Mitsubishi Electric Mr. Slim PLH Series Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
CONTENTS
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 S STEM DIAGRAM ······16
8. OPERATION FLOW-CHART··············17
9. MICROPROCESSOR CONTROL·······21
10. TROUBLESHOOTING························43
11. 4-WA AIR FLOW S STEM···············51
12. S STEM CONTROL···························52
13. DISASSEMBL PROCEDURE···········57
14. PARTS LIST········································60
15. OPTIONAL PARTS·····························64
Indoor unit
[Model names]
PLH-1.6KKHC
PLH-2KKHC
PLH-2.5KKHC
No. OC123
1997
This manual does not over the
following outdoor units. When
servi ing them, please refer to the
servi e manual No.OC128 and
this manual in a set.
[Servi e Ref.]
PUH-1.6VKA2
PUH-2VKA2
PUH-2.5VKA2
INDOOR UNIT
Ceiling Cassettes
Series PLH
FILTER
CHECK MODE
TEST RUN
REMOTE CONTROLLER The Slim Line.
From Mitsubishi Electric.
[Service Ref.]
PLH-1.6KKHC
PLH-2KKHC
PLH-2.5KKHC

2
FEATURES
1
1.PURSUING CONPACTNESS
(1)Panel size and body volume reduced to 64% of previous models
The width and depth of the panel have been redu ed by 19 m respe tively,resulting in a ompa t model whi h fits small-
er environments (like shops) perfe tly.
(2)Multi-application panels flexibly adapt to installation conditions.
Spa e panel and Wide panel may be installed on eilings with shallow depth using the exiting opening .
2."SMUDGE-FREE", PRECISEL TARGETED AIRFLOW S STEM
The new ontrol system regulates airflow to prevent smudging. A proje tion inside the air passage distributes air evenly
over the top and bottom of the vane. Two proje tions on the air outlet work to prevent ooled air from rising to the
elling, and also to stop outside air being dragged into the ooled air stream.
3.AIRFLOW ADJUSTABLE TO AN INDOOR ENVIRONMENT
Airflow an be adjusted a ording to elling height and the number of air outlets. "Wide Zoming Flow" reates anopti-
mum airflow for any indoor environment.
4.A FURTHER REFINEMENT OF COMFORT WITH NOISE SUPPRESION
The elling 4-way airflow assette has a spe ial "silent-design". The "2-Tap"system allows a hoi e between silent and
standard modes a ording to the height of the ellig. For ordinary residen ed whi h have a low elling, sele tion of the
silent mode will result in remarkable noise redu tions.
5.ECONOMICAL AND EAS MAINTENANCE
(1)Push-open grill
Filter logging is widely re ognized as a ause of redu ed perfoman e, but up until now it has been troublesome to
lean filters. With the "push-open grill" the fillter an be smoothly opened out at the push of a button, enabling speedy
leaning.
(2)An unprecedented level of vane-cleaning
The unique airflow system prevents the intake of indoor air. Dewing therefore does not o ur, and the vane is flo kless.
The resulting level of dirt on the vane due to toba o smoke, dust, et . is very light,and an be wiped off easily with a
neutral detergent
(3)Long-life fillter
This new elling 4-way airflow assette employs a long life fillter whi h requires no maintenan e for up to 2,500 hours of
operation in general offi e environments. It adds uo to an ideal blend of omfort and low maintenan e.
Service Ref. Cooling capacity/Heating capacity
W Btu/h
PLH-1.6KKHC 4,400/4,650 15,000/15,900
PLH-2KKHC 5,400/5,800 18,400/19,800
PLH-2.5KKHC 6,300/7,200 21,500/24,600
Indoor unit
Ceiling Cassettes
Series PLH
Remote ontroller
FILTER
CHECK MODE
TEST RUN

3
6.COMPACT DIMENSIONS MEAN EAS 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, sus-
pension work is fa illitated by ompa t dimensions ensuring a snug fit.
(2)Smooth installation with "one-direction"bolts
Suspension bolts an be fixes onsistently from one dire tion easing suspension work.
(3)Trouble-free fitting work with slender refrigerant piping
Refrigerant piping has been redu ed in size, and pipe- urving work at the installation site an now be ompleted qui kly
and e onomi ally. In addition, refrigerant and drain piping are set at different orners, whi h means that flare onne tions
and drain piping heat insulation work an be smoothly and reliably implemented.
(4)Easy-access terminal and control panels for efficient wiring
When performing wiring work, progress an be he ked on the power sour e terminal and ontrol panels simply by
removing the ele tri al parts over. Adress setting an also be done easily from beneath at a onvenient angle.
(5)"One-push"to provisionally position front panel
Panel weight has been redused from 7kg to 3.7kg. The previous 3-step pro ess for provisionally positioning the panel
has been streamlined, and now a simple "one-push" a tion at the diagonal orners fixed it into pla e, resulting in major
time-saving.
2PART NAMES AND FUNCTIONS
● Indoor (Main) Unit
PLH-1.6KKHC
PLH-2KKHC
PLH-2.5KKHC
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Grill
Filters
Remove dust and pollutants
from inhaled air
Horizontal Air Outlet
Sets airflow horizontal automatically
during cooling or dehumidifying.
Air Intake
Inhales air from room.

