Mitsubishi PKH-1.6GKLH Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. PART NAMES AND FUNCTIONS.......................2
2. SPECIFICATIONS ...............................................4
3. DATA....................................................................6
4. OUTLINES AND DIMENSIONS ........................14
5. WIRING DIAGRAM............................................ 15
6. REFRIGERANT SYSTEM DIAGRAM...............16
7. OPERATION FLOW-CHART.............................17
8. MICROPROCESSOR CONTROL .....................21
9. TROUBLESHOOTING....................................... 41
10. SYSTEM CONTROL.......................................... 51
11. DISASSEMBLY PROCEDURE..........................56
12. PARTS LIST....................................................... 60
13. OPTIONAL PARTS............................................63
Indoor unit
ON/OFF
Remote controller
Indoor unit
[ Model names ] [ Service Ref. ]
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
No.OC229
REVISED EDITION-A
October 2012
Revision :
• The indicated No. of CORNER
COVER (page 62) has
been corrected in REVISED
EDITION-A.
• Some descriptions have been
modified.
• Please void OC229.
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH Note :
• This manual does not cover the
following outdoor units. When
servicing them, please refer to
the service manual No.OC128
REVISED EDITION-A and this
manual in a set.
[Service Ref.]
PUH-1.6VKA2
PUH-2VKA2

2 33
1 PART NAMES AND FUNCTIONS
● Indoor Unit
Air intake Air intake grille
Filter
Air outlet
Guide vane
Auto vane
Use the specied refrigerant only
Never use any refrigerant other than that specied.
Doing so may cause a burst, an explosion, or re when the unit is being used, serviced, or disposed of.
Correct refrigerant is specied in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
OC229A

2 33
display
The vertical direction of airflow is indicated.
display
FAN SPEED display indicates which fan speed
has been selected.
ON/OFF
RESET
MODE FAN
VANE
TEMP.
START
STOP
HR.
MIN.
ON/OFF
CHECK
ADDRESS
UNIT No.
FUNCTION No.
SELECTION No.
AM
PM
RESET
AM
PM
TEST RUN
FUNCTION
°C
MODE FAN
VANE
TEMP.
START
STOP
HR.
MIN.
● Wireless remote controller
● When cover is open.
display
Displays when batteries are dead.
display
Lights up when function are set.
display
The unit is turned ON and OFF alternately
each time the button is pressed.
MODE SELECT button
Used to switch the operation mode between
cooling, drying, blowing, heating and auto
mode.
FAN SPEED SELECT button
Used to change the fan speed.
VANE CONTROL button
Used to change the airflow direction.
HR. and MIN.buttons
Buttons used to set the “hour and minute” of
the current time and timer settings.
● When cover is open.
display
OPERATION MODE display
Operation mode display indicates which
operation mode is in effect.
TEMP. button
SET TEMPERATURE button sets any desired
room temperature.
display
SET TEMP. display indicates desired tempera-
ture set.
CLOCK display
Displays the current time.
“ ”display
Flashes when the current time is displayed.
TIMER display
Displays when in timer operation or when set-
ting timer.
“ ” “ ” display
Displays the order of timer operation.
“ ” “ ” display
Displays whether timer is on or off.
“ ” “ ” display
Displays when the current time and the timer
time can be changed.
▼
▼
TIMER CONTROL buttons
STOP (OFF timer): when this switch is set, the
air conditioner will be automatically stopped at
the preset time.
START (ON timer): when this switch is set, the
air conditioner will be automatically started at
the preset time.
TEST RUN CHECK display
CHECK&TEST RUN display indicates that the
unit is being checked or test-run.
FUNCTION
SELECTION NO. display
Displays the selection number.
UNIT NO. display
Displays the number of unit.
FUNCTION NO. display
Displays the mode.
ADDRESS display
Displays the refrigerant address.
display
Lights up while transmission to the indoor unit
is mode using switches.
RESET button
button
OC229A

4 55
2SPECIFICATIONS
Item
Function
Capacity
Total input
Service Ref.
Power supply(phase, cycle, voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) × No.
Fan motor output
Airflow(Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-High)
Unit drain pipe 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 Fan(drive)×No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil<Model>
Pipe size O.D.
Connection method
Between the indoor & outdoor unit
Service Ref.
W
D
H
W
D
H
Liquid (in.)
Gas (in.)
Indoor side
Outdoor side
Height difference
Piping length
INDOOR UNITOUTDOOR UNIT
REFRIGERANT PIPING
W
Btu/h
kW
kW
A
A
kW
m3/7<CFM>
Pa(mmAq)
kW

