SPLIT-TYPE, AIR CONDITIONERS
TM
L
I
S
T
E
D
CUS
TECHNICAL & SERVICE MANUAL
<Outdoor unit>
Models
PU12EK
No. OC247
REVISED EDITION-E
PU18EK PU18EK
PU24EK PU24EK1 PU24EK2 PU24EK3
PU30EK PU30EK1 PU30EK2 PU30EK3
PU36EK PU36EK1 PU36EK2 PU36EK3
PU42EK2 PU42EK21
PU42EK7 PU42EK71 PU42EK72
Model name
Outdoor unit
Revision:
•Wiring diagram for PU12EK has been modified in
”8. WIRING DIAGRAM”.
•Transformer and outdoor controller board for
PU12EK has been modified in ”13. PARTS LIST”.
indication
1
CONTENTS
1. FEATURES························································2
2. TECHNICAL CHANGE······································3
3.
COMBINATION OF INDOOR AND OUTDOOR UNITS
4. PART NAMES AND FUNCTIONS·····················4
5. SPECIFICATIONS ·············································5
6. DATA ··································································6
7. OUTLINES AND DIMENSIONS ························9
8. WIRING DIAGRAM··········································13
9.
REFRIGERANT SYSTEM DIAGRAM
10. MICROPROCESSOR CONTROL····················19
11. TROUBLESHOOTING·····································21
12. DISASSEMBLY INSTRUCTIONS····················25
13. PARTS LIST·····················································29
···················18
··············4
Note:
•Refer to other manual as for Indoor Units.
•Please void OC247 REVISED EDITION-D.
Rear
Right
Base
Front
Correction:
Model
Page
33
IncorrectRevise point Correct
PU12EK
FUNCTIONAL PARTS
No.12 CAPILLARY
TUBE
FUNCTIONAL PARTS
No.17 TRANSFORMER
FUNCTIONAL PARTS
No.20 OUTDOOR
CONTROLLER BOARD
T7W 588 425 T7W E07 425
T7W 850 799 T7W A30 799
T7W 850 315 T7W E08 315
43
PU42EK7
PU42EK7
1
PU42EK72
FUNCTIONAL PARTS
No.1 FAN MOTOR
T7W A05 763 T7W 853 763
“ 13. PARTS LIST ” has been modified on page 33 and 43.
1
FEATURES
1. REDI-CHARGED REFRIGERANT SYSTEM
The industry’s first redi-charged refrigerant system.
There is no need to adjust the amount of refrigerant to match the piping length
on- site unless lines exceed 100ft.
You will see a major reduction in installation time and labor costs.
2. HIGH RELIABILITY AND EASY SERVICING
In addition to the self-diagnostic function, units are also equipped with a 3-minute time delay mechanism (cooling), an auto
restart function, an emergency operation function, a test run switch, etc., to assure high reliability and easy servicing.
3. FOUR-WAY PIPING ACCESS MAKES
INSTALLATION LAYOUT EASY
Piping on the outdoor unit may be connected from either of
four directions: front, rear, side or beneath the base.
This easy-access design makes it possible to install a
number of units in a compact arrangement at a single site.
The outdoor unit allows for unheard-of flexibility in
determining a piping layout, thus greatly simplifying
installation.
4. FRONT-ACCESS FACILITATES
MAINTENANCE
The outdoor unit has been designed with a front-access
service panel that allows easy access to all maintenance
point, regardless of the installation layout. What’s more, this
front panel may be removed by loosening only two screws.
It all adds up to greatly simplified maintenance work.
2
TECHNICAL CHANGE2
(OC247 REVISED EDITION-A)
Change of the service parts.
Refer to “13. PARTS LIST” for the details.
PU18EK ➔ PU18EK1
PU24EK ➔ PU24EK1
PU30EK ➔ PU30EK1
PU36EK ➔ PU36EK1
PU42EK2 ➔ PU42EK21
1. OUTDOOR CONTROLLER BOARD has been changed.
2. TRANSFORMER has been changed.
PU18EK ➔ PU18EK1
• CONTACTOR has been changed.
(OC247 REVISED EDITION-B)
PU24EK1 ➔ PU24EK2
PU30EK1 ➔ PU30EK2
PU36EK1 ➔ PU36EK2
• COMPRESSOR has been changed.
(PU24EK model) NH33NBD ➔ NH33NBDT
(PU30EK model) NH41NAD ➔ NH41NAHT
(PU36EK model) NH47NAD ➔ NH47NAHT
Refer to “5. SPECIFICATIONS”, “6. DATA” and “13. PARTS LIST” for details.
PU42EK7 ➔ PU42EK71
1. COMPRESSOR CONTACTOR has been changed to the one equipped THERMAL RELAY.
Refer to 8.WIRING DIAGRAM and 13.PARTS LIST for details.
2. OUTDOOR CONTROLLER BOARD has been changed.
Refer to “13. PARTS LIST” for details.
(OC247 REVISED EDITION-D)
PU24EK2 ➔ PU24EK3
PU30EK2 ➔ PU30EK3
PU36EK2 ➔ PU36EK3
PU42EK71 ➔ PU42EK72
• DRAIN PAN has been added.
<‘‘13. PARTS LIST’’ has been changed.>
PU36EK2 ➔ PU36EK3
• COMPRESSOR CAPACITOR for PU36EK, PU36EK1, PU36EK2 and PU36EK3 are unified.
3
3 COMBINATION OF INDOOR AND OUTDOOR UNITS
Indoor unit
Models
Service
manual No.
PL • AK
PL • FK(2)
PC • EK
PK • FL(3)
PC • GK
PK • FK(3)
OC246
OC001
SECOND EDITION
OC003
SECOND EDITION
OC194
OC185A, OC275
OC278
OC121, OC196A
OC274
18 24 30 36 42
PU
Outdoor unit
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
OC001
SECOND EDITION
OC003
SECOND EDITION
OC192
12
EK EK EK
1 EK
EK
1
EK2
EK3
EK
EK
1
EK2
EK3
EK
EK
1
EK2
EK3
EK2
EK7
EK7
1
EK72
EK21
PK • EK
OC001
SECOND EDITION
OC003
SECOND EDITION
PU18EK
PU18EK
1
Outdoor unit
Air intake
Air outlet
Air intake
Air outlet
PU24EK PU30EK
PU24EK
1 PU30EK1
PU24EK2 PU30EK2
PU24EK
3 PU30EK3
Outdoor unit
Air intake
Air outlet
PU36EK PU42EK2 PU42EK7
PU36EK
1 PU42EK21 PU42EK71
PU36EK
2 PU42EK72
PU36EK3
Outdoor unit
PU12EK
Outdoor unit
Air intake
Air outlet
4
PART NAMES AND FUNCTIONS
4
SPECIFICATIONS5
OUTDOOR UNIT MODELS
External finish
Power supply
Max.fuse size (time delay)
Min.ampacity
Fan motor
Compressor
Crankcase heater
Refrigerant control
Sound level
Dimensions
Weight
Control voltage (by built-in transformer)
REFRIGERANT
REFRIGERANT PIPING
Pipe size
Connection
method
Between the indoor
& outdoor units
Model (type)
W
D
H
Name
Charge
Oil<Model>
Liquid
Gas
Indoors
Outdoors
Height difference
Piping length
V, phase, Hz
A
A
F.L.A.
R.L.A.
L.R.A.
A(W
)
dB
in.
in.
in.
lb
OZ
in.
in.
ft
ft
PU12EK
Model
PU12EK
15
11
0.65
RH167NAB
8.9
29
50
25-9/16
105
4 lbs 14 oz
PU18EK
PU18EK
PU18EK
1
0.75
RH247NAB
12.0
37
53
33-1/2
154
5 lbs 8 oz
3/8
5/8
PU24EK
207
9 lbs 15 oz
37<MS32(N-1)>
PU30EK
20
10 lbs 2 oz
Munsell 5Y 7/1
208/230, 1, 60
Capillary tube
55
Indoor unit-outdoor unit:DC12V
R22
Not supplied(optional parts)
Flared
Flared
PU36EK
22
0.75+0.75
0.16/0.17(33/39)
49-9/16
10 lbs 9 oz
Max, 164
Max. 164
Item
Operating range
Indoor intake air temperature
D.B. 95˚F, W.B. 71˚F
D.B. 67˚F, W.B. 57˚F
Outdoor intake air temperature
D.B. 115˚F
D.B. 0˚F w
Cooling
Maximum
Minimum
PU42EK2 PU42EK7
PU42EK2
PU42EK2
1
27
NH569NXA
20.0
105
38-3/16
13-9/16
260
12 lbs 9 oz
49<MS32(N-1)>
PU42EK7
PU42EK71
PU42EK72
28
ZR42K3PFV
20.4
109
220
11 lbs 0 oz
42<SONTEX 200LT>
w In case of the wind baffle installed.
