Mitsubishi MEE99K029G Service Manual

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AIR CONDITIONERS CITY MULTI

Models PUHY-200YMF-C, 250YMF-C

PUHY-P200YMF-C, P250YMF-C PUY-200YMF-C, 250YMF-C PUY-P200YMF-C, P250YMF-C

PURY-200YMF-C, 250YMF-C PURY-P200YMF-C, P250YMF-C

CMB-P104, P105, P106, P108, P1010, P1013, P1016V-E

Service Handbook

Contents

1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT .... 3

[1] Storage of Piping Material................................................................. 4

[2] Piping Machining............................................................................... 5

[3] Necessary Apparatus and Materials and Notes on Their Handling .. 6

[4] Brazing.............................................................................................. 7

[5] Airtightness T est................................................................................ 8

[6] Vacuuming ........................................................................................ 8

[7] Charging of Refrigerant..................................................................... 9

[8] Dryer ................................................................................................. 9

2 COMPONENT OF EQUIPMENT ........................................................... 10

[1] Appearance of Components ........................................................... 10

[2] Refrigerant Circuit Diagram and Thermal Sensor........................... 18

[3] Electrical Wiring Diagram................................................................ 24

[4] Standard Operation Data ................................................................ 33

[5] Function of Dip SW and Rotary SW................................................ 41

3 TEST RUN ............................................................................................. 47

[1] Before Test Run .............................................................................. 47

[2] Test Run Method ............................................................................. 51

4 GROUPING REGISTRATION OF INDOOR UNITS WITH REMOTE

CONTROLLER....................................................................................... 52

5 CONTROL.............................................................................................. 58

[1] Control of Outdoor Unit ................................................................... 58

[2] Control of BC Controller.................................................................. 63

[3] Operation Flow Chart...................................................................... 64

[4] List of Major Component Functions ................................................ 70

[5] Resistance of Temperature Sensor................................................. 73

6 REFRIGERANT AMOUNT ADJUSTMENT ............................................ 74

[1] Refrigerant Amount and Operating Characteristics ........................ 74

[2] Adjustment and Judgement of Refrigerant Amount ........................ 74

7 TROUBLESHOOTING ........................................................................... 84

[1] Principal Parts................................................................................. 84

[2] BC Controller Disassembly Procedure ..........................................113

[3] Self-diagnosis and Countermeasures Depending on the Check

Code Displayed..............................................................................119

[4] LED Monitor Display ..................................................................... 142

8 PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN

REPAIRING LEAKS .............................................................................161

[1] Location of leaks: Extension piping or indoor units (when cooling)161

[4] Location of leaks: Outdoor unit (when heating) ............................ 163

9 CHECK THE COMPOSITION OF THE REFRIGERANT

(PURY-P200·250YMF-C only) ................................................................164

–1–

Safety precautions

Before installation and electric work

▲

Before installing the unit, make sure you read all the “Safety precautions”.

▲

The “Safety 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 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. : 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 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.

• 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.

–2–

1 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 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, c harge 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 the tools.

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.

• 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.

–3–

[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.

–4–

[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.

–5–

[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.

–6–

[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 br azing 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 br aze and seal both ends of them.

Reasons :

1. The new refrigerant oil is 10 times more hygroscopic than the conv entional 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.

–7–

[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. Pressuriz e 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 bac kflo w of the vacuum pump oil, open the relief valv e on the v acuum 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.

–8–

[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-

der

Cylinder color identification R407C-Gray Charged with liquid refrigerant

R410A-Pink

Valve

der

Valve

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 evapor ation 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. Chec k 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 (For use with R407C).

If any other product is used, the unit will be damaged.

2. Opening the refrigerant circuit after changing to a ne w dryer is less than 1 hour . The replacement of the dryer should be the last operation performed.

–9–

2 COMPONENT OF EQUIPMENT

[1] Appearance of Components

Outdoor unit

• PU(H)Y-(P)200, 250YMF-C

Fan motor

Heatexchanger(rear)

Propeller fan

Heatexchanger(front)

Control Box

Compressor

PUHY-YMF-C PUY-P-YMF-C

4–way valve

SCC

Accumulator

Drier

SCC

Accumulator

Compressor

–10–

• PURY-P200·250YMF-C

Propeller fan

Fan motor

Heat exchanger(rear)

Heat exchanger(front)

Control box

Compressor

PURY-YMF-C PURY-P-YMF-C

4–way valve

SV block

SV6

SV5

SV4

SV3

Accumulator

4–way valve

CV block

Drier

SV block

CS circuit

SV6

SV5

SV4 SV3

Accumulator

CV block

Compressor

–11–

Controller Box

FANCON board

INV board

MAIN board

Noise filter

Choke coil (L2)

Terminal block TB1A Power Source

Terminal block TB3 Transmission

Terminal block TB7 Transmission (Centralized control)

Inteligent Power Module (IPM)

G/A board

Capacitor (C2, C3) (Smoothing capacitor)

Diode stack (DS)

Magnetic contactor (52C)

–12–

MAIN board

• PUHY / PURY

CNTR CNFC1

CNVCC4 Power source 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 3-5 T roub le

CNRS3 Serial transmission to INV board

CN3D

CN20 Power supply

3 L1 1 N

SW4

SW3

SW2 SWU2

SWU1

CN3S

CN3N

LD1 Service LED

SW1

–13–

INV board

CNVDC 1-4 DC-560V

CN15V2 Power supply for IPM control

CNR

CN52C Control for 52C

CNFAN Control for MF1

CNAC2 Power source

1 L2 3 N 5 G

SW1

CNRS2 Serial transmission to MAIN board

CNVCC4 Power supply (5V)

CNL2 Choke coil

CNVCC2 Power supply

1-2 30V, 1-3 30V 4-6 12V, 5-6 5V

CNDR2 Out put to G/A board

CNTH

CNACCT

–14–

FANCON board

CNFAN

G/A board

CNPOW

CNFC2

CNE CNDC1

CN15V1

CNDR1

CNIPM1

–15–

BC controller

CNTR

CN02 M-NET transmission

CN03

CN12 Power supply

1 EARTH 3 N 5 L

SW4 SW2 SW1

–16–

RELAY 10 board

RELAY 4 board

–17–

[2] Refrigerant Circuit Diagram and Thermal Sensor

1PUHY-200YMF-C, 250YMF-C

: Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor

: Strainer SP : Service port ACC : Accumulator

BV1ST1

CJ1

63HS

CJ2

CP1

Indoor unit

TH2

SV1

SV2

BV2

ST2

CP2

SLEV

TH7

ST4

LEV1

HEX2

HEX1

O/S

ST3

TH1

TH6

–18–

CV1

Comp

63H

SCC

TH8

TH5

2PUY-200YMF-C, 250YMF-C

: Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor

: Strainer SP : Service port ACC : Accumulator

BV1ST1

CJ1

63HS

CJ2

CP1

SV1

TH2

SV2

BV2ST2

CP2

SLEV

TH7

ST4

LEV1

HEX2HEX1

O/S

TH6

ST3

–19–

Comp

63H

SCC

TH8

TH5

3PUHY-P200YMF-C, P250YMF-C

: Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor

: Strainer SP : Service port ACC : Accumulator

ST1 BV1

CJ1

63HS

ST5

CJ2

CP1

O/S

Indoor units

63LS

ST3

SV1

SV2

TH1

CV1

Comp

TH10

63H

TH9

Drier

CP4

TH2

SLEV

CP3

ST2 BV2

TH8

TH7

ST4

LEV1

SCC

SV3

HEX 1 HEX 2

TH6

–20–

ST8

SV4

ST9

TH5

4PUY-P200YMF-C, 250YMF-C

ST1 BV1

: Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor

: Strainer SP : Service port ACC : Accumulator

Indoor units

ST2 BV2

CJ1

SV3

63HS

ST5

CJ2

HEX2 HEX1

O/S

63LS

ST3

SV1

TH1

SV2

CV1

Comp

MA SA

TH10

63H

TH9

Drier

TH2

CP3

CV2

SLEV

TH8

TH5

TH7

ST4

LEV1

SCC

TH6

–21–

5PURY-200YMF-C, 250YMF-C

CJ1

Solenoid Valves Block

: Solenoid valve

: Orifice

: Capillary

: Check valve

: Thermal sensor

: Strainer SP : Service port ACC : Accumulator

Distributor

63H

CV1

O/S

TH1

Comp

TH10

ST6

63HS

SV1

CP1

SV2

63LS

CJ2

ACC

SLEV

TH6

HEXb

SVC

SVA SVB

SV3

SV4

HEXf3

SV6

SV5

TH7

CV7

HEXf2

HEXf1

CV2

CV3

CV10

CV9CV8

CV4

CV5

CV6

TH5

ST1

BV1

BV2

Check Valves Block

Gas/liquid separator

TH12

TH15

LEV3

TH16

TH11

LEV1

63HS1

63HS3

BC controller CMB-P104V-E

–22–

TH21

TH22

TH23

LEV

Indoor units

6PURY-P200YMF-C, P250YMF-C

: Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor

: Strainer SP : Service port ACC : Accumulator

ST5

SJ1

63HS

O/S

ST6

SV1

CV1

63H

TH1

Comp

TH10

TH2

TH9

Drier

CP2

CS(Composition Sensing) circuit

CP1

SV2

63LS

CJ2

ACC

SLEV

Solenoid Valves Block

HEXb

TH6

CV9CV8

CV10

SV3

SV4

Distributor

SV6

SV5

TH7

HEXf3

HEXf2

HEXf1

CV4

Check Valves Block

CV6

CV7

BV1

ST1

CV3CV2CV5

TH5

BV2

Gas/liquid separator

TH12

TH15

LEV3

TH11

LEV1

63HS1

63HS3

SVC

SVA SVB

TH21

TH23

TH22

LEV

Indoor units

TH16

BC controller CMB-P104V-E

–23–

SV4

(Heat exchanger capacity control)

Solenoid valve

FB4

X1~10

Motor

(Compressor)

MC1

Inverter

TH6

TH9TH10

SLEV

63LS

321

63HS

TH2

TH1

321

LEV1

TH7TH8TH5

ACCT

-W

BOX BODY

CNE

(2P)

SV3

SV4

X07

X06

12345

(6P)

CN36

342

31245

BOX BODY

High pressure

switch

Crank case heater

(Compressor)

Diode

stack

Noise

Filter

Terminal

Block

Terminal

Block

CNFC2

(6P)

12345

circuit

detection

12345

Blue

Black

White

Red

Blue

Black

Red

White

TB1B

BOX BODY

12 1234

CN06

(2P)

CN34

(6P)

65432

123

CN38

(3P)

X10

X04

X05

21S4

SV2

63H

CN05

(4P)

(2P)

(6P)

CNFC1

CN09

Control circuit board

Blue

Red

White

Black

Brown

Red

Controller Box

BOX BODY

(INV board)

Power circuit board

MF1

(2P)

CN30V

(2P)

CNL2

(14P)

CN15V2

(5P)

CNLV2

(3P)

CNTR

(5P)

CNLV1

(3P)

CN32

(3P)

CNL

(3P)

CNH

(2P)

CN01

THHS

(8P)

CN02

(3P)

CN03

(3P)

CNFAN

(7P)

CNRS3

(6P)

CNVCC2

(6P)

CNVCC3

(2P)

CNVCC4

(7P)

CNRS2

X10

X01

X02

52C

32165

1234567

12143

23 12 123 1

Black

Red

White

CNTR1

1A F

250VAC

T01

DCL

52C

ZNR4

–~

TB7

TB3

controller

remote

Indoor and

Connect to

Yellow

Green/

Blue

Black

Red

White

Red White Black

2A F

250VAC

TB1A

CH1

SV1

(MAIN board)

50/60Hz

380/400/415V

3N~

Power source

4:Compressor ON/OFF

5:Trouble

12V

X01

X02

(2P)

CNTH

(4P)

CNVDC

(3P)

CN52C

(3P)

CNR

(3P)

CNX10

(3P)

CNS2

(5P)

CNAC2

(5P)

CN51

(2P)

CNS1

(2P)

CNVCC4

122

322

(3P)

CN20

(3P)

CN3D

(3P)

CN33

2A F

250VAC

F01

5322413

625

543215432132132

1122

763211

Refer to the service handbook

about the switch operations.

CNDC1

(4P)

1234

CNDR2

(9P)

1210 11 13 14

543216789 54321

6789

1210 11 13 14543216789 54321 6789

Yellow Orange

Purple Black

White Gray

123

Fan motor

(Heat exchanger)

UVW

Gate amp board

(G/A board)

132

CN3S

(3P)

FB1

FB2

FB3

IPM

CNDR1

(9P)

CN15V1

(14P)

Orange Brown

CNACCT

(4P)

(5P)

CNFAN

CN04

no fuse breaker

50A

30APU(H)Y-(P)200YMF-C

PU(H)Y-(P)250YMF-C

ACCT

-U

(3P)

CN3N

231

DEMAND

NIGHT MODE

OFF

1-2

CN3D

OFF

1-3

OFF

Mode

Auto

Normal

changeover

HEAT

COOL

Green

Red White Black

L1 L2 L3

32451

CNPOW

(5P)

(Fancon board)

Fan control board

F01 250VAC 6.3AF

F02 250VAC 6.3AF

F03 250VAC 6.3AF

MF1

52C

ZNR4

ACCT-U, W

DCL

Symbol Name

21S4

SV1, SV2

(Sub-cool coil bypass)

LEV1 Electronic expansion valve

IPM

SLEV

63HS

63LS

SV3

TH9

at Sub-cool coil

bypass outlet temp. detectTH8

TH7

TH6

TH5

TH1

TH2

TH10

THHS

FB1~4

“

2” are not existed

PUY - 200/250YMF-C

PUHY- 200/250YMF-C

“

1” and “

2” are not existed

“

1” are not existed

PUHY-P200/250YMF-C

PUY -P200/250YMF-C

All exists

Appliance Name

Solenoid valve(Discharge-suction bypass)

4-way valve

Electronic expansion valve(Oil return)

High pressure sensor

Low pressure sensor

(Heat exchanger capacity control)

Solenoid valve

Varistor

(Power factor improvement)

DC reactor

Current Sensor

Ferrite core

Fan motor(Radiator panel)

(Inverter main circuit)

Magnetic contactor

Choke coil(Transmission)

Intelligent power module

Discharge pipe temp. detect

Radiator panel temp. detect

Compressor shell temp.

High pressure liquid temp.

OA temp. detect

Pipe temp. detect

Saturation evapo. temp. detect

Thermistor

Earth terminal

Aux. relay

liquid outlet temp. detect

at Sub-cool coil

Accumulator liquid level detect

[3] Electrical Wiring Diagram

1 PU(H)Y-(P)200·250YMF-C

–24–

2 PURY-(P)200·250YMF-C

FB4

MC1

Black

White

Red

Green

no fuse breaker

30A

PURY-(P)250YMF-C

PURY-(P)200YMF-C

50A

NIGHT MODE

TH5

TH7

CN04

CNFAN

(5P)

(4P)

CNACCT

Brown

Orange

(14P)

CN15V1

(9P)

CNDR1

IPM

FB3

FB2

FB1

L3L2L1

(Fancon board)

Fan control board

(G/A board)

Gate amp board

WVU

43215

432

54321

Fan motor

(Heat exchanger)

432

Gray

White

Black

Purple

Orange

Yellow

9876

12345987612345

14131110 12

1210 11 1314

(9P)

CNDR2

54321 6789 54321

4321

(4P)

CNDC1

Refer to the service handbook

about the switch operations.

243

1123 67

221123712631523445321

526314223

F01

250VAC

2A F

CN33

(3P)

CN3D

(3P)

CN20

(3P)

223

221

CNVCC4

(2P)

CNS1

(2P)

CN51

(5P)

CNAC2

(5P)

CNS2

(3P)

CNX10

(3P)

CNR

(3P)

CN52C

(3P)

CNVDC

(4P)

CNTH

(2P)

X02

X01

12V

5 : Trouble

4 : Compressor ON/OFF

Power source

3N~

380/400/415V

50/60Hz

(MAIN board)

SV1

CH1

TB1A

250VAC

2A F

123

TH1

TH2

Black

White

Red

63HS

123

Black

White

Red

63LS

SLEV

White

Red

Black

Blue

Green/

Yellow

Connect to

Indoor and

remote

controller

TB3

TB7

~ –

ZNR4

52C

DCL

T01

250VAC

1A F

CNTR1

White

Motor

(Compressor)

Red

Black

13212

2341217654321

56123

X02

X01

X10

CNRS2

(7P)

CNVCC4

(2P)

CNVCC3

(6P)

CNVCC2

(6P)

CNRS3

(7P)

CNFAN

(3P)

CN03

(3P)

CN02

(8P)

THHS

CN01

(2P)

CNH

(3P)

CNL

(3P)

CN32

(3P)

CNLV1

(5P)

CNTR

(3P)

CN15V2

(14P)

CNL2

(2P)

CN30V

(2P)

MF1

Power circuit board

(INV board)

BOX BODY

Inverter

Controller Box

Red Brown

Black

White

Red

Blue

Control circuit board

TH10

CN09

CNFC1

(6P)

TH9

(2P)

CN37

(6P)

65432

X08

X09

CN36

(6P)

65432

X06

X07

(4P)

CN05

TH6

63H

SV2

21S4

X05

X04

X10

(3P)

CN38

321

12345

(6P)

CN34

(2P)

CN06

432121

BOX BODY

TB1B

White

Red

Black

Blue

Red

White

Black

Blue

L1L2L3

65432

detection

circuit

SV4

SV3

SV6

SV5

65432

(6P)

CNFC2

(5P)

CNPOW

Terminal

Block

Terminal

Block

Noise

Filter

Diode

stack

Crank case heater

(Compressor)

High pressure

switch

BOX BODY

DEMAND

BOX BODY

(2P)

CNE

BOX BODY

ACCT

-W

ACCT

-U

52C

F02 250VAC 6.3AF

F03 250VAC 6.3AF

F01 250VAC 6.3AF

L1 L2

“

1” are not existed

PURY-P200/250YMF-C

PURY- 200/250YMF-C

All exists

Appliance Name

SV1, SV2 Solenoid valve(Discharge-suction bypass)

4-way valve21S4

Electronic expansion valve(Oil return)

High pressure sensor

Low pressure sensor63LS

63HS

SLEV

(Heat exchanger capacity control)

Solenoid valve

SV3~6

Varistor

NameSymbol

DCL

(Power factor improvement)

DC reactor

ACCT-U, W

Current Sensor

ZNR4

FB1~4 Ferrite core

Fan motor(Radiator panel)

(Inverter main circuit)

52C

MF1

Magnetic contactor

Choke coil(Transmission)

Intelligent power moduleIPM

Discharge pipe temp. detect

Radiator panel temp. detect

Compressor shell temp.

