Mitsubishi PS-3GJA1, PS-4GJSA1 Service Manual

SPLIT-TYPE AIR CONDITIONERS

ADVANCED AND EVER ADVANCING

TECHNICAL & SERVICE MANUAL

1997

No. OC141

Floor StandingSeries PS

Indoor unit [Model names]

PS-3GJA PS-4GJSA

[Service Ref.]

PS-3GJA PS-4GJSA

1

This manual does not cover the following outdoor units. When serving them, please refer to the service manual No. OC149 and this manual in a set.

[Service Ref.] PU-3VJA PU-3YJA PU-3NJA PU-4VLJSA PU-4YJSA PU-4TJSA

CONTENTS

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

2. PART NAMES AND FUNCTIONS ......3

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

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

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

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

7.

REFRIGERANT SYSTEM DIAGRAM

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

9. MICROPROCESSOR CONTROL .....17

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

11. DISASSEMBLY PROCEDURE .........27

12. PARTS LIST......................................30

13. OPTIONAL PARTS ...........................34

2.UK

1.UK

2.UK

1.UK

..13

The Slim Line. From Mitsubishi Electric.

1 FEATURES

i

.

Floor StandingSeries PS

(The controller is built in the indoor unit)

Indoor unit

controller

Service Ref. Cooling capacity/50/60Hz

W Btu/h

PS-3GJA PS-4GJSA

Rating condition (JIS B8616)

Indoor : 27°CDB, 19°CWB Outdoor : 35°CDB, 24°CWB

1 7,200/7,900 24,600/27,000

1 9,800/10,900 33,400/37,200

1. OPTIMAL PERFORMANCE AND EFFICIENT MAINTENANCE

(1) PEACEFUL SILENCE THROUGH WHISPER-QUIET OPERATION

This top quality floor-standing model guarantees near-silent operation through a newly developed low-noise fan. Air-duct design has also been optimized through the adoption of microslit fans. Perfect for shops and office meeting-rooms.

(2) LONG LIFE FILTER

The long life filter allows 2,500 hours of maintenance-free operation in office environments not so dusty.

(3) SMOOTH REMOVAL

An open grill system permits filters to be removed smoothly and easily.

(4) EASY CLEANING

Dirt can be cleaned off simply because vanes are flockless.

2. INSTALLATION TIME GREATLY REDUCED

(1) EFFECTIVE PIPE CONNECTION

Raising the pipe connection position facilitates pipe arrangement, thus shortening installation time.

(2) CONVENIENT WIRING

A raised wire connection position means that wiring work can be conveniently implemented.

(3) WEIGHT REDUCTION

The use of plastics as assembly materials has realized a reduction in weight of 22kg. (PS-5 GJSA 72kg ➔ 51kg)

(4) PIPE DIRECTIONS

Pipes can be installed in four directions (rear, left, right, and bottom sides.)

2

PART NAMES AND FUNCTIONS2

Disperses air up and down

Disperses air left and right.

Removes dust and pollutants from inhaled air.

(Inhales air from room.)

● Indoor (Main) Unit PS-3GJA

PS-4GJSA1

1

3

● Controller

i

.

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

TIMER/TEMP. button

This button is used to

change between display of room temperature and

display of remaining time

on the timer during “AUTO

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

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

Lamps indicate time remaining

until timer stops operation. Green lamps display the

remaining number of hours.

Room temperature display

Lamps display temperature

settings actual room

temperatures.

●Temperature settings :

Green lamps light.

●Temperature in room :

Green lamps flash.

(Example display readings are

for explanations only, so actual

display readings will differ.)

Display panel

Operating panel

UP and DOWN buttons

●Temperature control (While green “TEMP” lamp

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

●Timed operation (While green “TIMER“ lamp is

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

ON/OFF button

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

MODE SELECT button

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

FAN SPEED button

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

LOUVER button

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

TIMER MODE button

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

Attention

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

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

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

4

SPECIFICATIONS3

Cooling capacity W1

Total input (50/60Hz) Indoor

unit

Cooling capacity (SSA) W2

Outdoor

unit

Service Ref.

External finish Fan motor output

Airflow Hi-Lo

External static pressure Operation control & Thermostat

Noise level High-Low

Cond. drain connection O.D.

Dimensions

Weight

Service Ref.

External finish Refrigerant (R-22) control

Crankcase heater Compressor output Protection devices Fan motor output

Air flow

Noise level

Dimensions

Weight

50Hz

60Hz

50Hz

60Hz

50Hz 60Hz

H

W

D

60Hz

50/60Hz

50Hz 60Hz

50/60Hz

W

D H

W

Btu/h

W

Btu/h

kW

m

3

/min

CFM

m

3

/min

CFM

mmAq,Pa

dB (A)

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

kg (lbs)

W

Btu/h

W

kW

m

3

/min(CFM)

m

3

/min(CFM)

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

kg (lbs)

Service Ref.

Item

7,200

24,600

7,900

27,000

6,800

23,200

3.32/3.60

Munsell 0.70 Y 8.59/0.97

PS-3GJA

1 PS-4GJSA1

0.03

17 -14

600 - 494

17 -14

600 - 494

0 (Direct blow)

Built-in 42 - 37 42 - 37

26(1)

1900(74 - 13/16)

600(23 - 5/8) 270(10 - 5/8)

43(95)

Munsell 5Y 7/1

Capillary tube

PU-3VJA2.UK,3YJA2.UK,3NJA1.UK

PU-4VLJSA2.UK,4YJSA2.UK,4TJSA1.UK

32/32

2.2 W5

0.085 50 (1765) 50 (1765)

52/53

870 (34-1/4)

295(11 - 5/8)

850 (33-7/16)

73 (161)

PS-4GJSA

1

9,800 33,400 10,900 37,200

9,400 32,000

3.57/4.53

0.07

28 - 22

988 - 776

30 - 22

1059 - 776

47 - 42 48 - 42

26(1)

1900(74 - 13/16)

600(23 - 5/8) 350(13 - 3/4)

51(112)

32/32

2.7

0.065 + 0.065 95 (3352) 95 (3352)

54/55

870 (34-1/4)

295(11 - 5/8)

1,258 (49-1/2)

94 (207)

PS-3GJA

1

1. STANDARD SPECIFICATIONS

Notes :

W1 Rating conditions (JIS B8616) W4 Capacity of crankcase heater (W) based on 220 volts.

Indoor : 27°C (80°F) DB, 19°C (66°F)WB W5V, N Outdoor : 35°C (95°F) DB, 24°C (75°F)WB T, Y Refrigerant piping length (one way) : 5m (16ft) Thermal relay (PU-3YJSA

W2 Rating conditions (SSA 385, 386) VL

Indoor : 29°C (84°F) DB, 19°C (66°F)WB Thermal switch. Outdoor : 46°C (115°F) DB, 24°C (75°F)WB

W3 Total input bassed on indicated voltage

Service Ref.