(In case of the wind baffle is not installed, the minimum temperature is D.B. 23˚F)
PU24EK
PU24EK1
NH33NBD
11.5
52
PU24EK2
PU24EK3
NH33NBDT
10.8
57
PU30EK
PU30EK1
NH41NAD
14.0
73
208
PU30EK2
PU30EK3
NH41NAHT
12.9
75
210
PU36EK
PU36EK1
NH47NAD
17.5
87
220
PU36EK2
PU36EK3
NH47NAHT
15.1
81
222
20
16
34-1/4
11-5/8
0.65+0.65
30
40<MS32(N-1)>
40
0.8+0.8
56
0.11/0.12(23/28)
16<MS-56>
Max. 130
Max. 130
1/2
3/4
MODELS : PU12EK PU18EK PU24EK PU30EK PU36EK PU42EK2 PU42EK7
PU18EK1 PU24EK1 PU30EK1 PU36EK1 PU42EK21 PU42EK71
PU24EK2 PU30EK2 PU36EK2 PU42EK72
PU24EK3 PU30EK3 PU36EK3
5
6
PU12EK
PU42EK7
PU42EK7
1
PU42EK72
Piping length (one way)
100 ft 115 ft 130 ft 145 ft 160 ft 164 ft
Factory
charged
Service Ref.
PU24EK
PU24EK
1
PU24EK2
PU24EK3
PU30EK
PU30EK
1
PU30EK2
PU30EK3
PU18EK
PU18EK
1
PU36EK
PU36EK
1
PU36EK2
PU36EK3
PU42EK2
PU42EK2
1
0
0
0
0
0
0
0
2
2
2
5
5
5
5
4
4
4
10
10
10
10
—
—
6
14
14
14
14
—
—
8
19
19
19
19
—
—
9
20
20
20
20
4 lbs 14 oz
5 lbs 8 oz
9 lbs 15 oz
10 lbs 2 oz
10 lbs 9 oz
12 lbs 9 oz
11 lbs 0 oz
Compressor model
Winding
Resistance
( " )
R-C
S-C
RH167NAB NH33NBD
Unit
PU12EK
PU30EK
PU30EK
1
PU24EK
PU24EK1
PU18EK
PU18EK1
NH41NAD
2.47
4.62
RH247NAB
1.59
3.22
0.92
1.93
NH33NBDT
PU24EK
2
PU24EK3
0.92
1.93
NH41NAHT
PU30EK
2
PU30EK3
0.62
1.51
0.63
1.37
at 68°F (Only PU42EK7 PU42EK7
1 : at 77°F)
Compressor model
Winding
Resistance
( " )
R-C
S-C
Unit
ZR42K3PFV
PU36EK
2
PU36EK3
0.54
1.28
0.55
1.24
NH47NAD
PU36EK
PU36EK
1
0.52
1.28
NH47NAHT
PU42EK2
PU42EK2
1
PU42EK7
PU42EK71
PU42EK72
NH569NXA
0.55
1.24
at 68°F(Only PU42EK7 PU42EK7
1 : at 77°F)
DATA
1. ADDITIONAL REFRIGERANT CHARGE (R22 : oz)
2. COMPRESSOR TECHNICAL DATA
6
3. NOISE CRITERION CURVES
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 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PU12EK
50
SPL(dB) LINE
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 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
SPL(dB) LINE
PU24EK PU30EK
PU24EK1 PU30EK1
PU24EK2 PU30EK2
PU24EK3 PU30EK3
55
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 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
PU18EK
PU18EK1
53
SPL(dB) LINE
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
SPL(dB) LINE
PU36EK
PU36EK1
PU36EK2
PU36EK3
55
7
90
80
70
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
SPL(dB) LINE
56
PU42EK2 PU42EK7
PU42EK21 PU42EK71
PU42EK72
3.3ft
3.3ft
MICROPHONE UNIT
GROUND
8
OUTLINES AND DIMENSIONS7
5-7/16
29/32
9/32 11-5/8
1-5/16
13-11/32
3-1/32 20-5/8
1-9/16 20-5/8
11-3/32
11-11/16
17-15/32
25-9/16
34-1/4
11-7/8
2-3/8
2-3/8
4-3/4
2-1/16 1-3/4
4-1/8
15/32
2-9/16
21/32
3-5/32
31/32 max.
R 1/4
R25/32
R25/32
Bottom
piping hole
Front right piping holes - detail Figures
Standard bolt length
2-U-shaped
notched
holes
1-5/16
1-21/32
1-25/32
3-3/4
Handle for moving
Rear fresh
air intake
Outlet guide
installation hole
Terminal bed for indoor and outdoor unit connection
Terminal bed for power line
Refrigerant-pipe flared
connection
5/8
Knock out hole
for front piping
Knock out hole
for front piping
Knock out holes
for power line 1-1/16
15/32 29/32 Oval holes
Drain hole
Drain hole
(standard bolt M10)
(refrigerant, drainage
and wiring)
(refrigerant, drainage
and wiring)
Ground terminal
Handle for moving
Service panel
Handle for
moving
Side air intake
Rear piping hole
Air in
Air in
Air out
7-9/32 7-9/32
14-1/4
1-9/16 1-3/32
11/169/16 13
19-11/16
Refrigerant-pipe flared
connection
3/8
1
Front opening
Service space
(for N.E.C)
1/2
36
36
4
Note:Allow adequate
upper clearance.
1/2
8
1/2
Outdoor Unit - necessary surrounding clearance
40
1/2
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
The upper side must be open.
4
8
For 10 units or less
Outdoor Unit PU12EK
Unit : inch
9
Outdoor Unit PU18EK
Terminal block for indoor and outdoor unit connection
Terminal block for power line
Ground
terminal
Handle for moving
Service panel
Refrigerant pipe
(Flared) 5/8
Knock out hole
for front piping
4-3/4
(refrigerant. drainage
and wiring)
4-1/8
Drain hole
Drain hole
2-U-shaped
notched
holes
1-5/8
1-3/4
1-5/16
Bottom piping hole
2-9/16
3-1/8
R13/16
Front right piping holes-
detail figures
Standard bolt length
1 max.
1/2
1/2x7/8 Oval holes
(standard bolt W3/8(M10)
Knock out hole for
right piping
(refrigerant. drainage
and wiring)
15-7/8
7-1/18 20-5/18
17-3/18
1
2
13-7/4
13-7/8
21-3/4
2-3/820-5/81-9/16
33-1/2
34-1/4
11-7/8
7-9/32 7-9/32
Front opening
Service space
(for N.E.C)
1/2
36
36
4
Note:Allow adequate
upper clearance.
1/2
8
1/2
1-9/161-1/16
13
14-1/4
11/169/16
19-11/16
Refrigerant pipe
(Flared) 3/8
Outlet guide
installation hole
1
40
1/2
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
The upper side must be open.
4
8
For 10 units or less
11-5/8
Side air intake
Handle for
moving
Rear fresh
air intake
Rear piping hole
Handle for moving
3-3/4
5-7/16
2-3/8
Knock out holes for
power line 1-1/16
1-3/4
2-1/16
Air intake
Air intake
Air outlet
11/16
R1/4
R13/16
1/4
Outdoor Unit - necessary surrounding clearance
PU18EK1
Unit : inch
10
Outdoor Unit PU24EK PU30EK
Terminal block for
indoor and outdoor
unit connection
Terminal block for power line
Ground
terminal
Handle
for moving
Service panel
Refrigerant pipe (Flared)
PU24EK [5/8
PU30EK [3/4
Knock out hole
for front piping
4-3/4
(refrigerant. drainage
and wiring)
4-1/8
Drain hole
Drain hole
2-U-shaped
notched
holes
2-1/16
2-1/4
1-9/16
Bottom
piping hole
2-9/16
3-1/8
R13/16
Front right piping holes-
detail figures
Standard bolt length
1 max.
1/2
2-1/2x7/8 Oval holes
(standard bolt M10)W3/8(M10)
Knock out hole
for right piping
(refrigerant.
drainage and wiring)
3-1/4
20-5/8 20-5/82-3/8
13-9/16 23-1/16
1
2
15-1/16
37-34
2-3/820-5/81-9/16
49-9/16
34-1/4
11-7/8
7-9/32 7-9/32
Front opening
Service space
(for N.E.C)
3/8
36
36
4
Note:Allow adequate
upper clearance.
Outdoor Unit - necessary surrounding clearance
1/2
12
1/2
1-9/161-1/16
13
14-1/4
11/169/16
19-11/16
Refrigerant pipe (Flared)
PU24EK [3/8
PU30EK [1/2
Outlet guide
installation hole
1
40
1/2
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
The upper side must be open.
6
12
For 10 units or less
11-5/81/4
Side air intake
Handle
for moving
Rear fresh
air intake
Rear piping hole
Handle for moving
3-3/4
5-7/16
2-3/8
Knock out holes for
power line 1-1/16
1-3/4
2-1/16
Air intake
Air intake
Air outlet
11/16
R1/4
R13/16
15-7/8
PU24EK1 PU30EK1
PU24EK2 PU30EK2
PU24EK3 PU30EK3
Unit : inch
11
Terminal block for
indoor and outdoor
unit connection
Terminal block for power line
Ground
terminal
Handle
for moving
Service panel
Refrigerant pipe (Flared)
[3/4
Knock out hole
for front piping
4-3/4
(refrigerant. drainage
and wiring)
4-1/8
Drain hole
Drain hole
2-U-shaped
notched
holes
2-1/16
2-1/4
1-9/16
Bottom
piping hole
2-9/16
3-1/8
R13/16
Front right piping holes-
detail figures
Standard bolt length
1 max.
