Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TM
L
I
S
T
E
D
CUS
TECHNICAL & SERVICE MANUAL
<Outdoor unit>
Models
PUH18EK
No. OC245
REVISED EDITION-C
PUH24EK PUH24EK
1
PUH30EK PUH30EK1 PUH30EK2
PUH36EK PUH36EK1 PUH36EK2
PUH42EK PUH42EK1
PUH42EK7 PUH42EK71
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························8
8. WIRING DIAGRAM··········································11
9.
Outdoor unit
REFRIGERANT SYSTEM DIAGRAM
10. MICROPROCESSOR CONTROL ···················16
11. TROUBLESHOOTING·····································20
12. DISASSEMBLY INSTRUCTIONS····················25
13. PARTS LIST ····················································29
···················15
··············4
•The contents of LD6 in Main functions of LED
(page 13) have been revised.
•The contents of LD5 and LD6 in
TROUBLESHOOTING ACCORDING TO
CHECK CODE (page 22) have been revised.
•Refer to other manual as for Indoor Units.
•Please void OC247 REVISED EDITION-B.
Page 2
1
Rear
Right
Base
Front
Indoor unit Outdoor unit
Indoor
heat
exchanger
4•way
valve
Accumulator
Compressor
Outdoor
heat
exchanger
Capillary tubes
for heating
Capillary
tubes for
cooling
Liquid section
of piping
HIgh-pressure
liquid
refrigerant
Restrictor
valve
Restrictor valve
Indoor unit Outdoor unit
Indoor
heat
exchanger
4•way
valve
Accumulator
Compressor
Outdoor
heat
exchanger
Capillary tubes
for cooling
Capillary
tubes for
heating
Liquid section
of piping
Low-pressure
two-phase
refrigerant
Restrictor
valve
Restrictor valve
COOLING
HEATING
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.
The unique refrigerant circuit and a large accumulator always control the refrigerant to its optimum condition unless the
pipe length exceeds 100ft. The additional refrigerant charging work in the field which often caused
uncertain problems heretofore is completely eliminated. This unique system serves to improve the quality of work and
reliability, and also helps to speed up the installation work.
Figure 1. Normal Refrigerant Circulation System Figure 2. New Refrigerant Circulation System
With normal circulation systems, a high-pressure refrigerant, condensed for cooling by the outdoor heat exchanger, is
reduced in pressure by capillary tubes in the indoor unit after passing through the restrictor valve in the outdoor unit (see
Figure 1). With the new circulation system, the direction of the restrictor valve is reversed as shown in Figure 2, and the
condensed high pressure refrigerant is reduced in pressure by the capillary tubes in the outdoor unit. This results in a “twophase refrigerant” of reduced pressure in the liquid section of the piping, The density of this two-phase refrigerant is 1/3~
1/2 of that of the high pressure liquid refrigerant, and thus is required in smaller amounts (see Figures 1 and 2). As a result,
the length of the piping can be extended further, and the effects of height differences are reduced. These new circulation
system are also equipped with a large accumulator which allows the refrigerant required for the 100ft piping length to be
enclosed in the outdoor unit. The result is an air conditioner that requires no charging unless piping is extended beyond
100ft.
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
Page 3
TECHNICAL CHANGE2
(OC245 REVISED EDITION-A)
Change of the service parts.
Refer to 13.PARTS LIST for the details.
[Change points]
BYPASS VALVE and BYPASS VALVE SOLENOID COIL has been changed to externals.
It has not been functionally changed.
Therefore, the piping connected with the BYPASS VALVE has been changed.
PUH30EK
PUH36EK
➔
PUH42EK
Unit:inch
1-55/64 I1/16
1-37/64 I5/64
1-37/64 I5/64
(OC245 REVISED EDITION-B)
PUH24EK ➔ PUH24EK1
PUH30EK1 ➔ PUH30EK2
PUH36EK1 ➔ PUH36EK2
[Change points]
COMPRESSOR has been changed.
(PUH24EK model) NH33NBD ➔ NH33NBDT
(PUH30EK model) NH41NAD ➔ NH41NAHT
(PUH36EK model) NH47NAD ➔ NH47NAHT
Refer to 5.SPECIFICATIONS, 6.DATA and 13.PARTS LIST for details.
PUH30EK
PUH36EK1
PUH42EK1
1
Unit:inch
1-31/32
1-27/64 I5/64
1-29/64 I5/64
PUH42EK7 ➔ PUH42EK7
[Change points]
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 CONTOROLLER BOARD has been changed.
Refer to 13.PARTS LIST for details.
1
3
Page 4
3 COMBINATION OF INDOOR AND OUTDOOR UNITS
Models
PLH•AK
PLH•FK
PCH•EK
PKH•EK
PKH•FK(3)
PKH•FL
PCH•GK
4
PART NAMES AND FUNCTIONS
Indoor unit
Service
manual No.
OC244
OC002, OC004
OC195
OC002, OC004
OC193
OC002, OC004
OC120, OC197A
OC273
OC276
OC277
18
EK
—
—
24
EK
EK
Outdoor unit
PUH
30 36 42
EK
1
EK
—
—
—
1
EK2
—
EK
—
—
—
—
EK
1
EK2
———
EK
—
—
—
EK1
—
—
—
—
—
EK7
EK7
—
—
—
—
—
1
Air
intake
PUH24EK
PUH24EK1
Outdoor unit
Air
intake
Air
outlet
Air
outlet
PUH18EK
Outdoor unit
Air
outlet
Air
intake
PUH30EK PUH36EK PUH42EK PUH42EK7
PUH30EK1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
Outdoor unit
4
Page 5
SPECIFICATIONS5
OUTDOOR UNIT MODELS
External finish
Power supply
Max.fuse size (time delay)
Min.ampacity
Fan motor
Compressor
Crankcase heater
Refrigerant control
Defrost method
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
PUH18EK
Model
PUH18EK
0.75
RH247NAB
12
37
0.11/0.12(23/28)
53
33-1/2
131
5 lbs 8 oz
16<MS-56>
Max. 130
Max. 130
PUH24EK
0.65+0.65
202
9 lbs 15 oz
37<MS32(N-1)>
PUH30EK
20
55
10 lbs 2 oz
Munsell 5Y 7/1
208/230, 1, 60
30
0.75+0.75
Capillary tube
Reverse cycle
Indoor unit-outdoor unit:DC12V
R22
40<MS32(N-1)>
Not supplied(optional parts)
3/4
Flared
Flared
PUH36EK
22
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
D.B. 80˚F, W.B. 67˚F
D.B. 70˚F, W.B. 68˚F
Outdoor intake air temperature
D.B. 115˚F
D.B. 0˚F w
D.B. 75˚F, W.B. 65˚F
D.B. 17˚F, W.B. 15˚F
Cooling
Heating
Maximum
Minimum
Maximum
Minimum
PUH42EK PUH42EK7
PUH42EK
PUH42EK
1
27
NH569NXA
20.0
105
268
12 lbs 9 oz
49<MS32(N-1)>
PUH42EK7
PUH42EK7
1
28
ZR42K3PFV
20.4
109
246
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)
PUH30EK
PUH30EK1
NH41NAD
14.0
73
245
PUH
30EK
2
NH41NAHT
12.9
75
247
PUH
24EK
1
NH33NBDT
10.8
57
PUH
24EK
NH33NBD
11.5
54
PUH36EK
PUH36EK1
NH47NAD
17.5
87
246
PUH
36EK
2
NH47NAHT
15.1
81
248
34-1/4
11-5/8
3/8
5/8
56
7/8
38-3/16
13-9/16
1/2
20
16
40
0.8+0.8
MODELS : PUH18EK PUH24EK PUH30EK PUH36EK PUH42EK PUH42EK7
PUH24EK1 PUH30EK1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
5
Page 6
6
PUH18EK
PUH42EK7
PUH42EK7
1
Piping length (one way)
100 ft 115 ft 130 ft 145 ft 160 ft 164 ft
Factory
charged
Service Ref.