(in.)
(in.)
(in.)
(in.)
kg(lbs)
kW
A
A
kW
kW
m3/7<CFM>

(in.)
(in.)
(in.)
kg(lbs)
kg(lbs)
L
PKH-1.6GKL
PKH-1.6GKLH
Cooling
4,500
15,350
1.51
0.07
0.33
0.40
1.44
6.74
Heating
4,650 (5,450)
15,900 (18,600)
1.48 (2.28)
0.07 (0.87)
0.33 (3.66)
0.40 (3.73)
1.41
6.60
PKH-1.6GKL
PKH-1.6GKLH
Single, 50Hz, 220-240V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Line flow(direct) × 1
0.030
9-12 (318-424)
0(direct blow)
(0.8)
Remote controller & built-in
36-43
20(13/16)
990 (39)
235 (9-1/4)
340 (13-3/8)
16(35) (17(37))
PUH-1.6VKA2
Single, 50Hz, 220-240V
33
Munsell 5Y 7/1
Capillary tube
Hermetic
RH247VFC
1.2
Line start
Internal thermostat, HP switch
Plate fin coil
Propeller (direct) × 1
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(4.9)
0.57<MS-56>
9.52(3/8)
15.88(5/8)
Flared
Flared
Max. 40m
Max. 40m
2. Guaranteed operating range
Cooling
Heating
Upper limit
Lower limit
Upper limit
Lower limit
Indoor
D.B. 35, W.B. 22.5
D.B. 21, W.B. 15.5
D.B. 27
D.B. 20
Outdoor
D.B. 46
D.B. -5
D.B. 21, W.B. 15.5 
D.B. -8.5, W.B. -9.5
Note1. Rating Conditions (JIS B 8616)
Cooling : Indoor : D.B. 27°C (80°F), W.B. 19°C (66°F)
Outdoor : D.B. 35°C (95°F), W.B. 24°C (75°F)
Heating : Indoor : D.B. 20°C (68°F)
Outdoor : D.B. 7°C (45°F), W.B. 6°C (43°F)
OC229A

4 55
Item
Function
Capacity
Total input
Service Ref.
Power supply(phase, cycle, voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) × No.
Fan motor output
Airflow(Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-High)
Unit drain pipe 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 Fan(drive)×No.
Fan motor output
Airflow
Defrost method
Noise level
Dimensions
Weight
Refrigerant
Charge
Oil<Model>
Pipe size O.D.
Connection method
Between the indoor & outdoor unit
Service Ref.
W
D
H
W
D
H
Liquid (in.)
Gas (in.)
Indoor side
Outdoor side
Height difference
Piping length
INDOOR UNITOUTDOOR UNIT
REFRIGERANT PIPING
W
Btu/h
kW
kW
A
A
kW
m3/7<CFM>
Pa(mmAq)
kW

(in.)
(in.)
(in.)
(in.)
kg(lbs)
kW
A
A
kW
kW
m3/7<CFM>

(in.)
(in.)
(in.)
kg(lbs)
kg(lbs)
L
PKH-2GKL
PKH-2GKLH
Cooling
5,500
18,800
2.27
0.07
0.33
0.40
2.20
9.86
Heating
6,250 (7,050)
21,300 (24,100)
2.29 (3.09)
0.07 (0.87)
0.33 (3.66)
0.40 (3.73)
2.22
9.95
PKH-2GKL
PKH-2GKLH
Single, 50Hz, 220-240V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Line flow(direct) × 1
0.030
9-12 (318-424)
0(direct blow)
(0.8)
Remote controller & built-in
36-43
20(13/16)
990 (39)
235 (9-1/4)
340 (13-3/8)
16(35) (17(37))
PUH-2VKA2
Single, 50Hz, 220-240V
45
Munsell 5Y 7/1
Capillary tube
Hermetic
NH38VMD
1.7
Line start
Internal thermostat, HP switch
Plate fin coil
Propeller (direct) × 1
0.065
45(1,590)
Reverse cycle
49
870(34-1/4)
295+24(11-5/8 add 1)
650(25-5/8)
64(141)
R-22
2.2(4.9)
1.2<MS-32>
9.52(3/8)
15.88(5/8)
Flared
Flared
Max. 40m
Max. 40m
2. Guaranteed operating range
Cooling
Heating
Upper limit
Lower limit
Upper limit
Lower limit
Indoor
D.B. 35, W.B. 22.5
D.B. 21, W.B. 15.5
D.B. 27
D.B. 20
Outdoor
D.B. 46
D.B. -5
D.B. 21, W.B. 15.5 
D.B. -8.5, W.B. -9.5
Note1. Rating Conditions (JIS B 8616)
Cooling : Indoor : D.B. 27°C (80°F), W.B. 19°C (66°F)
Outdoor : D.B. 35°C (95°F), W.B. 24°C (75°F)
Heating : Indoor : D.B. 20°C (68°F)
Outdoor : D.B. 7°C (45°F), W.B. 6°C (43°F)
OC229A

