Mitsubishi PK-1.6GKL, PK-2GKL Service Manual

SPLIT-TYPE, AIR CONDITIONERS

ON/OFF

TECHNICAL & SERVICE MANUAL

2000

No.OC230

Series PK

Indoor unit
[Model names]

PK-1.6GKL

PK-2GKL

Wall Mounted

[Service Ref.]

PK-1.6GKL
PK-2GKL

Indoor unit

This manual does not cover
the following outdoor units.
When servicing them, please
refer to the service manual
No.OC127 Revised Edition-A
and this manual in a set.
[Service Ref.]

PU-1.6VLJA2
PU-2VJA2

CONTENTS

1. PART NAMES AND FUNCTIONS ·······················2

2. SPECIFICATIONS················································4

3. DATA·····································································6

4. OUTLINES AND DIMENSIONS·························10

5. WIRING DIAGRAM ············································11

6.

REFRIGERANT SYSTEM DIAGRAM

7.

OPERATION FLOW-CHART

8.

MICROPROCESSOR CONTROL

9.

TROUBLESHOOTING

10. SYSTEM CONTROL ··········································35

11. DISASSEMBLY PROCEDURE ···························40

12. PARTS LIST ·······················································44

13. OPTIONAL PARTS·············································46

··································13

···········································29

······················12

···························16

Remote controller

1 PART NAMES AND FUNCTIONS

● Indoor Unit

Air intake

Guide vane

Filter

Air outlet

Air intake grille

Auto vane

2

●Wireless remote controller

● When cover is open.

display

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

display

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

• FUNCTION

Lights up when function are set..

display

• TEST RUN • CHECK display

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

display

Displays when batteries are dead.

display

The vertical direction of airflow is indicated.

display

FAN SPEED display indicates which fan

speed has been selected.

ADDRESS display

Displays the refrigerant address.

UNIT NO. display

Displays the number of unit..

FUNCTION NO. display

Displays the mode.

SELECTION NO. display

Displays the selection number..

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

FUNCTION
TEST RUN

CHECK

ON/OFF

MODE FAN

RESET

VANE

AM
PM

AM
PM

TEMP.

˚C

START

STOP

HR.

MIN.

display

SET TEMP. display indicates desired tempera­ture set.

CLOCK display

DIsplays the current time.

“ ”display

Flashes when the current time is displayed.

TIMER display

Displays when in timer operation or when set­ting timer.

➡

“ ” “ ” display

➡

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

▼

“ ” “ ” display

Displays when the current time and the timer

time can be changed.

▼

TEMP. button

display

The unit is turned ON and OFF alternately

each time the button is pressed.

● When cover is open.

MODE SELECT button

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

FAN SPEED SELECT button

Used to change the fan speed.

VANE CONTROL button

Used to change the airflow direction.

ON/OFF

MODE FAN

RESET

VANE

TEMP.

START

STOP

HR.

MIN.

SET TEMPERATURE button sets any desired

room temperature.

TIMER CONTROL buttons

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

HR. and MIN.buttons

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

button

RESET button

3

2

Guaranteed operating range

Upper limit
Lower limit

Indoor
D.B. 35˚C, W.B. 22.5˚C
D.B. 21˚C, W.B. 15.5˚C

Outdoor

D.B. 52˚C (46˚C)

D.B. 21˚C

Cooling

Item

Service Ref.

PK-1.6GKL PK-2GKL

PK-2GKL

PU-2VJA

2

Single, 50Hz, 220/240V

2.44 / 2.48

11.3 / 10.8(98/96)
48 / 52

Munsell 5Y 7/1

Capillary tube

Hermetic

Inner thermostat, HP/LP switch

Line start

Plate fin coil

Propeller (direct) o 1

0.065

45 (1588)

—

870 (34-1/4)
295 (11-5/8)
650 (25-5/8)

60 (132)

9.52 (3/8)

15.88 (5/8)
Flared
Flared

w3 Max. 20m
w3 Max. 30m

49

32 / 38

R-22 1.78 (3.9)

NHJ41VMD

2.0

Single, 50Hz, 220/240V

0.07

0.33(96/88)

0.4

Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) o 1

0.030

9-12 (318-424)

0 (direct blow)

—

Wireless remote controller & Built-in

36 - 43

20 (13/16)

990 (39)

235 (9-1/4)

340 (13-3/8)

16 (35)

27/19.0°C, 35/24°C

Cooling (JIS B8616,GB4706.32-96)

19,100

5,600

2.51/2.55

27/19.0°C, 35/24°C

Cooling (JIS B8616,GB4706.32-96)

13,300

3,900

1.49/1.59

PK-1.6GKL

Single, 50Hz, 220/240V

0.07

0.33(96/88)

0.4

Munsell 0.70Y 8.59/0.97

Plate fin coil

Line flow (direct) o 1

0.030

9-12 (318-424)

0 (direct blow)

—

Wireless remote controller & Built-in

36 - 43

20 (13/16)

990 (39)

235 (9-1/4)

340 (13-3/8)

16 (35)

PU-1.6VLJA

2

Single, 50Hz, 220/240V

1.42 / 1.52

6.7 / 6.9 (97/92)
30 /33

Munsell 5Y 7/1

Capillary tube

Hermetic

RH247VFC

1.2

Line start

Plate fin coil

Propeller (direct ) o 1

0.065

45 (1588)

—

49
870 (34-1/4)
295 (11-5/8)
650 (25-5/8)

45 (99)

—

R-22 1.3 (2.9)

9.52 (3/8)

15.88 (5/8)
Flared
Flared

w3 Max. 15m
w3 Max. 20m

Condition
Capacity w1
Total input w1

Service Ref.
Power supply(phase, cycle,voltage)

Input

Running current (Power factor)

Starting current
External finish
Heat exchanger

Fan(drive) o No.

Fan motor output

Airflow (Low-High)

External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-High) w2
Cond. drain conn. I.D.

Dimensions

Weight
Service Ref.
Power supply (phase, cycle, voltage)

Input

Running current /Power factor

Starting current
External finish
Refrigerant control
Compressor

Model

Motor output

Starter type

Protection devices
Heat exchanger

Fan(drive) o No.

Fan motor output

Airflow
Defrost method
Noise level w2

Dimensions

Weight
Crankcase heater
Refrigerant Charge

Pipe size O.D.

Connection method
Between the indoor &

outdoor units

Btu/h

W

kW

kW

A (%)

A

kW

m

3

/min (CFM)

Pa (mmAq)

kW

dB
mm (in.)
mm (in.)
mm (in.)
mm (in.)

kg (lbs)

kW

A (%)

A

kW

kW

m

3

/min(CFM)

dB
mm (in.)
mm (in.)
mm (in.)

kg (lbs)

W

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

Indoor, Outdoor D.B. / W.B.°C

Liquid

Gas

W

D
H

W

D
H

REFRIGERANT PIPING

OUTDOOR UNIT

Indoor side
Outdoor side
Height difference
Piping length

INDOOR UNIT

Fan

Fan

( ) : PU-1.6VLJA2

SPECIFICATIONS

1. STANDARD SPECIFICATION

w1 Refrigerant piping length (one way) : 5m (16ft)
w2 Noise level is measured in an unacoustic room based on JIS Z8731 conditions.
w3 Up to 20m it is unnecessary to charge additional refrigerant.

4

2. POWER SUPPLY & MODEL NAMES

Power supply Service Ref.(Indoor unit)

Service Ref.(Outdoor unit)

50Hz

1ph.
3ph.

PK-1.6GKL

PU-1.6VLJA

2

—

PK-2GKL

PU-2VJA

2

—

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

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

Power supply (1 Phase)

Service Ref.

Current
Input
Starting courrent
Outdoor unit

A

KW

A

A

KW

A

PK-1.6GKL

0.33

0.07

0.4

PU-1.6

PK-2GKL

0.33

0.07

0.4

PU-2

PK-1.6GKL

0.33

0.07

0.4

PU-1.6

PK-2GKL

0.33

0.07

0.4

PU-2

V : 240V 50Hz

Power supply (1 Phase)

Service Ref.

Current
Input
Starting courrent
Outdoor unit

PK-1.6GKL

0.33

0.07

0.4

PU-1.6

PK-2GKL

0.33

0.07

0.4

PU-2

Notes : 1. Power supply key V(L) …1ph, 220, 230 240V, 50Hz

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

3. ELECTRICAL SPECIFICATION

(1) Rating conditions

Series PK Indoor Unit (Single Phase)

JIS B8616,GB4706.32-96

Indoor : D.B. 27°C (80°F), W.B. 19°C(66°F)
Outdoor : D.B. 35°C (95°F)

5

3 DATA

Service Ref. PK-2GKLPK-1.6GKL PK-2GKLPK-1.6GKL

Temperature T.C.
Outdoor D.B.

21˚C
(69.8˚F)

Indoor W.B.

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.9

4.2

4.3

4.4

4.4

4.7

C.F.

(T.I.)

0.81

0.82

0.83

0.83

0.84

0.86

0.81

0.82

0.83

0.83

0.84

0.86

0.84

0.85

0.86

0.86

0.87

0.89

0.90

0.92

0.93

0.93

0.94

0.96

0.93

0.95

0.96

0.97

0.97

0.99

0.96

0.99

1.00

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.08

1.11

25˚C
(77˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.8

4.1

4.2

4.3

4.3

4.6

0.84

0.85

0.86

0.86

0.87

0.89

30˚C
(86˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.7

3.9

4.1

4.1

4.2

4.5

0.90

0.92

0.93

0.93

0.94

0.96

32.2˚C
(90˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.6

3.9

4.0

4.0

4.1

4.4

0.93

0.95

0.96

0.97

0.97

0.99

35˚C
(95˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.5

3.8

3.9

4.0

4.0

4.3

0.96

0.99

1.00

1.00

1.01

1.04

40˚C
(104˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.4

3.6

3.7

3.8

3.9

4.1

1.03

1.06

1.07

1.08

1.08

1.11

T.C.

5.6

6.0

6.2

6.2

6.4

6.7

C.F.

(T.I.)

5.5

5.9

6.0

6.1

6.2

6.6

5.3

5.6

5.8

5.9

6.0

6.4

5.2

5.5

5.7

5.8

5.9

6.3

5.1

5.4

5.6

5.7

5.8

6.2

4.9

5.2

5.4

5.4

5.5

5.9

Service Ref.

Temperature

T.C.

Outdoor D.B.

Indoor W.B.

C.F.

(T.I.)