4
● Remote controller
● Operation buttons
● On e the ontrols are set, the
same operation mode an be
repeated by simply pressing the
ON/OFF button.
FILTER
CHECK MODE
TEST RUN
240KA
This swit hes between
ontinuous operation and
the timer operation.
button This sets the ventilation
fan speed.
button
This adjusts the verti al
angle of the ventilation.
(This button does not
operate in this model)
button
This sets of swit hes the
urrent time. start time
and stop time.
button
This swit hes the hori-
zontal fan motion ON and
OFF.
button
Press this button to
swit h the ooler ele -
troni dry (dehumidify)
automati and heater
modes.
button
Only press this button to
perform an inspe tion
he k or test operation
Do not use it for nomal
operation.
CHECK-TEST RUN button
This resets the filter ser-
vi e indi ation display.
FILTER button
This swit hes between the
operation and stop modes
ea h time it is pressed.
The lamp on this butoon
lights during operation.
ON/OFF button
This sets the room tem-
parature The temparature
setting an 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 ontroller is indi-
ated.

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 malfun tion.
●When the entral ontrol remote ontrol unit, whi h is sold separately, is used the ON-OFF button, button and TEMP
button do not operate.
●“NOTAVAILABLE” is displayed when the kbutton are pressed.This indi ates that this room unit is not equipped with the fan
dire tion adjustment fun tion and the louver fun tion.
FILTER
CHECK MODE
TEST RUN
240KA
Operation lamp
This lamp lights during operation,
goes off when the unit stops and
flashes when amalfun tion o urs.
CENTRALLY
CONTROLLED display
This indi ates when the unit is on-
trolled by optional features su h as
entral ontrol type remote ontroller.
display
This indi ates when the ontinous
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 indi ates the operation mode.
STANDBY display
This indi ates when the standby
mode is set from the time the sleep
operation starts until the heating air
is dis harged.
DEFROST display
This indi ates when the defrost oper-
ation is performed.
CHECK display
This indi ates when a malfun tion
has o urred in the unit whi h should
be he ked.
display
This lamp lights when ele tri ity is
supplied to the unit.
display
This displays the sele ted setting
temperature.
display
The urrent time , start time and stop
time an be displayed in tense ond
intervals by pressing the time swit h
button. The start time or stop time is
always displayed during the timer
operation.
display
This displays the air dire tion.
●Display
In this display example on the bottom left, a ondi-
tion where all display lamps light is shown for
explanation purposes although this differs from
a tual operation.
display
This display lights in the he k mode
or when a test operation is per-
formed.
CHECK MODE
TEST RUN
Display
FILTER
This lamp lights when the filter need
to be leaned.
display
The temperature of the su tion air is
displayed during operation. The dis-
play range is 8° to 39°C. The display
flashes 8°C when the a tual temper-
ature is less than 8° and flashes
39°C when the a tual temperature is
greater than 39°C.
display
The sele ted fan speed is displayed.

