Mitsubishi Electric Mr. Slim PK-3FLA3 Operating manual

TECHNICAL & SERVICE MANUAL
SPLIT-TYPE,AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGE·························3
2. SPECIFICATIONS·································4
3. DATA·····················································5
4. REFRIGERANT SYSTEM DIAGRAM ········6
5. PARTS LIST··········································7
In oor unit
[ Mo el name ]
PK-3FLA
[ Service Ref. ]
PK-3FLA3
No. OC200
In oor unit
Wall Mounted
Series PK
TEMP
ON / OFF
NOT AVAILABLE
AM
PM
AM
PM
˚C
REMOTE CONTROLLER
This manual does not cover the
ollowing outdoor units. When ser-
vicing them, please re er to the
service manual No.OC187 ,
No.OC127REVISED EDITION-B
and this manual in a set.
[ Service Re . ]
PU-3VJC (OC187)
PU-3YJC (OC187)
PU-3NJA1(OC127REVISED EDTION-B)
This service mamual describes only the
change points.
Please re er to OC129 as to excluding this
mamual.
1999

3
1TECHNICAL CHANGE
Di erences with PK-3FLA2 / PU-3VJA2, PU-3YJA3(OC129).
Change o the Parts No..
Re er to the parts list or the details.
CHANGE POINTS 
COOLING CAPACITY (50Hz)
OUTDOOR UNIT
24600 Btu/h
7200 w
PU-3VJA2
PU-3YJA3

27000 Btu/h
7900 w
PU-3VJC
PU-3YJC

FLA2FLA3

PARTS NAME FLA1,FLA2FLA3
AIR FILTER
UNDER PANEL
TOP PANEL
RECEIVING UNIT
FAN GUARD

R01 12G 500
R01 12G 812
R01 12G 641
—

R01 A17 500



OC129 OC200
FLA1,FLA2
R01 12G 500



T7W E01 812

T7W E00 641
T7W 53J 675
T7W 71J 675
FLA
—
FLA
—T7W 53J 675
R01 24K 658

4
SPECIFICATIONS2
Item Service Ref. PK-3FLA3
PK-3FLA3
27/19°C , 35/24°C
Cooling (JIS B8616)
Munsell 3.4Y 7.7/0.8(White)
Plate fin coil
Line flow (direct) o2
0.04
15 - 20 (530-706)
0 (direct blow)
—
Wireless remote controller & Built-in
39 - 45
20 (13/16)
1,400 (55-1/8)
235 (9-1/4)
340 (13-3/8)
24 (53)
27,000
7,900
3.28 / 3.30 3.28 / 3.30
27,300
8,000
3.54
Single, 50Hz, 220/240V
0.095 / 0.095
0.44 / 0.44 (98/90)
0.7 / 0.8
Single, 60Hz, 220V
0.095
0.44 (98)
0.7
w4
w5
23,500
6,900
4.19
4.09
20.9(89)
80
PU-3VJC
Single, 50Hz, 220/240V
3.18 / 3.20
15.1/13.9(96/96)
54 / 58
PU-3YJC
Three, 50Hz, 380/415V
3.18 / 3.20
5.7/5.3(85/84)
34 / 37
NH52VND
2.2 NH52YDE 2.4
3.44
17.6(89)
80
PU-3NJA1 
Single, 60Hz, 220V
NHJ47NAD
2.2
w6w7
52 53
w6
32 / 38 32 / 38 38
R-22 3.5 (7.7)
Munsell 5Y 7/1
Capillary tube
Hermetic
Line start
Plate fin coil
Propeller (direct) o1
0.085
50 (1765)
—
870 (34-1/4)
295 (+24) (11-5/8 (add 1))
850 (33-7/16)
73 (161)
9.52 (3/8)
15.88 (5/8)
Flared
Flared
w3 Max. 20m
w3 Max. 30m
Condition
Capacity w1
Total input w1
Service Ref.
Power supply(phase, cycle,voltage)
Input
Running current (Power factor)
Starting current
External finish
Heat exchanger
Fan(drive) oNo.
Fan motor output
Airflow (Low-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-High) w2
Unit drain pipe O.D.
Dimensions
Weight
Service Ref.
Power supply (phase, cycle, voltage)
Input
Running current /Power factor
Starting current
External finish
Refrigerant control
Compressor
Model
Motor output
Starter type
Protection devices
Heat exchanger
Fan(drive) o No.
Fan motor output
Airflow
Defrost method
Noise level w2
Dimensions
Weight
Crankcase heater
Refrigerant Charge
Pipe size O.D.
Connection method
Between the indoor &
outdoor units
Btu/h
W
kW
kW
A(%)
A
kW
m3/min(CFM)
Pa,mmAq
kW
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
kW
A(%)
A
kW
kW
m3/min(CFM)
dB
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
W
kg(lbs)
mm(in.)
mm(in.)
Indoor, Outdoor DB/WB°C
Liquid
Gas
W
D
H
W
D
H
REFRIGERANT PIPING
OUTDOOR UNIT
Indoor side
Outdoor side
Height difference
Piping length
INDOOR UNIT
R-22 2.8(6.2)
1. STANDARD SPECIFICATION
w1 Re rigerant piping length (one way) : 5m (16 t)
w2 Noise level is measured in an unacoustic room based on JIS conditions.
w3 Up to 20m it is unnecessary to charge additional re rigerant.
w4 Indoor, Outdoor DB/WB : 29/19°C, 46/24°C
w5 Cooling SSA385, 386
w6 Inner thermostat, HP switch, LP switch.
w7 Thermal switch, Reversed-phase protector, HP switch, LP switch, Thermal relay.