1/2
2-1/2x7/8 Oval holes
(standard bolt W3/8(M10)
Knock out hole
for right piping
(refrigerant.
drainage and wiring)
3-1/4
20-5/8 20-5/82-3/8
13-9/16 23-1/16
7/8
1-5/16
15-1/16
37-3/4
2-3/820-5/81-9/16
49-9/16
38-3/16
13-7/8
7-9/32 7-9/32
Front opening
Service space
(for N.E.C)
1/2
36
36
6
Note:Allow adequate
upper clearance.
Outdoor Unit - necessary surrounding clearance
1/2
12
1/2
1-9/16 1-1/16
14-31/32
16-1/4
11/169/16
23-5/8
Refrigerant pipe Flared)
[1/2
Outlet guide
installation hole
1
40
1/2
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
The upper side must be open.
6
12
For 10 units or less
13-9/161/4
Side air intake
Handle
for moving
Rear fresh
air intake
Rear piping hole
Handle for moving
3-3/4
5-7/16
2-3/8
Knock out holes for
power line 1-1/16
1-3/4
2-1/16
Air intake
Air intake
Air outlet
11/16
R1/4
R13/16
15-7/8
Outdoor UnitPU36EK PU42EK2 PU42EK7
PU36EK1 PU42EK21 PU42EK71
PU36EK2 PU42EK72
PU36EK3
Unit : inch
12
WIRING DIAGRAM8
White connector
When power Supply is 208V
RED WHITE208V
ORANGE 230V
MODEL : PU12EK PU18EK 1
SYMBOL
C
COMPRESSOR CAPACITOR
NAME
C3 FAN CAPACITOR
CH CRANKCASE HEATER
CN3<O. B>
CONNECTING WIRES INDOOR/OUTDOOR
CONNECTOR
CN4T<O. B> TRANSFORMER CONNECTOR
FROM INDOOR UNIT
CONNECTING WIRES
12V DC (polar)
POWER SUPPLY
208/230V
1phase 60Hz
1
2
TB3
TB1
L1
L2
GR
YLW
ORN
BRN AC12.3V
RED
AC12.3V
GRN
SYMBOL
LD1 ~ LD8
LED <CHECK, SERVICE>
NAME
MC COMPRESSOR
MF
OUTDOOR FAN MOTOR (INNER THERMOSTAT)
O. B OUTDOOR CONTROLLER BOARD
SW1, 2, 3<O. B>
SELECT SWITCH <CHECK, SERVICE>
T TRANSFORMER
FC <O. B> FAN CONTROLLER
F <O. B> FUSE <6A>
LED
TH3
O.B
SW1
SW2
LD1
LD2
LD3
LD4
LD5
1
CN3
OFF
ON
CN4T
RED
WHT
208V
230V
LD6
1
234
4
SW3
2
2
1
RED
ORN
T
LD7
WHT
WHT
LD8
CN2
TRF 52C
X12
X11
GRY
GRY
S
A
52C
B
CN4
X12 X11
CH
WHT
WHT
CH
1234
ZNR
52C
R
RED
WHT
U
T
W
63HI
R/1FS/2 T/3
BLU
BLU
BLU
51C
WHT
BLU
C
SYMBOL
TH3
OUTDOOR COIL THERMISTOR
NAME
X11 <O. B> CRANKCASE HEATER RELAY
X12 <O. B> COMPRESSOR RELAY
ZNR <O. B> VARISTOR
52C CONTACTOR
63H2 HIGH PRESSURE SWITCH <PROTECT>
TB1 POWER SUPPLYTERMINAL BLOCK
TB3
CONNECTING WIRES INDOOR/OUTDOOR
TERMINAL BLOCK
51C OVERCURRENT RELAY
FC
5
YLM
YLM
YLM
12
C
WHT
RED
26C
63H2
MF1
51CM
YLM
RED
RED
BLU
BLU
WHT
63H2
R
MC
S
RED
C3MF
ORN
Main functions of LED (when both No. 1 and 2 of
SW3
€
are ¨OFF¨)
LED NO. Output display (light) Check display (flush)
LD1 Compressor indoor command —
LD2 — —
LD3 — TH3 short / open
LD4 Compressor ON 63H2 functions
LD5 Outdoor fan ON —
LD6 — —
LD7 — TH3 overheat protection
LD8 Crankcase heater ON Defective input
NOTES :If the operation stops to function of the protection device, the check display flashes.
How to use SW1 and 2
● Pressing
computer.
● The output display (light) remains during operation but pressing
SW1
€
erases the past check contents loaded on the micro-
SW2
€
displays the past check contents in flashing mode. Pressing the
switch again returns to output display (light).
CAUTION FOR SERVICING
● The connector marked s— ⁄
The compressor stops by disconnecting the white connector as shown at the right.
— is to turn the compressor ON-OFF during servicing.
ı
CAUTION FOR POWER SUPPLYWIRING
● Since LD8 lights when normal power is turned "ON", check the power supply with
the "ON" or "OFF" LD8.
❈ Since the indoor transformer (T) is connected with 230V power, if 208V power is
used, change the wiring connection in the following Procedure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
● Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1, 2) for indoor and outdoor units.
13
MODELS : PU18EK
White connector
When power Supply is 208V
RED WHITE208V
ORANGE 230V
SYMBOL
C
COMPRESSOR CAPACITOR
C3 FAN CAPACITOR
CH CRANKCASE HEATER
CN3<O. B>
CONNECTING WIRES INDOOR/OUTDOOR
CONNECTOR
CN6T<O. B> TRANSFORMER CONNECTOR
NAME
SYMBOL
LD1 ~ LD8
LED <CHECK, SERVICE>
NAME
MC COMPRESSOR
MF3
OUTDOOR FAN MOTOR (INNER THERMOSTAT)
O. B OUTDOOR CONTROLLER BOARD
SW1, 2, 3<O. B>
SELECT SWITCH <CHECK, SERVICE>
T TRANSFORMER
FC <O. B> FAN CONTROLLER
F3 <O. B> FUSE <6A>
SYMBOL
TH3
OUTDOOR COIL THERMISTOR
NAME
X11 <O. B> CRANKCASE HEATER RELAY
X12 <O. B> COMPRESSOR RELAY
ZNR <O. B> VARISTOR
52C CONTACTOR
63H2 HIGH PRESSURE SWITCH <PROTECT>
TB1 POWER SUPPLYTERMINAL BLOCK
TB3
CONNECTING WIRES INDOOR/OUTDOOR
TERMINAL BLOCK
51C OVERCURRENT RELAY
OFF
ON
234
1
208V
230V
LED
LD8
LD7
LD6
LD5
LD4
LD3
LD2
LD1
4
WHT
WHT
are ¨OFF¨)
X12
X11
TRF 52C
GRY
GRY
52C
TH3
X12 X11
WHT
S
A
B
R
T
WHT
52C
CN2
5
ZNR
CH
CH
U
W
R/1F3S/2 T/3
BLU
BLU
BLU
51C
WHT
BLU
C
YLM
YLM
12
WHT
RED
FC
26C
63H2
51CM
YLM
YLM
RED
RED
BLU
BLU
63H2
R
C
MC
S
1
FROM INDOOR UNIT
CONNECTING WIRES
12V DC (polar)
POWER SUPPLY
208/230V
1phase 60Hz
YLW
2
ORN
TB3
BRN 11.5V AC
RED
ORN 36.0V AC
TB1
L1
L2
GR
O.B
15.5V AC
T
GRN
Main functions of LED (when both No. 1 and 2 of
SW1
SW2
SW3
2
2
1
RED
ORN
1
CN3
CN6T
56
€
RED
WHT
RED
WHT
SW3
LED NO. Output display (light) Check display (flush)
LD1 Compressor indoor command —
LD2 — —
LD3 —
Pipe temperature sensor
short / open
LD4 Compressor ON 63H2 functions
LD5 Outdoor fan ON —
LD6 — —
LD7 — TH3 overheat protection
LD8 Crankcase heater ON Defective input
NOTES :If the operation stops to function of the protection device, the check display flashes.
How to use SW1 and 2
● Pressing
computer.
● The output display (light) remains during operation but pressing
SW1
€
erases the past check contents loaded on the micro-
SW2
€
displays the past check contents in flashing mode. Pressing the
switch again returns to output display (light).
CAUTION FOR SERVICING
● The connector marked s— ⁄
The compressor stops by disconnecting the white connector as shown at the right.
— is to turn the compressor ON-OFF during servicing.
ı
CAUTION FOR POWER SUPPLYWIRING
● Since LD8 lights when normal power is turned "ON", check the power supply with
the "ON" or "OFF" LD8.
❈ Since the indoor transformer (T) is connected with 230V power, if 208V power is
used, change the wiring connection in the following Procedure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
● Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1, 2) for indoor and outdoor units.
