Mitsubishi PLH-1.6KKHB.UK, PLH-2.5KKHB.UK, PLH-2KKHB.UK Service Manual

TECHNICAL & SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP, AIR CONDITIONERS

Indoor unit [Model names]

PLH-1.6KKHB PLH-2KKHB PLH-2.5KKHB

[Service Ref.]

PLH-1.6KKHB

·

UK

PLH-2KKHB

·

UK

PLH-2.5KKHB

·

UK

No. OC147

1997

Ceiling CassettesSeries PLH

This manual does not cover the following outdoor units. When servicing them, please refer to the service manual No.OC150 and this manual in a set.

[Service Ref.] PUH-1.6VKA3·UK PUH-2VKA

2

·UK

PUH-2.5VKA

2

·UK

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

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

3. SPECIFICATIONS...............................6

4. DATA ...................................................9

5. OUTLINES AND DIMENSIONS ........13

6. WIRING DIAGRAM ...........................15

7.

REFRIGERANT SYSTEM DIAGRAM .....

16

8. OPERATION FLOW-CHART ............17

9. MICROPROCESSOR CONTROL .....21

10. TROUBLESHOOTING ......................43

11. 4-WAY AIR FLOW SYSTEM .............51

12. SYSTEM CONTROL .........................52

13. DISASSEMBLY PROCEDURE.........57

14. PARTS LIST......................................60

15. OPTIONAL PARTS ...........................64

CONTENTS

INDOOR UNIT

FILTER

CHECK MODE

TEST RUN

REMOTE CONTROLLER

The Slim Line. From Mitsubishi Electric.

2

1 FEATURES

1.PURSUING CONPACTNESS

(1)Panel size and body volume reduced to 64% of previous models

The width and depth of the panel have been reduced by 19cm respectively, resulting in a compact model which fits smaller environments (like shops) perfectly.

(2)Multi-application panels flexibly adapt to installation conditions.

Space panel and Wide panel may be installed on ceilings with shallow depth using the exiting opening .

2."SMUDGE-FREE", PRECISELY TARGETED AIRFLOW SYSTEM

The new control system regulates airflow to prevent smudging. A projection inside the air passage distributes air evenly over the top and bottom of the vane. Two projections on the air outlet work to prevent cooled air from rising to the celling, and also to stop outside air being dragged into the cooled air stream.

3.AIRFLOW ADJUSTABLE TO ANY INDOOR ENVIRONMENT

Airflow can be adjusted according to celling height and the number of air outlets. "Wide Zoming Flow" creates anoptimum airflow for any indoor environment.

4.A FURTHER REFINEMENT OF COMFORT WITH NOISE SUPPRESION

The celling 4-way airflow cassette has a special "silent-design". The "2-Tap"system allows a choice between silent and standard modes according to the height of the cellig. For ordinary residenced which have a low celling, selection of the silent mode will result in remarkable noise reductions.

5.ECONOMICAL AND EASY MAINTENANCE

(1)Push-open grill

Filter clogging is widely recognized as a cause of reduced perfomance, but up until now it has been troublesome to clean filters. With the "push-open grill" the fillter can be smoothly opened out at the push of a button, enabling speedy cleaning.

(2)An unprecedented level of vane-cleaning

The unique airflow system prevents the intake of indoor air. Dewing therefore does not occur, and the vane is flockless. The resulting level of dirt on the vane due to tobacco smoke, dust, etc. is very light,and can be wiped off easily with a neutral detergent

(3)Long-life fillter

This new celling 4-way airflow cassette employs a long life fillter which requires no maintenance for up to 2,500 hours of operation in general office environments. It adds uo to an ideal blend of comfort and low maintenance.

Indoor unit

Ceiling Cassettes

Series PLH

Remote controller

FILTER

CHECK MODE

TEST RUN

Service Ref.

Cooling capacity/Heating capacity

W Btu/h

PLH-1.6KKHB.UK 4,400/4,650[6,050] 15,000/15,900[20,600] PLH-2KKHB.UK 5,400/5,800[7,200] 18,400/19,800[24,600] PLH-2.5KKHB.UK 6,300/[7,200/9,300] 21,500/24,600[31,700]

3

6.COMPACT DIMENSIONS MEAN EASY INSTALLATION

(1)Carefree suspension work with lightweight unit

The new unit weighs in at 20kg (9kg lighter than the previous model) and is easy to handle and install. What's more, suspension work is facillitated by compact dimensions ensuring a snug fit.

(2)Smooth installation with "one-direction"bolts

Suspension bolts can be fixes consistently from one direction easing suspension work.

(3)Trouble-free fitting work with slender refrigerant piping

Refrigerant piping has been reduced in size, and pipe-curving work at the installation site can now be completed quickly and economically. In addition, refrigerant and drain piping are set at different corners, which means that flare connections and drain piping heat insulation work can be smoothly and reliably implemented.

(4)Easy-access terminal and control panels for efficient wiring

When performing wiring work, progress can be checked on the power source terminal and control panels simply by removing the electrical parts cover. Adress setting can also be done easily from beneath at a convenient angle.

(5)"One-push"to provisionally position front panel

Panel weight has been redused from 7kg to 3.7kg. The previous 3-step process for provisionally positioning the panel has been streamlined, and now a simple "one-push" action at the diagonal corners fixed it into place, resulting in major time-saving.