5
3. ADDITIONAL REFRIGERANT CHAREGE (R-22…kg(lbs))
Service Ref. Outdoor unit precharger (kg)
(up to 20m) Re rigerant piping length (one way)
PK-3FLA3V---2.8, Y---2.8, N---3.5 20m (66 t)
025m (82 t) 0.06(0.13) 30m (98 t) 0.12(0.26) 35m (115 t) —40m (131 t) —
3DATA
Notes: 1. T.C.: Total capacity (kW) …(kcal/h)=(kW)x860, (Btu/h)=4x(kW)x860
C.F. : Correction actors o Total input(Indoor unit input + Outdoor unit input)
2. Evaporator air low(CMM) = 20 , Bypass actors = 0.12 , S.H.F. at rating conditions = 0.73
3. Guaranteed operating range(cooling) {Lower limit … In oor : 21°CDB, 15.5°CWB, Out oor : 21°CDB.
Upper limit … In oor : 35°CDB, 22.5°CWB, Out oor : 52°CDB.
COOLING CAPACITY correction factors 50Hz
1. PERFORMANCE DATA
COOLING CAPACITY PK-3FLA3 50Hz
Service Ref. Re rigerant piping length (one way)
5m (16 t)
1.0 10m (33 t) 0.978 15m (49 t) 0.962 20m (66 t) 0.948 25m (82 t) 0.934 30m (98 t) 0.921 35m (115 t) —40m (13 t)
—
PK-3FLA3
C.F
1.10
1.12
1.14
1.15
1.16
1.20
T.C
6.5
7.0
7.2
7.3
7.5
8.0
C.F
1.04
1.06
1.08
1.08
1.09
1.12
T.C
6.8
7.3
7.5
7.6
7.8
8.3
C.F
1.03
1.06
1.07
1.08
1.08
1.11
T.C
6.8
7.3
7.6
7.7
7.8
8.3
C.F
0.96
0.99
1.00
1.00
1.01
1.04
T.C
7.2
7.6
7.9
8.0
8.2
8.7
C.F
0.93
0.95
0.96
0.97
0.97
0.99
T.C
7.3
7.8
8.1
8.2
8.3
8.9
C.F
0.90
0.92
0.93
0.93
0.94
0.96
T.C
7.5
8.0
8.2
8.3
8.5
9.0
C.F
0.84
0.85
0.86
0.86
0.87
0.89
T.C
7.8
8.3
8.5
8.6
8.8
9.4
C.F
0.81
0.82
0.83
0.83
0.84
0.86
T.C
7.9
8.4
8.7
8.8
9.0
9.5
21 Outdoor intake air °C DB 25 30 32.2 35 40 40.6 45
Indoor
intake air
°C WB
16
18
19
19.4
20
22
46 50 52
T.C
6.4
6.9
7.1
7.2
7.4
7.9
T.C
6.2
6.6
6.9
6.9
7.1
7.6
T.C
6.0
6.5
6.7
6.8
6.9
7.4
C.F
1.11
1.14
1.15
1.16
1.17
1.21
C.F
1.16
1.19
1.21
1.22
1.23
1.28
C.F
1.19
1.22
1.24
1.25
1.26
1.31
2.STANDARD OPERATION DATA
Service Ref.
MODE
W
kW
Mpa
(o/f)
Mpa
(o/f)
˚C
˚C
˚C
m
˚C DB
˚C WB
˚C DB
˚C DB
˚C WB
Cooling
PK-3FLA3
Electrical circuitRefrigerant circuit
Indoor side
Outdoor
side
In oor unit Service Ref.
Phase , Hz
Volts
Amperes
Out oor unit Service Ref.
Phase , Hz
Volts
Amperes
Discharge pressure 
Suction pressure
Discharge temperature
Condensing temperature
Suction temperature
Refrigerant pipe length
Intake air temperature
Discharge air temperature
Intake air temperature
Capacity
Input
Total
7900
3.28
Single , 50
PU-3VJC PU-3YJC
1.99
(20.3)
0.47
(4.79)
86
51.0
6
5
27
19
13.0
35
24
6900
4.19
Single , 60
PU-3NJA1
Single , 60
20.9
2.07
(21.1)
0.44
(4.49)
70
53
4
5
29
19
13.2
46
24
PK-3FLA3
220
0.44
220
Single , 50 Three , 50
220 380
15.1 5.7