50Hz 60Hz

PS-3GJA1

1ph 220V/1ph 220V 1ph 220V/1ph 220V

(Indoor / Outdoor)

PS-4GJSA1

1ph 220V/3ph 380V 1ph 220V/3ph 220V

...

Inner thermostat, HP switch, LP switch.

...

Thermal switch, Reversed-phase protector, HP switch, LP switch,

...

Inner thermostat,HP switch,LP switch

2, PU-4YJSA2, PU-4TJSA2)

5

2. POWER SUPPLY & MODEL NAMES

50Hz

60Hz

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

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

PU-3VJA

2.UK

PU-3YJA2.UK PU-3NJA1.UK

—

PU-4VLJSA

2.UK

PU-4YJSA2.UK

—

PU-4TJSA

1.UK

PS-3GJA1 PS-4GJSA1

Service Ref. (Indoor unit)

Service Ref. (Outdoor unit)

Power supply

Service Ref.

Current Input Starting current Outdoor unit

A

kW

A

V : 220V 50Hz

PS-3GJA

1

0.64

0.14

0.8

PU-3

PS-4GJSA

1

1.02

0.22

1.5

PU-4

V : 230V 50Hz

PS-3GJA

1

0.66

0.15

1.5

PU-3

PS-4GJSA

1

1.06

0.24

1.5

PU-4

Power supply (1 Phase)

Service Ref.

Current Input Starting current Outdoor unit

A

kW

A

V : 240V 50Hz

PS-3GJA

1

0.68

0.16

0.8

PU-3

PS-4GJSA

1

1.10

0.26

1.5

PU-4

Power supply (1 Phase)

N : 220V 60Hz

0.73

0.16

0.8

PU-3

1.20

0.26

1.5

PU-4

PS-3GJA

1 PS-4GJSA1

Service Ref.

Current Input Starting current Outdoor unit

A

kW

A

N : 220V 60Hz

PS-3GJA

1

0.73

0.16

0.8

PU-3

PS-4GJSA

1

1.20

0.26

1.5

PU-4

Power supply (1 Phase)

Notes : 1. Power supply key N

.......

1ph, 220V,60Hz T

...

V(L)

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

2. Primary power supplies for all indoor units are single-phase. 50Hz, 4 wires

3. ELECTRICAL SPECIFICATIONS

(1). Rating conditions -JIS B 8616 Series PS Indoor Unit (Single Phase)

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

{

Outdoor : 35°C (95°F) DB

...

3ph. 220V, 60Hz

...

3ph. 380/220, 400/230, 415/240V,

(2). Rating conditions -SSA385,386

Series PS Indoor Unit (Single Phase)

6

Indoor : 29°C (84°F) DB, 19°C (66°F) WB

{

Outdoor : 46°C (115°F) DB,24°C (75°F) WB

DATA4

Indoor WBOutdoor DB

PS-3GJA

1

T.C.

C.F.

(T.I.)

PS-4GJSA

1

T.C.

C.F.

(T.I.)

Service Ref.

Temperature

16$C 18$C 19$C

19.4$C 20$C 22$C 16$C 18$C 19$C

19.4$C 20$C 22$C 16$C 18$C

19$C

19.4$C 20$C 22$C 16$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) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F)

(66.2$F)

(67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F)

7.2

7.7

7.9

8.0

8.2

8.7

7.1

7.5

7.8

7.9

8.0

8.5

6.8

7.3

7.5

7.6

7.7

8.2

6.7

7.1

7.4

7.5

7.6

8.1

6.5

7.0

7.2

7.3

7.4

7.9

6.2

6.7

6.9

7.0

7.1

7.6

6.2

6.6

6.9

7.1

7.6

5.9

6.4

6.6

6.7

6.8

7.3

5.9

6.3

6.5

6.6

6.7

7.2

5.6

6.0

6.2

6.3

6.5

6.9

5.5

5.9

6.1

6.2

6.3

6.8

0.81

0.82

0.83

0.84

0.86

0.84

0.85

0.86

0.87

0.89

0.90

0.92

0.93

0.94

0.96

0.93

0.95

0.96

0.97

0.99

0.96

0.99

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.11

1.04

1.06

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

9.8

10.5

10.8

10.9

11.1

11.8

9.6

10.2

10.6

10.7

10.9

11.6

9.3

9.9

10.2

10.3

10.5

11.2

9.1

9.7

10.0

10.2

10.3

11.0

8.9

9.5

9.8

9.9

10.1

10.8

8.5

9.1

9.4

9.5

9.7

10.3

8.4

9.0

9.3

9.5

9.6

10.3

8.1

8.6

8.9

9.1

9.3

9.9

8.0

8.6

8.9

9.0

9.2

9.8

7.6

8.2

8.5

8.6

8.8

9.4

7.4

8.0

8.3

8.4

8.6

9.2

0.81

0.82

0.83

0.84

0.86

0.84

0.85

0.86

0.87

0.89

0.90

0.92

0.93

0.94

0.96

0.93

0.95

0.96

0.97

0.99

0.96

0.99

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.11

1.04

1.06

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

21$C (69.8$F)

25$C (77$F)

30$C (86$F)

32.2$C (90$F)

35$C (95$F)

40$C (104$F)

40.6$C (105$F)

45$C (113$F)

46$C (115$F)

50$C (122$F)

52$C (125.5$F)

17

0.10

0.70

28

0.16

0.76

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

PS-3GJA1 PS-4GJSA1

Refrigerant piping Iength (one way)

5m (16ft)

1.0

10m (33ft)

0.978

0.984

5m (49ft)

0.962

0.974

20m (66ft)

0.948

0.964

25m (82ft)

0.934

0.954

30m (98ft)

0.921

0.944

35m (115ft)

—

0.935

40m (131ft)

—

0.926

45m (148ft)

— —

Service Ref.

1. PERFORMANCE DATA

Cooling capacity

50Hz

Notes : 1. T.C. : Total capacity ( ✕ 103W)

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)

...

(Btu / h)

. =

. (W) ✕ 3.4, (kcal / h) = (W) ✕ 0.86

Lower limit ... Indoor : 21°C (70°F) DB, 15.5°C (60°F) WB, Outdoor : 21°C (70°F) DB.

{

Upper limit

50Hz

...

Indoor : 35°C (95°F) DB, 22.5°C (72.5°F) WB, Outdoor : 52°C (125.5°F) DB.

WVL

...

Outdoor : 46°C (115°F) DB.

7

Cooling capacity

60Hz

Service Ref.

