Mitsubishi MEE03K194 Service Manual
AIR CONDITIONERS CITY MULTI
Models PUHY-P400YEM-A, P500YEM-A
PUHY-P600YSEM-A, P650YSEM-A, P700YSEM-A, P750YSEM-A
PUHY-400YEM-A, 500YEM-A
PUHY-400YEMK-A, 500YEMK-A
PUHY-400YEMC-A, 500YEMC-A
PUHY-600YSEM-A, 650YSEM-A, 700YSEM-A, 750YSEM-A
PUHY-600YSEMK-A, 650YSEMK-A, 700YSEMK-A, 750YSEMK-A
PUHY-600YSEMC-A, 650YSEMC-A, 700YSEMC-A, 750YSEMC-A
Service Handbook
Service Handbook PUHY-P400YEM-A, P500YEM-A
PUHY-P600YSEM-A, P650YSEM-A, P700YSEM-A, P750YSEM-A
PUHY-400YEM-A, 500YEM-A
PUHY-400YEMK-A, 500YEMK-A
PUHY-400YEMC-A, 500YEMC-A
PUHY-600YSEM-A, 650YSEM-A, 700YSEM-A, 750YSEM-A
PUHY-600YSEMK-A, 650YSEMK-A, 700YSEMK-A, 750YSEMK-A
PUHY-600YSEMC-A, 650YSEMC-A, 700YSEMC-A, 750YSEMC-A
HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO
Issued in January 2004 MEE03K194
Printed in Japan
New publication effective January 2004
Specifications subject to change without notice.
Service Handbook BigY/SuperY Y(S)EM-A(R22/R407C)
Contents
1 PRECAUTIONS FOR DEVICES
THAT USE R407C REFRIGERANT......................................... 1
[1] Storage of Piping Material ............................................. 2
[2] Piping Machining ........................................................... 3
[3] Brazing........................................................................... 4
[4] Airtightness T est............................................................. 5
[5] Vacuuming..................................................................... 5
[6] Charging of Refrigerant ................................................. 6
[7] Dryer .............................................................................. 6
2 COMPONENT OF EQUIPMENT ............................................. 7
[1] Appearance of Components .......................................... 7
[2] Refrigerant Circuit Diagram and Thermal Sensor........ 18
[3] Electrical Wiring Diagram............................................. 22
[4] Standard Operation Data............................................. 24
[5] Function of Dip SW and Rotary SW ............................ 36
3 TEST RUN ............................................................................. 42
[1] Before Test Run ........................................................... 42
[2] Test Run Method.......................................................... 48
4 GROUPING REGISTRATION OF INDOOR UNITS WITH
M-NETREMOTE CONTROLLER........................................... 49
5 CONTROL.............................................................................. 55
[1] Control of Outdoor Unit................................................ 55
[2] Operation Flow Chart................................................. 106
[3] List of Major Component Functions ........................... 111
[4] Resistance of Temperature Sensor............................ 115
6 REFRIGERANT AMOUNT ADJUSTMENT ......................... 116
[1] Operating Characteristics and Refrigerant Amount ... 116
[2] Adjustment and Judgement of Refrigerant Amount... 116
[3] Refrigerant Volume Adjustment Mode Operation....... 119
7 TROUBLESHOOTING......................................................... 125
[1] Principal Parts............................................................ 125
[2] Self-diagnosis and Countermeasures Depending
on the Check Code Displayed ................................... 150
177
[3] LED Monitor Display ..................................................
8
.............................. 199
[1]
........................................................... 199
[2] ......... 200
[3]
.......................................................... 200
[4] .......... 201
9 ...... 202
PREPARATION, REPAIRS AND REFRIGERANT
REFILLING WHEN REPAIRING LEAKS
Location of leaks: Extension piping or indoor units
(when cooling)
Location of leaks: Outdoor unit (Cooling mode)
Location of leaks: Extension piping or indoor units
(Heating mode)
Location of leaks: Outdoor unit (when heating)
CHECK THE COMPOSITION OF THE REFRIGERANT
Safety precautions
This equipment may not be applicable to
EN61000-3-2: 1995 and EN61000-3-3: 1995.
Please report to or take consent by the supply
authority before connection to the system.
Symbols used in the text
Warning:
Describes precautions that should be observed to
prevent danger of injury or death to the user .
Caution:
Describes precautions that should be observed to
prevent damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates important instructions must be followed.
: Indicates a part which must be grounded.
: Beware of electric shock (This symbol is displayed on the
main unit label.) <Color: Yellow>
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• Use the specified cab les f or wiring. Make the connections
securely so that the outside force of the cable is not
applied to the terminals.
- Inadequate connection and fastening may generate heat and
cause a fire.
• Have all electric work done by a licensed electrician
according to “Electric Facility Engineering Standard” and
“Interior Wire Regulations”and the instructions given in
this manual and always use a dedicated circuit.
- If the power source capacity is inadequate or electric work is
performed improperly, electric shock and fire may result.
• Securely install the cover of control box and the panel.
- If the cover and panel are not installed properly, dust or water
may enter the outdoor unit and fire or electric shock may
result.
• After completing service work, make sure that refrigerant
gas is not leaking.
- If the refrigerant gas leaks and is exposed to a fan heater,
stove, oven, or other heat source, it may generate noxious
gases.
• Do not reconstruct or change the settings of the protection
devices.