40.6˚C
(105˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.4

3.6

3.7

3.8

3.8

4.1

1.04

1.06

1.08

1.08

1.09

1.12

1.04

1.06

1.08

1.08

1.09

1.12

1.10

1.12

1.14

1.15

1.16

1.20

1.11

1.14

1.15

1.16

1.17

1.21

1.16

1.19

1.21

1.22

1.23

1.28

1.19

1.22

1.24

1.25

1.26

1.31

45˚C
(113˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.2

3.4

3.6

3.6

3.7

3.9

1.10

1.12

1.14

1.15

1.16

1.20

46˚C
(115˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

3.2

3.4

3.5

3.6

3.6

3.9

1.11

1.14

1.15

1.16

1.17

1.21

50˚F
(122˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

52˚C
(125.5˚F)

16˚C
18˚C
19˚C

19.4˚C
20˚C
22˚C

(60.8˚F)
(64.4˚F)
(66.2˚F)

(67˚F)
(68˚F)

(71.6˚F)

T.C.

C.F.

(T.I.)

4.8

5.2

5.3

5.4

5.5

5.9

4.6

4.9

5.1

5.2

5.3

5.7

4.6

4.9

5.1

5.1

5.2

5.6

4.4

4.7

4.9

4.9

5.0

5.4

4.3

4.6

4.7

4.8

4.9

5.3

Evaporator airflow (CMM)

12

0.10

0.80

0.12

0.69

Bypass factors

S.H.F. at rating conditions

12

Service Ref.

Refrigerant piping length (one way)

PK-1.6GKL
PK-2GKL

40m (131ft)

—
—

35m (115ft)

—
—

30m (98ft)

—

0.944

25m (82ft)

—

0.954

20m (66ft)

0.982

0.964

15m (49ft)

0.987

0.975

10m (33ft)

0.992

0.985

5m (16ft)

1.0

1.0

1. PERFORMANCE DATA

Cooling capacity 50Hz

PK-1.6GKL, PK-2GKL

Notes: 1. T.C. : Total capacity (kW) …(kcal/h)=(kW)x860, (Btu/h)=4x(kW)x860

COOLING CAPACITY correction factors

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

2. (°F)=32+9/5(°C)

3. Guaranteed operating range(cooling)

Lower limit … Indoor : D.B. 21°C(70°F) , W.B. 15.5°C(60°F)

Upper limit … Indoor : D.B. 35°C(95°F) , W.B. 22.5°C(72.5°F)

Outdoor : D.B. 21°C(70°F)

Outdoor : D.B. 46°C(115°F) W Outdoor : D.B. 52°C(125.5°F)…VJ,YJ

50Hz

6

2. ELECTRICAL DATA

Input (kW)
Current (A)
Starting current (A)
Input (kW)
Current (A)
Starting current (A)

Capacity (W)
Total Input (kW)

IndoorOutdoor

Service Ref.

Indoor unit

Outdoor unit

3,900

1.49

0.07

0.33

0.40

1.42

6.7
30

5,600

2.51

0.07

0.33

0.40

2.44

11.3
48

PK-1.6GKL

PU-1.6VLJA

2

PK-2GKL

PU-2VJA

2

3,900

1.54

0.07

0.33

0.40

1.47

6.7
32

5,600

2.53

0.07

0.33

0.40

2.45

11.0
50

PK-1.6GKL

PU-1.6VLJA

2

PK-2GKL

PU-2VJA

2

3,900

1.59

0.07

0.33

0.40

1.52

6.9
33

5,600

2.55

0.07

0.33

0.40

2.48

10.8
52

PK-1.6GKL

PU-1.6VLJA

2

PK-2GKL

PU-2VJA

2

Air flow m3/

min

Air speed m/

sec

Coverage range m (ft)

PK-1.6GKL PK-2GKL

12

5.3

10(32.8)

12

5.3

10(32.8)

2-1 Rating conditions (JISB 8616,GB4706.32-96)

Indoor : D.B. 27°C, W.B. 19°C
Outdoor : D.B. 35°C, W.B. 24°C
Indoor unit …220V / 230V / 240V 50Hz 1phase
Outdoor unit…220V / 230V / 240V 50Hz 1phase

3. OUTLET AIR SPEED AND COVERAGE RANGE

The air coverage range is the value up to the position where the air speed is 0.25m/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 the furni­ture inside the room.

7

4. STANDARD OPERATION DATA

Service Ref.

Mode
Capacity W
Input

kW

Indoor unit Service Ref.

Phase, Hz
Volts
Amperes

Outdoor unit Service Ref.

Phase, Hz
Volts
Amperes
Discharge pressure
Suction pressure
Discharge temperature
Condensing temperature

MPa

(

kg/cm

MPa

(

kg/cm

˚C
˚C

PK-1.6GKL

Cooling

3,900

1.49

PK-1.6GKL

1, 50
V
A

220

0.33

PU-1.6VLJA

2

1, 50
V
A

2

)

2

)

220

6.7

2.0

(20.6)

0.52

(5.3)

70
52

PK-2GKL

Cooling

5,600

2.51

PK-2GKL

1, 50

220

0.33

PU-2VJA

1, 50

220

11.3

2.0

(20.4)

0.44
(4.5)

72
52

2

Suction temperature
Ref. pipe length

Intake air
temperature

Discharge air

Indoor side Refrigerant circuit Electrical circuit Total

temperature

Intake air
temperature

side

Outdoor

˚C

m

˚CD.B.
˚CW.B.
˚CD.B.
˚CD.B.
˚CW.B.

SHF

BF

7

5
27
19

14.2
35
24

0.80

0.10

3

5
27
19

11.6
35
24

0.69

0.12

The unit of pressure has been changed to Mpa on the international system of unit (SI unit system).
The converted score against the traditional unit system can be gotten according to the formula below.

1(Mpa) = 10.2(kg/FF)

8

5. NOISE CRITERION CURVES

UNIT

WALL

1m

1m

MICROPHONE

Ambient temperature 27:

Test conditions are based on JIS Z8731

PK-1.6GKL
PK-2GKL

90

80

70

60

50

40

30

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

20

10

APPROXIMATE
THRESHOLD OF
REARING FOR
CONTINUOUS
NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NOTCH

Hi

Lo

SPL(dB)36LINE

43

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

9

4

BYOFF

ON STAND

HEATCOOL

OFF BY

ON STAND

COOL HEAT

ÅrÇoÇoÅqÅ@ëOñÅ@ÇeÇqÇnÇmÇs ÅrÇoÇoÅqÅ@ëOñÅ@ÇeÇqÇnÇmÇs

r.SLI

m m

MITSUBISHI ELECTRICMITSUBISHI ELECTRIC

r.SLI

m m

MITSUBISHI ELECTRICMITSUBISHI ELECTRIC

21

Right side

Less than 15

70

245

60

235

Auto vane

Front view

Air intake

Air intake

Air intake

Air intake
198

53

340

715 225

340 80 280 233

990

21

Left side

Knock out hole
for left piping
Refrigerant pipe.
Drain pipe.
Wiring hole.

Knock out hole
for right piping
Refrigerant pipe.
Drain pipe.
Wiring hole.

60

70

245

(Necessary clearance for
Unit installation)

Right side

Allowing clearances
Front view

Less than 130

50 or more 150 or more

180 or more 30 or more

for bolts

Left-rear
piping hole

left-rear piping

R52.5

R52.5

Installation plate
balance point hole

Details of installation plate

49-[5hole
for tapping screw

Knock out hole for
right-rear piping

Right-rear
piping hole

Unit center

14-[14hole

Knock out hole for

425

420

170

190

210

230

0

322 w2

0
35

55
80

130
190

230
272
310

0

3595150

205

260

320

345

495

20

75

135

190

245

300

360

405

495

32

0

w1 Sleeves are available on the market.
w2 This size shows the lower end of through hole.

[90~[100[90

Through hole

Sleeve w1

1.6 . 2

Model

R52.5

R52.5

Gas pipe

Liquid pipe

Terminal block for

Terminal block to
outdoor unit

Filter grip

Service panel
(Power supply access)

5/8F

Gas pipe

Liquid pipe

3/8F1.6 . 2

Model

(Flexible hose total length800)

(Right side piping

installation)

(Left side piping

installation)

Drain pipe (VP-20)

Front view(to open the grille)

700

449

86

581 54

31 280

35

Knock out hole for under piping
Refrigerant piping.Drain pipe.
Wiring hole

12-Louvers(manual)

Air outlet

Lower side

80

50

395400

190

60

70 35

79

160 40

235

705

power supply

153

OUTLINES AND DIMENSIONS

1.INDOOR UNIT
PK-1.6GKL
PK-2GKL

Unit : mm

10

5

SYMBOL
P.B
I.B

CN1
CN2
SW17
SW18

RU
BZ
LED1
SW2

C
MF
MV
TB2~TB6
RT1

RT2

R.B

W.B

CN2L
CN51
FC
SW1
SW2
SW3
SW5
SW6
SW7
SW8
SW9

INDOOR POWER BOARD
INDOOR CONTROLLER BOARD
CONNECTOR (LOSSNAY)
CONNECTOR (CENTRALLY CONTROL)
FAN PHASE CONTROL
SWITCH (FUNCTION SELECTOR)
SWITCH (ADDRESS SELECTOR)
SWITCH (EMERGENCY OPERATION)
SWITCH (MODEL SELECTOR)
SWITCH (TWIN / TRIPLE SELECTOR)
SWITCH (MODEL SELECTOR)
SWITCH (OPTION)
SWITCH (MODEL SELECTOR)

RELAY (FAN MOTOR)
FUSE (6.3V / 250V)
VARISTOR
LED (DC 12V POWER)
LED (DC 5V POWER)
CAPACITOR (FAN MOTOR)
FAN MOTOR
VANE MOTOR
TERMINAL BLOCK
ROOM TEMPERATURE THERMISTOR
(0: / 15k" , 25: / 5.4k" / DETECT)
PIPE TEMPERATURE THERMISTOR / LIQUID
(0: / 15k" , 25: / 5.4k" / DETECT)

REMOTE CONTROLLER BOARD (OPTION)
CONNECTOR (PROGRAM TIMER)
CONNECTOR (REMOTE SWITCH)
SWITCH (ADDRESS SELECTOR)
SWITCH (FUNCTION SELECTOR)
WIRELESS REMOTE CONTROLLER BOARD
RECEIVING UNIT
BUZZER
LED (RUN INDICATOR)
SWITCH (COOLING ON / OFF)

NAME SYMBOL

I.B

SYMBOLNAME NAME
X4
F1, F2
ZNR
LED1
LED2

WIRING DIAGRAM

PK-1.6GKL
PK-2GKL

NOTES :

1. Since the indoor fan motor (MF) is connected with 230, 240V power. If 220V power is used, change the dip switch (SW8) on the indoor controller board as
shown in fig : w2.

fig w2

Indoor fan motor (MF)for 220V.