High pressure liquid temp.

OA temp. detect

Pipe temp. detect

Saturation evapo. temp. detect

Thermistor

THHS

TH10

TH9

TH6

TH5

TH2

TH1

Earth terminal

X1, 2, 4~10 Aux. relay

TH7

liquid outlet temp. detect

at Sub-cool coil

LD Accumulator liquid level detect

–25–

Symbol explanation

EARTH

Terminal block

(for Transmission)

TB02

Terminal block

(for power source)

TB01

NameSymbol

Solenoid valve

Expansion valve

Thermister sensor

Transformer

NameSymbol

SV1 4A

SV1 4B

SV1 4C

SVM

TH11 16

LEV1,3

PS1,3 Pressure sensor

Transmission line

Shield wire

/N 220V 240V 50Hz

Power source

BC Board

LEV1

TB01

SVM

SV4B

SV4A

SV4C

SV3B

SV3A

SV3C

SV2B

SV2A

SV2C

SV1C

SV1A

SV1B

}

CNTR

CN02

CN12

153

X30

X31

X32

X33

X21

}

DC 30V

654321654321

LEV3

CNP1

CNP3

12321

CN03

CN13

CN10

CN11

CN07 CN05

TH11

TH12

TH15

TH16

PS1

PS3

20 22V

TB02

CN26

CN27

CN28

CN29

TB01

220 240V

CN36

∗1

Note:1.TB02 is terminal block for transmission.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

3 CMB-P104V-E

–26–

Symbol explanation

EARTH

Terminal block

(for Transmission)

TB02

Terminal block

(for power source)

TB01

NameSymbol

Solenoid valve

Expansion valve

Thermister sensor

Transformer

NameSymbol

SV1 5A

SV1 5B

SV1 5C

SVM

TH11 16

LEV1,3

PS1,3 Pressure sensor

Transmission line

Shield wire

/N 220V 240V 50Hz

Power source

BC Board

LEV1

TB01

SV4B

SV4A

SV4C

SV3B

SV3A

SV3C

SV2B

SV2A

SV2C

SV1C

SV1A

SV1B

}

CNTR

CN02

CN12

153

X30

X31

X32

X33

X21

}

DC 30V

654321654321

LEV3

CNP1

CNP3

12321

CN03

CN13

CN10

CN11

CN07 CN05

TH11

TH12

TH15

TH16

PS1

PS3

20 22V

TB02

CN26

CN27

CN28

CN29

TB01

220 240V

SV5C

SV5A

SV5B

X10

X34

CN30

SVM

CN36

∗1

Note:1.TB02 is terminal block for transmission.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

4 CMB-P105V-E

–27–

EARTH

Transmission line

Shield wire

/N 220V 240V 50Hz

Power source

BC Board

LEV1

TB01

SV6B SV6A SV6C

SV5C

SV5A

SV5B

SV4B

SV4A

SV4C

SV3B

SV3A

SV3C

SV2B

SV2A

SV2C

SVM

SV1C

SV1A

SV1B

}

4321

1234

CN38

CNTR

CN02

CN12

153

CNVCC1

X30

X31

X32

X33

X10

X34

X12

X11

X35

X21

}

DC 30V

654321654321

LEV3

CNP1

CNP3

12321

CN51 CN50

CNOUT 1

CNOUT 3

CN03

CN13

CN10

CN11

CN07 CN05

TH11

TH12

TH15

TH16

PS1

PS3

20 22V

TB02

CN26

CN27

CN28

CN29

CN30

CN31

TB01

220 240V

CN36

Symbol explanation

Terminal block

(for Transmission)

TB02

Terminal block

(for power source)

TB01

NameSymbol

Solenoid valve

Expansion valve

Thermister sensor

Transformer

NameSymbol

SV1 6A

SV1 6B

SV1 6C

SVM

TH11 16

LEV1,3

PS1,3 Pressure sensor

∗1

7654321123456

Note:1.TB02 is terminal block for transmission.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

5 CMB-P106V-E

–28–

EARTH

}

Power source

}}

Power source

/N 220V 240V 50Hz

Transmission line

Shield wire

SVM

BC Board

CN38

CNTR

CN50

CN51

7654321123456

CN02

CN12

153

CNVCC1

X30

X31

X32

X33

X10

X34

X12

X11

X35

X21

}

DC 30V

654321654321

LEV3 LEV1

CNP1

CNP3

123

CN03

CN13

CN10

CN11

CN07 CN05

CN36

TH11

TH12

TH15

TH16

PS1

PS3

20 22V

TB02

CN26

CN27

CN28

CN29

CN30

CN31

TB01

220 240V

LEV1

7654321

TB01

SV6B SV6A SV6C

RELAY4 Board

SV5C

SV5A

SV5B

SV4B

SV4A

SV4C

SV3B

SV3A

SV3C

SV2B

SV2A

SV2C

CN32

CN33

CN39

SV7C

SV7A

SV7B

SV8C

SV8A

SV8B

SV1C

SV1A

SV1B

X14

X13

X36

X37 X15 X16

98765432116 15 1011121314

12345678910111213141516

CN52

75317531

Symbol explanation

Terminal block

(for Transmission)

TB02

Terminal block

(for power source)

TB01

NameSymbol

Solenoid valve

Expansion valve

Thermister sensor

Transformer

NameSymbol

SV1 8A

SV1 8B

SV1 8C

SVM

TH11 16

LEV1,3

PS1,3 Pressure sensor

CNOUT 1

CNOUT 3

∗1

Note:1.TB02 is terminal block for transmission.

∗1

Never connect power line to it.

∗1

:SVM is not built in depending on models.

6 CMB-P108V-E

–29–

EARTH

}

Power source

}}

Power source

/N 220V 240V 50Hz

Transmission line

Shield wire

SV10B SV10A SV10C

SV9B SV9A SV9C

BC Board

CN38

CNTR

CN50

CN51

7654321123456

CN02

CN12

153

CNVCC1

X30

X31

X32

X33

X10

X34

X12

X11

X35

X21

}

DC 30V

654321654321

LEV3 LEV1

CNP1

CNP3

123

CN03

CN13

CN10

CN11

CN07 CN05

CN36

TH11

TH12

TH15

TH16

PS1

PS3

20 22V

TB02

CN26

CN27

CN28

CN29

CN30

CN31

TB01

220 240V

LEV1

7654321123456

CN35

TB01

SV6B SV6A SV6C

SVM

RELAY4 Board

SV5C

SV5A

SV5B

SV4B

SV4A

SV4C

SV3B

SV3A

SV3C

SV2B

SV2A

SV2C

CN32

CN33

CN34

CN39

SV7C

SV7A

SV7B

SV8C

SV8A

SV8B

SV1C

SV1A

SV1B

X14

X13

X36

X37 X15 X16

98765432116 15 1011121314

12345678910111213141516

X18

X17

X38

X39 X19 X20

CN52CN53

5731753175317533 31

Symbol explanation

Terminal block

(for Transmission)

TB02

Terminal block

(for power source)

TB01

NameSymbol

Solenoid valve

Expansion valve

Thermister sensor

Transformer

NameSymbol

SV1 10A

SV1 10B

SV1 10C

SVM

TH11 16

LEV1,3

PS1,3 Pressure sensor

CNOUT 1

CNOUT 3

∗1

Note:1.TB02 is terminal block for transmission.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

7 CMB-P1010V-E

–30–

EARTH

TB02

TB01

Name

Symbol

Terminal block

(for Transmission)

Solenoid valve

Terminal block

(for power source)

Pressure sensor

Expansion valve

Thermister sensor

Transformer

Name

SV1~13A

SV1~13B

SV1~13C

SVM

Symbol

TH11~16

LEV1,3

PS1,3

DC 30V

}

Shield wire

Transmission line

Power source

}

Power source

~/N 220V~240V 50Hz

RELAY10

Board

BC Board

CN39

654321 1234567

CN51

CN50

135

CN12

CNOUT3

CNOUT1

1571571357

CNVCC2

CN42

X46

X47

X48

CNOUT2

CNOUT4

CN41

CN40

X41

X44

X40

X43

X42

X45

X20

X18

X19

X17

X39

X38

CNVCC1

X16

X15

X37

X36 X13 X14

X30

X31

X32

X33

X10

X34

X12

X11

X35

X21

5432

LEV3 LEV1

CNP1

CNP3

12321

CN03

CN02

CN13

CN10

CN11

CN07 CN05

CN34

CN33

1357

CN32

TH11

TH12

TH15

TH16

TB02

CN38

CN26

CN27

CN28

CN29

CN30

CN31

TB01

CN35

CNTR

SV1B

SV1A

SV1C

SV2C

SV2A

SV2B

SV3C

SV3A

SV3B

SV4C

SV4A

SV4B

SV5B

SV5A

SV5C

SV9C

SV9A

SV9B

SV10C

SV10A

SV10B

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

14 13 12 11 101516 123456789

SV8B SV8A SV8C

SV7B SV7A SV7C

SVM

SV6C

SV6A

SV6B

SV11C

SV11A

SV11B

SV12C

SV12A

SV12B

SV13C

SV13A

SV13B

PS1

PS3

Note : 1. TB02 is transmission terminal block.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

20 22V 220 240V

CN36

∗1

8 CMB-P1013V-E

–31–

EARTH

TB02

TB01

Name

Symbol

Terminal block

(for Transmission)

Solenoid valve

Terminal block

(for power source)

Pressure sensor

Expansion valve

Thermister sensor

Transformer

Name

SV1~16A

SV1~16B

SV1~16C

SVM

Symbol

TH11~16

LEV1,3

PS1,3

DC 30V

}

Shield wire

Transmission line

Power source

}

Power source

~/N 220V~240V 50Hz

CN39

654321 1234567

CN51

CN50

135

CN12

CNOUT3

CNOUT1

1571571357

CNVCC2

CN42

X46

X47

X48

CNOUT2

CNOUT4

CN41

CN40

X41

X44

X40

X43

X42

X45

X20

X18

X19

X17

X39

X38

CNVCC1

X16

X15

X37

X36 X13 X14

X30

X31

X32

X33

X10

X34

X12

X11

X35

X21

5432

LEV3 LEV1

CNP1

CNP3

12321

CN03

CN02

CN13

CN10

CN11

CN07 CN05

CN34

CN33

1357

CN32

TH11

TH12

TH15

TH16

TB02

CN38

CN26

CN27

CN28

CN29

CN30

CN31

TB01

CN35

CNTR

SV1B

SV1A

SV1C

SV2C

SV2A

SV2B

SV3C

SV3A

SV3B

SV4C

SV4A

SV4B

SV5B

SV5A

SV5C

SV9C

SV9A

SV9B

SV10C

SV10A

SV10B

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

14 13 12 11 101516 123456789

SV8B SV8A SV8C

SV7B SV7A SV7C

SVM

SV6C

SV6A

SV6B

SV11C

SV11A

SV11B

SV12C

SV12A

SV12B

SV13C

SV13A

SV13B

PS1

PS3

∗1

Note : 1. TB02 is transmission terminal block.

Never connect power line to it.

∗1

:SVM is not built in depending on models.

X57

X53

X52

X56

X55

CN45

CN44

CN43

X50

SV14C

SV14A

SV14B

SV15A

SV15B

SV16C

SV16A

SV16B

SV15C

X54

X51

X49

RELAY10

Board

BC Board

20 22V 220 240V

CN36

9 CMB-P1016V-E

–32–

[4] Standard Operation Data

(1) Cooling operation 1 PU(H)Y-200·250YMF-C

Items

Ambient temp.

Indoor unit

Condition

Piping

Indoor unit fan notch Refrigerant volume Total current

Volts/Frequency

Outdoor unit

Indoor unit

Outdoor unit

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

DB/WB

Set

–

A V

V/Hz

PUHY-200YMF-C

PUY-200YMF-C

PUHY-250YMF-C

PUY-250YMF-C

27.0/19.0 27.0/19.0

35.0/24.0 35.0/24.0 44 44

63 63 50 25 125 40 63 25

10 10 10 10 10 10 10 10

45 45

Hi Hi Hi Hi Hi Hi Hi Hi

11.2 12.7

14.5 13.3 18.3 16.8 380 415 380 415

270/75 270/75 340/95 340/95

440 440 380 280 430 350 440 280

SC (LEV1) Oil return (SLEV)

LEV opening

High pressure/Low pressure (after O/S) (before MA)

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Inlet

Accumulator

Outlet

Outdoor unit

Suction (Comp) TH2 Shell bottom (Comp)

Sectional temperature

SCC outlet (TH7) Bypass outlet (TH8)

Indoor unit

LEV inlet Heat exchanger outlet

Pulse

kg/cm

(MPa)

˚C

130 140 235 235

22.0/4.80 20.3/4.7

(2.16/0.47) (1.99/0.46)

93 95 40 42

75 97 710

64 69 60 27 27

86 26 26 10 10

–33–

PU(H)Y-P200·250YMF-C

Items

Ambient temp.

Indoor unit

Condition

Piping

Indoor unit fan notch Refrigerant volume Total current

Volts/Frequency

Outdoor unit

Indoor unit

Outdoor unit

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

DB/WB

Set

–

A V

V/Hz

PUHY-P200YMF-C

PUY-P200YMF-C

PUHY-P250YMF-C

PUY-P250YMF-C

27.0/19.0 27.0/19.0

35.0/24.0 35.0/24.0 44 44

63 63 50 25 125 40 63 25

10 10 10 10 10 10 10 10

45 45

Hi Hi Hi Hi Hi Hi Hi Hi

11.7 13.2

14.5 13.3 18.3 16.8 380 415 380 415

270/75 270/75 340/95 340/95

440 440 380 280 430 350 440 280 SC (LEV1) Oil return (SLEV)

LEV opening

High pressure/Low pressure (after O/S) (before MA)

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Inlet

Accumulator

Outlet

Outdoor unit

Suction (Comp) CS circuit (TH2) CS circuit (TH9) Shell bottom (Comp)

Sectional temperature

SCC outlet (TH7) Bypass outlet (TH8)

Indoor unit

LEV inlet Heat exchanger outlet

Pulse

kg/cm

(MPa)

˚C

130 140 235 235

20.5/4.0 21.9/3.9

(2.01/0.39) (2.15/0.38)

96 96 40 42

77 10 10 12 15 –1 –1 11 11 80 85 27 27

86 26 26 10 10

αOC

0.23 0.23

–34–

PURY-200·250YMF-C

Items

Ambient temp.

Indoor Outdoor Quantity

Indoor unit

Quantity in operation Model Main pipe

Piping

Condition

Branch pipe

Total piping length Indoor unit fan notch Refrigerant volume

Compressor volts / Frequency

Outdoor unit Indoor unit

Outdoor unit

DB/WB

Q’ty

–

V/Hz

PURY-P200YMF-C PURY-P250YMF-C

27.0/19.0 27.0/19.0

35.0/24.0 35.0/24.0 44 44

63 63 50 25 125 40 63 25

55555555

25 25

Hi Hi Hi Hi Hi Hi Hi Hi

13.9 14.4

380 415 380 415

270/75 270/75 340/95 340/95

14.5 13.3 18.3 16.8

330 460 430 300 410 330 460 300 BC controller (1, 3) Oil return

LEV opening

High pressure/Low pressure

BC controller liquid/Intermediate

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Outdoor unit

Accumulator

Suction (Comp) Shell bottom (Comp)

Sectional temperature

Indoor unit

LEV inlet Heat exchanger outlet

Inlet Outlet

Pulse

kg/cm

(MPa)

˚C

2000 140 2000 150

235 235

20.7/5.0 19.4/4.0

(2.03/0.49) (1.90/0.39)

19.6/19.6 18.3/18.3

(1.92/1.92) (1.79/1.79)

107 110

50 47

77 10 10 12 12 75 70 26 30 15 15

–35–

PURY-P200·250YMF-C

Items

Indoor

Ambient temp.

Outdoor Quantity

Indoor unit

Quantity in operation Model Main pipe

Piping

Condition

Branch pipe

Total piping length Indoor unit fan notch Refrigerant volume

Compressor volts / Frequency

Outdoor unit Indoor unit

Outdoor unit

DB/WB

Q’ty

–

V/Hz

PURY-P200YMF-C PURY-P250YMF-C

27.0/19.0 27.0/19.0

35.0/24.0 35.0/24.0 44 44

63 63 50 25 125 40 63 25

55555555

25 25

Hi Hi Hi Hi Hi Hi Hi Hi

14.4 14.9

380 415 380 415

270/75 270/75 340/95 340/95

14.5 13.3 18.3 16.8

330 460 430 300 410 330 460 300

BC controller (1, 3) Oil return

LEV opening

High pressure/Low pressure

BC controller liquid/Intermediate

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Outdoor

Accumulator

unit

Suction (Comp) CS circuit (TH2)

Sectional temperature

Indoor unit

Shell bottom (Comp) LEV inlet Heat exchanger outlet

αOC

Inlet Outlet

Pulse

kg/cm

(MPa)

˚C

2000 140 2000 150

235 235

23.5/5.3 23.0/5.1

(2.30/0.52) (2.25/0.50)

22.4/22.4 21.9/21.9

(2.20/2.20) (2.15/2.15)

97 105 50 47

10 10 12 12

75 70 26 30 15 15

0.23 0.23

–36–

2 Heating operation PUHY-200·250YMF-C

Items

Ambient temp.

Indoor unit

Condition

Piping

Indoor unit fan notch Refrigerant volume Total current

Volts/Frequency

Outdoor unit

Indoor unit

Outdoor unit

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

DB/WB

Set

–

A V

V/Hz

PUHY-200YMF-C PUHY-250YMF-C

20.0/– 20.0/–

7.0/6.0 7.0/6.0 44 44

63 63 50 25 125 40 63 25

10 10 10 10 10 10 10 10

45 45

Hi Hi Hi Hi Hi Hi Hi Hi

11.2 12.7

13.4 12.3 17.1 15.6 380 415 380 415

280/83 280/83 355/102 355/102

510 510 450 280 440 420 510 280 SC (LEV1) Oil return (SLEV)

LEV opening

High pressure/Low pressure (after O/S) (before MA)

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Inlet

Outdoor unit

Accumulator

Outlet Suction (Comp) TH2

Sectional temperature

Indoor unit

Shell bottom (Comp) Heat exchanger outlet LEV inlet

Pulse

kg/cm

(MPa)

˚C

150 235

17.5/3.7 17.5/3.7

(1.72/0.36) (1.72/0.36)

80 85

–1 –2 –1 –2 –1 –2 –2 –2

50 60 71 71 33 33

–37–

PUHY-P200·250YMF-C

Items

Ambient temp.