PUH30EK
PUH30EK
1
PUH30EK2
PUH24EK
PUH24EK
1
PUH36EK
PUH36EK
1
PUH36EK2
PUH42EK
PUH42EK
1
0
0
0
0
0
0
2
2
5
5
5
5
4
4
10
10
10
10
—
6
14
14
14
14
—
8
19
19
19
19
—
9
20
20
20
20
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
RH247NAB NH33NBD
Unit
PUH18EK
PUH24EK
PUH30EK
PUH30EK
1
NH41NAD
1.59
3.22
0.92
1.93
NH33NBDT
PUH24EK
1
0.92
1.93
NH41NAHT
PUH30EK
2
0.62
1.51
0.63
1.37
at 68°F(Only PUH42EK7 PUH42EK7
1 : at 77°F)
Compressor model
Winding
Resistance
( " )
R-C
S-C
Unit
ZR42K3PFV
PUH36EK
2
0.54
1.28
0.55
1.24
NH47NAD
PUH36EK
PUH36EK
1
0.52
1.28
NH47NAHT
PUH42EK
PUH42EK
1
PUH42EK7
PUH42EK71
NH569NXA
0.55
1.24
at 68°F(Only PUH42EK7 PUH42EK7
1 : at 77°F)
DATA
1. ADDITIONAL REFRIGERANT CHARGE (R22 : oz)
2. COMPRESSOR TECHNICAL DATA
6
Page 7
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
PUH18EK
53
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
PUH24EK
PUH24EK1
55
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
PUH30EK PUH36EK
PUH30EK
1 PUH36EK1
PUH30EK
2 PUH36EK2
55
Ambient temperature 80°F
Test conditions are based on JIS Z8731
3.3ft
3.3ft
MICROPHONE UNIT
GROUND
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
PUH42EK PUH42EK7
PUH42EK1 PUH42EK71
56
7
Page 8
7 OUTLINES AND DIMENSIONS
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
1-9/16
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
1-1/16
1/4
Outdoor Unit - necessary surrounding clearance
Outdoor Unit PUH18EK
Unit : inch
8
Page 9
Outdoor Unit PUH24EK
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
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
1-9/16
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.
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
1-1/16
PUH24EK1
Unit : inch
9
Page 10
Terminal block for
indoor and outdoor
unit connection
Terminal block for power line
Ground
terminal
Handle
for moving
Service panel
Refrigerant pipe
(Flared)
PUH30/36EK [3/4
PUH42EK [7/8
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
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
1-1/16
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
1-9/16
Outdoor Unit
PUH30EK PUH36EK PUH42EK PUH42EK7
PUH30EK
1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
Unit : inch
10
Page 11
8
LD8
LD7
LD6
LD5
LD4
LD3
LD2
LD1
O.B
SW1
SW2
SW3
OFF
ON
2 1
CN2
RT
LED
1
2
3
TB3
YLW
ORN
BRN
FROM INDOOR UNIT
CONNECTING WIRES
12V DC (polar)
L1
L2
GR
GRN
TB1
POWER SUPPLY
1{ 208/230V
60Hz
3
2
1
CN3
CN4T
4 3 2 1
CN4
4 3 2 1
BRN 12.3V AC
RED 12.3V AC
MF
BLU
BLU
WHT
BLU
WHT
WHT
RED
RED
ORN ORN
C1
MF2
MF1
FC
26C
63H2
63H1
63H1
51CM
5
BRN
BRN
YLW
YLW
YLW
YLW
RED
RED
BLU
63H2
MC
R
C
C
S
21
51C
52C
BLU
BLU
WHT
RED
WHT
UR
TW
RED
RED
RED
ORN
BLK
BLK
T
208V
230V
21R
RED
RED
RED
RED
SV
WHT
WHT
TRF
21
S4
BLK
BLK
BLK
BLK
21S4
52C
GRY
GRY
GRY
GRY
52C
WHT
WHT
CH ZNR
R/1
S/2
T/3
BLU BLU
F
HC
WHT
WHT
4
S
A
B
X11X12X13X14
X14
X13 X12 X11
4
3
2
1
WIRING DIAGRAM
MODEL : PUH18EK
C
C1
F<O.B>
FC<O.B>
HC
LD1~LD8
MC
MF
O.B
COMPRESSOR CAPACITOR
FAN CAPACITOR
FUSE<6A>
FAN CONTROLLER
CRANKCASE HEATER
LED<CHECK,SERVICE>
COMPRESSOR
FAN MOTOR<INNER THERMOSTAT>
OUTDOOR CONTROLLER BOARD
RT
SW1•2•3<0.B>
T
TB1,3
X11<O.B>
X12<O.B>
X13<O.B>
OUTDOOR COILTHERMISTOR
<32˚F/15kΩ,77˚F/5.4kΩ>
SELECTOR<CHECK,SERVICE>
TRANSFORMER
TERMINAL BLOCK
CRANKCASE HEATER RELAY
COMPRESSOR RELAY
21S4 RELAY
X14<O.B>
ZNR<O.B>
21R
21S4
51C
52C
63H1
63H2
21R RELAY
VARISTOR
BYPASS VALVE SOLENOID COIL
4-WAY VALVE SOLENOID COIL
OVERCURRENT RELAY
CONTACTOR
CONTROL HIGH PRESSURE SWITCH
PROTECT HIGH PRESSURE SWITCH
Main function of LED(when both No.1 and 2 of are "OFF")
LED NO. Output display (light) Check display (flush)
LD1 Compressor indoor command —
LD2 Heating indoor command —
LD3 63H1 ON RT short/open
LD4 Compressor ON 63H2 functions
LD5 Outdoor fan ON —
LD6 4-way valve ON —
LD7 Bypass valve ON RT overheat protection
LD8 Crankcase heater ON Defective input
NOTES : 1. If the operation stops to function of the protection device, the check display flashes.
● The connector marked
2. Symbols used in wiring diagram above are. / :Terminal block, :Connector, :PC board insertion tab.
CAUTION FOR 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.
w Since the indoor transformer (T) is connected with 230V power, if 208V power is used,
change the wiring connection as shown in the right figure.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
● Since the indoor and outdoor connecting wires has polarity, make sure to connect the same terminal numbers (1,2,3) for indoor
and outdoor units.
s
— — is to turn the compressor ON-OFF during servicing.