14
WHT
MF3
MF3
RED
ORN
C3
MODELS : PU24EK PU30EK PU36EK PU42EK2
White connector
When power Supply is 208V
RED WHITE208V
ORANGE 230V
SYMBOL
C
COMPRESSOR CAPACITOR
C3, 4 FAN CAPACITOR
CH CRANKCASE HEATER
CN3<O. B>
CONNECTING WIRES INDOOR/OUTDOOR
CONNECTOR
CN6T<O. B> TRANSFORMER CONNECTOR
FC <O. B> FAN CONTROLLER
F3<O. B> FUSE <6A>
FROM INDOOR UNIT
CONNECTING WIRES
12V DC (polar)
POWER SUPPLY
208/230V
1phase 60Hz
Main functions of LED (when both No. 1 and 2 of
LED NO. Output display (light) Check display (flush)
LD1 Compressor indoor command —
LD2 — —
LD3 — TH3 short / open
L1
L2
GR
NAME
1
2
TB3
TB1
YLW
ORN
BRN 11.5V AC
RED
ORN 36.0V AC
15.5V AC
GRN
SYMBOL
LD1~LD8
LED <CHECK, SERVICE>
NAME
MC COMPRESSOR (INNER THERMOSTAT)
MF3, 4
OUTDOOR FAN MOTOR (INNER THERMOSTAT)
O. B OUTDOOR CONTROLLER BOARD
SW1, 2, 3<O. B>TSELECT SWITCH <CHECK, SERVICE>
TRANSFORMER
TB1 POWER SUPPLYTERMINAL BLOCK
TB3
CONNECTING WIRES INDOOR/OUTDOOR
TERMINAL BLOCK
LED
TH3
O.B
1
CN3
CN6T
RED
WHT
OFF
ON
208V
230V
LD8
LD7
LD6
LD5
LD4
LD3
LD2
LD1
1
234
4
X12
TRF 52C
GRY
WHT
WHT
GRY
52C
X11
S
A
B
CN2
X12 X11
CH
WHT
WHT
SW1
SW2
SW3
2
2
1
56
RED
ORN
T
52C
RED
WHT
SW3
€
are ¨OFF¨)
R
T
ZNR
CH
U
W
R/1F3S/2 T/3
BLU
BLU
BLU
WHT
BLU
C
R
SYMBOL
TH3
OUTDOOR COIL THERMISTOR
NAME
X11 <O. B> CRANKCASE HEATER RELAY
X12 <O. B> COMPRESSOR RELAY
ZNR <O. B> VARISTOR
52C
63H2
CONTACTOR
HIGH PRESSURE SWITCH <PROTECT>
R RESISTOR
C5 COMPRESSOR START CAPACITOR
19 COMPRESSOR START RELAY
FC
5
YLM
YLM
YLM
YLM
RED
RED
63H2
26C
63H2
51CM
MF4
MF3
BLU
BLU
WHT
BLU
WHT
MF3
MF4
R
C
MC
RED
S
PU42EK2
52C
U
W
T
BLU
R
C5
BLU
WHT
WHT
BLU
only
19
19
3
BLU
R
C
C
1
2
RED
S
RED
LD4 Compressor ON 63H2 functions
LD5 Outdoor fan ON —
LD6 — —
LD7 — TH3 overheat protection
LD8 Crankcase heater ON Defective input
NOTES :If the operation stops to function of the protection device, the check display flashes.
How to use SW1 and 2
● Pressing
computer.
● The output display (light) remains during operation but pressing
SW1
€
erases the past check contents loaded on the micro-
SW2
€
displays the past check contents in flashing mode. Pressing the
switch again returns to output display (light).
CAUTION FOR SERVICING
● The connector marked s— ⁄
The compressor stops by disconnecting the white connector as shown at the right.
— is to turn the compressor ON-OFF during servicing.
ı
CAUTIONS FOR POWER SUPPLYWIRING
● Since LD8 lights when normal power is turned "ON", check the power supply with
the "ON" or "OFF" LD8.
❈ Since the indoor transformer (T) is connected with 230V power, if 208V power is
used, change the wiring connection in the following Procedure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
● Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1, 2) for indoor and outdoor units.
15
RED
C3
ORN
BRN
C4
YLW
MC
MODELS : PU24EK1 PU30EK1 PU36EK1 PU42EK21 PU42EK7
White connector
When power Supply is 208V
RED WHITE208V
ORANGE 230V
PU24EK2 PU30EK2 PU36EK2
PU24EK3 PU30EK3 PU36EK3
SYMBOL
C
COMPRESSOR CAPACITOR
C3, 4 FAN CAPACITOR
CH CRANKCASE HEATER
CN3<O. B>
CONNECTING WIRES INDOOR/OUTDOOR
CONNECTOR
CN4T<O. B> TRANSFORMER CONNECTOR
FC <O. B> FAN CONTROLLER
F <O. B> FUSE <6A>
FROM INDOOR UNIT
CONNECTING WIRES
12V DC (polar)
POWER SUPPLY
208/230V
1phase 60Hz
Main functions of LED (when both No. 1 and 2 of
LED NO. Output display (light) Check display (flush)
LD1 Compressor indoor command —
LD2 — —
LD3 — TH3 short / open
LD4 Compressor ON 63H2 functions
LD5 Outdoor fan ON —
LD6 — 26C functions (PU42EK7)
LD7 — TH3 overheat protection
LD8 Crankcase heater ON Defective input
NOTES :If the operation stops to function of the protection device, the check display flashes.
How to use SW1 and 2
● Pressing
computer.
● The output display (light) remains during operation but pressing
SW1
€
erases the past check contents loaded on the micro-
displays the past check contents in flashing mode. Pressing the
switch again returns to output display (light).
CAUTION FOR SERVICING
● The connector marked s— ⁄
The compressor stops by disconnecting the white connector as shown at the right.
CAUTIONS FOR POWER SUPPLYWIRING
● Since LD8 lights when normal power is turned "ON", check the power supply with
the "ON" or "OFF" LD8.
❈ Since the indoor transformer (T) is connected with 230V power, if 208V power is
used, change the wiring connection in the following Procedure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
● Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1, 2) for indoor and outdoor units.
NAME
SYMBOL
LD1~LD8
LED <CHECK, SERVICE>
MC COMPRESSOR (INNER THERMOSTAT)
MF1, 2
OUTDOOR FAN MOTOR (INNER THERMOSTAT)
O. B OUTDOOR CONTROLLER BOARD
SW1, 2, 3<O. B>TSELECT SWITCH <CHECK, SERVICE>
TRANSFORMER
TB1 POWER SUPPLYTERMINAL BLOCK
TB3
1
YLW
2
ORN
TB3
BRN AC12.3V
RED
TB1
L1
L2
GR
— is to turn the compressor ON-OFF during servicing.
ı
AC12.3V
GRN
O.B
T
SW1
SW2
SW3
2
2
1
RED
ORN
1
CN3
SW3
LD1
OFF
ON
CN4T
RED
WHT
RED
WHT
€
208V
230V
LD2
LD3
1
234
are ¨OFF¨)
CONNECTING WIRES INDOOR/OUTDOOR
TERMINAL BLOCK
LED
TH3
X12
TRF 52C
GRY
€
GRY
52C
X11
S
CN2
LD4
LD5
LD6
LD7
LD8
4
WHT
WHT
SW2
X12 X12
WHT
WHT
A
B
52C
R
T
16
NAME
CN4
CH
CH
1234
ZNR
U
W
63HI
R/1FS/2 T/3
BLU
BLU
BLU
WHT
BLU
C
SYMBOL
TH3
OUTDOOR COIL THERMISTOR
X11 <O. B> CRANKCASE HEATER RELAY
X12 <O. B> COMPRESSOR RELAY
ZNR <O. B> VARISTOR
52C
63H2
CONTACTOR
HIGH PRESSURE SWITCH <PROTECT>
R RESISTOR
C5 COMPRESSOR START CAPACITOR
19
26C
COMPRESSOR STARTRELAY
DISCHARGE THERMAL SWITCH
FC
5
YLW
YLW
YLW
YLW
RED
RED
63H2
26C
63H2
51CM
BLU
BLU
PU42EK7 Only
26C
R
C
MC
RED
S
52C
R
W
T
PU42EK2
BLU
U
WHT
WHT
R
BLU
BLU
C5
WHT
NAME
MF2
MF1
BLU
WHT
RED
C3MF1
ORN
BRN
C4MF2
YLW
1 Only
1
19
19
2
3
RED
BLU
C
RED
R
C
MC
S
MODEL : PU42EK71 PU42EK72
51C functions
(32°F/15kΩ,77°F/5.4kΩ)
WHT
WHT
CN2
26C functions
26C
SYMBOL
CN3<O.B>
CN4T<O.B>
CH
C3, 4
C
FC<O.B>
F<O.B>
NAME SYMBOL NAME SYMBOL NAME
CONNECTOR
(CONNECTING WIRES INDOOR/OUTDOOR)
CONNECTOR(TRANSFORMER)
CRANKCASE HEATER
RUN CAPACITOR FOR MF1,2
RUN CAPACITOR FOR MC
FAN CONTROLLER
FUSE(6A/250V)
LD1~LD8
MC
MF1, 2
O.B
SW1·2·3<O.B>
T
TB1
TB3
LED(CHECK, SERVICE)
COMPRESSOR MOTOR (INNER THERMOSTAT)
FAN MOTOR (INNER THERMOSTAT)
OUTD00R CONTROLLER BOARD
SELECT SWITCH(CHECK,SERVICE)
TRANSFORMER
TERMINAL BLOCK(POWER SUPPLY)
TERMINAL BLOCK
(CONNECTING WIRES INDOOR/OUTDOOR)
TH3
X11<O.B>
X12<O.B>
ZNR<O.B>
51C
52C
63H2
26C
THERMISTOR FOR PIPE TEMPERATURE
AUXILIARY RELAY FOR CH
AUXILIARY RELAY FOR MC
VARISTOR
THERMAL RELAY
MAGNETIC CONTACTOR FOR MC
HIGH PRESSURE SWITCH(PROTECT)
DISCHARGE THERMAL SWITCH
LED NO.