ON
OFF

1

SW8

2 3 4

56

ON
OFF

1

SW8

2 3 4

56

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

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

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.

11

6

INDOOR UNIT
PK-1.6GKL
PK-2GKL

OUTDOOR UNIT
PU-1.6/2J series

Indoor heat
exchanger

Pipe temperature
thermistor
RT2

Distributor

Flexible tube

Flared
connection

Flared
connection

Refrigerant pipe [15.88(5/8")
(with insulator) option

Refrigerant pipe [9.52(3/8")
(with insulator) option

Ball
valve

Low pressure
switch

Charge
pIug

Check plug

High pressure
switch

Outdoor heat
exchanger

Strainer

Capillary tube
for injection
(Only PU-2VJA

2)

Capillary tube

Compressor

Accumulator

Ball valve
(with service port)

flow of refrigerant

PU-1.6 (O.D.3.2 I.D.1.8 OR900)
PU-2 (O.D.4.0 I.D.2.0 OR430)

REFRIGERANT SYSTEM DIAGRAM

PK-1.6GKL / PU-1.6VLJA2
PK-2GKL / PU-2VJA2

Unit : mm

12

7

OPERATION FLOW-CHART

MAIN OPERATION

START

YES

NO

NO

NO

YES

NO

NO

w1

YES

YES

YES

Set time

complete

YES

NO

w2

Trouble

Trouble STOP

PROTECTION DEVICE

SELF HOLD

NO

YES

w3

Remote controller

trouble display

Remote controller

operation display

Operating mode

(COOL)

NO

Operating mode

(DRY)

NO

YES

COOL operation

YES

DRY operation

Power circuit

breaker

1

YES

Check SW

ON twice

Operation SW

ON

“OFF” timer

NO

“ON” timer

Set time

complete

STOP

PROTECTION DEVICE

SELF HOLD RELEASE

Remote controller

indicator lamp OFF

w6

Indoor side

FAN operation

w4

Fan STOP

Outdoor side

w5

Compressor OFF

Fan STOP

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

● EO-Signal transmitting/receiving error

● P1-Room temperature thermistor malfunction

● P2-Pipe temperature thermistor malfunction

● P4-Drain sensor malfunction

● P5-Drain overflow

● P6-Coil frost

● P7-System error

● P8-Outdoor unit trouble

w3 The CHECK switch will indicate if an error has occurred in the past.
w4 Fan runs on low speed for 1 minute in order to remove overheat air.
w5 The 3-minute time-delay functions after compressor stops.
w6 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)

13

COOLING OPERATION

COOL operation

NO

NO

NO

Vane setting notch

Initial

COOLING

w8

50 deg downward angle
60 deg downward angle

NO

Vane horizontal

w9

YES

Vane initial

setting

Vane

YES

Fan speed

LOW

YES

Downward
discharge

1 hour

YES

airflow

Compressor

thermostat

ON

Allowance

cancel

NO

NO

YES

YES

NO

w11

YES

3-minute

time delay

6-minute
time delay

3-minute

compressor

operation

w10

Coil frost
protection

Cooling area

NO

NO

YES

NO

YES

NO

Allowance

period

NO

6 minute

time delay

Allowance set

YES

Coil frost protection

YES

10-minute

NO

Allowance cancel

NO

Compressor ON

compressor

operation

YES

Coil frost

prevention

NO

16-minute

compressor

operation

YES

Indoor pipe

temperature is

1°C or lower

NO

1

YES

YES

Coil frost

prevention

Compressor OFF

Pipe

YES

YES

NO

NO

3-minute
time delay

temperature is
10°C or higher

Defrosting protection

detection temperature

-1°C or lower

6-minute
time delay

Coil frost

prevention release

NO

1 min continue

FAN speed

FAN speed
LOW 5 min

LOW

elapse

YES

NO

YES

Outdoor unit

trouble

w8 When operation stops or changes to cooling or dry mode, the auto vane turns to a horizontal angle. If operation changes

during auto vane SWING, the auto vane will continue to swing.

w9 When operating TEST RUN, the thermostat will be continuously ON.
w10After 3 minute compressor operation, if the pipe temperature thermistor reads -15°C or below for 3 minutes, the compres-

sor will stop for 6 minutes.

w11Heating area : Pipe temperature is more than 5 degrees above the room temperature.

Cooling area : Pipe temperature is more than 5 degrees below the room temperature.
FAN area : Pipe temperature is within 5 degrees either way of the room temperature.

14

DRY OPERATION

DRY

operation

Vane

setting notch

NO

YES

NO

Initial dry

operation

YES

Vane initial setting

w12

Room temperature is

18°C or lower

NO

During

compressor ON

YES

3-minute

compressor

operation

YES

Compressor &
thermostat ON

YES

w8

w9

NO

NO

YES

3-minute

time delay

NO

Compressor &

thermostat

ON

NO

YES

w9

Compressor ON

time completes

YES

10-minute compressor

OFF timer start

Compressor OFF

Fan STOP

1

w8~9 Refer to page 20~21.
w12 When room temperature is 18°C or below, the compressor cannot operate.

When room temperature rises over 18°C, the compressor starts after a 3-minute time delay.

w13 Compressor ON time is decided by room temperature. Refer to page 20~21.

w14 In dry operation, compressor ON makes the fan speed LOW. Also, when the compressor OFF and the pipe temperature

is 26°C or less, the fan stops, or when the compressor OFF and the pipe temperature is below 6°C, the fan speed
changes to LOW mode.
It is not possible to set the fan speed with the remote controller.

NO

w14

10-minute

compressor

OFF

YES

Compressor ON

time set

Compressor ON

Fan speed LOW

NO

w13

w14

15

8

FILTER
CHECK MODE
TEST RUN

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

AM
PM

TEST RUN

FUNCTION

˚C

TEMP.

MICROPROCESSOR CONTROL

1. OUTLINE OF MICROPROCESSOR CONTROL

INPUT to remote controller

● OFF-ON switching.

● COOL/DRY-FAN selector switching.

● Thermostat setting.

● TIMER mode selector-switching and Timer

setting.

● HIGH-LOW fan speed switching.

● AUTO Vane selector (AIR DISCHARGE)

switching.

● TEST RUN switching.

● CHECK mode switching.

(Self diagnostic trouble shooting)

Indoor unit

Remote controller board

● Processes and transmits
orders.

Non-polar, two-wire
cable maximum
length 500 meters
(WIRED only)

Signal

12VDC

OUTPUT to remote controller

Remote controller

● LCD indicator

WIRED REMOTE

CONTROLLER (OPTION)

INPUT from indoor unit

● Room temperature thermistor (RT1)

● Pipe temperature thermistor (RT2)

OUTPUT to indoor unit

● Auto vane’s angle setting.

● Emergency stop.

Independent Control of
Outdoor Unit

● Compressor protection
device working

● Crankcase heater control
ON-OFF.

Indoor controller board

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

● Processes orders and data.

● Controls indoor and outdoor operation.

● Self diagnostic function.

w System control operation.
w Emergency operation.
w Set by dip switch on indoor controller board.

● Transmits the power to remote controller.

12

Non-polar two-wire cable

Outdoor unit

12VDC

1
2

WIRELESS

REMOTE

CONTROLLER

● Compressor and
outdoor fan : ON­OFF.

OUTPUT to outdoor unit

16

2. INDOOR UNIT CONTROL

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Compressor

ON

ON

LOW or HIGH LOW or HIGH

OFF

OFF

ON

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.

FILTER

CHECK MODE

TEST RUN

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

AM
PM

TEST RUN

FUNCTION

˚C

TEMP.

2-1 COOL operation

WIRED REMOTE

CONTROLLER (OPTION)

<COOL operation time chart>

WIRELESS REMOTE

<How to operate>

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

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

NOTE: Set temperature changes 1°C when the or

button is pressed one time.
Cooling 19 to 30°C

CONTROLLER

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

period has ended.

(1) Compressor control

1 3-minute time delay

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

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

The compressor stops when room temperature is equal to or lower than the set temperature.
The compressor maintains the previous state when the discharge temperature minus the set temperature is 0°C or more, or
lower than 1°C.

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 pipe temperature thermistor (RT2) reads 1°C or below after
the compressor has been continuously operated for at least 16 minutes or more. When the pipe temperature rises to 10°C
or above, the compressor will start in a 3-minute(w2) time delay.
w2 When the pipe temperature is -1°C or less, the compressor starts in 6 minutes.

NOTE : By turning OFF the dip switch SW1-3 on indoor controller board, the start temperature of coil frost prevention changes

from 1°C to -3°C.

17

5 Coil frost protection

10 50 60

10

30

50

60

AUTO RETURN

When indoor coil temperature 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, displaying a check code of “P6” on the remote controller.

<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.

(i ) Fan speed LOW/HIGH depends on the remote controller setting regardless of the thermostat ON/OFF.
(ii) Fan speed will remain on LOW if an abnormality in outdoor unit is detected. (5 minutes)

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

(3) Auto vane control

Auto vane position is set to 10 degrees airflow at the start-up of COOL operation.
(a) Vane position set mode & swing mode.
( i ) Every time VANE button is pressed, setting will be changed .
(ii) Airflow direction can be changed with VANE button.

1 Fan speed : LOW

10°

50°

60°

SWING

2 Fan speed : HIGH

10°

30°

50°

60°

SWING

<VANE POSITION>

1 Fan speed : LOW

2 Fan speed : HIGH

As for the unit opreted with only wired remote controller,
When 50 degrees or 60 degrees airflow is selected with the LOW fan speed in COOL operation, “1Hr” will appear right side
of the air direction display. One hour later, the airflow direction returns to 10 degrees automatically and “1Hr” will disap­pear. If the airflow direction is set to 10 degrees during “1Hr” indication, the time counting for AUTO RETURN is cancelled.

18

(4) Detecting abnormalities in the outdoor unit

After the compressor has been continuously operated for 3 minutes, if the difference between the pipe temperature and
room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the differ­ence is still out of RANGE C,the outdoor unit is functioning abnormally. Thus, the compressor stops and check code “P8”
appears on remote controller.
RANGE A: Pipe temperature is more than 5 degrees above room temperature.
RANGE B : Pipe temperature is within 5 degrees either way of room temperature.
RANGE C : Pipe temperature is more than 5 degrees below room temperature.

Pipe temperature
minus room temperature

(degree)

+5

0

-5

RANGE A

RANGE B

RANGE C

19

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Compressor

ON

ON

DRY MODE

DRY MODE

OFF

OFF

ON

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.

2-2 DRY operation

FILTER

CHECK MODE

TEST RUN

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

AM
PM

TEST RUN

FUNCTION

˚C

TEMP.