Indoor unit

Condition

Piping

Indoor unit fan notch Refrigerant volume Total current

Volts/Frequency

Outdoor unit

Indoor unit

Outdoor unit

Indoor Outdoor Quantity Quantity in operation Model Main pipe Branch pipe Total piping length

DB/WB

Set

–

A V

V/Hz

PUHY-P200YMF-C PUHY-P250YMF-C

20.0/– 20.0/–

7.0/6.0 7.0/6.0 44 44

63 63 50 25 125 40 63 25

10 10 10 10 10 10 10 10

45 45

Hi Hi Hi Hi Hi Hi Hi Hi

11.7 13.2

13.4 12.3 17.1 15.6 380 415 380 415

270/75 270/75 340/95 340/95

510 510 450 280 440 420 510 280 SC (LEV1) Oil return (SLEV)

LEV opening

High pressure/Low pressure (after O/S) (before MA)

Pressure

Discharge (TH1) Heat exchanger inlet (TH5)

Inlet

Accumulator Outdoor unit

Suction (Comp)

Outlet

CS circuit (TH2)

CS circuit (TH9)

Sectional temperature

Shell bottom (Comp)

Indoor unit

Heat exchanger outlet

LEV inlet αOC

Pulse

kg/cm

(MPa)

˚C

150 150

18.5/3.7 21.4/3.7

(1.81/0.36) (2.10/0.36)

75 78

–1 –1 –2 –2 –2 –2 –3 –3 –3 –3

00 60 70 80 80 39 39

0.28 0.28

–38–

PURY-200·250YMF-C

Items

Indoor

Ambient temp.

Outdoor Quantity

Indoor unit

Quantity in operation Model Main pipe

Piping

Condition

Branch pipe

Total piping length Indoor unit fan notch Refrigerant volume

Compressor volts / Frequency

Outdoor unit total current Indoor unit

Outdoor unit

DB/WB

Q’ty

–

V/Hz

PURY-200YMF-C PURY-250YMF-C

20.0/– 20.0/–

7.0/6.0 7.0/6.0 44 44

63 63 50 25 125 40 63 25

55555555

25 25

Hi Hi Hi Hi Hi Hi Hi Hi

13.9 14.4

380 415 380 415

285/85 285/85 360/105 360/105

13.4 12.3 17.1 15.6

600 950 750 400 750 600 950 400

BC controller (1, 3) Oil return

LEV opening

High pressure/Low pressure

BC controller liquid/Intermediate

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Outdoor unit

Accumulator

Suction (Comp) Shell bottom (Comp)

Sectional temperature

Indoor unit

LEV inlet Heat exchanger outlet

Inlet Outlet

Pulse

kg/cm

(MPa)

˚C

60 700 60 800

150 235

18.5/3.6 18.0/3.7

(1.81/0.35) (1.76/0.36)

17.5/14.0 17.0/14.0

(1.72/1.37) (1.67/1.37)

100 95

–2 –1 –1 –1 –4 –2 –1 –1

45 40 38 40 80 85

–39–

PURY-P200·250YMF-C

Items

Indoor

Ambient temp.

Outdoor Quantity

Indoor unit

Quantity in operation Model Main pipe

Piping

Condition

Branch pipe

Total piping length Indoor unit fan notch Refrigerant volume

Compressor volts/Frequency

Outdoor unit total current Indoor unit

Outdoor unit

DB/WB

Q’ty

–

V/Hz

PURY-P200YMF-C PURY-P250YMF-C

20.0/– 20.0/–

7.0/6.0 7.0/6.0 44 44

63 63 50 25 125 40 63 25

55555555

25 25

Hi Hi Hi Hi Hi Hi Hi Hi

14.4 14.9

380 415 380 415

280/80 280/80 340/95 340/95

13.4 12.3 17.1 15.6

600 950 750 400 750 600 950 400

BC controller (1, 3) Oil return

LEV opening

High pressure/Low pressure

BC controller liquid/Intermediate

Pressure

Discharge (TH1) Heat exchanger outlet (TH5)

Outdoor

Accumulator

unit

Suction (Comp) CS circuit

Sectional temperature

Indoor unit

Shell bottom (Comp) LEV inlet Heat exchanger outlet

αOC

Inlet Outlet

(TH2)

Pulse

kg/cm

(MPa)

˚C

60 700 60 800

150 235

18.5/3.6 18.0/3.7

(1.96/0.38) (1.86/0.34)

17.5/14.0 17.0/14.0

(1.86/1.57) (1.76/1.47)

100 95

–2 –1 –1 –1 –4 –2 –1 –1

45 40 38 40 80 85

0.28 0.28

–40–

[5] Function of Dip SW and Rotary SW

(1) Outdoor unit 1 PU(H)Y-200·250YMF-C

Switch Function

SWU

1~2

Unit address setting

SW1

1~8

For self diagnosis/ operation monitoring

9~10

SW2

SW3

Centralized control switch

Deletion of connection information.

Deletion of error history.

4 5 6

Disregard ambient air sensor errors, liquid overflow errors.

Forced defrosting

Defrost prohibited timer

SW3-2 Function valid/ invalid

Indoor unit test operation

Defrosting start temperature of TH5.

Defrosting end temperature of TH5. Opening angle of IC except when heater thermostat is ON during defrosting.

Function according to switch operation Switch set timing

When off When on When off When on

Set on 51~100 with the dial switch.

LED monitering display

–

Centralized control not connected. Storing of refrigeration system connection information.

– –

Errors valid.

Ordinary control

SW3-2 Function invalid

Stop all indoor units.

–

– –

43 min.

– –

-2°C

8°C

(no operation)

–

Centralized control connected. Deletion of refrigeration system connection information. Deletion

– –

Disregard errors.

Start forced defrosting.

90 min.

– –

SW3-2 Function valid

All indoor units test operation ON.

0°C

15°C

2000

Before power is turned on. During normal operation when power is on. Should be set on OFF. Before power is turned on.

Before power is turned on.

During normal operation when power is on.

During normal operation when power is on. (Except during defrosting)

During normal operation when power is on. When SW3-1 is ON after power is turned on. During normal operation when power is on. During normal operation when power is on. (Except during defrosting)

– –

10 minutes or more after compressor starts.

– –

5 6

Models

Target Pd (High pressure)

8 9

SW4

Note:

• SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.

• If the address is set from 01 to 50, it automatically becomes 100.

Models 1 2 3

–

– –

– – –

–

PUHY-YMF-C

18kg/cm2G

(1.76MPa)

– –

Model 200

– – –

–

PUY-YMF-C

20kg/cm2G

(1.96MPa)

– –

Model 250

– – –

When switching on the power.

–

During normal operation when power is on.

– –

When switching on the power.

– – –

–41–

2 PUHY-P200·250YMF-C

Switch Function

SWU

1~2

Unit address setting

SW1

1~8

For self diagnosis/ operation monitoring

9~10

SW2

SW3

Centralized control switch

Deletion of connection information.

Deletion of error history .

4 5 6

Disregard ambient air sensor errors, liquid overflow errors.

Forced defrosting

Defrost prohibited timer

SW3-2 Function valid/ invalid

Indoor unit test operation

Defrosting start temperature of TH5.

Defrosting end temperature of TH5. Opening angle of IC except when heater thermostat is ON during defrosting.

Function according to switch operation Switch set timing

When off When on When off When on

Set on 51~100 with the dial switch.

LED Monitering Display

–

Centralized control not connected. Storing of refrigeration system connection information.

– –

Errors valid.

Ordinary control

– –

SW3-2 Function invalid

Stop all indoor units.

–

– –

39 min.

– –

– 4°C

8°C

(no operation)

–

Centralized control connected. Deletion of refrigeration system connection information. Deletion

– –

Disregard errors.

Start forced defrosting.

90 min.

– –

SW3-2 Function valid

All indoor units test operation ON.

–1°C

15°C

2000

Before power is turned on. During normal operation when power is on. Should be set on OFF. Before power is turned on.

Before power is turned on.

During normal operation when power is on.

During normal operation when power is on. (Except during defrosting)

During normal operation when power is on. When SW3-1 is ON after power is turned on. During normal operation when power is on. During normal operation when power is on. (Except during defrosting)

– –

10 minutes or more after compressor starts.

– –

5 6

Models

Target Tc (High pressure)

at Heating 8 9

Models

SW4

Note:

SW4-2 Function valid/

invalid 2

Configuration compensa-

tion value 3

• SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.

• If the address is set from 01 to 50, it automatically becomes 100.

–

– –

Changes as shown below by on → off change 0% → 3% → 6% → 9% → 12% → –6% → –3% → 0%

–

PUHY-P-YMF-C

49˚C

– –

Model P200

Invalid

–

PUY-P-YMF-C

53˚C

– –

Model P250

Valid

–

When switching on the power. During normal operation when power is on.

– –

When switching on the power. During normal operation when power is on. when SW4-1 in ON.

–

–42–

3 PURY-200·250YMF-C

Switch Function

SWU

1~2

SW1

SW2

SW3

SW4

Unit address setting

1~8

For self diagnosis/ operation monitoring

9~10

Centralized control switch

Deletion of connection information.

Deletion of error history.

4 5 6

Disregard ambient air sensor errors, liquid overflow errors.

Forced defrosting

Defrost prohibited timer

SW3-2 Function valid/ invalid

Indoor unit test operation

Defrosting start temperature of TH7.

Defrosting end tempera-

ture of TH5. 5 6

Pump down operation

Target Td (High pressure)

at Heating 8 9

Models 1 2 3

Function according to switch operation Switch set timing

When off When on When off When on

Set on 51~100 with the dial switch.

LED monitering display

–

Centralized control not connected. Storing of refrigeration system connection information.

– –

Errors valid.

Ordinary control

– –

SW3-2 Function invalid

Stop all indoor units.

–

– –

– – –

–

– –

43 min.

– –

–6°C

8°C

–

Invalid

49˚C

– –

Model 200

– – –

Centralized control

–

connected. Deletion of refrigeration system connection information. Deletion

– –

Disregard errors.

Start forced defrosting.

90 min.

– –

SW3-2 Function valid

All indoor units test operation ON.

–3°C

15°C

–

Valid

53˚C

– –

Model 250

– – –

Before power is turned on. During normal operation when power is on. Should be set on OFF. Before power is turned on.

Before power is turned on.

During normal operation when power is on.

During normal operation when power is on. (Except during defrosting)

During normal operation when power is on. When SW3-1 is ON after power is turned on. During normal operation when power is on. During normal operation when power is on. (Except during defrosting)

During compressor stop when power is on. During normal operation when power is on.

When switching on the power.

– –

10 minutes or more after compressor starts.

– –

–

– –

– – –

Note:

• SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.

• If the address is set from 01 to 50, it automatically becomes 100.

–43–

4 PURY-P200·250YMF-C

Switch Function

SWU

1~2

Unit address setting

SW1

1~8

For self diagnosis/ operation monitoring

9~10

SW2

SW3

SW4

Centralized control switch

Deletion of connection information.

Deletion of error history .

4 5 6

Disregard ambient air sensor errors, liquid overflow errors.

Forced defrosting

Defrost prohibited timer

SW3-2 Function valid/ invalid

Indoor Unit Test operation

Defrosting start temperature of TH7.

Defrosting end tempera-

ture of TH5. 5 6

Pomp down operation

Target Tc (High pressure)

at Heating 8 9

SW4-2 function valid/

Invalid 2

Configuration compensa-

tion value 3

Models

Function according to switch operation Switch set timing

When off When on When off When on

Set on 51~100 with the dial switch.

LED monitering display

–

Centralized control not connected. Storing of refrigeration system connection information.

– –

Errors valid.

Ordinary control

– –

SW3-2 Function invalid

Stop all indoor units.

–

– –

Changes as shown below by on → off change 0% → 3% → 6% → 9% → 12% → –6% → –3% → 0%

–

– –

43 min.

– –

–8°C

8°C

–

Invalid

49˚C

– –

Model P200

Invalid

–

Centralized control connected. Deletion of refrigeration system connection information. Deletion

– –

Disregard errors.

Start forced defrosting.

90 min.

– –

SW3-2 Function valid

All indoor units test operation ON.

–5°C

15°C

–

Valid

53˚C

– –

Model P250

Valid

–

Before power is turned on. During normal operation when power is on. Should be set on OFF. Before power is turned on.

Before power is turned on.

During normal operation when power is on.

During normal operation when power is on. (Except during defrosting)

During normal operation when power is on. When SW3-1 is ON after power is turned on. During normal operation when power is on. During normal operation when power is on. (Except during defrosting)

During compressor stop when power is on. During normal operation when power is on.

When switching on the power. During normal operation when power is on. when SW4-1 in ON.

– –

10 minutes or more after compressor starts.

– –

–

– –

–

Note:

• SWU1~2=00 when shipped from the factory. Other factory settings are indicated by shaded portions.

• If the address is set from 01 to 50, it automatically becomes 100.

–44–

(2) Indoor unit

DIP SW1, 3

Switch SW name

Room temp. sensor position

Clogged filter detect.

Filter duration

OA intake

Remote display select.

SW1

SW3

Humidifier control

Heating thermo. OFF airflow

Power failure automatic

return Power source start/stop

Model selection

3 4 5 6

Cooling capacity saving

Louver

for PKFY-P. VAM, effective/ineffective

Vane Vane swing function Vane horizontal angle

Vane angle set for cooling 7 8

Heating 4deg up 9

Operation by SW

OFF ON OFF ON

Indoor unit inlet

None 100h

Ineffective

Fan output display

At stationary heating

Very low speed

SW1-7 setting

Ineffective

Heat pump

None

None None

1st setting

Down blow B, C

–

Effective

– –

Built in remote controller

Provided

2500h

Effective

Thermo. ON signal display

Always at heat.

Low speed Set airflow

Effective

Cool.only

Provided

Provided Provided

2nd setting

Horizontal

–

Ineffective

– –

Switch set timing

At unit stopping

(at remote

controller OFF)

Remarks

Always ineffective for PKFY-P.VAM

Not provided for PKFY-P.VAM Provided for PLFY-P.VGM (ON) setting

Always down blow B,C for PKFY-P.VAM Horizontal (ON) setting for PLFY-P.VLMD

Ineffective (ON) setting for floor standing

Note 1: The shaded part indicates the setting at factory shipment. (For the SW not being shaded, refer to the

table below.)

Switch

SW1

SW3

Model

3 6 7 3 4 6 8

VBM-A

OFF OFF

OFF

PLFY-P VLMD-A

OFF

OFFONON

VKM-A

VML-A VMH-A

OFF ON

OFF

PEFY-P 20~80VMM-A

OFF

OFF ON

PDFY-P

100~140VMM-A

OFF OFF

OFF

VM-A

PFFY-P PCFY-P

VLRM-A, VLEM-A

OFF

ON OFF

PKFY-P

VGM-AONVAM-A VGM-A

OFF

ON OFF ON

Note 2: The DipSW setting is only effective during unit stopping (remote controller OFF) for SW1, 2, 3 and 4 commonly

and the power source is not required to reset.)

3: When both SW1-7 and SW1-8 are being set to ON, the fan stops at the heating thermostat of OFF.

Setting of DIP SW2

Model P20 P25 P32 P40 P50 P63 Capacity (model name) code

SW2 setting

45 681013

OFF

Model P71 P80 P100 P125 P140 P200 P250 Capacity (model name) code

SW2 setting

14 16 20 25 28 40 50

OFF

–45–

Setting of DIP SW4 Setting of DIP SW5

Model Circuit board used

PMFY-P-VBM-A PLFY-P-VLMD-A PDFY-P20 ~ 80VM-A PLFY-P40 ~ 63VKM-A PLFY-P80 ~ 125VKM-A PCFY-P-VGM-A PKFY-P-VGM-A PKFY-P-VAM-A PEFY-P20 ~ 80VMM-A PFFY-P-VLEM-A, P-VLRM-A PEFY-P20 ~ 32VML-A PEFY-P40 ~ 140VMH-A PEHY-P200·250VMH-A PDFY-P100·125VM-A PEFY-P100 ~ 140VMM-A

Phase control

Relay selection

1234

ON OFF ON OFF

––––

ON OFF ON OFF

OFF OFF OFF ON

ON OFF OFF ON OFF ON OFF ON OFF OFF ON ON

––––

ON ON OFF OFF OFF OFF OFF –

ON ON ON – OFF OFF OFF –

ON OFF OFF – OFF OFF ON –

ON ON ON OFF

SW4

220V 240V

Switch Function Operation by switch Switch set timing

(PLFY-P-VKM-A) (PCFY-P-VGM-A)

Ceiling height 3 3.5 m 2 2.8 m 1 2.3 m

Always after powering

SWA

Ceiling height setting

3 2 1

*The ceiling

height is changed by SWB setting.

3 2 1

SWA

SWB

SWC

External static pressure setting

For options

Setting of air outlet opening

Airflow control

(PDFY-P20 ~ 80VM-A, PEFY-P20 ~ 80VMM-A)

3 2 1

For other models, change the setting of static pressure by replacing the connector.

100Pa

50Pa 30Pa

(PLFY-P-VLMD-A)

*As this switch is used by interlocking with SWC,

2 1

(PLFY-P-VKM-A)

refer to the item of SWC for detail.

2-way 3-way 4-way

SWA

SWB

123

2-way 3.5 m 3.8 m 3.8 m 3-way 3.0 m 3.3 m 3.5 m 4-way 2.7 m 3.0 m 3.5 m

(PLFY-P-VKM-A, PCFY-P-VGM-A, PKFY-P-VGM-A, PDFY-P-VM-A)

Option

Standard

*Set to the option to install the high efficiency

filter

Always after powering

–46–

3 TEST RUN

[1] Before Test Run

(1) Check points before test run

1 Neither refrigerant leak nor loose power source/ transmission lines should be found.

2 Confirm that the resistance between the power source terminal block and the ground exceeds 2MΩ by measur-

ing it with a DC500V megger. Do not run if it is lower than 2MΩ. Note) Never apply the megger to the MAIN board. If applied, the MAIN board will be broken.

3 Confirm that the Ball valve at both gas and liquid sides is being fully opened.

Note) Certainly close the cap.

4 Be sure that the crankcase heater has been powered by turning the main power source on at least 12 hours

before starting the test run. The shorter powering time causes compressor trouble.

(2) Caution at inverter check

Because the inverter power portion in outdoor unit electrical part box have a lot of high voltage portion, be sure to follow the instructions shown below.