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
Output display(light)
Compressor indoor command
Compressor ON
Outdoor fan ON
Crankcase heater ON
Check display(flush)
Pipe temperature sensor short/open
63H2 functions
TH3 overheat protection
Defective input
NOTE: If the operation stops to function of the protection device, the check display flushes.
CAUTION FOR SERVICING
The connector marked for 52C is to turn the compressor ON-OFF during servicing.
The compressor stops by disconnecting the white connector as shown at the right.
CAUTIONS FOR POWER SUPPLY WIRING
Since LD8 lights when normal power is turned"ON", check the power supply with the"ON"or"OFF"LD8.
Since the indoor transformer(T) is connected with 230V power, if 208V power is used, change the
wiring connection as shown at the right.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers(1,2)for indoor and outdoor units.
How to use SW1 and 2
Main functions of LED
(When both No.1 and 2 of SW3 are"OFF")
Pressing SW1 erases the past check contents
loaded on the microcomputer.
The output display (light) remains during operation
but pressing SW2 displays the past check contents
in flushing mode. Pressing the switch again returns
to output display(light).
S
White connector
w
When Power Supply is 208V
208V
RED WHITE
230V
ORANGE
TO INDOOR UNIT
CONNECTING WIRES
DC 12V (polar)
POWER SUPPLY
208/230V
1 phase 60Hz
TB1
L1
L2
GR
GRN
RED
WHT
RED
WHT
WHT
WHT
MC
MF1
MF2
RED
ORN
BRN
YLW
C3
C4
1234
CN4T
4
TRF 52C CH
ZNR
S/2R/1 T/3
2
1
CN3
TB3
1
2
ORN
YLW
O.B
X12 X11
X12 X11
SW2
SW1
SW3
OFF
ON
21
F
FC
5
51CM
63H2
26C
52C
CH
A1
A2
S
63H2
GRY
GRY
WHT
WHT
BLU BLU
RED
BLU
BLU
WHT
BLU
WHT
RED
LED
CN4
63H163H163H163H1
T
RED AC12.3V
BRN AC12.3V
RED
ORN
230V
208V
MF2
4321
LD7
LD1
LD2
LD3
LD4
LD5
LD8
LD6
MF1
TH3
96
95
51C
YLW
YLW
51C
C
BLU
WHT
BLU
2/T1
4/T2
6/T3
RED
5/L3
3/L2
1/L1
52C
RED
S
R
C
w
17
9
Outdoor unit
Refrigerant pipe
(Option)
5/8
(with heat insulator)
Outdoor
heat
exchanger
Refrigerant pipe
(Option)
3/8
(with heat insulator)
Flexible tube
Flared connection
Ball valve
Fusible
plug
High
Pressure
Switch
Outdoor coil
thermistor
TH3
Ball valve
Flow of refrigerant
(with service port)
Flared connection
Accumulator
Compressor
Charge
plug
Check
plug
Strainer
Capillary tube
For PU12EK ({0.126✕{0.071✕ 31.5)
Capillary tube size (O.D.✕ I.D.✕ Length)
For PU24EK, PU24EK
1, PU24EK2, PU24EK3({0.126✕{0.063✕ 17.3) ✕ 2 sets
For PU18EK, PU18EK
1({0.126✕{0.063✕ 31.5) ✕ 2 sets
Outdoor unit
Refrigerant pipe
(Option)
3/4
(with heat insulator)
Outdoor
heat
exchanger
Refrigerant pipe
(Option)
1/2
(with heat insulator)
Flexible tube
Flared connection
Ball valve
Fusible
plug
High
Pressure
Switch
Outdoor coil
thermistor
TH3
Ball valve
Flow of refrigerant
(with service port)
Flared connection
Accumulator
Compressor
Charge
plug
Check
plug
Strainer
Capillary tube
For PU30EK, PU30EK1, PU30EK2, PU30EK3 ({0.157✕{0.079✕ 29.1) ✕ 2 sets
Capillary tube size (O.D.✕ I.D.✕ Length)
NOTE :The symbol indicates the diameter.
For PU36EK, PU36EK1, PU36EK2, PU36EK3 ({0.157✕{0.079✕ 17.7) ✕ 2 sets
For PU42EK2, PU42EK2
1({0.157✕{0.079✕ 7.1) ✕ 2 sets
For PU42EK7, PU42EK7
1, PU42EK72({0.157✕{0.079✕ 21.7) ✕ 2 sets
REFRIGERANT SYSTEM DIAGRAM
PU12EK PU18EK PU24EK
PU18EK1 PU24EK1
PU24EK2
PU24EK3
PU30EK PU36EK PU42EK2 PU42EK7
PU30EK1 PU36EK1 PU42EK21 PU42EK71
PU30EK2 PU36EK2 PU42EK72
PU30EK3 PU36EK3
18
10
MICROPROCESSOR CONTROL
OUTDOOR MICROPROCESSOR CONTROL
1. Protection function
(1) As soon as a reversed phase, an open phase, or a P. C. board trouble is sensed, the operation stops and the check
code is displayed by LED on the outdoor controller board.
(2) When a protection function such as high pressure switch and overcurrent relay works for the first time, the operation
stops and restarts after 3-minute time delay mode. When the second protection function works, the operation stops
and the check code is displayed by LED. This condition continues until the outdoor unit receives OFF command from
the indoor controller board. Check code indication continues until the outdoor unit receives the ON command from
the indoor controller board.
(3) The second protection function is not necessary to be the same as the first one. The content of the second protection
function is loaded in the memory, which is cleared when SW1 turns to ON or the next check mode starts.
2. Control by outdoor coil thermistor
(1) Unit control
Outdoor coil temperature range for control is from -40˚F to 194˚F. When reading 194˚F or above, the outdoor coil
thermistor is regarded as short-circuit. When reading -40˚F or below, the outdoor coil thermistor is regarded as
open-circuit. An open circuit is not sensed for the first 7 min. after the compressor start up, but is sensed during
defrosting operation or for the first 10 seconds after the compressor start-up.
(2) Target temperature of outdoor coil temperature
Fan rotational frequency is controlled so that the outdoor coil temperature keeps 95˚F ± 4˚F.
3. Unit operation control
The compressor receives signal from the indoor unit and make the outdoor unit start or stop.
4. Fan control
Fan rotational frequency is phase-controlled so that the outdoor coil temperature reaches the target temperature.
This control enables cooling operation even if the outdoor temperature is low. Fan rotational frequency is adjusted by fan
output. Fan output is divided into 256 steps from 0 to 255 and is controlled every 30 seconds.
(1) Initial setting
A. When power is turned to on, or when the compressor restarts after interval of 30 minutes or more :
● If the outdoor coil thermistor reads 46˚F or below, the fan output step becomes 100.
● If the outdoor coil thermistor reads above 46˚F, the fan output step becomes 200.
B. When the compressor restarts within 30 minutes after stop, the fan output step is the same as the fan output before
the compressor stops.
C. When the operation mode is changed within 30 minutes after the compressor stop, the fan output step becomes 100.
D. When the operation mode is changed after the compressor interval of more than 30 minutes, the fan output step is
the same as described in A.
(2) For the first 2 minutes after the compressor start-up, the fan operates at the initial setting output, and then every other
30 seconds, the fan output is adjusted depending on the difference between the outdoor coil temperature and the
target temperature. But as soon as the outdoor coil temperature becomes 122˚F or above, the fan output step becomes 255.
(3) When the outdoor coil thermistor reads 122˚F or above, the fan output step becomes 255.
(4) When the high pressure switch (63H1) functions, the fan output step becomes 255. After that, when the switch returns,
the fan control returns to the normal control.
5. Crankcase heater control
(1) With jumper wire J3
The crankcase heater is ON from the power is turned to on till the compressor starts, and turns to ON 1 hour after the
compressor stop.
(2) Without jumper wire J3
The crankcase heater is ON from the power is turned to on till the compressor starts, and repeats ON/OFF on a 1-hour
schedule.
19
6. Fixed fan-output
Jumper wire
J1
J2
J3
J4
Function
Reversed phase sensor
Not applied for series PU
Crankcase heater control
Target temperature of outdoor
coil temperature
With jumper wire
Sensed
Refer to 5 (1) on page 19.
86˚F
For heat pump units
Without jumper wire
Not sensed
Refer to 5 (2) on page 19.
