil frost protection will start.

<Coil frost protection>

Compressor stops for 6 minutes,and then restarts.
lf the start condition is satisfied again during the first 10 minutes of compressor operation,both the indoor and outdoor
units stop, and the remote controller displays this occurrence.

<Termination conditions>

Coil frost protection is released when the start condition is not satisfied again during the allowance, or when the COOL
mode stops or changes to another mode.

(2) Indoor fan control

Indoor fan speed 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.

(3) Louver control

Louver operation (SWING LOUVER ON / OFF) depends on the remote controller setting.

(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 the 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 will stops and the
remote controller will display this occurrence.
RANGE A : Indoor coil temperature is more than 5 degrees above room temperature.
RANGE B : Indoor coil temperature is within 5 degrees either way of room temperature.
RANGE C : Indoor coil temperature is more than 5 degrees below room tempetature.

(5) Dew prevention heater

To prevent dew from accumulating on the grill, dew prevention heater is continuously ON in COOL or DRY operation.
It is independant of the thermostat ON/OFF

(6) Drain pump control

The drain pump works in COOL or DRY operation. When COOL or DRY operation stops or changes to another mode, the
drain pump continues to operate for 3 more minutes. Even if the check mode starts during COOL or DRY operation, the
drain pump continues to operate for 3 more minutes.

<Drain sensor>

When both the drain pump and the unit are operating, the drain sensor detects the temperature. This temperature tells
whether the drain water level is above or under the drain sensor. If the drain water levels rises above the drain sensor due
to a drain pump malfunction, the unit will enter the check mode. The operation will stop and only the drain pump will
continue to operate for 3 more minutes. When either of the following conditions are satisfied, the drain sensor is deemed
under water.

● Though the drain sensor has been heated by the drain sensor heater for more than 40 seconds, its temperature rise is
less than 20 degrees.

● The drain sensor temperature is below 63°C.

2-2 DRY operation

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

<How to operate>

1 Press POWER ON/OFF button.
2 Press MODE SELECT button to set operation mode to DRY.

3 Check lamp is ON and set desired temperature with UP

or DOWN button.

NOTES : 1. When lamp is ON, press DISPLAY SELECT

button to change the display to temperature mode.

2. Set temperature changes by 1°C in the range 18 ~ 29°C
each time UP or DOWN button is pressed.

3. The lighting lamp shows the set temperature, and the
flashing lamp shows the room temperature.
When the room temperature is equal to the set
temperature, the lamp keeps lighting, 0.5 seconds
brightly and 0.5 seconds faintly.

TIMER

TEMP.

20

<DRY operation time chart>

MIN. 3 minutes

w2

ON

Thermostat

Indoor fan

Louver

Drain pump

Compressor

ON

ON

LOW speedLOW speed

ON

OFF

OFF

ON

OFF

3 minutes

OFF

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.

Depends on remote controller setting

w2 Even if the room temperature rises above the set temperature during this period, the compressor will not start

until this period has ended.

(1) Compressor control

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 higher than the set temperature.

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

3The compressor stops in check mode or during protective functions.
4The compressor will not start when the room temperature is below 18°C.

The compressor starts intermittent operation when the power is turned ON with room temperature above 18°C. The
compressor ON/OFF time depends on the thermostat ON/OFF and the room temperatures as follows.
After 3-minute compressor operation,

● If the room temperature thermistor reads above 28°C with thermostat ON, the compressor will operate for 6 more
minutes and then stop for 3 minutes.

● If the room temperature thermistor reads 26°C~28°C with thermostat ON, the compressor will operate for 4 more
minutes and then stop for 3 minutes.

● If the room themperature thermistor reads 24°C~26°C with thermostat ON, the compressor will operate for 2 more
minutes and then stop for 3 minutes.

● If the room temperature thermistor reads below 24°C 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) Louver & drain pump controls

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.

21

2-3 FAN operation

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

<How to operate>

1 Press POWER ON/OFF button.
2 Press MODE SELECT button to set operation mode to FAN.

NOTE : Temperature can not be set in FAN operation.

1 Indoor fan control

The indoor fan speed LOW/HIGH depends on the remote controller setting.

2 Louver control

The louver operation ON/OFF depends on the remote controller setting.

3 Drain pump control does not work in FAN operation. As an exception, when COOL mode changes to FAN mode, the drain

pump continues to operate for the first 3 minutes in FAN operation.

22

<Timer function>

AUTO STOP ·········Air conditioner stops after the set time lapses.
AUTO START ········Air conditioner starts after the set time lapses.

<How to operate

●

AUTO STOP timer>

1 While ● POWER I lamp is lighting, press TIMER MODE button.

■■■

STOP

and lamps turn ON.

2 Set the time for the AUTO STOP timer with the UP or DOWN button.

NOTE : The time setting is in 1 hour units up to 12 hours.