During energizing power source, never touch inverter power portion because high voltage (approx. 580V) is

applied to inverter power portion.

When checking,

Shut off main power source, and check it with tester, etc.

Allow 10 minutes after shutting off main power source.

Open the MAIN board mounting panel, and check whether voltage of both ends of electrolytic capacitor is

20V or less.

–47–

(3) Check points for test run when mounting options

Built-in optional parts Mounting of drain

water lifting-up mechanism

Mounting of permeable film humidifier

(4) Attention for mounting drain water lifting-up mechanism

Work

Disassembling and assembling of drain water lifting-up mechanism

Check humidifier operations and water supply status in heating (test run) mode.

Content of test run

Release connector of pump circuit, check error detection by pouring water into drain pan water inlet.

After that, connect connector of circuit.

Check pump operations and drainage status in cooling (test run) mode.

Content of test run

Lead wire from control box not damaged.

Rubber cap properly inserted to drain water outlet of drain pan?

Check point

Local remote controller displays code No. “2503”, and the mechanism stops.

No overflow from drain pan. Drain water comes out by operations of

drain pump. Sound of pump operations is heard, and

drain water comes out. No water leak from connecting portions

of each water piping. Water is supplied to water supply tank,

and float switch is operating.

Check point Result

Insulation pipe

Result

Mounting of float switch

Electric wiring

Insulation pipe of gas and liquid

pipes dealt with as shown in the right figure?

Drain pan and piping cover mounted

without gap? Drain pan hooked on cut projection

of the mechanism?

Float switch installed without contacting with drain pan?

No mistakes in wiring? Connectors connected surely and

tightly? No tension on lead wire when sliding

control box?

No gap

Float switch moves smoothly. Float switch is mounted on

mounting board straightly without deformation.

Float switch does not contact with

copper pipe. Wiring procedure is exactly followed. Connector portion is tightly hooked.

–48–

(5) Check points for system structure

ex. PURY-200YMF-C

Check points from installation work to test run.

Classification

Installation and piping

Power source wiring

Portion

Check item

Instruction for selecting combination of outdoor unit, and indoor unit followed? (Maximum number of indoor units which can be connected, connecting model name, and total capacity.)

Follow limitation of refrigerant piping length? For example, 70m or less (total length : 220m) at the farthest.

Connecting piping size of branch piping correct? Refrigerant piping diameter correct? Refrigerant leak generated at connection? Insulation work for piping properly done? Specified amount of refrigerant replenished?

Pitch and insulation work for drain piping properly done? Specified switch capacity and wiring diameter of main

power source used?

Proper grounding work done on outdoor unit? The phases of the L line (L1, L2, L3) correct?

Trouble

Not operate.

Not cool (at cooling). Not heat (at heating).

Not cool, not heat, error stop. Condensation drip in piping. Not cool, not heat, error stop.

Water leak, condensation drip in drain piping.

Error stop, not operate.

Electric shock. Error stop, not operate.

L line and N line connected correct?

Some electric parts should be damaged.

–49–

CENTRALLY CONTROLLED

D A I L Y

AUTO OFF

CHECK

STAND BY DEFROST

TEMP

2 31

PAR-F27MEA

TIMER SET

1Hr.

˚C

ON OFF

CLOCK

REMAINDER

˚C

ERROR CODE

ON OFF

CLOCK

NOT AVAILABLE

CHECK MODE

LIMIT TEMP.

ON/OFF

FILTER

TEST RUN

CHECK TEST

FILTER

PAR-F27MEA

STAND BY DEFROST

CENTRALLY CONTROLLED

D A I L Y

AUTO OFF

CHECK

TEMP

TIMER SET

1Hr.

˚C

ON OFF

CLOCK

REMAINDER

˚C

ERROR CODE

ON OFF

CLOCK

NOT AVAILABLE

ON/OFF

FILTER CHECK MODE TEST RUN LIMIT TEMP.

CHECK TEST

FILTER

Classification Transmission

line

System set

Portion Check item

Limitation of transmission line length followed? For example, 200m or less (total length : 500m) at the farthest.

2 1.25mm2 or more transmission line used?

(Remote controller 10m or less 0.75mm

)

3 2-core cable used for transmission line?

Transmission line apart from power source line by 5cm or more?

5 One refrigerant system per transmission line?

The short circuit connector is changed form CN41 to

CN40 on the MAIN board when the system is centralized control? (Just one outdoor unit. Not all outdoor units.)

7 • No connection trouble in transmission line? 8 Connection of wrong remote controller line terminals?

• MA Remote controller : TB15

• M-NET Remote controller : TB5 Address setting properly done? (M-NET Remote

controller, indoor unit and outdoor unit.) Setting of address No. done when shutting off power

source? Address numbers not duplicated?

Tur ned on SW3-8 on indoor unit circuit board when

mounting room thermistor sensor?

Trouble

Erroneous operation, error stop.

Error stop in case multiple-core cable is used.

Erroneous operation, error stop. Not operate. Not operate.

Error stop or not operate. Never finish the initial mode.

Error stop or not operate.

Can not be properly set with power source turned on.

Not operate. Set temperature not obtained at

heating operations (Thermostat stop is difficult)

Before starting

Refrigerant piping ball valve (Liquid pressure pipe, gas

pressure pipe) opened?

Tur n on power source 12 hours before starting operations?

–50–

Error stop.

Error stop, compressor trouble.

[2] Test Run Method

Operation procedure

Turn on universal power supply at least 12 hours before getting started → Displaying “HO” on display panel for

about two minutes

2 Press

3 Press selection button → Make sure that air is blowing out

5 Press

6 Press

7 Make sure that indoor unit fans operate normally 8 Make sure that interlocking devices such as ventilator operate normally if any

9 Press

Note 1: If check code is displayed on remote controller or remote controller does not operate normally.

TEST RUN

Press warm or cold air is blowing out

or button to change wind → Make sure that horizontal or downward blow is adjustable.

ON/OFF

2: Test run automatically stops operating after two hours by activation of timer set to two hours. 3: During test run, test run remaining time is displayed on time display section. 4: During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temperature

display section.

5: When pressing

controller. However, it is not a malfunction.

6: When pressing

remote controller. However, it is not a malfunction.

button twice → Displaying “TEST RUN’’ on display panel

select button to change from cooling to heating operation, and vice versa → Make sure that

adjust button → Make sure that air blow is changed

button to cancel test run → Stop operation

adjust button, depending on the model, “NOT AVAILABLE” may be displayed on remote

or button, depending on the model, “NOT AVAILABLE” may be displayed on

–51–

GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER

(1) Switch function

• The switch operation to register with the remote controller is shown below:

1Hr

NOT AVAILABLE

˚C

ON/OFF

C Switch to assign

indoor unit address

F Delete switch G Registered mode

STAND BY DEFROST

CENTRALLY CONTROLLED

D A I L Y

AUTO OFF

CHECK

TEMP

˚C

ON OFF

CLOCK

REMAINDER

ERROR CODE

ON OFF

CLOCK

selector switch

E Confirmation switch

PAR-F27MEA

TIMER SET

H Switch to assign inter-

locked unit address

Name Name of actual switch Description

Registration/ordinary mode selection switch

Symbol

of switch

A + B

FILTER

This switch selects the ordinary mode or registered mode (ordinary mode represents that to operate indoor units). * To select the registered mode, press the

switch continuously for over 2 seconds under stopping state. [Note] The registered mode can not be obtained for a while after powering. Pressing the

FILTER

CONTROLLED”.

Switch to assign indoor unit address

of TEMP

This switch assigns the unit address for “INDOOR UNIT ADDRESS NO.”

FILTER

CHECK MODE

TEST RUN

LIMIT TEMP.

FILTER

CHECK TEST

Registration/ ordinary mode selector switch

D Registration switch

Registration/ ordinary mode selector switch

FILTER

switch displays “CENTRALLY

Registration switch

Confirmation switch

Delete switch

Registered mode selector switch

Switch to assign interlocked unit address

TEST RUN

This switch is used for group/interlocked registration.

This switch is used to retrieve/identify the content of group and interlocked (connection information) registered.

CLOCK → ON → OFF

This switch is used to retrieve/identify the content of group and interlocked (connection information) registered.

This switch selects the case to register indoor units as group (group setting mode) or that as interlocked (interlocked setting mode). *The unit address is shown at one spot for the group setting mode while at two spots for the interlocked setting mode.

of TIMER SET

This switch assigns the unit address of “OA UNIT ADDRESS NO.”

–52–

(2) Attribute display of unit

• At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters.

Display Type (Attribute) of unit/controller

Indoor unit connectable to remote controller Outdoor unit

Local remote controller System controller (MJ)

[Description of registration/deletion/retrieval]

• The items of operation to be performed by the remote controller are given below. Please see the relating paragraph for detail.

1 Group registration of indoor unit

• The group of the indoor units and operating remote controller is registered.

• It is usually used for the group operation of indoor units with different refrigerant system.

2 Retrieval/identification of group registration information of indoor units

• The address of the registered indoor units in group is retrieved (identified).

3 Retrieval/identification of registration information

• The connection information of any unit (indoor/outdoor units, remote controller or the like) is retrieved (identified).

4 Deletion of group registration information of indoor units

• The registration of the indoor units under group registration is released (deleted).

5 Deletion of the address not existing

• This operation is to be conducted when “6607” error (No A CK error) is displa y ed on the remote controller caused b y the miss setting at test run, or due to the old memory remained at the alteration/modification of the group composition.

Caution:

When MELANS (MJ-103MTRA for example) is being connected, do not conduct the group/pair registration using the remote controller. The group/pair registration should be conducted by MELANS. (For detail, refer to the instruction exclusively prepared for MELANS.)

–53–

(3) Group registration of indoor unit

1) Registration method

• Group registration of indoor unit ........................................................................ 1

The indoor unit to be controlled by a remote controller is registered on the remote controller.

[Registration procedure]

1 With the remote controller under stopping or at the display of “HO”, continuously press the

(A + B) at the same time for 2 seconds to change to the registration mode. (See the figure below.)

2 Assign the indoor unit address to “INDOOR UNIT ADDRESS NO.” by operating the

adjustment) (C). Then press the

TEST RUN

switch (D) to register . In the figure below, the “INDOOR UNIT ADDRESS NO .” is being set

to 001.

3 After completing the registration, press the

FILTER

+ switch (A + B) at the same time for 2 seconds to

change to the original ordinary mode (with the remote controller under stopping).

Ordinary mode

• Remote controller under stopping • “HO” under displaying

FILTER

+ switch

(Room temperature

˚C

INDOOR UNIT ADDRESS NO

Group setting mode

˚C

TEMP

PAR-F27MEA

TIMER SET

ERROR CODE OA UNIT ADDRESS NO

ON OFF

CLOCK

ON/OFF

CHECK TEST

FILTER

2 + 3

˚C

INDOOR UNIT

ERROR CODE

ADDRESS NO

OA UNIT ADDRESS NO

• Registration complete

▲

Indicates the type of unit (Indoor unit in this case)

˚C

ERROR CODE OA UNIT ADDRESS NO

• Registration error

▼

“88” flickers indicating registration error. (when the indoor unit registered is not existing)

˚C

ERROR CODE OA UNIT ADDRESS NO

2 Assign the

address (C)

System example

Remote controller

1 Change to the

registration mode (A + B)

Indoor units

3 Press the

registration switch (D)

Group

• Confirm the indoor unit address No.

• Confirm the connection of the transmission line.

–54–

2) Method of retrieval/confirmation

• Retrieval/confirmation of group registration information on indoor unit............... 2

The address of the indoor unit being registered on the remote controller is displayed.

[Operation procedure]

1 With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

+ B) at the same time for 2 seconds to change to the registration mode.

2 In order to confirm the indoor unit address already registered, press

switch (E). (See figure below.) When the group

of plural sets is registered, the addresses will be displayed in order at each pressing of switch (E).

3 After completing the registration, continuously press the

FILTER

+ switch (A + B) at the same time for 2

seconds to change to the original ordinary mode (with the remote controller under stopping).

• Registered

+ switch (A

PAR-F27MEA

TEMP

TIMER SET

CLOCK

ON OFF

ON/OFF

CHECK TEST

FILTER

▲

Indicates the type of unit (Indoor unit in this case)

• No registration.

˚C

ERROR CODE OA UNIT ADDRESS NO

▼

˚C

ERROR CODE OA UNIT ADDRESS NO

Note: Only one address will be displayed

1 Press the switch for confirmation (E)

• Retrieval/confirmation of registration information ................................................ 3

The registered information on a certain unit (indoor unit, outdoor unit, remote controller or the like) is displayed.

[Operation procedure]

1 With the remote controller under stopping or at the display of “HO”, continuously press the

+ B) at the same time for 2 seconds to change to the registration mode.

2 Operate

switch (G) for the interlocked setting mode. (See figure below.)

3 Assign the unit address of which registration information is desired to confirm with the (TIMER SET) switch

(H). Then press the

switch (E) to display it on the remote controller. (See figure below.)

Each pressing of switch (E) changes the display of registered content. (See figure below.)

4 After completing the retrieval/confirmation, continuously press the

FILTER

for 2 seconds to change to the original ordinary mode (with the remote controller under stopping).

when the registration is one even the switch is how often pressed

FILTER

+ switch (A

+ switch (A + B) at the same time

–55–

PAR-F27MEA

TEMP

TIMER SET

CLOCK

ON OFF

ON/OFF

CHECK TEST

FILTER

1 + 2

▲

• Registered

˚C

(Alternative

display)

˚C

(Alternative

display)

2 Press the switch for

confirmation (E)

1 Set the address

INDOOR UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

* Same display will appear when

• No registration

the unit of “007” is not existing.

▼

˚C

ERROR CODE

3) Method of deletion

• Deletion of group registration information of indoor unit ...................................... 4

[Operation procedure]

1 With the remote controller under stopping or at the display of “HO”, continuously press the

switch (A + B) at the same time for 2 seconds to change to the registration mode.

2 Press the switch (E) to display the indoor unit address registered. (As same as 2) 3 In order to delete the registered indoor unit being displayed on the remote controller, press the

two times continuously. At completion of the deletion, the attribute display section will be shown as “ – – “.

(See figure below.) Note: Completing the deletion of all indoor units registered on the remote controller returns to “HO” display.

4 After completing the registration, continuously press the

FILTER

+ switch (A + B) at the same time for 2

seconds to change to the original ordinary mode (with the remote controller under stopping).

OA UNIT ADDRESS NO

FILTER

CLOCK → ON → OFF

(F) switch

TEMP

ON OFF

CLOCK

PAR-F27MEA

TIMER SET

1 Press the switch for confirmation (F)

twice continuously.

ON/OFF

CHECK TEST

FILTER

In case group registration with other indoor unit is existing

In case no group registration with other indoor unit is existing

–56–

• Deletion completed

▲

˚C

INDOOR UNIT ADDRESS NO

“– –” indicates the deletion completed.

• Deletion completed

▼

INDOOR UNIT ADDRESS NO

ERROR CODE OA UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

4) Deletion of information on address not existing

• Deletion of information on address not existing................................................... 5

This operation is to be conducted when “6607” error (No ACK error) is displayed on the remote controller caused by the miss setting at test run, or due to the old memory remained at the alteration/modification of group composition, and the address not existing will be deleted. Note: The connection information (connection between indoor unit and outdoor unit) on the refrigerant system can

not be deleted. An example to delete the system controller of “250” from the indoor unit of “007” is shown below.

[Operation procedure]

1 With the remote controller under stopping or at the display of “HO”, continuously press the

FILTER

+ switch (A

+ B) at the same time for 2 seconds to change to the registration mode.

2 Operate

switch (G) for the interlocked setting mode ( ii ). (See the figure below.)

3 Assign the unit address existing to “OA UNIT ADDRESS No.” with the (TIMER SET) switch (H), and press

switch (E) to call the address to be deleted. (See the figure below .) As the error display on the remote controller is usually transmitted from the indoor unit, “OA UNIT ADDRESS No.” is used as the address of the indoor unit.

4 Press the 5 After completing the deletion, continuously press the

CLOCK → ON → OFF

switch (F) twice. (See the figure below.)

FILTER

+ switch (A + B) at the same time for 2 seconds

to return to the original ordinary mode (with the remote controller under stopping).

• Deletion completed

When both indoor

INDOOR UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

(Alternative

display)

unit and interlocked unit addresses are existing

▲

INDOOR UNIT ADDRESS NO

˚C

ERROR CODE OA UNIT ADDRESS NO

(Alternative

display)

INDOOR UNIT ADDRESS NO

PAR-F27MEA

2 Press the switch for

confirmation (E)

˚C

ERROR CODE OA UNIT ADDRESS NO

▲

1 + 2

TEMP

ON OFF

CLOCK

TIMER SET

3 Press the deletion switch (F) twice

1 Set the address (H)

ON/OFF

CHECK TEST

FILTER

Deletion of address not existing

˚C

INDOOR UNIT ADDRESS NO

• Deletion completed

˚C

INDOOR UNIT ADDRESS NO

(Alternative

˚C

▼

ERROR CODE OA UNIT ADDRESS NO

display)

ERROR CODE OA UNIT ADDRESS NO

–57–

5 CONTROL

[1] Control of Outdoor Unit

(1) Initial processing

• When turning on power source, initial processing of microcomputer is given top priority.

• During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing : Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.)

(2) Control at staring

• In case unit is started within 2 hours after turning on power source at low ambient temperature (+5˚C or less), the unit does not start operating for 30 minutes at the maximum.

(3) Bypass, capacity control

• Solenoid valve consists of bypass solenoid valve (SV1, SV2) bypassing between high pressure side and low pressure sider. The following operation will be provided.

1) Bypass solenoid valves SV1 and SV2 (both “open” when turned on)

• PU(H)Y-200·250YMF-C : Y

• PU(H)Y-P200·250YMF-C : Y-P

• PURY-200·250YMF-C : R2

• PURY-P200·250YMF-C : R2-P

Item

When starting compressor After thermost “ON is returned

and after 3 minutes restart When compressor stops in

cooling or heating mode After operation stops During defrosting operations During oil recovery opera-

tions

During 20Hz operations, at fall in low pressure or low pressure saturation temperature. (3minutes or more after starting)

When high pressure rises (Pd)

When high pressure rises (Pd) during 20Hz operations (3 minutes after starting)

When discharge temperature rises (3 minutes after starting)

SV1

ON (Open) OFF (Close)

Turned on for 4 minutes Turned on for 4 minutes

Always turned on

Turned on for 3 minutes Always turned on Always turned on. Always turned on.