6 77
3 DATA
1. PERFORMANCE DATA
1) COOLING CAPACITY<1>
PKH-1.6GKL
PKH-1.6GKLH
Outdoor intake air D.B.(°C)
20 25 30
Indoor
Intake air
D.B.(°C)
Indoor
Intake air
W.B.(°C)
20
20
20
22
22
22
24
24
24
24
26
26
26
26
27
27
27
27
28
28
28
28
30
30
30
30
32
32
32
32
16
18
20
16
18
20
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
4540
4834
5131
4540
4834
5131
4540
4834
5131
5431
4540
4834
5131
5431
4540
4834
5131
5431
4540
4834
5131
5431
4540
4834
5131
5431
4540
4834
5131
5431
SHC(W)
2996
2610
2155
3359
2997
2565
3723
3384
2976
2498
4086
3770
3386
2933
4267
3964
3592
3150
4449
4157
3797
3367
4540
4544
4207
3802
4540
4834
4618
4236
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.21
1.23
1.26
1.21
1.23
1.26
1.21
1.23
1.26
1.28
1.21
1.23
1.26
1.28
1.21
1.23
1.26
1.28
1.21
1.23
1.26
1.28
1.21
1.23
1.26
1.28
1.21
1.23
1.26
1.28
CA
4415
4706
5010
4415
4706
5010
4415
4706
5010
5327
4415
4706
5010
5327
4415
4706
5010
5327
4415
4706
5010
5327
4415
4706
5010
5327
4415
4706
5010
5327
SHC(W)
2914
2541
2104
3267
2918
2505
3621
3294
2906
2450
3974
3671
3307
2877
4151
3859
3507
3090
4327
4047
3708
3303
4415
4424
4108
3729
4415
4706
4509
4155
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.26
1.29
1.31
1.26
1.29
1.31
1.26
1.29
1.31
1.34
1.26
1.29
1.31
1.34
1.26
1.29
1.31
1.34
1.26
1.29
1.31
1.34
1.26
1.29
1.31
1.34
1.26
1.29
1.31
1.34
CA
4253
4535
4831
4253
4535
4831
4253
4535
4831
5142
4253
4535
4831
5142
4253
4535
4831
5142
4253
4535
4831
5142
4253
4535
4831
5142
4253
4535
4831
5142
SHC(W)
2807
2449
2029
3147
2812
2416
3488
3174
2802
2365
3828
3537
3189
2777
3998
3719
3382
2983
4168
3900
3575
3188
4253
4263
3962
3600
4253
4535
4348
4011
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.36
1.39
1.42
1.36
1.39
1.42
1.36
1.39
1.42
1.45
1.36
1.39
1.42
1.45
1.36
1.39
1.42
1.45
1.36
1.39
1.42
1.45
1.36
1.39
1.42
1.45
1.36
1.39
1.42
1.45
CA : Capacity (W) SHC(W) : Sensible heat capacity
P.C. : Power consumption (kW) SHF : Sensible heat factor
OC229A