95˚F
For cooling unit
While the compressor is operating and the fan output step is indicated by LED, pushing SW2 fixes the fan output of that time.
The fixed fan-output can be released when either of the following conditions is satisfied.
1 SW2 is pushed again.
2 SW3 setting is changed.
3 The compressor stops.
7. Function of switches on the outdoor controller board
SW1 : Clears the check code memory (push-button switch)
SW2 : Switches the output state indication and the check code display (push-button switch)
SW3-1and3- 2 : Switches the output state indication items (dip-switch)
For further information, please refer to page 21.
8. Operation during the power-on-reset state
(1) When the circuit breaker is turned to ON, the microprocessor enters the power-on-reset state, which continues until the
direct current for the microprocessor control reaches 12V.
Then the microprocessor starts operation in the following order.
1 Each I/O port clearance
2 Function input
Function depends on jumper wires set beforehand in the factory.
3 Check for a reversed phase
4 Check for an open phase (with J1)
5 50/60Hz judgment
6 EEPROM data loading (check mode, and total time of compressor operation)
7 Coil temperature initial input
(2) If an open phase or a reversed phase is sensed, LED blinks every other second.
NOTE
❈ If power is not supplied to the transformer and the microprocessor, the microprocessor does not work and can sense nei-
ther a reversed phase nor an open phase.
❈ If a contact point of protective device such as the high pressure switch has already been opened in the power-on-reset
state, it is regarded as an open phase.
In this case, all LED are OFF.
9. 100% fan output
Fan output is fixed to 255 (100%) by shorting CN22. However, the fan stops during compressor OFF or defrosting operation.
Open circuit of CN22 enables the fan control to start.
10. Time shortening
Short circuit of CN21 shortens the time listed below.
1) Fan control period : 30 sec. ➝ 3 sec.
2) Three-minute time delay function : 3 min. ➝ 3 sec.
3) Compressor ON/OFF time for bypass valve ON/OFF : 30 min. ➝ 30 sec.
4) Compressor ON time to start other functions : x min. ➝ x sec.
20
TROUBLESHOOTING11
SW3-1
SW3-2
OFF
OFF
Check code Output state
Outdoor coil
temperature
(
bit
)
Fan output
step
(
bit
)
Total time of
compressor
operation(Hr
)
OFF
OFF
OFF
ON
ON
OFF
ON
ON
LED
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
Blinking
Reversed phase
Open phase
63H2 function
51C function
26C function
Overheat protection
During 63H1 function
Compressor ON
Outdoor fan ON
4-way valve ON (HEAT PUMP Only)
Bypass valve ON (HEAT PUMP Only)
Crankcase heater ON
Lighting
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
Outdoor coil thermistor
is abnomal.
Heating operation command from
indoor controller
Compressor ON command from
indoor controller
Input circuit on controller
board is abnormal
1. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD
Setting dip switches SW2 and SW3 on the outdoor controller board enables LED to show the output state and check code.
Output state is shown by LED lighting, and check code by blinking.
SW1 : Turning SW1 ON clears the check code. If SW1 is turned ON while the check code is blinking , the indication
changes to output state indication.
NOTE : SW1 is usually available independent of SW3 setting. As an exception, when the check code shows a
reversed phase or an open phase during the power-on-reset state, SW1 is not available.
SW2 : SW2 is turned ON by pressing, and OFF by releasing.
When SW3-1 and SW3-2 are OFF, pressing SW2 changes indication between output state and check code
alternately.
When SW2 is turned On with SW3-1 OFF and SW3-2 ON, the compulsory defrosting starts.
SW3 : Output state indication items depend on the combination of SW3-1 ON/OFF and SW3-2 ON/OFF.
Changed alternately by pressing SW2.
21
1-1 Outdoor coil temperature
50
Fan output step (bit)
Fan rotational frequency (rpm)
100 150 200 250
800
600
400
200
0
50
Fan output step (bit)
Fan rotational frequency (rpm)
100 150 200 250
800
600
400
200
0
212
˚F
Temperature
176
140
104
68
32
0
Number of bits
50 100 150 200 255
-4
-40
(Short 38 bits)
(Open 219 bits)
To obtain data on the outdoor coil temperature,
add the number of bits of lighting LEDs, and
see the graph to find the temperature.
1-2 Fan output step
To obtain data on the fan output step, add the number of bits of lighting LEDs, and see the graph below to find the fan
rotational frequency.
1 PU12EK PU24EK PU30EK
PU24EK1 PU30EK1
PU24EK2 PU30EK2
PU24EK3 PU30EK3
2 PU18EK PU36EK PU42EK2 PU42EK7
PU18EK1 PU36EK1 PU42EK21 PU42EK71
PU36EK2 PU42EK72
PU36EK3
1-3 Total time of compressor operation
Compressor operation time is indicated in 256 hour units. To obtain the compressor operation time, add the hours of lighting LEDs. During the compressor operation time indication, SW2 is not available.
1-4 Check code indication
● When a protection function works for the first time during operation, the operation stops and restarts after the 3-minutes
time delay mode. When the protection function works again, the operation stops. (Check mode) When both SW3-1 and
SW3-2 are OFF, the check code is indicated.
● If the outdoor controller board receives the compressor ON command from the indoor controller board during check
mode the indication changes to output state indication.
● By pressing SW2 during normal operation. operation will continue.
● The latest check code is indicated.
22
2. TROUBLESHOOTING ACCORDING TO CHECK CODE
Blinking
LED
LD1
LD2
LD3
LD4
LD5
LD6
Diagnosis of malfunction Cause Check point
Reversed phase This model does not have this
function.
Open phase This model does not have this
function.
Outdoor coil thermistor is
abnormal. (Open circuit or short
circuit)
High pressure switch (63H2)
function
Thermal relay function
(PU42EK7)
Thermal switch (26C) function
(PU42EK7)
(PU42EK7
1)
● Outdoor coil thermistor is
broken.
● Thermistor was connected
incorrectly.
● 63H2 was badly connected.
● 63H2 was working.
● 51C is working. ● Check 51C.
● 26C was connected incorrectly.
● 26C is working.
No need to be checked.
No need to be checked.
● Measure the resistance of the thermistor.
● Check the thermistor. If normal, replace the out-
● Check 63H2 and the outdoor fan motor.
● Check if refrigerant supply is low.
● Check if air cycle is short-cycled.
● Check 26C.
● Check if refrigerant supply is low.
● Check if the capillary tube is clogged.
door controller board.
LD7
Over heat protection ● The thermistor is broken.
LD8
Input circuit of outdoor controller board is abnormal.
● Coil temperature is over
153˚F.
● Pulse input is abnormal. ● Replace the outdoor controller board.
3. WHEN OUTDOOR UNIT DOES NOT WORK
Cause
1) Indoor/outdoor connecting wires are poorly connected.
(Refer to next page.)
2) Power supply is poorly connected.
3) Connector or transformer is broken.
4) Fuse (6A) in the outdoor controller board is blown.
● Measure the resistance of the thermistor.
● Check the outdoor fan motor.
● Check if air cycle is short-cycled.
Check points
1) Check the connecting wires.
2) Check the power supply.
3) Check connector and transformers.
4) Check the fuse.
23
4. WRONG WIRING ON SITE
Outdoor unitIndoor unit
1
2
1
2
Parts name Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 50°F~86°F)
Measure the resistance between the terminals using a tester.
CRANKCASE
HEATER (HC)
OUTDOOR COIL
THERMISTOR (TH3)
Normal
4.3k"~9.6k"
Abnormal
Open or short
Normal
PU12,18
PU24,30,36,42
Abnormal
1920" 1340"
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
FAN MOTOR(MF,1,2,3,4)
Normal
PU12,18 PU24,30
PU36
PU42
Motor terminal
or
Relay connector
Abnormal
77.3"
134.6"
100.2"
83.8"
73.9"
118.7"
61.5"
79.8"
Open or short
White — Blue
Blue — Red (Brown)
[PU36,42]
Protector
[PU12,18,24,30]
Red(Brown)
Blue
White
Orange(Yellow)
Red(Brown)
Blue
White
Orange(Yellow)
Protector
Protector
OPEN : 275±9˚F
CLOSE : 187±27˚F
4-1 Between remote controller and indoor unit
If wire is disconnected between the remote controller and the indoor unit, the POWER ON display does not appear despite
turning the power switch ON. The beep sound is not heard, either.
4-2 Phenomena due to wrong wiring between indoor and outdoor units
Wrong wiring Thermostat Phenomena
OFF The outdoor unit stops.
Operation stops. 9 minutes later, the check code ¨P8¨ appears
on the remote controller display.
9 minutes later, the check code ¨P8¨ appears on the remote controller display.
Disconnect between 1 and 1 or 2 and
2.
ON
OFF Operation stops.