3 With the lapse of time, the timer lamps turn OFF one by one, showing

the remaining time.

4 To cancel the AUTO STOP timer and continue operation, press the

TIMER MODE button.
To cancel the AUTO STOP timer and stop operation, press the
POWER ON/OFF button.

<How to operate AUTO START timer>

1 While ❍ POWER I lamp is OFF, press TIMER MODE button.

■■■

START

and lamps turn ON.

2 Set the time for the AUTO START timer with the UP or DOWN button.

NOTE : The time setting is in 1 hour units up to 12 hours.

3 With the lapse of time, the timer lamps turn OFF one by one, showing

the remaining time.

4 To cancel the AUTO START timer and keep the unit OFF, press the

TIMER MODE button.
To cancel the AUTO START timer and start operation, press the
POWER ON/OFF button.

TIMER

2-4 TIMER operation

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

12
11
10

9
8
7
6
5
4
3
2
1

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

Green

lamps

Remaining time:2 hour
59 minutes to 2 hour

TIMER TEMP.

12
11
10

9
8
7
6
5
4
3
2
1

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

1 hour 59 minutes
to 1 hour

TIMER TEMP.

12
11
10

9
8
7
6
5
4
3
2
1

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

59 minutes to 0

12
11
10

9
8
7
6
5
4
3
2
1

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

Time counting
is completed.

TIMER TEMP. TIMER TEMP.

<Remaining time display>

NOTE : When AUTO STOP timer is active, the remaining time display can be changed to the temperature display by pressing

DISPLAY button.

AUTO

AUTO

The green lamps show the remaining time until the time is up. When the time is up, the green lamps are all off.

I

TIMER TEMP.

TIMER

23

2-5 Test run

The unit starts the test run by pressing both the UP and DOWN buttons simultaneously for more than two seconds
during lamp ON or the unit OFF.

● The test run automatically stops in 2 hours.

● Set temperature is not displayed during test run.

● To cancel the test run, press the POWER ON/OFF button.

<Initial setting>

The units are set as follows by the factory.

1) Initial operation mode: FAN 3) Swing louver :OFF

2) Fan speed : LOW 4) Set temperature : 28°C

2-6 Emergency operation

When the remote controller or microprocessor malfunctions and
no other trouble exists, emergency operation is available by
setting the dipswitch on the indoor controller board.

[Check items]

1 Make sure the compressor and the fans are running normally.
2 Locate the trouble with the self-doagnostic function. If the self-

doagnostic function indicates that the protection device (such
as coil frost protection)is functioning, the sources must be
removed before attempting emergency operation.
Emergency operation ON/OFF is activated not with the remote
controller but with the circuit breaker.

[Emergency operation procedure]
1 Cooling operation is available by setting the dipswitch SW3

1and 2 ON and 3 OFF on the indoor controller board.

2 To start emergency operation, turn the outdoor side circuit

breaker ON first, and then the indoor side circuit breaker ON.

3 During emergency operation, the indoor fan runs on HIGH

speed, the compressor runs continuously, and the louver stops.
When the drain pump is attached, it works in emergency
operation.

4 Thermostat will not function.
5 Do not use emergency cooling operation for more than 10

hours, as the indoor coil may freeze.
w If the self-diagnostic function shows a drain pump malfunction,
do not attempt emergency operation, as the drain may overflow.

2-7 Auto Restart function

Unit can be start / stop by turning the breaker ON / OFF.

1) Cutting the JR06 on the indoor board.
Unit can be start / stop using the remote controller. Only in case the unit was operated before a power cut, the unit will
restart automatically after power is back.

2) Short all the CN2 on the indoor board.
Unit can not be start / stop using remote controller.
Unit will restart automatically whether the unit was operated or stopped when the power was cut off.

INDOOR CONTROLLER BOARD

TIMER

SW3

JR06

Original

Cut

Auto restart

Not available

Available

1
2
3

CN2

ORN

BRN
RED

Optional timer adapter
PAC-SA89TA-E

2-8 Function of jumper wire and dipswitch on indoor controller board

1. Jumper wire

1 JR01

...

Jumper wire for the auto vanes.

Cut JR01 for the unit WITHOUT auto vanes.

2 JR02

...

Jumper wire for the temperature to start coil frost prevention

Cutting JR02 changes the temperature from +1°C to -3°C.

3 JR03

...

Jumper wire for set temperature adjustment in HEAT mode.

In HEAT operation, heated air stagnates in the upper part of the room. The indoor unit installed in the upper part of the
room will detect the air temperature higher than the actual temperature in the living space. This difference is about 4
degrees. Therefore, the temperature detected by the room temperature thermistor should be corrected 4 degrees down.
The unit with JR04 attached will make this adjustment.

4 JR04

...