- If the pressure switch, thermal switch, or other protection
device is shorted and operated forcibly, or par ts other than
those specified by Mitsubishi Electric are used, fire or
explosion may result.
Before installing the unit, make sure you read all
the “Safety precautions”.
The “Saftey precautions” provide very important
points regarding safety. Make sure you follow
them.
This equipment may have an adverse effect on
equipment on the same electrical supply system.
Before installation and electric work
-1-
Caution
Do not use the existing refrigerant piping.
• The old refrigerant and refrigerator oil in the existing
piping contains a large amount of chlorine which may
cause the refrigerator oil of the new unit to deteriorate.
Use refrigerant piping made of phosphorus deoxidized copper and copper alloy seamless pipes and
tubes”. In addition, be sure that the inner and outer
surfaces of the pipes are clean and free of hazardous
sulphur, oxides, dust/dirt, shaving particles, oils,
moisture, or any other contaminant.
• Contaminants on the inside of the refrigerant piping
may cause the refrigerant residual oil to deteriorate.
Store the piping to be used during installation indoors
and keep both ends of the piping sealed until just
before brazing. (Store elbows and other joints in a
plastic bag.)
• If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may
result.
Use ester oil, ether oil or alkylbenzene (small
amount) as the refrigerator oil to coat flares and
flange connections.
• The refrigerator oil will degrade if it is mixed with a
large amount of mineral oil.
Use liquid refrigerant to seal the system.
• If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change
and performance may drop.
Do not use a refrigerant other than that specified.
• If another refrigerant is used, the chlorine
in the
refrigerant may cause the refrigerator oil to
Use a vacuum pump with a reverse flow check valve.
• The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate.
Do not use the following tools that have been used
with conventional refrigerants.
(Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base,
vacuum gauge, refrigerant recovery equipment)
• If the conventional refrigerant and refrigerator oil are
mixed in the R407C, the refrigerant may deteriorated.
• If water is mixed in the R407C, the refrigerator oil
may deteriorate.
• Since R407C does not contain any chlorine, gas
leak detectors for conventional refrigerants will not
react to it.
Do not use a charging cylinder.
• Using a charging cylinder may cause the refrigerant
to deteriorate.
Be especially careful when managing tools.
• If dust, dirt, or water that gets in the refrigerant cycle,
may cause the refrigerant to deteriorate.
If the refrigerant leaks, recover the refrigerant in the
refrigerant cycle, then recharge the cycle with the
specified amount of the liquid refrigerant indicated
on the air conditioner.
• Since R407C is a nonazeotropic refrigerant, if additionally charged when the refrigerant leaked, the composition of the refrigerant in the refrigerant cycle will
change and result in a drop in performance or abnor-
mal stopping.
deteriorate.
¡
PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT
-2-
[1] Storage of Piping Material
(1) Storage location
Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse)
Storing them outdoors may cause dirt, waste, or water to infiltrate.
(2) Pipe sealing before storage
Both ends of the pipes should be sealed until immediately before brazing.
Wrap elbows and T’s in plastic bags for storage.
✻
The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water
infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure. Piping materials must be
stored with more care than with the conventional refrigerant pipes.
OK
OK
NG
NG
-3-
[2] Piping Machining
Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.
Use only the necessary minimum quantity of oil .
Reason:
1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside.
Notes:
• Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure.
• Do not use oils other than ester oil, ether oil or alkylbenzene
-4-
[3] Brazing
No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt,
etc.) does not enter the refrigerant circuit.
Example : Inner state of brazed section
When non-oxide brazing was not used When non-oxide brazing was used
Items to be strictly observed :
1. Do not conduct refrigerant piping work outdoors on a rainy day.
2. Apply non-oxide brazing.
3. Use a brazing material (BCuP-3) which requires no flux when brazing between copper pipes or between a copper pipe
and copper coupling.
4. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends of them.
Reasons :
1. The new refrigerant oil is 10 times more hygroscopic than the conventional oil. The probability of a machine failure if
water infiltrates is higher than with conventional refrigerant oil.
2. A flux generally contains chlorine. A residual flux in the refrigerant circuit may generate sludge.
Note :
• Commercially available antioxidants may have adverse effects on the equipment due to its residue, etc. When
applying non-oxide brazing, use oxygen free nitrogen (OFN).
-5-
[4] Airtightness Tes
No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C
leakage.
Halide torch R22 leakage detector
Items to be strictly observed :
1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness,
temperature variations into account.
taking
2. When investigating leakage locations using a refrigerant, be sure to use R407C.
3. Ensure that R407C is in a liquid state when charging.
Reasons :
1. Use of oxygen as the pressurized gas may cause an explosion.
2. Charging with R407C gas will lead the composition of the remaining refrigerant in the cylinder to change and
refrigerant can then not be used.
this
Note :
• A leakage detector for R407C is sold commercially and it should be purchased.
[5] Vacuuming
1. Vacuum pump with check valve
A vacuum pump with a check v alve is required to prevent the vacuum pump oil from flowing back into the
circuit when the vacuum pump power is turned off (power failure).refrigerant
It is also possible to attach a check valve to the actual vacuum pump afterwards.
2. Standard degree of vacuum for the vacuum pump
Use a pump which reaches 0.5 Torr (500 MICRON) or below after 5 minutes of operation.