2 PART NAMES AND FUNCTIONS

● Indoor (Main) Unit

PLH-1.6KKHB·UK PLH-2KKHB·UK PLH-2.5KKHB·UK

Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction.

Grill

Filters Remove dust and pollutants from inhaled air

Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying.

Downward Air Outlet Sets airflow downward automatically during heating.

Air Intake Inhales air from room.

4

● Remote controller

● Operation buttons

Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

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.

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.

4

FILTER

CHECK MODE

TEST RUN

5

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

240KA

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

This lamp lights when electricity is supplied to the unit.

display

This displays the selected setting temperature.

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

This displays the air direction.

● Display

In this display example on the bottom left, a condition where all display lamps light is shown for explanation purposes although this differs from actual operation.

display

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

CHECK MODE

TEST RUN

Display

FILTER

This lamp lights when the filter need to be cleaned.

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

The selected fan speed is displayed.

Operation lamp

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

6

3

SPECIFICATIONS

Service Ref.

Item Function

Capacity

Btu/h

W

Total input kW

kW

INDOOR UNIT

Service Ref.

Power supply(phase, cycle,voltage)

Input

ARunning current

AStarting current External finish Heat exchanger

Booster heater Operation control & Thermostat

Fan(drive) x No.

kWFan motor output

K/min(CFM)Airflow(Low-High)

kW

mmAq,Pa

Noise level(Low-High) dB(A) Cond. drain conn. O.D.

Weight

mm,(in.)

Dimensions

mm,(in.)W mm,(in.)D mm,(in.)

kg,(lbs)

H

External static pressure

kW

OUTDOOR UNIT

REEFRIGERANT PIPING

Service Ref.

Power supply (phase, cycle, voltage)

Input

ARunning current

AStarting current External finish Refrigerant control Compressor

Fan motor output

Heat exchanger

Model

Starter type

kW

kg,(lbs)

Motor output

Protection devices

kW

Airflow K/min(CFM)

Fan(drive) x No.

Defrost method Noise level

Weight Refrigerant

Dimensions

mm,(in.)W

Pipe size O.D.

mm,(in.)Liquid mm,(in.)Gas

Connection method

Indoor side Outdoor side

Between the indoor & outdoor unit

Height difference Piping length

mm,(in.)D mm,(in.)

kg,(lbs)

H

Charge

dB(A)

PLH-1.6KKHB.UK

Cooling

15,000

4,400

1.59

Heating

15,900[20,600]

4,650[6,050]

1.51[2.91]

0.15

0.64

0.70

0.10[1.50]

0.45[6.28]

0.50[6.63]

UNIT : 660(26) UNIT : 660(26) UNIT : 253(10)

UNIT : 20(44)

PANEL : 760(30) PANEL : 760(30)

PANEL : 30(1-1/8)

PANEL :3.7(8)

1.44

6.74

1.41

6.60

PLH-1.6KKHB.UK

Single. 50Hz. 220-240V

Galvanized sheets with gray heat insulation

Plate fin coil

Turbo fan (direct) x 1

0.030

13-16(460-565)

0(direct blow)

[1.4]

Remote controller & built-in

32-37

32(1-1/4)

PUH-1.6VKA

3.UK

Single. 50Hz. 220-240V

33

Munsell 5Y 7/1

Capillary tube

Hermetic

RH247VFC

1.2

Line start

Inner thermostat, High pressure switch

Plate fin coil

Propeller (direct) x1

0.065

45(1,590)

Reverse cycle

49

870(34-1/4)

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

650(25-5/8)

53(117)

R-22

2.2(4.8)

9.52 (3/8)

15.88(5/8) Flared Flared

Max. 40m Max. 40m

7

Service Ref.

Item Function

Capacity

Btu/h

W

Total input kW

Service Ref.

Power supply(phase, cycle,voltage)

Input

kW

ARunning current

AStarting current External finish Heat exchanger

Fan(drive) x No.

kWFan motor output

K/min(CFM)Airflow(Low-High)

Booster heater

INDOOR UNIT

External static pressure

mmAq,Pa

kW Operation control & Thermostat Noise level(Low-High) dB(A) Cond. drain conn. O.D.

mm,(in.) mm,(in.)W

Dimensions

H

Weight

mm,(in.)D mm,(in.)

kg,(lbs)

Service Ref.

Power supply (phase, cycle, voltage)

Input

kW

ARunning current

AStarting current External finish Refrigerant control Compressor

Model Motor output

kW Starter type Protection devices

Heat exchanger

OUTDOOR UNIT

Fan(drive) x No. Fan motor output

kW Airflow K/min(CFM)

Defrost method Noise level

dB(A)

mm,(in.)W

Dimensions

H

Weight

mm,(in.)D mm,(in.)

kg,(lbs)

Refrigerant

Charge

Pipe size O.D.