SW3
11
How to use SW1 and 2
● Pressing erases the past check contents
SW1
loaded on the microcomputer.
● The output display (light) remains during operation but pressing displays the past check
SW2
contents in flashing mode. Pressing the switch
again return to output display (light).
White connector
When Power Supply is 208V
w
ORANGE
RED WHITE
208V
230V
Page 12
MODELS : PUH24EK PUH24EK1
FAN CONTROLLER
FUSE(6A)
4-WAY VALVE SOLENOID COIL
BYPASS VALVE SOLENOID COIL
21R
21S4
F(O.B)
FC(O.B)
LED(CHECK,SERVICE)
LD1~LD8
MC
COMPRESSOR MOTOR
(INNER THERMOSTAT)
FAN MOTOR(INNER THERMOSTAT)
MF1,2
O.B
SW1•2•3(O.B)
T
TB1,3
RT
OUTDOOR COIL THERMISTOR
(32°F/15K',77°F/5.4K')
TERMINAL BLOCK
TRANSFORMER
SELECT SWITCH(CHECK,SERVICE)
OUTDOOR CONTROLLER BOARD
HC RELAY
X11(O.B)
PROTECT HIGH PRESSURE SWITCH
CONTROL HIGH PRESSURE SWITCH
COMPRESSOR CONTACTOR
VARISTOR
21R RELAY
21S4 RELAY
COMPRESSOR RELAY
X13(O.B)
X12(O.B)
X14(O.B)
ZNR(O.B)
52C
63H1
63H2
C1,2
C
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
CRANKCASE HEATER
HC
RED
RED
BLU
WHT
WHT
BLU
4
3
2
4
3
2
BLU
WHT
BLU
WHT
BRN
YLW
RED
ORN
RED
GRY
GRY
RED
WHT
WHT
1
1
X11X12X13
1234
CN2
63H263H1
BRN
3
1
X13X14
X14
SV
RED
RED
21R
21S4
21
S4
BLK
BLK
MF1
MF2
C2
BRN
YLW
ORN
C1
RED
52C
1/L1
5/L3
6/T3
2/T1
BLU
WHT
BLU
C
RED
S
C
MC
R
63H1
BRN
BRN
RED
RED
GRN
T
LED
ORN
YLW
1
2
TB3
GR
L2
L1
RED AC12.3V
BRN AC12.3V
RED
ORN
BLK
RED
BLK
RED
230V
208V
4
1234
CN4T
CN3
2
3
12
SW3
SW2
O.B
SW1
TO INDOOR UNIT
CONNECTING WIRES
DC 12V (polar)
TB1
POWER SUPPLY
1[ 208/230V
60Hz
ON
OFF
LD7
LD1
LD2
LD3
LD4
LD5
LD6
LD8
WHT
WHT
F
5
RT
X11X12
CN4
TRF 52C
WHT
WHT
GRY
GRY
S
A1
A2
52C
HC
CH
ZNR
R/1 S/2 T/3
BLU BLU
YLW
YLW
YLW
YLW
BLU
BLU
WHT
BLU
WHT
FC
26C
63H2
51CM
MF2
MF1
Since the indoor and outdoor connecting wires has polarity,make sure to connect the same terminal numbers(1,2,3)for indoor and outdoor units.
CAUTION FOR INDOOR AND OUTDOOR CONNECTING WIRES
wiring connection in the following Procedure.
Since the indoor transformer(T) is connected with 230V power,if 208V power is used,change the
2. Symbols used in wiring diagram above are. :Terminal block :Connector :PC board insertion tab.
Bypass valve ON
4-Way valve ON
63H1 ON
Heating indoor command
ORANGE
230V
WHITE
RED
208V
When Power Supply is 208Vw
White connector
S
to output display(light).
in flushing mode. Pressing the switch again returns
SW2
but pressing displays the past check contents
The output display (light) remains during operation
loaded on the microcomputer.
SW1
Pressing erases the past check contents
SW3
(when both No.1 and 2 of are"OFF")
How to use SW1 and 2
Since LD8 lights when normal power is turned"ON",check the power supply with the"ON"or"OFF"LD8.
CAUTIONS FOR POWER SUPPLY WIRING
The compressor stops by disconnecting the white connector as shown at the right.
The connector marked is to turn the compressor ON-OFF during servicing.
CAUTION FOR SERVICING
1. If the operation stops to function of the protection device,the check display flushes.
NOTES:
Defective input
RT overheat protection
63H2 functions
Pipe temp.sensor short/open
Check display(flush)
Crankcase heater ON
Outdoor fan ON
Compressor ON
Compressor indoor command
Output display(light)
LD8
LD7
LD6
LD5
LD4
LD3
LD2
LD1
LED NO.
ÆÆ
Main functions of LED
w
PUH30EK PUH30EK1 PUH30EK2
12
Page 13
MODELS : PUH36EK PUH36EK1 PUH36EK2
PUH42EK PUH42EK1
PUH42EK7
CRANKCASE HEATERHC
C1,2
FAN MOTOR CAPACITOR
C COMPRESSOR CAPACITOR
COMPRESSOR START CAPACITORC5
FC(O.B)
F(O.B)
21S4
FAN CONTROLLER
FUSE(6A)
4-WAY VALVE SOLENOID COIL
MC
O.B
SW1•2•3(O.B)
T
TB1,3
RT
BYPASS VALVE SOLENOID COIL21R
LD2
1234
LD3
4
RED
BLK
SW3
LED
LD4
LD5
RED
RED
LD6
RED
21R
X12(O.B)
LD7
LD8
SV
WHT
WHT
LED(CHECK,SERVICE)LD1~LD8
1
TO INDOOR UNIT
CONNECTING WIRES
DC 12V (polar)
RED AC12.3V
POWER SUPPLY
1[ 208/230V
60Hz
Main functions of LED
LED NO.
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
1. If the operation stops to function of the protection device,the check display flushes.NOTES :
2. Symbols used in wiring diagram above are. :Terminal block :Connector :PC board insertion tab.
CAUTION FOR SERVICING
The connector marked 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.
W
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(1,2,3)for indoor and outdoor units.
Compressor indoor command
Heating indoor command
63H1 ON
Compressor ON
Outdoor fan ON
4-Way valve ON
Bypass valve ON
Crankcase heater ON
YLW
2
ORN
3
BRN
TB3
AC12.3V
BRN
L1
L2
GR
(when both No.1 and 2 of are "OFF") How to use SW1 and 2
Output display(light)
S
TB1
T
O.B
RED
ORN
SW1
SW2
SW3
3
2
1
GRN
12
CN3
CN4T
208V
230V
LD1
OFF
ON
RED
BLK
COMPRESSOR MOTOR(INNER THERMOSTAT)
FAN MOTOR(INNER THERMOSTAT)MF1,2
OUTDOOR CONTROLLER BOARD
SELECT SWITCH(CHECK,SERVICE)
TRANSFORMER
TERMINAL BLOCK
OUTDOOR COIL THERMISTOR
(32°F/15K',77°F/5.4K')
HC RELAYX11(O.B)
COMPRESSOR RELAY
RT
BLK
X11X12
WHT
GRY
GRY
S
A1
GRY
52C
A2
BLU
WHT
BLU
C
CN2
X14
WHT
RED
1/L1
5/L3
Pipe temp.sensor short/open
63H2 functions
26C functions (PUH42EK7)
RT overheat protection
Defective input
X13X14
TRF 52C
21S4
BLK
BLK
WHT
BLK
21
S4
52C
2/T1
6/T3
Check display(flush)
CN4
CH
WHT
HC
RED
1234
X11X12X13
F
ZNR
R
C
S
White connector
X13(O.B)
X14(O.B)
ZNR(O.B)
52C
63H1
63H2
19
R
26C
63H1
R/1 S/2 T/3
BLU BLU
MC
Pressing erases the past check contents
loaded on the microcomputer.