6 77
COOLING CAPACITY<2>
PKH-1.6GKL
PKH-1.6GKLH
Outdoor intake air D.B.(°C)
35 40 45
Indoor
Intake air
D.B.(°C)
Indoor
Intake air
W.B.(°C)
20
20
20
22
22
22
24
24
24
24
26
26
26
26
27
27
27
27
28
28
28
28
30
30
30
30
32
32
32
32
16
18
20
16
18
20
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
4081
4355
4645
4081
4355
4645
4081
4355
4645
4950
4081
4355
4645
4950
4081
4355
4645
4950
4081
4355
4645
4950
4081
4355
4645
4950
4081
4355
4645
4950
SHC(W)
2693
2352
1951
3020
2700
2322
3346
3049
2694
2277
3673
3397
3066
2673
3836
3571
3251
2871
3999
3745
3437
3069
4081
4094
3809
3465
4081
4355
4180
3861
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.46
1.49
1.53
1.46
1.49
1.53
1.46
1.49
1.53
1.56
1.46
1.49
1.53
1.56
1.46
1.49
1.53
1.56
1.46
1.49
1.53
1.56
1.46
1.49
1.53
1.56
1.46
1.49
1.53
1.56
CA
3899
4167
4451
3899
4167
4451
3899
4167
4451
4750
3899
4167
4451
4750
3899
4167
4451
4750
3899
4167
4451
4750
3899
4167
4451
4750
3899
4167
4451
4750
SHC(W)
2573
2250
1869
2885
2583
2225
3197
2917
2581
2185
3509
3250
2937
2565
3665
3417
3116
2755
3821
3583
3294
2945
3899
3917
3650
3325
3899
4167
4006
3705
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.55
1.59
1.64
1.55
1.59
1.64
1.55
1.59
1.64
1.68
1.55
1.59
1.64
1.68
1.55
1.59
1.64
1.68
1.55
1.59
1.64
1.68
1.55
1.59
1.64
1.68
1.55
1.59
1.64
1.68
CA
3706
3970
4249
3706
3970
4249
3706
3970
4249
4543
3706
3970
4249
4543
3706
3970
4249
4543
3706
3970
4249
4543
3706
3970
4249
4543
3706
3970
4249
4543
SHC(W)
2446
2144
1785
2743
2461
2124
3039
2779
2464
2090
3335
3097
2804
2453
3484
3255
2974
2635
3632
3414
3144
2817
3706
3732
3484
3180
3706
3970
3824
3543
SHF
0.66
0.54
0.42
0.74
0.62
0.50
0.82
0.70
0.58
0.46
0.90
0.78
0.66
0.54
0.94
0.82
0.70
0.58
0.98
0.86
0.74
0.62
1.00
0.94
0.82
0.70
1.00
1.00
0.90
0.78
P.C.
1.65
1.70
1.75
1.65
1.70
1.75
1.65
1.70
1.75
1.81
1.65
1.70
1.75
1.81
1.65
1.70
1.75
1.81
1.65
1.70
1.75
1.81
1.65
1.70
1.75
1.81
1.65
1.70
1.75
1.81
CA : Capacity (W) SHC(W) : Sensible heat capacity
P.C. : Power consumption (kW) SHF : Sensible heat factor
OC229A

8 9
9
COOLING CAPACITY<3>
PKH-2GKL
PKH-2GKLH
Outdoor intake air D.B.(°C)
20 25 30
Indoor
Intake air
D.B.(°C)
Indoor
Intake air
W.B.(°C)
20
20
20
22
22
22
24
24
24
24
26
26
26
26
27
27
27
27
28
28
28
28
30
30
30
30
32
32
32
32
16
18
20
16
18
20
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
5549
5908
6271
5549
5908
6271
5549
5908
6271
6638
5549
5908
6271
6638
5549
5908
6271
6638
5549
5908
6271
6638
5549
5908
6271
6638
5549
5908
6271
6638
SHC(W)
3274
2777
2195
3718
3249
2696
4161
3722
3198
2589
4605
4195
3700
3120
4827
4431
3951
3385
5049
4667
4202
3651
5493
5140
4703
4182
5549
5612
5205
4713
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
P.C.
1.82
1.86
1.89
1.82
1.86
1.89
1.82
1.86
1.89
1.93
1.82
1.86
1.89
1.93
1.82
1.86
1.89
1.93
1.82
1.86
1.89
1.93
1.82
1.86
1.89
1.93
1.82
1.86
1.89
1.93
CA
5397
5752
6124
5397
5752
6124
5397
5752
6124
6511
5397
5752
6124
6511
5397
5752
6124
6511
5397
5752
6124
6511
5397
5752
6124
6511
5397
5752
6124
6511
SHC(W)
3184
2704
2143
3616
3164
2633
4048
3624
3123
2539
4479
4084
3613
3060
4695
4314
3858
3320
4911
4544
4103
3581
5343
5004
4593
4102
5397
5465
5083
4623
P.C.
1.90
1.94
1.97
1.90
1.94
1.97
1.90
1.94
1.97
2.01
1.90
1.94
1.97
2.01
1.90
1.94
1.97
2.01
1.90
1.94
1.97
2.01
1.90
1.94
1.97
2.01
1.90
1.94
1.97
2.01
CA
5198
5543
5905
5198
5543
5905
5198
5543
5905
6285
5198
5543
5905
6285
5198
5543
5905
6285
5198
5543
5905
6285
5198
5543
5905
6285
5198
5543
5905
6285
SHC(W)
3067
2605
2067
3483
3049
2539
3899
3492
3012
2451
4315
3935
3484
2954
4523
4157
3720
3205
4731
4379
3956
3457
5146
4822
4429
3960
5198
5266
4901
4462
P.C.
2.04
2.09
2.13
2.04
2.09
2.13
2.04
2.09
2.13
2.18
2.04
2.09
2.13
2.18
2.04
2.09
2.13
2.18
2.04
2.09
2.13
2.18
2.04
2.09
2.13
2.18
2.04
2.09
2.13
2.18
CA : Capacity (W) SHC(W) : Sensible heat capacity
P.C. : Power consumption (kW) SHF : Sensible heat factor
OC229A