6
SPECIFICATIONS3
Service Ref.
Item
Btu/h
W
kW
kW
A
A
kW
K/min(CFM)
mmAq,Pa
kW
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kW
A
A
kW
kW
K
/min(CFM )
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
mm,(in.)
mm,(in.)
Function
Capacity
Total input
Service Ref.
Power supply(phase, cycle,voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan(drive) x No.
Fan motor output
Airflow(Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-High)
Cond. drain conn. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan(drive) x No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Pipe size O.D.
Connection method
Between the indoor &
outdoor unit
INDOOR UNITOUTDOOR UNIT
REFRIGERANT PIPING
PLH-1.6KKHC
Cooling
15,000
4,400
1.59
0.15
0.64
0.70
UNIT : 660(26)
UNIT : 660(26)
UNIT : 253(10)
UNIT : 19(42)[20(44)]
1.44
6.74
Heating
15,900[20,600]
4,650[6,050]
1.51[3.20]
0.10[1.50]
0.45[6.28]
0.50[6.91]
PANEL : 760(30)
PANEL : 760(30)
PANEL : 30(1-1/8)
PANEL : 3.7(8)[3.7(8)]
1.41
6.60
W
D
H
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height difference
Piping length
PLH-1.6KKHC
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-1.6VKA2
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) x 1
0.065
45(1,590)
Reverse cycle
49
870(34-1/4)
295+24 (11-5/8 and 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
Btu/h
W
kW
kW
A
A
kW
K/min(CFM)
mmAq,Pa
kW
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kW
A
A
kW
kW
K
/min(CFM )
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
mm,(in.)
mm,(in.)
Fun tion
Capa ity
Total input
Service Ref.
Power supply(phase, y le,voltage)
Input
Running urrent
Starting urrent
External finish
Heat ex hanger
Fan(drive) x No.
Fan motor output
Airflow(Low-High)
External stati pressure
Booster heater
Operation ontrol & Thermostat
Noise level(Low-High)
Cond. drain onn. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, y le, voltage)
Input
Running urrent
Starting urrent
External finish
Refrigerant ontrol
Compressor
Model
Motor output
Starter type
Prote tion devi es
Heat ex hanger
Fan(drive) x No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Pipe size O.D.
Conne tion method
Between the indoor &
outdoor unit
INDOOR UNITOUTDOOR UNIT
REFRIGERANT PIPING
PLH-2KKHC
Cooling
18,400
5,400
2.34
0.14
0.65
0.72
UNIT : 660(26)
UNIT : 660(26)
UNIT : 253(10)
UNIT : 19(42)[20(44)]
2.20
9.86
45
Heating
19,800[24,600]
5,800[7,200]
2.32[4.09]
0.10[1.50]
0.45[6.28]
0.50[6.91]
PANEL : 760(30)
PANEL : 760(30)
PANEL : 30(1-1/8)
PANEL : 3.7(8)[3.7(8)]
2.22
9.95
45
W
D
H
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height differen e
Piping length
PLH-2KKHC
Single, 50Hz, 220-240V
Galvanized sheets with gray heat insulation
Plate fin oil
Turbo fan (dire t) x 1
0.030
13-16(460-565)
0(dire t blow)
[1.4]
Remote ontroller & built-in
32-37
32(1-1/4)
PUH-2VKA2
Single, 50Hz, 220-240V
Munsell 5Y 7/1
Capillary tube
Hermeti
NH38VMD
1.7
Line start
Inner thermostat, HP swit h
Plate fin oil
Propeller (dire t) x 1
0.065
45(1590)
Reverse y le
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
Btu/h
W
kW
kW
A
A
kW
K/min(CFM)
mmAq,Pa
kW
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kW
A
A
kW
kW
K
/min(CFM )
dB(A)
mm,(in.)
mm,(in.)
mm,(in.)
kg,(lbs)
kg,(lbs)
mm,(in.)
mm,(in.)
Fun tion
Capa ity
Total input
Service Ref.
Power supply(phase, y le,voltage)
Input
Running urrent
Starting urrent
External finish
Heat ex hanger
Fan(drive) x No.
Fan motor output
Airflow(Low-High)
External stati pressure
Booster heater
Operation ontrol & Thermostat
Noise level(Low-High)
Cond. drain onn. O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, y le, voltage)
Input
Running urrent
Starting urrent
External finish
Refrigerant ontrol
Compressor
Model
Motor output
Starter type
Prote tion devi es
Heat ex hanger
Fan(drive) x No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Pipe size O.D.
Conne tion method
Between the indoor &
outdoor unit
INDOOR UNITOUTDOOR UNITREFRIGERANT
PLH-2.5KKHC
Cooling
21,500
6,300
2.60
0.14
0.61
0.67
UNIT : 660(26)
UNIT : 660(26)
UNIT : 253(10)
UNIT : 20(44)[21(46)]
2.46
10.68
52
Heating
24,600[31,700]
7,200[9,300]
2.33[4.87]
0.10[2.20]
0.45[9.20]
0.50[10.12]
PANEL : 760(30)
PANEL : 760(30)
PANEL : 30(1-1/8)
PANEL : 3.7(8)[3.7(8)]
2.23
9.78
52
W
D
H
W
D
H
Liquid
Gas
Indoor side
Outdoor side
Height differen e
Piping length
PLH-2.5KKHC
Single, 50Hz, 220-240V
Galvanized sheets with gray heat insulation
Plate fin oil
Turbo fan (dire t) x 1
0.030
14-17(495-600)
0(dire t blow)
[2.1]
Remote ontroller & built-in
35-39.5
32(1-1/4)
PUH-2.5VKA2
Single, 50Hz, 220-240V
Munsell 5Y 7/1
Capillary tube
Hermeti
NH41VMD
2.0
Line start
Inner thermostat, HP swit h
Plate fin oil
Propeller (dire t) x 1
0.085
50(1764)
Reverse y le
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
4DATA
1. PERFORMANCE DATA
1) COOLING CAPACIT
Note CA:Capa ity (W)
P.C. :Power onsumption (kW)
Cooling capacity correction factors
Service Ref.
PLH-1.6KKHC
PLH-2KKHC
PLH-2.5KKHC
Indoor
intake
air
WB:
16
18
20
22
16
18
20
22
16
18
20
22
CA
4,347
4,627
4,906
5,177
5,257
5,595
5,933
6,261
6,268
6,671
7,074
7,465
P.C.
1.36
1.39
1.41
1.43
2.14
2.18
2.22
2.25
2.47
2.53
2.57
2.61
CA
4,227
4,506
4,790
5,078
5,112
5,450
5,793
6,141
6,095
6,498
6,907
7,322
P.C.
1.42
1.44
1.47
1.50
2.23
2.27
2.31
2.35
2.58
2.63
2.68
2.73
CA
4,068
4,339
4,618
4,906
4,919
5,247
5,585
5,933
5,865
6,256
6,659
7,074
P.C.
1.52
1.56
1.59
1.62
2.40
2.45
2.50
2.55
2.78
2.84
2.90
2.96
CA
3,900
4,162
4,438
4,730
4,716
5,034
5,366
5,720
5,628
6,002
6,398
6,820
P.C.
1.63
1.67
1.71
1.75
2.57
2.63
2.69
2.76
2.97
3.05
3.12
3.19
CA
3,724
3,978
4,253
4,545
4,503
4,810
5,143
5,496
5,369
5,735
6,132
6,553
P.C.
1.74
1.78
1.83
1.89
2.74
2.81
2.89
2.97
3.17
3.25
3.34
3.44
CA
3,535
3,788
4,059
4,352
4,274
4,581
4,909
5,262
5,096
5,462
5,853
6,274
P.C.
1.85
1.90
1.96
2.03
2.91
2.98
3.08
3.19
3.37
3.46
3.57
3.70
20 25 30 35 40 45
Outdoor intake air DB:
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)
INDOOR WB(°C)
22
20
18
16
22
20
18
16
Service Ref. Refrigerant piping length (one way)
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
PLH-1.6KKHC 1.00 0.993 0.984 0.978 0.969 0.961 0.956 0.948 — —
PLH-2KKHC 1.00 0.992 0.983 0.978 0.966 0.959 0.950 0.945 — —
PLH-2.5KKHC 1.00 0.989 0.980 0.970 0.960 0.950 0.940 0.930 0.920 0.910