Temperature

Indoor WBOutdoor DB

21$C (69.8$F)

25$C (77$F)

30$C (86$F)

32.2$C (90$F)

35$C (95$F)

40$C (104$F)

40.6$C (105$F)

45$C (113$F)

46$C (115$F)

50$C (122$F)

52$C (125.5$F)

16$C 18$C 19$C

19.4$C 20$C 22$C 16$C 18$C 19$C

19.4$C 20$C 22$C 16$C 18$C

19$C

19.4$C 20$C 22$C 16$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) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F)

(66.2$F)

(67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F) (71.6$F) (60.8$F) (64.4$F) (66.2$F) (67$F) (68$F)

(71.6$F)

Evaporator airflow (CMM)

Bypass factors

S.H.F. at rating conditions

Notes : 1. T.C. : Total capacity ( ✕ 103W)

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)

...

(Btu / h)

PS-3GJA

T.C.

7.9

8.4

8.7

8.8

9.0

9.5

7.8

8.3

8.5

8.6

8.8

9.4

7.5

8.0

8.2

8.3

8.5

9.0

7.3

7.8

8.1

8.2

8.3

8.9

7.2

7.6

7.9

8.0

8.2

8.7

6.8

7.3

7.6

7.7

7.8

8.3

6.8

7.3

7.5

7.6

7.8

8.3

6.5

7.0

7.2

7.3

7.5

8.0

6.4

6.9

7.1

7.2

7.4

7.9

6.2

6.6

6.9

7.1

7.6

6.0

6.5

6.7

6.8

6.9

7.4

. =

. (W) ✕ 3.4, (kcal / h) = (W) ✕ 0.86

Lower limit ... Indoor : 21°C (70°F) DB, 15.5°C (60°F) WB, Outdoor : 21°C (70°F) DB.

{

Upper limit

1

C.F.

(T.I.)

0.81

0.82

0.83

0.84

0.86

0.84

0.85

0.86

0.87

0.89

0.90

0.92

0.93

0.94

0.96

0.93

0.95

0.96

0.97

0.99

0.96

0.99

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.11

1.04

1.06

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

17

0.10

0.69

...

Indoor : 35°C (95°F) DB, 22.5°C (72.5°F) WB, Outdoor : 52°C (125.5°F) DB.

1.31

T.C.

10.9

11.7

12.0

12.2

12.4

13.1

10.7

11.4

11.8

11.9

12.1

12.9

10.3

11.0

11.3

11.5

11.7

12.5

10.1

10.8

11.2

11.3

11.5

12.3

10.5

10.9

11.0

11.3

12.0

10.1

10.4

10.6

10.8

11.5

10.0

10.4

10.5

10.7

11.4

10.0

10.1

10.3

11.0

10.0

10.2

10.9

10.5

10.3

9.9

9.4

9.0

9.6

8.9

9.5

9.9

8.5

9.1

9.5

9.6

9.8

8.3

8.9

9.2

9.4

9.6

PS-4GJSA

1

30

0.16

0.74

C.F.

(T.I.)

0.81

0.82

0.83

0.84

0.86

0.84

0.85

0.86

0.87

0.89

0.90

0.92

0.93

0.94

0.96

0.93

0.95

0.96

0.97

0.99

0.96

0.99

1.00

1.01

1.04

1.03

1.06

1.07

1.08

1.11

1.04

1.06

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

Cooling capacity correction factors

Service Ref.

PS-3GJA1 PS-4GJSA1

8

5m (16ft)

1.0

10m (33ft)

0.971

0.980

60Hz

5m (49ft)

0.950

0.966

Refrigerant piping Iength (one way) 20m (66ft)

0.931

0.952

25m (82ft)

0.913

0.939

30m (98ft)

0.896

0.926

35m (115ft)

—

0.914

40m (131ft)

—

0.902

45m (148ft)

— —

Mode

Total

Electrical circuit

Refrigerant circuit

Indoor unit

Outdoor

unit

Capacity

Input

Indoor unit Service Ref.

Phase, Hz

Volts

Amperes

Outdoor unit Service Ref.

Phase, Hz

Volts

Amperes

Discharge pressure

Suction pressure

Discahrge temperature

Condensing temperature

Suction temperature

Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

W

kW

$C

m

DB$C

WB$C

DB$C

WB$C

PS-3GJA

1

Cooling

7,200

3.32

PS-3GJA

1

1, 50

220

0.64

PU-3VJA

2.UK

1, 50

220

15.1

61.5

2.6

5.8

5

27

19

12.3

35

24

Cooling

7,900

3.60

1, 60

220

0.73

PU-3NJA

1.UK

1, 60

220

17.6

70.1

5.5

4.0

5

27

19

11.5

35

24

PS-4GJSA

1

Cooling

9,800

3.57

PS-4GJSA

1

1, 50

220

1.02

PU-4YJSA

2.UK

3, 50

380

5.7

64.9

48.9

6.3

5

27

19

14.1

35

24

Cooling

10,900

4.53

1, 60

220

1.20

PU-4TJSA

1.UK

3, 60

220

12.2

75.0

52.0

4.9

5

27

19

14.6

35

24

Service Ref.

V

A

V

A

MPa·G

(Of/F·G)

MPa·G

(Of/F·G)

2.0

(20.4)

2.14

(21.8)

1.83

(18.7)

1.99

(20.3)

0.47 (4.8)

0.45 (4.6)

0.50 (5.1)

0.47

(4.8)

3. STANDARD OPERATION DATA

PS-3GJA1

PS-4GJSA1

Outdoor unit precharged (kg)

(up to 20)

V…3.08,Y…2.88,N…3.5

VL…3.8,Y…4.6, T…4.6

0.06(0.13)

0.15(0.33)

0.12(0.26)

0.30(0.66)—0.45(0.99)—0.6(1.32)

— —

25m(82ft) 30m(98ft) 35m(115ft) 40m(131ft) 45m(148ft)

Piping length(one way)

20m(66ft)

0 0

Service Ref.

Standard

Air flow m3/min

Air speed m/sec

Coverage range m

PS-3GJA

1

17

2.6

8.4

PS-4GJSA

1

28

4.2

13.6

The unit or pressure has been changed to Mpa based on the international SI system. The conversion factor is :

4. ADDITIONAL REFRIGERANT CHARGE (R-22 : kg (Ibs))

5. OUTLET AIR SPEED AND COVERAGE RANGE

1(Mpa·G)=10(Of/F·G)

9

5 OUTLINES AND DIMENSIONS

125

240

Front side

Metal fixture

against overturning

controller

Rear side

Front side

Rear side

Knock out hole

for branch duct

Knock out hole

for bottom fixing

Knock out hole

for under-piping

Knock out hole for

under-piping(120 70 oval)

100

10 3838

50260

130130

766

1900

608

50

115

714 123

767

110

480

590

216

40

82730

2010

111

15

130

132

277

160

20

218

175

90

55143

100

340

370

520

260

240

130 71

530

600

270

250

70

180

235

Knock out hole for

wiring. 27

(Provided on both sides)

Knock out hole for refrigerant and drainage.