WIRED REMOTE

CONTROLLER (OPTION)

<DRY operation time chart>

<How to operate>

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

NOTE: The set temperature changes 1°C when the or

button is pressed one time.
Dry 19 to 30°C

WIRELESS REMOTE

CONTROLLER

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

period has ended.

(1) Compressor control

13-minute time delay

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

2The compressor stops in check mode or during protective functions.

20

4The compressor will not start when the room temperature is below 18°C.

Compressor OFF

6°C or more

Below 6°C

STOP

Pipe temp. Fan

LOW

All LOW

Compressor ON

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 following room temperatures.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 above 26°C~28°C with thermostat ON, the compressor will operate for 4
more minutes and then stop for 3 minutes.

● If the room temperature 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 fan runs on LOW speed when the pipe temperature is 6°C or more, or the compressor is OFF and the pipe
temperature is below 6°C.

(a)During compressor OFF

● When the pipe temperature is 6°C or above, the indoor fan will stop.

● When the pipe temperature is below 6°C, the indoor fan will run on LOW speed.

(b)During compressor ON

● The indoor fan runs on LOW speed.
<Dry mode>

The fan notch is controlled by the pipe temperature every 30 seconds.

Fan control in DRY operation.

(3) Auto vane

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

10°

1

30° downward

2

50° downward

3

60° downward

4

swing

5

2-3 Auto vane control

FILTER

CHECK MODE

TEST RUN

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

AM
PM

TEST RUN

FUNCTION

˚C

TEMP.

<How to operate>

To change the air flow direction, press VANE button.

WIRED REMOTE

CONTROLLER (OPTION)

WIRELESS REMOTE

CONTROLLER

1

10°

2

30°

3

50°

4

60°

Available in COOL operation with fan speed on HIGH .
Unavailable in DRY operation.
If fan speed changes from HIGH to LOW during 30°
downward airflow in COOL mode, the direction automat­ically changes to 10°.

Changes by pressing
the VANE button.

(1) COOL/DRY operation

At the start-up of COOL or DRY operation, the airflow direction in automatically set to 10°. After, it can be changed to
another direction with VANE button on the remote controller.

<Auto return>

When 50° or 60° airflow is set with fan speed in LOW, “1Hr” appears right side of the air direction. One hour later the
direction changes to 10 degrees, automatically and “1Hr” disappears. (Only wired remote controller)

22

2-4 TIMER operation

OFF

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

RESET

AM
PM

TEST RUN

FUNCTION

˚C

MODE FAN

VANE

TEMP.

START

STOP

HR.

MIN.

(1) WIRED REMOTE CONTROLLER (OPTION)

FILTER

CHECK MODE

TEST RUN

<Timer setting example>

This setting will stop the air conditioner in 8 hours.
With the lapse of time, time display changes in 1 hour units, showing remaining time.

<Timer function>

AUTO STOP ·········The air conditioner stops after the set time lapses.
AUTO START ········The air conditioner starts after the set time lapses.
AUTO OFF ············Timer is not active.

<How to operate>

1. Press POWER ON/OFF button.

2. Press “ ” button to select AUTO STOP or AUTO START.

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

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

(2) WIRELESS REMOTE CONTROLLER

B

A

1

24

3

<How to operate>

1 Press the ON/OFF button to turn it ON.
2 Press the STOP or START button (TIMER SET).

·Time can be set while the following symbol is displayed.

OFF timer : A , B is displayed.
ON timer : A , B is displayed.

3 Use the HR. and MIN. buttons to set the desired time.
4 Cancelling the timer.

To cancel the OFF timer, press the STOP button.
To cancel the ON timer, press the START button.

▼

▼

·It is possible to combine both OFF and ON timers.

·Pressing the ON/OFF button of the remote controller during

timer mode to stop the unit will cancel the timers.

23

TEST RUN

2-5 Test run

ON/OFF

CHECK

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM
PM

RESET

AM
PM

TEST RUN

FUNCTION

˚C

MODE FAN

VANE

TEMP.

START

STOP

HR.

MIN.

(1) WIRED REMOTE CONTROLLER (OPTION)
<Before test run>

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

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

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

Remote controller

Turn on main switch.12 hours before proceeding to step 2 to allow

1

for crankcase heater operation.
Push the TEST RUN button twice and indication of TEST RUN will

2

be shown on the liquid crystal display.
Press the button, COOL/DRY to confirm that cool air is

3

blown out.
Push button LOW/HIGH to check that the fan speed changes

4

properly.
Check the operation of outdoor unit fans.This unit controls the rota-

tion speed and performance capacity of fans. ln some cases,it may
rotate at low speed as the condition of outside air requires and the
speed will be kept unless the performance has become deficient.

TEST RUN button

5

Therefore,when the condition of outside air demands,there may be
such cases as the fan stops or rotates reversely.

TEST RUN

Indoor coil temperature code

Display

Display

Please note that these symptoms are not malfunction.
After the check is finished leave the test run mode, push the power

ON/OFF button.

6

It can also be stopped by pushing the timer MODE button.

*The above figure shows the state of TEST

RUN at cooling operation.

●When a TEST RUN is started,the timer shall be set to 2 hours. The unit will automatically turn off after 2 hours.

(2) WIRELESS REMOTE CONTROLLER

82

BA

7

5
4
6

3

<Before test run>
Measure an impedance between the power supply terminal block
on the outdoor unit and the ground with a 500 V Megger and
check that it is equal or greater than 1.0M"".

1 Turn on the main power to the unit..
2 Set the Nrm/Set selector switch (on the back of the controller)to <Set>.

AThe FUNCTION , TEST RUN and CHECK begin to blink.

3 Press the MIN. button.

B TEST RUN and current operation mode are displayed.

4 Press the MODE button to activate COOL mode, then check

whether cool air in blown out from the unit.

5 Press the

FAN button and check whether strong air is blown

out from the unit.

5 Press the

VANE button and check whether the auto vane

operates properly.

7 Press the ON/OFF button to stop the test run.

8

After trial run is complete, set the Nrm/Set selector switch to <Nrm.>

Note :

·Point the remote controller toward the inside unit’s receiver

while steps

33

though 77.

·It is not possible to run the unit in FAN or DRY mode.

24

(1) Pipe temperature code

1 ON

1

2

1 • 2 OFF

SW3

1

2

Code

Pipe temperature

Code

Pipe temperature

1

-40~2(1)°C
9

~45°C

2

3(2)~10°C

10

~50°C

3

~15°C

11

~55°C

4

~20°C

12

~60°C

5

~25°C

13

~70°C

6

~30°C

14

~90°C

7

~35°C

15

Thermistor abnormality

8

~40°C

During the test run, the pipe temperature code from 1 to 15 is displayed on the remote controller instead of room tem­perature. The code should fall with the lapse of time in normal COOL operation.

(2) Trouble during test run

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

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

2-6 Emergency operation

When the remote controller or microprocessor malfunctions but all other parts are normal, emergency operation is started
by setting the dip switch SW3 on the indoor controller board.

<Before emergency operation>

1. Make sure the compressor and the indoor fan are operating normally.

2. Locate the defect with the self-diagnostic function. When the self-diagnostic function indicates “protective function is
working”, release the protective function before starting the emergency operation.
CAUTION: When the self-diagnostic function indicates a check code of “P5” (drain pump malfunction), DO NOT start

the emergency operation because the drain may overflow.

<How to operate>

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

Emergency
cooling

Normal
operation

Microcessor board

2. Turn ON the outdoor unit breaker and then ON the indoor unit breaker.
Emergency operation will now start.

3. During emergency operation, the indoor fan operates on high speed, the auto vanes do not operate.

4. To stop emergency operation, turn OFF the indoor unit breaker.

5. Movements of the vanes do not work in emergency operation, therefore you have to slowly set them manually to the

appropriate position.
NOTE: The remote controller POWER ON/OFF button can not start/stop emergency operations.
CAUTION: Do not use emergency cooling for more than 10 hours, as the indoor coil may freeze.

25

2-7 Interlock with ventilation system (LOSSNAY)

Relay box

Relay box (PZ-12RB-E)

LOSSNAY

LOSSNAY

LOSSNAY control switch (PZ-05SLB

2-E) LOSSNAY control switch

(PZ-05SLB

2-E)

Mr. SLIM

Mr. SLIM

Remote
controller

Remote
controller

Remote display
adapter
(PAC-SA88HA-E)

Power
supply

Power supply

Mr. SLIM/LOSSNAY interlock operation is available by using the optional parts listed below.

(1) System organization

(2) LOSSNAY models connectable to Mr. SLIM are: LGH-15RS-E, LGH-50RS-E

LGH-25RS-E, LGH-80RS-E
LGH-35RS-E, LGH-100RS-E

(3) Required parts are:

● Relay box (PZ-12RB-E)…Contact capacity 10A

● Remote display adapter (PAC-SA88HA-E)…An optional part for Mr. SLIM

● LOSSNAY control switch (PZ-05SLB2-E)…For LOSSNAY individual operation

(4) Operation

1LOSSNAY turns ON/OFF according to Mr. SLIM ON/OFF
2While Mr. SLIM is OFF, LOSSNAY individual operation is available by using the LOSSNAY control switch.

When Mr. SLIM turns OFF with the LOSSNAY control switch at ON, LOSSNAY will continue to operate.

(5) Wiring.

Mr. SLIM

Indoor controller

N
L

DAMPER

2-E)

LOW

board

Connector

CN51

ORN

RED

BRN

Remote
controller

Power
supply
50Hz
220 240V

10m

Connecting wire

0.13mm or over
Connecting wire

solid wire,

1.6 or 2.0
(field supplied)

Circuit breaker
(field supplied)

L

N

PL

HIGH

N

LOSSNAY control switch
(PZ-05SLB

Insulation
is needed

2

Power supply
for Mr. SLIM
220 240V AC

GRN

YLW

Relay box

(PZ-12RB-E)

YLW

Junction box
(field supplied)

A
B
L
N

HIGH

N

Terminal
block

LOW

HIGH

N

DAMPER
DAMPER

ORN
RED

WHT

RED

WHT

LOSSNAY

ORN
RED

WHT
RED
ORN
WHT

8

7

4

6
2

5

3

1

26

2When the LOSSNAY control switch is not used:1When the LOSSNAY control switch is used

Relay box

(PZ-12RB-E)

Terminal block

A B L N HIGH N

Mr.SLIM
CN51
12V DC

L

Power supply
220 240V AC

NOTE: For further information, refer to the

LOSSNAY technical & service manual.

Circuit
breaker

N

LOSSNAY

Terminal block

ORN

LOW

RED

HIGH

WHT

N

RED

DAMPER

ORN

DAMPER

WHT

2-8 Dip switch functions

Each figure shows the initial factory setting.