–

When Pd reaches

27.5kg/cm2G (2.70MPa) or more

When Pd is 24kg/cm2G (2.35MPa) or less 30 seconds

–

ON (Open) OFF (Close)

Turned on for 4 minutes Turned on for 4 minutes

When Ps is 1.5kg/ cm2G (0.15MPa) or less

When low TH2 is –30˚C or less

When Pd reaches

26.5kg/cm2G (2.60MPa) or more

When Pd reaches

25.5kg/cm2G (2.50MPa) or more

Turned on when high pressure (Pd) exceeds pressure limit

When temp. exceeds 130˚C and Pb reaches 15kg/cm2G (1.47MPa) or more

SV2

–

– Always turned on. Always turned on.

–

When Ps is 2.5kg/ cm2G (0.25MPa) or more

When TH2 is –15˚C or more

When Pd is 23.5kg/ cm2G (2.30MPa) or less after 30 seconds

When Pd is 23kg/ cm2G (2.25MPa) or less after 30 seconds

When high pressure (Pd) is 20kg/cm2G (1.96MPa) or less

When discharge temp. is 115˚C or less

Object

Y Y-P R2 R2-P

❍❍❍❍ ❍❍❍❍

❍❍❍❍

❍❍❍❍ ❍❍❍❍

❍❍

❍❍❍

❍

❍❍

❍❍❍❍

❍❍

Compressor

Bypass solenoid valve (SV1)

Start

(4-minute)

Thermo. OFF

Thermo. ON

(2-minute) (4-minute) (3-minute)

Defrosting time (*1)

Stop

–58–

(4) Frequency control

• Depending on capacity required, capacity control change and frequency change are performed to keep constant evaporation temperature in cooling operations, and high pressure saturation temperature in heating operation.

• Frequency change is perfprmed at the rate of 2Hz/second across 20 ~ 105Hz range.

1) Frequency control starting

• 60Hz is the upper limit for 3 minutes after starting.

• 75Hz is the upper limit within 30 minutes at the first starting compressor after turning on power source.

2) Pressure limit The upper limit of high pressure (Pd) is set for each frequency. When the limit is exceeded, frequency is reduced every 10 seconds. (Frequency decrease rate (Hz) : 22% of the present value)

<(P)200YMF-C> <(P)250YMF-C>

3) Discharge temperature limit Discharge temperature (Td) of compressor is detected during operation. If the upper limit is exceeded, the frequency is reduced. (Change rate : 5% of the present value)

• 30 seconds after starting compressor, control is performed every minute.

• Operation temperature is 130˚C.

4) Periodical frequency control Frequency controll is periodically performed except for the frequency controls at operation start, status change, and protection.

1 Cycle of periodical frequency control

Periodical frequency control is performed every minute after the time specified below has passed.

• 20 sec after starting compressor or finishing defrostoing operations

• 20 sec after frequency control by discharge temperature or pressure limit

2 Amount of frequency change

The amount of frequency change is controlled corresponding to evaporation temperature and high pressure saturation temperature.

3-1 Back up of frequency control by bypass valve (PU(H)Y-200·250YMF-C)

During 20Hz operations, frequency is backed up by turning on (opening) bypass valve (SV2).

• Cooling During 20Hz operations 3 minutes after starting compressor, bypass valve is turned on when TH2 is -30˚C or less, and turned off when TH2 is –15˚C or more.

• Heating During 20Hz operations 3 minutes after starting compressor, SV2 turned on when high pressure (Pd) exceeds pressure limit and turned off when Pd falls to 20kg/cm

G (1.96MPa) or less.

ON OFF

▼

–30˚C –15˚C

–59–

ON OFF

▼

20kg/cm2G 22kg/cm2G (1.96MPa) (2.16MPa)

▼

3-2 Back up of frequency control by bypass valve (PUHY-P200·250YMF-B, PURY-(P)200·250YMF-C)

During 20Hz operations, frequency is backed up by turning on (opening) bypass valve (SV2).

• Cooling During 20Hz operations 3 minutes after starting compressor, bypass valve is turned on when, Ps is 1.5kg/cm

G (0.15MPa) or less and turned off when Ps is 2.5kg/cm2G (0.25MPa) or more.

• Heating During 20Hz operations 3 minutes after starting compressor, SV2 turned on when high pressure (Pd) exceeds pressure limit and turned off when Pd falls to 20kg/cm

▼

OFF

1.5kg/cm2G 2.5kg/cm2G (0.15MPa) (0.25MPa)

▼

ON OFF

20kg/cm2G 27kg/cm2G (1.96MPa) (2.65MPa)

G (1.96MPa) or less.

▼

(5) Oil return control (Electronic expansion valve <SLEV>)

• Oil return LEV (SLEV) opening is dependent on compressor frequency and ambient temperature.

• SLEV is closed (0) when compressor stops, and SLEV is set (64) for 10 minutes after starting compressor.

(6) Subcool coil control (electronic expansion valve <LEV1>) : PU(H)Y-200·250YMF-B, PUHY-P200·250YMF-C

• The amount of super heat detected from the bypass outlet temperature of subcool coil (TH8) is controlled to be within a certain range for each 60 sec.

• The opening angle is corrected and controlled depending on the outlet/inlet temperature of subcool coil (TH5, TH7) and the discharge temperature.

• However, the valve will be closed (0) at heating and compressor stopping.

• It will fully open at defrosting.

(7) Defrost operation control

1 PU(H)Y-(P)200·250YMF-C

1) Starting of defrost operations

•

After integrated 39 min : P-YMF-C, 43 min : YMF-C of compressor operations, defrosting operations start when – 4˚C

or less : P-YMF-C, –2˚C or less : YMF-C of piping temperature (TH5) is detected for 3 consecutive minutes.

• Forcible defrosting operations start by turning on forcible defrost switch (SW2-7) if 3 minutes have already elapsed after compressor start or completion of defrosting operations.

2) Completion of defrosting operations Defrosting operations stop when 10 min : P-YMF-C, 15 min : YMF-C have passed since start of defrosting operation, or piping temperature (TH5) reaches 8˚C or more. (Defrosting operations do not stop for 2 minutes after starting, except when piping temperature exceeds 20˚C.)

3) Defrosting prohibition Defrosting operations do not start during oil recovery, and for 10 minutes after starting compressor.

4) Trouble during defrosting operations When trouble is detected during defrosting operations, the defrosting operations stop, and defrosting prohibition time decided by integrated operation time of compressor is set to be 20 minutes.

5) Change in number of operating indoor units during defrosting operations

• In case number of operating indoor units changes during defrosting operations, the defrosting operations continue,

and control of unit number change is performed after the defrosting operations are finished.

• Even in case all indoor units stop or thermostat is turned off during defrosting operations, the defrosting operations

do not stop until expected defrosting activities are completed.

–60–

2 PURY-(P)200·250YMF-C

1) Starting of defrost operations

• After integrated 43 minutes of compressor operations, defrosting operations start when –8˚C : P-YMF-C, –6˚C : YMF-C or less of piping temperature (TH7) is detected for 3 consecutive minutes.

• Forcible defrosting operations start by turning on forcible defrost switch (SW2-7) if 3 minutes have already elapsed after compressor start or completion of defrosting operations.

2) Completion of defrosting operations Defrosting operations stop when 10 minutes have passed since start of defrosting operation, or piping temperature (TH5) reaches 8˚C or more. (Defrosting operations do not stop for 4 minutes after starting, except when piping temperature exceeds (TH5 and TH7) 20˚C and Pd >10kg/cm

3) Defrosting prohibition Defrosting operations do not start during oil recovery, and for 10 minutes after starting compressor.

5) Change in number of operating indoor units during defrosting operations

• In case number of operating indoor units changes during defrosting operations, the defrosting operations continue,

and control of unit number change is performed after the defrosting operations are finished.

• Even in case all indoor units stop or thermostat is turned off during defrosting operations, the defrosting operations

do not stop until expected defrosting activities are completed.

G (0.98MPa).)

(8) Control of liquid level detecting heater

Detect refrigerant liquid level in accumulator, and heat refrigerant with liquid level heater for judging refrigerant amount. 6 steps of duty control is applied to liquid level heater depending on frequency and outdoor air temperature, 1minute after starting compressor.

(9) Judgement of refrigerant amount

Inlet

LD1 ON

LD1 OFF

LD2

Float

LD1

LD2 OFF AL=1 AL=0

Outlet

Oil return

AL=2

AL=1

AL=0

LD2 ON

–

AL=2

LD : Liquid level Detected Switch

–61–

(10) Refrigerant recovery control (PU(H)Y-(P)200·250YMF-C)

Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off.

1) Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied.

• 15 minutes has passed after finishing refrigerant recovery.

• The discharge temparature is high.

2) Refrigerant recovery operation

• Refrigerant is recovered by opening LEV of the objective indoor units (indoor units under stop. fan, and cooling

modes, and that with heating thermostat being turned off) for 30 seconds.

LEV opening at refrigerant recovery (Indoor unit LEV opening 500 pulse)

LEV opening before change

Starts

30 seconds

Finish

• The regular capacity control of the outdoor unit and the regular LEV control of the indoor unit are not applied

during refrigerant recovery operation, but are fixed with the value before the recovery operation. These controls will be conducted one minute after finishing the recovery operation.

• Defrosting operation is prohibited during the recovery operation, and it will be conducted after finishing the recov-

ery operation.

(11) Control of outdoor unit fan and outdoor unit heat exchanger capacity

1 PU(H)Y-200·250YMF-C

1) Control system Depending on capacity required, control outdoor fan flow rate with phase control, for maintaining evaporation temperature (0˚C when Pd

15kg/cm2G (1.47MPa), lower than 0˚C when Pd < 15kg/cm2G (1.47MPa) in cooling

operations, and high pressure 18kg/cm2G (1.76MPa) in heating operations.

2) Control

• Outdoor unit fan stops when compressor stops.

• Fan is in full operation for 5 seconds after starting.

• Outdoor unit fan stops during defrosting operations.

2 PUHY-P200·250YMF-B, PURY-(P)200·250YMF-C

1) Control system Depending on capacity required, control outdoor fan flow rate with phase control, for maintaining evaporation temperature (0˚C) in cooling operations, and high pressure saturated temperature (49˚C) in heating operations.

2) Control

• Outdoor unit fan stops when compressor stops.

• Fan is in full operation for 5 seconds after starting.

• Outdoor unit fan stops during defrosting operations.

–62–

[2] Control of BC Controller

(1) Control of SVA, SVB and SVC

SVA, SVB and SVC are turned on and off depending on connection mode.

Mode

Connection

SVA ON OFF OFF OFF SVB OFF ON OFF OFF

SVC ON OFF OFF OFF

(2) Control of SVM

SVM is turned on and off corresponding to operation mode.

Operation mode Cooling-only Cooling-main Heating-only Heating-main Stop

SVM ON OFF OFF OFF OFF

(3) Control of LEV

LEV opening (sj) is controlled corresponding to operation mode as follows: (Number of pulse)

Operation mode Cooling-only Heating-only Cooling-main Heating-main Stop

LEV1

LEV3

Cooling Heating Stop Defrost

* SVM is not built in depending on models.

2000

Superheat

control *1

Differential

Pressure control

• Liquid level control *3

• Differential pressure control

Differential

Pressure control

2000

Superheat

control

Differential

pressure control

* Please confirm that the above parts of BC controllers are being color-corded and shown with the name plate inside

the BC controller unit.

–

Control every minute so that superheat amount detected by bypass inlet and oulet temperatures (TH12, TH15) stay in the specified range.

Control every minute so that detected differential pressure (PS1, PS3) stay in the specified range.

60 or more pulses are sometimes detected because of rise in liquid side pressure (PS1).

–63–

[3] Operation Flow Chart

(1) Outdoor unit

Start

“HO” blinks on the remote

controller

Oil return LEV, SC coil LEV

(PUHY) fully closed

1. 52C OFF

2. Inverter output 0Hz

3. Outdoor fan Stop

4. All solenoid valve OFF

Fan

dress No. to remote

Breaker

turned on

YES

Set indoor ad-

controller

YES

Operation command

YES

Operation

mode

Error mode

Normal operations Trouble observed Stop

Note : 1

Cooling-only, Heating-only, Cooling/heating mixed

Note : 2

YES

Error stop

52C ON

Note : 3

Operation

mode

Cooling (Cooling-

only) operations

Note : 1 For about 3 minutes after turning on power source, address and group information of outdoor unit, BC, controller indoor unit,

Note : 2 T w o trouble modes included indoor unit side troub le, (BC controller trouble) and outdoor unit side troub le. In the case of indoor

Note : 3 On PUHY system, operation mode conforms to mode command by indoor unit. However, when outdoor unit is being under

Note : 4 In case BC controller issues cooling/heating mixed operation mode, outdoor unit decides operation mode of cooling-main

and remote controller are retrieved by remote controller, during which “HO” blinks on and off on remote controller. In case indoor unit is not grouped to remote controller, “HO” display on remote controller continues blinking even after 3 minutes after turning on power source.

unit side trouble, error stop is observed in outdoor unit only when all the indoor units are in trouble. However, if one or more indoor units are operating normally, outdoor unit shows only LED display without undergoing stop.

cooling operation, the operation of indoor unit will be prohibited even b y setting a part of indoor units under operation, or indoor unit under stopping or fan mode to heating mode. Re versely when outdoor unit is being heating oper ation, the same condition will be commenced. On PURY system, operation mode conforms to mode command by BC controller.

operation or heating-main operation.

Heating (Heating-

only) operations

Operation mode command to (BC controller) outdoor unit

Cooling/heating mixed (only for PURY)

Note : 4

Operation

mode

Cooling-main

operations

Heating-main

operations

Error code blinks on the outdoor controller board

Error command to

BC controller

Error code blinks on the

remote controller

–64–

(2) BC controller (for PURY)

Start

Breaker

turned on

YES

Operation

1.Operation mode judgement

2.Transmission to outdoor unit

Receiving operation mode

command from outdoor unit

command

YES

(cooling-only, heating-only, cooling/heating mixed)

Note : 1

Error mode

YES

Normal operations Trouble observed Stop

Fan

Solenoid valve OFF,

LEV fully closed.

Cooling-only

operations

Note : 1 Two error modes include indoor unit side trouble, BC controller trouble, and outdoor unit side trouble. In the case of indoor

unit side trouble, error stop is observed in the concerned indoor unit only, and in the cases of BC controller and outdoor unit side troubles, error stop is observed in all the indoor units, BC controller, and outdoor unit.

Operation mode

Heating-only

operations

Cooling/heating mixed

Operation mode

Cooling-main

operations

Heating-main

operations

Error stop

Error code blinks on the outdoor controller board

Error command to

BC controller

Error code blinks on the

remote controller

–65–

(3) Indoor unit

Start

Breaker

turned on

YES

Normal operations Trouble observed Stop

YES

3-minute drain

pupm ON

Operation SW

turned on

1. Protection function self-holding cancelled.

2. Indoor unit LEV fully closed.

Remove controller display extinguished

FAN stop

Drain pump

YES

Note :1

Note :2

Error mode

YES

Error stop

Error code blinks on the remote controller

Error command to outdoor unit

Indoor unit LEV fully closed

Note :1

Error code blinks on the outdoor controller board

Cooling mode

Cooling

display

Prohibition Prohibition

Heating

mode

Heating

display

YES

Cooling operations

Heating operations

Operation mode

YES

Dry operation

Prohibition “Remote controller blinking”

only for PURY

Dry mode

Dry display

Cooling/heating automatic mode

Cooling/heating automatic display

Note :3Note :3 Note :3

YES

Cooling/heating automatic operations

Prohibition Prohibition

Fan mode

Fan display

YES

Fan operations

Note : 1 Indoor unit LEV fully closed : Opening 60 Note : 2 Two error modes include indoor unit trouble, (BC controller trouble) and outdoor unit side trouble. In the case of indoor unit

trouble, error stop is observed in the concerned indoor unit only, and in the cases of (BC controller and) outdoor unit side troubles, error stop is observed in all the indoor units connected.

Note : 3 “Prohibition” status is observed (when several indoor units are connected to one connection, of BC controller and) when

connection mode is different from indoor unit operation mode. (Operation mode display on the remote controller blinks on and off, fan stops, and indoor unit LEV is fully closed.)

–66–

(4) Cooling operation

Cooling operation

YES

4-way valve OFF

Indoor unit fan

operations

Test run start

Thermostat ON

YES

3-minute

restart

prevention

Normal operations Test run Stop

YES

1.Inverter output 0Hz

2.Indoor unit LEV, oil return LEV, Subcool coil bypass LEV fully closed

3.Solenoid valve OFF

4.Outdoor unit fan stop

5.BC controller solenoid valve OFF (PURY)

6.BC controller LEV fully closed (PURY)

1.Inverter frequency control

2.Indoor unit LEV, oil return LEV control

3.Solenoid valve control

4.Outdoor unit fan control

5.BC controller solenoid valve control (PURY)

6.BC controller LEV control (PURY)

–67–

(5) Heating operation

Heating operation

4-way valve ON

Thermostat ON

YES

Note : 1 Note : 2

Defrosting

operation

Test run start

YES

3-minute

restart

prevention

Normal operations Defrosting operations Stop Test run

YES

4-way valve OFF

YES

1.Indoor unit fan stop

2.Inverter defrost frequency control

3.Indoor unit LEV fully opened, oil return LEV fully closed

4.Solenoid valve control

5.Outdoor unit fan stop

6.BC controller solenoid valve control (PURY)

7.BC controller LEV control (PURY)

1.Indoor unit fan very low speed operations

2.Inverter output 0Hz

3.Indoor unit LEV, oil return LEV fully closed

4.Solenoid valve OFF

5.Outdoor unit fan stop

6.BC controller solenoid valve OFF (PURY)

7.BC controller LEV fully closed (PURY)

Note : 1 When outdoor unit starts defrosting, it transmits defrost operations command to (BC controller and) indoor unit, and the

Note : 2 1 PUHY-(P)200·250YMF-C

indoor unit starts defrosting operations. Similarly when defrosting operation stops, indoor unit returns to heating operation after receiving defrost end command of outdoor unit.

