Mitsubishi MEE99K045 Service Manual
AIR CONDITIONERS CITY MULTI Series Y, Super Y
Models PUHY-400YMF-B, 500YMF-B
PUHY-P400YMF-B, P500YMF-B
PUHY-600YSMF-B, 650YSMF-B, 700YSMF-B, 750YSMF-B
PUHY-P600YSMF-B, P650YSMF-B, P700YSMF-B, P750YSMF-B
Service Handbook
Contents
1 PRECAUTIONS FOR DEVICES
THAT USE R407C REFRIGERANT ......................................... 1
[1] Storage of Piping Material ............................................. 2
[2] Piping Machining ........................................................... 3
[3] Necessary Apparatus and Materials and Notes on
Their Handling ............................................................... 4
[4] Brazing ........................................................................... 5
[5] Airtightness Test............................................................. 6
[6] Vacuuming ..................................................................... 6
[7] Charging of Refrigerant ................................................. 7
[8] Dryer .............................................................................. 7
2 COMPONENT OF EQUIPMENT ............................................. 8
[1] Appearance of Components .......................................... 8
[2] Refrigerant Circuit Diagram and Thermal Sensor ........ 18
[3] Equipment Composition ............................................... 22
[4] Electrical Wiring Diagram ............................................. 24
[5] Standard Operation Data ............................................. 27
[6] Function of Dip SW and Rotary SW ............................ 39
3 TEST RUN ............................................................................. 45
[1] Before Test Run ........................................................... 45
[2] Test Run Method .......................................................... 52
4 GROUPING REGISTRATION OF INDOOR UNITS WITH
REMOTE CONTROLLER ...................................................... 53
5 CONTROL.............................................................................. 59
[1] Control of Outdoor Unit ................................................ 59
[2] Operation Flow Chart ................................................. 109
[3] List of Major Component Functions ........................... 114
[4] Resistance of Temperature Sensor ............................ 118
6 REFRIGERANT AMOUNT ADJUSTMENT ......................... 119
[1] Operating Characteristics and Refrigerant Amount ... 119
[2] Adjustment and Judgement of Refrigerant Amount ... 119
[3] Refrigerant Volume Adjustment Mode Operation ....... 122
7 TROUBLESHOOTING ......................................................... 129
[1] Principal Parts ............................................................ 129
[2] LED monitor display and Countermeasures
Depending on the Check Code Displayed ................. 158
[3] LED Monitor Display .................................................. 179
Safety precautions
Before installation and electric work
s Before installing the unit, make sure you read all
the “Safety precautions”.
s The “Safety precautions” provide very important
points regarding safety. Make sure you follow them.
s This equipment may not be applicable to EN61000-
3-2: 1995 and EN61000-3-3: 1995.
s This equipment may have an adverse effect on
equipment on the same electrical supply system.
s Please report to or take consent by the supply au-
thority 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 that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This
symbol is displayed on the main unit label.) <Color: Yellow>
: Indicates that the main switch must be turned off before ser-
vicing. (This symbol is displayed on the main unit label.) <Color:
Blue>
: Beware of electric shock (This symbol is displayed on the main
unit label.) <Color: Yellow>
: Beware of hot surface (This symbol is displayed on the main
unit label.) <Color: Yellow>
: Please pay attention to electric shock fully because
ELV
this is not Safety Extra Low-Voltage (SELV) circuit.
And at servicing, please shut down the power supply
for both of Indoor Unit and Outdoor Unit.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• Ask the dealer or an authorized technician to install the air
conditioner.
- Improper installation by the user may result in water leakage,
electric shock, or fire.
• Install the air unit at a place that can withstand its weight.
- Inadequate strength may cause the unit to fall down, resulting
in injuries.
• Use the specified cables for 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.
• Prepare for typhoons and other strong winds and earthquakes and install the unit at the specified place.
- Improper installation may cause the unit to topple and result in
injury.
• Always use an air cleaner, humidifier, electric heater, and
other accessories specified by Mitsubishi Electric.
- Ask an authorized technician to install the accessories. Improper
installation by the user may result in water leakage, electric
shock, or fire.
• Never repair the unit. If the air conditioner must be repaired,
consult the dealer.