1. On remote controller board

(1) SW17(Address selector)

1 2 3 4 5 6 7 8

ON
OFF

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

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

SW17-8) Switch for system back-up.

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

(2) SW18(Function selector)

1 2 3 4

ON
OFF

SW18-1) Switch for timer

OFF:Single day ON:timer every day

SW18-2) Switch for filter sign

OFF:filter sign absent
ON :filter sign present

SW18-3) Switch for filter sign time setting.

OFF:100Hr ON:2500Hr
SW18-4) Not for use.
SW18-5) OFF:For models with heat pump.

ON :For models with cooling only.
SW18-6~8) Not for use.

2. On indoor controller board

(1) SW1 (Mode selector)

1 2 3 4 5 6 7 8 9

ON
OFF

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

OFF:AUTO mode for models with heat pump

ON :Fan mode for models with heat pump
SW1-2) Not for use.
SW1-3) Switch to change the temperature to start coil frost prevention

OFF:1°C

ON :-3°C
SW1-4) Not for use.
SW1-5) Not for use.
SW1-6) Not for use.
SW1-7) Switch for detecting abnormalities in the outdoor unit abnormality detection

OFF:When an abnormality occurs,it is detected.

ON :Even if an abnormality occurs,it can not be detected.
SW1-8) Switch for auto restart function

OFF:This function does not work

ON :This function works.
SW1-9, 10) Not for use.

5678

10

27

(2) SW2 (Address selector)

1 2 3 4 5 6

ON
OFF

Used in setting the unit-address for group control.
For further information,refer to page 36.

(3) SW3 (Emergency operation switch)

Normal operation

1 2

ON
OFF

For emergency cooling

1 2

ON
OFF

(4) SW5 (Model selector)

1 2 3 4

ON
OFF

SW5-1) Not for use.
SW5-2) OFF:For models with heat pump

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

(5) SW6 (Address selector)

1 2 3 4

ON
OFF

SW6-1 OFF ON(Twin NO.1)
SW6-2 OFF ON(Twin NO.2)
SW6-3 OFF OFF
SW6-4 OFF OFF

Single control Twin control

(6) SW7 (Model selector)

Switch to set the output of phase-controlled indoor fan motor.
Address setting is available at any time.
The initial factory setting by is based on each capacity.

Service Ref.

SW7

PK-1.6GKL

ON
OFF

1 2 3

PK-2GKL

ON
OFF

1 2 3

(7) SW8

1 2 3 4

56

ON
OFF

SW8-1~2) Not for use.
SW8-3~4) Not for use.
SW8-5) Not for use.
SW8-6) OFF:For 240, 230V power supply

ON: For 220V power supply

(8) SW9

1 2 3 4

5

ON
OFF

SW9-1~5) Keep this switch.

28

9

TROUBLESHOOTING

1. TROUBLES IN TEST RUN

Symptom

The display “CENTRALLY
CONTROLLED” on remote
controller dose not disap­pear.

When remote controller
POWER button is turned
ON, the check code
“EO”appears.

Cause Check points

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

2) Timer adapter is connected to the
remote controller.

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

1) Signal transmission error between
indoor unit and remote controller

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

2) Make sure the timer adapter is used correctly.

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

7 ON to make it sub controller.

2 Connect the sub controller to the unit, and

turn circuit breaker ON.

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

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

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

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

3 If the display disappears, turn the remote

controller POWER button ON and check as
follows.

Remote controller

1

Operating Display

2

Operating Display

3

No Display

4

No Display

Sub remote controller
EO Display

Operating Display

EO Display

Operating Display

Malfunction of
indoor Unit

Malfunction of
Remote controller

Malfunction of
indoor Unit and
Remote Controller

Malfunction of
Remote controller

Malfunction

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

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

1) Short circuit of indoor/outdoor connect­ing wire

2) Short circuit of transmission wire.

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

1) Damaged remote controller.

2) Short circuit of transmission wire.

3) Bad contact of indoor CN40.

4) CN40 is attached to a sub unit.

5) Damaged power board.

6) Bad contact of CN2D.

7) Blown fuse.

8) Circuit breaker OFF.

1), 2) Check the wire

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

If the remote controller remains abnormal,

despite the above measures, replace the indoor
controller board.

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

2) ~ 8) Check each point.

If it is not defective, replace the indoor
controller board.

29

2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER
(WIRED REMOTE CONTROLLER (OPTION))

2-1 When malfunction occurs during operation

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

address and the check code are displayed alternately at one-second
intervals. (Check mode)

Example

CHECK mode

Check

code

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

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

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

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

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

60 seconds maximum to display the memorized check code.

Unit

address

Check button

2-2 How to use the self diagnostic function for service

A. For normal control with one unit and one remote controller

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

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

(3) Check and repair the unit according to the check code. (Refer to page 32.)

B. For group control using one remote controller

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

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

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

The check code “EO” means the following conditions:

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

● power is not supplied to the unit.

● Signal transmitting/receiving circuit is abnormal.

(4) Check and repair the unit according to the check code. (Refer to page 32.)

▲

▲ ▼

▼

30

(WIRELESS REMOTE CONTROLLER)

(1) Turn on the main power of the unit.
(2) Set the adjusting switch on the back of

the wireless remote controller to “Set” then
FUNCTION , TEST RUN and CHECK
will start lighting.

★(3) Press the HR. button then CHECK will

start blinking.

★(4) Send the signal from the remote con-

troller to the unit with pressing HR. but­ton.
If the buzzer sound is heard are the
ON/OFF lamp (Unit display) blinks, refer to
the following table.

Buzzer sound

1 second (0.5 sec-

ond interval)

Beep

The number of

ON/OFF lamp

(Unit display)

blinking and

buzzer sound

1(P1)
2(P2)
3(P3) Signal transmission error
4(P4)
5(P5)

6(P6)

The number of ON/OFF

lamp (Unit display) blinking

This corresponds to the

number of buzzer sound

Irregular point

Irregular intake sensor
Irregular piping sensor

Irregular drain sensor
Irregular drain pump

Freezing protection is

working

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

FUNCTION
TEST RUN

CHECK

ON/OFF

MODE FAN

RESET

VANE

Remove the battery cover on the back side of
the wireless remote controller, display will start
flashing when the “Set” switch is turned on.
For operations marked “ ”, point the transmitter

★

to the wireless receiver, and make sure that you
will hear a short beep from the receiver.

Turn the adjusting switch to “Set”

˚C

AM
PM

AM
PM

TEMP.

START

STOP

HR.

MIN.

Display will start blinking

ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.

AM

FUNCTION
TEST RUN

CHECK

ON/OFF

PM

AM
PM

TEMP.

˚C

7(P7) System error
8(P8)

Irregular outdoor unit

(Refer to the page 32 in detail.)
When there is any error, receiving sound

beeps.

★(5) Push the POWER ON/OFF button and

cancel the test run.

(6) After completing a test run, be sure to

For operations marked “ ”, point the transmitter to the wireless

★

receiver, and make sure that you will hear a short beep from the
receiver.
When the other than main unit is operated by the wireless remote
controller, the receiver beeps an ineffectual beep 3-times.

31

Check

code

EO Signal transmitting/receiving

Diagnosis of malfunction Cause Check points

error

(Indoor controller does not

respond to remote controller
signal.)

During individual unit control

1) Bad contact of transmission
wire

2) Signal transmitting/receiving cir­cuit is abnormal.

1) Check the transmission wire.

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

P1P2Abnormality of room temper-

ature thermistor (RT1)

Abnormality of pipe tempera-

ture thermistor (RT2)

P3 Signal transmission error

(Remote controller does not

respond to indoor controller
signal.)

P6 Freezing protection

is working.

P7 System error 1) Wrong address-setting

1) Bad contact of thermistor

2) Damaged thermistor

1) Bad contact of transmission
wire

2) Signal transmitting/receiving cir­cuit is abnormal.

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

1) Short cycle of air cycle

2) Dirty air filter

3) Damaged fan

4) Abnormal refrigerant

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

3) Wrong SW6-setting

1) Check the thermistor.

2) Measure the resistance of the thermistor.
Normal resistance should be as follows.

0: ···15kΩ 30:·····4.3kΩ
10:······9.6kΩ 40: ·····3.0kΩ
20:······6.3kΩ
If the resistance is normal, replace the indoor
controller board.

1) Check the transmission wire.

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

3) Short-circuit between
attach CN40 to the following units.

● Second unit in twin control

● Sub units in group control

1) Clear obstructions from the air cycle.

2) Clean the air filter

3) Check the fan.

4) Check the refrigerant temperature.

1) Check the address-setting.

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

3) Check SW6 setting.

1 and 2 of CN40 and

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

connecting wire

2) Reversed phase

3) Protection device is working

3. WHEN OUTDOOR UNIT DOES NOT WORK

Cause

1) Indoor/outdoor connecting wires are poorly connected.

2) Power supply is poorly connected.

3) Fuse (5A) in the outdoor controller board is blown.

1) Check the connecting wires.

2) Check the power supply.

3) Check the fuse.

1) Check the indoor/outdoor connecting wire.

2) Change the connection of electric wiring.

3) Check the protection device.

Check points

32

4. OTHER TROUBLES AND CAUSES

Vanes do not work.

Unit stops after 5 to
20 seconds operation

Air discharge display
is OFF and VANE
button does not oper­ate.

In this case, remote
controller is normal.

Power ON/OFF button
is not available.

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

Protection function is working.

Indoor controller board

deems the auto vanes
are not attached to the
unit.

Horizontal angle can

not be detected.

Beep sound is heard,
but display is turned

OFF.

Beep sound is not heard,

and display remains OFF.

“CENTRALLY CONTROLLED” is displayed.

Indoor controller is
damaged.
Dip switch setting is
wrong.

Indoor controller is
damaged.
Vane motor is dam­aged.
Auto vane is wired after
power is turned to ON.

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

Remote controller is
damaged.
Transmission wire is
poorly connected

Vane motor is damaged.
Vane motor relay is damaged.

Refer to check code on remote controller display.
See page 32.

Vane motor is damaged.

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

5. MR. SLIM/LOSSNAY INTERLOCK OPERATION

<Symptoms that are not malfunctions>

If any of the following symptoms occur, they are not malfunctions.

Symptom

LOSSNAY control switch can not work during interlock opera-

LOSSNAY control switch does not work.

LOSSNAY air speed can not be controlled in interlock opera­tion.

For LOSSNAY, troubleshooting refer to the LOSSNAY technical & service manual.

tion.
LOSSNAY control switch is effective only while Mr. SLIM is not
operating.

LOSSNAY fan speed is fixed to HIGH during interlock opera­tion.
LOSSNAY fan speed LOW/HIGH can be switched only during
LOSSNAY individual operation with the LOSSNAY control
switch.