8 9
9
COOLING CAPACITY<4>
PKH-2GKL
PKH-2GKLH
Outdoor intake air D.B.(°C)
35 40 45
Indoor
Intake air
D.B.(°C)
Indoor
Intake air
W.B.(°C)
20
20
20
22
22
22
24
24
24
24
26
26
26
26
27
27
27
27
28
28
28
28
30
30
30
30
32
32
32
32
16
18
20
16
18
20
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
4988
5323
5677
4988
5323
5677
4988
5323
5677
6050
4988
5323
5677
6050
4988
5323
5677
6050
4988
5323
5677
6050
4988
5323
5677
6050
4988
5323
5677
6050
SHC(W)
2943
2502
1987
3342
2928
2411
3741
3353
2895
2360
4140
3779
3349
2844
4339
3992
3577
3086
4539
4205
3804
3328
4938
4631
4258
3812
4988
5057
4712
4296
P.C.
2.19
2.24
2.30
2.19
2.24
2.30
2.19
2.24
2.30
2.35
2.19
2.24
2.30
2.35
2.19
2.24
2.30
2.35
2.19
2.24
2.30
2.35
2.19
2.24
2.30
2.35
2.19
2.24
2.30
2.35
CA
4765
5093
5440
4765
5093
5440
4765
5093
5440
5806
4765
5093
5440
5806
4765
5093
5440
5806
4765
5093
5440
5806
4765
5093
5440
5806
4765
5093
5440
5806
SHC(W)
2811
2394
1904
3192
2801
2339
3574
3208
2774
2264
3955
3616
3209
2729
4145
3820
3427
2961
4336
4023
3645
3193
4717
4431
4080
3658
4765
4838
4515
4122
P.C.
2.34
2.40
2.46
2.34
2.40
2.46
2.34
2.40
2.46
2.53
2.34
2.40
2.46
2.53
2.34
2.40
2.46
2.53
2.34
2.40
2.46
2.53
2.34
2.40
2.46
2.53
2.34
2.40
2.46
2.53
CA
4530
4852
5193
4530
4852
5193
4530
4852
5193
5552
4530
4852
5193
5552
4530
4852
5193
5552
4530
4852
5193
5552
4530
4852
5193
5552
4530
4852
5193
5552
SHC(W)
2673
2281
1818
3035
2669
2233
3397
3057
2648
2165
3760
3445
3064
2610
3941
3639
3272
2832
4122
3833
3479
3054
4484
4221
3895
3498
4530
4610
4310
3942
P.C.
2.49
2.55
2.63
2.49
2.55
2.63
2.49
2.55
2.63
2.71
2.49
2.55
2.63
2.71
2.49
2.55
2.63
2.71
2.49
2.55
2.63
2.71
2.49
2.55
2.63
2.71
2.49
2.55
2.63
2.71
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
SHF
0.59
0.47
0.35
0.67
0.55
0.43
0.75
0.63
0.51
0.39
0.83
0.71
0.59
0.47
0.87
0.75
0.63
0.51
0.91
0.79
0.67
0.55
0.99
0.87
0.75
0.63
1.00
0.95
0.83
0.71
CA : Capacity (W) SHC(W) : Sensible heat capacity
P.C. : Power consumption (kW) SHF : Sensible heat factor
OC229A

10 11
11
Service Ref.
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
Refrigerant piping length(one way)
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
1.00
1.00
0.993
0.992
0.984
0.983
0.978
0.978
0.969
0.966
0.961
0.959
0.956
0.950
0.948
0.945
—
—
—
—
Cooling capacity correction factors
15
20
25
15
20
25
CA
3,184
3,049
2,930
4,280
4,098
3,939
P.C.
1.01
1.09
1.15
1.56
1.68
1.79
CA
3,650
3,506
3,364
4,905
4,713
4,521
P.C.
1.12
1.20
1.28
1.73
1.86
1.98
CA
4,160
4,003
3,844
5,591
5,380
5,167
P.C.
1.23
1.32
1.42
1.90
2.05
2.19
CA
4,714
4,538
4,370
6,336
6,100
5,874
P.C.
1.35
1.45
1.56
2.09
2.25
2.41
CA
5,312
5,112
4,942
7,139
6,871
6,643
P.C.
1.48
1.59
1.70
2.28
2.46
2.64
CA
5,952
5,724
5,560
8,000
7,693
7,473
P.C.
1.61
1.73
1.86
2.49
2.68
2.87
-10 -5 0Service Ref. Indoor
intake
air
D.B.(°C)
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
5
Outdoor intake air W.B.(°C) 10 15
2) HEATING CAPACITY CA : Capacity (W)
P.C. : Power consumption (kW)
Service Ref.
PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
Refrigerant piping length(one way)
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.998
0.998
0.995
0.995
—
—
—
—
Heating capacity correction factors
2. PERFORMANCE CURVE
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 W.B. (°C)
INDOOR D.B. (°C)
INDOOR D.B. (°C)
15
20
25
25
20
15
TOTAL INPUT (RATIO) CAPACITY (RATIO)
Heating
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 25 35 46
OUTDOOR D.B.(°C)
TOTAL INPUT (RATIO) CAPACITY (RATIO)
INDOOR W.B.(°C)
INDOOR W.B.(°C)
22
20
18
16
22
20
18
16
Cooling
OC229A