Connection method

Between the indoor & outdoor unit

REEFRIGERANT PIPING

Indoor side Outdoor side Height difference Piping length

kg,(lbs) mm,(in.)Liquid mm,(in.)Gas

PLH-2KKHB.UK

Cooling

18,400

5,400

2.34

Heating

19,800[24,600]

5,800[7,200]

2.32[3.72]

PLH-2KKHB.UK

Single. 50Hz. 220-240V

0.14

0.65

0.72

0.10[1.50]

0.45[6.28]

0.50[6.63]

Galvanized sheets with gray heat insulation

Plate fin coil

Turbo fan (direct) x 1

0.030

13-16(460-565)

0(direct blow)

[1.4]

Remote controller & built-in

32-37

32(1-1/4) UNIT : 660(26) UNIT : 660(26) UNIT : 253(10)

UNIT : 20(44)

PUH-2VKA

PANEL : 760(30) PANEL : 760(30)

PANEL : 30(1-1/8)

PANEL :3.7(8)

2.UK

Single. 50Hz. 220-240V

2.20

9.86

2.22

9.95

45

Munsell 5Y 7/1

Capillary tube

Hermetic

NH38VMD

1.7

Line start

Inner thermostat, HP switch

Plate fin coil

Propeller (direct) x1

0.065

45(1590)

Reverse cycle

49

870(34-1/4)

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

650(25-5/8)

64(141)

R-22

2.2(4.8)

9.52 (3/8)

15.88(5/8) Flared Flared

Max. 40m Max. 40m

8

Service Ref.

Item Function

Capacity

Btu/h

W

Total input kW

kW

INDOOR UNIT

Service Ref.

Power supply(phase, cycle,voltage)

Input

ARunning current

AStarting current External finish Heat exchanger

Booster heater Operation control & Thermostat

Fan(drive) x No.

kWFan motor output

K/min(CFM)Airflow(Low-High)

kW

mmAq,Pa

Noise level(Low-High) dB(A) Cond. drain conn. O.D.

Weight

mm,(in.)

Dimensions

mm,(in.)W mm,(in.)D mm,(in.)

kg,(lbs)

H

External static pressure

kW

OUTDOOR UNIT

REEFRIGERANT PIPING

Service Ref.

Power supply (phase, cycle, voltage)

Input

ARunning current

AStarting current External finish Refrigerant control Compressor

Fan motor output

Heat exchanger

Model

Starter type

kW

kg,(lbs)

Motor output

Protection devices

kW

Airflow K/min(CFM)

Fan(drive) x No.

Defrost method Noise level

Weight Refrigerant

Dimensions

mm,(in.)W

Pipe size O.D.

mm,(in.)Liquid mm,(in.)Gas

Connection method

Indoor side Outdoor side

Between the indoor & outdoor unit

Height difference Piping length

mm,(in.)D mm,(in.)

kg,(lbs)

H

Charge

dB(A)

PLH-2.5KKHB.UK

Cooling

21,500

6,300

2.60

Heating

24,600[31,700]

7,200[9,300]

2.33[4.43]

0.14

0.61

0.67

0.10[2.20]

0.45[9.20]

0.50[9.55]

UNIT : 660(26) UNIT : 660(26) UNIT : 253(10)

UNIT : 21(46)

PANEL : 760(30) PANEL : 760(30)

PANEL : 30(1-1/8)

PANEL :3.7(8)

2.46

10.68

2.23

9.78

PLH-2.5KKHB.UK

Single. 50Hz. 220-240V

Galvanized sheets with gray heat insulation

Plate fin coil

Turbo fan (direct) x 1

0.030

14-17(495-600)

0(direct blow)

[2.1]

Remote controller & built-in

35-39.5

32(1-1/4)

PUH-2.5VKA

2.UK

Single. 50Hz. 220-240V

52

Munsell 5Y 7/1

Capillary tube

Hermetic

NH41VMD

2.0

Line start

Inner thermostat, HP switch

Plate fin coil

Propeller (direct) x1

0.085

50(1764)

Reverse cycle

52

870(34-1/4)

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

850(34-1/4)

68(150)

R-22

2.8(6.2)

9.52 (3/8)

15.88(5/8) Flared Flared

Max. 50m Max. 50m

9

DATA4

1. PERFORMANCE DATA

1) COOLING CAPACITY

Note CA:Capacity (W)

P.C.:Power consumption (kW)

Cooling capacity correction factors

PLH-1.6KKHB.UK

PLH-2KKHB.UK

PLH-2.5KKHB.UK

Indoor intake

air

WB$C

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

Outdoor intake air DB$C

20

CA 4,439 4,726 5,017 5,310 5,448 5,800 6,157 6,517 6,356 6,767 7,183 7,603

P.C.

1.27

1.30

1.32

1.35

1.88

1.91

1.95

1.99

2.08

2.13

2.17

2.21

25

CA 4,317 4,602 4,899 5,209 5,299 5,648 6,012 6,392 6,182 6,589 7,014 7,458

P.C.

1.33

1.36

1.38

1.41

1.96

2.00

2.04

2.08

2.17

2.22

2.26

2.31

30

CA 4,159 4,434 4,724 5,028 5,104 5,442 5,798 6,171 5,955 6,349 6,764 7,199

P.C.

1.43

1.46

1.50

1.53

2.11

2.15

2.20

2.25

2.34

2.39

2.45

2.50

35

CA 3,990 4,258 4,542 4,840 4,897 5,226 5,574 5,940 5,713 6,097 6,503 6,930

P.C.

1.53

1.57

1.61

1.65

2.26

2.31

2.37

2.42

2.51

2.57

2.63

2.69

40

CA 3,812 4,074 4,352 4,645 4,678 5,000 5,341 5,700 5,472 5,841 6,232 6,645

P.C.