The output display (light) remains during operation
but pressing displays the past check contents
in flushing mode. Pressing the switch again returns
to output display(light).
21S4 RELAY
21R RELAY
VARISTOR
COMPRESSOR CONTACTOR
CONTROL HIGH PRESSURE SWITCH
PROTECT HIGH PRESSURE SWITCH
COMPRESSOR START RELAY
RESISTOR
DISCHARGE THERMAL SWITCH
5
BRN
BRN
PUH42EK7
Only
52C
1/L1
2/T1
6/T3
5/L3
SW1
SW2
FC
26C
63H2
51CM
RED
RED
BLU
BLU
63H263H1
3
208V
230V
BLU
19
19
YLW
YLW
YLW
YLW
26C
PUH42EK , PUH42EK1 Only
BLU
WHT
WHT
R
BLU
C5
When Power Supply is 208V
W
ORANGE
WHT
1
2
MF1
MF2
RED
WHITERED
MF2
MF1
BLU
WHT
RED
ORN
YLW
BRN
WHT
BLU
BLU
C
RED
4
3
2
1
1
2
3
4
WHT
BLU
BLU
WHT
RED
ORN
YLW
BRN
WHT
BLU
R
C
S
C1
C2
MC
13
Page 14
51C functions
THERMAL RELAY
51C
26C functions
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
RT overheat protection
Defective input
NOTES: 1. If the operation stops to function of the protection device,the check display flushes.
2. Symbols used in wiring diagram above are. :Terminal block :Connector :PC board insertion tab.
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.
w 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(1,2,3)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")
S
White connector
w When Power Supply is 208V
208V
RED
WHITE
230V
ORANGE
Heating indoor command
63H1 ON
4-Way valve ON
Bypass valve ON
SYMBOL
HC
NAME SYMBOL NAME SYMBOL NAME
CRANKCASE HEATER
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITORC
C1, 2
63H2
63H1
52C
ZNR(O.B)
X14(O.B)
X12(O.B)
X13(O.B)
COMPRESSOR RELAY
21S4 RELAY
21R RELAY
VARISTOR
COMPRESSOR CONTACTOR
CONTROL HIGH PRESSURE SWITCH
PROTECT HIGH PRESSURE SWITCH
X11(O.B) HC RELAY
OUTDOOR CONTROLLER BOARD
SELECT SWITCH(CHECK,SERVICE)
TRANSFORMER
TERMINAL BLOCK
(32°F/15kΩ,77°F/5.4kΩ)
PIPE TEMPERATURE THERMISTOR
RT
TB1, 3
T
SW1·2·3(O.B)
O.B
MF1,2 FAN MOTOR(INNER THERMOSTAT)
COMPRESSOR MOTOR(INNER THERMOSTAT)
MC
LD1~LD8
LED(CHECK, SERVICE)
FC(O.B)
F(O.B)
21S4
21R BYPASS VALVE SOLENOID COIL
4-WAY VALVE SOLENOID COIL
FUSE(6A/250V)
FAN CONTROLLER
26C
DISCHARGE THERMAL SWITCH
96
95
51C
2/T1
4/T2
6/T3
1/L1
3/L2
5/L3
RED
YLW
YLW
51C
MF1
MF2
51CM
63H2
26C
FC
WHT
BLU
WHT
BLU
BLU
BLUBLU
T/3S/2R/1
ZNR
CH
HC
52C
A2
A1
S
GRY
GRY
WHT
WHT
52CTRF
CN4
X12 X11
RT
5
F
WHT
WHT
LD8
LD6
LD5
LD4
LD3
LD2
LD1
LD7
OFF
ON
POWER SUPPLY
1[ 208/230V
60Hz
TB1
TO INDOOR UNIT
CONNECTING WIRES
DC 12V (polar)
SW1
O.B
SW2
SW3
21
3
2
CN3
CN4T
4321
4
208V
230V
RED
BLK
RED
BLK
ORN
RED
BRN AC12.3V
RED AC12.3V
L1
L2
GR
TB3
2
1
YLW
LED
ORN
T
GRN
RED
RED
BRN
BRN
63H1
R
MC
C
S
RED
C
BLU
WHT
BLU
52C
RED
C1
ORN
YLW
BRN
C2
MF2
MF1
BLK
BLK
21
S4
21S4
21R
RED
RED
SV
X14
X14 X13
1
3
BRN
63H1
63H2
CN2
4321
X13 X12 X11
1
1
WHT
WHT
BLK
GRY
GRY
BLK
ORN
RED
YLW
BRN
WHT
BLU
WHT
BLU
2
3
4
2
3
4
BLU
WHT
WHT
BLU
26C
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).
•
•
MODEL : PUH42EK71
14
Page 15
9
Outdoor unit
Outdoor unit
Outdoor unit
Capillary tube size:(ODxIDxLength)
The symbol { indicates diameter.
Capillary
tube
({0.157x{0.079x33.5)
Refrigerant pipe
(option)
{3/8"
(with heat insulator)
Refrigerant pipe
(option)
{5/8"
(with heat insulator)
Ball valve
(with service port)
Ball valve
Strainer
Strainer
Flared
connection
Accumulator
Muffler
Flexible tube
Compressor
Service
port
(check)
Service
port
(check)
Fusible
plug
Bypass
valve
Oil separator
4-way valve
Control
high pressure
switch
Protect
high pressure
switch
Outdoor coil
thermistor
RT
Restrictor
valve
Capillary
tube
({0.126x{0.063x17.3)x2
Refrigerant pipe
(option)
{3/8"
(with heat insulator)
Refrigerant pipe
(option)
{5/8"
(with heat insulator)
Ball valve
(with service port)
Ball valve
Strainer
Strainer
Flared
connection
Accumulator
Muffler
Flexible tube
Compressor
Service
port
(check)
Service
port
(check)
Fusible
plug
Bypass
valve
Oil separator
4-way valve
Control
high pressure
switch
Protect
high pressure
switch
Outdoor coil
thermistor
RT
Restrictor
valve
Capillary tube
PUH30EK
PUH30EK1
PUH30EK2
({0.157x{0.079x23.6)x2
PUH36,42EK
PUH36,42EK1
PUH36EK2
({0.157x{0.079x17.7)x2
PUH42EK7
PUH42EK71
({0.157x{0.079x22.0)x2
Capillary tube
([0.157o[0.118o7.87)
Refrigerant pipe
(option)
{1/2"
(with heat insulator)
Refrigerant pipe
(option)
PUH30EK, PUH30EK1, PUH30EK2
{3/4"
PUH36EK, PUH36EK1, PUH36EK2
PUH42EK, PUH42EK1
{7/8"
PUH42EK7,
PUH42EK71
(with heat insulator)
Ball valve
(with service port)
Ball valve
Strainer
Strainer
Flared
connection
Accumulator
Muffler
Flexible tube
Compressor
Service
port
(check)
Service
port
(check)
Fusible
plug
Bypass
valve
Oil separator
4-way valve
Control
high pressure
switch
Protect
high pressure
switch
Outdoor coil
thermistor
RT
Restrictor
valve
COOL
HEAT
w
W1
W1 Capillary tube
([0.098o[0.024o39.4)
W1
W1 Capillary tube
([0.098o[0.024o39.4)
W1
W1 Capillary tube
([0.098o[0.024o39.4)
REFRIGERANT SYSTEM DIAGRAM
PUH18EK
PUH24EK
PUH24EK
1
Unit : inch
PUH30EK PUH36EK PUH42EK PUH42EK7
PUH30EK1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
15
Page 16
10 MICROPROCESSOR CONTROL
10 minutes 1
ON
Thermostat
Outdoor fan
4-way valve
(cool)
4-way valve
(HEAT)
Bypass valve
Compressor
Crankcase heater
(with jumper wire
J3)
Crankcase heater
(without jumper
wire J3)
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
60 minutes 60 minutes 60 minutes 60 minutes 60 minutes
3 minutes
10 minutes
3 minutes
Repeats 60-minutes
ON/OFF
60 minutes
60 minutes
Operation starts by
POWER button ON.
Operation stops by
POWER button OFF.
The room temperature displayed on remote controller
becomes equal to set temperature.
The room temperature displayed on remote controller
becomes different from set
temperature.
1. OUTDOOR UNIT CONTROL
1 Outdoor fan control
The rotational frequency of outdoor fan is phase-controlled according to the outdoor coil temperature. This control allows the
cooling operation even with the low outside-air temperature and the heating operation even with the high outside-air temperature.
2 Outdoor unit control
The outdoor unit turns ON/OFF the cooling/heating operation according to orders given from the indoor unit.
3 Protective functions
1 If a reversed-phase, an open phase, or an indoor controller abnormality is detected, the outdoor unit will stop operation and
the check mode will start. (For the check mode details, see the indoor unit TECHNICAL & SERVICE MANUAL.)
2 If a protective function works, the compressor will stop running. Three minutes later, the compressor will restart. If the protec-
tive function works again, the compressor will stop running and the check mode will start.
3 The protective function is memorized.
4 The memory is cleared when the POWER ON/OFF button on the remote controller is turned OFF. However, the check mode
display continues until the outdoor unit receives the “operation ON” command from the indoor unit.
4 COOL/HEAT operation time chart
w1 If compressor restarts within 10 minutes, 4-way valve remains ON.
16
Page 17
ON
Outdoor fan
Compressor
4-way valve
Bypass valve
Auto vane
Indoor fan
(Remote controller still displays set direction.)
Outdoor unit
Indoor unit
ON
Set direction
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
Set direction
Defrosting
starts.
Defrosting
stops.
5 Defrosting in HEAT mode
<Defrosting time chart>
(1) Start conditions
A. When all of the following conditions are satisfied, defrosting will start. However, when the bypass valve turns OFF,
defrosting starts 10 minutes later.
(a) More than seven minutes have passed since the compressor start-up.
(b) The outdoor coil thermistor reads 23˚F or below.
(c) The outdoor fan motor output step is 100%
(d) Total time of compressor operation exceeds 30 minutes, and the outdoor coil temperature has fallen by 14 degrees
or more in comparison with that of 10 minutes after the compressor start-up.
NOTE: The outdoor coil temperature 10 minutes after the compressor start-up is memorized until the defrosting
operation has ended.
B. When all of the following conditions are satisfied, defrosting will start.
(a) The same as above (a) ~ (c) in item A
(b) Total time of compressor operation exceeds “defrost interval”.
Further information on the defrost interval is described in (3).
C. After the total time of compressor operation exceeds the defrost interval, the thermostat repeats ON/OFF three times.
Two minutes after the fourth “ON” of the thermostat, if the outdoor coil thermistor reads 23˚F or below and the fan output output is 100%, defrosting will start.
NOTE: The count of the thermostat ON/OFF is cleared by the compressor-OFF command or defrosting start-up.
(2) During defrosting
● Even if the thermostat turns OFF, defrosting continues.
● The 4-way valve, bypass valve, outdoor fan, and indoor fan are OFF.
17
Page 18
(3) Defrost interval
The defrost interval time is determined as follows.
● Initial defrost interval is 50 minutes.
● The defrost interval after defrosting depends on the preceding defrosting time as shown below.
Defrosting operation time Next defrost interval
3 minutes or below 120 minutes
3 to 7 minutes 80 minutes
7 to 10 minutes 60 minutes
10 to 15 minutes 40 minutes
15 minutes (Maximum) 30 minutes
NOTE1:If the unit stops during defrosting , the next defrost interval will be 50 minutes.
NOTE2:If a protection function works for the first time during defrosting, the compressor will stop.
After a 3-minute time delay, defrosting will restart. In this case, a 3-minute time delay is included with the defrosting
time.
If the protection function works for the second time, the unit stops operation and displays the check code.
The next defrost interval will be 30 minutes.
NOTE3:When the defrosting has ended, the total time of the compressor operation is cleared.
(4) Termination conditions
Defrosting finishes when any of the following conditions are satisfied.
1Defrosting has continued for 15 minutes.
2Outdoor coil thermistor reads 72˚F or above for the first 75 seconds after defrosting start-up.
3Outdoor coil thermistor reads 46˚F or above after the 75-second defrosting.
4Power ON/OFF button is turned OFF during defrosting.
6 Actuators
(1) Bypass valve control
<Cooling mode>
1When the unit stops due to the coil frost prevention, the bypass valve turns ON. When one hour has passed since the
compressor stopped, the bypass valve returns to OFF.
2When the compressor operates with the bypass valve at ON for more than 30 minutes, the bypass valve turns OFF.
3When the compressor stops with the bypass valve at OFF, the bypass valve turns ON and remains ON for three minutes.
<Heating mode>
1When the unit starts for the first time after the circuit breaker has been turned ON, or when it starts after the compressor
OFF of 30 minutes or more, if the outdoor coil thermistor reads 54˚F or more, the bypass valve turns ON.
2When the high pressure switch (63H1) works, the bypass valve turns ON.
3When the bypass has been ON for 30 minutes:
● If the high pressure switch has already returned, the bypass valve turns to OFF.
● If not, the fan output step keeps 70 for three minutes. Meanwhile, if the high pressure switch returns, the bypass valve
turns OFF. Otherwise the normal fan control starts.
4When the operation mode changes or stops, the bypass valve turns ON and remains ON for three minutes.
<Defrosting operation>
1The bypass valve is OFF.
(2) Crankcase heater control
1With jumper wire J3
The crankcase heater is ON from when the power is turned ON until the compressor starts, and then turns ON one hour
after the compressor stops.
2Without jumper wire J3
The crankcase heater is ON from when the power is turned ON until the compressor starts, and repeats 1-hour ON and 1hour OFF.
18
Page 19
7 Service functions
(1) Compulsory defrosting
1When all of the following conditions are satisfied, pressing SW2 starts the compulsory defrosting.
● During HEAT mode
● The compressor is ON.
● The outdoor coil temperature is being displayed by LED.
(Outdoor controller board dip switch SW3-1 : OFF, SW3-2 : ON)
● The outdoor coil thermistor reads 46°F or below.
2The operation state and the termination conditions of the compulsory defrosting are the same as those of the normal
defrosting. As an exception, the defrost interval after the defrosting completion is 50 minutes.
(2) Fixed fan-output
While the compressor is operating (except during defrosting) and the fan output step is indicated by LED, pressing SW2
fixes the fan output. The fixed fan-output can be released when any of the following conditions are satisfied.
1SW2 is pressed again.
2SW3 setting is changed.
3The compressor stops.
4Defrosting operation starts.
(3) 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)
SW3-1,2: Switches the output state indication items (dip switch)
For further information, refer to page 20.
(4) 100% fan output
Fan output is fixed to 100% by shorting the connector CN22. However, the fan stops during compressor OFF or defrosting.
Open-circuit of CN22 restarts the normal fan control.
(5) Time shortening
Short circuit of the connector CN21 shortens the time as follows
1Fan control period: 30 seconds → 3 seconds
2Three-minutes time delay function : 3 minutes → 3 seconds
3Max. time of defrosting : 15 minutes → 15 seconds
4Defrost interval : 30 ~ 120 minutes → 3 ~ 12 seconds
5Compressor ON/OFF time for bypass valve ON/OFF : 30 minutes → 3 seconds
6Compressor ON time to start other functions : x minutes → x seconds
7Crankcase heater operation : 1 hour → 6 seconds
19
Page 20
11 TROUBLESHOOTING
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
Bypass valve ON
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.
20
Page 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 PUH18EK PUH24EK
PUH24EK
1
2 PUH30EK PUH36EK PUH42EK PUH42EK7
PUH30EK1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
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.
21
Page 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
(PUH42EK7)
Thermal switch (26C) function
(PUH42EK7)
(PUH42EK7
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.
22
Page 23
4. WRONG WIRING ON SITE
OutdoorIndoor
1
2
3
1
2
3
OutdoorIndoor
1
2
3
1
2
3
OutdoorIndoor
1
2
3
1
2
3
OutdoorIndoor
1
2
3
1
2
3
OutdoorIndoor
1
2
3
1
2
3
4-1 Between remote controller and indoor unit
If the wire is disconnected between the remote controller and the indoor unit, nothing is displayed on the remote controller
when the POWER button is pressed. The beep sound will also not be heard.
4-2 Phenomenon due to wrong wiring between indoor and outdoor units
Wrong wiring Mode
Disconnection between 1 and 1 or 2
and 2.
COOL
HEAT
COOL
HEAT
COOL
HEAT
COOL
HEAT
COOL
HEAT
COOL
HEAT
Thermostat
Phenomenon
OFF Operation stops.
4-Way valve turns ON. 9 minutes later, check code “P8” appears
ON
on remote controller display.
OFF
Cooling operation. Several minutes later,check code “P8” appears
on remote controller display.
ON Normal operation.
OFF Outdoor unit stops.
Operation stops. 9 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops.
Operation stops. 27 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Outdoor unit stops.
Operation stops. 9 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops.
Operation stops. 27 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Outdoor unit stops.
Operation stops. 9 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops.
Operation stops, 27 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Outdoor unit stops.
Operation stops. 9 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops.
Operation stops. 27 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops.
Operation stops. 9 minutes later, check code “P8” appears on
ON
remote controller display.
OFF Operation stops. 4-way valve turns OFF.
27 minutes later, check code “P8” appears on remote controller
ON
display.
Disconnection between 3 and 3.
COOL
HEAT
Normal operation.
–
OFF Operation stops. 4-way valve turns ON.
Operation stops. 27 minutes later, check code “P8” appears on
ON
remote controller display.
23
Page 24
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.
(Surrounding temperature 68°F)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
FAN MOTOR(MF,1,2,3,4)
4-WAY VALVE
SOLENOID COIL
(21S4)
OUTDOOR COIL
THERMISTOR (RT)
Normal
4.3k"~9.6k"
Abnormal
Open or short
Normal
PUH18 PUH24
PUH30,36
PUH42
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
Normal
PUH18,36,42 PUH24,30
Abnormal
1440" 1190"
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
BYPASS VALVE
SOLENOID COIL
(21R)
Normal
PUH18,24 PUH30,36,42
Abnormal
1500" 1197"
Open or short
Measure the resistance between the terminals using a tester.
CRANKCASE
HEATER (HC)
Normal
PUH18
PUH24,30,36,42
Abnormal
1920" 1340"
Open or short
White — Blue
Blue — Red (Brown)
[PUH30,36,42]
Protector
[PUH18,24]
Red(Brown)
Blue
White
Orange(Yellow)
Red(Brown)
Blue
White
Orange(Yellow)
Protector
Protector
OPEN : 275±9˚F
CLOSE : 187±27˚F
5. HOW TO CHECK THE PARTS
PUH18EK PUH24EK PUH30EK PUH36EK PUH42EK PUH42EK7
PUH24EK1 PUH30EK1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
24
Page 25
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 (PUH18EK)
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
Page 26
OPERATING PROCEDURE PHOTOS
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.
NOTE :
All panels are clasped, and must be removed by shifting up
and down.
(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, shell thermo, 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
Screws
Photo 5
Screws
Photo 6
26
Page 27
Outdoor unit (PUH24EK)
Screws
Panel cover
Compressor protector
Run capacitor
52C relay
Terminal block
Screws
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
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
Page 28
OPERATING PROCEDURE PHOTOS
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.
NOTE :
All panels are clasped, and must be removed by shifting up
and down.
Screws
Photo 4
Screws
Photo 5
Photo 6
28
Page 29
PARTS LIST13
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PUH
18EK
1
2
3
4
5
6
7
8
9
10
1
1
1
1
1
1
1
1
1
1
R01 A08 662
R01 A08 668
R01 A00 675
R01 A00 686
R01 A08 661
R01 A00 658
R01 A08 682
R01 A08 698
R01 A00 641
T7W E03 130
SIDE PANEL
FRONT PANEL
FAN GUARD
BASE ASSEMBLY
SERVICE PANEL
PANEL COVER
REAR PANEL
REAR GUARD
TOP PANEL
MOTOR SUPPORT
STRUCTURAL PARTS
PUH18EK
10
9
8
1
7
2
3
4
29
5 6
Page 30
STRUCTURAL PARTS
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PUH
24EK
1
2
3
4
5
6
7
8
9
10
11
1
2
1
3
1
1
1
1
1
1
1
24EK
1
1
2
1
3
1
1
1
1
1
1
1
R01 A11 662
R01 A00 675
R01 A11 668
R01 A00 655
R01 A10 686
R01 A11 661
R01 A00 658
R01 A11 682
T7W E04 698
T7W E02 641
T7W E04 130
SIDE PANEL
FAN GUARD
FRONT PANEL
PANEL HANDLE
BASE ASSEMBLY
SERVICE PANEL
PANEL COVER
REAR PANEL
REAR GUARD
TOP PANEL
MOTOR SUPPORT
PUH24EK
PUH24EK
1
1
2
3
4
2
11
10
9
8
4
7
5
30
6
Page 31
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PUH
1
2
3
4
5
6
7
8
9
10
11
30,36EK1
30,36EK2
1
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
30,36EK
1
1
2
3
1
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
42EK1
42EK
42EK7
42EK7
1
SIDE PANEL
FRONT PANEL
FAN GUARD
PANEL HANDLE
BASE ASSEMBLY
BASE ASSEMBLY
PANEL COVER
REAR PANEL
SERVICE PANEL
REAR GUARD
TOP PANEL
MOTOR SUPPORT
MOTOR SUPPORT
R01 A14 662
R01 A14 668
R01 A00 675
R01 A00 655
R01 A14 686
R01 AK6 686
R01 A14 658
R01 A14 682
R01 A14 661
T7W E03 698
R01 A14 641
R01 85H 130
T7W E02 130
STRUCTURAL PARTS
PUH30EK PUH36EK PUH42EK PUH42EK7
PUH30EK
1 PUH36EK1 PUH42EK1 PUH42EK71
PUH30EK2 PUH36EK2
1
11
10
9
8
2
7
3
4
4
6
5
31
Page 32
FUNCTIONAL PARTS
PUH18EK
19202122232425262728293031
18
17
32
16
15
14
13
12
11
10
9
1 2 345 6 78
32
Page 33
No.
Parts No. Parts Name Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
PUH
18EK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
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
1
1
1
1
1
1
1
1
T7W 850 763
R01 A00 115
R01 A00 208
T7W A30 208
T97 665 600
T7W 850 236
R01 943 410
R01 951 411
R01 943 413
R01 A08 440
T7W 969 238
R01 590 413
R01 A04 450
T7W 973 507
R01 J01 202
R01 L11 418
R01 272 428
T7W 851 425
T7W 875 242
T7W 875 403
T7W 869 242
R01 V39 490
T7W A30 708
T7W 969 723
R01 576 255
T7W A30 799
T7W 410 239
T7W 850 716
T7W E08 315
R01 377 246
R01 A10 408
R01 30L 097
R01 A00 425
FAN MOTOR
PROPELLER FAN
CONTROL HIGH PRESSURE SWITCH
PROTECT HIGH PRESSURE SWITCH
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
CHARGE PLUG
ACCUMULATOR
OVERCURRENT RELAY
CHARGE PLUG
STRAINER
FUSIBLE PLUG
OUTDOOR COIL THERMISTOR
RESTRICTOR VALVE
BYPASS VALVE
CAPILLARY TUBE
4-WAY VALVE SOLENOID COIL
4-WAY VALVE
BYPASS VALVE SOLENOID COIL
OIL SEPARATOR
CONTACTOR
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
TRANSFORMER
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
NUT
CAPILLARY TUBE
S6V-85FPH
OPEN psiG 363
OPEN psiG 469
RH247NAB
240V 30W
3/8
5/8
MRA98881-90
0.157o0.079o33.5
S-U12 208/230V
30µF 370V
3µF 440V
RED:12.3VAC, 0.06A
BRN:12.3VAC, 0.06A
250V 6A
3P(L1, L2, GR)
3P(1, 2, 3)
0.098o0.024o39.4
MF
63H1
63H2
MC
HC
51C
RT
21S4
21R
52C
C
C1
T
F<O.B>
TB1
O.B
TB3
Part number that is circled is not shown in the illustration.
33
Page 34
FUNCTIONAL PARTS
PUH24EK
PUH24EK
1
31
30
31
30
29
28
27
242526
1
23
22
2
21
20
19
18
17
16
15
14
13
12
11
1 2 53 4 6 7 8 9
10
34
Page 35
Part number that is circled is not shown in the illustration.
No.
Parts No. Parts Name Specifications
1
T7W 851 763
2
R01 A00 115
3
T7W A30 208
4
R01 A00 208
5
T7W A01 413
T97 517 300
6
T97 501 400
7
T7W 851 236
8
R01 943 410
9
R01 951 411
10
R01 A14 490
11
R01 272 428
12
T7W 869 242
13
T7W A31 242
14
T7W 260 403
15
R01 A11 450
16
T7W E14 425
17
R01 993 418
18
R01 943 413
19
T7W 973 507
20
R01 J01 202
21
R01 A12 440
22
T7W A13 708
23
T7W E05 799
24
T7W 973 723
25
R01 653 255
26
T7W 410 239
27
T7W 850 716
28
T7W E08 315
29
R01 377 246
30
T7W A31 408
31
R01 30L 097
32
R01 A00 425
FAN MOTOR
S6V-60FPP
PROPELLER FAN
PROTECT HIGH PRESSURE SWITCH
CONTROL HIGH PRESSURE SWITCH
OPEN psiG 469
OPEN psiG 363
CHARGE PLUG
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
BALL VALVE
NH33NBD
NH33NBDT
240V 43W
3/8
5/8
OIL SEPARATOR
BYPASS VALVE
BYPASS VALVE SOLENOID COIL
4-WAY VALVE SOLENOID COIL
4-WAY VALVE
STRAINER
CAPILLARY TUBE
0.126o0.063o17.3
RESTRICTOR VALVE
CHARGE PLUG
FUSIBLE PLUG
OUTDOOR COIL THERMISTOR
ACCUMULATOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
S-N25EX
RED:12.3VAC, 0.06A
BRN:12.3VAC, 0.06A
40µF 400V
4µF 440V
250V 6A
3P(L1, L2, GR)
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
3P(1, 2, 3)
OUTDOOR HEAT EXCHANGER
NUT
CAPILLARY TUBE
0.098o0.024o39.4
24EK
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
1
Q'ty / set
PUH
24EK
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
1
(Drawing No.)
1
Remarks
Wiring
Diagram
Symbol
MF1, 2
63H2
63H1
MC
MC
HC
21R
21S4
RT
52C
T
C
C1, 2
F<O.B>
TB1
O.B
TB3
35
Page 36
FUNCTIONAL PARTS
No.
Parts No. Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
30EK 30EK1 30EK2 36EK 36EK1 36EK2
1
2
3
4
5
6
2
2
1
1
1
1
2
2
1
1
1
1
2
2
1
1
1
1
PUH
2
2
1
1
1
1
2
2
1
1
1
1
2
2
1
1
1
1
T7W 852 763
R01 A00 115
T7W A30 208
R01 A00 208
T7W E05 413
T97 511 300
T97 502 400
T97 518 300
T97 503 400
VC086DC
OPEN psiG 469
OPEN psiG 363
NH41NAD
NH41NAHT
NH47NAD
NH47NAHT
MF1, 2
63H2
63H1
MC
MC
MC
MC
FAN MOTOR
PROPELLER FAN
PROTECT HIGH PRESSURE SWITCH
CONTROL HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
Parts Name
PUH30EK PUH36EK
PUH30EK
1 PUH36EK1
PUH30EK2 PUH36EK2
24252627282930
23
22
21
31
1
31
20
19
18
17
16
15
14
13
12
11
10
9
8
122303 4 5 6
7
36
Page 37
No.
Parts No. Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
30EK 30EK1 30EK2 36EK 36EK1 36EK2
PUH
Parts Name
7
8
9
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
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
T7W 851 236
R01 670 411
R01 47L 410
R01 42L 450
R01 A14 428
T7W E02 428
T7W 869 242
T7W E01 242
T7W E24 202
T7W A31 242
T7W 875 242
T7W 261 403
T7W 258 403
R01 A14 450
T7W E15 425
T7W E16 425
R01 993 418
R01 943 413
T7W 973 507
T7W E01 440
T7W 867 708
T7W A13 708
T7W E05 799
T7W 867 723
T7W 975 723
R01 653 255
R01 576 255
T7W 410 239
T7W 850 716
T7W E08 315
R01 377 246
T7W E22 408
T7W E23 408
R01 30L 097
R01 A14 490
R01 A00 425
T7W A10 425
240V 43W
3/4
1/2
0.157o0.079o23.6
0.157
o
0.079o17.7
S-K25UR
S-N25EX
50µF 400V
60µF 360V
4µF 440V
3µF 440V
250V 6A
3P(L1, L2, GR)
3P(1, 2, 3)
0.098o0.024o39.4
0.157
o
0.118o7.87
HC
21R
21R
RT
21S4
21S4
52C
52C
T
C
C
C1, 2
C1, 2
F<O.B>
TB1
O.B
TB3
CRANKCASE HEATER
BALL VALVE
BALL VALVE
STRAINER
BYPASS VALVE
BYPASS VALVE
BYPASS VALVE SOLENOID COIL
BYPASS VALVE SOLENOID COIL
OUTDOOR COIL THERMISTOR
4-WAY VALVE SOLENOID COIL
4-WAY VALVE SOLENOID COIL
4-WAY VALVE
4-WAY VALVE
STRAINER
CAPILLARY TUBE
CAPILLARY TUBE
RESTRICTOR VALVE
CHARGE PLUG
FUSIBLE PLUG
ACCUMULATOR
CONTACTOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
FAN MOTOR CAPACITOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
NUT
OIL SEPARATOR
CAPILLARY TUBE
CAPILLARY TUBE
RED:12.3VAC, 0.06A
BRN:12.3VAC, 0.06A
Part numbers that are circled are not shown in the illustration.
37
Page 38
No.
Parts No. Specifications
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
Q'ty / set
42EK 42EK
1
1
2
3
4
5
6
7
8
PUH
T7W 853 763
R01 A00 115
T7W A30 208
R01 A00 208
R01 02L 413
T97 513 300
T97 513 500
T7W 851 236
R01 670 411
PA6N100UG
OPEN psiG 469
OPEN psiG 363
NH569NXA
ZR42K3PFV
240V 43W
3/4
2
2
1
1
1
1
1
1
42EK7
2
2
1
1
1
1
1
1
42EK7
1
2
2
1
1
1
1
1
1
2
2
1
1
1
1
1
1
MF1, 2
63H2
63H1
MC
MC
HC
FAN MOTOR
PROPELLER FAN
PROTECT HIGH PRESSURE SWITCH
CONTROL HIGH PRESSURE SWITCH
CHARGE PLUG
COMPRESSOR
COMPRESSOR
CRANKCASE HEATER
BALL VALVE
Parts Name
FUNCTIONAL PARTS
PUH42EK
PUH42EK
1
PUH42EK7
PUH42EK7
1
262728293031323334
25
24
23
22
35
1
2
34
35
21
20
19
18
17
16
15
14
13
12
11
10
9
8
1
2
3 4 5 6
38
7
Page 39
Part numbers that are circled are not shown in the illustration.
No.
Parts No. Specifications
9
R01 47L 410
10
R01 42L 450
11
R01 86H 201
R01 A14 428
12
T7W E02 428
T7W 869 242
13
T7W E01 242
14
T7W E24 202
15
T7W 875 242
16
T7W 258 403
17
R01 A14 450
R01 591 425
18
T7W E11 425
19
R01 993 418
20
R01 943 413
21
T7W 973 507
22
T7W A34 704
23
T7W E01 440
T7W 868 708
24
T7W A14 708
T7W E07 708
25
T7W E05 799
T7W A34 723
26
T7W E02 723
27
T7W 853 723
28
T7W A34 234
29
R01 653 255
30
T7W 410 239
31
T7W 850 716
T7W E08 315
32
T7W E15 315
33
R01 377 246
R01 V29 408
34
T7W E08 408
35
R01 30L 097
36
R01 A14 490
37
R01 A00 425
38
T7W A10 425
BALL VALVE
STRAINER
DISCHARGE THERMAL SWITCH
BYPASS VALVE
BYPASS VALVE
BYPASS VALVE SOLENOID COIL
BYPASS VALVE SOLENOID COIL
OUTDOOR COIL THERMISTOR
4-WAY VALVE SOLENOID COIL
4-WAY VALVE
STRAINER
CAPILLARY TUBE
CAPILLARY TUBE
RESTRICTOR VALVE
CHARGE PLUG
FUSIBLE PLUG
COMPRESSOR START RELAY
ACCUMULATOR
CONTACTOR
CONTACTOR
CONTACTOR
TRANSFORMER
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR START CAPACITOR
RESISTOR
FAN MOTOR CAPACITOR
FUSE
TERMINAL BLOCK
OUTDOOR CONTROLLER BOARD
OUTDOOR CONTROLLER BOARD
TERMINAL BLOCK
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
NUT
OIL SEPARATOR
CAPILLARY TUBE
CAPILLARY TUBE
Parts Name
1/2
0.157o0.079o17.7
0.157
o
0.079o22.0
AMVL320B
S-K35UR
S-N35EX
MSO-N25KF
RED:12.3VAC, 0.06A
BRN:12.3VAC, 0.06A
65µF 400V
60µF 380V
65µF 400V
15K 4W
4µF 440V
250V 6A
3P(L1, L2, GR)
3P(1, 2, 3)
0.098o0.024o39.4
0.157
o
0.118o7.87
Q'ty / set
42EK 42EK
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
2
1
1
1
1
2
2
1
1
1
PUH
1 42EK7 42EK71
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
2
2
1
1
1
1
2
2
1
1
1
Remarks
(Drawing No.)
Wiring
Diagram
Symbol
26C
21R
21R
RT
21S4
19
52C
52C
51C, 52C
T
C
C
C5
R
C1, 2
F<O.B>
TB1
O.B
O.B
TB3
39
Page 40
TM
cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Dec. 2002 No.OC245 REVISED EDITION-C 17
Distributed in Dec. 2002 No.OC245 REVISED EDITION-B 17
Distributed in May 2001 No.OC245 REVISED EDITION-A 25
Distributed in Mar. 2001 No.OC245 20
New publication, effective Dec. 2002
Specifications subject to change without notice.
Page 41
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Specifications are subject to change without notice.
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