Mitsubishi PCH-2GKHA1, PCH-2.5GKHA1, PCH-3GKHA1, PCH-4GKHSA1, PCH-5GKHSA1 Service Manual

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

CONTENTS

1. FEATURES ···········································3

2. PART NAMES AND FUNCTIONS········7

3. SPECIFICATIONS·································8

4. DATA ···················································11

5. OUTLINES AND DIMENSIONS··········15

6. WIRING DIAGRAM·····························20

7.

REFRIGERANT SYSTEM DIAGRAM

······21

8. OPERATION FLOW-CHART··············22

9. MICROPROCESSOR CONTROL·······26

10. TROUBLESHOOTING ························49

11. DISASSEMBLY PROCEDURE ···········57

12. PARTS LIST········································62

13. OPTIONAL PARTS·····························73

Indoor unit

PCH-2GKHA PCH-2GKHA1 PCH-2.5GKHA PCH-2.5GKHA1 PCH-3GKHA PCH-3GKHA1 PCH-4GKHSA PCH-4GKHSA1 PCH-5GKHSA PCH-5GKHSA1 PCH-6GKHSA PCH-6GKHSA1

No. OC135

1997

[Models names] [Service Ref.]

This manual does not cover the following outdoor units. When serving them, please refer to the service manual No.OC128 and this manual in a set. [Service Ref.] PUH-2VKA

2

PUH-2.5VKA2 PUH-3VKA2 PUH-3YKA2 PUH-4YKSA3 PUH-5YKSA3 PUH-6YKSA2

INDOOR UNIT

Ceiling Suspended

Series PCH

REMOTE CONTROLLER

The Slim Line. From Mitsubishi Electric.

FILTER

CHECK MODE

TEST RUN

3

● Operation buttons

● Once the operation of the unit is set, subsequent operation can

only be performed by pressing the ON/OFF button repeatedly.

FILTER

CHECK MODE

TEST RUN

4

This switches between continuous operation and the timer operation.

button

This sets the ventilation fan speed.

button

This sets or switches the current time. start time and stop time.

button

This switches the horizontal fan motion ON and OFF.

button

Press this button to switch

the cooler electronic dry (dehumidify) automatic and heater modes.

button

This resets the filter service indication display.

FILTER button

This switches between the operation and stop modes each time it is pressed. The lamp on this butoon lights during operation.

ON/OFF button

This sets the room temparature The temparature setting can be performed in 1°C units

Setting range

Cooler 19°C to 30°C Heater 17°C to 28°C

TEMP button

This model name of the remote controller is indicated.

1

FEATURES

1. ADVANCED REMOTE CONTROLLER

Indoor unit

Ceiling Suspended

Series PCH

Remote controller

FILTER

CHECK MODE

TEST RUN

w Rating Conditions (JIS B 8616)

Cooling : Indoor : 27: (80

o

F)DB, 19: (66oF)WB.

Outdoor : 35: (95

o

F)DB, 24: (75oF)WB.

Heating : Indoor : 20: (68

o

F)DB.

Outdoor : 7: (45

o

F)DB, 6:(43oF)WB.

This adjusts the vertical angle of the ventilation.

(This button dose not operate in this model)

CHECK-TEST RUN button

Only press this button to perform an inspection check or test operation. Do not use it for normal operation.

Cooling capacity/Heating capacity

W Btu/h

Service Ref.

PCH-2GKHA1 PCH-2.5GKHA1 PCH-3GKHA1 PCH-4GKHSA1 PCH-5GKHSA1 PCH-6GKHSA1

5,400 / 6,200 (7,600) 7,000 / 7,100 (9,200)

7,500 / 8,500 (10,600)

10,000 / 10,450 (13,150)

12,400 /13,900 (16,900)

14,500 / 15,000 (18,000)

18,400 / 21,200 (25,900) 23,900 / 24,200 (31,400) 25,600 / 29,000 (36,200) 34,100 / 35,700 (44,900) 42,300 / 47,400 (57,700) 49,500 / 51,200 (61,400)

4

Caution

● Only the display lights when the unit is stopped and power supplied to the unit.

● When power is turned ON for the first time the (CENTRAL CTRL) display appears to go off momentarily but this is not a

malfunction.

● When the central control remote control unit, which is sold separately, is used the ON-OFF button, button and TEMP button do not operate.

● “NOT AVAILABLE” is displayed when the

k button are pressed.This indicates that this room unit is not equipped with the

fan direction adjustment function and the louver function.

FILTER

CHECK MODE

TEST RUN

4

CENTRALLY CONTROLLED display

This indicates when the unit is

controlled by optional features such as central control type remote controller.

display

This indicates when the continous

operation and time operation modes are set.

It also display the time for the timer

operation at the same time as when it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

This indicates when the standby

mode is set from the time the sleep operation starts until the heating air is discharged.

DEFROST display

This indicates when the defrost

operation is performed.

CHECK display

This indicates when a malfunction

has occurred in the unit which should be checked.

display

The current time , start time and stop time can be displayed in tensecond intervals by pressing the time switch button. The start time or stop time is always displayed during the timer operation.

● Display

Operation lamp

This lamp lights during operation, goes off when the unit stops and flashes when a malfunction occurs.

display

This lamp lights when electricity is supplied to the unit.

display

This displays the selected setting temperature.

display

This displays the air direction.

display

The temperature of the suction air is displayed during operation. The display range is 8° to 39°C. The display flashes 8°C when the actual temperature is less than 8° and flashes 39°C when the actual temperature is greater than 39°C.

display

This display lights in the check mode or when a test operation is performed.

CHECK MODE

TEST RUN

display

This lamp lights when the filter need to be cleaned.

FILTER

display

The selected fan speed is displayed.

5

1. AIR OUTLET

New PCH series models have 1 air outlet (auto vane switching of horizontal air flow / down flow by switched by auto vane) instead of 2 (horizontal,and down flows).

2. EASY TO CLEAN ; FLOCKLESS VANE

With our original air current control mechanism, a flockless vane is newly adapted. The flockless vane prevents the condensation on the vane. By changing the vane to the flockless type, the unit can be cleaned much easier with mild household detergent.

3. NEW MATERIALS FOR BETTER OIL RESISTANCE

We have changed the materials of grill, filer, fan and fan casing from ABS to P.P. (polypropylene) for better oil resistance. As a result, oil crazing is cut in haif.

4. SIMPLIFIED INSTALLATION WORK (DIRECT SUSPENDING METHOD)

Simplified the installation work by changing the suspending method to the direct suspending method (suspending the unit directly from the suspension fixture).

In this way, the unit can be attached to the suspension fixture without removing the installation parts off (Only the

side cover is removed). This method is much simpler than the “One-time installation method”.