1.64

1.68

1.72

1.77

2.41

2.47

2.54

2.61

2.68

2.74

2.82

2.90

45

CA 3,624 3,882 4,154 4,442 4,447 4,764 5,099 5,451 5,207 5,571 5,954 6,359

P.C.

1.74

1.79

1.84

1.90

2.56

2.63

2.71

2.80

2.85

2.92

3.01

3.11

Service Ref.

Refrigerant piping length(one way)

30m

0.961

0.959

0.950

35m

0.956

0.950

0.940

40m

0.948

0.945

0.930

45m

—

0.920

50m

—

0.910

PLH-1.6KKHB.UK

PLH-2KKHB.UK

PLH-2.5KKHB.UK

5m

1.00

10m

0.993

0.992

0.989

15m

0.984

0.983

0.980

20m

0.978

0.970

25m

0.969

0.966

0.960

Service Ref.

Cooling performance curve(50Hz)

1.4

1.2

1.0

0.8

0.6

1.4

1.2

1.0

0.8

0.6

0.4

-5 5 15 253546 OUTDOOR DB(°C)

TOTAL INPUT (RATIO) CAPACITY (RATIO)

INDOOR WB(°C)

22 20 18 16

10

2) HEATING CAPACITY

Note CA:Capacity (W)

P.C.:Power consumption (kW)

Heating capacity correction factors

PLH-1.6KKHB.UK

PLH-2KKHB.UK

PLH-2.5KKHB.UK

Indoor intake

air

DB$C

15 20 25 15 20 25 15 20 25

Outdoor intake air WB$C

-10

CA 3,184 3,049 2,930 3,972 3,803 3,655 4,931 4,721 4,537

P.C.

1.03

1.11

1.18

1.58

1.71

1.81

1.59

1.71

1.82

-5

CA 3,650 3,506 3,364 4,552 4,373 4,196 5,651 5,429 5,209

P.C.

1.14

1.23

1.31

1.75

1.89

2.01

1.76

1.89

2.02

0

CA 4,160 4,003 3,844 5,188 4,993 4,795 6,441 6,198 5,952

P.C.

1.25

1.35

1.44

1.93

2.08

2.22

1.93

2.09

2.23

5

CA 4,714 4,538 4,370 5,880 5,661 5,451 7,299 7,027 6,767

P.C.

1.38

1.48

1.59

2.11

2.28

2.44

2.12

2.29

2.45

10

CA 5,312 5,112 4,942 6,625 6,376 6,165 8,225 7,916 7,653

P.C.

1.51

1.62

1.74

2.31

2.49

2.67

2.32

2.50

2.68

15

CA 5,952 5,724 5,560 7,424 7,139 6,935 9,216 8,863 8,609

P.C.

1.64

1.77

1.90

2.52

2.71

2.91

2.53

2.73

2.92

Service Ref.

Refrigerant piping length(one way)

30m

1.00

35m

0.998

40m

0.995

45m

—

0.993

50m

—

0.990

PLH-1.6KKHB.UK

PLH-2KKHB.UK

PLH-2.5KKHB.UK

5m

1.00

10m

1.00

15m

1.00

20m

1.00

25m

1.00

Service Ref.

Heating performance curve(50Hz)

1.4

1.2

1.0

0.8

0.6

1.4

1.2

1.0

0.8

0.6

0.4

-12-10 -5 0 5 10 15 OUTDOOR WB($C)

INDOOR DB ($C)

15 20 25

25 20 15

TOTAL INPUT (RATIO) CAPACITY (RATIO)

11

2. ELECTRICAL DATA

Indoor unit77220V 50Hz 1phase Outdoor unit7220V 50Hz 1phase

Indoor unit77230V 50Hz 1phase Outdoor unit7230V 50Hz 1phase

Indoor unit77240V 50Hz 1phase Outdoor unit7240V 50Hz 1phase

Indoor unit

Service Ref.

Outdoor unit

PLH-1.6KKHB.UK

PUH-1.6VKA

3.UK PUH-2VKA2.UK PUH-2.5VKA2.UK

PLH-2KKHB.UK

PLH-2.5KKHB.UK

Mode

Capacity (W)

Total Input (kW)

Input (kW)

Current (A)

Starting current (A)

Input (kW)

Current (A)

Starting current (A)

Outdoor unit Indoor unit

Indoor unit

Service Ref.

Outdoor unit

Mode

Capacity (W)

Total Input (kW)

Input (kW)

Current (A)

Starting current (A)

Input (kW)

Current (A)

Starting current (A)

Outdoor unit Indoor unitIndoor unitOutdoor unit

Cool

4,300

1.48

0.12

0.60

0.66

4,550[5,720]

1.40[2.57]

0.08[1.25]

0.41[5.75]

0.45[6.14]

1.36

6.79

30

PLH-1.6KKHB.UK

PUH-1.6VKA

Cool

4,350

1.54

0.14

0.62

0.68

4,600[5,890]

1.45[2.74]

0.09[1.38]

0.43[6.02]

0.47[6.39]

1.40

6.76

32

Heat

1.32

6.59

30

Cool

5,300

2.24

0.12

0.61

0.67

2.12

9.83

43

Heat

5,700[6,870]

2.22[3.39]

0.08[1.25]

0.42[5.76]

0.46[6.14]

2.14

9.93

43

PLH-2KKHB.UK

3.UK PUH-2VKA2.UK PUH-2.5VKA2.UK

Heat

1.36

6.57

32

Cool

5,350

2.29

0.13

0.63

0.69

2.16

9.78

44

Heat

5,750[7,040]

2.27[3.56]

0.09[1.38]

0.44[6.03]

0.48[6.39]

2.18

9.87

44

Cool

6,200

2.53

0.12

0.57

0.63

2.41

11.18

52

PLH-2.5KKHB.UK

Cool

6,250

2.57

0.13

0.59

0.65

2.44

10.94

52

Heat

6,900[8,660]

2.25[4.01]

0.09[1.85]

0.42[8.44]

0.46[8.79]

2.16

10.02

52

Heat

7,050[8,980]

2.29[4.22]

0.09[2.02]

0.43[8.82]

0.47[9.19]

2.20

9.86

52

Indoor unit

Service Ref.