Jumper wire for the indoor fan speed during thermostat OFF in HEAT mode

Cutting JR04 changes the speed from Extra-Low to Low.

5 JR05

...

Jumper wire for detecting abnormalities in the outdoor unit

Cutting JR05 makes this detection unavailable. (Occurrence of abnormality can not be detected. )

6 JR06

...

Jumper wire for auto restart function

Cutting JR06 makes the auto restart function available.

2. Dipswitch

1 SW1 (Function switch)

SW1-1) Switch for power supply

ON : 220V
OFF : 230V, 240V

SW1-2) Switch for single or twin control

ON : Twin control
OFF : Single control

SW1-3) Switch for unit number in twin control (This switch is valid when SW1-2 is ON. )

ON : Unit No. 2
OFF : Unit No. 1

SW1-4~SW1-6 Switch for capacity of each model

SW1-7, SW1-8 Switch for the pair number of wireless remote controller

2 SW2 (Unit switch)

SW2-1) Switch for air conditioner with or without electric heater

ON : Unit with electric heater
OFF: Unit without electric heater

SW2-2) Switch for air conditioner with or without heat pump

ON : Unit with heat pump
OFF: Unit without heat pump

SW2-3, SW2-4) Switch for function code

3 SW3 (Emergency operation switch)

Normal operation

24

1 2 3 4 5 6 7 8

ON
OFF

1 2 3 4 5

ON
OFF

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

4 5 6

ON
OFF

PL-KJC

3 4 5

ON
OFF

0

7 8

ON
OFF

1

7 8

ON
OFF

2

7 8

ON
OFF

3

7 8

ON
OFF

4 5 6

ON
OFF

4 5 6

ON
OFF

1 2 3

ON
OFF

4 SWA : for ceiling height

3

...

High ceiling

2

...

Standard

3

...

Silent

5 SWB : for number of air outlets

2

...

(Unavailable)

3

...

3 directions

4

...

4 directions

6 SWC : optional filter element

STD

...

Without filter element

OP

...

With filter element

For emergency cooling

1 2 3
ON
OFF

4-directional
3-directional

SWB

SWA

2.4m

2.7m

Silent Standard High ceiling

2.7m

3.0m

3.0m

3.3m

25

10

TROUBLESHOOTING

1. SELF-DIAGNOSTIC FUNCTION

! When trouble occurs during operation, the unit stops and enters the self-diagnostic mode, and displays the trouble

location with the timer lamps on the remote controller. All the other lamps are OFF.

@ To activate the self-diagnostic function for service, press the UP and DOWN buttons simultaneously for more than two

seconds during operation with lamp ON.

# The timer lamps show the latest trouble. Trouble data is memorized until the next trouble occurs, even when the breaker

turns OFF. To clear the memory, press the UP and DOWN buttons simultaneously for more than two seconds during the
test run.

$ All buttons except the POWER ON/OFF button are unavailable during the self-diagnostic mode.
% To release the self-diagnostic mode, press the POWER ON/OFF button.

TEMP.

Unit

Trouble location

Transmission error

in twin control

Cause

● Wrong wiring between No. 1
and No. 2 units

● Poor connector contact

Measures

● Check dipswitch setting

● Check wiring

Outdoor unit

● Wrong wiring between
indoor/outdoor units

● Outdoor unit abnormality
detection

● Malfunction of outdoor coil
thermistor

● Reversed phase detected

● Check wiring

● Check outdoor unit

● Check outdoor coil thermistor

Unit

No.1

Unit

No.2

Room

temperature

thermistor

(RT1)

● Poor connector contact

● Thermistor malfunction

● Check connector

● Check thermistor
➔ No trouble ➔ replace indoor

controller
board.

Unit

No.1

Unit

No.2

Indoor coil

thermistor

(RT2)

● Poor connector contact

● Thermistor malfunction

● Check connector

● Check thermistor
➔ No trouble ➔ replace indoor

controller
board.

Unit

No.1

Unit

No.2

Drain sensor

(DS)

● Poor connector contact

● Thermistor malfunction

● Check connector

● Check thermistor
➔ No trouble ➔ replace indoor

controller
board.

Unit

No.1

Unit

No.2

Drain

overflow

protection

● Drain pump malfunction

● Drain sensor improperly

mounted

● Check drain pump

● Check drain sensor
➔ No trouble ➔ replace indoor

controller
board.

Unit

No.1

Unit

No.2

Coil frost

or overheat

prevention

● Air passage short cycle

● Air filter clogged

● Indoor fan malfunction

● Remove blockage

● Check air filter

● Check indoor fan

12

11

10

9

8

7

6

5

1

2

3

4

(Indicates that the unit is in self-diagnostic mode)

TIMER TEMP.

}

}

}

}

28

27

26

25

24

23

22

18

19

20

21

29

26

Louvers do not work.