6
Indoor heat
exchanger
Distributor
with
strainer
Flexible tube
Flared
connection Flared
connection
Re rigerant pipe [15.88(5/8")
(with insulator) option

Re rigerant pipe [ 9.52(3/8")
(with heat insulator) option
Ball
valve
Low pressure
switch
Charge
pIug Check
pIug
High pressure
switch
Outdoor heat
exchanger
Capillary tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
(O.D.3.2 oI.D.1.8 o800) 
o2pcs
strainer
Indoor coil
thermistor
RT2
D.P.R.
(Discharge pressure regulator)
strainer
strainer

Flexible tube
4REFRIGERANT SYSTEM DIAGRAM
PK-3FLA3 / PU-3VJC , PU-3YJC

7
No. Part No. Part name
Specification
Unit Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set Price
1
2
3
4
5
6
7
8
9
10
11
12
R01 12G 661
R01 12G 662
T7W 570 317
R01 12G 691
R01 24K 658
R01 12G 500
R01 A17 500
R01 12G 811
T7W E01 812
T7W E00 641
R01 12G 523
R01 12G 808
—
RIGHT SIDE PANEL
LEFT SIDE PANEL
WIRELESS REMOTE CONTROLLER BOARD
INTAKE GRILLE
RECEIVING UNIT
AIR FILTER
AIR FILTER
NOSE
UNDER PLATE
TOP PLATE
DRAIN SOCKET
BACK PLATE
BOX ASSEMBLY
(BG00A593GM3)
FLA
FLA1
FLA2
PK-3
W.B.
Ru
<W.B.>
1
1
1
2
1
4
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
1
1
1
FLA3
Part number that are circed is not shown in the igure.
STRUCTURAL PARTS
PK-3FLA / PK-3FLA1/ PK-3FLA2/ PK-3FLA3
4
4
6
5
PARTS LIST5

8
No. Part No. Part name
Specification
Unit Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
PK-3 Price
1
2
3
4
5
6
7
8
9
FAN MOTOR
RUBBER MOUNT
MOTOR BAND
MOTOR BAND
MOTOR LEG
RIGHT LINEFLOW FAN
LEFT LINEFLOW FAN
SLEEVE BEARING
SLEEVE BEARING
(BG02H065H01)
(BG02H178H01)
(BG02A534H16)
MF
FLA3
FLA1
FLA2
FLA
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
R01 12G 220
R01 12G 105
—
—
—
R01 13G 115
R01 13G 114
R01 005 103
R01 12G 103
ELECTRICAL PARTS
PK-3FLA/ PK-3FLA1/ PK-3FLA2/ PK-3FLA3
17
37
37 38
34
35 36
27 28 31
25
26
24
23
30
2933
32
16

9
No. Part No. Part name
Specification
Unit Amount
Remarks.
(Drawing No.)
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Price
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
BEARING MOUNT
BEARING MOUNT
BEARING BAND
CENTER SUPPORT
DRAIN PAN
VANE MOTOR
GUIDE VANE
GUIDE VANE (WITH HANDLE)
ARM
AUTO VANE
CENTER COVER
JOINT SHAFT
DRAIN HOSE
HEAT EXCHANGER
INDOOR CONTROLLER BOARD
FUSE
CONTROLLER CASE
CONTROLLER COVER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL COVER
FAN MOTOR CAPACITOR
TRANSFORMER
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
WIRELESS REMOTE CONTROLLER
WIRELESS REMOTE CONTROLLER
BATTERY COVER
REMOTE CONTROLLER HOLDER
FAN GUARD
REMOTE CONTROLLER DOOR
(BG02L462H02)
(BG25A543H07)
(BG25J821H01)
(BG25J821H02)
(BG25H301H02)
(BG25B573H05)
(BG02A648G01)
(BG02J608H05)
MV
I.B
F1,2<I.B>
TB2
TB4
C
T
RT1
RT2
W.R
W.R
250V 6.3A
3P(L,N,;)
2P(1/2)
2.0+440V
1
1
1
1
1
1
20
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
16
4
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
Q'ty/set
PK-3
FLA3
FLA1
FLA2FLA
R01 Z61 102
R01 KV5 102
—
—
R01 12G 529
R01 12G 223
—
—
—
R01 12G 002
R01 12G 621
R01 12G 063
R01 KV5 527
T7W 573 480
T7W 27K 310
T7W 520 239
—
—
T7W 509 716
T7W 512 716
—
R01 588 255
T7W 51J 799
R01 06A 202
R01 KL5 202
T7W 56J 200
T7W 570 200
R01 58A 050
R01 18G 075
T7W 53J 675
R01 58A 049