Outdoor unit

Mode

Capacity (W)

Total Input (kW)

Input (kW)

Current (A)

Starting current (A)

Input (kW)

Current (A)

Starting current (A)

PLH-1.6KKHB.UK

PUH-1.6VKA

Cool

4,400

1.59

0.15

0.64

0.70

4,650[6,050]

1.51[2.91]

0.10[1.50]

0.45[6.28]

0.50[6.63]

1.44

6.74

33

PLH-2KKHB.UK

3.UK PUH-2VKA2.UK PUH-2.5VKA2.UK

Heat

1.41

6.60

33

Cool

5,400

2.34

0.14

0.65

0.72

2.20

9.86

45

Heat

5,800[7,200]

2.32[3.72]

0.10[1.50]

0.45[6.28]

0.50[6.63]

2.22

9.95

45

PLH-2.5KKHB.UK

Cool

6,300

2.60

0.14

0.61

0.67

7,200[9,300]

2.33[4.43]

0.10[2.20]

0.45[9.20]

0.50[9.55]

2.46

10.68

52

Heat

2.23

9.78

52

12

Mode

Total

Electrical circuit

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

SHF

BF

W

kW

MPa·G

$C

m

DB$C

WB$C

DB$C

WB$C

PLH-1.6KKHB.UK

Cooling

4,400

1.59

PLH-1.6KKHB.UK

1,50

240

0.64

Heating

4,650

1.51

0.45

PLH-2KKHB.UK

Cooling

5,400

2.34

PLH-2KKHB.UK

1,50

240

0.65

Heating

5,800

2.32

0.45

PLH-2.5KKHB.UK

Cooling

6,300

2.60

PLH-2.5KKHB.UK

1,50

240

0.61

Heating

7,200

2.33

0.45

PUH-1.6VKA

3.UK

1,50

240

PUH-2VKA2.UK

1,50

240

PUH-2.5VKA2.UK

1,50

240

6.74

1.80

0.54

78.7

48.5

8.5

5

27

19

16.1

35

24

0.83

0.21

6.60

1.70

0.40

77.2

—

0.7

5

20

15

35.2

7

6

—

9.86

1.90

0.46

84.0

50.7

4.8

5

27

19

15.0

35

24

0.76

0.21

9.95

1.94

0.34

86.4

—

–1.8

5

20

15

39.4

7

6

—

10.68

1.95

0.50

82.8

51.8

6.7

5

27

19

13.8

35

24

0.75

0.14

9.78

1.71

0.36

76.0

—

–1.5

5

20

15

41.2

7

6

—

Service Ref.

V

A

V

A

(O/F·G)

(18.3)

(5.51)

(17.3)

(4.08)

(19.3)

(4.69)

(19.7)

(3.47)

(19.8)

(5.1)

(17.4)

(3.67)

High ceiling Standard

Air flow m3/min

Air speed m/sec.

Coverage range m

Air flow m

3

/min

Air speed m/sec.

Coverage range m

Total width of dischsrge outlets mm

PLH-1.6KKHB.UK

16.0

5.6

6.0

17.0

5.9

6.4

0

PLH-2KKHB.UK

16.0

5.6

6.0

17.0

5.9

6.4

0

PLH-2.5KKHB.UK

17.0

5.9

6.4

18.0

6.3

6.8

0

Service Ref.

3. STANDARD OPERATION DATA

4. OUTLET AIR SPEED AND COVERAGE RANGE

wThe air coverage range is the value up to the position where the air speed is 0.25m/sec.

When air is blown out horizontally from the unit at the Hi notch position. The coverage range should be used only as a general guideline since it varies according to the size of the room and the furniture inside the room.

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/F·G)

13

OUTLINES AND DIMENSIONS5

Unit : mm

Ceiling hole

Suspension bolt pitch

Suspension bolt M10 or

Air intake hole

Air outlet hole

Air intake grill

690~710 25~3525~35

640

660

466

460

66 35

760

117 117

117

435

13545

117

Ceiling hole

Suspension bolt pitch

Suspension bolt lower edge

Air outlet hole

690~710

25~35

65~80

760

460

466

6635

115

243

253

29330

54

+3

- 2

507

660

54

53

Terminal block for control

Terminal block for

remote controller

Terminal block for

power supply

Drain hole

VP-25 connection

W3/8

Feeding hole

(Drain pump)

Leave space of 10~15mm between the

top surface of the unit and the ceiling slab.

Ceiling surface

4-Auto vanes

Intake grill opening/closing side

Vane motor

Decorative panel

Control wire entry

Refrigerant piping side

electric wire entry side

Power line entry

41 25

Liquid pipe

Gas pipe

Optional high-efficiency hilter

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

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

the electric wires.