10
2) HEATING CAPACIT
Note CA:Capa ity (W)
P.C. :Power onsumption (kW)
Heating capacity correction factors
Service Ref.
PLH-1.6KKHC
PLH-2KKHC
PLH-2.5KKHC
Indoor
intake
air
WB:
15
20
25
15
20
25
15
20
25
CA
3,169
3,031
2,916
3,996
3,822
3,677
4,616
4,415
4,248
P.C.
1.12
1.20
1.28
1.77
1.90
2.02
1.82
1.96
2.09
CA
3,625
3,482
3,340
4,570
4,391
4,211
5,280
5,072
4,864
P.C.
1.23
1.33
1.42
1.95
2.10
2.24
2.01
2.17
2.31
CA
4,126
3,970
3,813
5,203
5,005
4,808
6,010
5,782
5,554
P.C.
1.36
1.46
1.56
2.15
2.31
2.47
2.21
2.38
2.55
CA
4,669
4,494
4,329
5,887
5,667
5,458
6,801
6,546
6,305
P.C.
1.49
1.60
1.71
2.35
2.53
2.71
2.43
2.61
2.80
CA
5,249
5,055
4,885
6,618
6,374
6,160
7,645
7,363
7,115
P.C.
1.62
1.75
1.87
2.57
2.77
2.97
2.65
2.85
3.06
CA
5,874
5,653
5,488
7,407
7,128
6,919
8,556
8,234
7,993
P.C.
1.77
1.90
2.04
2.80
3.01
3.23
2.88
3.10
3.33
-10 15 0 5 10 15
Outdoor intake air DB:
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)
INDOOR DB (°C)
15
20
25
25
20
15
TOTAL INPUT (RATIO) CAPACITY (RATIO)
Service Ref. Refrigerant piping length (one way)
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
PLH-1.6KKHC 1.00 1.00 1.00 1.00 1.00 1.00 0.998 0.995 — —
PLH-2KKHC 1.00 1.00 1.00 1.00 1.00 1.00 0.998 0.995 — —
PLH-2.5KKHC 1.00 1.00 1.00 1.00 1.00 1.00 0.998 0.995 0.993 0.990