ON
5. HOW TO CHECK THE PARTS
PU12EK PU18EK PU24EK PU30EK PU36EK PU42EK2 PU42EK7
PU18EK
1 PU24EK1 PU30EK1 PU36EK1 PU42EK21 PU42EK71
PU24EK2 PU30EK2 PU36EK2 PU42EK72
PU24EK3 PU30EK3 PU36EK3
24
DISASSEMBLY INSTRUCTIONS12
Outdoor
controller
board
Transformer
Capacitor
Contactor
Terminal block
Screws
Propeller
Motor support
Separator support plate
High-pressure switch
Lead
connectors
Valve bed
Crankcase heater
Propeller nut
Screws
Top panel
Service
panel
Cover
panel
Front panel
Outdoor unit (PU18EK)
OPERATING PROCEDURE PHOTOS
1. Electrical parts
(1) Remove top panel (3 screws in front, 2 screws in rear)
(2) Remove cover panel (1 screw).
The panel is anchored by clicks to the side panel.
Remove by pulling towards you.
(3) Remove cover panel (1 screw).
The panel is anchored by clicks on the right and left sides.
After removing the screw, pull the panel down and remove it
by pulling towards you.
NOTE : All panels are clasped, and should be
removed by shifting up and down.
Photo 1
Photo 2
2. Fan motor
(1) Remove front panel (3 screws).
Open the panel to a 45 degree angle and lift to remove. The
panel is clasped at three points on the left side.
(2) Remove propeller (1 set nut).
(3) Remove fan motor (3 screws).
Remove lead connector.
Photo 3
25
OPERATING PROCEDURE PHOTOS
Screws
Screws
Heat exchanger
Accumulator
Charge plug
Ball valve
Compressor
3. Heat Exchanger, Compressor
(1) Remove the rear panel (2 screws in front, 1 screw on the
side, 3 screws in the rear). Remove the valve bed, and open
the rear panel to the rear to remove.
(2) Remove right side panel (4 screws).
(3) Remove rear guard (3 screws).
(4) Remove separator support plate (4 screws).
(5) Remove motor support (2 screws).
(6) Remove valve bed (5 screws). The valve bed is clasped on
the right and left sides. Lift to remove.
(7) Remove the electrical parts box.
Remove the respective connector from high pressure
switch, crank case heater, outdoor coil thermistor and fan
motor lead.
(8) Remove separator (2 screws).
(9) Remove heat exchanger (2 screws).
Disconnect the welded section of pipe.
(10) Remove compressor (3 set nuts).
Remove the weldment of the compressor suction pipe and
discharge pipe.
Photo 4
Photo 5
Photo 6
26
Outdoor unit (PU24EK)
Screws
Panel cover
Motor support
Separator support place
High-pressure
switch
Valve bed
Crank case heater
Propeller fan
Propeller
nut
OPERATING PROCEDURE PHOTOS
NOTE : All panels are clasped, and should be
removed by shifting up and down.
1. Electrical parts
(1) Remove top panel (3 screws in front, 2 screws in rear)
(2) Remove cover panel (1 screw).
The panel is anchored by clicks to the side panel.
Remove by pulling towards you.
(3) Remove cover panel (1 screw).
The panel is clasped on the right and left sides. After removing the screw, pull the panel down and remove it by pulling
towards you.
Photo 1
Photo 2
Fan motor
capacitor
52C contactor
Terminal block
Screws
2. Fan motor
(1) Remove front panel (3 screws).
Open the panel to a 45 degree angle and lift to remove. The
panel is clasped at three points on the left side.
(2) Remove propeller (1 set nut).
(3) Remove fan motor (3 screws).
Remove lead connector.
Photo 3
27
OPERATING PROCEDURE PHOTOS
Screws
Screws
Heat exchanger
Accumulator
Charge plug
Ball valve
Compressor
3. Heat Exchanger, Compressor
(1) Remove the rear / right side panel (2 screws in front, 1 screw
on the side, 3 screws in the rear).
Remove the electrical box, valve bed, and open to the rear
to remove (anchors attached).
(2) Remove right side panel (4 screws).
(3) Remove rear guard (3 screws).
(4) Remove separator support plate (4 screws).
(5) Remove motor support (2 screws).
(6) Remove valve bed (5 screws). The valve bed is clasped on
the right and left sides. Lift to remove.
(7) Remove the electrical parts box.
Remove the respective connector from high pressure
switch, Low-pressure switch, crank case heater, shell ther-
mo, and fan motor lead.
(8) Remove separator (2 screws).
(9) Remove heat exchanger (2 screws).
Remove piping weld zone.
(10) Remove compressor (3 set nuts).
Remove the weldment of the compressor suction pipe and
discharge pipe.
Photo 4
Photo 5
Photo 6
28
13
PARTS LIST
STRUCTURAL PARTS
PU12EK PU18EK
PU18EK
1
1
2
10
9
8
7
No.
Parts No. Parts Name Specifications
R01 A08 662
1
R01 A00 662
R01 A08 668
2
R01 A00 668
3
R01 A00 675
4
R01 A00 686
R01 A08 661
5
R01 A00 661
6
R01 A00 658
R01 A08 682
7
R01 A00 682
R01 A08 698
8
R01 A00 698
9
R01 A00 641
10
T7W E03 130
3
SIDE PANEL
SIDE PANEL
FRONT PANEL
FRONT PANEL
FAN GUARD
BASE ASSEMBLY
SERVICE PANEL
SERVICE PANEL
PANEL COVER
REAR PANEL
REAL PANEL
REAR GUARD
REAR GUARD
TOP PANEL
MOTOR SUPPORT
4
12EK
1
1
1
1
1
1
1
1
1
1
5
Q'ty / set
PU
18EK
6
Remarks
(Drawing No.)
1
18EK
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Wiring
Diagram
Symbol
29
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PU24EK
PU24EK1
PU24EK2
PU30EK
PU30EK1
PU30EK2
PU24EK3
PU30EK3
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
1
R01 A11 662
R01 A00 675
R01 A00 655
R01 A11 668
R01 A10 686
T7W E00 529
R01 A11 661
R01 A00 658
R01 A11 682
T7W E04 698
T7W E02 641
T7W E04 130
SIDE PANEL (LEFT)
FAN GUARD
PANEL HANDLE
FRONT PANEL
BASE ASSEMBLY
DRAIN PAN
SERVICE PANEL
PANEL COVER
REAR PANEL
REAR GUARD
TOP PANEL
MOTOR SUPPORT
STRUCTURAL PARTS
PU24EK PU30EK
PU24EK
1 PU30EK1
PU24EK2 PU30EK2
PU24EK3 PU30EK3
1
2
3
12
11
10
9
3
4
5 7 8
6
30
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PU
1
2
3
4
5
6
7
8
9
10
11
12
R01 A14 662
R01 A14 668
R01 A00 675
R01 A00 655
R01 A14 686
R01 AK6 686
T7W E17 529
R01 A14 658
R01 A14 682
R01 A14 661
T7W E03 698
R01 A14 641
R01 85H 130
T7W E02 130
36EK
36EK
1
36EK2
36EK3
1
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
42EK2
42EK2
1
42EK72
42EK7
42EK7
1
1
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
SIDE PANEL (LEFT)
FRONT PANEL
FAN GUARD
PANEL HANDLE
BASE ASSEMBLY
BASE ASSEMBLY
DRAIN PAN
PANEL COVER
REAR PANEL
SERVICE PANEL
REAR GUARD
TOP PANEL
MOTOR SUPPORT
MOTOR SUPPORT
STRUCTURAL PARTS
PU36EK PU42EK2 PU42EK7
PU36EK
1 PU42EK21 PU42EK71
PU36EK2 PU42EK72
PU36EK3
12
1
2
11
10
9
8
3
4
6
5 7
31
4
FUNCTIONAL PARTS
PU12EK PU18EK
PU18EK
1
23
17
1819202122
1516
14
13
12
11
10
9
1 2 345 6 78
32
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PU
18EK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
MF3,MF
63H2
51C
51C
MC
MC
CH
TH3
52C
52C
C
C
C3
C3
T
T
F3<O.B>,F<O.B>
TB1
O.B
O.B
TB3
12EK 18EK
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
RED :12.3VAC,0.06A
BRN :12.3VAC,0.06A
RED :15.5VAC,0.2A
BRN :11.5VAC,0.2A
ORN :36.0VAC,0.02A
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
S6V-85FPH
OPEN psiG 469
MRA-98880-9030
MRA98881-093
RH247NAB
RH167NAB
240V 30W
3/8
5/8
5/8
0.126o0.071o31.5
0.126o0.063o31.5
S-U12UL 215VAC
VC-20F 230VAC
30µF 380V
25µF 370V
3µF 440V
2.5µF 440V
250V 6A
3P(L1,L2,GR)
2P(1,2)
T7W 850 763
R01 A00 115
T7W 850 208
T7W 966 238
T7W 969 238
T97 665 600
T92 650 452
T7W 850 236
R01 943 410
R01 951 411
R01 943 411
R01 590 413
R01 A00 440
T7W 973 507
T7W E07 425
R01 600 425
R01 J07 202
T7W A30 708
T7W 651 215
T7W 969 723
T7W 966 723
R01 576 255
R01 A00 255