10 11
11
Service Ref. Indoor unit
Outdoor unit
PKH-1.6GKL
PKH-1.6GKLH
PUH-1.6VKA2
Cool
4,450
1.47
0.07
0.33
0.40
1.40
6.76
32
4,600
(5,330)
1.43
(2.16)
0.07
(0.80)
0.33
(3.50)
0.40
(3.57)
Heat
1.36
6.57
32
6,200
(6,930)
2.25
(2.98)
0.07
(0.80)
0.33
(3.50)
0.40
(3.57)
Cool
5,450
2.23
0.07
0.33
0.40
2.16
9.78
44
Heat
2.18
9.87
44
PKH-2GKL
PKH-2GKLH
PUH-2VKA2
Outdoor
unit Indoor
unit
Mode
Capacity(W)
Total Input(kW)
Input(kW)
Current(A)
Starting current(A)
Input(kW)
Current(A)
Starting current(A)
Indoor unit 230V 50Hz 1phase
Outdoor unit 230V 50Hz 1phase
Service Ref.
Indoor unit
Outdoor unit
PKH-1.6GKL
PKH-1.6GKLH
PUH-1.6VKA2
Cool
4,500
1.51
0.07
0.33
0.40
1.44
6.74
33
4,650
(5,450)
1.48
(2.28)
0.07
(0.87)
0.33
(3.66)
0.40
(3.73)
Heat
1.41
6.60
33
6,250
(7,050)
2.29
(3.09)
0.07
(0.87)
0.33
(3.66)
0.40
(3.73)
Cool
5,500
2.27
0.07
0.33
0.40
2.20
9.86
45
Heat
2.22
9.95
45
PKH-2GKL
PKH-2GKLH
PUH-2VKA2
Outdoor
unit
Indoor
unit
Mode
Capacity(W)
Total Input(kW)
Input(kW)
Current(A)
Starting current(A)
Input(kW)
Current(A)
Starting current(A)
Indoor unit 240V 50Hz 1phase
Outdoor unit 240V 50Hz 1phase
w: ( ) shows the heater on rating.
w: ( ) shows the heater on rating.
Service Ref. Indoor unit
Outdoor unit
PKH-1.6GKL
PKH-1.6GKLH
PUH-1.6VKA2
Cool
4,400
1.43
0.07
0.33
0.40
1.36
6.79
30
4,550
(5,220)
1.39
(2.06)
0.07
(0.74)
0.33
(3.38)
0.40
(3.45)
Heat
1.32
6.59
30
6,150
(6,820)
2.21
(2.88)
0.07
(0.74)
0.33
(3.38)
0.40
(3.45)
Cool
5,400
2.19
0.07
0.33
0.40
2.12
9.83
43
Heat
2.14
9.93
43
PKH-2GKL
PKH-2GKLH
PUH-2VKA2
Outdoor
unit Indoor
unit
Mode
Capacity(W)
Total Input(kW)
Input(kW)
Current(A)
Starting current(A)
Input(kW)
Current(A)
Starting current(A)
3. ELECTRICAL DATA
Indoor unit 220V 50Hz 1phase
Outdoor unit 220V 50Hz 1phase
w: ( ) shows the heater on rating.
OC229A