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

Unit stops after 5 to

20 seconds operation

Protection function is working.

Power ON/OFF button

does not work.

Indoor/outdoor
connecting wire is
connected incorrectly.
Indoor/outdoor
connecting wire shorts.
Compressor protector is
damaged.
Deicer is broken.

Remote controller is
damaged.
Transmission wire is
poorly connected

Transmission wire is
damaged.
Connector is poorly
connected.

Louvers motor is damaged.
Louvers motor relay is damaged.

Refer to check code on remote controller display.

2. OTHER TROUBLES AND CAUSES

27

4-WAY AIR FLOW SYSTEM

11

1.Placement of the air outlets

●For this grill, the airflow direction comes in 5 patterns.
Also, by setting the dipswitches (SWA and SWB)on the indoor board to the appropriate settings, you can adjust the air flow
and speed. Select the settings that are needed from those in Tables 2 and 3 according to the place where you want to install
the unit.

1) Decide on the pattern of the discharge direction.

4-direction 3-direction

Airflow direction

pattern

Pattern 1 Pattern 4

Factory setting

One air outlet
fully closed

2) According to the number of air outlets and the height of the ceiling to install the unit, be sure to set the dip switches
(SWA, SWB, SWC) on the indoor board to the appropriate setting.

<Initial setting by factory>
SWA : for ceiling height SWB : for number of air outlets SWC : optional filter element

3···High ceiling 2···(Unavailable) STD···Without filter element
2···Standard 3···3 directions OP···With filter element
1···Silent 4···4 directions

<Table 1>

<Table 2>

Silent

4-directional

2.4m

2.7m 3.0m

3-directional 2.7m 3.0m 3.3m

Standard High ceiling

SWB

SWA

Note 1. For the 3-direction airflow, install the air outlet

shutter plate(PAC-SE14SP-E)

Note 2. The 2-direction airflow is unavailable.

2.Installing the outlet shutter plate (PAC-SF38SP-E)

For the 3-direction discharge, close one air outlet fully by installing the air outlet shutter plate before installing the grill.
<Caution> Installing the shutter plate not securely will cause air leak and water dripping.

<How to attach the shutter plate>
Peel off the separation sheet from the shutter plate, and attach the shutter plate to the air outlet of the indoor unit.

Indoor unit

Shutter plate

28

DISASSEMBLY PROCEDURE

12

Be careful on removing heavy parts.

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

1. Removing the air intake grill

(1) Press the button.
(2) Open the intake grill 90°.
(3) Remove the clip.
(4) Slide the shaft in the hinge to the left and remove the

intake grill.

PUSH

3. Removing the fan motor

(1) Remove the turbo-fan nut and radiator aluminum cap.
(2) Pull out the turbo fan.
(3) Disconnect the connector of the fan motor lead wire.
(4) Remove the 3nuts of fan motor.

3. Removing the electrical parts box

(1) Disconnect the lead wire of the vane motor from the clamp,

and disconnect the red connector (8P).
(2) Remove 2 of 4 screws from the electorical parts cover.
(3) Remove the electorical parts cover.
(4) Disconnect the following connectors from the box.

Red (3P) for the fan motor
White (2P) for the indoor coil trermistor
Blue (2P) for the drain pump
White (4P) for the drain sensor

(5) Disconnect the green anti-falling wire of the electrical parts

box.
(6) Remove 3 of 4 screws from the electrical parts box, and

loosen the other screw.
(7) Pull out the electrical parts box.

Electrical parts inside the box

Terminal block
Transfomer
Indoor fan capacitor
Room temperature thermistor
Indoor controller board

Figure 1

Photo 3

nut

Fan motorConnector

Photo 1

Photo 2

Screws

Connector

Fan guard

Fan guard screw

Terminal block

Transformer

Connector

Capacitor

Nut

Readiator alumium
cap

Anti-failing
wire

Room
temparature
thermistor

Electrical box

Indoor
controller
board

PUSH button

Shaft

Intake grill

29

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

4. Removing the room temperature thermistor

(1) Remove the electrical box cover
(2) Remove the holder and the room temperature thermistor

by pulling the catch.

(3) Disconnect the red connector,CN20,on the indoor

controller board.

5. Removing the indoor coil thermistor

(1) Remove the electrical box cover.
(2) Remove the electrical box.
(3) Remove the turbo fan.
(4) Remove the screw of the service panel.
(5) Remove the service panel.
(6) Remove the indoor coil thermistor from the holder

attached to the copper pipe.

(7) Disconnect the 2-pin white connector.

6. Removing the panel

(1) Open the intake grill.
(2) Disconnect the connector of the vane motor.
(3) Remove 4 screws of the panel.
(4) Pulling the temporary handing hook, remove the panel.