5. IMPROVING EFFICIENCY OF PIPING WORK

1

Removed the knockout work by separating the piping space from the air outlet for efficiency of the piping work.

w Knockout work is needed for the top part. When

optional drain-up machine is installed, the refrigerant pipe exits out from the top.

w Please move the rubber plug for the unit to the right joint

when drainage pipe exits from the left side.

2

Improved the flexbility by making it possible for drainage pipe to exit not only from the right side back but also from the left side back.

Unifies the air speed with the vane.

Sending the air to the upper area of the vane

Prevents the air comes from cntering from outside the unit

Protruding portion A

Protruding portion B

Flockless vane

Air outlet

B

A

L G D

Side panel

open

L : Liquid pipe G : Gas pipe D : Drain pipe

Back panel

L

U-cut

G

open

D

Rubber plug

Insulation cover (attached)

Drain pipe (purchased locally)

Joint coupliy (attached)

Drain pan

Insulation cover

Band (attached)

6

6. QUITENESS ; 43dB (HIGH NOTCH)

New PCH series has No.1 quietness by changing the air course and the adapting the new shape air outlet.

7. EASY MAINTENANCE ; NO MAINTENANCE NECESSARY FOR 2500 HOURS

The new longlife air filter can be used continuously 2500 hours without maintenance (at general office situation).

8. CHOICE OF FILTER

High performance filter can be purchaced optionally for the special needs.

Auto vane

Swing

Locations Appropriate filter Capability Filter life Maintenance How to attach to the unit

Busy shops etc...

Regular office, shops

High performance filter

Standard longlife filter

2500 hour

The filter can be used again after cleaning.

The filter can be used again

after cleaning.

Remove the standard long life filter before attach this optional parts.

It is attached to the unit.

Weighing method 70%

Weighing method 30%

7

PART NAMES AND FUNCTION

2

● Indoor (Main) Unit

Air outlet

Intake grille

Air intake

Left/right guide vanes

Change the direction of airflow from the horizontal blower.

Long-life fillter

Removes dust and foreigh matter from air coming in through the grille (Recommended cleaning interval : Approx, every 2,500 operating hours)

Up/down guide vanes

Change the direction of airflow from the vartical blower.

Service Ref.

Power supply

External finish Heat exchanger

Booster heater Operation control & Thermostat Noise level(Low-High) Cond. drain connection O.D.

Dimensions

Weight

Service Ref.

Power supply

External finish Refrigerant control Compressor

Heat exchanger

Defrost method Crankcase heater Noise level

Dimensions

Weight Refrigerant

Pipe size O.D.

Connection method

Between the indoor & outdoor unit

Indoor side Outdoor side Height difference Piping length

Input Running current Starting current

Fan(drive))No. Fan motor output Airflow(Low-High) External static pressure

Input Running current Starting current

Model Motor output Starter type Protection devices

Fan(drive))No. Fan motor output Airflow

Charge

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

W

D H

Function

Total input

Capacity

Cooling

Heating

Upper limit Lower limit Upper limit Lower limit

Indoor 35: DB, 22.5: WB 21: DB, 15.5: WB

27: DB 20: DB

Outdoor

46: DB

-5: DB

21: DB, 15.5: WB

-8.5: DB, -9.5: WB

2. Guaranteed operating range

W

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

W

D H

INDOOR UNITOUTDOOR UNIT

REFRIGERANT

PIPING

Item

Service Ref.

Btu/h

W

kW

A A

kW

A A

kW

kg,(lbs)

kW

K/min <CFM>

kW

K/min <CFM>

Pa(mmAq)

kW

mm,(in) mm,(in)

Liquid Gas

PCH-2GKHA1 PCH-2.5GKHA1

Cooling

18,400

5,400

2.30

0.10

0.43

1.20

0.10 (1.50)

0.43(6.21)

1.20 (6.98)

0.13

0.55

1.27

0.13 (2.23)

0.55 (9.30)

1.27 (10.02)

Heating

21,200 (25,900)

6,200 (7,600)

2.32 (3.72)

Cooling

23,900

7,000

2.59

Heating

24,200 (31,400)

7,100 (9,200)

2.36 (4.46)

PCH-2GKHA

1

Single phase. 50Hz. 220-240V

Munsell 0.70Y 8.59 / 0.97

Plate fin coil

PCH-2.5GKHA

1

Sirocco (direct))2

0.054

10 -13 <353-459>

Sirocco (direct))3

0.07

14 -18 <494-635>

0 (direct blow)

(1.4) (2.1)

Remote controller & built-in

37 - 42 37 - 43

26(1)

1,000 (39-3/8) 1,310 (51-9/16)

680 (26-3/4)

210 (8-1/4)

28.5 (63)

PUH-2VKA

2

36 (79)

PUH-2.5VKA

2

NH38VMD

1.7

NH41VMD

2.0

0.065

45 (1,590)

0.085

50 (1,764)

650 (25-5/8)

64 (141)

850 (33-7/16)

68 (150)

Max. 40m Max. 40m

Max. 50m Max. 50m

49 52

2.2 (4.9) 2.8 (6.2)

Single phase. 50Hz. 220-240V

Reverse cycle

38

R-22

870 (34-1/4)

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

Munsell 5Y 7/1

Capillary tube

Hermetic

Line start

Internal thermostat. High-pressure switch

Plate fin coil

Propeller (direct)✕1

2.20

9.86 45

2.22

9.95 45

2.46

10.68 52

2.23

9.78 52

9.52 (3/8)

15.88 (5/8) Flared Flared

8

SPECIFICATIONS

3

Rating Conditions (JIS B8616)

Notes1. Rating Conditions (JIS B8616)

Cooling : Indoor : 27:(80

o

F)DB. 19:(66oF)WB

Outdoor : 35:(95

o

F)DB. 24:(75oF)WB

Heating : Indoor : 20:(68

o

F)DB.

Outdoor : 7:(45

o

F)DB. 6:(43oF)WB

Refrigerant piping length (one way) : 5m(16ft)

3. Above data based on indicated voltage Indoor Unit 1 phase 240V 50Hz Outdoor Unit 1 phase 240V 50Hz

9

Rating Conditions (JIS B8616)

Service Ref.

Power supply

External finish Heat exchanger

Booster heater Operation control & Thermostat Noise level(Low-High) Cond. drain connection O.D.

Dimensions

Weight

Service Ref.

Power supply

External finish Refrigerant control Compressor

Heat exchanger

Defrost method Crankcase heater Noise level

Dimensions

Weight Refrigerant

Pipe size O.D.

Connection method

Between the indoor & outdoor unit

Indoor side Outdoor side Height difference Piping length

Input Running current Starting current

Fan(drive))No. Fan motor output Airflow(Low-High) External static pressure

Input Running current Starting current

Model Motor output Starter type Protection devices

Fan(drive))No. Fan motor output Airflow

Charge

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

W

D H

Function

Total input

Capacity

Cooling

Heating

Upper limit Lower limit Upper limit Lower limit

Indoor 35: DB, 22.5: WB 21: DB, 15.5: WB

27: DB 20: DB

Outdoor

46: DB

-5: DB

21: DB, 15.5: WB

-8.5: DB, -9.5: WB

2. Guaranteed operating range

W

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

W

D H

INDOOR UNITOUTDOOR UNIT

REFRIGERANT

PIPING

Item

Service Ref.