90 60 oval (Provided on both sides)

Knock out hole for piping and wiring

(140 80 oval)

20

105

Terminal block

for control

Electrical parts box

Liquid pipe 9.52(3/8F)

1. Service access allows for

insertion of screw driver.

2. Adjustable

Gas pipe 15.88(5/8F)

Drain pipe

Terminal block

for power supply

95

46122

47

95

40 66

186

100 or more 100 or more

2

5 or more

1

300 or more

Front 1,000 or more

1. INDOOR UNIT PS-3GJA

1

Unit : mm

10

PS-4GJSA1

125

240

Front side

Metal fixture

against overturning

controller

Rear side

Front side

Rear side

Knock out hole

for branch duct

Knock out hole

for bottom fixing

Knock out hole

for under-piping

Knock out hole for

under-piping(120 70 oval)

100

10 3838

50260

130130

766

1900

608

50

115

714 123

767

110

480

590

216

40

82730

2010

111

15

130

132

277

120

20

218

255

140

77

201

120

340

370

520

260

240

130 71

530

600

350

330

70

260

315

Knock out hole for

wiring. 27 (Provided on both sides)

Knock out hole for refrigerant and drainage.

90 60 oval (Provided on both sides)

Knock out hole for piping and wiring

(140 80 oval)

20

105

Terminal block

for control

Electrical parts box

Liquid pipe 9.52(3/8F)

1. Service access allows for

insertion of screw driver.

2. Adjustable

Gas pipe 19.05(3/4)

Drain pipe

Terminal block

for power supply

95

46122

47

95

40 66

261

100 or more 100 or more

2

5 or more

1

300 or more

Front 1,000 or more

Unit : mm

11

6 WIRING DIAGRAM

N

L

TWIN-1TWIN-2

CN2ACN2B

OFF

ON

GRN/YLW

I.B

TB2

TO OUTDOOR UNIT CONNECTING WIRES DC12V(non-polar)

21

T

ML

X6 X5 X4

ZNR

FUSE1

X2

FUSE2

C

MF

CNR120

LD7LD8

SW7

SW6

SW5

SW8

SW4

SW3

SW2

SW1

LD12

LD11

LD6

LD10

LD5

LD4

LD9

LD3

LD1

LD24

LD23

LD22

LD21

LD20

LD19

LD18

LD17

LD16

LD15

LD14

LD13

CN31

HEATER

123

CN2

TIMER

12345

CN50

DRAIN

CN20

INTAKE

12

CN21

PIPE

1

12

L.TEST

CN28

CN120

TO.RC

OUTDOOR

CN30

123

TRANS

CN4T

1234

CNT

TRANS

31

CND

POWER

31

CNL

LOUVER

317531

SW1

MULTIPLE

CN51

RT1

RT2

12

OFF

ON

SW3

SW2

FAN1

POWER SUPPLY ~ (1 PHASE) AC220 ~ 240V 50Hz AC220V 60Hz

YLW/GRN

YLW

ORN

RED

10.6VAC

14.5VAC

WHT

220V 230V

YLW

BG79N700H01

R.B

TB1

ORN

RED

ORN YLW

BRN

RED

240V

BLU

BRN

YLW

WHT

YLW

BLU

BLK

12

PS-3GJA1, PS-4GJSA1

SYMBOL

C

CN2<I.B> CN2A<I.B> CN2B<I.B> CN28<I.B> CN51<I.B>

FUSE1,2<I.B>

I.B LD1<R.B> LD3<R.B> LD4<R.B> LD5<R.B> LD6<R.B> LD7<R.B> LD8<R.B>

INDOOR FAN MOTOR CAPACITOR

NAME

TIMER ADAPTOR CONNECTOR TRANSMISSION WIRES No.1 CONNECTOR TRANSMISSION WIRES No.2 CONNECTOR TIME SHORTENING CONNECTOR MULTIPLE CONNECTOR FUSE<6.3A> INDOOR CONTROLLER BOARD RUN INDICATOR LED COOLING INDICATOR LED HEATING INDICATOR LED FAN HIGH INDICATOR LED LOUVER ON INDICATOR LED TEMPERATURE MODE TEMPERATURE LED TIMER MODE INDICATOR LED

SYMBOL

LD9<R.B> LD10<R.B> LD11<R.B> LD12<R.B>

LD13~24

<R.B>

MF ML R.B

RT1

RT2

SW1<I.B>

SW2<I.B>

SW3<I.B> SW1<R.B>

DRY INDICATOR LED

NAME

FAN LOW INDICATOR LED OFF TIMER INDICATOR LED ON TIMER INDICATOR LED TEMPERATURE/TIMER REMAINING TIME INDICATOR LED INDOOR FUN MOTOR LOUVER MOTOR CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR (0˚C/15k1, 25˚C/5.4k1 DETECT) INDOOR COIL THERMISTOR (0˚C/15k1, 25˚C/5.4k1 DETECT) FUNCTION SWITCH UNIT SWITCH EMERGENCY OPERATION SWITCH ON/OFF SWITCH

SYMBOL SW2<R.B> SW3<R.B> SW4<R.B> SW5<R.B> SW6<R.B> SW7<R.B> SW8<R.B>

T TB1 TB2

X2<I.B>

X4,X5,X6<I.B>

ZNR

OPERATION MODE SWITCH

NAME

FAN SPEED SWITCH LOUVER ON/OFF SWITCH DISPLAY SWITCH RAISES SET TEMPERATURE/TIMER SWITCH LOWERS SET TEMPERATURE/TIMER SWITCH TIMER MODE SWITCH TRANSFORMER POWER SUPPLY TERMINAL BLOCK INDOOR/OUTDOOR CONNECTING WIRE TERMINAL BLOCK LOUVER MOTOR RELAY INDOOR FAN RELAY VARISTOR

NOTES :

1. Since the indoor transformer (T) is connected with 220V power, if 230,240V power is used. Change the wiring connection showing fig : W1.

fig : W1

When power supply is

230V 240V

220V 230V

240V

RED ORANGE

YELLOW

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

[Check items]

[Emergency operation procedure]

(1) Compressor and fan. (2) Check the trouble position using self diagnostic function. If the result of self diagnosis indicates protective device such as freeze protection is functioning,

emergency operation is not possible unless the cause is removed.

(1) Set the dip switch (SW3<I.B>) on the indoor controller board to 1 • 2 on and 3 off for cooling.