7. Removing the drain pan

(1) Remove the panel.
(2) Remove the rubber bushing.
(3) Drain the remaining water in the drain pan.
(4) Remove the electrical box cover.
(5) Remove the electrical box.
(6) Refmove the screw of the V.A. cover, and remove the V.A.

cover.

(7) Remove each screw of the corner supports 1,2, and 3,

and remove the corner supports 1,2 and 3.

(8) Pull out the drain pan.

wPull the left and right of the pan gradually.

Be careful not to crack or damage the pan.

Photo 7

Photo 6

Photo 5

Photo 4

Indoor controller board

Room
temparature
thermistor

Mounting hole

Indoor coil thermistor

Screws

Screws

Panel

Temporary hanging hook

Temporary
hanging hook

Screws

Coner cover
screws

Coner cover

Screws

Screws

Drain
pan

30

OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS

8. Removing the drain pump and drain sensor

(1) Remove the panel.
(2) Remove the electrical parts cover.
(3) Remove the electrical parts box.
(4) Remove the drain pan.
(5) Remove 4 screws of the drain pump.
(6) Pulling the clip of the drain hose, pull out the drain hose

from the drain pump.
(7) Remove the drain senser and the holder.
(8) Pull out the drain pump.

9. Removing the heat exchanger

(1) Remove the panel.
(2) Remove the electrical parts cover.
(3) Remove the electrical parts box.
(4) Remove the drain pan.
(5) Remove the turbo fan.
(6) Remove the screw of the coil support A.
(7) Remove the 2 screws of the coil support B.
(6) Remove the 2 screws of the coil.
(8) Remove 4 screws of the piping cover of the outer wall,

and pull out the piping cover.

Photo 9

Photo 10

Photo 11

Screws

Drain senser
holder

Drain
pump

Clip

Drain
hose

Screw of the coil
support A

Heat
exchanger

Coil set screws

Coil
support
A

Screw

Piping cover

Screw

31

PARTS LIST13

No.

Parts No. Parts Name Specifications

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

Unit

Amount

Q'ty / set

PL-1.6/2/2.5

KJC

Price

1
2
3
4
5
6
7

AIR OUTLET GRILLE
AIR FILTER
INTAKE GRILLE
HINGE
GRILLE HANGER
REMOTE CONTROLLER
REMOTE CONTROLLER CABLE

1
1
1
2
1
1
1

(BG88H096H01)

R.B

12m

Remarks

(Drawing No.)

T7W 560 003
R01 29H 500
R01 29H 691
R01 29H 061

–
T7W 20K 200
T7W 139 305

PANEL PARTS
PL-1.6KJC
PL-2KJC
PL-2.5KJC

7

32

FUNCTIONAL PARTS
PL-1.6KJC
PL-2KJC
PL-2.5KJC

33

No.

Parts No. Parts Name Specifications

PL-1.6/2/2.5

KJC

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

Unit

Amount

Q'ty / set Price

Part numbers that are circled not shown in the figure.

1
2
3
4
5
6
7
8

9
10
11
12
13
14

15

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

33

34

BASE
LEG
LEG
LEG
LEG
INDOOR FAN MOTOR
MOTOR MOUNT
INNER COVER
TURBO FAN
INDOOR COIL THERMISTOR
DRAIN SOCKET
DRAIN PUMP
DRAIN SENSOR
DRAIN HOSE
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
DRAIN PAN
CORNER COVER
COVER (DRAM)
TERMINAL BLOCK
TERMINAL BLOCK
INDOOR FAN CAPACITOR
CONTROLLER CASE
INDOOR CONTROLLER BOARD
FUSE
TRANSFORMER

ROOM TEMPERATURE
THERMISTOR

BELL MOUTH
ELECTRICAL PARTS COVER
SPL WASHER
DRAIN PLUG
FAN GUARD
SENSOR HOLDER
CORE
CORE
CABEL FOR BOARD

1
1
1
1
1
1
3
1
1
1
1
1
1
1

1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1

1
1
1
1
1
1
3
1
1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1

1
1
1
1
1
1
3
1
1
1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1

(BG02Y348G06)
(BG00T672G08)
(BG00T672G09)
(BG00T672G10)
(BG00T673G02)

(BG00T718G05)

(BG00T713G05)
(BG00T712G06)

(BG25J542H04)

(BG00L601G22)
(BG00A662G18)

MF1

RT2

DP
DS

TB2
TB4

C1

I.B

F(I.B)

T

RT1

3P(L,N,;)
2P(1,2)

2.5+ 400V

250V 6.3A

Remarks

(Drawing No.)

–
–
–
–

–
T7W E00 762
R01 29H 105

–
R01 41N 114
R01 08K 202
R01 41N 523
T7W E00 355
R01 W28 266
R01 W28 527
T7W E03 480
T7W E04 480
T7W E05 480
T7W E00 529

–

–
T7W 521 716
T7W 512 716
R01 29H 255

–
T7W 27K 310
T7W 520 239
T7W 11K 799
R01 13A 202

–

–
R01 08K 097
R01 A48 524
T7W 29H 675
R01 71N 241
T7W E00 249
T7W E01 249
T7W 022 304

34

PANEL PARTS
PL-1.6KJC
PL-2KJC
PL-2.5KJC

No.

Parts No. Parts Name Specifications

1

R01 29H 002

2

R01 29H 085

3

R01 29H 223

4

R01 29H 063

5

T7W 33K 063

6

R01 29H 056

7

R01 29H 047

8

T7W 560 258

9

R01 29H 040

10

R01 29H 041

AUTO VANE
AIR GUIDE
VANE MOTOR
SPRING JOINT 1
SPRING JOINT
PUSH BUTTON
VANE SUPPORT
CORD HEATER
GRILLE GEAR(RIGHT)
GRILLE GEAR(LEFT)

Q'ty / set

PL-1.6/2/2.5

KJC

4
1
1
1
1
1
8
1
1
1

Remarks

<3/SET>

Wiring

Diagram

Symbol

MV

H240V 28.2W

Recom­mended

Q'ty

Unit

Price

Amount

35

14

OPTIONAL PARTS

Note 1. How to connect refrigerant pipes.

Factory supplied optional refrigerant piping contains refrigerant at the above atmospheric pressure. As long as
connection takes no more than 5 minutes, no air will enter, and there will be no need for air purging.
Remove the blind caps and make the connections within 5 minutes. After the connections for the indoor and outdoor
units are made, open the stop valve on the outdoor unit to allow refrigerant gas to flow.
If piping length exceeds 5m, an additional charge of refrigerant is needed.

Note 2. The following main parts are cntained in the optional refrigerant piping kit.

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

1. REFRIGERANT PIPES

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

2. REMOTE CONTROLLER EXTENSION CABLE

When installing the remote controller at a distance from the air conditioner, use the designated extension cable with
connector.

3. TIMER

3-1 Specifications

(The PAC-815PT with the PAC - 825AD.)

Part No.
Pipe length
Pipe size O.D.
Connection method

PAC-05FFS-E

5m

Liquid:ø9.52

Indoor unit:Flared

Gas:ø15.88
Outdoor unit:Flared

PAC-07FFS-E

7m

PAC-10FFS-E

10m

PAC-15FFS-E

15m

Part No.

length

PAC-905EC

12m

PAC-906EC

20m

PAC-918EC

30m

PAC-919EC

50m

Part No.

Model Name

PAC-SK65PT

Program timer

Product name
Model name
Mounting method
Clock system
Clock accuracy

Display

Program cycle
Timer setting unit
Numbers of setting points
Minimum ON/OFF interval
Power failure safeguard
Rated power supply
Setback function

Program timer
PAC-SK65PT
Wall mounting
Quartz clock

±50 seconds/month
Time Liquid crystal display
Week Liquid crystal display
Timers setting Liquid crystal display

24 hours

30 minutes

48 /Day

–

–

5V DC

Provided

36

3-3. 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 6-wire cable as shown in the figure below

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

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

3-2 Feature of program timer

(1) Daily timer function

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

(2) Setback operation.

Set back operation is useful for reducing running costs
Example : At a hotel with a 24-hour system

8:00~23:00 Cooling operation with set temperature at 26°C

23:00~8:00 Setback operation with 2 degrees of setback
As shown in the chart on the right, the set temperature rises 2 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.

28˚C

26

˚C

8:00

Normal

operation

23:00

Setback

operation

8:00

Normal

operation

MITSUBISHI ELECTRIC

SET MONITOR

BACK

ON OFF

ON OFF

AHEAD

BACK

AHEAD

Mode selector button : Use this button to select "MONITOR" or

"SET" mode.

"MONITOR" : Indicates the current timer setting. All buttons except

SET/MONITOR will not work in this mode. This is the

normal status.

"SET" : Set to "SET" mode for clock adjustment, change of day, daily

and weekly timer setting.

Clock adjustment button : Used to adjust the current time. Press AHEAD

button to advance the time. Each time the button is
pressed the time advances by 1 minute, and
pressing continuously advances 1 minute at a 0. 5
second interval. When the lower digit of the minutes
becomes 0, the indication advances in 10 minute
units. BACK button is used for reversing the time.
Each time the button is pressed the time reverses by
1 minute, and pressing continuously reverses the
time by 1 minute at a 0. 5 second interval. When the
lower digit of the minute becomes 0, the indication
reverses in 10 minutes units.

Weekday setting button : Used to set the day of the week.

Pressing button changes the day.
light displays in the order of S M T W.