Defrosting start condition : After integrated 39 minutes : P-YMF-C, 43 minutes : YMF-C of compressor operations, Defrosting end condition : After 10 minutes : P-YMF-C, 15 minutes : YMF-C of defrosting operation or the outdoor unit

2 PURY-(P)200·250YMF-C

Defrosting start condition : After integrated 43 minutes of compressor operations, and –8˚C:P-YMF-C, –6˚C:YMF-C or Defrosting end condition : After 15 minutes of defrosting operation or the outdoor unit coil temperature (TH5 and TH7)

1.Indoor and outdoor unit fan control

2.Inverter frequency control

3.Indoor unit LEV, oil return LEV control

4.Solenoid valve control

5.BC controller solenoid valve control (PURY)

6.BC controller LEV control (PURY)

and – 4˚C : P-YMF-C, –2˚C : YMF-C or less outdoor unit coil temperature. coil temperature having risen to 8˚C or more.

less outdoor unit coil temperature. (TH7) having risen to 8˚C or more.

–68–

(6) Dry operation

Dry operations

4-way valve OFF

Normal operations Thermostat ON Stop

1.Indoor unit fan stop

2.Inverter output 0Hz

3.Indoor unit LEV, oil return LEV closed

4.Solenoid valve OFF

5.Outdoor unit fan stop

6.BC controller solenoid valve OFF (PURY)

7.BC controller LEV fully closed (PURY)

Test run start

Inlet temp. 18˚C

YES

1.Outdoor unit (Compressor) intermittent operations

2.Indoor unit fan intermittent operations

YES

(Synchronized with compressor : low speed, OFF operations)

YES

Note : 1

Note : 2

Thermostat ON

Note : 1 When indoor unit inlet temperature exceeds 18˚C, outdoor unit (compressor) and indoor unit fan start intermittent operations

Note : 2 Thermostat is always kept on in test run, and indoor and outdoor unit intermittent operation (ON) time is a little longer than

synchronously. Operations of outdoor unit, BC controller (PURY), indoor unit LEV and solenoid valve accompanying compressor are the same as those in cooling operations.

normal operations.

–69–

[4] List of Major Component Functions

Name Application Specification Check method Object

Compressor

High pressure sensor

Low pressure sensor

Pressure switch

Symbol

(function)

63HS

63LS

63H

Adjust refrigerant circulation by controlling operating frequency and capacity control valve with operating pressure.

1) High press. detection.

2) Frequency control and high pressure protection

1) Detects low pressure

2) Calculates the refrigerant circulation configuration.

3) Protects the low pressure

1) High pressure detection

2) High pressure protection

Low pressure shell scroll type with capacity control mechanism Winding resistance: Each phase 0.388Ω (20˚C)

Pressure

Connector

63HS

63LS

0~30 kg/cm (0~2.94MPa) Vout 0.5~3.5 V

Gnd (black) Vout (white) Vc (DC5V) (red)

Pressure 0~10 kg/cm (0~0.98MPa) Vout 0.5~3.5 V

Gnd (black) Vout (white) Vc (DC5V) (red)

Setting 30kg/cm2G (2.94MPa) OFF

Continuity check

• PU(H)Y(P)200·250YMF-C

• PURY(P)200·250YMF-C

• PU(H)YP200·250YMF-C

• PURY(P)200·250YMF-C

• PU(H)Y(P)200·250YMF-C

• PURY-

Thermistor

TH1 (discharge)

1) Discharge temperature detection

2) High pressure protection 20˚C :250kΩ 70˚C : 34kΩ

30˚C : 160kΩ 80˚C : 24kΩ 40˚C : 104kΩ 90˚C : 17.5kΩ

R120=7.465kΩ B25/120=4057

Rt = 7.465exp {4057( - )}

273+t

273+120

Resistance value check

(P)200·250YMF-C

50˚C : 70kΩ 100˚C : 13.0kΩ 60˚C : 48kΩ 110˚C : 9.8kΩ

Outdoor unit

TH2 (low pressure saturation temperature)

TH5 (piping temperature)

TH6 (outdoor air temperature)

TH7 (subcool coil outlet temperature)

TH8 (subcool coil bypass outlet temperature)

1) Detects the saturated vapor temperature.

2) Calculates the refrigerant circulation configuration.

3) Controls the compressor frequency.

4) Controls the outdoor unit’s fan air volume.

1) Frequency control

2) Defrost control and liquid level detection at heating

1) Outdoor air temperature detection

2) Fan control, liquid level heater, and opening setting for oil return

Subcool coil bypass LEV (LEV1) control

R0=33kΩ B0/100=3965 Rt = 33exp{3965( - )}

273+t

273+0

-20˚C : 92kΩ

-10˚C : 55kΩ 0˚C : 33kΩ 10˚C : 20kΩ 20˚C : 13kΩ 30˚C : 8.2kΩ

R0=15kΩ B0/100=3460 Rt = 15exp{3460( - )}

273+t

273+0

0˚C : 15kΩ 10˚C : 9.7kΩ 20˚C : 6.4kΩ 25˚C : 5.3kΩ 30˚C : 4.3kΩ 40˚C : 3.1kΩ

Resistance value check

• PU(H)Y(P)200·250YMF-C

• PURYP200·250YMF-C

• PU(H)Y(P)200·250YMF-C

• PURY(P)200·250YMF-C

• PU(H)Y(P)200·250YMF-C

TH9

1) Detects the CS circuit fluid temperature.

2) Calculates the refrigerant circulation configuration.

• PU(H)YP200·250YMF-C

• PURYP200·250YMF-C

–70–

Name Application Specification Check method Object

Thermistor

Symbol

(function)

TH10 (P-YMF-C only)

1) Detects the compressor shell temperature.

2) Provides compressor shell overheating protection.

R120=7.465kΩ B25/120=4057 Rt =

7.465exp {4057( - )}

273+t

273+120

• PU(H)YP200·250 YMF-C

• PURYP200·250 YMF-C

20˚C : 250kΩ 70˚C : 34kΩ 30˚C : 160kΩ 80˚C : 24kΩ 40˚C : 104kΩ 90˚C : 17.5kΩ 50˚C : 70kΩ 100˚C : 13.0kΩ 60˚C : 48kΩ 110˚C : 9.8kΩ

Solenoid valve

Outdoor unit

Linear expansion valve

Liquid level detection switch

Linear expansion valve

THHS

SV1 (discharge suction bypass)

SV2 (discharge suction

bypass) SV3 ~ 5

SV3 ~ 6

SLEV

LEV1 (SC coil)

LD1 LD2

LEV

1) Detects the inverter cooling fin temperature.

2) Provides inverter overheating protection.

3) Controls the control box cooling fan.

1) High/low press. bypass at starting/ stopping and capacity control at low load

2) Discharge press. rise suppression

Capacity control and high press. rise suppression (backup for frequency control)

Control of heat exchanger capacity.

Adjustment of liquid refrigerant (oil) return foam accumulator

Adjustment bypass flow rate from outdoor unit liquid line at cooling.

Detection of refrigerant liquid level in accumulator

1) Adjust superheat of outdoor unit heat exchanger outlet at cooling.

2) Adjust subcool of indoor unit heat exchanger at heating.

R50=17kΩ B25/50=4170 Rt = 17exp{4170( - )}

273+t

273+50

-20˚C : 605.0kΩ 50˚C : 17.0kΩ

-10˚C : 323.3kΩ 60˚C : 11.5kΩ 0˚C : 180.9kΩ 70˚C : 8.0kΩ 10˚C : 105.4kΩ 80˚C : 5.7kΩ 20˚C : 63.8kΩ 90˚C : 4.1kΩ 30˚C : 39.9kΩ 100˚C : 3.0kΩ 40˚C : 25.7kΩ

AC 220~240V Open at energizing and close at deenergizing

DC12V stepping motor drive Valve opening 0~480 pulse

LD2 LD1

5.1kΩ

243

5.1kΩ

CN05

DC12V Opening of stepping motor driving valve 60~2,000 pulses

• Continuity check by tester

• Temperature of inlet and outlet.

Resistance value check

Continuity check with tester for white-red-orange yellow-brown-blue

• PU(H)Y(P)200·250 YMF-C

• PURY(P)200·250 YMF-C

•

PU(H)YP200·250YMF-C

•

PURY(P)200·250YMF-C

• PU(H)Y(P)200·250YMF-C

• PURY(P)200·250YMF-C

•

PU(H)Y(P)200·250YMF-C

• PU(H)Y(P)200·250YMF-C

• PURY(P)200·250YMF-C

Thermistor

Indoor unit

TH21 (inlet air temperature)

TH22 (piping temperature)

TH23 (gas side piping temperature)

Indoor unit control (thermostat)

1) Indoor unit control (freeze prevention, hot adjust, etc.)

2) LEV control in heating operation (Subcool detection)

LEV control in cooling operation (Superheat detector)

–71–

R0 = 15kΩ B0/100 = 3460

Rt = 15exp {3460 ( - )}

273+t

273+0

0°C : 15kΩ 10°C : 9.7kΩ 20°C : 6.4kΩ 25°C : 5.3kΩ 30°C : 4.3kΩ 40°C : 3.1kΩ

Resistance value check

Name Application Specification Check method Object

Pressure sensor

Symbol

(function)

PS1

PS3

1) Liquid pressure (high-pressure) detection

2) LEV control

1) Intermediate pressure detection

2) LEV control

Connector

PS1 PS3

Pressure 0~30 kg/cm (0~2.94MPa) Vout 0.5~3.5 V

Gnd (black) Vout (white) Vc (DC5V) (red)

Thermistor

BC controller

Solenoid valve

Electronic expansion valve

TH11 (liquid inlet temperature)

TH12 (bypass outlet pressure)

TH15 (bypass outlet temperature)

TH16 (bypass inlet temperature)

SVM *1 SVA

SVB

SVC

LEV1

LEV3

LEV control (liquid refrigerant control)

LEV control (superheat control)

LEV control (subcool control)

Opens for cooling-only, defrosting. Supplies refrigerant to cooling indoor

unit. Supplies refrigerant to heating indoor

unit. Supplies refrigerant to cooling indoor

unit. Liquid level control

pressure control Liquid level control

pressure control

R0=15kΩ B0/100=3460 Rt = 15exp{3460( - )}

273+t

273+0

0˚C : 15kΩ 10˚C :9.7kΩ 20˚C :6.4kΩ 25˚C :5.3kΩ 30˚C :4.3kΩ 40˚C :3.1kΩ

AC 220~240V Open when energized Closed when de-energized

12V DC stepping motor drive 0 to 2000 valve opening pulse

Continuity check by a tester

Same as LEV of indoor unit.

*1. SVM is not built in depending on models.

–72–

[5] Resistance of Temperature Sensor

Thermistor for low temperature Thermistor Ro= 15kΩ ± 3% (TH3 ~ 9) Thermistor R120 = 7.465kΩ ± 2% (TH1, 10)

t = 15exp {3460 ( - )} Rt = 7.465exp {4057 ( - )}

273+t

273+0

273+t

273+120

Resistance (kΩ)

–20 –10 10 20 30 40 500

Resistance (kΩ)

90 100 110 120

Temperature (˚C) Temperature (˚C)

Thermistor R Rt = 33exp {3965 ( - )} Rt = 17exp {4170 ( - )}

o = 33kΩ ± 1% (TH2) Thermistor R50 = 17kΩ ± 2% (THHS)

273+t

273+0

273+t

273+50

Resistance (kΩ)

Temperature (˚C) Temperature (˚C)

–73–

6 REFRIGERANT AMOUNT ADJUSTMENT

Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI, and perform service activities such as decision and adjustment of refrigerant amount on the market.

[1] Refrigerant Amount and Operating Characteristics

The followings are refrigerant amount and operating characteristics which draw special attention.

During cooling operations, required refrigerant amount tends to increase (refrigerant in accumulator decreases)

in proportion to increase in the number of operating indoor units. However, the change of increase rate is small.

During heating operations, liquid level of accumulator is the highest when all the indoor units are operating.

Discharge temperature hardly changes when increasing or decreasing refrigerant amount with accumulator

filled with refrigerant.

During cooling operations, discharge temperature tends to rise at overload than low temperature.

Tendency of

discharge temperature

During heating operations, discharge temperature tends to rise at low temperature than overload.

The lower operating frequency is, the higher discharge temperature tends to become of deteriorated compressor efficiency.

Comparison including control system

Compressor shell temperature is 20~70 degrees higher than low pressure saturation temperature (Te) when refrigerant amount is appropriate.

→ Judged as over replenishment when temperature difference from low pressure saturation temperature (Te) is 10 degrees or less.

[2] Adjustment and Judgement of Refrigerant Amount

(1) Symptom

The symptoms shown in the table below are the signs of excess or lack of refrigerant amount. Be sure to adjust refrigerant amount in refrigerant amount adjustment mode, by checking operation status, judging refrigerant amount, and performing selfdiagnosis with LED, for overall judgement of excess or lack of refrigerant amount.

Emergency stop at 1500 remote controller display (excessive

refrigerant replenishment) Operating frequency does not fully increase, thus resulting in

insufficient capacity Emergency stop at 1102 remote controller display (discharge

temperature trouble) Emergency stop occurs when the remote control display is at

1501. (insufficient refrigerant)

Excessive refrigerant replenishment

Insufficient refrigerant replenishment

Insufficient refrigerant

–74–

for PU(H)Y-(P)200·250YMF-C

(2) Refrigerant Volume Adjustment Operation (PU(H)Y-(P)200·250YMF-C)

1) Operating Characteristics Refrigerant Volume Characteristic items related to operating characteristics and the refrigerant volume are shown below.

If the number of indoor units in operation increases during cooling, the required volume of refrigerant tends to

increase (the amount of refrigerant in the accumulator tends to decrease), but the change is minimal. The liquid level in the accumulator is at its highest when all the indoor units are operating during heating.

If there is refrigerant in the accumulator, even if the volume of refrigerant is increased or decreased, there is practi-

cally no change in the outlet temperature.

During cooling, the discharge temperature rises more easily when there is an overload than when the temperature is low.

Tendency of

discharge Temperature

The compressor shell temperature becomes 20~70 deg. higher than the low pressure saturation temperature (TH2) if the refrigerant volume is appropriate. If the difference with the low pressure saturation temper ature (TH2) is 10 deg. or less, it can be judged that the refrigerant is overcharged.

During heating, the discharge temperature rises more easily when the temperature is low than when there is an overload.

The lower the operating frequency, the less efficient the compressor is, making it easier for the discharge temperature to rise.

Comparison when control is included.

2) Adjusting and Judging the Refrigerant Volume

1 Symptoms

Overcharging with refrigerant can be considered as the cause of the following symptoms. When adjusting the refrigerant volume, be sure that the unit is in the operating condition, and carry out refrigerant volume judgment and self-diagnosis by the LED’s, judging overall whether the volume of refrigerant is in excess or is insufficient. Perform adjustments by running the unit in the refrigerant volume adjustment mode.

Emergency stop occurs when the remote control display is at 1500 (refrigerant

overcharge).

The operating frequency doesn’t rise high enough and capacity is not achieved. Emergency stop occurs when the remote control display is at 1102 (outlet

temperature overheating). Emergency stop occurs when the remote control display is at 1501 (insufficient

refrigerant).

2 Refrigerant Volume a Checking the Operating Condition

Operate all the indoor units on cooling or on heating, checking the discharge temperature, sub-cooling, low pressure saturation temperature, inlet temperature, shell bottom temperature, liquid level, liquid step, etc. and rendering an overall judgment.

Refrigerant overcharge

Insufficient refrigerant

Condition 1 Outlet temperature is high. (125°C or higher) 2 Low pressure saturation temperature is extremely low. 3 Inlet superheating is high (if normal, SH = 20 deg or lower). 4 Shell bottom temperature is high (the difference with the low pressure saturation

temperature is 70 deg. or greater)

5 Shell temperature is low (the difference with the low pressure saturation tem-

perature is 10 deg. or lower).

6 Dischange superheating is low (if normal, SH = 20 deg or higher).

–75–

Judgement

Refrigerant volume tends toward insufficient.

Rifrigerant volume tends toward overcharge.

for PU(H)Y-(P)200·250YMF-C

b Check the refrigerant volume by self-diagnosis using the LED.

Set the self-diagnosis switch (SW1) as shown below and check the past information (history) concerning the refrigerant volume.

1234567 8910

Set SW1 as shown in he figure at right.

If LD8 lights up, it indicates the refrigerant charge abnormal delay state just before emergency stop due to refrigerant overcharge (1500).

3 Additional Refrigerant Charge Volume

At the time of shipping from the factory, the outdoor unit is charged with the amount of coolant shown in the following table, but since no extension piping is included, please carry out additional charging on-site.

Outdoor Unit Model Name PU(H)Y-200YMF-C PU(H)Y-P200YMF-C PU(H)Y-250YMF-C

PU(H)Y-P250YMF-C

Refrigerant Charge Volume 6.5kg 7.0kg 8.0kg 8.5kg

Calculation Formula Calculate the additional refrigerant volume by calculating the size of the extension liquid piping and its length (units: m).

Additional Refrigerant Volume (kg) = (0.12 × L

1) + (0.06 × L2) + (0.024 × L3) + α

1: Length of ø12.7 liquid pipe (m)

L2: Length of ø9.52 liquid pipe (m) L

3: Length of ø6.35 liquid pipe (m)

α: refer to the calculation table.

In the calculation results, round up fractions smaller than 0.01 kg. (Example: 18.54 kg → 18.6 kg)

(α Calculation Table)

Total Capacity of

Connected Indoor Units

~90 1.0 kg

91~180 1.5

181~370 2.0

Caution : (PUHY-P200·250YMF-C)

When charging with refrigerant, be sure to charge from the liquid side. If charging from the gas side, it will cause the refrigerant composition to change inside the unit and the composition of the refrigerant remaining in the canister will also change.

–76–

for PU(H)Y-(P)200·250YMF-C

3) Refrigerant Volume Adjustment Mode Operation 1 Procedure

Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below flow chart.

Notes 1 As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacu-

ate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Notes 2 A refrigerant volume adjustment performed in the cooling mode must be done with a gauge reading of 13 kg/cm2G or

higher. If the pressure does not reach refrigerant cannot be collected halfway. Therefore, collect used refrigerant and evacuate the unit completely, and then fill new refrigerant up to a specified quantity.

Notes 3 Judgment by the AL is at best only a rough guideline. Please do not add refrigerant based on the

AL reading alone. (Be sure to obtain calculations of the correct amount before adding refrigerant.)

Notes 4 When supplementing the refrigerant volume, please be careful to charge with liquid refrigerant.

TH1 Self-diagnosis Switch TH5 Self-diagnosis Switch Pd (High pressure)

12345678910

TH7 Self-diagnosis Switch Tc Self-diagnosis Switch

12345678910

Using these, judge TH1, Tc - TH5 and Tc - TH7.

–77–

In case of PUHY-200, 250YMF-C

for PU(H)Y-(P)200·250YMF-C

Adjustment starts.