In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil. If
vacuum pump is not properly maintained, the degree of vacuum may be too low.
the
3. Required accuracy of the vacuum gauge
Use a vacuum gauge that can measure up to 5 Torr. Do not use a general gauge manifold since it cannot
vacuum of 5 Torr.
measure a
4. Evacuating time
• Evacuate the equipment for 1 hour after –755 mmHg (5 Torr) has been reached.
• After envacuating, leave the equipment for 1 hour and make sure that the vacuum is not lost.
5. Operating procedure when the vacuum pump is stopped
In order to prevent a backflow of the vacuum pump oil, open the relief valve on the vacuum pump side or loosen
charge hose to drawn in air before stopping operation.
the
The same operating procedure should be used when using a vacuum pump with a check valve.
NG
NG
-6-
Cylin-
der
Cylin-
der
Valve
Valve
Liquid
Liquid
[6] Charging of Refrigerant
R407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant.
For a cylinder with a syphon attached For a cylinder without a syphon attached
Cylinder color identification R407C-Gray Charged with liquid refrigerant
R410A-Pink
Reasons :
1. R407C is a mixture of 3 refrigerants, each with a different evaporation temperature. Therefore, if the equipment
charged with R407C gas, then the refrigerant whose evapor ation temperature is closest to the outside temper ature
is
charged first while the rest of refrigerants remain in the cylinder.
Note :
• In the case of a cylinder with a syphon, liquid R407C is charged without turning the cylinder up side down. Chec k the
type of cylinder before charging.
[7] Dryer
1. Replace the dryer when the refrigerant circuit is opened (Ex. Change the compressor, full gas leakage). Be sure to
replace the dryer with a CITY MULTI Series Y (For use with R407C).
If any other product is used, the unit will be damaged.
2. Opening the refrigerant circuit after changing to a new dryer is less than 1 hour . The replacement of the dryer
be the last operation performed.
should
is
-7-
[1] Appearance of Components
Heat Exchanger
Sub-cool Coil
Heat Exchanger of CS circuit
(PUHY-P-YEM-A only)
Solenoid Valv e
(SV5b)
Solenoid Valv e
(SV7)
(PUHY-P-YEM-A only)
Solenoid Valv e
(SV8)
(PUHY-P-YEM-A only)
Four-way Valve
(21S4b)
Four-way Valve
(21S4a)
Heat ExchangerAmbient temperature Sensor
Accumlator
Constant Capacity Compressor
(No. 2 Compressor)
Crank Case HeaterOil Equalization Pipe
Variable Capacity
Compressor
(No. 1 Compressor)
Oil Separator
1 Variable capacity unit
Rear
™
COMPONENT OF EQUIPMENT
-8-
Heat Exchanger
Sub-cool CoilAccumlator
Solenoid valve (SV3, PUHN-P-YEM-A only)
Ambient temperature Sensor
Accumlator
Controller box
Oil balance pipe
Crank Case Heater
Constant capacity compressor
(No. 3 compressor)
Liquid ball valve
Four-way valve
Gas ball valve
Service check-point
(right; high pressure,
left; low pressure)
2 Constant capacity unit
Rear
Solenoid valve (SV2, PUHN-P-YEM-A only)
Heat exchanger
-9-
Controller Box
RELAY board
FANCON board
(for MF3)
INV boardMAIN board
Choke coil (L2)
Inteligent Power
Module (IPM)
G/A board
Y-C board
SNB board
Diode stack (DS)
Magnetic contactor (52C2)
Magnetic contactor (52C1)Magnetic contactor
(52F)
Overload relay
(51C2)
FANCON board
(for MF2)
Capacitor (C2, C3)
(Smoothing capacitor)
Noise filter
(NF)
-10-
CNTR CNFC1 CNS1 CNS2 CN40 CN41 CNVCC3
Power Source
for control
1-2 30V
1-3 30V
4-6 12V
5-6 5V
CNVCC4
Power source
for control(5V)
CN51
Indication distance
3-4 Compressor
ON/OFF
3-5 T roub le
CNRS3
Serial transmission to
INV board
CN3D
CN3S
CN3N
LD1
Service LED
SW1SWU1SWU2SW2SW3SW4
CN20
Power supply
3 L1
1 N
MAIN board
-11-
CNAC2
Power Source
1 L2
3 N
5 G
CNFAN
Control
for MF1
CN52C
Control for
52C
CNR
CNVDC
1 - 4
DC-560V
CN15V2
Power supply
for IPM control
CNVCC4
Power supply (5V)
CNL2
Choke coil
CNDR2
Out put to
G/A board
CNVCC2
Power supply
1-2 30V, 1-3 30V
4-6 12V, 5-6 5V
CNTH
CNACCTCNRS2
Serial transmission
to MAIN board
SW1
INV board
-12-
FANCON board
G/A board
CNFAN
CNFC2
CNPOW
CNE CNDC1
CN15V1
CNDR1
CNIPM1
-13-
Y-C board
SNB board
-14-
RELAY board
CNRT2
CNCH
CN52C2
CN52F
CN51C2
CNOUT2
-15-
• Constant capacity unit
Transformer
Magnetic contactor
(52C)
Thermal overload relay
(51C)
Fuses (F1, F2)
Thyristor module
(SCRM)
FANCON board
Noise Filter (NF)
Terminal block TB3
transmission
Terminal block TB1
powersource
Controller Box
Control board
-16-
CONT board
CNTR
SWU2 SWU1 SW3 SW2
CNS1
M-NET
transmission
CNFC1
CN20
Power supply
1 N
3 L1
-17-
FANCON board
CNWCNV
CNU CNFC2
-18-
BV3
TH7
TH8
TH5
TH6
CJ1
O/S
63HS
TH11
HEXF1
HEXF2
HEXB2
HEXB1
CJ2
CV1
SV4
SV1
CP1
TH4
TH3
CP4
CP7
BV2
BV1
TH12
Comp2
Comp1
CV2
SA
MA
CP3a
SV6
LEV1
63H1
63H2
21S4a
21S4b
SV5b
SV22 SV32
ST5
ST6
CP3b
ST3
ST4
ST9
ST8
TH9a
ST2
ST1
CJ3
ST7
TH9b
TH2
Drier
CP2
TH10c
63LS
CV3
CP5
TH10b
TH10a
SLEV
✻
✻
SV8
SV7
❇ There are SV22,SV32 only for PUHY-P500.