Weekly timer button : Used to set the weekly timer.
Set back button : Used to set the set back amount. Set back can be set in the range of 1

to 9°C in 1°C unit.

Daily timer button : Used to set the daily timer in 30 minute units.

▼

Mode display

Current time

display

Weekly timer

display

Daily timer display

NOTE : display above is

only an example.

Current day
display

3-4. Names and functions
<PAC-SK65PT>

2-wire cable

Remote

controller

Connector CN1 Connector CN1

To indoor unit

Program

timer

5-wire cable

37

4. CENTRALIZED REMOTE CONTROLLER

Allows individual or combined control of up to 16 units.

Part No. PAC-805RC

4-1. Dimensions

4-2. Names and Functions

"ENGAGED" indicator
When this indicator is lit, transmission is in
progress and all switches are inoperative.

DUAL/CENTRAL switch
This change-over switch governs the

operation of the accessory remote
controller.

"DUAL"
Instructions from both the accessory
remote controller and the centralized
remote controller are valid. (Priority is
given to the last instruction received.)

"CENTRAL"
ON/OFF switching by the accessory
remote controller is invalidated. Operation
is controlled by the centralized remote
controller only.
Initial setting is "DUAL".

LCD Matrix Display
This display indicates the operational
status of all connected units either by
steady lighting or by flashing.

POWER ON/OFF switch
Operation ON/OFF switch.

▲BACK ▼AHEAD buttons
These buttons are used to designate
the attached unit(s). (They designate
the unit to be centrally controlled.)

●When group “00” is designated;
collective ON/OFF instruction is sent to
all units.

●When group “01”-“16“ is designated;
ON/OFF instruction is sent only to the
designated units.

ACTIVE/BYPASS switch
This change-over switch for the
program timer.
Use “ACTIVE” when a program timer is
connected.
Use “BYPASS” when a program timer
is not connected.

Independent “DUAL / CENTRAL” and “ACTIVE / BYPASS” setting of all the groups is possible. When power supply to the
centralized remote controller is cut, due to a power failure, for example all settings return to original “DUAL” and “BYPASS”.

Unit : mm

12

113

23.5

56.3

11

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

117

POWER
ON/OFF

AHEAD

BACK

ACTIVE
BYPASS

DUAL

CENTRAL

MITSUBISHI ELECTRIC

117

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

GROUP

BACK

SELECTION

PROGRAM

ACTIVE

TIMER

BYPASS

DUAL

CONTROLLER

CENTRAL

OPERATION

10 9 8 7 6 5 4 3 2 1

POWER
ON/OFF

AHEAD

BACK

ACTIVE
BYPASS

DUAL

CENTRAL

MITSUBISHI ELECTRIC

POWER
ON/OFF

AHEAD

8

113

38

TERMINAL-BLOCK
FOR TRANSMISSION

TERMINAL-BLOCK
OF POWER SUPPLY

Tie-lap

TRANSFORMER

Fuse(5A)

Tle-lap

ANE

Transmission

(W) (BN) (R) (O) (Y)

T

200

220

230

240

5A

A

N

E

POWER
SUPPLY

Wiring has to be change when
a 200,230 or 240 power is used.

BACK

ACTIVE
BYPASS

POWER
ON/OFF

DUAL

CENTRAL

AHEAD

ENGAGED

GROUP

ACTIVE BYPASS

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

DUAL CENTRAL

12345678910

10 9 8 7 6 5 4 3 2 1

To adaptor's
terminal-block

Centralized remote
controller

Non-polar,
two-wire cable

To adaptor's
terminal-block

Power supply board box

BACK

ACTIVE

BYPASS

POWER
ON/OFF

DUAL

CENTRAL

AHEAD

ENGAGED

GROUP

ACTIVE BYPASS

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

DUAL CENTRAL

12345678910

10 9 8 7 6 5 4 3 2 1

Dip switch
SW17

Centralized
remote controller

Power supply
board

4-3 Connection method

(1) Connections in the power supply cord.

1. Connect the power supply cord to the power supply terminal-block and fix it in-place with a tie-lap.
Connect a single phase 200V AC (220, 230, 240V) to .

As is the GND terminal, be sure to ground the earth wire.

2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-lap.
Use a 1.6 (AWG 14) or above two-wire cable for the transmission line.
CAUTION : Never connect the power supply cord to the transmission terminal-block.

(2) Connection method of centralized remote controller and power supply board.

1. Connect the centralized remote controller and power supply board with a non-polar, two-wire cable.

2. Wiring diagram 3. Set the max. address number with the dipswitch SW17

of the centralized remote controller.

A N

E

39

5. PROGRAM TIMER ADAPTER

This adapter is needed when a program timer(PAC-815PT)or the centralized remote controller(PAC-805RC)is used.