Btu/h

W

kW

A A

kW

A A

kW

kg,(lbs)

kW

K/min <CFM>

kW

K/min <CFM>

Pa(mmAq)

kW

mm,(in) mm,(in)

Liquid Gas

PCH-3GKHA1 PCH-4GKHSA1

Cooling

25,600

7,500

3.28

0.13

0.55

1.27

0.13 (2.23)

0.55 (9.30)

1.27 (10.02)

0.16

0.70

1.48

0.16 (2.86)

0.70 (11.95)

1.48 (12.73)

Heating

29,000 (36,200)

8,500 (10,600)

3.07 (5.17)

Cooling

34,100 10,000

3.36

Heating 35,700 (44,900) 10,450 (13,150)

3.35(6.05)

PCH-3GKHA

1

Single phase. 50Hz. 220-240V

Munsell 0.70Y 8.59 / 0.97

Plate fin coil

Sirocco (direct) ✕ 3

PCH-4GKHSA

1

0.07

14 -18 <494-635>

0.09

20 -25 <706-883>

0 (direct blow)

(2.1)

210 (8-1/4) 270 (10-5/8)

(2.7)

Remote controller & built-in

37 - 43 40 - 45

26 (1)

1,310 ( 51-9/16 )

680 (26-3/4)

36 (79)

PUH-3VKA

2,PUH-3YKA2

39.5 (87)

PUH-4YKSA

3

NH52VND(PUH-3VKA),NH52YDA(PUH-3YKA)

2.2 / 2.4

NH56YDA

2.7

Propeller (direct) ✕ 1

0.085

50 (1,764)

Propeller (direct) ✕ 2

0.065 + 0.065 95 (3,350)

850 (33-7/16)

75 (165)

1,258 (49-1/2)

94 (207)

Max. 50m Max. 50m

38 52

38 54

3.2 (7.1)

9.52 (3/8)

15.88 (5/8)

4.2 (9.2)

9.52 (3/8)

19.05 (3/4)

VKA...1phase, 50Hz, 220-240V / YK(S)A...3phase, 50-380Hz, 415V, 4wires

Reverse cycle

R-22

870 <34-1/4>

295 + 24 <11-5/8 add 1>

Munsell 5Y 7/1

Capillary tube

Hermetic

Line start

VKA...Inner thermostat. High-pressure switch YKA...Anti-phase protector, Thermal relay, Thermal switch, High-pressute switch

Plate fin coil

3.15

13.82 / 5.16 58 / 37

2.94

12.89 / 4.81 58 / 37

3.20

5.24 40

3.19

5.22 40

Flared Flared

Notes1. Rating Conditions (JIS B8616)

Cooling : Indoor : 27:(80

o

F)DB. 19:(66oF)WB

Outdoor : 35:(95

o

F)DB. 24:(75oF)WB

Heating : Indoor : 20:(68

o

F)

Outdoor : 7:(45

o

F)DB. 6:(43oF)WB.

Refrigerant piping length (one way) : 5m(16ft)

3. Above data based on indicated voltage Indoor Unit 1 phase 240V 50Hz Outdoor Unit 1 phase 240V 50Hz / 3 phase 415V 50Hz

10

Rating Conditions (JIS B8616)

Service Ref.

Power supply

External finish Heat exchanger

Booster heater Operation control & Thermostat Noise level(Low-High) Cond. drain connection O.D.

Dimensions

Weight

Service Ref.

Power supply

External finish Refrigerant control Compressor

Heat exchanger

Defrost method Crankcase heater Noise level

Dimensions

Weight Refrigerant

Pipe size O.D.

Connection method

Between the indoor & outdoor unit

Indoor side Outdoor side Height difference Piping length

Input Running current Starting current

Fan(drive))No. Fan motor output Airflow(Low-High) External static pressure

Input Running current Starting current

Model Motor output Starter type Protection devices

Fan(drive))No. Fan motor output Airflow

Charge

dB(A) mm,(in) mm,(in) mm,(in) mm,(in)

kg,(lbs)

W

D H

Function

Total input

Capacity

Cooling

Heating

Upper limit Lower limit Upper limit Lower limit

Indoor 35: DB, 22.5: WB 21: DB, 15.5: WB

27: DB 20: DB

Outdoor

46: DB

-5: DB

21: DB, 15.5: WB

-8.5: DB, -9.5: WB

2. Guaranteed operating range

W

dB(A) mm,(in) mm,(in) mm,(in)

kg,(lbs)

W

D H

INDOOR UNITOUTDOOR UNIT

REFRIGERANT

PIPING

Item

Service Ref.

Btu/h

W

kW

A A

kW

A A

kW

kg,(lbs)

kW

K/min <CFM>

kW

K/min <CFM>

Pa(mmAq)

kW

mm,(in) mm,(in)

Liquid Gas

PCH-5GKHSA1 PCH-6GKHSA1

Cooling

42,300 12,400

4.45

0.24

1.06

2.20

0.24 (3.24)

1.06 (13.56)

2.20 (14.70)

0.24

1.06

2.20

0.24 (3.24)

1.06 (13.56)

2.20 (14.70)

Heating 47,400 (57,700) 13,900 (16,900)

4.40 (7.40)

Cooling

49,500 14,500

4.97

Heating 51,200 (61,400) 15,000 (18,000)

4.82 (7.82)

PCH-5GKHSA

1

Single phase. 50Hz. 220-240V

PCH-6GKHSA

1

Munsell 0.70Y 8.59 / 0.97

Plate fin coil

Sirocco (direct)✕4

0.15

27 -34 <953-1,200>

0 (direct blow)

(3.0)

Remote controller & built-in

41-46 42-48

26 (1)

1,620 (63-3/4)

680 (26-3/4) 270 (10-5/8)

46 (101)

PUH-5YKSA

3

48 (106)

PUH-6YKSA

2

ZR61KC-TFD

3.5

ZR68KC-TFD

4.0

0.085 + 0.085 95 (3,350)

0.10 + 0.10

100 (3,530)

114 (251) 117 (258)

55 56

5.4 (11.9) 5.0 (11.0)

3 phases. 50Hz. 380-415V (4 wires)

Reverse cycle

38

R-22

970 (38-3/16)

345 + 24 (13-9/16 add 1)

1,258 (49-1/2)

Munsell 5Y 7/1

Capillary tube

Hermetic

Line start

Anti-phase protector, Internal thermostat, Thermal switch, High-pressure switch

Plate fin coil

Propeller (direct)✕2

4.21

6.89 53

4.16

6.81 53

4.73

7.74 74

4.58

7.50 74

9.52 (3/8)

19.05 (3/4) Flared Flared

Max. 50m Max. 50m

Notes1. Rating Conditions (JIS B8616)

Cooling : Indoor : 27:(80

o

F)DB. 19:(66oF)WB

Outdoor : 35:(95

o

F)DB. 24:(75oF)WB

Heating : Indoor : 20:(68

o

F)DB.