[2]
Refrigerant Circit Diagram and Thermal Sensor
PUHY-P400, 500YEM-A
-19-
CP1
CP5
ST6
SV1
SLEV
CP4
No.1
Comp.
TH8
HEX2a
TH5
SV5b
HEX1a
TH6
HEX2b
HEX1b
21S4b
21S4a
CJ1
63HS
ST5
SV4
SV6
TH11
63H1
CV1
CV3
O/S
CJ2
BV1
ST1
MASA
TH2
CP2
ST2
BV2
BV3
ST8
ST9
TH3
ST3
TH7
ST7
TH9
TH10a
TH10b
LEV1
SCC
TH4
ST4
CJ3
63H2
CV2
CP3a
SV22
SV32
TH12
CP3b
No.2
Comp.
❇ There are SV22,SV32 only for PUHY-500.
❇
PUHY-400, 500YEM(K,C)-A
-20-
Distributor
BV3
TH6
TH7
TH8
TH5
CJ1
O/S
63HS
TH11
HEXF1HEXB1
CJ2
CV1
SV4
SV1
SV7
SV8
CP1
TH4
TH3
CP4
BV2
BV1
TH12
Comp2
Comp1
HEXF2
HEXB2
CV2
SA
MA
CP3a
SV6
LEV1
63H1
63H2
21S4a
21S4b
SV5b
SV22SV32
ST5
ST6
CP3b
ST3
ST4
ST9
ST8
TH9a
ST2
ST1
CJ3
ST7
TH9b
TH2
Drier
CP2
TH10c
63LS
CV3
CP5
TH10b
TH10a
Distributor
TH7
TH5
O/S
TH11
CJ2
SV4
SV1
CP1
TH4
TH3
BV2
BV1
Comp1
HEX2
HEX1
SV5b
SA
MA
CP3
LEV1
63H
21S4
CJ1
CV1
BV3
ST1
ST2
ST5
ST6
ST9
ST3
ST4
ST8
TH10a
CV2
CP5
LEV2
TH6
63LS
ST10
ST7TH9
TH8
TH10b
SV3
SV2
SLEV
✻
PUHY-P600, 650, 700, 750YSEM-A
❇ There are SV22,SV32 only for PUHY-P700, 750.
PUHN-P200,250
PUHY-P400,500
Indoor unit
-21-
21S4b
HEX1b
TH6
TH10a
HEX2b
21S4a
CJ1
63HS
ST5
SV4
SV6
TH10b
O/S
ST6
CP1
SV1
HEX1a
HEX2a
SV5b
TH5
CV1
63H1
TH11
Comp1
Comp2
TH8
ST10
CP4
SLEV
TH4
ST4
ST8
CJ3
63H2
CV2
CP3a
TH12
SV22 SV32
CP3b
ST9
SA
MA
TH3
ST3
TH9
LEV1
ST7
TH7
TH2
CP2
CJ2
SCC
SCC
ST1
BV1
Distributer (Gas)
Indoor unit
BV2
ST2
BV3
BV1
ST1
CJ2
63LS
MA
SA
CP3
ST8
ST4
TH4
ST3
TH3
CP1
SV1
ST6
CV1
O/S
CJ1
ST5
SV4
21S4
TH11
63H
Comp1
TH10a
TH6
HEX1
HEX2
TH5
TH8
ST10
TH9
LEV1
ST7
TH7
CV2
BV2
SV5b
CP5
LEV2
ST2
TH10b
BV3
Oil balance
pipe
Distributer (Liquid)
ST9
PUHY-400,500
PUHN-200,250
❇
❇ There are SV22,SV32 only for PUHY-700, 750.