Emergency operation will be continuous operation mode due to power ON/OFF (ON/OFF with remote controller is not possible).

(2) Turn on outdoor unit side circuit breaker, and then indoor unit side circuit breaker in this order. (3) During emergency operation, the indoor fan runs on high speed but swing louver remains stop. (4) Thermostat will not function. (5) Emergency cooling should be limited to 10 hours maximum (the indoor unit heat exchanger may freeze.)

12

REFRIGERANT SYSTEM DIAGRAM7

Indoor heat exchanger

Distributor with strainer

Outdoor heat exchanger

(With insulator) option

Ball valve (with service port)

Flared connection

Flexible tube

Compressor

flow of refrigerant

wSize of capillary tube for injection

w

Capillary tube

Capillary tube for injection

Flared connection

Low pressure switch

High pressure switch

Refrigerant pipe

15.88 (5/8F)

(With insulator) option

Refrigerant pipe

9.52 (3/8F)

Strainer

OUTDOOR UNIT

PS-3GJA

1

PS-3GJA

(With insulator) option

Refrigerant pipe

19.05 (3/4F)

PS-4GJSA

1

PU-3JA PU-4JSA

Ball valve

Check plug

Charge plug

Accumulator

Only PU-3NJA,3VJA 3YJA,4TJSA,4YJSA

PU-3 (O.D.3.2 o I.D.1.8 -R800) o 2pcs

PU-3VJA O.D.3.2 o I.D. 2.0 - R 520 PU-3YJA O.D.3.2 o I.D. 1.4 - R 800 PU-3NJA O.D.3.2 o I.D. 1.6 - R 500 PU-4YJSA/4TJSA O.D.3.2 o I.D. 1.2 - R 500

PU-4 (O.D.3.2 o I.D.2.0 -R840) o 2pcs

INDOOR UNIT

PS-3GJA1/PU-3VJA2.UK,PU-3YJA2.UK,PU-3NJA1.UK PS-4GJSA

1/PU-4VLJSA2.UK,PU-4YJSA2.UK,PU-4TJSA1.UK

13

8 OPERATION FLOW-CHART

1

Start

POWER SUPPLY

Live

ON/OFF

button ON

TIMER MODE

button ON

During

operation

AUTO STOP lamp ON AUTO START lamp ON

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

Abnormal

operation mode

MODE SELECT

button

EMERGENCY

ALL STOP

STOP

Self-diagnostic function

Indicate & Memory

Protection device

Self hold

Protection device

Self hold reset

COOL OPERATION

DRY OPERATIONFAN OPERATION

POWER lamp ON

NO

DRYFAN

COOL

YES

YES YES

YES

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

Set time Elapsed time=0

Models : PS-GJA

1. Main operation

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

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

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

●Outdoor unit abnormal operation.

●Fault of room temperature thermistor (RT1).

●Fault of indoor coil thermistor (RT2).

●Indoor coil frost protection mode.

Refer to page 25 for abnormal operation mode details.

Note 4. The compressor will not start for 3 minutes after the stop.

14

1

3-minute

time delay

Compressor start

3 minutes elapse

Compressor

start 10 minutes

elapse

Compressor

start 16 minutes

elapse

6-minute

time delay

Coil frost

protection

Coil frost

prevention

Indoor coil

temperature

1$C or below

Indoor coil

temperature 10$C

or more

3-minute time delay

Coil frost

prevention release

Coil frost

prevention set

Range C

Allowance release

Compressor ON Compressor OFF

NO

YES

NO

COOL operation

Compressor

thermostat ON

Allowance release

Allowance

Allowance set

6-minute time delay

Coil frost

protection

check mode

Continue

1 minute

Fan speed LOW

5 minutes elapse

Outdoor unit abnor-

mality check mode

2. COOL operation

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

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

15

1

DRY operation

FAN operation

Compressor ON

Compressor OFF

10 minutes completed

Compressor ON

3 min.elapse

Compressor

thermostat ON

Compressor

thermostat ON

Compressor ON

time completed

FAN speed

button HIGHT

Fan stop

Compressor OFF

FAN speed HIGHT FAN speed LOW

Compressor ON

time set

Compressor ON

Fan speed LOW

Compressor OFF

10-minute timer start

Room temperature

18 C or below

NO

YES

3-minute

time delay

NO

YES

3. DRY operation

Note 8. When the room temperature is 18°C or below, the compressor can not turn ON. When the room temperature rises to

18°C or above, the compressor will start operation after a 3-minute time delay. Note 9. Refer to page 20 for the compressor operation time. Note 10. In DRY operation, the indoor fan runs on the low speed during the compressor ON and stops during the compressor

OFF.

4. FAN operation

16

MICROPROCESSOR CONTROL9

i

.

1.OUTLINE OF MICROPROCESSOR CONTROL

INPUT to controller

● OFF-ON switching.

● COOL/DRY-FAN selector switching.

● HIGH-LOW fan speed switching.

● Swing louvers SWING-FIXED switching.

● TIMER mode selector switching.

● Thermostat setting.

● Timer setting.

● Self diagnostic troubleshooting.

● Test run switching.

Indoor unit

CONTROLLER

● Transmits and receives orders.

12

12VDC

OUTPUT to controller

● Indication LED lights.

Polar, twelve (12) - core cable

INPUT from indoor unit

● Room temperature thermistor.

● Indoor coil thermistor.

OUTPUT to indoor unit

● Fan : ON - OFF.

● Fan speed : HIGH - LOW

● Swing louvers : ON-OFF.

● Emergency stop.

INPUT from outdoor unit

● Compressor protection device working

OUTPUT to outdoor unit

INDOOR CONTROLLER BOARD

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

● Processes orders and data.

● Transmits the power of indication LED to remote controller

● Controls indoor and outdoor operation.

● Self diagnostic function.

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

Non - polar, two (2) - core cable

Outdoor unit

12VDC

OUTDOOR UNIT

● Receives order from indoor controller.

● Emergency stop.

● Compressor motor and outdoor fan motor :

ON - OFF

17

2. INDOOR UNIT CONTROL

i

.

2-1 COOL operation

Operation starts by POWER button ON.

ON

Thermostat

OFF

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

3 Check lamp is ON and set desired temperature with UP

TEMP.

i ▼

or DOWN button.

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

TIMER

▼ w

to change the display to temperature mode.

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

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

Room temperature becomes equal to set temperature.

Room temperature rises above set temperature.

Operation stops by POWER button OFF.

LOW or HIGHLOW or HIGH

Indoor fan

Louver

Compressor

ON

OFF

ON

OFF

ON

OFF

Depends on remote controller setting

MIN. 3 minutes 1

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 the room temperature is higher than the set temperature.

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

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

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

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

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

● COOL mode is stopped or changed to another mode.