- If the unit is repaired improperly, water leakage, electric shock,
or fire may result.
• Do not touch the heat exchanger fins.
- Improper handling may result in injury.
• If refrigerant gas leaks during installation work, ventilate the
room.
- If the refrigerant gas comes into contact with a flame, poison-
ous gases will be released.
• Install the air conditioner according to this Installation
Manual.
- If the unit is installed improperly, water leakage, electric shock,
or fire may result.
• 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 special 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.
• When installing and moving the air conditioner to another
site, do not charge the it with a refrigerant different from the
refrigerant (R22/R407C) specified on the unit.
- If a different refrigerant or air is mixed with the original refriger-
ant, the refrigerant cycle may malfunction and the unit may be
damaged.
• If the air conditioner is installed in a small room, measures
must be taken to prevent the refrigerant concentration from
exceeding the safety limit even if the refrigerant should leak.
- Consult the dealer regarding the appropriate measures to pre-
vent the safety limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards
due to lack of oxygen in the room could result.
• When moving and reinstalling the air conditioner, consult
the dealer or an authorized technician.
- If the air conditioner is installed improperly, water leakage, elec-
tric shock, or fire may result.
• After completing installation 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 de-
vice is shorted and operated forcibly, or parts other than those
specified by Mitsubishi Electric are used, fire or explosion may
result.
11
1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT
11
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 C1220 (CU-DHP) phosphorus deoxidized copper as specified in the *JIS
H3300 “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.
*JIS: Japanese Industrial Standard
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.)
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.
• 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 R407C.
• If another refrigerant (R22, etc.) is used, the chlorine
in the refrigerant may cause the refrigerator oil to deteriorate.
Be especially careful when managing the tools.
• If dust, dirt, or water gets in the refrigerant cycle, the
refrigerant may 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 abnormal stopping.
–1–
[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.
–2–
[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.
–3–
[3] Necessary Apparatus and Materials and Notes on Their Handling
The following tools should be marked as dedicated tools for R407C.
<<Comparison of apparatus and materials used for R407C and for R22>>
Apparatus Used Use R22 R407C
Gauge manifold Evacuating, refrigerant filling Current product
Charging hose Operation check Current product
Charging cylinder Refrigerant charging Current product Do not use.
Gas leakage detector Gas leakage check Current product Shared with R134a
Refrigerant collector Refrigerant collection R22 For R407C use only
Refrigerant cylinder Refrigerant filling R22
Vacuum pump Vacuum drying Current product
Vacuum pump with a check valve Current product
Flare tool Flaring of pipes Current product
Bender Bending of pipes Current product
Application oil Applied to flared parts Current product
Torque wrench Tightening of flare nuts Current product
Pipe cutter Cutting of pipes Current product
Welder and nitrogen cylinder Welding of pipes Current product
Refrigerant charging meter Refrigerant charging Current product
Vacuum gauge Checking the vacuum degree Current product
Identification of dedicated use for R407C
: Record refrigerant
name and put brown
belt on upper part of
cylinder.
Can be used by
attaching an adapter
with a check valve.
Ester oil or Ether oil or
Alkybenzene (Small
amount)
Symbols:
Tools for R407C must be handled with more care than those for conventional refrigerants. They must not come into contact
with any water or dirt.
To be used for R407C only. Can also be used for conventional refrigerants.
–4–
[4] 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 nitrogen.
–5–
[5] Airtightness Test
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, taking
temperature variations into account.
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 this
refrigerant can then not be used.
Note:
• A leakage detector for R407C is sold commercially and it should be purchased.
[6] Vacuuming
1. Vacuum pump with check valve
A vacuum pump with a check valve is required to prevent the vacuum pump oil from flowing back into the refrigerant
circuit when the vacuum pump power is turned off (power failure).
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 the
vacuum pump is not properly maintained, the degree of vacuum may be too low.
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 measure a
vacuum of 5 Torr.
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 the that 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 the
charge hose to drawn in air before stopping operation.
The same operating procedure should be used when using a vacuum pump with a check valve.
–6–
[7] 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
Cylin-
Cylin-
der
Cylinder color identification R407C-Gray Charged with liquid refrigerant
R410A-Pink
Valve
der
Val ve
Liquid
Liquid
Reasons:
1. R407C is a mixture of 3 refrigerants, each with a different evaporation temperature. Therefore, if the equipment is
charged with R407C gas, then the refrigerant whose evaporation temperature is closest to the outside temperature 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. Check the
type of cylinder before charging.
[8] 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, Super 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 should
be the last operation performed.
–7–
22
2 COMPONENT OF EQUIPMENT
22
[1] Appearance of Components
1 Variable capacity unit
Ambient temperature Sensor
Oil Separator
Variable Capacity
Compressor (No.1
Compressor)
Heat Exchanger
Accumulator
Oil Equalization Pipe Belt Heater Constant Capacity Compressor
(No.2 Compressor)
Rear
Four-way Valve
(21S4a)
Four-way Valve
(21S4b)
Heat Exchanger
Solenoid Valve
(SV5b)
Sub-cool Ciol
Heat Exchanger of CS circuit
(PUHY-P-YMF-B only)
–8–
Controller Box
FANCON board
RELAY board
Choke coil (L2)
Thermal overload
(51C2)
Magnetic contactor
(52C2)
MAIN board INV board
Thyristor module
(SCRM)
Transistor module
(TRM)
Diode stack (DS)
Magnetic contactor
(52F)
–9–
Magnetic contactor
(52C1)
Capacitor (C2, C3)
(Smoothing capacitor)
Noise Filter Box
(Rear of the controller box)
DC reactor (DCL)
Noise filter box
Noise filter (NF)
–10–
MAIN board
CNTR CNFC1
CNVCC4
Power source for
control
CNS1
M-NET
transmission
CNS2
M-NET
transmission
(Centralized
control)
CN40
M-NET transmission
power supply
CNVCC3
Power source for control
1-2 30 V, 1-3 30 V
4-6 12 V, 5-6 5 V
CN51
Indication distance
3-4 Compressor
ON/OFF
3-5 Trouble
CNRS3
Serial transmission to
INV board
CN20
Power supply
3 L1
1 N
CN3D
Cooling/Heating auto
changeover
LD1
Service LED
SW4 SW3 SW2 SWU2 SWU1 SW1
–11–
INV board
Output to transistor module
CN3 CN2-1 CN2-2 CN2-3
CNVCC2
Power supply (5 V)
CNVCC1
Power supply
1-2 30 V, 1-3 30 V,
4-6 12 V, 5-6 5 V
CNVDC
CN52C
CNFAN
CNAC2
Power source
1 L2
3 N
CNL2
CN30V
CNTH
CNCT
CNR CNRS2 SW1
–12–
FANCON board
CNV CNW
CNU CNFC2
–13–
RELAY board
CN51C2 CNOUT2 CNRT2
CN52F CN52C2 CNCH
–14–
2 Constant capacity unit
Ambient temperature sensor
Solenoid valve (SV3, PUHN-P-YMF-B only)
Solenoid valve (SV2, PUHN-P-YMF-B only)
Heat exchanger
Accumlator
Four- way valve
Service check-point
(right; high pressure,
left; low pressure)
Gas ball valve
Liquid ball valve
Rear
Constant capacity compressor
(No.3 compressor)
Heat exchanger
Controller box
Oil balance pipeBelt heater
Accumulator Sub-cool coil
–15–
Controller Box
CONT board
Terminal block TB1
powersource
FANCON board
Noise Filter (NF)
Terminal block TB3
transmission
Transformer
Magnetic contactor
(52C)
Thermal overload relay
(51C)
Thyristor module
(SCRM)
Fuses (F1,F2)
–16–
CONT board
SWU2
CNTR
SWU1
CNFC1
SW3
SW2
CNS1
M-NET
transmission
CN20
Power supply
1 N
3 L1
–17–
BV3
TH6
TH7
TH8
TH5
CJ1
O/S
63HS
TH11
HEX2b
HEX1b
CJ2
CV1
SV4
SV1
CP1
TH4
TH3
CP4
BV2
BV1
TH12
Comp2
Comp1
HEX2a
HEX1a
CV2
SA
MA
CP3a
SV6
SCC
LEV1
63H1
63H2
21S4a
21S4b
SV5b
SV22
SV32
ST5
ST6
CP3b
ST3
ST4
ST9
ST8
TH9a
ST2
ST1
CJ3
ST7
TH9b
TH2
Drier
CP2
CS-circuit
TH10c
63LS
CV3
CP5
TH10a
TH10b
SLEV
[2] Refrigerant Circuit Diagram and Thermal Sensor
1 PUHY-P400·500YMF-B
–18–
2 PUHY-400·500YMF-B
BV1
ST1
* There are SV22, SV32 only for PUHY-500YMF-B
CJ2
CP3b
MASA
ST9
TH2
ST3
TH3
CP2
BV2
BV3
ST2
CP5
CV3
21S4b
21S4a
CJ1
HEX2b
SV4
63HS
ST5
SV6
O/S
CP1
ST6
SV1
TH10a
SV32
SV22
CP3a
TH12
CV2
TH11
CV1
63H2
63H1
No.2
No.1
Comp.
CJ3
SLEV
Comp.
ST4
TH4
CP4
HEX2a
ST8
TH8
TH5
TH7
ST7
TH9
SCC
LEV1
TH10b
SV5b
HEX1a
HEX1b
TH6
–19–
3 PUHY-P600·650·700·750YSMF-B
Distributer(Gas)
Indoor unit
Oil balance
pipe
BV3
TH6
TH7
TH8
TH5
CJ1
O/S
63HS
TH11
HEX2b
HEX1b
CJ2
CV1
SV4
SV1
CP1
TH4
TH3
CP4
BV2
BV1
TH12
Comp2
Comp1
HEX2a
HEX1a
CV2
SA
MA
CP3a
SV6
SCC
LEV1
63H1
63H2
21S4a
21S4b
SV5b
SV22
SV32
ST5
ST6
CP3b
ST3
ST4
ST9
ST8
TH9a
ST2
ST1
CJ3
TH9b
TH2
Drier
CP2
CS-circuit
TH10c
63LS
CV3
CP5
TH10a
TH10b
Distributer(Liquid)
SCC
TH7
TH5
O/S
TH11
CJ2
SV4
SV1
CP1
CP4
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
ST7
TH9
TH8
TH10b
SV3
SV2
SLEV
PUHY-P400,500YMF-B
PUHN-P200,250YMF-B
–20–
21S4b
HEX1b
TH6
TH10b
HEX2b
21S4a
CJ1
63HS
ST5
SV4
SV6
TH10a
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
CP5
CV3
CJ2
SCC
SCC
ST1
BV1
Distributer (Gas)
Indoor unit
BV2
ST2
BV3
BV1
ST1
CJ2
63LS
MA
SA
CP3
ST8
ST4
TH4
ST3
TH3
CP4
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
4 PUHY-600·650·700·750YSMF-B
PUHY-400,500YMF-B
–21–
PUHY-200,250YMF-B
[3] Equipment Composition
A. Outdoor Unit
PUHY-(P)400·500YMF-B
PUHY-(P)600·650·700·750
YSMF-B
B. Branch Pipe Kit
▼
Branch joint
4-connection 7-connection 10-connection
Oil balance pipe 1 Distributer (gas)
Oil balance pipe 2 Distributer (liquid)
CMY-Y102S-F CMY-Y102L-F
CMC-30A*
CMY-Y202-F CMY-Y302-F
CMY-Y104-E CMY-Y107-E CMY-Y1010-E
In the case of the PUHY-(P)YSMF-B, the CMC-30A is
necessary.
D. Indoor unit
20VMB
25VBM
32VBM
40VBM
-
-
-
-
-
-
-
-
-
Cassette ceiling
-
80VLMD
100VLMD
125VLMD
Ceiling
4-way flow2-way flow
concealed
PLFY-PPLFY-P PEFY-P PKFY-P PCFY-P PFFY-P PFFY-P
-
80VKM
100VKM
125VKM
71VMH
80VMH
100VMH
125VMH
Model
1-way flow
Capacity
PMFY-P
20 -20VLMD 20VML 20VAM - 20VLEM 20VLRM
25 -25VLMD 25VML 25VAM - 25VLEM 25VLRM
32 32VKM32VLMD 32VML 32VGM - 32VLEM 32VLRM
40 40VKM40VLMD 40VMH 40VGM 40VGM 40VLEM 40VLRM
50 50VKM50VLMD 50VMH 50VGM - 50VLEM 50VLRM
63 63VKM63VLMD 63VMH - 63VGM 63VLEM 63VLRM
71
80
100
125
140 -- 140VMH - - - 200 -- 200VMH -
250 -- 250VMH - - - -
▼
Ceiling mounted
built-in
PDFY-P
20VM
25VM
32VM
40VM
50VM
63VM
71VM
80VM
100VM
125VM
-
-
-
Wall mounted
-
-
-
-
Branch header
Ceiling
suspended
-
100VGM
125VGM
-
Floor standing
Exposed Concealed
--
-
-
-
-
-
-
--
E. Option (panel)
Model
Capacity
20
25
32
40
50
63
80
100, 125
Decoration panel
PMP- CMP-
40MB
32LW-F
40LW-F
-
63LW-F
125LW-F
PLP-
-
3GB
6GB
F. Remote controller
PAR-F25MA MJ-103MTRAPAC-FL31MA PAC-SC30GRA PAC-SC32PTA PAC-SE51CRA
CHECK
TEST RUN
STAND BY
DEFROST
NETWORK
REMOTE CONTROLLER
PAR-F25MA
CENTRALLY CONTROLLED
CHECK
INDOOR UNIT
ADDRESS NO.
TEMP. TIMER SET
˚C
ON OFF
CLOCK
ERROR CODE
OA UNIT ADDRESS NO.
˚C
AM
–
ON/OFF
1Hr.
˚C
FILTER
CHECK MODE
TEST RUN
NOT AVAILABLE
ON OFFCLOCK
FILTER
CHECK
TEST RUN
PM
AM
PM
NOT AVAILABLE
ON/OFF
MODE
CLOCK
FAN
VANE
STOP
START
MIN.
HR.
COLLECTIVE
GROUP
GROUP
REMOTE CONTROLLER
PAC-SC30GRA
CENTRALLY CONTROLLED
ADDRESS
CHECK
˚C
ON/OFF
˚C
OFF
ON
FILTER
CHECK MODE
TEST RUN
NOT AVAILABLE
ON/OFFTEMP.
FILTER
CHECK
GROUP
TEST RUN
ON/OFF
CENTRAL CONTROLLER
TEST RUN
ON/OFF
FAN SPEED
MODE
GROUP
123
SELECT
AIR
DIRECTION
BACK
SCREEN
6
54
CLOCK/
TEMP.
VENTILATION
PATTERN
INS.
9
87
TIMER
REMOTE
RESET
MODE
PROHIBITION
ENTER
MJ-103MTRA
DEL.
0
SET
SET/MONITOR TODAY
PROGRAM TIMER
PAC-SC32PTA
SMTWTFS
CLOCK
SET BACK
036912
12 15 18 21 24
WEEKLY
DAILY
SET BACK ON
SETTING
SETTING
SET BACK
ON
DAILY TIMER
OFF
OFF
–22–
TEMP.
CENTRAL
TEMP.CHECK
PAC-SE51CRA
˚C
ON/OFF
–23–
*3:NF is in the back of the Inverter Controller Box.
(Refer to the <Unit Internal layout>.)
6
4
2
5
3
1
6
4
2
5
3
1
Black
White
Red
Black
White
Red
CH11
Fan motor
(Heat exchanger)
Fan motor
(Heat exchanger)
Black
White
Red
51C2/Model P400,(P)500: 27A
Model 400 : 17.5A
Refer to the Service handbook about the switch operation.
SW4-6
OFF
ON
as connection with
PUHN-(P)200/250YMF-B
A
A
BOX BODY
BOX BODY
*2
*1
*2
circuit
detection
There are not “*1” on “PUHY-400YMF-B
”.
There are not “*2” on “PUHY-400/500YMF-B
”.
Black
White
Red
TH10a
TH10b
4321
(4P)
CN13
SV5b
SV6
21S4b
SV4
SV32
DEMAND
SNOW
NIGHT
1-2
CN3S
1-3
CN3N
1-2
Mode
132
CN3N
(3P)
circuit
detection
CN05
12345
6
N
L3
L2
L1
N
L3
L2
L1
Yel l o w
Green/
Blue
Black
White
Red
NF
Yel l o w
Green/
Blue
Black
Red
White
L1
TB1A
BOX BODY
N
L3
L2
3
CNMF2
52C2
14
13
A2
A1
A2
A1
52C2
123
4
5
1
2
3
1
2
3
1
2
123
4
12345
96
95
51C2
CH12
TH12
12 12 1234
CN07
(2P)
CN06
(2P)
CN35
(3P)
CN34
(6P)
654321321
1
2
3
CN38
(3P)
X10
43
21
SSR
X04
X05
21S4a
SV22
CH2
CH3
63H1
TH6
TH3TH4
CN05
(4P)
X07
X06
12345
6
(6P)
CN36
X09
X08
12345
6
(6P)
CN37
(2P)
21
63H2
1
234
5
X02
X03
X01
RELAY board
CNRT1
(5P)
(5P)
CNRT2
(3P)
CNCH
(3P)
CN51C2
CN52C2
(5P)
CN52F
(3P)
TH9a
(2P)
21
(4P)
CNOUT2
(6P)
CNOUT1
CN09CN12
TH9b TH10c
52F
Black
White
Red
Motor (Compressor)
Control circuit board
52F
U
W
MF2
V
U
W
MC2
V
1
3
5
6
4
2
6
5
4
3
2
1
52C2
51C2
COOL
HEAT
Normal
changeover
Auto
Mode
CN3D
OFF
ON
1-3
OFF
ON
OFF
ON
1-2
<WIRING DIAGRAM>
Earth terminal
Thermistor
Terminal block
(5P)
CNU
(6P)
CNFC2
(5P)
CNV
(5P)
CNW
Noise Filter
NF
Power transistor module
TRM1~3
Ferrite core
FB1
Diode stack
DS
Electronic expansion valve
Crank case heater(Compressor)
CH11,12
Solid state relay
SSR
Magnetic contactor (Inverter main circuit)
Name
Symbol
High pressure switch
21S4a,b
4-way valve
LEV1,SLEV
Solenoid valve
CH2,CH3
Cord heater
High pressure switch63HS,63LS
63H1,2
ZNR4
Current Sensor
52C1
Magnetic contactor
52C2
Magnetic contactor
52F
Overload Relay
51C2
DCCT
DC reactor
(Power factor improvement)
L2
SV1,22,32,4,5b,6
Choke coil(Transmission)
<SYMBOL EXPLANATION>
Fan (Radiator panel)
TB1, 1A, 3,7
DCL
MF1
Blue
Red
Orange
Brown
Red
White
Yellow
Black
Purple
Black
Brown
Red
Inverter Controller Box
BOX BODY
(INV board)
Power circuit board
L2
Orange
Yellow
Black
R7
Purple
MF1
(2P)
CN30V
(2P)
CNL2
(6P)
CN3
(5P)
CNLV2
(3P)
CNTR
(5P)
CNLV1
(3P)
CN32
(3P)
CNL
(2P)
CN2-1
(3P)
CNH
(2P)
CN01
THHS
(8P)
CN02
(2P)
CN2-2
(3P)
CN03
(3P)
CNFAN
(7P)
CNRS3
(6P)
CNVCC1
(4P)
CNCT
(6P)
CNVCC3
(2P)
CNVCC2
(7P)
CNRS2
X10
X01
X02
52C1
32165
1234567121432
2
6
3
54
1
32
2
11
1
21
2
21
31
243
2
21
1
43
2
21
FG
12
3
BlackRed
Motor (Compressor)
Varistor
V
MC1
W
C20
C23 C24
C21 C22
U
C25
White
12
DCCT
34
C16
C15
C14
B1
E1
E2
E2
B2
C2E1
TRM3
C1
C2E1
B2
E2
E2
E1
B1
B1
E1
E2
E2
B2
C2E1
C1
TRM2
CNTR1
1A F
250VAC
F3
T01
R3
R2
C3
C2
DCL
+
TRM1
+
52C1
R1
R5
C1
ZNR4
+
~
-~
C1
DS
~
TB7
M2
M1
TB3
controller
remote
Indoor and
Connect to
Yellow
Green/
Blue
Black
Red
White
PE
SLEV
L1
63LS
Red
White
Black
321
63HS
Red
White
Black
TH5 TH8
TH7
TH2
TH11
321
2A F
250VAC
F1
L2
TB1
LEV1
SV1
(MAIN board)
50/60 Hz
380/400/415 V
3N~
Power source
L3
N
4:Compressor ON/OFF
5:Trouble
N
12V
X01
X02
(2P)
CNTH
(4P)
CNVDC
3
(3P)
CN52C
2
(3P)
CNR
(3P)
CNX10
1
(3P)
CNS2
2
(3P)
CNAC2
(5P)
CN51
(2P)
CNS1
31
(2P)
CNVCC4
2
(2P)
CN2-3
1
1
2
3
2
(6P)
CNFC1
2
(3P)
CN20
3
(3P)
CN3S
(3P)
CN3D
1
1
(3P)
CN33
3
2A F
250VAC
F01
65432
1
5322413
625
5
1
43
1
2
213
5
3
4
4325
1
2
3
6217
3
1
2
1122
1
3
8
1
763211
4
2
1
3
3
4
VK1
VG1
VK2
VG2
WK1
WG1
WK2
TH2~12, THHS
(FANCON board)
Fan control board
WG2
123
54321 12345
6
5
UK2
UK1
UG1
5
4
UG2
V
CN04
Black
12A F
600VAC
321
4
MF3
L3
12A F
600VAC
F1
L2
W
L3
White
L1
F2
L2
Red
L1
U
V
VG2
VK2
VG1
VK1
WG1
W
WK2
WK1
UK2
U
UG1
SCRM
UG2
UK1
WG2
CNMF3
K
G
K
G
K
G
K
G
K
G
K
G
2
5
R6
PE
L3
1
L1
M1
M2
S
L2
6
4
2
5
3
1
FB1
<CAUTION>
·When checking for the inside control box,Be sure to turn the
power source off,And confirm that the voltage at the both
ends of main capacitor(C2,C3) is being sufficientry low by
opening MAIN board mounting plate after leaving 10minutes
or more.
·Please read the INSTALLATION MANUAL carefully.
[4] Electrical Wiring Diagram
1 PUHY-(P)400·500YMF-B
–24–
FLAG3
FLAG2
FLAG1
FLAG5
FLAG6
FLAG7
<LED display>
FLAG4
FLAG8
LED1
TH7
❇3
PUHY-P400YMF-B
-(P)500YMF-B
PUHY-400YMF-B
SV22
MC2
63H2
TH12
SV5b
21S4b
SV6
SV4
SV1
TH12
63H2
MC2
<Internal layout>
63HS
63H1
63LS
TH3
TH4
TH5
TH6
TH10b
TH9b
SV32
LEV1
TH2
TH9a
TH8
TH11
MC1
Oil separator
21S4a
ACCUMULATOR
Inverter
Controller
Box
SLEV
*2
*2
*3
*2
NF
TH10a
TH10c
1102
❇ Please refer to the service handbook about other switch settings of LED display.
51
456327
910
21S4bSV4
SV22/32
109
OFF:0
ON:1
During
compres-
sor run
( at factory shipment)
FLAG7FLAG1
Display at LED lighting (blinking)
52C2 21S4a
FLAG6
Display
SW1 operation
Always
lighting
<Operation of self-diagnosis switch (SW1)and LED display>
81234567
FLAG3 FLAG4FLAG2
SV11
FLAG5
Relay output
display
(Lighting)
Check display1
(Blinking)
FLAG8
ON:1
FLAG8 always
lights at
microcomputer
power ON
18
OFF:0
52C1
❇
SV5b SV6 CH2,3 52F
SV5B is closed
when FLAG3 is
turned ON.
Display the address and error code by turns.
❇Only for PUHY-P400,
(P)500YMF-B
Remarks
–25–
2 PUHN-(P)200·250YMF-B
Model 200: 24A
Model 250: 27A
*1
<Difference of appliance>
*1
Appliance
PUHN-P200·250YMF-B
PUHN- 200·250YMF-B
L2
L1
L3
PE
5
G
K
G
K
G
K
G
K
G
K
G
K
CNMF
WG2
UK1
UG2
SCRM
UG1
U
UK2
WK1
WK2
W
WG1
VK1
VG1
VK2
VG2
V
U
L1
Red
L2
F2
L1
L3
W
L2
F1
600VAC
8A F
L3
MF
4
1
2
3
600VAC
8A F
Black
CN04
V
Red
UG2
4
White
Black
5
UG1
UK1
UK2
5
6
5432112345
3
2
1
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
2
3
4
5
6
CN09
(2P)
CN06
(2P)
1
1
3
CN20
(3P)
2
CNFC1
(6P)
2
3
2
1
CNS1
(2P)
1
2
3
12
CN38
(3P)
X01
N
N
L3
Power source
3N~
380/400/415V
50Hz
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
Green/
Yellow
Invreter
unit
Unit 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
1
2
3
3
2
1
5
4
3
2
1
6
6
5
4
S
X02
SV1
51C
CN46
(3P)
CNCH11
(3P)
CH11
52C1
CN52C1
(5P)
X06
X07
52C151C1
13
14
A1
A2
Detection
circuit
Detection
circuit
ZNR01
A
A
Fan motor
L1L2L3
L1L2L3
CH3
CH2
X05
X04
SSR01
12
34
3
2
1
1
2
3
4
5
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
SORENOID 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
SORENOID VALVE
4-WAY VALVE
CORD HEATER
CRANK CASE HEATER(COMPRESSOR)
FAN MOTOR(HEAT EXCHANGER)
ELECTRIC MOTOR OF COMPRESSOR
OVER CURRENT RELAY
MAGNET CNTACTOR
FUSE(1A)
SOLID STATE RELAY
VARISTOR
THERMISTER
ELECTRONIC EXPANSION VALVE
THERMISTER
NAMESYMBOL
F1,F2
FUSE(8A)
F1
FUSE(6.3A)
SYMBOL NAME
SORENOID VALVE
51C1
“*1” are not existed
ALL exists
Difference
<Internal layout>
TH10a
TH8
TH5
TH7
63LS
SV1
63H
TH3
TH4
TH10b
TH11
SV5b
Oil
separater
TH6
TH9
SV4
LEV1
LEV2
21S4
MC1
ACCUMULATOR
Inverter
contoroller
box
(FRONT)
There is not diagnostic switch in constant
capacity unit, but variable capacity unit can
diagnose it.
–26–
[5] Standard Operation Data
1 Cooling operation
Items
Ambient temp.
Indoor unit
Condition
Piping
Indoor unit fan notch
Refrigerant volume
Total current
Voltage
Outdoor unit
Indoor unit
Indoor
Outdoor
Quantity
Quantity in operation
Model
Main pipe
Branch pipe
Total piping length
Outdoor unit
DB/WB
Set
-
m
-
kg
A
V
PUHY-P400YMF-B PUHY-P500YMF-B
27.0/19.5 27.0/19.5
35.0/24.0 35.0/24.0
55
55
125 125 100 63 32 125 125 125 100 32
55
10 10 10 10 10 10 10 10 10 10
55 55
Hi Hi Hi Hi Hi Hi Hi Hi Hi Hi
22.4 28.9
28.2/26.8/25.8 35.1/33.4/32.2
380 ~ 415 380 ~ 415
410 410 360 360 340 410 410 410 360 280
SC (LEV1)
LEV opening
Oil return (SLEV)
High pressure/Low pressure
(after O/S) (before MA)
Pressure
Discharge (TH11/TH12)
Heat exchanger outlet (TH5)
Accumulator
Suction (Comp) (No.1/No.2)
Low pressure saturation
Outdoor
unit
Sectional temperature
temperature (TH2)
Liquid level
Shell bottom (Comp No.1/No.2)
SCC outlet (TH7)
Bypass outlet (TH8)
Inlet
Outlet
Upper (TH4)
Lower (TH3)
Pulse
kg/cm2G
(MPa)
°C
164 179
200 344
21.5/4.4 21.5/4.3
(2.11/0.43) (2.11/0.42)
92/102 97/102
42
45
67
6/12 12/12
1
30
1
60/51 65/50
27
10 11
Indoor
unit
Bypass inlet (TH9a)
CS circuit (TH9b)
Circulating configuration (αOC)
LEV inlet
Heat exchanger outlet
23
16
0.23
26
12
–27–
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