33

Cause

6. How to check the parts PK-1.6GKL , PK-2GKL

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature (:)

Resistance (k")

Parts name Check points

Room temperature
thermistor

(RT1)
Pipe temperatuer
thermistor (RT2)

Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)

Normal

4.3k'~9.6k'

Abnormal

Open or short

(Refer to the thermistor)

Fan motor (MF)

Relay connector

3

Red

White

2

C

1

Black

Protector

Vane motor (MV)

Measure the resistance between the terminals using a tester.

Motor terminal

1

Relay connector

3
5

Red-Black

White-Black

Measure the resistance between the terminals using a tester.
(Surrounding temperature 20°C~30°C)

Orange

4

Red

5

Pink

2

Connector

M

Brown

Yellow

3 6 1

Blue

Brown-Yellow

Brown-Blue

Red-Orange

Red-Pink

<Thermistor Characteristic graph>

Thermistor for
lower temperature

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

or

Normal

186~214'

Normal

PK-GKL

1.6, 2

141.2'

131.5'

Abnormal

Open or short

Abnormal

Open or short

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

Rt=15exp { 3480( ) }

1

273+t

0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.2k'
30: 4.3k'
40: 3.0k'

1

273

34

10

Unit

Remote
controller

Unit Unit

Optional
adapter

Remote
ON/OFF
switch

Remote
controller

Relay box

Unit

Unit

Remote
controller

Unit Unit

Unit

Remote controll
display board

Remote
controller

Unit Unit

Circuit breaker

Remote
controller

SYSTEM CONTROL

1. VARIETY OF SYSTEM CONTROL FUNCTIONS

1 Group control with

a single remote
controller
(See page 36.)

3 Both remote

ON/OFF and indi­vidual controls
(See page 37.)

w Timer adapter

(PAC-SA89TA-E)
is needed.

4 Individual control

by grouping
remote controllers
(See page 38.)

5 Multiple remote

control display
(See page 39.)

w Multiple remote

controller adapter
(PAC-SA88HA-E)
is needed.

Many units, installed at different locations, can be started

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

All units can be turned on or off simultaneously using a

remote ON-OFF switch. Also, each unit can be controlled
individually by each remote controller. Dunning remote
ON-OFF control, a message of “CENTRALLY CON­TROLLED” is displayed on the LCD of the remote con­troller.

This is available for both one unit control and several units

control.

By grouping the remote controllers in one place, several

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

Several units can be controlled with a remote control dis-

play board. Operation conditions of all the units are visi­ble with the remote control display board.

Individual control by each remote controller is also possi-

ble.

6 Auto restart

function

(See page 39.)

A unit can be started or stopped with the circuit breaker

on or off.
Remote controller is also available.
With this function, when the power is restored after power

failure, the unit will restart automatically. (However, when

the remote controller POWER ON/OFF button is OFF, the

unit will not start.)

35

2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

6

To remote
controller

To next
unit

To next unit

The last unit
dose not have
this wire.

Next unit
electrical box

Master unit
electrical box

123LN
PE

LN

PE

123

Master
unit

No.1 unit No.2 unit Last unit

2-wire cable

SW2

CN40

CN40

SW2

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

1

2

3

4

5

6

ON

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

2-1 How to wire

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

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

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

double terminal block of No.1 unit.

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

ble terminal block of No.2 unit.

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

two-wire cables. (See Figure 2.)

(5) Remove the connector CN40 from the indoor controller

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

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

controller board following the instructions below.

2-2 How to set unit-address

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

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

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

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

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

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

Figure 1

Figure 2

Figure 3

Indoor controller board ▼

Setting examples

SW2

Unit address & start
delay in seconds.

2-3 Unit control

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

Master (No. 0) unit

ALL OFF

No. 1 unit

1 ON

0

1

No. 2 unit

2 ON

2

No. 4 unit

3 ON

4

No. 8 unit

4 ON

8

No. 16 unit

5 ON

16

No. 32 unit

6 ON

32

36

3. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS

Remote
controller

power supply of
control circuit

Remote
ON/OFF

switch

2-wire
remote
controller
cable

Figure 6

Relay box

Timer adapter cables

Timer adapter
PAC-SA89TA-E

Power
supply

Remote
ON/OFF
switch

No.1 unit
relay box

No.2 unit
relay box

Next unit

T

X2 X2

T

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

To
No.1
unit

To
No.2
unit

Timer adapter cables

Remote controller

T

X2

SW

1

SW2

T

X2

This method is available to control one unit or any number of units.
The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switch
to the system. Timer adapter is an optional part. Other parts are available on the market.
(A) To start all units in order by remote ON-OFF switch
(B) To stop all units simultaneously by remote ON-OFF switch
(C) To switch between the remote ON-OFF control and the individual remote control

3-1 System

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

NOTE1 : Install the relay box where you can be serviced it easily.
NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control

circuit.

NOTE3 : When the power supply of the control circuit is 220/240V AC,

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

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

3-2 Basic wiring

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

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

37

3-3 Switch function of remote ON-OFF switch

Remote
controller cable (2-core)

Remote controller

SW2

(Switches between remote ON-OFF and individual control)

ON

(Remote ON-OFF control)

ON

SW1
(Switches between
remote ON and OFF.)

w1 After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller.
w2 After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.

(Start)

OFF

(Stop)

All units start together.
Individual control is not available.

All units stop together.
Individual control is not available.

w1
w2

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

OFF

(Individual control)

4. INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS

● Grouping the remote controllers allows individual control and cen­tralized monitoring of units installed in different places without a
special control board.

● Remote control cables are extendible up to 500m. When the cable
length exceeds 12m, use the double-insulated two-care cable such
as Belden 9407. Also, the cable thickness must be No. 22 AWG or
above.

● When gathering the power ON/OFF switches of air conditioners
near the remote controllers, you should also install the power
ON/OFF switch near each unit to prevent electric trouble during
servicing.

38

5. MULTIPLE REMOTE CONTROL DISPLAY

CN51

connector(5P)

GREEN

Power
supply

Electrical insulation is needed.

Wiring at the actual place

Optional multiple display
adapter

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

YELLOW
ORANGE

RED

BROWN

5

X2

X2

GL

RL

X1

X1

1

<Wiring >

CN51

Indoor controller board

CN51

Power
supply

Remote
controller
cable

Relay box
(Field supply)

Remote
controller

Remote
controller

Remote
controller

3wires
3wires
3wires

2wires

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

Muitiple remote control
ON-OFF display
(Field supply)

(Operation check)

<System>

Power
supply

RL-1
GL-1

Multiple Remote Control Display

Multiple remote
controller adapter

connect to
the connector CN51

Relay box

5

X1-1

X2-1

1

<Wiring diagram>

RL-2
GL-2

RL-3

No.1 unit

GL-3

X1-1

X2-1

X1-2

X1-3

X2-3

X2-2

5

1

No.2 unit

5

1

No.3 unit

X1-2

X2-2

X1-3

X2-3

Remote controller

A
B

Brown

Red

Orange

Remote controller

A
B

Brown

Red

Orange

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

5-1 How to wire

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

indoor controller board.

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

in the figure below.

Indoor controller board

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

consumption below 0.9W.

Lamps:Matching to power supply voltage.

6. AUTO RESTART FUNCTION

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

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

7. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL

<Wiring>

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

39

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

DISASSEMBLY PROCEDURE11

PK-1.6GKL
PK-2GKL

OPERATION PROCEDURE

1. REMOVE THE LOWER SIDE OF THE INDOOR UNIT FROM
THE INSTALLATION PLATE.

(1) Remove the left / right corner box of the indoor unit.
(2) Hold and pull down the lower and both ends of the indoor

unit, and remove the ▼ section from the square hole.
(Refer to the figure 2.1)
Or remove the front panel and push the ▼ section down
by using hexagonal wrench ,etc. from the front side.
(Refer to the figure 2.2).

(3) Unhook the top of the indoor unit from the back plate

catch.

(Figure 2.2)

PHOTOS & ILLUSTRATION

(Figure 1)

(Figure 2.1)

Hook

Hook

Square hole

2. REMOVING THE FRONT PANEL.

(1) Open the front grille.
(2) Remove the terminal block cover with a screw.
(3) Remove the screw 3 caps then remove the set 3 screws.
(4) After removing the lower side of the front panel a little,

remove it as pulling toward upper.

3. REMOVING THE INDOOR CONTROLLER BOARD.

(1) Remove the terminal block cover.
(2) Remove the front panel. (see the photo 1)
(3) Remove the electrical box(2 screws).
(4) Remove the electrical box cover(1 screw).
(5) Disconnect the connector on the controller board and

remove the controller board by pulling up the hook of the
controller case.
w To smooth works, hang the side hooks of the electrical
box on the hook of the motor cover.
(see the photo 3)

Up

Down

(Figure 3)

(Photo 1)

Front
panel

(Photo 2)

Motor cover

Electrical box
hook w

Square hole

Terminal block cover

Front grille

Set screws

Set screw

Electrical box

Set screw

40

(Photo 3)

Hook

Control board

Controller case

Electrical box

OPERATION PROCEDURE

PHOTOS & ILLUSTRATION

4. REMOVING THE POWER BOARD

(1) Remove the front panel.(see the photo 1)
(2) Remove the electrical box(2 screws).(see the photo 2)
(3) Disconnect the whole connector in the control board.
(4) After lifting the controller case with pressing it’s convex

section, remove the controller case and the control board

simultaneously.(see the photo 3)
(5) Disconnect the connector in the power board.
(6) Remove the power board.

5. REMOVING THE VANE MOTOR

(1) Disconnect the connector CN6V on the indoor controller

board.

(2) Remove the 2 screws of the vane motor, disconnect the

lead wire and remove the vane motor from the shaft.

6. REMOVING THE THERMISTOR

(1) Removing the room temperature thermistor RT1.

1Disconnect the connector CN20<red> on the indoor

controller board.

2Remove the room temperature thermistor from the holder.

(2) Removing the pipe temperature thermistor RT2.

1Disconnect the connector CN21<white> on the controller

board.

2Remove the pipe temperature thermistor with set to the

pipe.

(Photo 4)

(Photo 5)

Nozzle
assembly

Vane motor

(Photo 6)

Pipe
temperature
thermistor

Room
temperature
thermistor

Power board

Electrical box

Set screws

Lead wire

7. REMOVING THE NOZZLE ASSEMBLY

(1) Disconnect the connector CN6V on the controller board.
(2) Disconnect the lead wire of the vane motor.
(3) Remove the corner cover.
(4) Pull the drain hose out from the nozzle assembly.
(5) Unhook the hook of the lower nozzle assembly and

pull the nozzle assembly toward you, then remove the
nozzle assembly by sliding it down.