11
Service Ref.
Indoor unit
Outdoor unit
Mode
Capa ity (W)
Total Input (kW)
Input (kW)
Current (A)
Starting urrent (A)
Input (kW)
Current (A)
Starting urrent (A)
Indoor unit
Outdoor unit PLH-1.6KKHC
PUH-1.6VKA2PLH-2KKHC
PUH-2VKA2PLH-2.5KKHC PUH-2.5VKA2
Cool
4,300
1.48
0.12
0.60
0.66
1.36
6.79
30
Heat
4,550
[5,720]
1.40
[2.57]
0.08
[1.25]
0.41
[5.75]
0.45
[6.33]
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
[3.73]
0.08
[1.25]
0.42
[5.76]
0.46
[6.34]
2.14
9.93
43
Cool
6,200
2.53
0.12
0.57
0.63
2.41
11.18
52
Heat
6,900
[8,660]
2.25
[4.41]
0.09
[1.85]
0.46
[9.28]
0.80
[8.79]
2.16
10.02
52
Service Ref.
Indoor unit
Outdoor unit
Mode
Capa ity (W)
Total Input (kW)
Input (kW)
Current (A)
Starting urrent (A)
Input (kW)
Current (A)
Starting urrent (A)
Indoor unit
Outdoor unit PLH-1.6KKHC PUH-1.6VKA2PLH-2KKHC
PUH-2VKA2PLH-2.5KKHC PUH-2.5VKA2
Cool
4,350
1.54
0.14
0.62
0.68
1.40
6.76
32
Heat
4,600
[5,890]
1.45
[3.01]
0.09
[1.38]
0.43
[6.02]
0.47
[6.62]
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
[3.92]
0.09
[1.38]
0.44
[6.03]
0.48
[6.63]
2.18
9.87
44
Cool
6,250
2.57
0.13
0.59
0.65
2.44
10.94
52
Heat
7,050
[8,980]
2.29
[4.64]
0.09
[2.02]
0.43
[8.82]
0.47
[9.70]
2.20
9.86
52
Service Ref.
Indoor unit
Outdoor unit
Mode
Capa ity (W)
Total Input (kW)
Input (kW)
Current (A)
Starting urrent (A)
Input (kW)
Current (A)
Starting urrent (A)
Indoor unit
Outdoor unit PLH-1.6KKHC PUH-1.6VKA2PLH-2KKHC
PUH-2VKA2PLH-2.5KKHC PUH-2.5VKA2
Cool
4,400
1.59
0.15
0.64
0.70
1.44
6.74
33
Heat
4,650
[6,050]
1.51
[3.20]
0.10
[1.50]
0.45
[6.28]
0.50
[6.91]
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
[4.09]
0.10
[1.50]
0.45
[6.28]
0.50
[6.91]
2.22
9.95
45
Cool
6,300
2.60
0.14
0.67
0.67
2.46
10.68
52
Heat
7,200
[9,300]
2.33
[4.87]
0.10
[2.20]
0.45
[9.20]
0.80
[9.55]
2.23
9.78
52
2. ELECTRICAL DATA
Indoor unit …220V 50Hz 1phase
Outdoor unit…220V 50Hz 1phase
Indoor unit …230V 50Hz 1phase
Outdoor unit…230V 50Hz 1phase
Indoor unit …240V 50Hz 1phase
Outdoor unit…240V 50Hz 1phase

12
TotalEle tri al ir uitRefrigetrant ir uitIndoor side
Outdoor
side
Service Ref.
SHF
BF
W
kW
V
A
V
A
Mpa•G
Mpa•G
°C
°C
°C
m
DB°C
WB°C
DB°C
DB°C
WB°C
Mode
Capa ity
Input
Indoor unit Service Ref.
Phase,Hz
Volts
Amperes
Outdoor unit Service Ref.
Phase,Hz
Volts
Amperes
Dis harge pressure
Su tion pressure
Dis ahrge temperature
Condensing temperature
Su tion temperature
Ref. pipe length
Intake air temperature
Dis harge air temperature
Intake air temperature
PLH-1.6KKHC
PLH-1.6KKHC
1,50
240
PUH-1.6VKA2
1,50
240
PLH-2KKHC
PLH-2KKHC
1,50
240
PUH-2VKA2
1,50
240
PLH-2.5KKHC
PLH-2.5KKHC
1,50
240
PUH-2.5VKA2
1,50
240
Cooling
4,400
1.59
0.64
6.74
1.80
0.54
78.7
48.5
8.5
5
27
19
16.1
35
24
0.83
0.21
Heating
4,650
1.51
0.45
6.60
1.70
0.40
77.2
—
0.7
5
20
15
35.2
7
6
—
—
Cooling
5,400
2.34
0.65
9.86
1.90
0.46
84.0
50.7
4.8
5
27
19
15.0
35
24
0.76
0.21
Heating
5800
2.32
0.45
9.95
1.94
0.34
86.4
—
-1.8
5
20
15
39.4
7
6
—
—
Cooling
6,300
2.60
0.61
10.68
1.95
0.50
82.8
51.8
6.7
5
27
19
13.8
35
24
0.75
0.14
(19.9)
(5.1)
(17.4)
(3.7)
(19.3)
(4.7)
(19.8)
(3.5)
(18.3)
(5.5)
(kgf/G•G)
(kgf/G•G)
(17.3)
(4.1)
Heating
7,200
2.33
0.45
9.78
1.71
0.36
76.0
—
-1.5
5
20
15
41.2
7
6
—
—
StandardHigh eiling
Air flow
Air speed
Coverage range
Air flow
Air speed
Coverage range
Total width of dis harge outlets
m3/min
m/se .
m
m3/min
m/se .
m
mm
PLH-1.6KKHC
16.0
5.6
6.0
17.0
5.9
6.4
0
PLH-2KKHC
16.0
5.6
6.0
17.0
5.9
6.4
0
PLH-2.5KKHC
17.0
5.9
6.4
18.0
6.3
6.8
0
3. STANDARD OPERATION DATA
4. OUTLET AIR SPEED AND COVERAGE RANGE
w The air overage range is the value up to the position where the air speed is 0.25m/se .
When air is blown out horizontally from the unit at the Hi not h position.
The overage range should be used only as a general guideline sin e it varies a ording to the size of the room and the
furniture inside the room.
The unit of pressure has been changed to Mpa based on international SI system.
The conversion factor is : 1(Mpa.G)=10.2(kgf/ff.G)