CV3
CP5
PUHY-600, 650, 700, 750YSEM(K,C)-A
-22-
[3]
Electrical Wiring Diagram
PUHY-(P)400, 500YEM(K,C)-A
Fan motor
(Heat exchanger)
Fan motor
(Heat exchanger)
TH12
MC2
PUHY-(P)500
63H2
SV22
SV32
SLEV
TH12
63H2
MC2
63HS
MC1
PUHY-(P)400
TH4
SV1
63H1
Box
Controller
Inverter
Oil separater
TB1A
TB3 TB7
MAIN board
INV board
RELAY
R7
L2
board
FANCON
board
FANCON
board
F3
52C2
51C2
52F
F5
F6
52C1
TB1B
DCL
SNB
board
R2
+
C2-C3
+
-
R3
R1
R5
THHS
C1
ACCT
-U
MF1
NF
G/A board
IPM
ACCT
-W
DS
ZNR4
CN05CN04
(for MF3)
(for MF2)
TH2
R6
TH10a
TH8
ACCUMULATOR
TH3
21S4b
SV5b
SV4
SV6
LEV1
TH5
TH6
21S4a
❇
3
SV8
SV7 TH10b
TH9a
DEMAND
❇
2
❇
3
❇
3
❇
2
MODE
CN3D
HEATAuto
Changeover
Normal
COLL
OFF
OFFONOFF
ON
1-2 1-3
ON
MODE
CN3N
CN3S
1-3
1-2
1-2 DEMAND
NIGHT
SNOW
Refer to the service handbook
about the switch operations.
as connection with
PUHN-(P)200/250
SW4-6
ON
OFF
132
CN3N
(3P)
132
CN3S
(3P)
1234
CN13
(4P)
TH10bTH10a
CN1212(2P)
TH9b
LEV1
TH8
SV6
❇
1
50/60Hz
3N~380/400/415V
Power source
63H1
T10
T9
SV32
SV22
FB4
X08
X04
CH11
CH3
CH2
SSR
43
21
123
CN35
(3P)
M2
M1
S
M2
M1
CN34
(6P)
65432
1
1
2
CN38
(3P)
X05
X07
X06
12345
6
(6P)
CN36
X09
12345
6
(6P)
CN37
(3P)
CN32
TB7
TB3
X01
X02
(3P)
CNS2
2
(2P)
CNS1
13 1
12232
1
(3P)
CN33
3
L1
L2L3N
PE
PE
L1
TB1A
L2L3N
L1NFL2L3N
123
4
B
A
(4P)
CNAC3
BOX BODY
BOX BODY
Terminal
Block
Noise
Filter
High pressure
switch
detection
Crank case heater
(Compressor)
Indoor and
Connect to
remote
controller
8A F
600VACF6600VAC
8A F
F5
SV5b
21S4a
SV4
SV1
21S4b
X10
L3L2L1
EARTH
SNB board
X12
X11
Relay board
TH2TH7TH5TH6TH3TH4
63LS
63HS
TH11
TH9aTH10c TH12
SLEV
52C1
CH12
52F
52C2
51C2
CN51C2
(3P)
CN52C2
(5P)
CN52F
(3P)
CNCH
(3P)
CNRT2
(5P)
CNOUT2
(4P)
CNRT1
(5P)
CNOUT1
(6P)
MF1
6
5
FB3
1
2
3
CNX10
(3P)
Motor
(Compressor)
52F
1
2
3
4
5
6
L1 L2 L3
(6P)
CNFC1
F01 250VAC 6.3A F
F03 250VAC 6.3A F
F02 250VAC 6.3A F
N
CNPOW
(5P)
CNFC2
(6P)
12345
6
12345
6
V
W
N
U
MF2
12345
123
4
5123 4
Fan control board
(Fancon board)
(5P)
CNFAN
CN04
F01 250VAC 6.3A F
F03 250VAC 6.3A F
F02 250VAC 6.3A F
N
CNPOW
(5P)
CNFC2
(6P)
12345
6
V
W
N
U
MF3
12345
123
4
5123 4
Fan control board
(Fancon board)
L1 L2 L3
(5P)
CNFAN
FB5
Black
White
Red
Controller Box
Inverter
circuit
circuit
detection
(MAIN board)
Control circuit board
5:Trouble
4:Compressor ON/OFF
SNOW
NIGHT
(INV board)
Power circuit board
Gate amp board
(G/A board)
Black
White
Red
Motor
(Compressor)
Diode
stack
Terminal
Block
BOX BODY
BOX BODY
BOX BODY
X10
2A F
1A F
2A F
(3P)
CN20
DS
CNTR1
123
T01
F3
250VAC
CNTR
(3P)
L1 L2 L3 N
L1
TB1B
L2L3NN
L3
L2
L1
Red
White
Black
12345
CNLV2
(5P)
123
(3P)
CN03
1234
CN05
(4P)
CNE
(2P)
21
(14P)
CN15V2
(7P)
CNRS3
(6P)
CNVCC2
(6P)
CNVCC3
(2P)
CNVCC4
(7P)
CNRS2
X01
32165
1234567121432
9876432112
3
V
MC1
W
U
(4P)
CNVDC
(3P)
CN52C
(5P)
CNAC2
(2P)
CNVCC4
250VAC
F01
6
5
1234567121432
CNDC1
(4P)
1234
12345987612345
CNDR2
(9P)
14131110 12
121011 1314
543216789 54321 6789
5
123
4
UVW
P
N
IPM
CNDR1
(9P)
CN15V1
(14P)
4
CNACCT
(4P)
543
1
21678
3
12 1 2 3 1 2 3 1234 5
2
34251
1
CN3D
(3P)
32
CN51
(5P)
12V
F1
250VAC
123
Black
White
Red
123
~~-~
+
ZNR4
C1
R5
R1
52C1
+
+
DCL
C2
C3
R2
R3
CN02
(8P)
CN01
(2P)
CNH
(3P)
CNL
(3P)
CNLV1
(5P)
CN06CN0912(2P)
12
(2P)
3
(2P)
CN07
21
U
W
MC2
V
1
3
5
6
4
2
6
5
4
3
2
1
52C2
51C2
-W
ACCT
-U
ACCT
12345
12345
6
12345
412
3
X02
X03
3
2
1
1
2
3
5
4
1
2
3
1
2
3
52C2
X01
9695
A2A1
1314
A1A2
CNFAN
(3P)
321
X02
L2
R7
THHS
R6
(2P)
CN30V
(2P)
CNL2
12 123 12 12
(2P)
CNTH
(3P)
CNR
BOX BODY
FB2FB1
T1
T2
T3
T4
T5
T6
T8
BOX BODY
63H2
T7
8765432
1
A B
X12
SV7
SV8
X11
CN06
Y-C
board
CN05
FLAG8
FLAG7
FLAG6
FLAG5
FLAG4
FLAG3
FLAG2
FLAG1
sor run
Compres-
52FSV6SV4
SV1
21S4a
FLAG8FLAG7FLAG6
FLAG5FLAG4FLAG3FLAG2
ON:1
OFF:0
<Operation of self-diagnosis switch(SW1)and LED display>
FLAG8 always
lights at
microcomputer
power ON
Always
lighting
52C2
Display at LED lighting (blinking) Remarks SW1 operation
During
FLAG1
Display
Check display1
(Blinking)
Relay output
display
(Lighting)
<LED display>
LD1
Display the address and error code by turns
❇
Please refer to the service handbook about other switch settings of LED display.
12345678910
ON:1
OFF:0
(at factory shipment)
12345678910
SV22/32
❇
1
52C1
CH2,3
<Controller box internal layout>
(Upside)
(Front)
(Underside)
21S4b
SV5b
SV5b is closed
when FLAG3 is
turned ON.
<Difference of appliance>
<Unit internal layout>
Name
Appliance
"
❇
1" is not existedPUHY-(P)400YEM
PUHY-(P)500YEM
All exists
PUHY-(P)400YEM
PUHY-(P)500YEM
"
❇
1","
❇
2" and "
❇
3" are not existed
"
❇
2" and "
❇
3" are not existed
NOTE:Mark
indicates terminal bed
connector
board insertion connector
TerminalT1~10
Intelligent power moduleIPM
Choke coil(Transmission)L2
High pressure switch63H1,2
63LS Low pressure sensor
High pressure sensor63HS
Electronic expansion valve(SC coil)
LEV1
FB1~5 Ferrite core
Earth terminal
X1,2,4~12 Aux. relay
SSR
CH2,3
Solid state relay
Cord heater
CH11,12
Crank case heater(Compressor)
LD
Accumulator liquid level detect
(Inverter main circuit)
Electronic expansion valve(Oil return)
SLEV
4-way valve21S4a,4b
Fan motor (Radiator panel)MF1
52F
Magnetic contactor(Fan motor)
Overload relay51C2
Magnetic contactor52C2
VaristorZNR4
Current SensorACCT-U,W
Symbol
Name
Radiator panel temp. detect
THHS
(Heat exchanger capacity control)
Compressor shell temp.
TH10c
Solenoid valve
SV5,6,7,8
TH10b
Gas pipe temp.
(Hex outlet)
TH10a
4,6
SV1,22,32
Solenoid valve
Composition sensing temp.
TH9b
LEV1 temp.detect(Enttance area)
TH9a
(Bypass exit area)
TH8
SC coil temp.detect
TH7
(Liquid exit area)
SC coil temp.detect
OA temp. detectTH6
52C1
Magnetic contactor
Pipe temp. detect(Hex outlet)
TH5
TH4
temp. detect
Upper
TH3
Accumurator liquid
Lower
DCL
(Power factor improvement)
Saturation evapo. temp. detect
TH2
DC reactor
Discharge pipe temp. detect
ThermistorTH11,12
Symbol
Name
<Symbol explanation>
<ELECTRICAL WIRING DIAGRAM>
TH9b
TH7
63LS
❇
3
TH11
TH10c
❇
3
X12X11
T01
❇
2
-23-
PUHN-(P)200, 250YEM(K,C)-A
TERMINAL
T1,T2
T1
T2
Box body
Box body
123
N
Fan motor
(Heat exchanger)
V
CN04
MF
W
U
CNMF
Model 200:24A
Model 250:27A
<Difference of appliance>
Appliance
Difference
PUHN-200·250YEM(K,C)-A(-BS,-BF)
"
✻
1
" is not existed
PUHN-P200·250YEM-A(-BS,-BF)
ALL exists
L2L1L3
PE
5
G
K
G
K
G
K
G
K
G
K
G
K
WG2
UK1
UG2
SCRM
UG1
UK2
WK1
WK2WWG1
VK1
VG1
VK2
VG2
V
U
L1
Red
L2
F2
L1
L3
L2
F1
600VAC
8A F
L3
4
123
600VAC
8A F
Black
Red
UG2
4
White
Black
5
UG1
UK1
UK2
5
6
5432112345
321
WG2
Fan control board
(Fancon board)
WK2
WG1
WK1
VG2
VK2
VG1
VK1
and ON for Model 250.
SW3-10 are OFF for Model 200.
12
1421 323 241 123 678 12 1 2 3 12345 12
1
345
23456
CN09
(2P)
CN06
(2P)
1
1
3
CN20
(3P)
2
CNFC1
(6P)
2
3
2
1
CNS1
(2P)
123
12
CN38
(3P)
X01
N
N
L3
Power source
3N~380/400/415V
50/60Hz
Control circuit board
(CONT board)
LEV2
L2
F1
250VAC
6.3A F
63H
TH11TH7TH8TH5
TH6
TH3TH4TH9
123
Black
White
Red
63LS
L1
LEV1
PE
TB1
White
Red
Black
Blue
Inverter
unit
Box body
TB3
M1
M2
T01
F3
250VAC
1A F
White
U
W
MC1
V
Motor (Compressor)
Red
Black
CN05
(4P)
CN03
(3P)
CN02
(8P)
CN01
(2P)
CNL
(3P)
CN33
(6P)
CNLV1
(5P)
CNTR
(2P)
CNLV2
(6P)
Controller Box
CNW
(5P)
CNV
(5P)
CNFC2
(6P)
CNU
(5P)
1
3
5
6
4
2
6
5
4
3
2
1
CN12
TH10b
12
(2P)
TH10a
12332154321
6
654
S
X02
SV1
51C
CN46
(3P)
CNCH11
(3P)
CH11
52C1
CN52C1
(5P)
X06
X07
52C151C1
13 14
A1
A2
Detection
circuit
Detection
circuit
ZNR01
L1L2L3
L1L2L3
CH3
CH2
X05
X04
SSR01
12
34
321
12345
6
(6P)
CN34
(3P)
CN35
3
CN39
(3P)
2
1
X03
SV3
SV2
SV4
SV
5b
21
S4
52
C1
NF
Noise
Filter
THERMISTER
SV2,SV3
SOLENOID VALVE
21S4
MF
MC1
52C1
SSR
CH11
CH2,CH3
ZNR01
SV5b
63H
63LS
SV1,SV4
TH11
TH3
TH4
TH5
TH6
TH7
TH8
TH10a
TH10b
TH9
X01~X07
SW2,SW3
SWU1,2
TB1
LEV1
LEV2
THERMISTER
F3
THERMISTER
THERMISTER
THERMISTER
ELECTRONIC EXPANSION VALVE
RELAY
SWITCH
SWITCH
POWER SOURCE TERMINAL BLOCK
EARTH TERMINAL
THERMISTER
THERMISTER
THERMISTER
LOW SIDE PRESSURE SENSOR
HIGH PRESSURE CUT OUT SWITCH
SOLENOID VALVE
4-WAY VALVE
CORD HEATER
CRANK CASE HEATER(COMPRESSOR)
FAN MOTOR(HEAT EXCHANGER)
ELECTRIC MOTOR OF COMPRESSOR
OVER CURRENT RELAY
MAGNET CONTACTOR
FUSE(1A)
SOLID STATE RELAY
VARISTOR
THERMISTER
ELECTRONIC EXPANSION VALVE
THERMISTER
NAME
SYMBOL
F1,F2
FUSE(8A)
F1
FUSE(6.3A) <CONT BOARD>
SYMBOL
NAME
SOLENOID VALVE
51C1
✻
1
✻
1
-24-
Discharge (TH11/TH12)
Heat exchanger outlet (TH5)
Inlet
Accumulator
Outlet
Suction (Comp) (No.1/No.2)
Low pressure saturation
temperature (TH2)
Upper (TH4)
Liquid level
Lower (TH3)
Shell bottom (Comp No.1/No.2)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9a)
CS circuit (TH9b)
Circulating configuration (αOC)
LEV inlet
Heat exchanger outlet
27.0/19.0 27.0/19.0
35.0/- 35.0/-
5
5
5
55 55
22.4 27.9
5
5
5
5
7
3
27.6/26.2/25.2 34.6/32.8/31.7
164 179
200 344
2.11/0.43 2.11/0.42
92/102 97/102
42
4
6
6/12 12/12
1
30
1
60/51 65/50
27
10 11
2
16
0.23
26
12
125 125 100 63 32 125 125 125 100 32
10 10 10 10 10 10 10 10 10 10
Hi Hi Hi Hi Hi Hi Hi Hi Hi Hi
410 410 360 360 340 410 410 410 360 280
DB/WB
Set
-
m
-
kg
A
V
Pulse
°C
Outdoor
unit
Indoor
unit
Outdoor unit
Items
Ambient temp.
Indoor unit
Piping
Condition
Indoor
Outdoor
Quantity
Quantity in operation
Model
Main pipe
Branch pipe
Total piping length
Outdoor unit
Sectional temperature
Pressure
LEV opening
Indoor unit fan notch
Refrigerant volume
Total current
Voltage
Indoor unit
SC (LEV1)
Oil return (SLEV)
High pressure/Low pressure
(after O/S) (before MA)
380 ~ 415 380 ~ 415
PUHY-P400YEM-A PUHY-P500YEM-A
[4] Standard Operation Data
1 Cooling operation
MPa
-25-
Discharge (TH11/TH12)
Heat exchanger outlet (TH5)
Accumulator
Inlet
Outlet
Suction (Comp)
Low pressure saturation
temperature (TH2)
Liquid level
Upper (TH4)
Lower (TH3)
Shell bottom (Comp)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9a)
CS circuit (TH9b)
Circulating configuration (αOC)
Discharge temperature (TH11)
Liquid level
Upper (TH4)
Lower (TH3)
Shell bottom (Comp)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9)
LEV inlet
Heat exchanger outlet
Variable
capacity
unit
Constant
capacity
unit
Indoor unit
Outdoor unit
Items
Ambient temp.
Indoor unit
Piping
Condition
Indoor
Outdoor
Quantity
Quantity in operation
Model
Main pipe
Branch pipe
Total piping length
-
Variable
capacity unit
Constant
capacity unit
DB/WB
Set
-
m
-
kg
A
V
Pulse
MPa
°C
Outdoor
unit
Sectional temperature
Pres-
sure
LEV opening
Indoor unit fan notch
Refrigerant volume
Current
Voltage
Indoor unit
SC (LEV1)
Oil return (SLEV)
SC (LEV1)
Liquid pipe (LEV2)
High pressure/Low pressure
(after O/S) (before Main ACC)
PUHY-P600YSEM-A PUHY-P700YSEM-A
PUHY-P400YEM-A PUHY-P500YEM-A
PUHN-P200YEM-A PUHN-P200YEM-A
27/19.0
35/-
5
5
200/200/125/50/25 250/200/125/100/25
5
5
30
Hi
28.9 34.9
41.5/39.5/38.0 48.3/45.9/44.2
380 ~ 415
360/360/410/360/270 410/360/410/360/270
164 179
5
7
1
1
1
200 344
116
60
2.11/0.45 2.11/0.44
92/102 97/102
42
6
8
7/13 13/13
2
30
2
60/51 65/50
27
11 10
3
16
0.23
102
30
4
50
27
13
5
26
12
Variable
capacity
Constant
capacity
-26-
Discharge (TH11/TH12)
Heat exchanger outlet (TH5)
Accumulator
Inlet
Outlet
Suction (Comp)
Low pressure saturation
temperature (TH2)
Liquid level
Upper (TH4)
Lower (TH3)
Shell bottom (Comp)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9a)
CS circuit (TH9b)
Circulating configuration (αOC)
Discharge temperature (TH11)
Liquid level
Upper (TH4)
Lower (TH3)
Shell bottom (Comp)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9)
LEV inlet
Heat exchanger outlet
27/19.0
35/-
5
5
250/200/125/50/25 250/250/125/100/25
5
5
30
Hi
31.9 36.9
44.7/42.5/40.9 51.5/48.9/47.1
380 ~ 415
410/360/410/360/270 410/410/410/360/270
164 179
200 344
116
60
2.11/0.45 2.11/0.44
92/102 97/102
42
6
8
7/13 13/13
5
7
1
1
2
30
2
60/51 65/50
27
11 10
2
3
16
0.23
102
30
3
50
27
12
4
26
12
Variable
capacity
unit
Constant
capacity
unit
Indoor unit
Outdoor unit
Items
Ambient temp.
Indoor unit
Piping
Condition
Indoor
Outdoor
Quantity
Quantity in operation
Model
Main pipe
Branch pipe
Total piping length
-
V ariable
capacity unit
Constant
capacity unit
DB/WB
Set
-
m
-
kg
A
V
Pulse
MPa
°C
Outdoor
unit
Sectional temperature
Pres-
sure
LEV opening
Indoor unit fan notch
Refrigerant volume
Current
Voltage
Indoor unit
SC (LEV1)
Oil return (SLEV)
SC (LEV1)
Liquid pipe (LEV2)
High pressure/Low pressure
(after O/S) (before Main ACC)
PUHY-P650YSEM-A PUHY-P750YSEM-A
PUHY-P400YEM-A PUHY-P500YEM-A
PUHN-P250YEM-A PUHN-P250YEM-A
Variable
capacity
Constant
capacity
-27-
27.0/19.0 27.0/19.0
35.0/- 35.0/-
5
5
5
55 55
5
5
5
9
5
5
5
22.4 27.9
27.6/26.2/25.2 33.7/32.0/30.8
164 179
344
1.96/0.43 1.96/0.42
90/95 95/100
42
2
4
4/10 10/10
3
30
3
60/51 65/50
27
8
4
26
10
DB/WB
Set
-
m
-
kg
A
V
Pulse
MPa
°C
Outdoor
unit
Indoor
unit
Outdoor unit
Items
Ambient temp.
Indoor unit
Piping
Condition
Indoor
Outdoor
Quantity
Quantity in operation
Model
Main pipe
Branch pipe
Total piping length
Discharge (TH11/TH12)
Heat exchanger outlet (TH5)
Inlet
Accumulator
Outlet
Suction (Comp) (No.1/No.2)
Low pressure saturation
temperature (TH2)
Upper (TH4)
Liquid level
Lower (TH3)
Shell bottom (Comp No.1/No.2)
SCC outlet (TH7)
Bypass outlet (TH8)
Bypass inlet (TH9)
LEV inlet
Heat exchanger outlet
Outdoor unit
Sectional temperature
Pressure
LEV opening
Indoor unit fan notch
Refrigerant volume
Total current
Voltage
Indoor unit
SC (LEV1)
Oil return (SLEV)
High pressure/Low pressure
(after O/S) (before MA)
125 125 100 63 32 125 125 125 100 32
10 10 10 10 10 10 10 10 10 10
Hi Hi Hi Hi Hi Hi Hi Hi Hi Hi
430 430 380 380 350 430 430 430 380 290
380 ~ 415 380 ~ 415
PUHY-400YEM(K,C)-A PUHY-500YEM(K,C)-A
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