5-2 Connection method

Connection and wiring methods differ with the type of the indoor unit used. Confirm the type before carrying out the work.

5-1 Parts included

Part No. PAC-825AD

➀ ADAPTER·························1P ➁ 3-core cable ··························1P

➃ 4-core cable ··························1P

➂ 3-core cable ··························1P

➄ 5-core cable ··························1P

(1) Connections in the adapter Box

1. Connect the power supply cord to the terminal-block and fix it in-place with a tie-lap.

Connect a single phase 200V (220, 230, 240V) AC to .
As is the GND terminal, be sure to ground the earth wire.

2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-lap, when a

centralized remote controller is being used.
CAUTION : Never connect the power supply cord to the transmission terminal-block

E

A N

Length : 2m (6' 7") Length : 2m (6' 7")

Length : 2m (6' 7") Length : 2m (6' 7")

Wiring has to be changed when 200V power supply is used.

fig.1fig

TERMINAL BLOCK
FOR
TRANSMISSION

CN22

Dip switch

SW1

2

.

CN22

TRANS

SW1

Tie-lap

Transmission cord

TRANS CN1 CN21 CN51 CN30 CN42 CN50 CN40

(AG)

ANE

Fuse(5A)

TRANSFORMER

200

220

-240

T

5A

A
N
E

TERMINAL BLOCK
FOR POWER
SUPPLY

Transmission

Tie-lap

(W) (B) (Y)

POWER SUPPLY CORD

POWER
SUPLLY

40

2. Set the address number (from SW1-1 to SW1-6) in
the dipswitch when a centralized remote controller is
being used.
The address is the control number of each unit in the
centralized control system.
As the address serves as a time-delay device as
well, sequential starts (all units are triggered
collectively by one single ON instruction)must be set
with different address numbers (greater than 0) for
each adapter.

6. TIMER ADAPTER

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

Adaptor

200~240V AC

3-core cable 5-core cable

52

To program timer or
centralized remote
controller

Fig.3

CN30 CN50

CN51CN2

Remote controller Indoor unit

Max. length of each cable is 10m.

65

230

22

15 15

86 70

35

27

15

hole

40 80 40 27

18

Fixing screw hole
4- 5.5

95

220

22

35

120

12

30

200

2 2 2.9

74
7

8

Fig. 4

ON

SW1

Levers No. 1-6 can set the following addresses respectively
with binary notations.

Address

Toggle

32

No.6 ON16No.5 ON8No.4 ON4No.3 ON2No.2 ON1No.1 ON

10

987654321

ON

10

987654321

ON

10

987654321

ON

10

987654321

(Ex.1) 3 = 2 + 1 (Ex.2) 9 = 8 + 1 (Ex.3) 15 = 8 + 4 + 2 + 1

Part No. PAC-SA89TA-E

@ Connection from adaptor 4. Dimensions

ORN 1

2
3

BRN
RED

41

7. REMOTE INDICATION ADAPTER

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

Part No. PAC-559AD

BRN

RED

<Wiring>

CN51

connector (5P)

BRN
RED

ORN
YLW

GRN

JST
XHP-3

5

1

Optional multiple display
adapter

The maximum distance between
indoor board and relay is 10m.

GREEN
YELLOW

ORANGE

RED

BROWN

X1

X2

Electrical insulation is needed.

Wiring at the actual place

ORN

YLW

5

5

2

X1

X2

GRN

RL

GL

Power
supply

42

Part No. PAC-SE01AS-E

Applied Model PL-1.6KJC / PL-2KJC / PL-2.5KJC

8. SPACE PANEL

Part No. PAC-SE06WP-E

Applied Model PL-1.6KJC / PL-2KJC / PL-2.5KJC

9. WIDE PANEL

Part No. PAC-SF38SP-E

Applied Model PL-1.6KJC / PL-2KJC / PL-2.5KJC

10. AIR OUTLET SHUTTER PLATE

750

Hole

16

R7.8

R26

750

R

26

R7.8

965

Hole

965

R25

R37

R

6

R31

R25

R37

R

6

R31

R18047.5

R18102.5

440

122 99

65

42

13

43

Part No. PAC-SE21TM-E

Applied Model PL-1.6KJC / PL-2KJC / PL-2.5KJC

11. MULTI-FUNCTIONAL CASEMENT

Part No. PAC-SE13KF-E

Applied Model PL-1.6KJC / PL-2KJC / PL-2.5KJC

12. HIGH-EFICIENCY FILTER ELEMENT

Casement

1pc

Screw with

washer

Duct flange

Tapping

screw

Hook Band

4pcs

M5x0.8x15

1pc

6pcs
4x10

2pcs 1pc

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO

CCopyright 1997 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Issued in Jun. 1997. No. OC125 840

New publication, effective Jun. 1997.
Specifications subject to change without notice.