NOTE : By cutting the jumper wire JR02 on the indoor controller board, the temperature to start coil frost prevention

changes from 1°C to -3°C.

18

➄ Coil frost protection

i

.

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

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

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

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

(2) Indoor fan control

Indoor fan speed LOW/HIGH depends on the remote controller setting. However, if an outdoor unit abnormality is detected, the indoor fan speed will be LOW, regardless of the remote controller setting.

(3) Louver control

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

(4) Detecting abnormalities in the outdoor unit

After the compressor has been continuously operated for 3 minutes, if the difference between the indoor coil temperature and the room temperature is out of RANGE C for 1 minute, the indoor fan speed will turn to LOW. Five minutes later, if the difference is still out of RANGE C, the outdoor unit is functioning abnormally. Thus, the compressor will stops and the remote controller will display this occurrence. RANGE A : Indoor coil temperature is more than 5 degrees above room temperature. RANGE B : Indoor coil temperature is within 5 degrees either way of room temperature. RANGE C : Indoor coil temperature is more than 5 degrees below room tempetature.

2-2 DRY operation

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

3 Check lamp is ON and set desired temperature with UP

TEMP.

i ▼

or DOWN button.

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

TIMER

▼ w

button to change the display to temperature mode.

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

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

19

MIN. 3 minutes 2

ON

Thermostat

Indoor fan

Louver

Compressor

ON

LOW speedLOW speed

ON

OFF

ON

OFF

Operation starts by POWER button ON.

Operation stops by POWER button OFF.

Room temperature becomes equal to set temperature.

Room temperature rises above set temperature.

Depends on remote controller setting

W2 Even if the room temperature rises above the set temperature during this period, the compressor will not

start until this period has ended.

(1) Compressor control

1 3-minute time delay

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

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

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

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

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

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

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

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

● If the room temperature thermistor reads below 24°C with thermostat ON, the compressor will stop for 3 minutes.

● If the thermostat is OFF, regardless of room temperature, the compressor will stop for 10 minutes.

5 Coil frost protection

Coil frost protection in DRY operation is the same as in COOL operation.

6 Coil frost prevention

Coil frost prevention does not operate in DRY operation.

(2) Indoor fan control

The indoor fan runs on LOW speed during compressor operation. The fan speed cannot be changed with the remote controller. Also, the indoor fan does not run during compressor OFF.

(3) Louver

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.

20

2-3 FAN operation

i

.

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

NOTE : Temperature can not be set in FAN operation.

1 Indoor fan control

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

2 Louver control

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

21

2-4 TIMER operation

12 11 10

9 8 7 6 5 4 3 2 1

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

Green

lamps

Remaining time:2 hour 59 minutes to 2 hour

TIMER TEMP.

12 11 10

9 8 7 6 5 4 3 2 1

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

1 hour 59 minutes to 1 hour

TIMER TEMP.

12 11 10

9 8 7 6 5 4 3 2 1

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

59 minutes to 0

TIMER TEMP.

12 11 10

9 8 7 6 5 4 3 2 1

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

Time counting is completed.

TIMER TEMP.

iii

i

.

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

<How to operate

●

AUTO STOP timer>

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

■■■

AUTO STOP

TIMER

and lamps turn ON.

▲

w

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

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

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

the remaining time.

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

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

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

■■■

AUTO

START

TIMER

and lamps turn ON.

▲

w

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

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

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

the remaining time.

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

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

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

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

DISPLAY SELECT

22

button.

2-5 Test run

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

TIMER

▼ w

● The test run automatically stops in 2 hours.

● Set temperature is not displayed during test run.

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

lamp ON or the unit OFF.

2-6 Emergency operation

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

[Check items] 1 Make sure the compressor and the fans are running

normally.

2 Locate the trouble with the self-doagnostic function. If

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

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

SW3 1 and 2 ON and 3 OFF on the indoor controller board.

2 To start emergency operation, turn the outdoor side

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

3 During emergency operation, the indoor fan runs on

HIGH speed, the compressor runs continuously, and the louver stops.

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

than 10 hours, as the indoor coil may freeze.

2-7 Auto Restart function

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

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

JR06 Auto restart

Available Not effective

Not available Effective

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

Optional timer adapter PAC-SA89TA-E

ORN

1 2CN2 3

BRN RED

23

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

1. Jumper wire

1 JR01

2 JR02

3 JR03

4 JR04

5 JR05

6 JR06

2. Dipswitch

1 SW1 (Function switch)

...

Jumper wire for the auto vanes.

Cut JR01 for the unit WITHOUT auto vanes.

...

Jumper wire for the temperature to start coil frost prevention

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

...

Jumper wire for set temperature adjustment in HEAT mode. (not applicable) In HEAT operation, heated air stagnates in the upper part of the room. The indoor unit installed in the upper part of the room will detect the air temperature higher than the actual temperature in the living space. This difference is about 4 degrees. Therefore, the temperature detected by the room temperature thermistor should be corrected 4 degrees down. The unit with JR04 attached will make this adjustment.

...

Jumper wire for the indoor fan speed during thermostat OFF in HEAT mode (not applicable) Cutting JR04 changes the speed from Extra-Low to Low.

...

Jumper wire for detecting abnormalities in the outdoor unit Cutting JR05 makes this detection unavailable. (Occurrence of abnormality can not be detected. )

...

Jumper wire for auto restart function Cutting JR06 makes the auto restart function available.

ON OFF

1 2 3

SW1-1) Switch for power supply

ON : 220V OFF : 230V, 240V

SW1-2) Switch for single or twin control

ON : Twin control OFF : Single control

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

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

2 SW2 (Unit switch)

ON OFF

1 2 3

4

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

ON : Unit with electric heater OFF : Unit without electric heater (PS-GJA)

SW2-2) Switch for air conditioner with or without heat pump (keep this switch OFF for PS-GJA)

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

SW2-3) Switch for function code (keep this switch OFF for PS-GJA)

ON : 1 OFF : 0

SW2-4) Switch for function code (keep this switch OFF for PS-GJA)

ON : 1 OFF : 0

3 SW3 (Emergency operation switch)

Normal operation

ON OFF

1

2 3

For emergency cooling

ON OFF

1 2 3

24

TROUBLESHOOTING10

1. SELF-DIAGNOSTIC FUNCTION

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

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

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

seconds during operation with lamp ON.

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

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

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

12

TIMER

TEMP.