Outdoor : 7:(45

o

F)DB. 6:(43oF)WB.

Refrigerant piping length (one way) : 5m(16ft)

3. Above data based on indicated voltage Indoor Unit 1 phase 240V 50Hz Outdoor Unit 3 phase 415V 50Hz

11

4

DATA

1. PERFORMANCE DATA

1) COOLING CAPACITY

5448 5800 6157 6517 7062 7519 7981 8448 7566 8056 8551

9052 10088 10741 11402 12069 12510 13319 14138 14965 14628 15575 16532 17500

5299 5648 6012 6392 6869 7321 7794 8286 7359 7844 8350 8878

9812 10459 11134 11838 12167 12969 13806 14679 14228 15165 16144 17164

5104 5442 5798 6171 6616 7054 7515 7999 7089 7558 8052 8571

9452 10078 10736 11427 11720 12496 13313 14170 13705 14613 15568 16570

4897 5226 5574 5940 6348 6775 7225 7700 6802 7259 7741 8250 9069

9678 10322 11000 11245 12001 12799 13640 13150 14033 14967 15951

4678 5000 5341 5700 6064 6482 6923 7389 6515 6954 7419 7910 8686 9272

9892 10547 10771 11497 12266 13078 12595 13445 14344 15293

4447 4764 5099 5451 5765 6176 6609 7067 6199 6632 7089 7570 8266 8842

9451 10094 10249 10964 11720 12516 11985 12821 13705 14636

Service Ref.

PCH-2GKHA

1

PCH-2.5GKHA1

PCH-3GKHA1

PCH-4GKHSA1

PCH-5GKHSA1

PCH-6GKHSA1

16 18 20 22 16 18 20 22 16 18 20 22 16 18 20 22 16 18 20 22 16 18 20 22

CA

20 25 30 35 40 45

Outdoor intake air DB!C

Refrigerant piping length (one way)

PCH-2GKHA

1

PCH-2.5GKHA1 PCH-3GKHA1 PCH-4GKHSA1 PCH-5GKHSA1 PCH-6GKHSA1

Service Ref.

5m

1.00

10m

0.992

0.989

0.981

0.989

0.981

0.975

15m

0.983

0.980

0.968

0.980

0.968

0.955

20m

0.978

0.970

0.952

0.970

0.952

0.935

25m

0.966

0.960

0.940

0.960

0.940

0.918

30m

0.959

0.950

0.925

0.950

0.925

0.900

35m

0.950

0.940

0.913

0.940

0.913

0.884

40m

0.945

0.930

0.900

0.930

0.900

0.869

45m

—

0.920

0.886

0.920

0.886

0.855

50m

—

0.910

0.874

0.910

0.874

0.840

Indoor Intake

air

WB!C

P.C.

1.84

1.88

1.92

1.95

2.08

2.12

2.16

2.20

2.63

2.68

2.73

2.78

2.69

2.75

2.80

2.85

3.57

3.64

3.71

3.78

3.98

4.06

4.14

4.22

1.92

1.96

2.00

2.04

2.16

2.21

2.25

2.30

2.74

2.80

2.85

2.91

2.81

2.87

2.92

2.98

3.72

3.79

3.87

3.95

4.15

4.24

4.32

4.41

2.07

2.12

2.16

2.21

2.33

2.38

2.44

2.49

2.95

3.02

3.08

3.15

3.02

3.09

3.16

3.23

4.00

4.10

4.19

4.27

4.47

4.57

4.67

4.77

2.22

2.27

2.33

2.38

2.50

2.56

2.62

2.68

3.16

3.24

3.32

3.40

3.24

3.32

3.40

3.48

4.29

4.40

4.50

4.61

4.79

4.91

5.03

5.15

2.37

2.43

2.49

2.56

2.67

2.73

2.81

2.89

3.38

3.46

3.55

3.65

3.46

3.55

3.64

3.74

4.58

4.70

4.82

4.96

5.12

5.25

5.39

5.54

2.52

2.58

2.66

2.75

2.84

2.91

3.00

3.10

3.59

3.68

3.79

3.92

3.68

3.77

3.89

4.01

4.87

5.00

5.15

5.32

5.44

5.58

5.75

5.94

CA P.C. CA P.C. CA P.C. CA P.C. CA P.C.

Notes CA : Capacity (W)

P.C. : Power consumption (kW)

Cooling cpapacity correction factors

12

2. HEATING CAPACITY

Service Ref.

PCH-2GKHA

1

PCH-2.5GKHA1

PCH-3GKHA1

PCH-4GKHSA1

PCH-5GKHSA1

PCH-6GKHSA1

15 20 25 15 20 25 15 20 25 15 20 25 15 20 25 15 20 25

CA

-10 -5 0 5 10 15

Outdoor intake air WB!C

Refrigerant piping length (one way)

PCH-2GKHA

1

PCH-2.5GKHA1 PCH-3GKHA1 PCH-4GKHSA1 PCH-5GKHSA1 PCH-6GKHSA1

Service Ref.

5m

1.00

10m

1.00

15m

1.00

20m

1.00

25m

1.00

30m

1.00

35m

0.998

40m

0.995

45m

—

0.993

50m

—

0.990

Indoor Intake

air

DB!C

P.C.

1.58

1.71

1.81

1.61

1.73

1.84

2.09

2.26

2.40

2.29

2.46

2.61

3.00

3.23

3.43

3.29

3.54

3.76

CA P.C. CA P.C. CA P.C. CA P.C. CA P.C. 4246 4066 3907 4862 4656 4474 5821 5574 5356 7156 6852 6585 9519 9115 8759

10272

9836 9453

1.75

1.89

2.01

1.78

1.92

2.04

2.31

2.49

2.66

2.53

2.72

2.90

3.32

3.58

3.81

3.63

3.92

4.17

4866 4675 4485 5573 5354 5136 6671 6409 6149 8202 7880

7560 10910 10481 10056 11773 11311 10851

1.93

2.08

2.22

1.96

2.11

2.26

2.55

2.75

2.94

2.78

3.00

3.20

3.65

3.94

4.21

4.00

4.31

4.61

5546 5337 5125 6351 6112 5869 7604 7317 7027 9348 8996

8639 12434 11966 11491 13418 12912 12400

2.11

2.28

2.44

2.15

2.32

2.48

2.80

3.01

3.23

3.05

3.29

3.52

4.01

4.32

4.63

4.39

4.73

5.07

6285 6051 5827 7198 6929 6673 8617 8296

7989 10594 10199

9821 14091 13566 13064 15206 14640 14098

2.31

2.49

2.67

2.35

2.53

2.72

3.06

3.30

3.53

3.34

3.60

3.86

4.39

4.72

5.07

4.81

5.18

5.55

7082 6816 6590 8110 7806 7546 9710 9345

9034 11937 11488 11107 15878 15281 14774 17135 16491 15943

2.52

2.71

2.91

2.57

2.76

2.96

3.34

3.59

3.85

3.64

3.92

4.21

4.78

5.15

5.52

5.24

5.64

6.05

7936 7632 7413 9088 8740

8489 10880 10463 10163 13376 12863 12495 17792 17110 16620 19200 18464 17935

Notes CA : Capacity (W)