8. REMOVING THE ELECTRICAL BOX

(1) Remove the terminal block cover.
(2) Remove the front panel.(see the photo 1)
(3) Disconnect the vane motor connector.
(4) Disconnect the fan motor connector from the fan motor.
(5) Remove the pipe thermistor and the room temperature

thermistor.(see the photo 6)

(6) Remove the electrical box (2 screws).

(Photo 7)

Nozzle assembly

(Photo 8)

Pipe
temperature
thermistor

Hooks

Electrical box

Drain hose

Corner cover

Vane motor
connector

Electrical box

41

Fan motor connector

OPERATION PROCEDURE PHOTOS & ILLUSTRATION

9. REMOVING THE FAN MOTOR.

(1) Remove the terminal block cover.
(2) Remove the front panel.(see the photo 1)
(3) Remove the electrical box.(see the photo 8)
(4) Remove the nozzle assembly.(see the photo 7)
(5) Remove the fan motor leg fixing 3 screws.
(6) Unscrew the set screws using by alankey and remove it by

sliding the fan motor to right.

(7) Remove the 4 screws and remove the motor cover from the

fan motor leg.

10. REMOVING THE LINE FLOW FAN

(1) Remove the terminal block cover.
(2) Remove the front panel.(see the photo 1)
(3) Remove the electrical box.(see the photo 8)
(4) Remove the nozzle assembly.(see the photo 7)
(5) Remove the fan motor.(see the photo 9)
(6) Remove the pipe fixture with 2 screws.(see the photo12)
(7) Remove the left / right screws of the heat exchanger and

pull the left-hand side up.

(8) Remove the 2 screws by sliding it toward you remove the

fixture(fixing bearing).
w The fan motor is removable first , when the fan

removing is hard.

w When resetting the fan to the fan motor.

Locate and fix the shaft after installing the fan.

(Photo 9)

Set

screw

(Photo 10)

Motor cover

Fan motor

(Photo11)

Heat exchanger

Set screws

Fixture(fixing bearing)

Motor cover

Fan motor

screws

motor leg

11. REMOVING THE HEAT EXCHANGER

(1) Remove the terminal block cover.
(2) Remove the front panel.(see the photo 1)
(3) Remove the electrical box.(see the photo 8)
(4) Remove the corner box.
(5) Remove the nozzle assembly.(see the photo 7)
(6) Remove the 2 screws and the pipe fixture.
(7) Remove the 2 screws and heat exchanger.

(Photo 12)

Set screw

Pipe fixture

Heat exchanger

Set screws

42

OPERATION PROCEDURE

PHOTOS & ILLUSTRATION

12. REMOVING the SIGNAL RECEIVING P.C. BOARD

(1) Remove the terminal block cover.
(2) Disconnect the connector <yellow> for the wireless remote

controller.
(3) Remove the front panel.(see the photo 1)
(4) Remove the 2 screws and signal receiving p.c. board cover.
(5) Remove the signal receiving p.c. board.

(Photo 13)

Set screws

(Photo 14)

Front
panel

Signal receiving p.c. board cover

Front
panel

Signal receiving p.c. board

43

12 PARTS LIST

(BG02V194H05)
(BG25B573H05)
(BG02V195H10)
(BG00V196G20)
(RG25C546H06)

T7W A01 762
R01 07Y 114
R01 07Y 105
R01 07Y 106
R01 005 103
R01 07Y 102
R01 07Y 130
T7W E13 530
T7W E06 202
R01 09Y 038
T7W E13 223
R01 07Y 527
T7W E12 310
T7W 520 239
R01 07Y 524
T7W 521 716
R01 588 255
T7W E05 202
T7W E67 480
T7W E02 313
T7W 512 716
R01 07Y 135
R01 07Y 038
R01 07Y 059
T7W A00 675
R01 50J 317

—
—
—
—
—

No.

Parts No. Parts Name

Specifications

Remarks

(Drawing No.)

Wiring
Diagram
Symbo

l

Recom-

mended

Q'ty

Unit

Amount

PKH-

1.6GKL 2GKL

Price

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

FAN MOTOR
LINE FLOW FAN
RUBBER MOUNT
BEARING SUPPORT
SLEEVE BEARING
BEARING MOUNT
MOTOR SUPPORT
NOZZLE
PIPE TEMPERATUER THERMISTOR
GUIDE VANE
VANE MOTOR
DRAIN HOSE
INDOOR CONTROLLER BOARD
FUSE
DRAIN PLUG
TERMINAL BLOCK
CAPACITOR
ROOM TEMPERATURE THERMISTOR
HEAT EXCHANGER
POWER BOARD
TERMINAL BLOCK
MOTOR COVER
GUIDE VANE
ARM
FAN GUARD
WIRERLESS ADAPTER CONTROLLER BOARD
CONTROLLER COVER
CONTROLLER CASE
TERMINAL COVER
ELECTRICAL PARTS COVER
SENSOR HOLDER

MF

RT2

MV

I.B

F1,F2

TB2

C

RT1

P.B

TB4

W.B

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

10

2
1
1
1
1
1
1
1

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

10

2
1
1
1
1
1
1
1

3P(L, N, ;)

2.0= ✕440V

2P(1, 2)

250V 6.3A

PM4V30-K

PK-1.6GKL
PK-2GKL

4

6

5

19

2

25

8

10

23

24

15

10

12

11

1

22

26

44

7

9

30

14

1

18

31

20

28

3

17

29

16

21

13

27

STRUCTURAL PARTS

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18

FRONT PANEL
AIR FILTER
SCREW CAP
CORNER COVER
CORNER COVER
BOX ASSEMBLY
BACK PLATE
UNDER COVER
FRONT GRILLE
VANE SLEEVE
AUTO VANE
WIRELESS REMOTE CONTROLLER
WIRELESS REMOTE CONTROLLER DOOR
BATTERY COVER
WIRELESS REMOTE CONTROLLER HOLDER
RECEIVING UNIT
REMOTE CONTROLLER
REMOTE CONTROLLER COVER

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

No.

Parts No.

Parts Name

Specifications

1.6 / 2
GKL

PK-

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

Recom-

mended

Q'ty

Unit

Amount

Price

R01 89Y 651
R01 A16 500
R01 07Y 096
R01 09Y 658
R01 07Y 658
R01 07Y 635
R01 07Y 808
R01 07Y 623

R01 07Y 691
R01 07Y 092
R01 07Y 002
T7W E04 714
T7W E01 049
R01 07Y 050
R01 07Y 075
R01 24K 658
T7W E04 713
T7W E03 049

RU

PK-1.6GKL
PK-2GKL

1

3

10

7

4

8

6

5

2

17

9

18

45

11

16

12

13 14

15

13

28˚C

26

˚C

8:00

Normal

operation

23:00

Setback

operation

8:00

Normal

operation

OPTIONAL PARTS

1. REFRIGERANT PIPES

Service Ref. : PK-1.6GKL, PK-2GKL

Part No. PAC-05FFS-E PAC-07FFS-E PAC-10FFS-E PAC-15FFS-E
Pipe length 5m 7m 10m 15m
Pipe size O.D .
Connection method Indoor unit: Flared Outdoor unit: Flared

Note 1. How to connect refrigerant pipes.

Factory supplied optional refrigerant pipings contain refrigerant at the above atmospheric pressures. As long as the
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 20m, an additional charge of refrigerant is needed.

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

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

Liquid:[9.52 Gas:[15.88

2. TIMER

When using a program timer, PAC-SC32PTA, a program timer adapter (PAC-825AD) are and a wired remote controller
(PAR-JA240KAT-E) also needed.

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

Model Name Program timer

2-1 Program timer specifications

Parts name Program timer
Parts No. PAC-SC32PTA
Exterior dimensions (inch) 5-4/32x4-23/32x23/32 (130x120x18mm)
Installation Wall mount
Type of clock Quartz
Clock accuracy ±50 second / month at 25°C

Display-Time

-Week

-Timer setting unit

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

Liquid crystal display
Liquid crystal display
Liquid crystal display

2-2 Feature of program timer

(1) Daily timer function

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

(2) Setback operation (PAC-SC32PTA)

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

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

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

46

SET/MONITOR

SET

SMTWTF S

MONITOR

PROERAN TIMER

PAC-SC32PTA

TODAY

ON

WEEKLY
SETTING

OFF

ON

SET BACK

OFF

CLOCK DAILY TIMER

SET BACK

SET BACK

DAILY

SETTING

12 15 18 21 24

0361215

FILTER

CHECK MODE

TEST RUN

Use 5-wire cable

2-wire cable

Connect to CN1 Connect to CN1

4

Connect to indoor unit

2-3 How to connect program timer

SET/MONITOR

SET

SMTWT F S

MONITOR

PROERAN TIMER

PAC-SC32PTA

TODAY

ON

WEEKLY
SETTING

OFF

ON

SET BACK

OFF

CLOCK DAILY TIMER

SET BACK

SET BACK

DAILY

SETTING

12 15 18 21 24

0361215

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

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

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

2-4 Names and functions

<PAC-SC32PTA>

WEEKLY TIMER SETTING DISPLAY

CURRENT TIME DISPLAY

SET BACK DISPLAY

DAILY TIMER SETTING DISPLAY

Used for selection of if or not the day opera­tion pattern set by PATTERN SETTING is to
be applied in weekly day unit, setting.

During MONITOR status,current
time is display.
During Daily timer setting, a
time desire for timer setting is

Indicates the setting set
back range.

24 hours is divided into 48 blocks and each

block express 30 minutes.

The block display consists of 3 pattern.

displayed.

Set back can be done in the range of 1,2,4,6
and 8°C.

SET BACK SETTING SW

SET/MONITOR DISPLAY

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

Used for set back setting.

ON/SET BACK/OFF SW

Used to specify the time setting pattern.

WEEK DAY SETTING SW

DAILY TIMER SW

Used for week day setting.

MODE SELECTOR SW

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

“MONITOR” :Indicates the current timer set-

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

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

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

CLOCK ADJUSTMENT SW

Used for adjustment of the current time.

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

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

3. TIMER ADAPTER

This adapter is needed for system control and for operation via external contacts. Adapter connection is described on page 37.

Used for timer setting in 30 minutes unit.

WEEKLY TIMER SW

Used for setting timer in day of week unit.

Pushing SW moves the week day light
display in order of
S → M → T → W
enabling to set the week day.

…

ORN 1
BRN
RED

Part No. PAC-SA89TA-E

2
3

47

4. MULTIPLE REMOTE CONTROLLER ADAPTER

This adapter is needed for remote indication (operation/check). Adapter connection is described on page 39.