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

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

installing the optional casement, the dimension between the transom

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

can also be installed.)

1 2

Refrigerant pipe {9.52

Flared connection 3/8F

Refrigerant pipe {15.88

Flared connection 5/8F

1.6/2/2.5KK

1. INDOOR UNIT PLH-1.6KKHB.UK PLH-2KKHB.UK PLH-2.5KKHB.UK

14

Unit : mm (inch)

2. REMOTE CONTROLLER

18

130

Rear side wiring arrangement opening.

120

FILTER

CHECK MODE

TEST RUN

FILTER

CHECK MODE

TEST RUN

46

83.5

SW18

SW17

CAUTION

15

WIRING DIAGRAM6

NOTES :

1. Since the indoor transformer (T)is connected with 240Vpower. If 220, 230v power is used. change the wiring connection showing fig: w2

When power supply is

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

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

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

5. 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 exists 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

board 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 run with the power ON/OFF (ON/OFF with the remote controller is not possible). [Emergency operation procedure] (1)Switch the fan connector on the indoor controller board from FAN 1 to FAN 2.

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

(3)Turn on the outdoor unit side circuit breaker, then the indoor unit side circuit breaker. (4)During emergency operation indoor fan runs at High speed but auto-vane does not work. (5)Thermostat will not function. Cold air blows 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)After every operation, switch the fan connector to FAN1, and set all dip switches (SW3<I.B>) to OFF. NOTE: If the drain water lift up mechanism is identified to be defective with the microcomputer doctor during cooling, do not use emergency operation

(it causes drain overflow)

fig:w2

240V

230V

220V

230V 220V

YELLOW ORANGE RED

SYMBOL NAME R.B

REMOTE CONTROLLER BOARD SW17<R.B> ADDRESS SELECTOR SW18<R.B> FUNCTION SELECTOR CN1<R.B>

PROGRAM TIMER CONNECTOR CN2<R.B>

REMOTE SWITCH CONNECTOR MV VANE MOTOR LS LIMIT SWITCH H2 DEW PREVENTION HEATER RT1

ROOM TEMP. THERMISTOR(0°C/15K1,25°C5.4K1) RT2

INDOOR COIL THERMISTOR(0°C/15K1,25°C5.4K1) T TRANSFORMER MF INDOOR FAN MOTOR C1 FAN MOTOR CAPACITOR TB2~6 TERMINAL BLOCK I.B INDOOR CONTROLLER BOARD

SYMBOL NAME CN2L<I.B>

LOSSNAY CONNECTOR

CN51<I.B>

CENTRALLY CONTROL CONNECTOR

FAN2<I.B>

EMERGENCY OPERATION CONNECTOR F.C<I.B> FAN PHASE CONTROL SW1<I.B> MODE SELECTOR SW2<I.B> ADDORESS SELECTOR SW3<I.B>

EMERGENCY OPERATION SWITCH SW5, SW7<I.B> MODEL SELECTOR SW6<I.B> TWIN, TRIPLE SWITCH SWA<I.B>

HIGH SEILING, NOISE SAVING SELECTOR SWB<I.B>

NUMBER OF AIR OUTLETS SELECTOR SWC<I.B> OPTION SELECTOR ZNR<I.B> VARISTOR X1<I.B>

DRAIN PUMP/D.HEATER RELAY

SYMBOL NAME X3<I.B>

VANE MOTOR RELAY

X4<I.B>

FAN MOTOR RELAY F1<I.B> FUSE (6.3A) LED1<I.B> DC 12V POWER LED LED2<I.B> DC 5V POWER LED CNP<I.B> DRAIN PUMP CONNECTOR CN50<I.B> DRAIN SENSOR CONNECTOR DP DRAIN PUMP DS DRAIN SENSOR H1 HEATER FS1,2 THERMAL FUSE 26H HEATER THERMAL SWITCH 88H HEATER CONNECTOR CNV<I.B> VANE MOTOR CONNECTOR

PLH-1.6KKHB·UK/PLH-2KKHB·UK/PLH-2.5KKHB·UK

2.5KK

2KK1.6KK

MODELS

SW7

OFF

ON

32

1

OFF

ON

32

1

OFF

ON

32

1

fig:1

YLW

BLU

RED

BLU

RED

YLW

*PLH-1.6,2,2.5KKHB(with heater)

26H

1 2

POWER SUPPLY ~(1PHASE) 220-240V 50Hz

H1

L N

3

88H

TB2

3

1

5

FS1

FS2

HEATER CN24

1

6

88H

1

2

1

3 4

1

5

4

3

2

1

3

2

5

4

3

2

1

3

5

1

0

DP

6

1

7

2

MV

MF

31 5

1

5

4

3

2

4

3

2

1

2

1

4

3

2

1

2

1

2

1

3

2

1

2

1

1234

31313131

5

B

R

N

B

R

N

LS

Showing fig:1

12V POWER

LED1

5V POWER

LED2

X1X3

X4

STD

OP

SWC

SW7 SW3

2

1321

4

3

2

SWB

1

2

3

SWA

10987432165

4321

SW6

432165432

1

SW1

SW5

CN24

HEATER

OFF

ON

SW2

RT2

DS

RT1

CN51

CONTROL

CENTRALLY

DRAIN

CN50

CN41

POWER

REMOCON

CN40

INTAKE

CN20

PIPE

CN21

CN22

TO REMOCON

CN30

OUTDOOR

CN23

VANE

CN2L

LOSSNAY

R

.B

.

OFF

ON

TB6

SW17

SW18

CN1

CN2

2

1

2

1

BLU

TRNSMISSION WIRES DC12V

BRN

ORN

YLW

TRNSMISSION WIRES DC12V

OUTDOOR

UNIT

3

2

1

3

2

TB3

TB4

BLK WHT

G

RILL

H2

B

L

U

B

LU

B

R

N

B

R

N

BRN

CN4T

TRANS

11.1V AC

14.2V AC

BRN

RED

T

YLW

ORN

YLW

RED

BLU

RED

GRN/YLW

POWER SUPPLY

~(1PHASE)

220-240V 50Hz

220V 60Hz

N

L

TB2

YLW

C1

RED

FAN2

F1

ZNR

X1X3

X4

F.C

TRANSPOWERD.U.M.VANEFAN

CNTCNDCNPCNVFAN1

BG79Y408H01

ON

16

7

REFRIGERANT SYSTEM DIAGRAM

Service port

Capillary tube

Indoor heat exchanger

Indoor coil thermistor (RT2)

Distributor with strainer

PLH-1.6 (O.D.3.2 ✕ I.D.1.6 –R 630) PLH-2.5 (O.D.3.2 ✕ I.D.1.8 –R 430)

wPLH-1.6 (O.D.3.2 ✕ I.D.1.8 –R 400)

PLH-2 (O.D.4.0 ✕ I.D.2.0 –R 430) PLH-2.5 (O.D.4.2 ✕ I.D.2.4 –R 1550)

PLH-2 (O.D.3.2 ✕ I.D.1.8 –R 630)

Restrictor valve

Refrigerant pipe (option)

9.52mm( 3.8") (with heat insulator)

Ball valve (with service port)

Indoor unit

Strainer

Refrigerant pipe (option)

15.88mm( 5/8") (with heat insulator)

Flexible tube

Flared connection

Ball valve

Strainer

4-way valve

Oil separator

Service port

High pressure control switch

High pressure protect switch

Outdoor unit

Outdoor heat exchanger

Flow of refrigerant (cooling) Flow of refrigerant (heating)

Outdoor coil thermistor (TH)

Bypass valve

Restrictor valve

w

Capillary tube

Strainer

Compressor

Accumulator

Refrigerant flow in cooling Refrigerant flow in heating

R.V.coil Heating ON Cooling OFF

PLH-1.6KKHB·UK/PUH-1.6VKA3·UK PLH-2KKHB·UK/PUH-2VKA

2·UK

PLH-2.5KKHB·UK/PUH-2.5VKA

2·UK

Unit : mm

17

OPERATION FLOW-CHART

8

START

Power circuit

breaker

Check SW

ON twice

Operation SW

ON

“OFF” timer

“ON” timer

STOP

Set time complete

1

NO

NO NO

NO

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

w1

w2

w3

w6

w4

w7

w5

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 malfunction

● 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.)

18

COOL operation

Four-way valve/OFF

Initial

COOLING

NO

YESw8

YES

NO

YES

NO

YES

NO

Vane initial

setting

Vane 55 deg downward angle 70 deg downward angle

Fan speed

LOW

Downward discharge

1 hour

Vane setting notch

Vane horizontal

airflow

Compressor

thermostat

ON

Allowance

cancel

3-minute

time delay

6-minute

time delay

3-minute

compressor operation

Coil frost

prevention

Cooling area

10-minute

compressor operation

Allowance cancel

Coil frost protection

16-minute

compressor operation

Indoor pipe

temperature is

1$C or lower

Compressor ON

1

Coil frost

prevention

Compressor OFF

Indoor coil tempreature is 10$C or higher

3-minute

time delay

Coil frost

prevention release

Allowance

period

6 minute

time delay

Allowance set

1 min continue

Coil frost protection

FAN speed

LOW

FAN speed

LOW 5 min

elapse

Outdoor unit

trouble

w9

w10

w11

COOLING OPERATION

w8 When operation stops or changes to cooling or dry mode, the auto vane tums 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.

19

HEATING OPERATION

AUTOMATIC COOLING/HEATING OPERATION

w15 ( i ) Until Low airflow is set while hot adjustment

(ii)While defrosting (FAN STOP) (iii)When thermostat is OFF In the case of( i ), (ii) and (iii) above, airflow is horizontal regardless the VANE setting.

w16 When AUTO operation is started, COOL or HEAT mode is selected automatically. w17 T1 : Room temperature.

To : Set temperature

Heat operation

NO

Initial

HEATING

Vane setting notch

Vane initial setting

Defrosting

Four-way valve ON

Hor adjust in process

Compressor ON

Compressor

w9

thermostat ON

Allowance cancel

NO

Indoor piping

-15$C or lower

Outdoor unit

trouble

FAN SPEED

Very low airflow

Compressor OFF

Auto COOL/HEAT

operation

NO

Initial mode

w17

1 T0

T

COOL mode HEAT mode

A

Type

OFF

NO

YES

FAN setting notch

B

YES

w10

w11

NO

Heating area

NO

Defrost

30 min. elapse

YES

Outdoor unit trouble

1

A

Outdoor unit

trouble

YES

Defrost release

NO

Indoor piping 55$C or lower

NO

Auxiliary heater

NO

Indoor piping

60$C or higher

YES

Auxiliary heater OFF

Overheat remote

NO

Indoor unit

70$C or higher

Allowance

Overload protect

B

ON

START

period

1

2

NO

YES

NO

Auxiliary heater

thermostat ON

Auxiliary heater ON

NO

6-minute restart

Allowance set

Compressor OFF

prevention

YES

35$C or higher

FAN SPEED

setting nitch

Hot adjust

w15

YES

NO

YES

NO

YES

NO

YES

3 min.restart

prevention

YES

2

YES

1

w16

YES

NO > =

YES

NO

6 min. restart

prevention

NO

Hot adjust start

FAN SPEED very low

Compressor ON

NO

compressor

Allowance cancel

Heating

FAN STOP

w11

Airflow area

20 min.elaspe

YES

Airflow area Heating area

w11

Airflow area Cooling area

Defrost operation

Four-way valve

10-minute

operation

YES

area

NO

YES

START

OFF

Indoor piping

NO

HOT adjust

6 min. elapse

YES

Low

FAN SPEED

Low 2 min.

elapse

YES

release

PLH-KKHB

3-minute

Auxiliary heater

Indoor coil

thermstor is 60$C

or higher

FAN speed

Low notti

Airflow 10% up

NO

1

<(T0-2)

T

YES

NO

1>(T0 + 2)

T

YES

NO

11

YES

After 15min.

T1>(T0 + 2)

NO

HEAT operation

YES

Cool mode

set

COOL mode

NO

1 < (T0 - 2)

T

After 15min.

COOL operation HEAT operation

20

w8—9 Refer to page 26~27. w12 When room temperature is 18°C or below, the compressor cannot operate.

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

w13 Compressor ON time is decided by room temperature. Refer to page 26~27 . w14 In dry operation, compressor ON makes the fan speed LOW and compressor OFF stops the fan.

It is not possible to set the fan speed with the remote controller

DRY OPERATION

DRY

operation

Four-way valve / OFF

Initial dry

operation

Room tempereature is

18°C or lower

During

compressor ON

Compressor &

thermostat ON

Vane initial setting

Vane

setting notch

10-minute compressor

OFF timer start

Compressor OFF

Fan STOP

3-minute

time delay

10-minute

compressor

OFF

Compressor ON

time set

Compressor ON

Fan speed LOW

1

Compressor &

thermostat

ON

3-minute

compressor

operation

Compressor ON

time completes

NO

YES

NO

YES

w

14

w

14

w

13

YES

NO

YES

NO

w

9

YES

w

9

NO

w

12

YES

NO

YES

w

8

21

MICROPROCESSOR CONTROL

9

● Compressor and outdoor fan : ONOFF

● Operation mode change :COOLHEAT.

1.OUTLINE OF MICROPROCESSOR CONTROL

● OFF-ON switching.

● COOL/DRY-AUTO-HEAT selector switching.

● Thermostat setting.

● TIMER mode selector-switching and Timer

setting.

● HIGH-LOW fan speed switching.

● AUTO Vane selector (AIR DISCHARGE)

switching.

● TEST RUN switching.

● CHECK mode switching.

(Self diagnostic trouble shooting)

● Room temperature thermistor (RT1)

● Indoor coil thermistor (RT2)

● Drain sensor

● Autovane’s angle setting.

● Booster heater ON-OFF Control.

● Drain pump : ON-OFF.

● Emergency stop.

● Compressor

protectiondevice working

● Defrosting START-STOP

● Fan speed control.

● Crankcase heater control

ON-OFF.

● Self diagnostic function

Independent Control of Outdoor Unit

OUTPUT to indoor unit

INPUT from indoor unit

INPUT to remote controller

Remote controller board

● Processes and transmits orders.

OUTPUT to remote controller

Indoor controller board

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

● Processes orders and data.

● Controls indoor and outdoor operation.

● Self diagnostic function.

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

● Transmits the power to remote controller.

OUTPUT to outdoor unit

12VDC

Non-polar, two-wire cable maxinmum length 500 meters

Signal

Remote controller

● LCD indicator

Polar three-wire cable

12VDC

123

1 2 3

Indoor unit

Outdoor unit

FILTER

CHECK MODE

TEST RUN

240KA

22

2. INDOOR UNIT CONTROL

2-1COOL operation

(1) Compressor control

1 3-minute time delay

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

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

The compressor stops when 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: or below after the compressor has been continuously operated for at least 16 minutes or more. When the indoor coil temperature rises to

10: or above, the compressor will start after a 3-minute time delay. NOTE : By turning OFF the dipswitch SW1-5 on indoor controller board, the start temperature of coil frost prevention

changes from 1: to -3:.

1 Press POWER ON/OFF button.

2

Press the button to display “ ”

3

Press the TEMP button to set the desired temperature.

NOTE: Set temperature changes 1°C when the or

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

Minimum 3 minutes w1

ON

Thermostat

Indoor fan

Auto vane

Drain pump

Booster heater

Compressor

ON

LOW or HIGH

Initally 30 degrees

(Changeable by remote controller setting)

LOW or HIGH

ON

OFF

discharge position

30

3 minutes

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.

air flow position

30

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

FILTER

CHECK MODE

TEST RUN

240KA