P.C. : Power consumption (kW)

Heating capacity correction factors

13

3. ELECTRICAL DATA

Rating Conditions (JIS B8616) Indoor

……

220V 50Hz 1phase

Outdoor… 220V 50Hz 1phase / 380V 50Hz 3phase

IndoorOutdoor

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

Mode Capacity (W) Total Input (kW)

Service Ref.

Cooling

5,300

2.20

0.08

0.38

1.10

2.12

9.83 43

Heating

6,100

2.22

0.08

0.38

1.10

2.14

9.93 43

PCH-2GKHA

1

Cooling

6,900

2.52

0.11

0.51

1.17

2.41

11.18 52

Heating

7,000

2.27

0.11

0.51

1.17

2.16

10.02 52

PCH-2.5GKHA

1

Cooling

7,400

3.24

0.11

0.51

1.17

3.13

14.67/5.23 54 / 34

Heating

8,400

3.03

0.11

0.51

1.17

2.92

13.68/4.88 54 / 34

PCH-3GKHA

1

Cooling

9,900

3.31

0.14

0.68

1.36

3.17

5.29 37

Heating

10,350

3.30

0.14

0.68

1.36

3.16

5.28 37

PCH-4GKHSA

1

Cooling

12,200

4.39

0.20

0.96

2.0

4.19

7.32 49

Heating

13,700

4.33

0.20

0.96

2.0

4.13

7.21 49

PCH-5GKHSA

1

Cooling

14,400

4.84

0.20

0.96

2.0

4.64

8.10 68

Heating

14,800

4.76

0.20

0.96

2.0

4.56

7.96 68

PCH-6GKHSA

1

IndoorOutdoor

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

Mode Capacity (W) Total Input (kW)

Service Ref.

Cooling

5,350

2.25

0.09

0.41

1.15

2.16

9.78 44

Heating

6,150

2.27

0.09

0.41

1.15

2.18

9.87 44

PCH-2GKHA

1

Cooling

6,950

2.56

0.12

0.53

1.22

2.44

10.94 52

Heating

7050

2.32

0.12

0.53

1.22

2.20

9.86 52

PCH-2.5GKHA

1

Cooling

7,450

3.26

0.12

0.53

1.22

3.14

14.22 / 5.21 56 / 36

Heating

8,450

3.05

0.12

0.53

1.22

2.93

13.27 /4.86 56 / 36

PCH-3GKHA

1

Cooling

9,950

3.34

0.15

0.69

1.42

3.19

5.23 39

Heating

10,400

3.33

0.15

0.69

1.42

3.18

5.22 39

PCH-4GKHSA

1

Cooling

12,300

4.42

0.22

1.01

2.10

4.20

7.05 51

Heating

13,800

4.37

0.22

1.01

2.10

4.15

6.97 51

PCH-5GKHSA

1

Cooling

14,450

4.91

0.22

1.01

2.10

4.69

7.87 71

Heating

14,900

4.79

0.22

1.01

2.10

4.57

7.67 71

PCH-6GKHSA

1

IndoorOutdoor

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

Mode Capacity (W) Total Input (kW)

Service Ref.

Cooling

5,400

2.30

0.10

0.43

1.20

2.20

9.86 45

Heating

6,200

2.32

0.10

0.43

1.20

2.22

9.95 45

PCH-2GKHA

1

Cooling

7,000

2.59

0.13

0.55

1.27

2.46

10.68 52

Heating

7,100

2.36

0.13

0.55

1.27

2.23

9.78 52

PCH-2.5GKHA

1

Cooling

7,500

3.28

0.13

0.55

1.27

3.15

13.82 / 5.16 58 / 37

Heating

8,500

3.07

0.13

0.55

1.27

2.94

12.89 / 4.81 58 / 37

PCH-3GKHA

1

Cooling

10,000

3.36

0.16

0.70

1.48

3.20

5.24 40

Heating

10,450

3.35

0.16

0.70

1.48

3.19

5.22 40

PCH-4GKHSA

1

Cooling

12,400

4.45

0.24

1.06

2.20

4.21

6.89 53

Heating

13,900

4.40

0.24

1.06

2.20

4.16

6.81 53

PCH-5GKHSA

1

Cooling

14,500

4.97

0.24

1.06

2.20

4.73

7.74 74

Heating

15,000

4.82

0.24

1.06

2.20

4.58

7.50 74

PCH-6GKHSA

1

[7,280]

[3.40]

[8,760]

[4.03]

[10,160]

[4.79]

[12,620]

[5.57]

[16,220]

[6.85]

[17,320]

[7.28]

[7,440]

[3.56]

[7,600]

[3.72]

[9,200]

[4.46]

[10,600]

[5.17]

[13,150]

[6.05]

[16,900]

[7.40]

[18,000]

[7.82]

[8,980]

[4.25]

[10,380]

[4.98]

[12,880]

[5.81]

[16,560]

[7.13]

[17,660]

[7.55]

Indoor

……

230V 50Hz 1phase

Outdoor… 230V 50Hz 1phase / 400V 50Hz 3phase

Indoor

……

240V 50Hz 1phase

Outdoor… 240V 50Hz 1phase / 415V 50Hz 3phase

14

4. STANDARD OPERATION DATA

Rating Conditions (JIS B8616)

Electrical circuit Total Refrigerant circuit

Indoor side

Outdoor

side

Capacity Input

Indoor unit Service Ref.

Phase, Hz Volts Amperes

Outdoor unit

Service Ref.

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

Intake air temperature

Discharge air temperature

Intake air temperature

Mode

Service Ref.