Part No. PAC-SA88HA-E

1
2
3
4
5

BRN
RED
ORN
YLW
GRN

5. CENTRALIZED REMOTE CONTROLLER

Allows individual or combined control of up to 16 units. When using the PAC-805RC, the program timer adapter (PAC­825AD)is also needed.

Part No. PAC-805RC

Unit:mm

5-1 Dimensions

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

5-2 Functions

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

113

12

ENGAGED

GROUP

12345678910

GROUP
SELECTION

PROGRAM

ACTIVE BYPASS

TIMER
CONTROLLER

DUAL CENTRAL

OPERATION

23.5

BACK

ACTIVE
BYPASS

DUAL

CENTRAL

10 9 8 7 6 5 4 3 2 1

56.5
11

POWER
ON/OFF

AHEAD

8

113

POWER ON/OFF switch
Operation ON/OFF switch.

▲BACK ▼AHEAD buttons
These buttons are used to designate

DUAL/CENTRAL switch
This change-over switch governing the

operation of the accessory remote con­troller.

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

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

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

POWER
ON/OFF

AHEAD

BACK

ACTIVE

BYPASS

DUAL

CENTRAL

MITSUBISHI ELECTRIC

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 to the des­ignated units only.

ACTIVE/BYPASS switch
This is a change-over switch for the
program timer.
(It selects timer operation on the pro­gram timer.)
Use “BYPASS” when a program timer
is not connected.

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

“ACTIVE”
The switch turns ON/OFF operational
instructions from the program timer
automatically.
“BYPASS”
ON/OFF Operation is by the central­ized remote controller only.
Initial setting is “BYPASS”.

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

48

5-3 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-wrap.
Connect a single phase 200V AC (220, 230, 240V) to .

E

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-wrap.

Use a Ω1.6 (AWG 14) or above two-wire cable for the transmission line.

CAUTION : Never connect the power supply cord to the transmission terminal-block.

L N

TERMINAL-BLOCK
FOR TRANSMISSION

TERMINAL-BLOCK
OF POWER SUPPLY

Transmission

Tie-wrap

TRANSFORMER

LNE

Fuse(5A)

Tie-wrap

(W) (R) (O)

(BR)

200

220

230

T

(Y)

240

5A

L

N

E

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

(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.

To adaptor's
terminal-block

Power supply board box

POWER
SUPPLY

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

BACK

ACTIVE

BYPASS

DUAL

CENTRAL

10 9 8 7 6 5 4 3 2 1

POWER
ON/OFF

AHEAD

To adaptor's

Non-polar,
two-wire cable

terminal-block

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

Centralized remote
controller

2. Wiring diagram 3. Be sure to set the maximum address number with the

dip switch SW17 on the centralized remote controller.

BACK

ACTIVE
BYPASS

DUAL

CENTRAL

10 9 8 7 6 5 4 3 2 1

POWER
ON/OFF

AHEAD

Dip switch
SW17

Centralized
remote controller

Power supply
board

ENGAGED

GROUP

12345678910

ACTIVE BYPASS

DUAL CENTRAL

GROUP
SELECTION

PROGRAM
TIMER

CONTROLLER
OPERATION

49

6. PROGRAM TIMER ADAPTER

Length : 2m (6' 7")

Length : 2m (6' 7")

Length : 2m (6' 7")

This adapter is needed when a program timer(PAC-SC32PTA)or a centralized remote controller(PAC-805RC)is used.

Part No. PAC-825AD

6-1 Parts included

1 ADAPTER ·························1P 2 3-core cable···························1P

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

Length : 2m (6' 7")

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

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

6-2 Connection method

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

(1) Connections in the adapter box.

1. Connect the power supply cord to the terminal-block and fix it in-place with a tie-wrap.
Connect a single phase 200V AC (220, 230, 240V) to .
As is the GND terminal, be sure to ground the earth wire.

E

L N

2. Connect the transmission line to the transmission terminal-block and fix it in-place with a tie-wrap (when a
centralized remote controller is being used).
CAUTION : Never connect the power supply cord to the transmission terminal-block

Fig.1 Fig.2

TERMINAL-BLOCK
FOR
TRANSMISSION

Tie-wrap

Transmission cord

CN22

Dip switch

TRANS

CN1 CN21 CN51 CN30 CN42 CN50 CN40

Fuse(5A)

TRANSFORMER

(AG)

SW1

LNE

POWER SUPPLY CORD

TERMINAL-BLOCK
FOR POWER
SUPPLY

Tie-wrap

Terminal block for
transmission to
program timer or
centralized remote
controller

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

(W)

CN22

TRANS

(B)

200

SW1

T

(Y)

240

220

5A

L
N

;

(2) When the centralized remote controller is used, set the address number with the dip switch SW1 of the

program timer adapter.

POWER
SUPPLY

50

(3) Connections from adaptor

Fig.3

To program timer or
centralized remote
controller

Adaptor

CN30 CN50

200~240V AC

6-3 Dimensions

Fig. 4

35

3-core cable 5-core cable

CN51

Remote controller Indoor unit

Max. length of each calbe is 10m.

40 80 40 27 18

220

Fixing screw hole

95

4- 5.5

22

12

74
7

8

120

2 2- 2.9

30

200

86 70
22

27

52

(Unit : mm)

65

15

15

hole

35

15

230

7. Wired remote controller and terminl bed for remote controller

Part No. PAR-JA240KAT-E

8. Remote Sensor

Part No. PAC-SE41TS-E

51

1 Installation manual

This sheet 1 sheet 1 pc

1 pc 1 pc A 1pc B 1pc C 1pc D 1pc

1 pc 1 pc

5 Pipe cover (Liquid pipe) 6 2-core cable (12m) 7 Joint pipe

2 Gas pipe 3 Liquid pipe 4 Pipe cover (Gas pipe)

10. MULTI DISTRIBUTION PIPE FOR TWIN (50:50)

Tag

ID {15.88

ID {19.05

(indoor unit side)

ID {9.52

ID {9.52

(indoor unit side)

(outdoor unit side)

(outdoor unit side)

Model indication

A

C

B

Indoor unit side

Outdoor unit side

Outdoor unit

Indoor unit

Indoor unit

Distribution pipe
(Packed part)

H

h

Part No.

Applicable Service Ref.

10-1 Parts included

• The gas pipe 2 and liquid pipe 3 are specified as shown below.
2 Gas pipe 3 Liquid pipe

SDD-50S-E
Indoor unit : PK-1.6GKL, 2GKL
Outdoor unit : PU-3,4 type

After cutting the pipe with the pipe cutter,
deburr the pipe and clean off dirt and foreign
materials.

Combination of indoor/outdoor unit

Distributor pipe model

Outdoor unit

The following items must be obtain locally in
addition to the packed parts.
a Heat insulating sealing tape.

PU-3
PU-4

b Extension pipe for refrigerant pipe.

10-2 Pipe size and refrigerant pipe limits.

Outdoor unit

Gas side

Outdoor unit side Indoor unit side Outdoor unit side Indoor unit side

PU-3 type
PU-4S type

{15.88<5/8>
{19.05<3/4>

Note1. The number of bends in the refrigerant pipe is respectively 8 or less in the range of <A+B> <A+C>

Pipe size (mm) Actual piping leng <m>

Liquid side

{15.88<5/8> {9.52<3/8> {9.52<3/8>

Indoor ~

Outdoor
A+B=
A+C=
30m or less

Indoor ~
Indoor

|B-CI=

8m or less

Indoor ~
Outdoor

H=20m

SDD-50S-E

Indoor unit

1.6 + 1.6
2 + 2

Height deffence <m>

Indoor ~
Indoor

h=1m

or less

(Note 1)
No. of bend

or less less than 8

52

10-3 Pipe connection

Control cable Prepared by site

0.8mm or more

Enclosed with

optional distribu-

tor pipe. (12m)

DC12V

Not designated

0.3mm

2

or more

Enclosed with

the optional

remote controller.

Control circuit voltage

Cable thickness

Polarity

A6C

(1) Note the following during work:

• Be sure to recheck the combination <Table1> and pipe size
<Table2> of the outdoor/indoor units.

• Observe the refrigerant pipe length limits and no of bend limits
<Table2>.

• Insert the refrigerant pipe (obtain locally) into the flared end of the
distributior pipe (packed) until the former pipe stops.
Use oxidization-free solder for connection when possible.

• The installation of the distributor pipe (packed) is not regulated.

• Take care to prevent dirt, foreign materials, etc., from entering the
pipe when connecting the pipe.

• After checking remove the tag from the liquid pipe 3.

(2) Piping connection

• When welding the piping, use the exclusive joint 7 as the diame­ters of the pipe on the outdoor unit side and the joint section differ.
(Refer to the table on the right.)

10-4 Heat insulating work

Gas pipe Liquid pipe

Do not bend or expend any distributor pipe

(Liquid pipe)

Gas side

•Outdoor unit PU-3type / PU-4type

Joint pipe A / B

ID {15.88 / 19.05

Liquid side

•Outdoor unit PU-3type, PU-4type

ID {9.52

Joint pipe C

• Install the gas pipe 2 while aligning it with the pipe cover

4. Seal the joint area of the pipe cover 4 with heat insulat­ing sealing tape (obtain locally).

Note:

1. Cover the entire refrigerant pipe (obtain locally) with heat insulating material If connercial heat insulating meterial is used,
it must be 12mm or thicker.

2. As the pipe covers 4 and 5 will shrink slightly due to the high temperature, allow a lap when installing the heat insulat­ing material.

10-5 Control wiring for indoor unit

• Connect the control cables of the indoor units Nos. 1 and 2 with the enclosed 2-core cable (12m) 6.

• Connect the 2-core cable 6 to the remote controller terminal in the electrical box of each indoor unit and tighten the screws.
(The polarity is not designated.)

Specifications of each control cable

Indoor unit No.1

Terminal

Terminal block
block for
control

12 12 12

for remote

controller

Indoor unit No.2

Terminal block

for remote

controller

A

Remote

controller

c

6

12

Terminal
block for
control

Outdoor unit

53

• Install the liquid pipe 3 while aligning it with the pipe cover

5. Seal the joint area of the pipe cover 5 with heat insulat­ing sealing tape (obtain locally).

Twin Setting

1 Set DIP switch SW6.
2 Remove the short-circuit connector CN40. (Leave it con-

nected to the No.1 unit.)

No.1 unit

SW6 Twin type

CN40 connector Leave it connected. Disconnect.

OFF

ON

4

321 4

No.2 unit

OFF

ON

321

Note 1: SW6 default settings are all OFF.
Note 2: The short-circuit connector CN40 is connected by

factory.

HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO

cCopyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Issued in Aug. 2000. NO.OC230 325
Printed in Japan

New publication, effective Aug. 2000
Specifications subject to change without notice