Start cooling operation of all indoor units in a test run mode. Note 1

Has the

compressor been

operated for more than

30min?

Was the operation condition stabilized?

The high pressure > 13kg/cm2G?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 115˚C?

3 ≤ TH8-TH2 ≤ 13deg?

Fill refrigerant little by little from the low-pressure side service port.

YES

Note 1) As the refrigerant volume can not be adjusted in the heating mode,

retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Is the

thermostat turned

on/off in order for the indoor

unit to prevent from

frosting?

Stop the refrigerant volume adjustment and retrieve the refrigerant. After evacuating air, fill the specified volume of refrigerant.

Are all indoor units SHs more than 2deg?

3deg ≤ Tc-TH5 ≤ 10deg?

Tc-TH7 > 15deg?

TH1-Tc > 25deg?

Is the LEV opening

degree stable when SH

< 2deg?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

Tc-TH5 < 3deg?

TH8-TH2>13deg?

Retrieve the refrigerant little by little from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

Retrieve the refrigerant little by little from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

*Operate for 5

minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 110˚C?

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

Adjustment completed.

Caution :

• Do not let the drained out refrigerant escape to the outside atmosphere.

• Always be sure to charge with refrigerant from the liquid phase side. (PUHY-P200·250YMF-C)

–78–

In case of PUHY-P200, 250YMF-C

for PU(H)Y-(P)200·250YMF-C

Adjustment starts.

Start cooling operation of all indoor units in a test run mode. Note 1

Has the

compressor been

operated for more than

30min?

Was the operation condition stabilized?

The high pressure > 13kg/cm2G?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 115˚C?

7 ≤ TH8-TH2 ≤ 17deg?

Fill refrigerant little by little from the low-pressure side service port.

YES NO

Note 1)As the refrigerant volume can not be adjusted in the heating mode,

retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Is the

thermostat turned

on/off in order for the indoor

unit to prevent from

frosting?

Stop the refrigerant volume adjustment and retrieve the refrigerant. After evacuating air, fill the specified volume of refrigerant.

Are all indoor units SHs more than 6deg?

3deg ≤ Tc-TH5 ≤ 10deg?

Tc-TH7 > 15deg?

TH1-Tc > 25deg?

Is the LEV opening

degree stable when SH

< 6deg?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

Tc-TH5 < 3deg?

TH8-TH2>17deg?

Retrieve the refrigerant little by little from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

Retrieve the refrigerant little by little from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

*Operate for 5

minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 110˚C?

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the

refrigerant and make a judgement.

Adjustment completed.

Caution: (PUHY-P200·250YMF-C)

Always be sure to charge with refrigerant from the liquid phase side.

–79–

for PU(H)Y-(P)200·250YMF-C

(3) Refrigerant Amount Adjustment Mode Operations (PURY-(P)200·250YMF-C)

1 Procedure

Notes 1 As the refrigerant volume can not be adjusted in the heating mode, retrieve the refrigerant, evacu-

ate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Notes 2 A refrigerant volume adjustment performed in the cooling mode must be done with a gauge reading of 13 kg/cm2G or

Notes 3 Judgment by the AL is at best only a rough guideline. Please do not add refrigerant based on the

AL reading alone. (Be sure to obtain calculations of the correct amount before adding refrigerant.)

Notes 4 When supplementing the refrigerant volume, please be careful to charge with liquid refrigerant.

TH1 SC11

12345678910

SC16 Pd (High pressure)

12345678910

–80–

In case of PURY-200, 250YMF-C

for PURY-(P)200·250YMF-C

Adjustment starts.

Start cooling operation of all indoor units in a test run mode. Note 1

Has the

compressor been

operated for more than

30min?

Was the operation condition stabilized?

The high pressure > 13kg/cm2G?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 115˚C?

Fill refrigerant little by little from the low-pressure side service port.

YES NO

Note 1)As the refrigerant volume can not be adjusted in the heating mode,

retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Is the

thermostat turned

on/off in order for the indoor

unit to prevent from

frosting?

Stop the refrigerant volume adjustment and retrieve the refrigerant. After evacuating air, fill the specified volume of refrigerant.

Are all indoor units SHs more than 2deg?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

5deg ≤ SC11?

Note 2

10 ≤ SC16 ≤ 30deg?

Note 3

Is the LEV opening

degree stable when SH

< 2deg?

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

Retrieve the refrigerant little by little

30deg < SC16?

from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 110˚C?

Adjustment completed.

Fill refrigerant little by little from the low-pressure side service port.

–81–

Note 2)SC11 : Liquid refrigerant sub-cool for BC controller inlet Note 3)SC16 : Liquid refrigerant sub-cool for BC controller outlet

In case of PURY-P200, 250YMF-C

for PURY-(P)200·250YMF-B

Adjustment starts.

Start cooling operation of all indoor units in a test run mode. Note 1

Has the

compressor been

operated for more than

30min?

Was the operation condition stabilized?

The high pressure > 13kg/cm2G?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 115˚C?

Fill refrigerant little by little from the low-pressure side service port.

YES NO

Note 1)As the refrigerant volume can not be adjusted in the heating mode,

retrieve the refrigerant, evacuate air and then fill the specified volume of refrigerant if it is necessary to adjust the refrigerant volume in the winter season.

Is the

thermostat turned

on/off in order for the indoor

unit to prevent from

frosting?

Stop the refrigerant volume adjustment and retrieve the refrigerant. After evacuating air, fill the specified volume of refrigerant.

Are all indoor units SHs more than 6deg?

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

5deg ≤ SC11?

Note 2

10 ≤ SC16 ≤ 30deg?

Note 3

Is the LEV opening

degree stable when SH

< 6deg?

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

Retrieve the refrigerant little by little

30deg < SC16?

from the low-pressure side service port.

Fill refrigerant little by little from the low-pressure side service port.

*Operate for 5 minutes after adjusting the refrigerant and make a judgement.

TH1 ≤ 110˚C?

Adjustment completed.

Fill refrigerant little by little from the low-pressure side service port.

–82–

Note 2)SC11 : Liquid refrigerant sub-cool for BC controller inlet Note 3)SC16 : Liquid refrigerant sub-cool for BC controller outlet

for PURY-(P)200·250YMF-C

1 Time required for reco vering refrigerant from low pressure service port (minute)

Low pressure

(kg/cm

Refrigerant amount

G) (MPa)

3.5~4.5 4.5~5.5 5.5 ~ 7.5

(0.34~0.44) (0.44~0.54) (0.54~0.74)

to be drawn out (kg)

1 4.0 3.5 3.5 2 8.0 7.0 6.5 3 12.0 10.5 10.0 4 16.0 14.0 13.0 5 20.0 18.0 16.5 6 24.0 21.5 19.5 7 28.0 25.0 23.0 8 32.0 28.5 26.0

9 36.0 32.0 29.5 10 40.0 35.5 32.5 11 44.0 39.0 36.0

2 Additional evacuation, refrigerant replacement, and refrigerant replacement

R2 series has unique refrigerant circuit structure which makes possible 2-pipe cooling-heating simultaneous operations. Therefore, in the case of total replacement or replenishment of refrigerant in this system, the following evacuation and refrigerant replenishment procedures are required. 1 Perform evacuation by connecting to system analyzer joint of service port of high pressure ball valve and high

pressure charge plug, and joint of service port of low pressure ball valve and low pressure charge plug.

2 Perform refrigerant charge from low pressure circuit only, after finishing evacuation, closing vacuum pump valve,

shutting off high pressure circuit of system analyzer, and opening valve of refrigerant cylinder. (In case service port of ball valve and charge plug can not be jointed as shown in the figure, use two vacuum pumps and evacuate high pressure side and low pressure side circuits separately.)

Note 1: Though refrigerant gas itself is harmless, airtight room should be opened before gas release for preventing

oxygen shortage.

2: When releasing gas, use blotting paper, etc. so that oil spouted with the gas does not spread out.

A Ball valve of the high pressure side B Service port C Ball valve of the low pressure side D Charge plug E High pressure F Low pressure G Evacuation H Evacuation I Replenish of refrigerant J System analyzer K Lo knob L Hi knob

N Valve O Valve P Flon 22 cylinder Q R407C cylinder R Scale S Vacuum pump

T A high-precision gravimeter measurable up to 0.1kg

P-YMF-B

P-YMF-B : Use a vacuum pump with a reverse flow

check valve

should be used. If you are unable to prepare such a high-precision gravimeter, you may use a charge cylinder.

M 3-way joint

–83–

7 TROUBLESHOOTING

[1] Principal Parts

Pressure Sensor

(1) Judging Failure

1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Turn on switches 1, 3, 5, 6 (High) and 2, 4, 5, 6 (Low) of the digital display select switch (SW1) as shown below, and the sensor pressure of the high pressure/low pressure sensors is displayed digitally by the light emitting diode LD1.

12345678910

High Pressure

Low Pressure

1 In the stopped condition, compare the pressure readings from the gauge and from the LD1 display.

(a) If the gauge pressure is 0~1 kg/cm (b) If the pressure according to the LD1 display is 0~1 kg/cm2G (0.098MPa), there is faulty contact at the connec-

tor, or it is disconnected. Proceed to 4. (c) If the pressure according to the LD1 display is 32 kg/cm (d) If other than (a), (b) or (c), compare the pressure readings during operation. Proceed to 2.

12345678910

G (0.098MPa), the internal pressure is dropping due to gas leakage.

G (3.14MPa) or higher, proceed to 3.

2 Compare the pressure readings from the gauge and from the LD1 display while in the running condition.

(a) If the difference between the two pressures is within 1 kg/cm

G (0.098MPa), both the affected pressure sensor

and the main MAIN board are normal. (b) If the difference between the two pressures exceeds 1 kg/cm

G (0.098MPa), the affected pressure sensor is

faulty (deteriorating performance). (c) If the pressure reading in the LD1 display does not change, the affected pressure sensor is faulty.

3 Disconnect the pressure sensor from the MAIN board and check the pressure according to the LD1 display.

(a) If the pressure is 0~1 kg/cm

G (0.098MPa) on the LD1 display, the affected pressure sensor is faulty.

(b) If the pressure is 32 kg/cm2G (3.14MPa) (in the case of the low pressure sensor, 10 kg/cm2G (0.98MPa)) or

higher, the MAIN board is faulty.

4 Disconnect the pressure sensor from the MAIN board and short out the No. 2 and No. 3 pins of the connector

(63HS, 63LS), then check the pressure by the LD1 display. (a) If the pressure according to the LD1 display is 32 kg/cm

G (3.14MPa) (in the case of the low pressure sensor,

10 kg/cm2G (0.98MPa)) or higher, the affected pressure sensor is faulty. (b) If other than (a), the MAIN board is faulty.

2) Pressure sensor configuration. The pressure sensors are configured in the circuit shown in the figure at right. If DC 5 V is applied between the red and black wires, a voltage corresponding to the voltage between the white and black wires is output and this voltage is picked up by the microcomputer. Output voltages are as shown below.

High Pressure 0.1 V per 1 kg/cm

G (0.098MPa)

Low Pressure 0.3 V per 1 kg/cm2G (0.098MPa)

–84–

Connector

63HS/

63LS

Vout 0.5~3.5 V

GND (Black) Vout (White) Vcc (DC5V) (Red)

* Connector connection specifications on the pressure sensor body side.

The connector’s pin numbers on the pressure sensor body side differ from the pin numbers on the main circuit board side.

Sensor Body Side MAIN Board Side

Vcc Pin 1 Pin 3

Vout Pin 2 Pin 2

GND Pin 3 Pin 1

Solenoid Valve (SV1, SV2) (PU(H)Y-200, 250YMF-C)

Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the following parts are ON or OFF. When a LED lights up, it indicates that the relay is ON.

SW1

12345678910

12345678

LED

SV2SV1

1) In the case of SV1 (Bypass Valve) (a) When the compressor starts, SV1 is ON for 4 minutes, so check operation by whether the solenoid valve is

emitting an operating noise.

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

2) In the case of SV2 (Bypass) (a) SV2 goes ON in accordance with the rise in the high pressure in the cooling mode and heating mode, so check

its operation by the LED display and the operating noise emitted by the solenoid valve.

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

PU(H)Y-P200, 250YMF-C

12345678910

1 2 3 4 5 6 7 8

LED

SV2SV1

SV4SV3

1) In the case of SV1 (Bypass Valve) (a) When the compressor starts, SV1 is ON for 4 minutes, so check operation by whether the solenoid valve is

emitting an operating noise.

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

2) In the case of SV2 (Bypass) (a) SV2 goes ON in accordance with the rise in the high pressure in the cooling mode and heating mode, so check

its operation by the LED display and the operating noise emitted by the solenoid valve.

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

3) SV3, 4 (Control of heat exchanger capacity) (a) Operations can be confirmed by LED display and operating sound of solenoid valve, because one or more of

SV3, 4 are turned on depending on conditions during cooling-only operations.

–85–

Solenoid Valve (SV1~6) (PURY-(P)200·250YMF-C)

SW1

12345678910

12345678

SV6SV5

LED

SV4SV3SV2SV1

1) In the case of SV1 (Bypass Valve) (a) When the compressor starts, SV1 is ON for 4 minutes, so check operation by whether the solenoid valve is

emitting an operating noise.

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

2) In the case of SV2 (Bypass) (a) SV2 goes ON in accordance with the rise in the high pressure in the cooling mode and heating mode, so check

its operation by the LED display and the operating noise emitted by the solenoid valve. (Conditions during operation: See Control of Outdoor Unit.)

(b) Changes in the operating condition by solenoid valve operation can be confirmed by the temperature of the

bypass circuit and the sound of the refrigerant.

3) SV3 ~ 6 (Control of heat exchanger capacity) (a) Operations can be confirmed by LED display and operating sound of solenoid valve, because one or more of

SV3 ~5 are turned on depending on conditions during cooling-only operations.

(b) Operation can be confirmed by LED display and operating sound of solenoid valve, because all of SV3 ~ 5 are

turned on during heating-only operations.

SV3 ~6 are turned on depending on conditions during cooling-principal and heating-principal operations.

–86–

(d) The refrigerant flow is as following figure. Hot gas (high pressured) flows in cooling mode and cool gas/liquid

(low pressured) flows in heating mode. Please refer to the Refrigerant Circuit Diagram. And, ON/OFF of Solenoid valve is depends on the amount of running indoor units, ambient temperature and so on. So please check by LED Monitor Display. The SV coil is taken off, then it is possible to open caps and check plungers. But the special tool which is on the Service Parts List is needed.

* Closed torque : 13kg·m (1.3N·m)

–87–

Outdoor LEV

The valve opening angle changes in proportion to the number of pulses. (Connections between the outdoor unit’s MAIN board and SLEV, LEV1 (PU(H)Y-(P)200·250YMF-C))

Pulse Signal Output and Valve Operation

Output (phase)

Output states

1234567 8

ø1 ON OFF OFF OFF OFF OFF ON ON ø2 ON ON ON OFF OFF OFF OFF OFF ø3 OFF OFF ON ON ON OFF OFF OFF ø4 OFF OFF OFF OFF ON ON ON OFF

LEV Valve Closing and Valve Opening Operations

Valve Closing

Valve Opening

Valve Opening Angle (Flow Rate)

Fully Open 480 pulses

Output pulses change in the following orders when the

Valve is Closed 1→2→3→4→5→6→7→8→1 Valve is Open 8→7→6→5→4→3→2→1→8

*1. When the LEV opening angle does not change, all the

output phases are off.

2. When the output is out of phase or remains ON continuously, the motor cannot run smoothly, but move jerkily and vibrates.

* When the power is switched ON, a 520 pulse valve

opening signal is output to make sure the valve’s position, so that it is definitely at point A. (The pulse signal is output for approximately 17 seconds.)

* When the valve operates smoothly, there is no sound

from the LEV and no vibration occurs, but when the valve is locked, it emits a noise.

* Whether a sound is being emitted or not can be

determined by holding a screwdriver, etc. against it, then placing your ear against the handle.

* If there is liquid refrigerant inside the LEV, the sound

may become lower.

Pulse Count

–88–

Judgment methods and likely failure mode

Caution:

The specifications of the outdoor unit (outdoor LEV) and indoor unit (indoor LEV) differ. For this reason, there are cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right column.

Failure Mode Judgment Method Treatment Affected LEV

Microcomputer driver circuit failure

1 Disconnect the control board connector and connect

the check LED as shown in the figure below.

Indoor, BC controller

When the base power supply is turned on, the indoor LEV outputs pulse signals for 10 seconds, the outdoor LEV outputs pulse signals for 17 seconds, and BC controller outputs pulse signals for 10-20 seconds. If the LED does not light up, or lights up and remains on, the driver circuit is abnormal.

Outdoor

In the case of driver circuit failure, replace the control board.

Indoor

BC controller

Outdoor

LEV mechanism is locked.

The LEV motor coils have a disconnected wire or is shorted.

Fully closed failure (valve leaks)

1 If the LEV is locked up, the drive motor turns with no

load and a small clicking sound is generated. Generation of this sound when the LEV is fully closed or fully open is abnormal.

Measure the resistance between the coils (red - white, red

- orange, brown - yellow, brown - blue) using a tester. They are normal if the resistance is within 150Ω ± 10%.

Measure the resistance between the coils (gray - orange, gray - red, gray - yellow, gray - black) using a tester. They are normal if the resistance is within 46Ω ± 3%.

1 If you are checking the indoor unit’s LEV, operate the

indoor unit’s blower and the other indoor units in the cooling mode, then check the piping temperatures (liquid pipe temperatures) of the indoor units by the operation monitor through the heat source unit’s control board. When the fan is running, the linear expansion valve is fully closed, so if there is leakage,

Thermistor liquid pipe (temperature sensor)

Linear Expansion Valve

minimal leakage, it is not necessary to replace the LEV if there are no other effects.

the temperature sensed by the thermistor (liquid pipe temperature sensor) will become low. If the temperature is considerably low compared to the remote control’s intake temperature display, it can be judged that there is a fully closed failure. In the case of

Replace the LEV.

Replace the LEV coils.

If there is a large amount of leakage, replace the LEV.

Indoor

BC controller

Outdoor

Indoor

BC controller

Outdoor

Indoor

BC controller

Faulty wire connections in the connector or faulty contact.

1 Check for pins not fully inserted on the connector and

check the colors of the lead wires visually.

2 Disconnect the control board’s connector and conduct

a continuity check using a tester.

–89–

Check the continuity at the places where trouble is found.

Indoor

BC controller

Outdoor

Outdoor LEV (SLEV) Coil Removal Procedure (configuration) As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated.