SHF

BF

W

KW

V A

Mpa·G(Of/F·G) Mpa·G(Of/F·G)

!C !C !C

m DB !C WB !C DB !C DB !C WB !C

Cooling

5,400

2.30

0.43

9.86

1.92

0.47

87 50

3.8 5

27 19

11.5 35 24

0.68

0.11

Heating

6,200

2.32

0.43

9.95

1.90

0.37

89 —

-2.7 5

20 15

44.8 7 6

— —

PCH-2GKHA

1

PCH-2GKHA

1

1, 50

240

PUH-2VKA

2

1, 50

240

Cooling

7,000

2.59

0.55

10.68

2.05

0.53

85 53

6.9 5

27 19

12.4 35 24

0.69

0.14

Heating

7,100

2.36

0.55

9.78

1.73

0.38

77

—

-2.1 5

20 15

40.4 7 6

— —

PCH-2.5GKHA

1

PCH-2.5GKHA

1

1, 50

240

PUH-2.5VKA2

1, 50

240

Cooling

7,500

3.28

0.55

13.82/ 5.16

2.04

0.43

87 53

1.6 5

27 19

11.1 35 24

0.66

0.15

Heating

8,500

3.07

0.55

12.89/ 4.81

1.94

0.36

83 —

-2.9 5

20 15

44.8 7 6

— —

PCH-3GKHA

1

PCH-3GKHA

1

1, 50

240

PUH-3VKA

2

PUH-3YKA2

1/3, 50

240 / 415

Cooling

10,000

3.36

0.70

5.24

1.83

0.50

78 48

6.7 5

27 19

11.1 35 24

0.68

0.12

Heating

10,450

3.35

0.70

5.22

1.72

0.39

75 —

-1.0 5

20 15

42.1 7 6

— —

PCH-4GKHSA

1

PCH-4GKHSA

1

1, 50

240

PUH-4YKSA3

3, 50

415

Cooling

12,400

4.45

1.06

6.89

1.92

0.48

75 50

4.4 5

27 19

12.4 35 24

0.73

0.07

Heating

13,900

4.40

1.06

6.81

1.78

0.37

70 —

-2.8 5

20 15

42.4 7 6

— —

PCH-5GKHSA

1

PCH-5GKHSA

1

1, 50

240

PUH-5YKSA3

3, 50

415

Cooling

14,500

4.97

1.06

7.74

1.97

0.45

74 51

2.6 5

27 19

10.0 35 24

0.65

0.14

Heating

15,000

4.82

1.06

7.50

1.80

0.38

69 —

-1.8 5

20 15

44.9 7 6

— —

PCH-6GKHSA

1

PCH-6GKHSA

1

1, 50

240

PUH-6YKSA2

3, 50

415

[7,600]

[3.72]

[9,200]

[4.46]

[10,600]

[5.17]

[13,150]

[6.05]

[16,900]

[7.40]

[18,000]

[7.82]

(19.6)

(4.8)

(19.4)

(3.77)

(20.9)

(5.4)

(17.6)

(3.87)

(20.8)

(4.39)

(19.8)

(3.67)

(18.7)

(5.1)

(17.5)

(3.98)

(19.6)

(4.90)

(18.1)

(3.77)

(20.1)

(4.59)

(18.4)

(3.88)

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·G)=10.2(

O

Of/F

·G)

15

5

1. INDOOR UNIT PCH-2GKHA

1

180

210

157

15

85

182 (3/8F) liquid

201 (5/8F) gas

241 (Drainage)

Air intake

918

254

680

Electrical box

226

70

525

928

352

263

171

138

86

46 175

131

38

3879

161

32

179

42

6~7

Celling

Electrical box

[Front view]

When electrical

box is pulled

down

3

2

8

5

1

4

6

2

7

17

150

140

70

320

80

933 (suspension bolt pitch)

983

1000

Air outlet

81

904

76

1 Drainage pipe connection (26mm I.D.) 5 Refrigerant-pipe connection (liquid pipe side/flared connection)

2 Drainage pipe connection (for the left arrangement) 6 Knock out hole for upper drain pipe arrangement

3 Knock out hole for left drain-piping arrangement 7 Knock out hole for left drain pipe arrangement

4 Refrigerant-pipe connection (gas pipe side/flared connection) 8 Knock out hole for wining arrangement

NOTES:

1. Use M10 or W3/8 screws for anchor bolt.

2. Please be sure when installing the drain-up machine (option parts).

refrigerant pipe will be only upper drain pipe arrangement.

OUTLINES AND DIMENSIONS

16

PCH-2.5GKHA1 PCH-3GKHA1

1240 (suspension bolt pitch)

140

150

320 80

17

70

6

1290

1214

210 180

81 76

1310

Air outlet

1228

680

254

Air intake

85

182

201

241

15

157

(3/8F liquid)

(5/8F gas)

(Drainage)

3

2

8

5

1

4

Electrical box

When electrical

box is pulled

down

[ Front view ]

Celling

32

179

161

38

3879

42

6~7

525

1235

416

263

171

138

86

131

175 1

46

7

2

Electrical box

70

226

1 Drainage pipe connection (26mm I.D.) 5 Refrigerant-pipe connection (liquid pipe side/flared connection)

2 Drainage pipe connection (for the left arrangement) 6 Knock out hole for upper drain pipe arrangement

3 Knock out hole for left drain-piping arrangement 7 Knock out hole for left drain pipe arrangement

4 Refrigerant-pipe connection (gas pipe side/flared connection) 8 Knock out hole for wining arrangement

NOTES:

1. Use M10 or W3/8 screws for anchor bolt.

2. Please be sure when installing the drain-up machine (option parts).

refrigerant pipe will be only upper drain pipe arrangement.

17

PCH-4GKHSA1

1 Drainage pipe connection (26mm I.D.) 5 Refrigerant-pipe connection (liquid pipe side/flared connection)

2 Drainage pipe connection (for the left arrangement) 6 Knock out hole for upper drain pipe arrangement

3 Knock out hole for left drain-piping arrangement 7 Knock out hole for left drain pipe arrangement

4 Refrigerant-pipe connection (gas pipe side/flared connection) 8 Knock out hole for wining arrangement

NOTES:

1. Use M10 or W3/8 screws for anchor bolt.

2. Please be sure when installing the drain-up machine (option parts).

refrigerant pipe will be only upper drain pipe arrangement.

6

(3/8F liquid)

(5/8F-gas)

(Drainage)

182

245

87

16

320 80

70

140

150

17

217

270

207

680

81 96

254

1

4

1

5

8

Celling

[ Front view ]

93

Electrical box

236

192

38 140

160

1310

1214

1240 (suspension bolt pitch)

45

Air outlet

86

138

171

263

38

687

1235

70

2

229

1228

Air intake

7

525

6~7

Electrical box

2

3

42 239

When electrical

box is pulled

down

18

1535

680

254

Air intake

1524

270

207

81 96

1620

Air outlet

1547(suspension bolt pitch)

140

150

320 80

18

70

6

87

182

198

245

16

217

(3/8F liquid)

(3/4F gas)

(Drainage)

3

2

8

5

1

4

Electrical box

When electrical

box is pulled

down

[ Front view ]

Celling

93

160

38

38 140

42 239

6~7

525

1545

687

263

171

138

86

192

236

1

45

7

2

Electrical box

70

229

PCH-5GKHSA1 PCH-6GKHSA1

1 Drainage pipe connection (26mm I.D.) 5 Refrigerant-pipe connection (liquid pipe side/flared connection)

2 Drainage pipe connection (for the left arrangement) 6 Knock out hole for upper drain pipe arrangement

3 Knock out hole for left drain-piping arrangement 7 Knock out hole for left drain pipe arrangement

4 Refrigerant-pipe connection (gas pipe side/flared connection) 8 Knock out hole for wining arrangement

NOTES:

1. Use M10 or W3/8 screws for anchor bolt.

2. Please be sure when installing the drain-up machine (option parts).

refrigerant pipe will be only upper drain pipe arrangement.

19

2. REMOTE CONTROLLER Unit : mm(inch)

18

130

Rear side wiring arrangement opening.

120

FILTER

CHECK MODE

TEST RUN

FILTER

CHECK MODE

TEST RUN

46

83.5

SW18

SW17

CAUTION

20

WIRING DIAGRAM

6

PCH-2GKHA1/PCH-2.5GKHA1/PCH-3GKHA1 PCH-4GKHSA1/PCH-5GKHSA1/PCH-6GKHSA1

240V

230V

220V

230V

220V

YELLOW ORANGE RED

1

ON OFF

2

3 4

1

ON OFF

2

3 4

[Emergency operation procedure] (2) Turn on the outdoor unit side circuit breaker, then indoor unit side circuit breaker in this order. (3) During emergency operation indoor fan runs at high speed but automatic vane remains stop. (4) If vane closed, open the vane by hand slowly. (5) Thermostat will not function. Cold air belows out for defrosting during heating thus do not operate defrosting for a long time. (6) Emergency cooling should be limited to 10 hours maximum.

(The indoor unit heat exchanger may freeze).

(7) If the microcomputer doctor detects the abnormality of the drain-up machine during cooling mode, do not execute emergency

operation.(If causes drain overflow)

NOTES :

1. Since the indoor fan motor (MF 1.2) is connected with 230~240V power. IF 220V power is used. change the dip switch (SWS<1.B>)on the indoor controller board showing fig:w1.

2. Since the indoor transformer (T)is connected with 240Vpower.if 220.230V power is used. Change the wiring connection showing fig:w2.

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

4. Indoor and outdoor connecting wires are made with polarities. make wiring matching terminal numbers.

5. Symbols used in wiring diagram above are. : Connector,

/

: Terminal block.

6. Emergency operation

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

[Check items] (1)Make sure that no other trouble exist the outdoor unit. Trouble with the outdoor unit prevents emergency operation.

(If any trouble exists the outdoor unit error code “P8”will be displayed on the remote controller and the trouble position will be shown on the outdoor controller LED. See electric wiring diagram of the outdoor unit for details.)

(2)Make sure that there is no trouble with the indoor fan.

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

[Emergency operation procedure] (1)Set the dip switch (SW3<I.B>) on the indoor controller board to on and off for cooling and - on for heating.

2121

fig:w1

Indoor fan motor (MF) for

fig:w2

When power supply is

SYMBOL

C

NAME

FAN MOTOR CAPACITOR

CN1<R.B>

PROGRAM TIMER CONNECTOR

CN2<R.B>

REMOTE SWITCH CONNECTOR

CN2L<I.B>

LOSSNAY CONNECTOR

CNP<I.B>

DRAIN-UP MACHINE CONNECTOR

CN50<I.B>

DRAIN SENSOR CONNECTOR

CN51<I.B>

CENTRALLY CONTROL CONNECTOR

F1,2<I.B>

FUSE(6.3A 250V)

FS1,2

H

HEATER I.B J1<I.B> J5<I.B>

INDOOR CONTROLLER BOARD

FUNCTION SELECTOR JUMPER RESISTORS

MODEL SELECTOR JUMPER RESISTORS

SYMBOL

J9<I.B>

NAME

MODEL SELECTOR JUMPER RESISTORS

LED1<I.B>

DC 12V POWER LED

LED2<I.B>

DC 5V POWER LED

MF

FAN MOTOR VANE MOTOR

REMOTE CONTROLLER BOARD ROOM TEMPERATURE THERMISTOR

(0

:/15k", 25:/5.4k" DETECT)

INDOOR COIL THERMISTOR (0:/15k", 25:/5.4k" DETECT) ADDRESS SELECTOR EMERGENCY OPERATION SWITCH TWIN/TRIPLE SELECTOR MODEL SELECTOR

SYMBOL

SW17<R.B>

NAME

ADDRESS SELECTOR

SW18<R.B>

FUNCTION SELECTOR

T

TRANSFORMER

TB2

POWER SUPPLY TERMINAL BLOCK INDOOR/OUTDOOR CONNECTING WIRE TERMINAL BLOCK

REMOTE CONTROLLER

TERMINAL BLOCK

LINE TRANSMISSION FAN MOTOR RELAY

VARISTOR HEATER THERMAL SWITCH HEATER CONTACTOR OPTION DRAIN-UP MACHINE OPTION DRAIN-UP SENSOR

THERMAL FUSE(98:10A:2GKHA / 117:16A: 4GKHA110

:16A:2.5,3GKHA.5.6GKHSA)

MV R.B RT1

RT2

SW2<I.B> SW3<I.B> SW6<I.B> SW7<I.B>

TB4 TB5,6

X4<I.B> ZNR 26H 88H DP DS

I.B

OFF

MF

C

WHT

BLK

RED

FAN1

135

X4

SW2

123456

J5

2

42

ON

DP

CNP

D.U.M

ZNR

J9

13

(OPTION)

31

POWER

SW6

1234

CND

F2 F1

1234

BLU

RED

3

LED1 12V POWER

SW3SW7

ON

OFF

12

J1

456 97108

RED

YLW

WHT

13

ORN

CNT

TRANS

LED2 5V POWER

HEATER

220V 230V 240V

YLW

CN24

T

6

CN6V

VAN E

1

POWER

CENTRALLY

CONTROL

CN51

DRAIN

CN50

10VAC

14.3VAC 6

RED

43211

REMOCON

CN40

1234

CN21

CN20

5

INTAKE

1234

BRN

TO

REMOCON

OUTDOOR

PIPE

LOSSNAY

GRN/YLW

CN4T

TRANS

CN22

CN30

12

CN2L

TB2

6

MV

BLU BLU

12

BRN ORN YLW

123

BLK BLK

12

RT1

L

POWER SUPPLY

N

~

(1 PHASE) AC220-240V 50Hz AC220V 60Hz

INDOOR UNIT

REMOTE CONTROLLER

TRANSMISSION WIRES

TB5

DC12V

2 1

OUTDOOR UNIT

TB4

3

TO OUTDOOR UNIT

2

CONNECTING WIRES

1

DC12V

RT2

54

GRY

DRAIN

CN50

3

BLK

2 1

DS(OPTION)

MODELS

SW7

MODELS

SW7

L N

ON OFF

1234

OFF

1234

RED

RED BLU

TB2

I.B

HEATER

CN24

2 1

PCH-2~6GKH(S)A (with heater)

3GK(H)

2.5GK(H)2GK(H) ON

OFF

1234

6GK(H)5GK(H)4GK(H)

ONON OFF

1234

88H

RED

35

BLU

YLW YLW

6

88H

R.B

SW17

ON OFF

87654321

ON OFF

FS2

FS1

21

RED

6

GRY

5

1

RED

SW18

TB6

OFF ON

CN1

54 12

CN2

312

4321

BG79Y189H03-A

H

26H

B.2A.1

3

21

7

REFRIGERANT SYSTEM DIAGRAM

Indoor unit

Indoor heat exchanger

Refrigerant pipe (option)

15.88

mm( 5/8")

(with heat insulator)

Flexible tube

Ball valve

Strainer

4-way valve

Oil separator

Service port

High pressure control switch

Outdoor unit

Outdoor heat exchanger

Outdoor coil thermistor

(RT)

Capillary tube

Restrictor valve

Strainer

Bypass valve

Compressor

Accumulator

Ball valve (with service port)

Refrigerant pipe (option)

9.52

mm( 3/8")

(with heat insulator)

Capillary tube

Restrictor valve

Distributor with strainer

Indoor coil thermistor RT2

Strainer

Flared connection

<R.V.coil> Heating ON Cooling OFF

PCH-2(O.D.3.2 ✕ I.D.1.6-R230) PCH-2.5(O.D.3.2 ✕ I.D.1.8-R430) PCH-3(O.D.4.0 ✕ I.D.2.0-R280)

Indoor unit

Indoor heat exchanger

Refrigerant pipe (option)

19.05

mm( 3/4)

(with heat insulator)

Flexible tube

Ball valve

Strainer

4-way valve

Oil separator

Service port

High pressure control switch

Outdoor unit

Outdoor heat exchanger

Capillary tube

Restrictor valve

Strainer

Bypass valve

Compressor

Accumulator

Ball valve (with service port)

Refrigerant pipe (option)

9.52

mm( 3/8")

(with heat insulator)

Capillary tube

Restrictor valve

Distributor with strainer

Strainer

Flared connection

(O.D.3.2 ✕ I.D.2.0-R820) ✕ 2

(O.D.4.0 ✕ I.D.2.0-R350)

Thermal switch

Indoor unit

Indoor heat exchanger

Refrigerant pipe (option)

19.05

mm( 3/4")

(with heat insulator)

Flexible tube

Ball valve

Strainer

4-way valve

Oil separator

Service port

High pressure control switch

Outdoor unit

Outdoor heat exchanger

Capillary tube

Restrictor valve

Strainer

Bypass valve

Compressor

Accumulator

Ball valve (with service port)

Refrigerant pipe (option)

9.52

mm( 3/8")

(with heat insulator)

Capillary tube

Distributor with strainer

Strainer

Flared connection

PCH-5 O.D.4.0 ✕ I.D.2.4-R270

Capillary tube

PUH-5 (O.D.4.0 ✕ I.D.2.4-R840)✕ 2 PUH-6 (O.D.4.0 ✕ I.D.2.4-R1200)✕ 2

PCH-6 O.D.4.0 ✕ I.D.3.0-R300

Restrictor valve

Refrigerant flow in cooling Refrigerant flow in heating

Unit : mm

PCH-2(O.D.4.0 ✕ I.D.2.0-R430) PCH-2.5(O.D.4.0 ✕ I.D.2.4-R1550) PCH-3(O.D.4.0 ✕ I.D.2.4-R1070)

Outdoor coil thermistor

(RT)

Outdoor coil thermistor

(RT)

PCH-2GKHA1/PUH-2VKA2 PCH-2.5GKHA1/PUH-2.5VKA2 PCH-3GKHA1/PUH-3VKA2,PUH-3YKA2

PCH-4GKHSA1/PUH-4YKSA3

PCH-5GKHSA1/PUH-5YKSA3 PCH-6GKHSA1/PUH-6YKSA2

22

OPERATION FLOW-CHART

8

START

Power circuit

breaker

Check SW

ON twice

Operation SW

ON

“OFF” timer

“ON” timer

STOP

Set time complete

Set time

complete

1

NO

NO NO

NO

YES

w1

YES

PROTECTION DEVICE

SELF HOLD RELEASE

Remote controller

indicator lamp OFF

Trouble STOP

Remote controller

operation display

Operating mode

(COOL)

Operating mode

(DRY)

Operating mode

(HEAT)

Operating mode

(FAN)

Auto COOL/HEAT

operation

COOL operation

DRY operation

HEAT operation

FAN operation

Trouble

PROTECTION DEVICE

SELF HOLD

Remote controller

trouble display

Indoor side

Outdoor side

Fan STOP

Auxiliary heater OFF

Compressor OFF

Fan STOP

Four-way valve OFF

w2

w3

w6

w4

w5

w7

MAIN OPERATION

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-Indoor coil thermistor malfanction

● P4-Drain sensor malfunction

● P5-Drain overflow

● P6-Coil frost/overheat protection

● P7-System error

● P8-Outdoor unit trouble

w3 The CHECK swich will show 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 (6 minutes …heating mode) time-delay functions after compressor stops. w6 FAN or AUTO mode is selected by the indoor dipswitch setting. w7 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)

23

COOLING OPERATION

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.

w10 After 3 minute compressor operation, if the indoor coil thermistor reads -15°C or below for 3 minutes, the compressor

will stop for 6 minutes.

w11 Cooling area : Indoor coil temperature is more than 5 degrees above the room temperature.

Heating area : Indoor coil temperature is more than 5 degrees below the room temperature. FAN area : Indoor coil temperature is within 5 degrees either way of the room temperature.

COOL operation

Four-way valve/OFF

NO

Vane setting notch

Initial

COOLING

w8

Downward discharge

Vane horizontal

w9

YES

Vane intial

setting

Vane 40 deg downward angle 60 deg downward angle

YES

Fan speed

LOW

YES

1 hour

YES

airflow

NO

Compressor

thermostat

ON

Allowance

cancel

NO

YES

NO

YES

NO

w10

w11

3-minute time delay

NO

6-minute

time delay

NO

3-minute

compressor operation

YES

Coil frost

prevention

NO

Cooling area

YES

NO

Allowance

period

NO

6 minute

time delay

Allowance set

YES

Coil frost protection

YES

NO

10-minute

compressor operation

YES

Allowance cancel

Coil frost protection

NO

16-minute

compressor operation

YES

Indoor pipe

temperature is

1!C or lower

NO

Compressor ON

1

YES

Coil frost

prevention

Compressor OFF

Indoor coil tempreature is 10!C or higher

3-minute

time delay

Coil frost

prevention release

NO

YES

NO

1 min continue

FAN speed

YES

LOW

FAN speed LOW 5 min

elapse

NO

YES

Outdoor unit

trouble