12 13
13
Outdoor unit Service Ref.
Service Ref. PKH-1.6GKL
PKH-1.6GKLH
Without electric heater
With electric heater
Without electric heater
With electric heater PKH-1.6GKL
PKH-1.6GKLH
PKH-2GKL
PKH-2GKLH
PKH-2GKL
PKH-2GKLH
CoolingMode
Capacity W
Input
Indoor unit
Service Ref.
Phase, Hz
Volts
Amperes
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
kW
V
A
V
A
4,500
1.51
Heating
4,650
[5,450]
0.33 0.33
[3.66] 0.33 [3.66]
6.74
1.77
(18.0)1.92 (19.6) 2.08 (21.2)
0.46
(4.7)0.37 (3.8)
0.54
(5.5)
79
47
8
5
27
19
13.3
35
24
0.76
0.10
6.60
1.85
(18.8)
0.41
(4.2)
83
48
0.6
5
20
15
39.2
7
6
-
-
1, 50
240
1, 50
240
PUH-1.6VKA2
Cooling Heating
5,500
2.27
6,250
[7,050]
2.29
[3.09]
1.48
[2.28]
0.33
9.86 9.95
87 93
51 54
4 –2
5 5
27 20
19 15
11.7 45.4
35 7
24 6
0.69 -
0.12 -
1, 50
1, 50
240
240
PUH-2VKA2
°C
°C
°C
°C
BF
SHF
°C
D.B.
D.B.
W.B.
D.B.
W.B.
°C
°C
°C
m
MPa
(kg/cm2)
MPa
(kg/cm2)
Outdoor
side Indoor side Refrigerant circuit Electrical circuit Total
Air flow m3/ min
Air speed m/ sec
Coverage range m (ft)
PKH-1.6GKL
PKH-1.6GKLH PKH-2GKL PKH-2GKLH
12
5.3
10(32.8)
12
5.3
10(32.8)
Item
Service Ref.
4. STANDARD OPERATION DATA
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 got according to the formula below.
1(Mpa) = 10.2(kg/cm²)
5. OUTLET AIR SPEED AND COVERAGE RANGE
The air coverage range is the value up to the position where the air speed is 0.25m/sec. when air is blown out horizontally from
the unit at the Hi notch position.
The coverage range should be used only as a general guideline since it varies according to the size of the room and the furni-
ture inside the room.
OC229A

12 13
13
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PKH-1.6/2GKL
PKH-1.6/2GKLH Hi
NOTCH
Lo 43
SPL(dB)
36
LINE
6. NOISE CRITERION CURVES
UNIT WALL
1m
1m
MICROPHONE
Ambient temperature 27
Test conditions are based on JIS Z8731
OC229A

14 15
15
4OUTLINES AND DIMENSIONS
1. INDOOR UNIT
PKH-1.6GKL / PKH-2GKL
PKH-1.6GKLH / PKH-2GKLH
Unit : mm
BYOFF
ON STAND HEATCOOL
OFF BY
ON STAND COOL HEAT
r.SLI
m m
MITSUBISHIELECTRIC
r.S L I
m m
MITSUBISHIELECTRIC
21
Right side Less than 15
70 245
60
235
Auto vane
Front view
198 Air intake
53 340
715 Air intake 225
340 Air intake 80 280 Air intake 233
990
21
Left side
Knockout hole
for left piping.
Refrigerant pipe.
Drain pipe.
Wiring hole.
Knockout hole
for left piping.
Refrigerant pipe.
Drain pipe.
Wiring hole.
60
70 245
(Necessary clearance for
Unit installation)
Right side
Allowing clearances
Front view
Less than 130
50 or more 150 or more
180 or more 30 or more
for bolts
Left-rear
piping hole
left-rear piping
R52.5
R52.5
Installation plate
balance point hole
Details of installation plate
49-:5hole
for tapping screw
Knockout hole for
right-rear piping Right-rear piping hole
Unit center
14-:14hole
Knockout hole for
425
420
170 190
210 230
0
322
0
35
55
80
130
190
230
272
310
0
35 95 150 205 260 320 345 495 20 75 135 190 245 300 360 405 495
32 0
+1 Sleeves are available on the market.
+2 This size shows the lower end of through hole.
:90~:100:90 Through holeSleeve +1 1.6 .2
Model
R52.5
R52.5
Gas pipe
Liquid pipe
Terminal block for
Terminal block to
outdoor unit
Filter grip
Service panel
(Power supply access)
5/8F
Gas pipeLiquid pipe
3/8F1.6 .2
Model
(Right side piping
installation)
(Left side piping
installation)
Unit drain pipe O.D.20
Front view(to open the grille)
700 (Flexible hose total length800)
581 86
449 54
31 280
35
Knockout hole for under piping
Refrigerant piping.Drain pipe.
Wiring hole
12-Louvers(manual)
Lower side
80
50
395400 190
60
70 35
79
160 40
235
705 Air outlet
power supply
153
+2
OC229A

14 15
15
5WIRING DIAGRAM
PKH-1.6GKL / PKH-2GKL
PKH-1.6GKLH / PKH-2GKLH
The black square ( ) indicates
a switch position.
OC229A

16 17
17
6REFRIGERANT SYSTEM DIAGRAM
Indoor
heat
exchanger
Indoor unit Refrigerant pipe
(option)
15.88mm( 5/8")
(with heat insulator)
Refrigerant pipe
(option)
9.52mm( 3/8")
(with heat insulator)
Flexible tube
Flared
connection
Strainer
Ball
valve
Ball valve
(with Service port)
Oil separator
4-way valve
Service
port
Service
port
High pressure
control switch
Accumulator
Compressor
Strainer
Restrictor
valve
Outdoor heat exchanger
Outdoor coil
thermistor
(TH)
Pipe
temperature
thermistor
(RT2)
PKH-1.6, 2 (O.D.3.2 I.D.1.8 L500)
PUH-1.6 (O.D.3.2 I.D.1.8 L400)
PUH-2 (O.D.4.0 I.D.2.0 L430)
Distributor
with
strainer Capillary
tube
Capillary
tube
Restrictor
valve
Strainer
Bypass
valve
Outdoor unit
PKH-1.6GKL, PKH-1.6GKLH / PUH-1.6VKA2
PKH-2GKL, PKH-2GKLH / PUH-2VKA2
Unit : mm
<4-Way valve solenoid coil>
Heating ON
Cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
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16 17
17
7OPERATION FLOW-CHART
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
+1
+2
+3
+4
+5
+7
+6
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
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-Pipe temperature thermistor malfunction
● P4-Drain sensor malfunction
● P5-Drain overflow
● P6-Coil frost/overheat protection
● P7-System error
● P8-Outdoor unit trouble
w3 The CHECK switch 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 dip switch setting.
w7 In FAN mode, fan speed and vane operation depend on the remote controller setting. (Compressor is OFF.)
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18 19
19
COOL operation
Four-way valve/OFF
Initial
COOLING
NO
NO
NO
NO
NO
YES
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
+8
+9
Vane initial
setting
Vane
50 deg downward angle
60 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
compressoroperation
Coil frost
protection
Cooling area
10-minute
compressor operation
Allowance cancel
Coil frost
prevention
16-minute
compressoroperation
Indoor pipe
temperature is
1°C or lower
Compressor ON
1
+10
+11
Coil frost
prevention
Compressor OFF
Pipe
temperature is
10°C or higher
Defrosting protection
detection temperature
-1°C or lower
YES
NO
6-minute
time delay 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
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 pipe temperature thermistor reads -15°C or below for 3 minutes, the compres-
sor will stop for 6 minutes.
w11 Heating area : Pipe temperature is more than 5 degrees above the room temperature.
Cooling area : Pipe temperature is more than 5 degrees below the room temperature.
FAN area : Pipe temperature is within 5 degrees either way of the room temperature.
OC229A

18 19
19
Heat operation
initial
HEATING
Vane setting notch Vane initial setting
defrosting
Heating area
Defrost release
Defrost
30 min. elapse
Outdoor unit trouble
Four-way valve ON
Hot adjust
in process
Compressor ON
Compressor
thermostat ON
Allowance cancel
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
2
A
BB
A
1
2
1
Hot adjust start
FAN SPEED very low
Compressor ON
10-minute
compressor
operation
Allowance cancel
Heating
area
FAN STOP
FAN area
20 min.elaspe
FAN area
Heating area
Outdoor unit
trouble
FAN 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
Allowance
period
Overload protect
Auxiliary heater
thermostat ON
Auxiliary heater ON
6-minute restart
prevention
Allowance set
Compressor OFF
Indoor piping
35°C or higher
HOT adjust
5 min. elapse
FAN SPEED
Low
FAN SPEED
Low 2 min.
elapse
FAN SPEED
setting notch
Hot adjust
release
PKH-GKLH
Type
3-minute
Auxiliary heater
OFF
Pipe temperature
is 60°C or higher
FAN speed
Low notch
Airflow 10% up
FAN setting notch
Auto COOL/HEAT
operation
Initial mode
T1 To
>
=
COOL mode HEAT mode
COOL mode
T1 (To - 2)
After 15min.
T1 (To-2)
COOL operation HEAT operation
11
T1 (To + 2)
After 15min.
T1 (To + 2)
HEAT operation
Cool mode
set
NO
NO
NO
NO
NO
+17
+16
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
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
+11
+11
+11
+9
+15 +11
+10
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
HEATING OPERATION
AUTOMATIC COOLING/HEATING OPERATION
w15 ( i ) Until Low airflow is set while in 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.
OC229A

20 2121
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. Also, when the compressor OFF and the pipe tempera-
ture is 26°C or less, the fan stops, or when the compressor OFF and the pipe temperature is below 6°C, the fan speed
changes to LOW mode.
It is not possible to set the fan speed with the remote controller
DRY OPERATION
DRY
operation
Four-way valve / OFF
Initial dry
operation
Room temperature 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
NO
YES
w14 w14
w13
YES
YES NO
YES NO
NO
w9
YES
YES
w9
NO
NO
w12
YES
NO
YES w8
OC229A