13
5OUTLINES AND DIMENSIONS
Unit : mm
Terminal block
Terminal block for remote controller
Power terminal block
Drain water release hole
Ceiling hole
Ceiling hole
Suspension bolt pitch
640
690~710 25~3525~35
117
186 660 117
13
64
77 507
25~35
145
154
25~35
Suspension bolt pitch
690~710
117117 660
68
2
1
75 65
65~80
115
253
29830
54+3
-2
42
Drain pipe Connected to VP-25
Inspection hole (Drain up machine)
Keep approximately 10 to 15mm space between unit ceiling and ceilimg slab.
Ceiling side
Suspension bolt M10 or W3/8
Suspension bolt lower edge
Control wire opening
135
435
54+3
-2
Power switch wire opening
Refrigerant piping side Wiring arrangement opening side
A(Indication area)
Wired panel
A
Connect the attached flexible pipe or socket.
466
Air intake
460 66 35
6635
760
Air outlet
460
760
Air outlet
466
Air intake
Grill
Vane motor
4-Auto vane
Intake grille opening closing side.
Intake grille
(Air intake)
Optional multifunctional casement
Optional high performance filter
1(Liquid) 2(Gas)
1/6/2/2.5 Refrigerant pipe {9.52
Flaredconnection 3/8F Refrigerant pipe {15.88
Flaredconnection 5/8F
Note 1: Note 2: Note 3:
For the installation of the optional humidifier(suspended type), it requires minimum 360mm space between transom and ceiling. Electrical box may be removed for the service purpose. Make sure to slack the electrical wire little bit for control/power wires connection. For the installation of the optional high efficiency filter or optional multiple casement, it requires minimum 440mm space between transom and ceiling for the installation (Optional high performance filter can be also installed).
1. INDOOR UNIT
PLH-1.6KKHC/PLH-2KKHC/PLH-2.5KKHC

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
CHECK CHECK
CAUTION


PLH-1.6,2,2.5KKHC (with heater)
TB2
POWER SUPPLY
-(1PHASE)
220-240V
50Hz
N
RED
BLU RED BLU
88H
88H
33 51FS1 FS2 H1
HEATER
CN24
YLW YLW
YLW
YLW
311
226H
3
22 3
4
MF
MV DP
1
27 16
13 13 13
13
23
C1
135
135
RED RED
RED ORN
YLW
YLW
ORN BLK BLK BLK
BLU
YLW
ORN
BRN
BRN
BLU
WHT
WHT BLK YLW YLW
FAN1
FAN
FAN2
X4
X3 X1
CNV
VANE CND
FI
S.U.M CND POWER CN4T
TRANS
CNT
TRANS
H2
I.B GRILL
10 5
BLU BLU
BRN
RED BRN
GRN /
BRN
ORN
YLW
YLW
TB2
TB4
TB5
TB4
TB3
BRN
BRN BRN
BRN
T
4321
1
1
2
3
4
5
1
2
3
4
1
2
1
2
1
2
1
2
1
2
3
1
2
1
2
3
4
1
2
3
4
5
23
123
12345
4
14.2V
AC 11.1V AC
LED2 5V POWER
LED1 12V POWER
L
NPOWER SUPPLY
~(1 PHASE)
220-240V 50Hz
220V 60Hz
3
2
1
3
2
2
2
1
1
1
TRANSMISSION
WIRE S
DC 12V
OUTDOOR
UNIT
F.C
X4 X3 ZNR
X1
I.B
DS
R.B.
ON
OFF 123456 1234
123 12
SW2 SW5
1234 12345678910
SW6
4321
87654321
SW18
SW17
SW1
CN2
CN1
RT1 RT2
SWA SWB
SW7 SW3 SWC OP
STD
Shorting fig *1
HEATER
CN24
CN50
DRAIN
CN40
REMOCON
POWER CN22
TO REMOCON
CN21
PIPE
CN23
VANE
CN30
OUTDDOR
CN2L
LOSSNAY
CN20
INTAKE
CN41
CN51
CNTRALLY
CONTROL
TRANSMISSION WIRES DC12V
ON
OFF
ON
OFF
Service Ref.
SW7 1 2 3
ON
OFF 1 2 3
1.6KKHC
2KKHC 2.5KKHC
fig:*1
ON
OFF
15
6WIRING DIAGRAM
NOTES :
1. Sin e the indoor transformer (T)is onne ted with 240Vpower. If 220, 230v power is used. hange the wiring onne tion showing fig: W2
When power supply is
2. Sin e the outdoor side ele tri wiring may hange be sure to he k the outdoor unit ele tri wiring for servi ing.
3. Indoor and outdoor onne ting wires are made with polarities. make wiring mat hing terminal numbers.
4. Symbols used in wiring diagram above are. / : Terminal blo k, : Conne tor.
5. Emergen y operation
If remote ontroller or mi ro omputer fails but there is no other truble,. emergen y operation is possible by setting dip swit h (SW3<I.B>) on the indoor on-
troller board.
[Che k items]
(1)Make sure that no other trouble exists the outdoor unit. Trouble with the outdoor unit prevents emergen y operation.
(If any trouble exists the outdoor unit error ode “P8”will be displayed on the remote ontroller and the trouble position will be shown on the outdoor ontroller
board LED. See ele tri wiring diagram of the outdoor unit for details.)
(2)Make sure that there is no trouble with the indoor fan.
Emergen y operation will be ontinuous run with the power ON/OFF (ON/OFF with the remote ontroller is not possible).
[Emergen y operation pro edure]
(1)Swit h the fan onne tor on the indoor ontroller board from FAN 1 to FAN 2.
(2)Set the dip swit h (SW3<I.B>) on the indoor ontroller board to 1on and 2off for ooling and 1- 2on for heating.
(3)Turn on the outdoor unit side ir uit breaker, then the indoor unit side ir uit breaker.
(4)During emergen y operation indoor fan runs at High speed but auto-vane does not work.
(5)Thermostat will not fun tion. Cold air blows out for defrosting during heating thus do not operate defrosting for a long time.
(6)Emergen y ooling should be limited to 10 hours maximum. (the indoor unit heat ex hanger may freeze).
(7)After every operation, swit h the fan onne tor to FAN1, and set all dip swit hes (SW3<I.B>) to OFF.
NOTE: If the drain water lift up me hanism is identified to be defe tive with the mi ro omputer do tor during ooling, do not use emergen y operation
(it auses drain overflow)
fig:W2240V
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/15KΩ,25°C5.4KΩ)
RT2 INDOOR COIL THERMISTOR(0°C/15KΩ,25°C5.4KΩ)
TTRANSFORMER
MF INNER THERMOSTAT 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> ADDRESS 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-1.6KKHC/PLH-2KKHC/PLH-2.5KKHC

16
REFRIGERANT S STEM DIAGRAM7
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-r630) PLH-2.5 (O.D.3.2 I.D.1.8-r430) PLH-2 (O.D.4.0 I.D.2.0 -r430)
PLH-2.5 (O.D.4.2 I.D.2.4-r1550)
PLH-2 (O.D.3.2 I.D.1.8-r630)
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
Outdoor unit
Outdoor heat exchanger
Outdoor coil
thermistor
(TH)
Bypass
valve
Restrictor
valve Capillary
tube
Strainer
Compressor
Accumulator
Refrigerant flow in cooling
Refrigerant flow in heating
R.V.coil
Heating ON
Cooling OFF
PLH-1.6 (O.D.3.2 I.D.1.8 -r430)
PLH-1.6KKHC/PUH-1.6VKA2
PLH-2KKHC/PUH-2VKA2
PLH-2.5KKHC/PUH-2.5VKA2
Unit : mm

17
OPERATION FLOW-CHART8
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
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
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
1
w2
w3
w4
w7
w
w5
w6
MAIN OPERATION
w1 In addition, the entralized ontrol and remote ontrol an be operated.
w2 The modes whi h indi ate the sour es of trouble are listed below.
● EO-Signal transmitting/re eiving error
● P1-Room temperature thermistor malfun tion
● P2-Indoor oil thermistor malfun tion
● P4-Drain sensor malfun tion
● P5-Drain overflow
● P6-Coil frost/overheat prote tion
● P7-System error
● P8-Outdoor unit trouble
w3 The CHECK swi h will show if an error has o urred 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 fun tions after ompressor stops.
w6 FAN or AUTO mode is sele ted by the indoor dipswit h setting.
w7 In FAN mode, fan speed and vane operation depend on the remote ontroller setting. (Compressor is OFF.)

18
COOL operation
Four-way valve/OFF
Initial
COOLING
NO
NO
NO
NO
NO
NO
YESw8
YES
YES
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
Vane initial
setting
Vane
55 deg downward angle
70 deg downward angle
Fan speed
LOW
Downward dis harge
1 hour
Vane setting not h
Vane horizontal
airflow
Compressor
thermostat
ON
Allowan e
an el
3-minute
time delay
6-minute
time delay
3-minute
ompressoroperation
Coil frost
prevention
Cooling area
10-minute
ompressor operation
Allowan e an el
Coil frost
prote tion
16-minute
ompressoroperation
Indoor pipe
temperature is
1°C or lower
Compressor ON
1
Coil frost
prevention
Compressor OFF
Indoor oil
tempreature is
10°C or higher
3-minute
time delay
Coil frost
prevention release
Allowan e
period
6 minute
time delay
Allowan e set
1 min ontinue
Coil frost prote tion
FAN speed
LOW
FAN speed
LOW 5 min
elapse
Outdoor unit
trouble
w9
10
11
w
w
COOLING OPERATION
w8 When operation stops or hanges to ooling or dry mode, the auto vane tums to a horizontal angle. If operation hanges
during auto vane SWING, the auto vane will ontinue to swing.
w9 When operating TEST RUN, the thermostat will be ontinuously ON.
w10 After 3 minute ompressor operation, if the indoor oil thermistor reads -15°C or below for 3 minutes, the ompressor will
stop for 6 minutes.
w11 Cooling area : Indoor oil temperature is more than 5 degrees above the room temperature.
Heating area: Indoor oil temperature is more than 5 degrees below the room temperature.
FAN area : Indoor oil temperature is within 5 degrees either way of the room temperature.

19
Heat operation
Initial
HEATING
Vane setting not h Vane intial setting
Defrosting
Heating area
Defrost release
Defrost
30 min. elaspe
Outdoor unit trouble
Four-way valve ON
Hor adjust
in pro ess
Compressor ON
Compressor
thermostat ON
Allowan e an el
Indoor piping
-15°C or lower
Outdoor unit
trouble
FAN SPEED
Very low airflow
Compressor OFF
1
3 min.restart
prevention
6 min. restart
prevention
2A
B
B
A
1
2
1
Hot adjust start
FAN SPEED very low
Compressor ON
10-minute
ompressor
operation
Allowan e an el
Heating
area
FAN STOP
Airflow area
20 min.elapse
Airflow area
Heating area
Outdoor unit
trouble
Airflow area
Cooling area
Defrost operation
START
Four-way valve
OFF
Indoor piping
55°C or lower
Auxiliary heater
ON
Indoor piping
60°C or higher
Auxiliary heater OFF
Overheat remote
START
Indoor unit
70°C or higher
Allowan e
period
Overload prote t
Auxiliary heater
thermostat ON
Auxiliary heater ON
6-minute restart
prevention
Allowan e set
Compressor OFF
Indoor piping
35°C or higher
HOT adjust
6 min. elapse
FAN SPEED
Low
FAN SPEED
Low 2 min.
elapse
FAN SPEED
setting nit h
Hot adjust
release
PLHKKHC
3-minute
Auxiliary heater
OFF
Indoor oil
thermstor is 60°C
or higher
FAN speed
Low notti
Airflow 10% up FAN setting not h
Auto COOL/HEAT
operation
Initial mode
T1 T0
>
=
COOL mode HEAT mode
COOL mode
T1 < (T0 - 2)
After 15min.
T1<(T0-2)
COOL operation HEAT operation
11
T1>(T0 + 2)
After 15min.
T1>(T0 + 2)
HEAT operation Cool mode
set
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
w15 YES
YES
YES
YES
YES
YES
w16
w11
w9
w11
w11
w10
w17
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 ase of( i ), (ii) and (iii) above, airflow is horizontal regardless the VANE setting.
w16 When AUTO operation is started, COOL or HEAT mode is sele ted automati ally.
w17 T1 : Room temperature.
To : Set temperature

20
w 8—9 Refer to page 26~27.
w 12 When room temperature is 18°C or below, the ompressor annot operate.
When room temperature rises over 18°C, the ompressor starts after a 3-minute time delay.
w 13 Compressor ON time is de ided by room temperature. Refer to page 26~27.
w 14 In dry operation, ompressor ON makes the fan speed LOW and ompressor OFF stops the fan.
It is not possible to set the fan speed with the remote ontroller
DR OPERATION
DRY
operation
Four-way valve / OFF
Initial dry
operation
Room tempereature is
18°C or lower
During
ompressor ON
Compressor &
thermostat ON
Vane initial setting
Vane
setting not h
10-minute ompressor
OFF timer start
Compressor OFF
Fan STOP
3-minute
time delay
10-minute
ompressor
OFF
Compressor ON
time set
Compressor ON
Fan speed LOW
1
Compressor &
thermostat
ON
3-minute
ompressor
operation
Compressor ON
time ompletes
NO
YES
NO
NO
YES
w14 w14
w13
YES
YES NO
YES NO
NO
w9
YES
YES
w9
NO
NO
w12
YES
NO
YES w8