▲

w

i

29

▲

TEMP.

i ▼

Unit

Trouble location

Transmission error

in twin control

Outdoor unit

Cause

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

● Poor connector contact

● Wrong wiring between

indoor/outdoor units

● Outdoor unit abnormality detection

● Malfunction of outdoor coil thermistor

● Reversed phase detected

Measures

● Check dipswitch setting

● Check wiring

● Check outdoor unit

● Check outdoor coil thermistor

11

10

9

8

7

6

5

4

3

2

1

28

27

26

25

24

23

22

21

20

19

18

Unit

No.1

Unit

No.2

Unit

No.1

Unit

No.2

Unit

No.1

Unit

No.2

Unit

No.1

Unit

No.2

Unit

No.1

Unit

No.2

Room

temperature

thermistor

(RT1)

Indoor coil

thermistor

(RT2)

Drain sensor

(DS)

Drain

overflow

protection

Coil frost

or overheat

prevention

● Poor connector contact

● Thermistor malfunction

● Poor connector contact

● Thermistor malfunction

● Poor connector contact

● Thermistor malfunction

● Drain pump malfunction

● Drain sensor improperly

mounted

● Air passage short cycle

● Air filter clogged

● Indoor fan malfunction

● Check connector

● Check thermistor ➔ No trouble ➔ replace indoor

● Check connector

● Check thermistor ➔ No trouble ➔ replace indoor

● Check connector

● Check thermistor ➔ No trouble ➔ replace indoor

● Check drain pump

● Check drain sensor ➔ No trouble ➔ replace indoor

● Remove blockage

● Check air filter

● Check indoor fan

}

controller board.

}

controller board.

}

controller board.

}

controller board.

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

25

2. OTHER TROUBLES AND CAUSES

Louvers do not work.

Unit stops after 5 to 20 seconds operation

Power ON/OFF button does not work.

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

Protection function is working.

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

Remote controller is damaged. Transmission wire is poorly connected.

Transmission wire is damaged. Connector is poorly connected.

Louvers motor is damaged. Louvers motor relay is damaged.

Refer to check code on remote controller.

26

DISASSEMBLY PROCEDURE8

OPERATING PROCEDURE PHOTOS

W This unit is PS-GJ(S)

1. Removing the intake grill

(1) Remove the screw at the center of the knob of

the intake grill. (2) Pull the knob of the intake grill toward you. (3) Remove the 2 hangers. (4) Lift the intake grill to remove.

2. Removing the indoor controller board

(1) Remove the intake grill. (2) Remove the 3 screws of the electrical parts

cover and remove the electrical parts cover. (3) Disconnect the fan motor connector and the

connectors on the indoor controller board. (4) Unhook the catch of the controller case by

opening, and remove the indoor controller board.

Photo 1

Knob

Hanger

Photo 2 W

Bell mouth

Intake grill

Screws

Electrical parts cover

Fan nut & washer

Indoor fan

3. Removing the room temperature thermistor

(1) Remove the intake grill. (2) Remove the electrical parts cover. (3) Take out the room temperature thermistor with

the holder. (See Photo 3.) (4) Pull the room temperature thermistor out of the

holder. (5) Disconnect the red connector CN20 on the

indoor controller board.

4. Removing the indoor fan and the indoor fan motor

(1) Remove the intake grill.

Turn the bell mouth clockwise to remove. (3) Remove the fan nut and the washer. (4) Pull out the indoor fan. (See Photo 2.) (5) Remove the 2 screws of the wiring cover and

remove wiring cover. (6) Remove the 4 fan-motor nuts and remove the

indoor fan motor. (7) Remove the electrical parts cover. (8) Disconnect the fan motor connector.

(See Photo 3.)

Photo 3

Capacitor

Room temperature thermistor

Photo 4

Indoor fan motor

Screws

Fan motor connector Indoor controller board

Controller case

Transformer

Electrical parts box

Wiring cover

Catches

Nuts

27

OPERATING PROCEDURE PHOTOS

5. Removing the front panel

(1) Remove the intake grill. (2) Remove the 2 screws at the lower part of the

front panel. (3) Pull the front panel down to remove. (4) Disconnect the blue connector of the controller.

6. Removing the louver motor

(1) Remove the intake grill. (2) Remove the front panel. (3) Remove the 5 screws of the swing louver and

remove the swing louver. (4) Remove the 2 screws of the louver motor and

remove the louver motor. (5) Remove the electrical parts cover. (6) Disconnect the terminal “VANE” on the indoor

controller board.

Photo 5

Front panel

Photo 6

Swing louver screws

Photo 7

Swing louver

Top panel

Louver motor

Controller

Screws

Swing louver

Screws

7. Removing the indoor coil thermistor

(1) Remove the intake grill. (2) Remove the front panel. (3) Remove the 10 screws of the insulation panel

and remove the insulation panel. (4) Remove the swing louver. (5) Remove the screw of the piping cover and

remove the piping cover. (6) Remove the indoor coil thermistor from the

holder on the copper pipe. (7) Remove the electrical parts cover. (8) Disconnect the connector CN21 on the indoor

controller board.

Photo 8

Insulation panel

Photo 9

Piping cover

Screw

Indoor heat exchanger

Indoor coil thermistor

28

OPERATING PROCEDURE PHOTOS

8. Removing the indoor heat exchanger

(1) Remove the intake grill. (2) Remove the front panel. (3) Remove the insulation panel. (4) Remove the 6 screws of the top panel and

remove the top panel. (5) Remove the swing louver. (6) Remove the electrical parts box. (7) Remove the 3 screws of the drain pan support

and remove the drain pan support. (8) Remove the 4 screws of the indoor heat

exchanger and remove the indoor heat

exchanger.

9. Removing the drain pan

(1) Remove the intake grill. (2) Remove the front panel. (3) Remove the insulation panel. (4) Remove the top panel. (5) Remove the swing louver. (6) Remove the electrical parts box and the drain

pan support. (7) Remove the pipe support. (8) Remove the drain pan.

Photo 10

Drain pan support

Photo 11

Electrical parts box

Screws

Drain pan

Indoor heat exchanger

Screws

Pipe support

Screws

Indoor heat exchanger

Drain pan support

29

9 PARTS LIST

Unit

Amount

Recommended

Q’ty

Part No. Part Name Specification

Q’ty/set

PS-3

GJA,GJA

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

No.

1 2 3 4 5 6 7 8

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

R01 71G 661 R01 71G 662 R01 71G 641 R01 71G 676 T7W 87J 003 R01 71G 038 R01 71G 035 R01 71G 021 R01 71G 019 T7W 87J 222 R01 71G 060 T7W 12K 200

— T7W 022 304 R01 71G 651 R01 71G 691 R01 71G 054 R01 71G 500 R01 71G 686 R01 12G 523

—

RIGHT SIDE PANEL LEFT SIDE PANEL TOP PANEL REAR PANEL SWING LOUVER GUIDE VANE (V) GUIDE VANE (H) VANE ARM (V) VANE ARM (H) LOUVER MOTOR CRANK CONTROLLER ATTACHMENT CONTROLLER CABLE FRONT PANEL INTAKE GRILLE MAGNET CATCH AIR FILTER BASE DRAIN SOCKET I

NSULATION PLATE

HANGER

1 1 1 1 1 6 8 1 1 1 1 1 1 1 1 1 2 1 1 1 1 2

(BG02L461H02)

(BG00J547G07)

(BG88H096H02)

ML

R.B

Price

STRUCTURAL PARTS PS-3GJA PS-3GJA

1

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

30

STRUCTURAL PARTS

Unit

Amount

Recom-

mended

Q’ty

Part No. Part Name Specification

Q’ty/set

PS-4

GJSA,GJSA

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

No.

1 2 3 4 5 6 7 8

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

R01 85G 661 R01 85G 662 R01 85G 641 R01 85G 676 T7W 87J 003 R01 71G 038 R01 71G 035 R01 71G 021 R01 71G 019 T7W 87J 222 R01 71G 060 T7W 12K 200

— T7W 022 304 R01 71G 651 R01 71G 691 R01 71G 054 R01 71G 500 R01 85G 686 R01 12G 523

—

RIGHT SIDE PANEL LEFT SIDE PANEL TOP PANEL REAR PANEL SWING LOUVER GUIDE VANE (V) GUIDE VANE (H) VANE ARM (V) VANE ARM (H) LOUVER MOTOR CRANK CONTROLLER ATTACHMENT CONTROLLER CABLE FRONT PANEL INTAKE GRILLE MAGNET CATCH AIR FILTER BASE DRAIN SOCKET INSULATION PLATE HANGER

1 1 1 1 1 6 8 1 1 1 1 1 1 1 1 1 2 1 1 1 1 2

(BG02L461H02)

(BG00J547G07) (BG88H096H02)

ML

R.B

Price

PS-4GJSA PS-4GJSA

1

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

31

FUNCTIONAL PARTS

Unit

Amount

Recom-

mended

Q’ty

Part No. Part Name

Specification

Q’ty/set

PS-3

GJA,GJA

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

No.

1 2 3 4 5 6 7 8

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

T7W 079 480 R01 06A 202 T7W 87J 202 T7W 551 762 R01 71G 114 R01 71G 117 R01 71G 119 R01 71G 529 R01 71G 527 T7W 90J 310 T7W 520 239 T7W 523 716 T7W 515 716 T7W 87J 799 R01 580 255

— — — —

— R01 08K 097 T7W 87J 675

HEAT EXCHANGER ROOM TEMPERATURE

THERMISTOR INDOOR COIL THERMISTOR INDOOR FAN MOTOR SIROCCO FAN SCROLL FAN GUARD ASSY DRAIN PAN DRAIN HOSE INDOOR CONTROLLER BOARD FUSE TERMINAL BLOCK TERMINAL BLOCK TRANSFORMER INDOOR FAN MOTORCAPACITOR CONTROL BOX COVER COIL COVER CONTROLLER CASE PIPE SUPPORT WIRING COVER SPL WASHER FAN GUARD

PA8V30-SA

250V 6.3A 3P (L,N,;) 2P (1, 2)

3.5+ 440V

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

(BG02J715G02) (BG25L487H03) (BG25V886H03) (BG02F916H08) (BG02L366H04)

RT1 RT2

MF

I.B

F1,2(I.B)

TB1 TB2

T C

Price

PS-3GJA PS-3GJA

1

17

32

8

11

15

13

12

4 6

20

18

9

10

19

14

21

16

5

22

7

Unit

Amount

Recom-

mended

Q’ty

Part No. Part Name Specification

Q’ty/set

PS-4

GJSA,GJSA

1

Remarks

(Drawing No.)

Wiring

Diagram

Symbol

No.

1 2 3 4 5 6 7 8

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

R01 96G 480 R01 06A 202 R01 87J 202 T7W

552 762 R01 85G 114 R01 85G 117 R01 71G 119 R01 71G 529 R01 71G 527 T7W

90J 310

T7W

520 239

T7W

523 716 R01 515 716 T7W

87J 799 R01 653 255

— — — —

— R01 08K 097 T7W

87J 675

HEAT EXCHANGER ROOM TEMPERATURETHERMISTOR INDOOR COIL THERMISTOR INDOOR FAN MOTOR SIROCCO FAN SCROLL FAN GUARD ASSY DRAIN PAN DRAIN HOSE INDOOR CONTROLLER BOARD FUSE TERMINAL BLOCK TERMINAL BLOCK TRANSFORMER INDOOR FAN MOTOR CAPACITOR CONTROLLER BOX COVER COIL COVER CONTROLLER CASE PIPE SUPPORT WIRING COVER SPL WASHER FAN GUARD

PA8V70-SA

250V 6.3A 3P (L,N,;) 2P (1, 2)

4.0+F 440V

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

(BG02J715G02) (BG25L487H03)

(BG25B573H05)

(BG02F916H09) (BG07L366H04)

RT1 RT2

MF

I,B

F1,2<I.B>

TB1 TB2

T

C

Price

FUNCTIONAL PARTS PS-4GJSA PS-4GJSA

1

17

8

15

13

11

12

20

18

16

10

19

14

5

4 6

9

7

22

21

33

10 OPTIONAL PARTS

1. REFRIGERANT PIPES

Service Ref. : PS-3GJA1

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

Service Ref. : PS-4GJSA1

PAC-05FFS-E

5m

PAC-07FFS-E

7m

Liquid : { 9.52 Gas : {15.88

Indoor unit : Flared Outdoor unit : Flared

PAC-10FFS-E

10m

PAC-15FFS-E

15m

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

Note 1. How to connect refrigerant pipes.

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

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

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

PAC-SC51P1-E5mPAC-SC52P1-E

7m

Liquid : { 9.52 Gas : {19.05

Indoor unit : Flared Outdoor unit : Flared

PAC-SC53P1-E

10m

PAC-SC54P1-E

15m

2. CENTRALIZED REMOTE CONTROLLER

Allows individual or combined control of up to 16 units. When using this controller, a program timer adapter (PAC-825AD) is also needed.

Part No. PAC-805RC

3. PROGRAM TIMER ADAPTER

This adapter is needed when a program timer (PAC-SK65PT) or a centralized remote controller (PAC-805RC) in used.

Part No. PAC-825AD

4. TIMER ADAPTER

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

Part No. PAC-SA89TA-E

5. MULTIPLE REMOTE CONTROLLER ADAPTER

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

Part No. PAC-SA88HA-E

34

HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100 TELEX J24532 CABLE MELCO TOKYO

Issued in Jun. 1997. No.OC141 510

Specifications subject to change without notice

Mitsubishi PS-3GJA1, PS-4GJSA1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual