Mitsubishi PUHY-400YMF-C, 500YMF-C, PUHY-P400YMF-C, P500YMF-C, PUHY-600YSMF-C Service Manual

Service Handbook PUHY-400YMF-C, 500YMF-C

PUHY-P400YMF-C, P500YMF-C

PUHY-600YSMF-C, 650YSMF-C, 700YSMF-C, 750YSMF-C

PUHY-P600YSMF-C, P650YSMF-C, P700YSMF-C, P750YSMF-C

HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO

C-P600·P650·P700·P750YSMF-C/PUHY-600·650·700·750YSMF-C/PUHY-P400·P500YMF-C/PUHY-400·500YMF-PUHY Handbook Service

AIR CONDITIONERS CITY MULTI

Models PUHY-400YMF-C, 500YMF-C PUHY-P400YMF-C, P500YMF-C

PUHY-600YSMF-C, 650YSMF-C, 700YSMF-C, 750YSMF-C

PUHY-P600YSMF-C, P650YSMF-C, P700YSMF-C, P750YSMF-C

Service Handbook

New publication effective Jan 2003

Issued in May 2003 MEE02K140 Specifications subject to change without notice. Printed in Japan

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 Test.............................................................	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 ...................................	153
	[3]	LED Monitor Display ..................................................	175
8	PREPARATION, REPAIRS AND REFRIGERANT
	REFILLING WHEN REPAIRING LEAKS ..............................		199
	[1] Location of leaks: Extension piping or indoor units
		(when cooling) ...........................................................	199
	[2] Location of leaks: Outdoor unit (Cooling mode) .........		200
	[3] Location of leaks: Extension piping or indoor units
		(Heating mode) ..........................................................	200
	[4] Location of leaks: Outdoor unit (when heating)..........		201
9	CHECK THE COMPOSITION OF THE REFRIGERANT......		202

Safety precautions

Before installation and electric work

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 not be applicable to EN61000-3-2: 1995 and EN61000-3-3: 1995.

This equipment may have an adverse effect on equipment on the same electrical supply system.

Please report to or take consent by the supply authority before connection to the system.

Symbols used in the text

Warning:

Describes precautions thatshould be observed to prevent danger of injury or deathto the user.

Caution:

Describes precautionsthatshould be observed to

preventdamage 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 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.

•Have all electric work done by a licensedelectrician 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 parts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

¡ PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT

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 deteriorate.

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 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] 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).

-4-

[4] 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.

[5]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 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 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.

-5-

[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

	Cylin-
Cylin-	der
der

Cylinder color identification	R407C-Gray	Charged with liquid refrigerant
	R410A-Pink	Valve
Valve

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.

[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 should be the last operation performed.

-6-

[1] Appearance of Components

1Variable capacity unit

Ambient temperature Sensor

Heat Exchanger

Accumlator

Oil Separator

	Variable Capacity
	Compressor	Constant Capacity Compressor
	(No. 1 Compressor)
		(No. 2 Compressor)
	Oil Equalization Pipe
		Crank Case Heater

Rear

Heat Exchanger

Four-way Valve

(21S4a)

Sub-cool Coil

Heat Exchanger of CS circuit (PUHY-P-YMF-C only)

Four-way Valve (21S4b)

Solenoid Valve	Solenoid Valve	Solenoid Valve
(SV8)	(SV7)	(SV5b)
(PUHY-P-YMF-C only)	(PUHY-P-YMF-C only)

-7-

2 Constant capacity unit

Ambient temperature Sensor

Four-way valve

Service check-point (right; high pressure,

left; low pressure)

Gas ball valve

Liquid ball valve

Constant capacity compressor (No. 3 compressor)

Solenoid valve (SV3, PUHN-P-YMF-C only) Solenoid valve (SV2, PUHN-P-YMF-C only)

Heat exchanger

Accumlator

Controller box

Oil balance pipe

Crank Case Heater

Rear

Heat Exchanger

Accumlator

Sub-cool Coil

-8-

Controller Box

RELAY board

FANCON board (for MF3)

Choke coil (L2)

MAIN board

INV board

Magnetic contactor (52C2)	SNB board
	Diode stack (DS)

FANCON board (for MF2)

G/A board

Overload relay	Inteligent Power
(51C2)	Module (IPM)

Y-C board

Magnetic contactor	Noise filter	Magnetic contactor (52C1)	Capacitor (C2, C3)
(52F)	(NF)		(Smoothing capacitor)

-9-

MAIN board

		CNVCC4
		Power source
CNTR	CNFC1	for control(5V)	CNS1	CNS2 CN40 CN41	CNVCC3
					Power Source
					for control
					1-2 30V
					1-3 30V
					4-6 12V
					5-6 5V
					CN51
					Indication distance
					3-4 Compressor
					ON/OFF
					3-5Trouble
					CNRS3
					Serial transmission to
					INV board
					CN3D
					CN3S

CN3N

LD1

Service LED

CN20 SW4 SW3 SW2 SWU2 SWU1 SW1

Power supply

3 L1

1 N

-10-

INV board

CNVDC

1 - 4

DC-560V

CN15V2 Power supply for IPM control

		CNVCC4
		Power supply (5V)
		CNL2
		Choke coil
		CNVCC2
		Power supply
	CNR	1-2 30V, 1-3 30V
		4-6 12V, 5-6 5V
	CN52C	CNDR2
	Control for	Out put to
	52C	G/A board
	CNFAN	CNTH
	Control
	for MF1

	CNAC2
	Power Source	SW1	CNRS2	CNACCT
	1 L2
			Serial transmission
	3 N
			to MAIN board
	5 G

-11-

FANCON board

CNFAN

CNPOW

CNFC2

G/A board

CNE CNDC1

CN15V1

CNIPM1

CNDR1

-12-

SNB board

Y-C board

-13-

RELAY board

CN51C2

CNOUT2

CNRT2

CN52C2

CNCH

CN52F

-14-

• Constant capacity unit

Controller Box

Control board

Terminal block TB1				Terminal block TB3
powersource				transmission

Transformer

FANCON board

Magnetic contactor (52C)

Noise Filter (NF)

Thermal overload relay (51C)

Thyristor module (SCRM)

Fuses (F1, F2)

-15-

CONT board

				CNS1
				M-NET
SWU2	SWU1	CNFC1	SW3 SW2	transmission

CNTR

CN20

Power supply

1 N

3 L1

-16-

FANCON board

CNV

CNW

CNU

CNFC2

-17-

								There are SV22,SV32 only for PUHY-500YMF-C.
	21S4b
T10a	21S4a							BV1
HEX1b	HEX2b							ST1
		CJ1
		63HS	SV4
			ST5					CJ2
TH6			SV6
		O/S
		CP1
		ST6
		SV1
	T10b				SV22	SV32
				CP3a
-18-		TH11		TH12		CP3b
	CV1		CV2
	63H1		63H2				SA	MA
		No.1			No.2
		Comp.	SLEV	CJ3	Comp.
HEX1a	HEX2a	CP4					ST9
			TH4	ST4		TH3	ST3	TH2
SV5b								CP2
	TH8					ST8
	TH5							BV2
	SCC	TH9	ST7					ST2
			TH7					CP5
								BV3
		LEV1

Sensor Thermal and Diagram Circit Refrigerant [2] C-500YMF 400,-PUHY

CV3

										There are SV22,SV32 only for PUHY-P500YMF-C.
			21S4b
				21S4a							BV1
		TH10a
	HEXB1	HEXF1			CJ1						ST1
					63HS		SV4
						ST5
							SV6			CJ2
			TH10b	O/S
					CP1
			SV7		ST6
			CP7
					SV1			CP3a	SV22	SV32
-19-		TH6	HEXF2	TH11
	HEXB2									CP3b
						CV2		TH12
			CV1							63LS
										MA
			63H1	Comp1			63H2			SA
									Comp2
				TH10c		SLEV	CJ3
										ST9
		SV8			CP4		TH4
			Drier	TH9b	CP2			ST4		TH3 ST3
				TH2
	SV5b									ST8
		TH5	TH8								BV2
					TH9a	ST7	TH7			CP5	ST2
											BV3
					LEV1					CV3

C-500YMF P400,-PUHY

PUHY-400,500YMF-C

There are SV22,SV32 only for PUHY-700, 750YSMF-C.

-PUHY

21S4b

600,

TH10a

21S4a

BV1

HEX1b

HEX2b

CJ1

ST1

650,

63HS

SV4

Distributer (Gas)

TH6

ST5

700,

O/S

SV6

CJ2

CP1

-750YSMF

63H1

ST6

SA

TH10b

SV1

CP3a

SV22

SV32

CV1

TH11

CV2

CP3b

TH12

MA

Comp1

SLEV

63H2

Comp2

Indoor unit

C

CJ3

HEX1a

HEX2a

CP4

ST9

TH4

ST4

TH3

ST3

TH2

SV5b

TH8

ST10

CP2

ST8

TH5

BV2

SCC

ST7

TH7

ST2

TH9

-20-

LEV1

CV3

BV3

CP5

PUHN-200,250YMF-C

21S4

BV1

CJ1

ST1

Oil balance

ST5

SV4

pipe

CV1

O/S

CJ2

CP1

TH10a

ST6

CP3

SV1

TH11

TH6

63H

Comp1

MA

SA

TH3

63LS

Distributer (Liquid)

HEX1

HEX2

ST3

TH4

ST4

TH5

TH8

ST10

CV2

BV2

ST9

ST8

SCC

TH9

TH7

SV5b

CP5

ST2

LEV1

ST7

LEV2

BV3

TH10b

-21-

21S4b	There are SV22,SV32 only for PUHY-P700, 750YSMF-C.
21S4a	BV1
TH10a

HEXB1	HEXF1		CJ1					ST1
					SV4
			63HS
			ST5
					SV6			CJ2
								Distributor
		TH10b	O/S
			CP1
		SV7	ST6
HEXB2 TH6 HEXF2			SV1		CP3a SV22 SV32
			TH11			CP3b
					TH12			63LS
		CV1	CV2
		63H1				SA	MA
			Comp1	63H2
					Comp2
			SLEV		CJ3
			TH10c
			CP4			ST9
	SV8	Drier		TH4 ST4		TH3 ST3
			TH9b CP2
			TH2		ST8
SV5b
	TH5	TH8						BV2
			TH9a ST7		TH7		CP5	ST2
								BV3
			LEV1				CV3

PUHN-P200,250YMF-C						BV1
	21S4
		CJ1				ST1
		ST5	SV4
		CV1
		O/S			CJ2
		CP1
TH10a		ST6
		SV1			CP3
		SV2 SV3
	TH11
TH6					MA
	63H				SA
		Comp1
		TH3			63LS
HEX1	HEX2		ST3
		TH4		ST4		Distributor
	TH8	ST10		ST8		BV2
TH5					CV2
				ST9

TH9	ST7	TH7	SV5b CP5	ST2
LEV1			LEV2	BV3
				TH10b

C-750YSMF 700, 650, P600,-PUHY

-22-

<ELECTRICAL WIRING DIAGRAM>

MC2

Motor

MC1

Motor

U V W

(Compressor)

U V W

(Compressor)

Inverter

Red

WhiteBlack

Red

White Black

Controller Box

51C2

52C2

FB1

FB2

2

1

2

1

4

3

4

3

ACCT

6

5

6

5

-W

ACCT

Terminal

Diode

-U

Terminal

Noise

L1

L2

L3

N

Block

stack

Block

NF Filter

TB1B

DS

R1

R5

IPM

TB1A

L1

FB5

ZNR4

L1

L1

L1

L1

U

V

W

~+

C2+

Power source

R2

L2

L2

L2

L2

L2

C1

P

3N~

~

C3+

380/400/415V

L3

L3

L3

L3

L3

~-

52C1

R3

50/60Hz

N

N

N

N

N

DCL

Gate amp board

N

Y-C

(G/A board)

PE

board

600VAC

BOX BODY

CNE

CNDC1

CNDR1

CN15V1

PE

BOX BODY

F5 8A F

L1

BOX BODY

(2P)

(4P)

(9P)

(14P)

TB3

F6 600VAC

L2 SNB board

Connect to

M1

8A F

L3

EARTH

Indoor and

M2

F3

FB3

remote

250VAC

BOX BODY

controller

BOX BODY

CNTR1

1A F

M1

M2

T01

BOX BODY

S

FB4

TB7

CN20

1

1

CNAC2

1 2 3

1 2

1 2 3

1 2 3

CNRS3

2

2

5 4 3

2 1

1 2 3 4

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14

(3P)

3

3

(5P)

CNS2 CNS1

CNTR

(7P)

4

4 CNRS2

CNVDC

CNDR2

CN15V2

(3P)

(2P)

F1

(3P)

5

5

(7P)

(4P)

(9P)

(14P)

6

6

250VAC

7

7

F01

B

4

2A F

CNVCC4 1

1CNVCC4

250VAC

3

CNAC3

(2P)

2

2(2P)

2A F

2

1

1

Power circuit board

A

1

(4P)

2

2

CH11

CNVCC33

3 CNVCC2

(INV board)

CNACCT

1

Crank case heater

3

(6P)

4

4

(6P)

2

CN32

5

5

(4P)

43

2

6

6

(Compressor)

1

(3P)

X01

X101

1

X01

3

2

2

SV1

CN33

3

52C1 3

CNTH

CNR

CNL2

CN30V

2

X02

X02

CNX10

T10

1 (3P)

CN52C

(2P)

(3P)

(2P)

(2P)

(3P)

(3P)

1 2 3

CNFAN 1 2

1 2 3

1 2

1 2

SV22

6

(3P)

T9

21S4a

5

CN34

X04

SV32

4

MF1

3

(6P)

2

X05

1

BOX BODY

THHS

R7

L2

R6

*1

CH2

SSR

3

4 3

12V

1

CN35

1 2

2

2

A

B

1

(3P)

3

4:Compressor ON/OFF

4

CH3

6

Control circuit board

5

5:Trouble

CN3D

X11 1

CN51

21S4b

5

CN36

(MAIN board)

(5P)

1-2 1-3

MODE

X12

2

SV7

SV4

4

X06

Auto

HEAT

SV8

3

(6P)

ON

ON

3

2

X07

CN3D

23

OFF

ChangeoverCOLL

1

ON

(3P)

1

OFF OFF

Normal

T7

4

6

CN3S

23

DEMAND

MODE

5

SV5b

5

CN37

(3P)

1

CN3S1-2

DEMAND

6

SV6

4

X08

CN3N 23

SNOW

3

(6P)

1-2

NIGHT

7

2

X09

(3P)

NIGHT

CN3N

SNOW

1

1

1-3

	High pressure																											L1 L2 L3								8
	switch						CN38	X10																													CN06
			63H1				(3P)
							1																														*2
							2	detection
			63H2				3																				CNPOW
								circuit																			(5P) 1 2 3			4	5	F03 250VAC 6.3A F
																																F02 250VAC 6.3A F
		CN51C2Relay board																														F01 250VAC 6.3A F
																	SW4-6
51C2		(3P)																							6	T6
																											6
			1										as connection with												5	T5							1			CN04
95	96		2															ON									5
													PUHN-(P)200/250YMF-C											CNFC1	4	T4		CNFC2				CNFAN	2			1
			3																								4											U
																							(6P)		3	T3	3	(6P)				(5P)	3			2	V		MF2
		CN52C2															OFF								2	T2	2						4			3	W
																									1	T1							5			4
A1	A2	(5P)		X01																							1											N
52C2			1										Refer to the service handbook															Fan control board									Fan motor
	52C2		2
			3										about the switch operations.																								(Heat exchanger)
	14 13		4	X02																								(Fancon board)								N
			5		CNRT2		CNRT1
		CN52F			(5P)		(5P)
					5		5																					L1	L2		L3
A2	A1	(3P)			4		4	detection
			1		3		3
52F			2	X03	2		2	circuit
			3		1		1
																											CNPOW
																											(5P) 1 2 3			4	5	F03 250VAC 6.3A F
						*2	CNOUT1																									F02 250VAC 6.3A F
					CNOUT2	X12																										F01 250VAC 6.3A F
		CNCH					(6P)
					(4P)	X11	6																												52F
CH12		(3P)					5
								CN13 CN12 CN09 CN07 CN06					CN05	CN03	CN02	CN01 CNH				CNL			CNLV1	CNLV2			6							2		CN05
			1		4		4																					CNFC2					1		1
			2		3		3	(4P) (2P) (2P) (2P) (2P)					(4P)	(3P)	(8P)	(2P)	(3P)			(3P)			(5P)	(5P)			5					CNFAN	2	4	3	1
			3		2		2	1 2 3 4	1 2	1 2	1 2	1 2	1 2 3 4	1 2 3	1 2 3 4 5 6 7 8	1 2	1	2	3	1	2	3	1 2 3 4 5	1 2 3 4 5			4	(6P)					3			2		U
					1	T8	1																				3					(5P)	4			3	VW MF3
																											2							6	5
																											1						5			4		N
																																				5
																											Fan control board									6	Fan motor
																	Black White Red			Black White Red								(Fancon board)								N	(Heat exchanger)
																								LEV1
																	3	2	1	3	2	1	SLEV
							TH10a TH10b TH9b TH10c TH12 TH9a TH4 TH3							TH6	TH5 TH8 TH7TH2 TH11					63LS
																	63HS
										*3											*3

<Symbol explanation>

Symbol	Name	Symbol		Name
DCL	DC reactor	TH11,12	Thermistor	Discharge pipe temp. detect
	(Power factor improvement)	TH2		Saturation evapo. temp. detect
ACCT-U,W	Current Sensor	TH3		Accumurator liquid	Lower
ZNR4	Varistor	TH4		temp. detect	Upper
52C1	Magnetic contactor	TH5		Pipe temp. detect(Hex outlet)
	(Inverter main circuit)	TH6		OA temp. detect
52C2	Magnetic contactor	TH7		SC coil temp.detect
51C2	Overload relay			(Liquid exit area)
52F	Magnetic contactor(Fan motor)	TH8		SC coil temp.detect
MF1	Fan motor (Radiator panel)			(Bypass exit area)
21S4a,4b	4-way valve	TH9a		LEV1 temp.detect(Enttance area)
SV1,22,32	Solenoid valve	TH9b		Composition sensing temp.
4,6		TH10a		Gas pipe temp.
SV5,6,7,8	Solenoid valve	TH10b		(Hex outlet)
	(Heat exchanger capacity control)	TH10c		Compressor shell temp.
SLEV	Electronic expansion valve(Oil return)	THHS		Radiator panel temp. detect
LEV1	Electronic expansion valve(SC coil)	LD	Accumulator liquid level detect
63HS	High pressure sensor	CH11,12	Crank case heater(Compressor)
63LS	Low pressure sensor	CH2,3	Cord heater
63H1,2	High pressure switch	SSR	Solid state relay
L2	Choke coil(Transmission)	X1,2,4~12	Aux. relay
IPM	Intelligent power module	FB1~5	Ferrite core
T1~10	Terminal		Earth terminal

<Difference of appliance>

	Appliance	Name	NOTE:Mark indicates terminal bed
	PUHY-P400YMF-C	"*1" is not existed	connector
	PUHY-P500YMF-C	All exists
			board insertion connector
	PUHY-400YMF-C	"*1","*2" and "*3" are not existed
	PUHY-500YMF-C	"*2" and "*3" are not existed

<Unit internal layout>

		SV8		TH6
SV5b	21S4b
			21S4a
	TH10b
TH10a	SV7	TH8
	*3			ACCUMULATOR
	TH9b TH5		TH9a
	TH7		LEV1	SV4	TH3
TH2			SV6
			63LS	SV1
				63H1
			*3				TH12
Inverter					TH4
							SV22
Controller		63HS		MC1		MC2	MC2
Box		Oil separater		TH11	*3 SLEV	TH12
						63H2	SV32 63H2
				TH10c

(Front)

PUHY-(P)400YMF-C PUHY-(P)500YMF-C

<Controller box internal layout>

(Upside)

(Underside)

RELAY

*2

R6

SNB

THHS

T01

DCL

board

X11X12

board

+

DS

ZNR4

R2

C2

C1

52C2

-

+

INV board

F5

R3

C3

FANCON

MAIN board

FANCON

51C2

F6

-

G/A board

board

board

(for MF3)

(for MF2)

TB1B

F3

R1

IPM

R5

ACCT ACCT

CN04 CN05

52F

NF

52C1

-U -W

TB1A

TB3 TB7

R7

MF1

L2

<Operation of self-diagnosis switch(SW1)and LED display>

Display

Display at LED lighting (blinking) Remarks SW1 operation

FLAG1 FLAG2 FLAG3 FLAG4 FLAG5 FLAG6

FLAG7 FLAG8

Relay output During

SV22/32 Always

<LED display>

display

Compres- 52C1 52C2 21S4a SV1

*1 lighting

ON:1

(Lighting)

sor run

FLAG8 always

OFF:0

Check display1

Display the address and error code by turns

LD1

12345678910

(Blinking)

lights at

(at factory shipment)

microcomputer

power ON

FLAG1

FLAG8

ON:1

SV5b is closed

FLAG2

FLAG7

SV4 21S4b SV5b

SV6 CH2,3 52F

FLAG3

FLAG6

OFF:0

when FLAG3 is

FLAG4

FLAG5

12345678910

turned ON.

*Please refer to the service handbook about other switch settings of LED display.

Diagram Wiring Electrical [3] C-500YMF (P)400,-PUHY

-23-

Controller Box

		L1	TB1
			L1	Red
Power source		L2	L2	White
3N~
380/400/415V
50Hz/60Hz		L3	L3	Black
		N	N	Blue
			PE
		PE		Box body
			TB3	Box body
Inverter			M1
			M2
unit
			S
	21			6
SV1				5
	S4			3
				4
				2	CN33
				1	(6P)
*1		T1		3
SV2	SV3			2	CN39
				1	(3P)
		T2
	SV			6
				5
SV4	5b			4	CN34
				3	(6P)
				2
				1
	CH2			1
	CH3			2	CN35
				3	(3P)
			CN38
	63H		(3P)
				1
				2
				3
			CN46
	51C		(3P) 1
				2
				3
	CH11			3
				2	CNCH11
				1	(3P)
A2	52			5
A1	C1	52C1		4	CN52C1
	13	14		3	(5P)
				2	X07
				1
					CN12 CN09
					(2P)	(2P)
					1 2	1 2
				TH10b		TH10a

	51C1		52C1		Motor (Compressor)
2	1	2	1	Red
4	3	4	3	White	U
					V MC1
				Black	W
6	5	6	5

Model 200:24A

Model 250:27A

F3

250VAC 1A F

						T01
					CN20
1	2	1	2	3	(3P)	1	2
CNS1					F1		CNTR
(2P)							(2P)
					250VAC
					6.3A F
					ZNR01

X01

X02

X03

Control circuit board (CONT board)

X04
X05
SSR01
4	3
1	2

SW3-10 are OFF for Model 200. and ON for Model 250.

Detection circuit

Detection circuit

X06		1
	CNFC1 2
	(6P)	3
		4
		5
		6

CN06	CN05	CN03	CN02		CN01	CNL			CNLV1	CNLV2
(2P)	(4P)	(3P)	(8P)		(2P)	(3P)			(5P)	(6P)
1 2	1 2 3 4	1 2 34	1 2 3	5 6 7 8	1 2	1	2	3	1 2 3 4 5	1 2 3 4 5 6

	Black White Red
	3	2	1	LEV1	LEV2
TH9 TH4 TH3 TH6 TH5 TH8 TH7	TH11
	63LS

L3	L2	L1
F2		F1
600VAC		600VAC
8A F		8A F

L3	L2		L1		NF
					Noise
					Filter
L3	L2		L1		Box body			SCRM
							UG1
	White						UK2
Black			Red						K	G
								L1	G	K
					VK1
					VG1				G K
								L2
									K	G
					VK2
					VG2				G K
								L3
									K	G
							WG1
							WK2
Fan control board
(Fancon board)								1
	1							2
	2 CNFC2					CNU 3
	43	(6P)				(5P) 4
	5		CNW		CNV			5
	6
			(5P)		(5P)
5	4	3	2	1	5	4	3	2	1

		SYMBOL	NAME	SYMBOL	NAME
		ZNR01	VARISTOR	TH3	THERMISTER
		SSR	SOLID STATE RELAY	TH4	THERMISTER
		F1	FUSE(6.3A) <CONT BOARD>	TH5	THERMISTER
		F1,F2	FUSE(8A)	TH6	THERMISTER
		F3	FUSE(1A)	TH7	THERMISTER
		52C1	MAGNET CONTACTOR	TH8	THERMISTER
		51C1	OVER CURRENT RELAY	TH9	THERMISTER
		MC1	ELECTRIC MOTOR OF COMPRESSOR	TH10a	THERMISTER
		MF	FAN MOTOR(HEAT EXCHANGER)	TH10b	THERMISTER
		CH11	CRANK CASE HEATER(COMPRESSOR)	LEV1	ELECTRONIC EXPANSION VALVE
		CH2,CH3	CORD HEATER	LEV2	ELECTRONIC EXPANSION VALVE
		21S4	4-WAY VALVE	X01~X07	RELAY
		SV1,SV4	SOLENOID VALVE	SW2,SW3	SWITCH
		SV5b	SOLENOID VALVE	SWU1,2	SWITCH
		SV2,SV3	*1 SOLENOID VALVE	TB1	POWER SOURCE TERMINAL BLOCK
		63H	HIGH PRESSURE CUT OUT SWITCH		EARTH TERMINAL
UK1		63LS	LOW SIDE PRESSURE SENSOR	T1,T2	TERMINAL
		TH11	THERMISTER
UG2
U	Red
	1	CNMF	<Difference of appliance>
		U
V	2		Appliance	Difference
	3	VWMF
		N	PUHN-P200·250YMF-C(-BS,-BF)	ALL exists
	CN04	Fan motor
W	Black	(Heat exchanger)	PUHN- 200·250YMF-C(-BS,-BF)	"*1" are not existed

WK1

WG2

UK1

UG1

UK2

UG2

WG2 WK2

WG1 WK1

VG2 VK2

VG1 VK1

C-250YMF (P)200,-PUHN

[4]	Standard Operation Data
1	Cooling operation
					Outdoor unit			PUHY-P400YMF-C								PUHY-P500YMF-C
Items
			Indoor						27.0/19.0								27.0/19.0
	Ambient temp.					DB/WB
			Outdoor						35.0/-								35.0/-
			Quantity			Set			5								5
	Indoor unit
			Quantity in operation						5								5
Condition
			Model			-	125	125		100		63	32		125	125		125		100	32
			Main pipe						5								5
	Piping
			Branch pipe			m	10	10		10		10	10		10	10		10		10	10
			Total piping length						55								55
	Indoor unit fan notch					-	Hi	Hi		Hi		Hi	Hi		Hi	Hi		Hi		Hi	Hi
	Refrigerant volume					kg			22.4								27.9
unit	Total current					A		27.6/26.2/25.2								34.6/32.8/31.7
Outdoor
	Voltage					V			380 ~ 415								380 ~ 415
opening	SC (LEV1)					Pulse	410	410		164		360	340		410	410		179		360	280
	Indoor unit									360								410
LEV
	Oil return (SLEV)								200								344
Pressure	High pressure/Low pressure					MPa			2.11/0.43								2.11/0.42
	(after O/S)		(before MA)
		Discharge (TH11/TH12)							92/102								97/102
		Heat exchanger outlet (TH5)												42
				Inlet					4								5
		Accumulator
				Outlet					6								7
		Suction (Comp) (No.1/No.2)							6/12								12/12
		Low pressure saturation												1
		temperature			(TH2)
temperature	Outdoor
				Lower (TH3)										1
	unit
		Liquid level		Upper (TH4)		°C								30
Sectional
		Shell bottom (Comp No.1/No.2)							60/51								65/50
		SCC outlet (TH7)												27
		Bypass outlet (TH8)							10								11
		Bypass inlet (TH9a)							2								3
		CS circuit (TH9b)												16
		Circulating configuration (αOC)											0.23
	Indoor	LEV inlet												26
	unit	Heat exchanger outlet												12

-24-

	Outdoor unit	-	PUHY-P600YSMF-C	PUHY-P700YSMF-C
		Variable	PUHY-P400YMF-C	PUHY-P500YMF-C
		capacity unit
Items		Constant	PUHN-P200YMF-C	PUHN-P200YMF-C
		capacity unit
Ambient temp.	Indoor	DB/WB		27/19.0
	Outdoor			35/-

Quantity

Set

5

Condition

Indoor unit

Quantity in operation

5

Model

-

200/200/125/50/25

250/200/125/100/25

Main pipe

5

Piping

m

Branch pipe

5

Total piping length

30

Indoor unit fan notch

-

Hi

Refrigerant volume

kg

28.9

34.9

Outdoor unit

Voltage

V

41.5/39.5/38.0

380 ~ 415

Current

A

48.3/45.9/44.2

opening

Indoor unit

360/360/410/360/270

410/360/410/360/270

Pulse

capacity

Oil return (SLEV)

200

344

Variable

SC (LEV1)

164

179

LEV

Constant

SC (LEV1)

116

capacity

Liquid pipe (LEV2)

60

Pressure

High pressure/Low pressure

MPa

2.11/0.45

2.11/0.44

(after O/S)

(before Main ACC)

Discharge (TH11/TH12)

92/102

97/102

Heat exchanger outlet (TH5)

42

Accumulator

Inlet

6

5

Outlet

8

7

Suction (Comp)

7/13

13/13

Variable

Low pressure saturation

2

1

temperature

(TH2)

capacity

Upper (TH4)

30

unit

Liquid level

Lower (TH3)

2

1

temperature

Shell bottom (Comp)

60/51

65/50

SCC outlet (TH7)

°C

27

Bypass outlet (TH8)

11

10

Sectional

Bypass inlet (TH9a)

3

1

Circulating configuration (αOC)

0.23

CS circuit (TH9b)

16

Discharge temperature (TH11)

102

Liquid level

Upper (TH4)

30

Constant

4

Lower (TH3)

capacity

Shell bottom (Comp)

50

unit

SCC outlet (TH7)

27

Bypass outlet (TH8)

13

Bypass inlet (TH9)

5

Indoor unit

LEV inlet

26

Heat exchanger outlet

12

-25-

	Outdoor unit	-	PUHY-P650YSMF-C	PUHY-P750YSMF-C
		Variable	PUHY-P400YMF-C	PUHY-P500YMF-C
		capacity unit
Items		Constant	PUHN-P250YMF-C	PUHN-P250YMF-C
		capacity unit
Ambient temp.	Indoor	DB/WB		27/19.0
	Outdoor			35/-

				Quantity		Set		5
Condition	Indoor unit			Quantity in operation				5
				Model		-	250/200/125/50/25		250/250/125/100/25
				Main pipe				5
						m
	Piping			Branch pipe				5
				Total piping length				30
	Indoor unit fan notch					-		Hi
	Refrigerant volume					kg	31.9		36.9
Outdoor unit	Voltage					V	44.7/42.5/40.9	380 ~ 415
	Current					A		51.5/48.9/47.1
opening	Indoor unit						410/360/410/360/270		410/410/410/360/270
						Pulse
	capacity		Oil return (SLEV)				200		344
	Variable		SC (LEV1)				164		179
LEV
	Constant		SC (LEV1)					116
	capacity		Liquid pipe (LEV2)					60
Pressure	High pressure/Low pressure					MPa	2.11/0.45		2.11/0.44
	(after O/S)		(before Main ACC)
			Discharge (TH11/TH12)				92/102		97/102
			Heat exchanger outlet (TH5)					42
			Accumulator		Inlet		6		5
					Outlet		8		7
			Suction (Comp)				7/13		13/13
			Low pressure saturation				2		1
	Variable		temperature (TH2)
	capacity		Liquid level		Upper (TH4)			30
	unit
					Lower (TH3)		2		1
temperature			Shell bottom (Comp)				60/51		65/50
			SCC outlet (TH7)			°C		27
			Bypass outlet (TH8)				11		10
Sectional			Bypass inlet (TH9a)				3		2
			Circulating configuration (αOC)					0.23
			CS circuit (TH9b)					16
			Discharge temperature (TH11)					102
			Liquid level		Upper (TH4)			30
	Constant				Lower (TH3)			3
			Shell bottom (Comp)					50
	capacity
	unit
			SCC outlet (TH7)					27
			Bypass outlet (TH8)					12
			Bypass inlet (TH9)					4
	Indoor unit		LEV inlet					26
			Heat exchanger outlet					12

-26-

Outdoor unit

Items								PUHY-400YMF-C									PUHY-500YMF-C
			Indoor						27.0/19.0									27.0/19.0
	Ambient temp.					DB/WB
			Outdoor						35.0/-									35.0/-
			Quantity			Set			5									5
	Indoor unit
			Quantity in operation						5									5
Condition
			Model			-	125	125		100		63	32			125	125		125		100	32
			Main pipe						5									5
	Piping
			Branch pipe			m	10	10		10		10	10			10	10		10		10	10
			Total piping length						55									55
	Indoor unit fan notch					-	Hi	Hi		Hi		Hi	Hi			Hi	Hi		Hi		Hi	Hi
	Refrigerant volume					kg			22.4									27.9
unit	Total current					A		27.6/26.2/25.2									33.7/32.0/30.8
Outdoor
	Voltage					V			380 ~ 415									380 ~ 415
opening	Indoor unit						430	430		380		380	350			430	430		430		380	290
						Pulse
	SC (LEV1)								164									179
LEV
	Oil return (SLEV)												344
Pressure	High pressure/Low pressure					MPa			1.96/0.43									1.96/0.42
	(after O/S)		(before MA)
		Discharge (TH11/TH12)							90/95									95/100
		Heat exchanger outlet (TH5)											42
				Inlet					2									5
		Accumulator
				Outlet					4									5
temperature		Suction (Comp) (No.1/No.2)							4/10									10/10
	Outdoor	Low pressure saturation											3
		temperature			(TH2)
	unit
						°C
				Upper (TH4)									30
Sectional		Liquid level
				Lower (TH3)									3
		Shell bottom (Comp No.1/No.2)							60/51									65/50
		SCC outlet (TH7)											27
		Bypass outlet (TH8)							8									9
		Bypass inlet (TH9)							4									5
	Indoor	LEV inlet											26
	unit	Heat exchanger outlet											10

-27-