Mitsubishi PUH30EK1, PUH24EK, PUH30EK2, PUH36EK, PUH36EK1 Technical & Service Manual
...
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.
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
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
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
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
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
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
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
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
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
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
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
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
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