T7W A30 799
T7W 850 799
T7W 410 239
T7W 850 716
T7W E08 315
T7W 850 315
R01 556 246
R01 K91 408
T7W 850 408
R01 30L 097
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
OVERCURRENT RELAY
OVERCURRENT RELAY
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
BALL VALVE
CHARGE PLUG
ACCUMULATOR
FUSIBLE PLUG
CAPILLARY TUBE
CAPILLARY TUBE
OUTDOOR COIL THERMISTOR
CONTACTOR
CONTACTOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
FAN MOTOR CAPACITOR
TRANSFORMER
TRANSFORMER
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
NUT
33
FUNCTIONAL PARTS
PU24EK
PU24EK
1
PU24EK2
PU24EK3
22
1
21
20
19
18
1617
15
14
13
12
11
10
9
2
23
1 2 53 4 6 7 8
34
No. Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PU
24EK1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
24EK2
24EK3
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
T7W 851 763
R01 A00 115
T7W 850 208
R01 41L 413
T97 517 300
T97 501 400
T7W 851 236
R01 943 410
R01 951 411
T7W E17 425
T7W 973 507
R01 A12 440
R01 J01 202
T7W A13 708
T7W 973 723
R01 653 255
T7W 850 799
T7W E05 799
T7W 410 239
T7W 850 716
T7W 850 315
T7W E08 315
R01 556 246
R01 K92 408
R01 30L 097
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CAPILLARY TUBE
FUSIBLE PLUG
ACCUMULATOR
OUTDOOR COIL THERMISTOR
CONTACTOR
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
TRANSFORMER
TRANSFORMER
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
S6V-60FPN
OPEN psiG 363
NH33NBD
NH33NBDT
240V 43W
3/8
5/8
0.126o0.063o17.3
S-N25EX
40+ 400V
4+ 440V
250V 6A
3P(L1, L2, GR)
2P(1, 2)
MF3,4,1,2
63H2
MC
MC
CH
TH3
52C
C
C3, 4
T
T
F3<O.B>,F<O,B>
TB1
O.B
O.B
TB3
24EK
RED: 12.3VAC, 0.06A
BRN: 12.3VAC, 0.06A
BRN: 11.5VAC, 0.2A
RED: 15.5VAC, 0.2A
ORN: 36.0VAC, 0.02A
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
35
FUNCTIONAL PARTS
PU30EK
PU30EK
1
PU30EK2
PU30EK3
22
1
21
20
19
18
1314151617
12
11
10
9
2
23
1 2 53 4 6 7 8
36
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PU
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
T7W 851 763
R01 A00 115
T7W 850 208
R01 41L 413
T97 511 300
T97 502 400
T7W 851 236
R01 47L 410
R01 670 411
T7W E18 425
T7W 973 507
R01 A12 440
R01 J01 202
T7W A13 708
T7W 867 723
R01 653 255
T7W 850 799
T7W E05 799
T7W 410 239
T7W 850 716
T7W 850 315
T7W E08 315
R01 556 246
T7W 412 408
R01 30L 097
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CAPILLARY TUBE
FUSIBLE PLUG
ACCUMULATOR
OUTDOOR COIL THERMISTOR
CONTACTOR
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
TRANSFORMER
TRANSFORMER
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
S6V-60FPN
OPEN psiG 363
NH41NAD
NH41NAHT
240V 43W
1/2
3/4
0.157o0.079
o29.1
S-N25EX
50µF 400V
4µF 440V
250V 6A
3P(L1,L2,GR)
2P(1,2)
MF3,4,1,2
63H2
MC
MC
CH
TH3
52C
C
C3,4
T
T
F3<O.B>,F<O,B>
TB1
O.B
O.B
TB3
30EK
30EK
1
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
30EK
2
30EK3
2
2
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
2
2
RED: 12.3VAC, 0.06A
BRN: 12.3VAC, 0.06A
BRN: 11.5VAC, 0.2A
RED: 15.5VAC, 0.2A
ORN: 36.0VAC, 0.02A
37
FUNCTIONAL PARTS
PU36EK
PU36EK
1
PU36EK2
PU36EK3
22
1
21
1617181920
15
14
13
12
11
10
9
22
8
7
6
122 3 4 5
38
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
36EK
36EK
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
PU
2
2
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
2
2
2
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
2
36EK
2
36EK3
2
2
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
2
VC086DC
OPEN psiG 469
NH47NAD
NH47NAHT
240V 43W
3/4
1/2
0.157o0.079o17.7
S-N25EX
60µF 360V
3µF 440V
250V 6A
3P(L1,L2,GR)
2P(1,2)
MF3,4,1,2
63H2
MC
MC
CH
TH3
52C
T
C
C3,4
F3<O.B>,F<O.B>
TB1
O.B
O.B
TB3
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CAPILLARY TUBE
FUSIBLE PLUG
OUTDOOR COIL THERMISTOR
ACCUMULATOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
RED:12.3VAC,0.06A
BRN:12.3VAC,0.06A
T7W 852 763
R01 A00 115
T7W 850 208
R01 41L 413
T97 518 300
T97 503 400
T7W 851 236
R01 670 411
R01 47L 410
T7W E06 425
T7W 973 507
T7W E24 202
T7W E01 440
T7W A13 708
T7W E05 799
T7W E02 723
R01 576 255
T7W 410 239
T7W 850 716
T7W 850 315
T7W E08 315
R01 556 246
T7W E24 408
R01 30L 097
39
FUNCTIONAL PARTS
PU42EK2
PU42EK2
1
25
16192021222324
1718
15
14
13
12
11
1
2
25
15
3
42
6
10
9
8
7
40
No.
Parts No. Parts Name Specifications
T7W 853 763
1
R01 A00 115
2
T7W 850 208
3
R01 41L 413
4
T97 513 300
5
T7W 851 236
6
R01 670 411
7
R01 47L 410
8
R01 442 425
9
T7W A34 704
10
T7W 973 507
11
T7W E24 202
12
T7W E01 440
13
T7W 868 708
14
T7W E05 799
15
T7W A34 723
16
T7W 853 723
17
T7W A34 234
18
R01 653 255
19
T7W 410 239
20
T7W 850 716
21
T7W 850 315
22
T7W E08 315
R01 556 246
23
R01 V29 408
24
R01 30L 097
25
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CAPILLARY TUBE
COMPRESSOR START RELAY
FUSIBLE PLUG
OUTDOOR COIL THERMISTOR
ACCUMULATOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
COMPRESSOR START CAPACITOR
RESISTOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
PA6N100UG
OPEN psiG 469
NH569NXA
240V 43W
3/4
1/2
0.157o0.079o7.1
AMVL320B
S-K35UR
RED:12.3VAC,0.06A
BRN:12.3VAC,0.06A
65µF 400V
65µF 400V
15K 4W
4µF 440V
250V 6A
3P(L1,L2,GR)
2P(1,2)
Q'ty / set
42EK2
2
2
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
PU
42EK2
2
2
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
Remarks
(Drawing No.)
1
Wiring
Diagram
Symbol
MF3,4,1,2
63H2
MC
CH
19
TH3
52C
T
C
C5
R
C3,4
F3<O.B>,F<O.B>
TB1
O.B
O.B
TB3
41
FUNCTIONAL PARTS
PU42EK7
PU42EK7
1
PU42EK72
23
18
19202122
17
16
15
14
13
12
11
1
2
23
10
9
8
3
1
2
7465
42
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
42EK7
1
42EK72
PU
42EK7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
T7W 853 763
R01 A00 115
T7W 850 208
R01 86H 201
R01 41L 413
T97 513 500
T7W 851 236
R01 670 411
R01 47L 410
T7W E10 425
T7W 973 507
T7W E24 202
T7W E01 440
T7W A14 708
T7W E07 708
T7W E05 799
T7W E02 723
R01 653 255
T7W 410 239
T7W 850 716
T7W E08 315
T7W E15 315
R01 556 246
T7W E07 408
R01 30L 097
2
2
1
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
2
2
2
1
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
2
MF1, 2
63H2
26C
MC
CH
TH3
52C
51C, 52C
T
C
C3,4
F3<O.B>,F<O.B>
TB1
O.B
O.B
TB3
FAN MOTOR
PROPELLER
HIGH PRESSURE SWITCH
DISCHARGE THERMAL SWITCH
CHARGE PLUG
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CAPILLARY TUBE
FUSIBLE PLUG
OUTDOOR COIL THERMISTOR
ACCUMULATOR
CONTACTOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
PA6N100UG
OPEN psiG 469
ZR42K3PFV
240V 43W
3/4
1/2
0.157o0.079o21.7
S-N35EX
MSO-N25KF
60µF 380V
4µF 440V
250V 6A
3P(L1,L2,GR)
2P(1,2)
RED:12.3VAC,0.06A
BRN:12.3VAC,0.06A
43
HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
TM
cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Aug. 2004 No.OC247 REVISED EDITION-E PDF 9
Distributed in Aug. 2004 No.OC247 REVISED EDITION-D PDF 9
Distributed in Dec. 2002 No.OC247 REVISED EDITION-C 17
Distributed in Dec. 2002 No.OC247 REVISED EDITION-B 17
Distributed in May. 2001 No.OC247 REVISED EDITION-A 25
Distributed in Mar. 2001 No.OC247 20
Made in Japan.
New publication, effective Aug. 2004
Specifications subject to change without notice.
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