Coils

Stopper

Lead Wires

<Removing the Coils> Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then pull out the coils toward the top. If they catch on the stopper and are difficult to take out, turn the coils left and right until the stoppers are free from the stopper indentations, then pull the coils out. If you take out the coils only without gripping the body, undue force will be applied to the piping and the pipe may be bent over , so be sure to fasten the body in such a w ay that it will not move.

Body

Indentation for Stopper (12 places around the circumference)

Part A

<Installing the Coils> Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then insert the coils from the top, inserting the coils’ stopper securely in one of the indentations on the body. (There are four indentations for the stopper on the body around its circumference, and it doesn’t matter which indentation is used. However, be careful not to apply undue force to the lead wires or twist them around inside the body.) If the coils are inserted without gripping the body, it may exert undue force on the piping, causing it to become bent, so be sure to hold the body firmly so that it won’t move when installing the coils.

Part A

–90–

Check Valves Block (PURY-(P)200·250YMF-C)

The refrigerant flow in the pipe 6, 7, 8 and 9 are depend on ON/OFF of the SV3, 4, 5 and 6. Please confirm by LED monitor display. You can open the cap of valve A, B and C, but 3 types of hexagon socket screw keys. The size is as follows.

* Closed torque : A : 1.7kg·m (0.17N·m)

B : 20kg·m (2.0N·m) C : 13kg·m (1.3N·m)

–91–

Intelligent Power Module (IPM)

Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting. Specified resistance value is dependent on tester type to be used for resistance measurement, because diode inside IPM has non-linearity, thus difference of impedance and voltage in tester being influential. As the internal impedance of resistance range of analog tester equals to the center value of meter indication, the affect of internal impedance can be minimized if the tester having close center value of resistance range. Because internal voltage is normally 1.5V, the tester to be used for troubleshooting of IPM should satisfy the following conditions.

Internal voltage 1.5V (Power source : one dry cell battery) Central value of resistance range 10 ~ 40Ω

The measured values for troubleshooting are shown in the table below. (Use the minimum range for tester resistance range.)

• External view • Internal circuit diagram

1471016

• Judged value

Tester

Tester –

P U V

UVWN

∞∞∞∞

2~ 100Ω

2~ 100Ω2~100Ω2~100Ω2~100Ω

Pre-Driver

1 6

Pre-Driver

4 9

Pre-Driver

∞

7 11

Pre-Driver

∞ ∞

Over heating

protection circuit

B N

Diode stack Perform continuity check with tester. Judged as normal if the following characteristics are observed. (Use the minimum range for tester resistance range.)

Tester ⊕

Tester -

1 10~50Ω∞ 2 10~50Ω∞ 3 10~50Ω∞

Tester -

Tester

123

⊕

1 ∞ 10~50Ω

2 ∞ 10~50Ω 3 ∞ 10~50Ω

1 2 3

–

+–

–92–

(2) Trouble and remedy of remote controller

Symptom Cause Checking method & countermeasure

Despite pressing of remote controller switch, operation does not start with no electronic sound.

(No powering signal

appears.)

At about 10 seconds after turning remote controller operation switch ON, the display distinguishes and the operation stops.

1) M-NET transmission power source is not supplied from outdoor unit. 1 Main power source of outdoor unit is not

connected.

2 Slipping off of connector on outdoor unit circuit

board. Main board : CNS1, CNVCC3 INV board : CNAC2, CNVCC1, CNL2

3 Faulty power source circuit of outdoor unit.

• Faulty INV board,

• Blown fuse (F1 on INV board)

• Broken diode stack

• Broken resistor (R1) for rush current protection

2) Short circuit of transmission line.

3) Erroneous wiring of M-NET transmission line at outdoor unit. 1 Transmission line disconnection or slipping off from terminal

block.

2 Erroneous connection of indoor/outdoor transmission line to

TB7.

4) Slipping off of transmission wiring at remote controller.

5) Faulty remote controller.

1) Power source is not fed to indoor unit from transformer.

1 Main power source of indoor unit is not turned on. 2 Slipping off of connector (CND, CNT, CN3T) on indoor controller board. 3 Blown fuse on indoor controller board. 4 Faulty or disconnected transformer of indoor unit. 5 Faulty indoor controller board.

2) Faulty outdoor control circuit board or being out of control. As normal transmission is failed between indoor and outdoor units, outdoor unit model can not be recognized.

a) Check transmission terminal block of

remote controller for voltage. i) In case of 17 ~ 30V

→ Faulty network remote controller

ii) In case of less than 17V

→ See “Transmission Power Circuit

(30V) Check Procedure”.

The cause of 2) and 3) is displayed with self-diagnosis LED for 7102 error.

Checking method & countermeasure

Check indoor LED3

Lighting?

Lighting

Check for the change of LED display by operating dip switch SW1 for self-diagnosis.

Extinguishing or unable to confirm

Check indoor unit power source terminal block voltage

AC 220~240V?

YES

Check fuse on circuit board

Blown?

Check connector slipping off (CND, CNT, CN3T)

Slipped off?

Check transformer resistance value

Within rated?

YES

Check self-diagnosis function of outdoor unit

Changed?

YES

Check main power source of power source wiring.

Check 220V~240V circuit for short circuit and ground fault.

Improper connector connection

Check cause of transformer disconnection.

•Ground fault on circuit board

•Ground fault on sensor, LEV

Apply power source again.

Check self-diagnosis function after powering outdoor unit again.

Faulty outdoor unit control circuit board

Repair faulty point.

YES

Faulty indoor controller board

Changed?

YES

Casual trouble

*1 Check the transformer in accordance with the “TROUBLE SHOOTING” in the indoor unit’s service handbook.

–93–

Symptom Cause

3 “HO” display on re-

mote controller does not disappear and switch is ineffective.

(Without using MELANS)

1) Outdoor unit address is set to “000.”

2) Erroneous address.

1 Address setting miss of indoor unit to be coupled with remote controller. 2 Address setting miss of remote controller.

3) Faulty wiring of transmission terminal block TB5 of indoor unit in the same group with remote controller.

4) Centralized control SW2-1 of outdoor unit is turned ON.

5) Setting to interlocking system from indoor unit (Switch 3-1 = OFF), while Fresh Master is intended to use by remote controller operation (indoor unit attribute).

6) Disconnection or faulty wiring of indoor unit transmission line.

7) Disconnection between indoor unit M-NET transmission line terminal block (TB5) and connector CN2M.

8) More than 2 sets of power supply connector (CN40) are inserted into centralized control transmission line of outdoor unit.

9) Faulty outdoor unit control circuit board.

10)Faulty indoor controller board.

11)Faulty remote controller.

(Interlocking control with MELANS)

12)No grouping registration from MELANS (Neglecting to set the relation between indoor unit and network remote controller).

13)Slipping off of centralized control transmission line (TB7) at outdoor unit.

14)At system connected with MELANS, power supply connector (CN40) is inserted to centralized control transmission line of outdoor unit.

Checking method & countermeasure

(Indoor unit = remote controller - 100.)

(Remote controller = indoor unit + 100.)

In case no MELANS used

Same symptom for all units in a single refrigerant system?

YES

Check outdoor unit address

51 ~ 100?

YES

Check centralized control switch SW2-1 at outdoor unit

ON?

Faulty outdoor unit control circuit board

YES

Outdoor unit address setting miss

Switch setting miss Make it ON → OFF

Address setting miss of remote controller

Indoor address setting miss

T r ansmission line wiring miss of indoor unit M-NET

Slipping off of CN2M connector

Confirm address of remote controller with “HO” displayed

Indoor unit + 100?

Check address of coupling indoor unit

Remote controller

-100? YES

Check voltage of indoor unit MNET transmission terminal block

17 ~ 30V?

Check connection between indoor unit M-NET transmission terminal block (TB5) and connector CN2M

YES

Check Fresh Master SW3-1

YES

Slipping off?

Faulty indoor controller board or remote controller

ON?

YES

Repair spot in trouble

Setting miss of Fresh Master SW3-1

In case with MELANS used

When MELANS is used, “HO” display on the remote controller will disappear at the group registration of the indoor unit and local remote controller. If “HO” does not disappear after the registration, check the items 12) ~ 14) in the Cause column.

–94–

Symptom Cause Checking method & countermeasure

4 “88” appears on re-

mote controller at the registration and access remote controller

[Generates at registration and confirmation]

1) Erroneous address of unit to be coupled.

2) Slipping off of transmission line of unit to be coupled (No connection).

3) Faulty circuit board of unit to be coupled.

4) Installation miss of transmission line.

a) Confirm the address of unit to be

coupled.

b) Check the connection of transmission

line.

c) Check the transmission terminal block

voltage of unit to be coupled. i) Normal if voltage is DC17 ~ 30V ii) Check the item d) in case other than i).

[Confirmation of different refrigerant system controller]

5) Breaking of power source of outdoor unit to be confirmed.

6) Slipping off of centralized control transmission line (TB7) of outdoor unit.

7) Power supply connector (CN40) is not inserted into centralized control transmission line in grouping with different refrigerant system without using MELANS.

8) More than 2 sets of power supply connector are inserted into the centralized control transmission line of outdoor unit.

9) In the system connected with MELANS, power supply connector (CN40) is inserted into the centralized control transmission line of outdoor unit.

10)Short circuit of centralized control transmission line.

d) Confirm the power source of outdoor unit

to be coupled with the unit to be confirmed.

e) Confirm that the centralized control

transmission line (TB7) of outdoor unit is not slipped off.

f) Confirm the voltage of centralized control

transmission line. i) Normal in case of 10V ~ 30V ii) Check the items 7) ~ 10) left in case

that other than i).

–95–

Transmission Power Circuit (30 V) Check Procedure If “” is not displayed by the remote control, investigate the points of the trouble by the following procedure and correct it.

No. Check Item Judgment Response

Disconnect the transmission line from TB3 and check the TB3 voltage.

DC24~30 V

Check the transmission line for the following, and correct any defects. Broken wire, short circuit, grounding, faulty contact.

Check if the following connectors are disconnected in the outdoor unit’s control box. MAIN Board: CNS1, CNVCC3, CNVCC4 INV Board: CNVCC2, CNVCC4, CNL2, CNR, CNAC2

Disconnect the wires from CNVCC3 on the Main board and check the voltage between pins 1 and 3 on the wire side of the CNVCC3.

Tester + ..... 1 pin

Tester - ..... 3 pin

Disconnect the wiring from CNVCC2 on the INV board and check the voltage between pins 1 and 3 of CNVCC2.

Tester + ..... 1 pin

Tester - ..... 3 pin

Disconnect the wiring from CNL2 on the INV board, and check the resistance at both ends of choke coil L2.

Disconnect the wiring from CNR on the INV board, and check the resistance at both ends of R7.

Except the above-mentioned Connector disconnected

Except the above-mentioned

DC24~30 V

Except the above-mentioned DC24~30 V

Except the above-mentioned

0.5~2.5Ω Except the above-mentioned 19~25Ω Except the above-mentioned

to No. 2 Connect the connectors as shown on the electric

wiring diagram plate. to No. 3

Check the wiring between CNS1 and TB3 for the following, and correct any defects. Broken wire, short circuit, grounding, faulty contact. If there is no trouble, replace the Main board.

to No. 4 Check the wiring between CNVCC2 and

CNVCC3 for the following, and correct any defects. Broken wire, short circuit, grounding, faulty contact.

to No. 5 to No. 6 Replace choke coil L2. to No. 7 Replace R7.

Check the resistance at both ends of F01 on the INV board.

Check the voltage between pins 1 and 3 of CNAC2 on the INV board.

Check the voltage between L2 and N on power supply terminal block TB1.

0Ω Except the above-mentioned AC198~264 V Except the above-mentioned AC198~264 V

Except the above-mentioned

to No. 8 Replace F01 Replace the INV board. to No. 9 Check the wiring to CNAC2 for the following and

correct any defects. Broken wire, faulty contact.

Check the power supply wiring and base power supply, and correct any defects.

–96–

(3) Investigation of transmission wave shape/noise

Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation.

1) Symptom caused by the noise entered into transmission line

Cause Erroneous operation Error code

Noise entered into transmission line

Signal changes and is misjudged as the signal of other address.

Transmission wave shape changes to other signal due to

6600

6602

noise. Transmission wave shape changes due to noise, and can

6607

not be received normally thus providing no reply (ACK). Transmission can not be made continuously due to the

6603

entry of fine noise. Transmission can be made normally, but reply (ACK) or

answer can not be issued normally due to noise.

6607 6608

2) Method to confirm wave shape

No fine noise allowed *1

VHL

52 µs Logical

VBN

52 µs value “0”

Logical

52 µs value “1”

52 µs52 µs

No fine noise allowed *1

Check the wave shape of transmission line with an oscilloscope to confirm that the following conditions are being satisfied.

1 The figure should be 104µs/bit ± 1%. 2 No finer wave shape (noise) than the transmission signal (52µs ± 1%) should be allowed. *1 3 The sectional voltage level of transmission signal should be as follows.

Logic value Transmission line voltage level

0VHL = 2.0V or more 1VBN = 1.3V or less

*1 However, minute noise from the DC-DC converter or inverter operation may be picked up.

–97–

3) Checking and measures to be taken

(a) Measures against noise

Check the items below when noise can be confirmed on wave shape or the error code in the item 1) is generated.

Items to be checked Measures to be taken

1 Wiring of transmission and power lines in

crossing.

2 Wiring of transmission line with that of other

system in bundle.

3 Use of shield wire for transmission line (for

both indoor unit control and centralized control).

4 Repeating of shield at the repeating of

transmission line with indoor unit.

Checking for wiring method

5 Are the unit and transmission lines grounded

as instructed in the INSTALLATION MANUAL?

6 Earthing of the shield of transmission line (for

indoor unit control) to outdoor unit.

7 Arrangement for the shield of transmission line

(for centralized control).

Check for earthing

Isolate transmission line from power line (5cm or more). Never put them in a same conduit.

Wire transmission line isolating from other transmission line. Wiring in bundle may cause erroneous operation like crosstalk.

Use specified transmission wire.

Type : Shield line CVVS/CPEVS Wire diameter : 1.25mm2 or more

The transmission line is wired with 2-jumper system. Wire the shield with jumper system as same for transmission line. When the jumper wiring is not applied to the shield, the effect against noise will be reduced.

Connect to ground as shown in the INSTALLATION MANUAL.

One point earthing should be made at outdoor unit. Without earthing, transmission signal may be changed as the noise on the transmission line has no way to escape.

For the shield earth of the transmission line for centralized control, the effect of noise can be minimized if it is from one of the outdoor units in case of the group operation with different refrigerant systems, and from the upper rank controller in case the upper rank controller is used. However, the environment against noise such as the distance of transmission line, the number of connecting sets, the type of connecting controller, and the place of installation, is different for the wiring for centralized control. Therefore, the state of the work should be checked as follows. a) No earthing

• Group operation with different refrigerant systems One point earthing at outdoor unit

• Upper rank controller is used Earthing at the upper rank controller

b) Error is generated even though one point earth is being con-

nected. Earth shield at all outdoor units.

Connect to ground as shown in the user’s manual.

(b) When the wave height value of transmission wave shape is low, 6607 error is generated, or remote controller is

under the state of “HO.”

Items to be checked Measures to be taken

8 The farthest distance of transmission line is

exceeding 200m.

9 The types of transmission lines are different.

0 No transmission power (30V) is being supplied

to the idoor unit or the remote control.

A Faulty indoor unit/remote controller.

Confirm that the farthest distance from outdoor unit to indoor unit/ remote controller is less than 200m.

Use the transmission wire specified.

Type of transmission line : Shield wire CVVS/CPEVS Wire dia. of transmission line : 1.25mm2 or more

Refer to “Transmission Power Supply (30V) Circuit Check Procedure.”

Replace outdoor unit circuit board or remote controller.

–98–

4) Treatment of Inverter and Compressor Troubles If the compressor does not work when error codes 4240, 4250, 4340 or 4350 are detected, determine the point of malfunction by following the steps in the LED monitor display and countermeasures depending on the check code displayed, then perform the procedures below.

No. Check Item Symptoms Treatment

How many hours was the power kept on before

operation?

1 If it was kept on for 12 hours or

longer as specified.

2 It was kept on for less than the

specified period.

Go to [2].

Go to [2] after keeping the power on for the specified time.

When it is restarted, does

the trouble reappear?

Run the outdoor unit with the wiring to the compressor disconnected. At this time, change SW1-1 on the INV board to ON. Note) The terminals of the 3 disconnected wires should be isolated from each other.

*1 [Cautions when measuring the voltage and current of the inverter’s power circuit.]

1 The compressor stops and the

same error code is displayed.

1 The Inverter stops and the same

error code is displayed.

2 If the inverter’s output voltage is

output with good balance, *1.

3 If the balance in the inverter’s

output voltage is not good or if the inverter’s output voltages are all 0 V (a digital tester cannot be used) *1.

Perform the check of wiring shown in the explanation of each error code.

Check the IPM is faulty. (Go to “Individual Parts Failure Judgment Methods.”)

Check the coil resistance and insulation resistance of the compressor, and if it is normal, run it again, and if the trouble occurs again, replace the compressor. * Insulation resistance : 2MΩ or more

Coil resistance : 0.359 ~ 0.716Ω

Check the IPM. Judge that the IPM is faulty. (Go to “Indi- vidual Parts Failure Judgment Methods.”) If the IPM is normal, replace the G/A board, then perform this item again with SW1-1 ON. If the problem is not solved, replace the INV board. If the problem is solved and you connect the compressor again, turn SW1-1 OFF again. Check the compressor’s coil resistance and insulation resistance.

Since the voltage and current on the inverter’s power supply side and its output side do not have a sine waveform, the measurement values will differ depending on the measuring instrument and the circuit measured. In particular, as the inverter’s output voltage has a pulse waveform, the output frequency also changes, so differences in measurement values will be great depending on the measuring instrument.

1 When checking if the inverter’s output voltage is unbalanced or not (relative comparison of the voltages between

each of the lines), if you are testing with a portable tester, be sure to use an analog tester. Use a tester of a type which can be used to judge if the IPM or diode module is faulty. In particular, in cases where the inverter’s output frequency is low, there are cases where the variations in measured voltage values between the different wires will be great when a portable digital tester is used, when in actuality they are virtually equal, and there is danger of judging that the inverter is faulty.

2 It is recommended when checking the inverter’s output voltage values (when measuring absolute values), that, if a

measuring device for business frequencies is used, a rectified voltage meter (with a Correct measurement values cannot be obtained with an ordinary portable tester. (either analog or digital)

symbol) be used.

–99–

Mitsubishi MEE99K029G Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual