Mitsubishi HWE09060 Service Manual

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Page 1

AIR CONDITIONERS

MODEL

PUHY-P250, P500, P750Y(S)HM-A PFAV-P250, P500, P750VM-E PFAV-P300, P600, P900VM-E-F

Service Handbook

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WARNING

CAUTION

WARNING

Safety Precautions

Before installing the unit, thoroughly read the following safety precautions. Observe these safety precautions for your safety.

This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid

the risk of serious injury or death.

This symbol is intended to alert the user to the presence of important instructions that must be followed to avoid

the risk of serious injury or damage to the unit.

After reading this manual, give it to the user to retain for future reference. Keep this manual for easy reference. When the unit is moved or repaired, give this manual to those who provide these

services. When the user changes, make sure that the new user receives this manual.

Ask your dealer or a qualified technician to install the unit.

Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire.

Properly install the unit on a surface that can withstand the weight of the unit.

Unit installed on an unstable surface may fall and cause injury.

Only use specified cables. Securely connect each cable so that the terminals do not carry the weight of the cable.

Improperly connected or fixed cables may produce heat and start a fire.

Take appropriate safety measures against strong winds and earthquakes to prevent the unit from falling.

If the unit is not installed properly, the unit may fall and cause serious injury to the person or damage to the unit.

Do not make any modifications or alterations to the unit. Consult your dealer for repair.

Improper repair may result in water leakage, electric shock, smoke, and/or fire.

In the event of a refrigerant leak, thoroughly ventilate the room.

If refrigerant gas leaks and comes in contact with an open flame, poisonous gases will be produced.

When installing the All-Fresh type units, take it into consideration that the outside air may be discharged directly into the room when the thermo is turned off.

Direct exposure to outdoor air may have an adverse effect on health. It may also result in food spoilage.

Properly install the unit according to the instructions in the installation manual.

Improper installation may result in water leakage, electric shock, smoke, and/or fire.

Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual, and a dedicated circuit must be used.

Insufficient capacity of the power supply circuit or improper installation may result in malfunctions of the unit, electric shock, smoke, and/or fire.

To reduce the risk of injury, do not sit, stand, or place objects on the unit.

Do not touch the heat exchanger fins.

The fins are sharp and dangerous.

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WARNING

Securely attach the terminal block cover (panel) to the unit.

If the terminal block cover (panel) is not installed properly, dust and/or water may infiltrate and pose a risk of electric shock, smoke, and/or fire.

After completing the service work, check for a gas leak.

If leaked refrigerant is exposed to a heat source, such as a fan heater, stove, or electric grill, poisonous gases may be produced.

Only use the type of refrigerant that is indicated on the unit when installing or reinstalling the unit.

Infiltration of any other type of refrigerant or air into the unit may adversely affect the refrigerant cycle and may cause the pipes to burst or explode.

When installing the unit in a small room, exercise caution and take measures against leaked refrigerant reaching the limiting concentration.

Consult your dealer with any questions regarding limiting concentrations and for precautionary measures before installing the unit. Leaked refrigerant gas exceeding the limiting concentration causes oxygen deficiency.

Consult your dealer or a specialist when moving or reinstalling the unit.

Improper installation may result in water leakage, electric shock, and/or fire.

To reduce the risk of injury, wear protective gear, such as gloves and safety goggles.

Do not try to defeat the safety features of the unit.

Forced operation of the pressure switch or the temperature switch by defeating the safety features of these devices, or the use of accessories other than the ones that are recommended by MITSUBISHI may result in smoke, fire, and/or explosion.

Only use accessories recommended by MITSUBISHI.

Ask a qualified technician to install the unit. Improper installation by the user may result in water leakage, electric shock, smoke, and/or fire.

Control box houses high-voltage parts.

When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. (It takes about 10 minutes to discharge electricity after the power supply is turned off.)

Hold the front panel up when opening it to keep it from falling forward.

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CAUTION

Precautions for handling units for use with R410A

Do not use the existing refrigerant piping.

A large amount of chlorine that may be contained in the re-

sidual refrigerant and refrigerating machine oil in the existing piping may cause the refrigerating machine oil in the new unit to deteriorate.

R410A is a high-pressure refrigerant and can cause the

existing pipes to burst.

Use refrigerant pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water.

These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate.

Store the pipes to be installed indoors, and keep both ends of the pipes sealed until immediately before brazing. (Keep elbows and other joints wrapped in plastic.)

Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerating machine oil to deteriorate or cause the unit to malfunction.

Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.

Infiltration of a large amount of mineral oil may cause the refrigerating machine oil to deteriorate.

Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.

If gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and may result in performance loss.

Use a vacuum pump with a reverse-flow check valve.

If a vacuum pump that is not equipped with a reverse-flow check valve is used, the vacuum pump oil may flow into the refrigerant cycle and cause the refrigerating machine oil to deteriorate.

Prepare tools for exclusive use with R410A. Do not use the following tools if they have been used with the conventional refrigerant (gauge manifold, charging hose, gas leak detector, reverse-flow check valve, refrigerant charge base, vacuum gauge, and refrigerant recovery equipment.).

If the refrigerant or the refrigerating machine oil left on

these tools are mixed in with R410A, it may cause the refrigerating machine oil to deteriorate.

Infiltration of water may cause the refrigerating machine

oil to deteriorate.

Gas leak detectors for conventional refrigerants will not

detect an R410A leak because R410A is free of chlorine.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of the refrigerant will change, and the unit may experience power loss.

Exercise special care when handling the tools for use with R410A.

Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerating machine oil to deteriorate.

Only use refrigerant R410A.

The use of other types of refrigerant that contain chlorine (i.e. R22) may cause the refrigerating machine oil to deteriorate.

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Before installing the unit

WARNING

Do not install the unit where a gas leak may occur.

If gaseous refrigerant leaks and piles up around the unit, it may be ignited.

Do not use the unit to keep food items, animals, plants, artifacts, or for other special purposes.

The unit is not designed to preserve food products.

Do not use the unit in an unusual environment.

Do not install the unit where a large amount of oil or steam

is present or where acidic or alkaline solutions or chemical sprays are used frequently. Doing so may lead to a remarkable drop in performance, electric shock, malfunctions, smoke, and/or fire.

The presence of organic solvents or corrosive gas (i.e.

ammonia, sulfur compounds, and acid) may cause gas leakage or water leakage.

When installing the unit in a hospital, take appropriate measures to reduce noise interference.

High-frequency medical equipment may interfere with the normal operation of the air conditioner or vice versa.

Do not install the unit on or over things that cannot get wet.

When the humidity level exceeds 80% or if the drainage system is clogged, the indoor unit may drip water. Drain water is also discharged from the outdoor unit. Install a centralized drainage system if necessary.

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CAUTION

Before installing the unit (moving and reinstalling the unit) and performing electrical work

Properly ground the unit.

Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, or grounding wire from a telephone pole. Improper grounding may result in electric shock, smoke, fire, and/or malfunction due to noise interference.

Do not put tension on the power supply wires.

If tension is put on the wires, they may break and result in excessive heat, smoke, and/or fire.

Install an earth leakage breaker to avoid the risk of electric shock.

Failure to install an earth leakage breaker may result in electric shock, smoke, and/or fire.

Use the kind of power supply wires that are specified in the installation manual.

The use of wrong kind of power supply wires may result in current leak, electric shock, and/or fire.

Use breakers and fuses (current breaker, remote switch <switch + Type-B fuse>, moulded case circuit breaker) with the proper current capacity.

The use of wrong capacity fuses, steel wires, or copper wires may result in malfunctions, smoke, and/or fire.

Periodically check the installation base for damage.

If the unit is left on a damaged platform, it may fall and cause injury.

Properly install the drain pipes according to the instructions in the installation manual. Keep them insulated to avoid dew condensation.

Improper plumbing work may result in water leakage and damage to the furnishings.

Exercise caution when transporting products.

Products weighing more than 20 kg should not be carried

alone.

Do not carry the product by the PP bands that are used on

some products.

Do not touch the heat exchanger fins. They are sharp and

dangerous.

When lifting the unit with a crane, secure all four corners

to prevent the unit from falling.

Properly dispose of the packing materials.

Nails and wood pieces in the package may pose a risk of

injury.

Plastic bags may pose a risk of choking hazard to chil-

dren. Tear plastic bags into pieces before disposing of them.

Do not spray water on the air conditioner or immerse the air conditioner in water.

Otherwise, electric shock and/or fire may result.

When handling units, always wear protective gloves to protect your hands from metal parts and high-temperature parts.

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Before the test run

CAUTION

Turn on the unit at least 12 hours before the test run.

Keep the unit turned on throughout the season. If the unit is turned off in the middle of a season, it may result in malfunctions.

To avoid the risk of electric shock or malfunction of the unit, do not operate switches with wet hands.

Do not touch the refrigerant pipes with bare hands during and immediately after operation.

During or immediately after operation, certain parts of the unit such as pipes and compressor may be either very cold or hot, depending on the state of the refrigerant in the unit at the time. To reduce the risk of frost bites and burns, do not touch these parts with bare hands.

Do not operate the unit without panels and safety guards.

Rotating, high-temperature, or high-voltage parts on the unit pose a risk of burns and/or electric shock.

Do not turn off the power immediately after stopping the operation.

Keep the unit on for at least five minutes before turning off the power to prevent water leakage or malfunction.

Do not operate the unit without the air filter.

Dust particles may build up in the system and cause malfunctions.

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CONTENTS

I Read Before Servicing

[1] Read Before Servicing.............................................................................................................. 3

[2] Necessary Tools and Materials ................................................................................................ 4

[3] Piping Materials ........................................................................................................................ 6

[4] Storage of Piping ...................................................................................................................... 8

[5] Pipe Processing........................................................................................................................ 8

[6] Brazing...................................................................................................................................... 9

[7] Air Tightness Test................................................................................................................... 10

[8] Vacuum Drying (Evacuation) ..................................................................................................11

[9] Refrigerant Charging .............................................................................................................. 12

[10] Remedies to be taken in case of a Refrigerant Leak............................................................ 12

[11] Characteristics of the Conventional and the New Refrigerants ............................................ 13

[12] Notes on Refrigerating Machine Oil...................................................................................... 14

II Restrictions

[1] System configuration .............................................................................................................. 17

[2] Types and Maximum allowable Length of Cables .................................................................. 17

[3] Switch Settings and Address Settings .................................................................................... 19

[4] Sample System Connection ................................................................................................... 25

[5] An Example of a System to which an MA Remote Controller is connected ........................... 26

[6] Restrictions on Pipe Length.................................................................................................... 34

III Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit ................................................................. 39

[2] Control Box of the Outdoor Unit.............................................................................................. 41

[3] Outdoor Unit Circuit Board...................................................................................................... 42

IV Indoor Unit Components

[1] External Dimensions............................................................................................................... 49

[2] Indoor Unit Components and Internal Structure ..................................................................... 55

[3] Control Box of the Indoor Unit ................................................................................................ 57

[4] Indoor Unit Circuit Board ........................................................................................................ 58

[5] Fan.......................................................................................................................................... 59

V Remote Controller

[1] Functions and Specifications of MA Remote Controller ......................................................... 63

[2] Using the built-in Temperature Sensor on the Remote Controller.......................................... 63

VI Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit ........................................................................ 67

[2] Electrical Wiring Diagram of the Indoor Unit........................................................................... 68

[3] Electrical Wiring Diagram of Transmission Booster................................................................ 72

VII Refrigerant Circuit

[1] Refrigerant Circuit Diagram .................................................................................................... 75

[2] Principal Parts and Functions ................................................................................................. 78

VIII Control

[1] Functions and Factory Settings of the Dipswitches ................................................................ 85

[2] Controlling the Outdoor Unit ................................................................................................... 92

[3] Operation Flow Chart............................................................................................................ 102

IX Test Run Mode

[1] Items to be checked before a Test Run................................................................................ 109

[2] Test Run Method .................................................................................................................. 110

[3] Operating Characteristic and Refrigerant Amount................................................................ 111

[4] Adjusting the Refrigerant Amount......................................................................................... 111

[5] Refrigerant Amount Adjust Mode.......................................................................................... 114

[6] The following symptoms are normal. .................................................................................... 116

[7] Standard Operation Data (Reference Data) ......................................................................... 117

X Troubleshooting

[1] Error Code Lists.................................................................................................................... 129

[2] Responding to Error Display on the Remote Controller........................................................ 132

[3] Investigation of Transmission Wave Shape/Noise ............................................................... 186

[4] Troubleshooting Principal Parts............................................................................................ 189

[5] Refrigerant Leak ................................................................................................................... 208

[6] Compressor Replacement Instructions................................................................................. 210

[7] Troubleshooting Using the Outdoor Unit LED Error Display................................................. 212

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CONTENTS

XI LED Monitor Display on the Outdoor Unit Board

[1] How to Read the LED on the Service Monitor ...................................................................... 215

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I Read Before Servicing

[1] Read Before Servicing ....................................................................................................... 3

[2] Necessary Tools and Materials.......................................................................................... 4

[3] Piping Materials .................................................................................................................6

[4] Storage of Piping ............................................................................................................... 8

[5] Pipe Processing................................................................................................................. 8

[6] Brazing............................................................................................................................... 9

[7] Air Tightness Test............................................................................................................ 10

[8] Vacuum Drying (Evacuation) ........................................................................................... 11

[9] Refrigerant Charging........................................................................................................ 12

[10] Remedies to be taken in case of a Refrigerant Leak ....................................................... 12

[11] Characteristics of the Conventional and the New Refrigerants ....................................... 13

[12] Notes on Refrigerating Machine Oil ................................................................................. 14

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[ I Read Before Servicing ]

CAUTION

I Read Before Servicing

[1] Read Before Servicing

1. Check the type of refrigerant used in the system to be serviced. Refrigerant Type

PFAV series: R410A

2. Check the symptoms exhibited by the unit to be serviced.

Refer to this service handbook for symptoms relating to the refrigerant cycle.

3. Thoroughly read the safety precautions at the beginning of this manual.

4. Preparing necessary tools: Prepare a set of tools to be used exclusively with each type of refrigerant.

Refer to "Necessary Tools and Materials" for information on the use of tools.(page 4)

5. Verification of the connecting pipes: Verify the type of refrigerant used for the unit to be moved or replaced.

Use refrigerant pipes made of phosphorus deoxidized copper. Keep the inner and outer surfaces of the pipes clean and free

of such contaminants as sulfur, oxides, dust, dirt, shaving particles, oil, and water.

These types of contaminants inside the refrigerant pipes may cause the refrigerant oil to deteriorate.

6. If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame, a poisonous gas hydrofluoric acid may form. Keep workplace well ventilated.

Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit. The use of refrigerant that contains chloride, such as R22, will cause the refrigerating machine oil to deteriorate.

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[ I Read Before Servicing ]

[2] Necessary Tools and Materials

Prepare the following tools and materials necessary for installing and servicing the unit.

Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C)

1. To be used exclusively with R410A (not to be used if used with R22 or R407C)

Tools/Materials Use Notes

Gauge Manifold Evacuation and refrigerant charging Higher than 5.09MPa[738psi] on the

high-pressure side

Charging Hose Evacuation and refrigerant charging The hose diameter is larger than the

conventional model.

Refrigerant Recovery Cylinder Refrigerant recovery

Refrigerant Cylinder Refrigerant charging The refrigerant type is indicated. The

cylinder is pink.

Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger

than that of the current port.

Flare Nut Connection of the unit with the pipes Use Type-2 Flare nuts.

2. Tools and materials that may be used with R410A with some restrictions

Tools/Materials Use Notes

Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant

may be used.

Vacuum Pump Vacuum drying May be used if a check valve adapter

is attached.

Flare Tool Flare processing Flare processing dimensions for the

piping in the system using the new refrigerant differ from those of R22. Refer to I [3] Piping Materials.

Refrigerant Recovery Equipment Refrigerant recovery May be used if compatible with

R410A.

3. Tools and materials that are used with R22 or R407C that may also be used with R410A

Tools/Materials Use Notes

Vacuum Pump with a Check Valve Vacuum drying

Bender Bending pipes

Torque Wrench Tightening flare nuts Only the flare processing dimensions

for pipes that have a diameter of ø12.70 (1/2") and ø15.88 (5/8") have been changed.

Pipe Cutter Cutting pipes

Welder and Nitrogen Cylinder Welding pipes

Refrigerant Charging Meter Refrigerant charging

Vacuum Gauge Vacuum level check

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[ I Read Before Servicing ]

4. Tools and materials that must not be used with R410A

Tools/Materials Use Notes

Charging Cylinder Refrigerant charging Prohibited to use

Tools for R410A must be handled with special care to keep moisture and dust from infiltrating the cycle.

Tools recommended for replacing parts for changing the indoor unit static air pressure

When replacing a motor or pulley, work can be performed easier by using tools of dimensions close to the following specifications.

Extension bar

Ratchet handle/9.5mm [3/8"]

10.5

27.5

190

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[ I Read Before Servicing ]

[3] Piping Materials

Do not use the existing piping!

1. Copper pipe materials

O-material (Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands.

1/2H-material (Drawn) Hard copper pipes (straight pipes). They are stronger than the O-material (Annealed)

at the same radial thickness.

The distinction between O-materials (Annealed) and 1/2H-materials (Drawn) is made based on the strength of the pipes them-

selves.

O-materials (Annealed) can easily be bent with hands. 1/2H-materials (Drawn) are considerably stronger than O-material (Annealed) at the same thickness.

2. Types of copper pipes

Maximum working pressure Refrigerant type

3.45 MPa [500psi] R22, R407C etc.

4.30 MPa [624psi] R410A etc.

3. Piping materials/Radial thickness

Use refrigerant pipes made of phosphorus deoxidized copper. The operation pressure of the units that use R410A is higher than that of the units that use R22. Use pipes that have at least the radial thickness specified in the chart below. (Pipes with a radial thickness of 0.7 mm or less may not be used.)

Pipe size (mm[in]) Radial thickness (mm) Type

ø6.35 [1/4"] 0.8t

ø9.52 [3/8"] 0.8t

ø12.7 [1/2"] 0.8t

ø15.88 [5/8"] 1.0t

ø19.05 [3/4"] 1.0t

ø22.2 [7/8"] 1.0t

ø25.4 [1"] 1.0t

ø28.58 [1-1/8"] 1.0t

ø31.75 [1-1/4"] 1.1t

ø34.93 [1-3/8"] 1.1t

ø41.28 [1-5/8"] 1.2t

The pipes in the system that uses the refrigerant currently on the market are made with O-material (Annealed), even if the

pipe diameter is less than ø19.05 (3/4"). For a system that uses R410A, use pipes that are made with 1/2H-material (Drawn) unless the pipe diameter is at least ø19.05 (3/4") and the radial thickness is at least 1.2t.

The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes

that meet the local standards.

O-material (Annealed)

1/2H-material,

H-material (Drawn)

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[ I Read Before Servicing ]

Dimension A

Dimension B

4. Thickness and refrigerant type indicated on the piping materials

Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant.

5. Flare processing (O-material (Annealed) and OL-material only)

The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.

Flare processing dimensions (mm[in])

A dimension (mm)

Pipe size (mm[in])

R410A R22, R407C

ø6.35 [1/4"] 9.1 9.0

ø9.52 [3/8"] 13.2 13.0

ø12.7 [1/2"] 16.6 16.2

ø15.88 [5/8"] 19.7 19.4

ø19.05 [3/4"] 24.0 23.3

If a clutch-type flare tool is used to flare the pipes in the system using R410A, the length of the pipes must be between 1.0 and 1.5 mm. For margin adjustment, a copper pipe gauge is necessary.

6. Flare nut

The flare nut type has been changed to increase the strength. The size of some of the flare nuts have also been changed.

Flare nut dimensions (mm[in])

B dimension (mm)

Pipe size (mm[in])

R410A R22, R407C

ø6.35 [1/4"] 17.0 17.0

ø9.52 [3/8"] 22.0 22.0

ø12.7 [1/2"] 26.0 24.0

ø15.88 [5/8"] 29.0 27.0

ø19.05 [3/4"] 36.0 36.0

The figures in the radial thickness column are based on the Japanese standards and provided only as a reference. Use pipes that meet the local standards.

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[ I Read Before Servicing ]

[4] Storage of Piping

1. Storage location

Store the pipes to be used indoors. (Warehouse at site or owner's warehouse) If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe.

2. Sealing the pipe ends

Both ends of the pipes should be sealed until just before brazing. Keep elbow pipes and T-joints in plastic bags.

The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil (such as Suniso) and, if not handled with care, could easily introduce moisture into the system. Keep moisture out of the pipes, for it will cause the oil to deteriorate and cause a compressor failure.

[5] Pipe Processing

Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flanges.

Use a minimum amount of oil. Use only ester oil, ether oil, and alkylbenzene.

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[ I Read Before Servicing ]

[6] Brazing

No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide scale, water, and dust) out of the refrigerant system.

Example: Inside the brazed connection

Use of oxidized solder for brazing Use of non-oxidized solder for brazing

1. Items to be strictly observed

Do not conduct refrigerant piping work outdoors if raining. Use non-oxidized solder. Use a brazing material (BCuP-3) that requires no flux when brazing between copper pipes or between a copper pipe and

copper coupling.

If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends.

2. Reasons

The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if

water infiltrates into the system.

Flux generally contains chloride. Residual flux in the refrigerant circuit will cause sludge to form.

3. Notes

Do not use commercially available antioxidants because they may cause the pipes to corrode or refrigerating machine oil to deteriorate.

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[ I Read Before Servicing ]

[7] Air Tightness Test

No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak.

Halide torch R22 leakage detector

1. Items to be strictly observed

Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tight-

ness, taking temperature variations into account.

Refrigerant R410A must be charged in its liquid state (vs. gaseous state).

2. Reasons

Oxygen, if used for an air tightness test, poses a risk of explosion. (Only use nitrogen to check air tightness.) Refrigerant R410A must be charged in its liquid state. If gaseous refrigerant in the cylinder is drawn out first, the composition

of the remaining refrigerant in the cylinder will change and become unsuitable for use.

3. Notes

Procure a leak detector that is specifically designed to detect an HFC leak. A leak detector for R22 will not detect an HFC(R410A) leak.

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[ I Read Before Servicing ]

[8] Vacuum Drying (Evacuation)

(Photo1) 15010H (Photo2) 14010

Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge

1. Vacuum pump with a reverse-flow check valve (Photo1)

To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum pump with a reverse-flow check valve. A reverse-flow check valve may also be added to the vacuum pump currently in use.

2. Standard of vacuum degree (Photo 2)

Use a vacuum pump that attains 0.5Torr(65Pa) or lower degree of vacuum after 5 minutes of operation, and connect it directly to the vacuum gauge. Use a pump well-maintained with an appropriate lubricant. A poorly maintained vacuum pump may not be able to attain the desired degree of vacuum.

3. Required precision of vacuum gauge

Use a vacuum gauge that registers a vacuum degree of 5Torr(650Pa) and measures at intervals of 1Torr(130Pa). (A recommended vacuum gauge is shown in Photo2.) Do not use a commonly used gauge manifold because it cannot register a vacuum degree of 5Torr(650Pa).

4. Evacuation time

After the degree of vacuum has reached 5Torr(650Pa), evacuate for an additional 1 hour. (A thorough vacuum drying re-

moves moisture in the pipes.)

Verify that the vacuum degree has not risen by more than 1Torr(130Pa) 1hour after evacuation. A rise by less than

1Torr(130Pa) is acceptable.

If the vacuum is lost by more than 1Torr(130Pa), conduct evacuation, following the instructions in section 6. Special vacuum

drying.

5. Procedures for stopping vacuum pump

To prevent the reverse flow of vacuum pump oil, open the relief valve on the vacuum pump side, or draw in air by loosening the charge hose, and then stop the operation. The same procedures should be followed when stopping a vacuum pump with a reverse-flow check valve.

6. Special vacuum drying

When 5Torr(650Pa) or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has pen-

etrated the system or that there is a leak.

If water infiltrates the system, break the vacuum with nitrogen. Pressurize the system with nitrogen gas to

0.5kgf/cm

G(0.05MPa) and evacuate again. Repeat this cycle of pressurizing and evacuation either until the degree of vac-

uum below 5Torr(650Pa) is attained or until the pressure stops rising.

Only use nitrogen gas for vacuum breaking. (The use of oxygen may result in an explosion.)

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[ I Read Before Servicing ]

[9] Refrigerant Charging

Cylinder with a siphon

Cylinder without a siphon

Cylin-

der

Cylinder color R410A is pink. Refrigerant charging in the liquid state

Valve Valve

liquid

1. Reasons

R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52°C[-62°F], R125=-49°C[-52°F]) and can almost be handled the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use.

2. Notes

When using a cylinder with a siphon, refrigerant is charged in the liquid state without the need for turning it upside down. Check the type of the cylinder on the label before use.

[10] Remedies to be taken in case of a Refrigerant Leak

If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced. (Charge refrigerant in the liquid state.) Refer to "X [5] Refrigerant Leak."(page 208)

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[ I Read Before Servicing ]

[11] Characteristics of the Conventional and the New Refrigerants

1. Chemical property

As with R22, the new refrigerant (R410A) is low in toxicity and chemically stable nonflammable refrigerant. However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia. If exposed to an open flame, refrigerant will generate poisonous gases. Do not perform installation or service work in a confined area.

New Refrigerant (HFC type) Conventional Refriger-

ant (HCFC type)

R410A R407C R22

R32/R125 R32/R125/R134a R22

Composition (wt%) (50/50) (23/25/52) (100)

Type of Refrigerant Pseudo-azeotropic

Refrigerant

Non-azeotropic

Refrigerant

Single Refrigerant

Chloride Not included Not included Included

Safety Class A1/A1 A1/A1 A1

Molecular Weight 72.6 86.2 86.5

Boiling Point (°C/°F) -51.4/-60.5 -43.6/-46.4 -40.8/-41.4

Steam Pressure

1.557/226 0.9177/133 0.94/136

(25°C,MPa/77°F,psi) (gauge)

Saturated Steam Density (25°C,kg/m

/77°F,psi)

64.0 42.5 44.4

Flammability Nonflammable Nonflammable Nonflammable

Ozone Depletion Coefficient (ODP)

Global Warming Coefficient (GWP)

Refrigerant Charging Method Refrigerant charging in

Replenishment of Refrigerant after a Refrigerant

0 0 0.055

1730 1530 1700

the liquid state

Refrigerant charging in

the liquid state

Refrigerant charging in

the gaseous state

Available Available Available

Leak

*1 When CFC11 is used as a reference *2 When CO

is used as a reference

2. Refrigerant composition

R410A is a pseudo-azeotropic HFC blend and can almost be handled the same way as a single refrigerant, such as R22. To be safe, however, draw out the refrigerant from the cylinder in the liquid phase. If the refrigerant in the gaseous phase is drawn out, the composition of the remaining refrigerant will change and become unsuitable for use. If the refrigerant leaks out, it may be replenished. The entire refrigerant does not need to be replaced.

3. Pressure characteristics

The pressure in the system using R410A is 1.6 times as great as that in the system using R22.

Pressure (gauge)

Temperature (°C/°F)

R410A R407C R22

MPa/psi MPa/psi MPa/psi

-20/-4 0.30/44 0.18/26 0.14/20

0/32 0.70/102 0.47/68 0.40/58

20/68 1.34/194 0.94/136 0.81/117

40/104 2.31/335 1.44/209 1.44/209

60/140 3.73/541 2.44/354 2.33/338

65/149 4.17/605 2.75/399 2.60/377

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[ I Read Before Servicing ]

[12] Notes on Refrigerating Machine Oil

1. Refrigerating machine oil in the HFC refrigerant system

HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system. Note that the ester oil used in the system has properties that are different from commercially available ester oil.

Refrigerant Refrigerating machine oil

R22 Mineral oil

R407C Ester oil

R410A Ester oil

2. Effects of contaminants

Refrigerating machine oil used in the HFC system must be handled with special care to keep contaminants out. The table below shows the effect of contaminants in the refrigerating machine oil on the refrigeration cycle.

3. The effects of contaminants in the refrigerating machine oil on the refrigeration cycle.

Cause Symptoms Effects on the refrigerant cycle

Water infiltration Frozen expansion valve

and capillary tubes

Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Motor insulation failure Burnt motor Coppering of the orbiting scroll Lock Burn-in on the orbiting scroll

Hydrolysis

Sludge formation and adhesion Acid generation Oxidization Oil degradation

Air infiltration Oxidization

Adhesion to expansion valve and capillary tubes

Clogged expansion valve, capillary tubes, and drier Poor cooling performance

Infiltration of contaminants

Dust, dirt

Infiltration of contaminants into the compressor

Compressor overheat

Burn-in on the orbiting scroll

Sludge formation and adhesion Clogged expansion valve and capillary tubes

Mineral oil etc.

Poor cooling performance Compressor overheat

Oil degradation Burn-in on the orbiting scroll

*1. Contaminants is defined as moisture, air, processing oil, dust/dirt, wrong types of refrigerant, and refrigerating machine oil.

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II Restrictions

[1] System configuration ....................................................................................................... 17

[2] Types and Maximum allowable Length of Cables ........................................................... 17

[3] Switch Settings and Address Settings ............................................................................. 19

[4] Sample System Connection............................................................................................. 25

[5] An Example of a System to which an MA Remote Controller is connected..................... 26

[6] Restrictions on Pipe Length ............................................................................................. 34

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[ II Restrictions ]

TB3TB7TB3TB

Outdoor unit

Indoor unit

Remote Controller

2-core shielded cable

Outdoor unit

multiple-core cable

TB3: Terminal block for indoor-outdoor transmission line TB7: Terminal block for centralized control

2-core shielded cable

Indoor unit

Remote Controller

II Restrictions

[1] System configuration

1. Unit combination

The table below shows a list of outdoor units that are compatible with the indoor unit described in this manual.

(1) Standard type combination

Indoor unit model name Outdoor unit model name

PFAV-P250VM-E PUHY-P250YHM-A

PFAV-P500VM-E PUHY-P500YSHM-A

PFAV-P750VM-E PUHY-P750YSHM-A

(2) Fresh Air Intake type combination

Indoor unit model name Outdoor unit model name

PFAV-P300VM-E-F PUHY-P250YHM-A

PFAV-P600VM-E-F PUHY-P500YSHM-A

PFAV-P900VM-E-F PUHY-P750YSHM-A

1) Do not connect the PFAV series indoor units and other types of indoor units together to an outdoor unit.

[2] Types and Maximum allowable Length of Cables

1. Wiring work

(1) Notes

1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this manual.

2) Install external transmission cables at least 5cm [1-31/32"] away from the power supply cable to avoid noise interference. (Do not put the control cable and power supply cable in the same conduit tube.)

3) Provide grounding for the outdoor unit as required.

4) Run the cable from the electric box of the indoor or outdoor unit in such way that the box is accessible for servicing.

5) Do not connect power supply wiring to the terminal block for transmission line. Doing so will damage the electronic components on the terminal block.

6) Use 2-core shielded cables as transmission cables. Use a separate 2-core control cable for each refrigerant system. Do not use a single multiple-core cable to connect indoor

units that belong to different refrigerant systems. The use of a multiple-core cable may result in signal transmission errors and malfunctions.

(2) Control wiring

Different types of control wiring are used for different systems. Refer to section "[5] An Example of a System to which an MA Remote Controller is connected" before performing wiring work.

Types and maximum allowable length of cables

Control lines are categorized into 2 types: transmission line and remote controller line. Use the appropriate type of cables and observe the maximum allowable length specified for a given system. If a given system

has a long transmission line or if a noise source is located near the unit, place the unit away from the noise source to reduce noise interference.

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[ II Restrictions ]

1) M-NET transmission line

Facility type

Type Shielded cable CVVS, CPEVS, MVVS

Cable type

Number of cores

Cable size Larger than 1.25mm2 [AWG16]

Maximum transmission line distance between the outdoor unit and the farthest indoor unit

Maximum transmission line distance for centralized control and Indoor/ outdoor transmission line (Maximum line distance via outdoor unit)

All facility types

2-core cable

200 m [656ft] max.

500 m [1640ft] max. *The maximum overall line length from the power supply unit on the transmission lines for centralized control to each outdoor unit or to the system controller is 200m [656ft] max.

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[ II Restrictions ]

2) Remote controller wiring

MA remote controller

Type CVV

Number of cores

Cable type

Cable size

2-core cable

0.3 to 1.25mm

[AWG22 to 16] *2 (0.75 to 1.25mm2 ) [AWG18 to 16] *3

Maximum overall line length

200 m [656ft] max.

*1 MA remote controller refers to MA remote controller (PAR-21MAA), MA simple remote controller, and wireless re-

mote controller. *2 The use of cables that are smaller than 0.75mm2 (AWG18) is recommended for easy handling. *3 When connected to the terminal block on the Simple remote controller, use cables that meet the cable size specifi-

cations shown in the parenthesis.

[3] Switch Settings and Address Settings

1. Switch setting

Refer to section "[5] An Example of a System to which an MA Remote Controller is connected " before performing wiring work. Set the switches while the power is turned off. If the switch settings are changed while the unit is being powered, those changes will not take effect, and the unit will not function properly.

Units on which to set the switches Symbol Units to which the power must be shut off

Indoor unit Main/sub unit IC Outdoor units

MA remote controller Main/sub remote

MA Indoor units

and Indoor units

controller

Outdoor unit

OC,OS Outdoor units

*1. The outdoor units in the same refrigerant circuit are automatically designated as OC and OS in the order of capacity

from large to small (if two or more units have the same capacity, in the order of address from small to large).

*2. Turn off the power to all the outdoor units in the same refrigerant circuit.

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[ II Restrictions ]

2. M-NET Address settings (1) Address settings table

The need for address settings and the range of address setting depend on the configuration of the system.

Unit or controller Address setting

Setting method Facto-

range

Indoor unit Main/sub unit 01 to 50

Assign the smallest address to the main indoor unit in the group, and assign sequential address numbers to the rest of the indoor units in the same group.

MA remote controller No address settings required. (The main/sub setting must be made if 2

remote controllers are connected to the system.)

Outdoor unit 51 to 100

Assign an address that equals the address of the indoor unit in the same refrigerant circuit plus 50. The

System controller Group remote

controller

System remote controller

ON/OFF remote controller

Schedule timer (compatible

outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

201 to 250 Assign an address that equals the sum of the smallest

group number of the group to be controlled and 200.

Assign an arbitrary but unique address within the range listed on the left to each unit.

Assign an address that equals the sum of the smallest group number of the group to be controlled and 200.

Assign an arbitrary but unique address within the range listed on the left to each unit.

with M-NET)

Central controller G(B)-50A

000, 201 to 250

Assign an arbitrary but unique address within the range listed on the left to each unit. The address must be set to "000" to control the K-control unit.

LM adapter 201 to 250 Assign an arbitrary but unique address within the

range listed on the left to each unit.

ry set-

ting

Main

201

202

000

247

*1. To set the outdoor unit address to "100," set the rotary switches to "50." *2. Some indoor units have 2 controller boards that require address settings.

No. 2 controller board address must be equal to the sum of the No. 1 controller board address and 1.

*3. The outdoor units in the same refrigerant circuit are automatically designated as OC and OS in the order of capacity

from large to small (if two or more units have the same capacity, in the order of address from small to large).

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[ II Restrictions ]

(2) Power supply switch connector connection on the outdoor unit

(Factory setting: The male power supply switch connector is connected to CN41.)

System configuration

Connection to the system controller

Power supply unit for transmission lines

Group operation of units in a system with multiple

Power supply switch connector connection

outdoor units

System with one outdoor unit

System with multiple outdoor units

_ _ _ Leave CN41 as it is

(Factory setting)

Not connected _ Not grouped

Grouped Disconnect the male connector from the fe-

With connection to the indoor unit system

With connection to the centralized control system

Not required Grouped/not

grouped

Not required (Powered from the

Grouped/not grouped

outdoor unit)

Required *

Grouped/not grouped

male power supply switch connector (CN41) and connect it to the female power supply switch connector (CN40) on only one of the outdoor units.

*Connect the S (shielded) terminal on the ter-

minal block (TB7) on the outdoor unit whose CN41 was replaced with CN40 to the ground terminal ( ) on the electric box.

Leave CN41 as it is (Factory setting)

*1 The need for a power supply unit for transmission lines depends on the system configuration. *2 The replacement of the power jumper connector from CN41 to CN40 must be performed on only one outdoor unit in the

system.

(3) Settings for the centralized control switch for the outdoor unit (Factory setting: SW2-1 are set to OFF.)

System configuration Centralized control switch settings *

Connection to the system controller Not connected Leave it to OFF. (Factory setting)

Connection to the system controller Connected *

*1 Set SW2-1 on all outdoor units in the same refrigerant circuit to the same setting. *2 When only the LM adapter is connected, leave SW2-1 to OFF (as it is).

(4) Selecting the position of temperature detection for the indoor unit (Factory setting: SW1-1 set to "OFF".)

1) To use the built-in sensor on the remote controller, set the SW1-1 to ON. Some models of remote controllers are not equipped with a built-in temperature sensor.

Use the built-in temperature sensor on the indoor unit instead.

When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.

2) To activate the temperature sensor supplied with the Fresh Air Intake model unit, set the SW1-1 to "OFF" and SW3-8 to "ON." Install the sensor where the room temperature can be detected.

(5) Various start-stop controls (Indoor unit settings)

Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10.

Function

Power ON/OFF by the plug

Automatic restoration after power failure

Operation of the indoor unit when the operation is resumed after the unit was

stopped

Indoor unit will go into operation regardless of its operation status before power off (power failure). (In approx. 5 minutes)

Indoor unit will go into operation if it was in operation when the power was turned off (or cut off due to power failure). (In approx. 5 minutes)

Indoor unit will remain stopped regardless of its operation status before power

Setting (SW1)

910

OFF ON

ON OFF

OFF OFF

off (power failure).

*1. Do not cut off power to the outdoor unit. Cutting off the power supply to the outdoor unit will cut off the power supply to the

crankcase heater and may cause the compressor to malfunction when the unit is put back into operation.

*2. Requires that the dipswitch settings for all the units in the group be made.

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[ II Restrictions ]

CAUTION

(6) Miscellaneous settings

Cooling-only setting for the indoor unit: Cooling only model (Factory setting: SW3-1 "OFF.") When using indoor unit as a cooling-only unit, set SW3-1 to ON.

(7) Various types of control using input-output signal connector on the outdoor unit (various connection options)

Type Usage Function

Input Prohibiting cooling/heating operation (thermo OFF) by an external

DEMAND (level) CN3D

input to the outdoor unit.

*It can be used as the DEMAND control device for each system.

Performs a low level noise operation of the outdoor unit by an external input to the outdoor unit.

Low-noise mode

*3*4

(level)

Terminal

to be

used

Option

Adapter for external input (PACSC36NA-E)

* It can be used as the silent operation device for each refrigerant system.

Forces the outdoor unit to perform a fan operation by receiving signals from the snow sensor.

Snow sensor signal input (level)

CN3S

Cooling/heating operation can be changed by an external input. Auto-changeover CN3N

Out-

How to extract signals from the outdoor unit

put

*It can be used as an operation status display device. *It can be used for an interlock operation with external devices.

Operation status of the compressor

Error status

CN51 Adapter for

external output (PACSC37SA-E)

*1. For detailed drawing, refer to "Example of wiring connection".

*2. For details, refer to (1) through (4) on the next page.

*3. Low-noise mode is valid when Dip SW4-4 on the outdoor unit is set to OFF. When DIP SW4-4 is set to ON, 4 levels of

on-DEMAND are possible, using different configurations of low-noise mode input and DEMAND input settings.When 2 or more outdoor units exist in one refrigerant circuit system, 8 levels of on-DEMAND are possible.

*4. By setting Dip SW5-5, the Low-noise mode can be switched between the Capacity priority mode and the Low-noise pri-

ority mode. When SW5-5 is set to ON: The Low-noise mode always remains effective. When SW5-5 is set to OFF: The Low-noise mode is cancelled when certain outside temperature or pressure criteria are met, and the unit goes into normal operation (capacity priority mode).

Low-noise mode is effective Capacity priority mode becomes effective

Cooling Heating Cooling Heating

TH7 < 30°C [86°F] and 63HS1 < 32kg/cm

TH7 > 3°C [37°F] and 63LS > 4.6kg/cm

TH7 > 35°C [95°F]

or 63HS1 > 35kg/cm

TH7 < 0°C [32°F] or 63LS < 3.9kg/cm

*5. When multiple outdoor units exist in one refrigerant circuit system, settings on every outdoor unit (signal input) are re-

quired.

*6. When multiple outdoor units exist in one refrigerant circuit, take out signals from the outdoor unit (OC).

1) Wiring should be covered by insulation tube with supplementary insulation.

2) Use relays or switches with IEC or equivalent standard.

3) The electric strength between accessible parts and control circuit should have 2750V or more.

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[ II Restrictions ]

(1) CN51

(2) CN3S

CN51

ecruos rewop pmaL

Distant control board

Relay circuit Adapter

Outdoor unit control board

Preparations

in the field

Maximum cable length is 10m

5 4 3

L1 : Outdoor unit error display lamp L2 : Compressor operation lamp (compressor running state) X, Y : Relay (coil =<0.9W : DC12V)

1. Optional part : PAC-SC37SA-E or field supply.

2. Optional part : PAC-SC36NA-E or field supply.

X : Relay

Snow sensor : The outdoor fan runs when X is closed

in stop mode or thermostat mode.

CN3S

Preparations

in the field

Maximum cable length is 10m

Adapter

Outdoor unit control board

Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC

Relay circuit

(3) CN3N

2. Optional part : PAC-SC36NA-E or field supply.

Preparations

in the field

OFF

CoolingONHeating

Normal

OFF

Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC

X : Cooling / Heating Y : Validity / Invalidity of X X,Y : Relay

CN3N

Relay circuit

Adapter

Outdoor unit control board

Maximum cable length is 10m

1 2

Example of wiring connection

(4) CN3D

Relay circuit

Adapter

Preparations

in the field

Maximum cable

length is 10m X : Low-noise mode Y : Compressor ON/OFF X,Y : Relay

2. Optional part : PAC-SC36NA-E or field supply.

Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum appicable load =< 1mA at DC

1 2

Outdoor unit control board

CN3D

Relay circuit

Preparations

in the field

X : Low-noise mode

X : Relay

2. Optional part : PAC-SC36NA-E or field supply.

Low-noise mode : The noise level is reduced by controlling the maximum

Outdoor unit

1 2

control board

CN3D

Adapter

Maximum cable length is 10m

Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum applicable load =< 1mA at DC

fan frequency and maximum compressor frequency.

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[ II Restrictions ]

If the step listed as the wrong example above is taken, thermo may go off. The percentage of the demand listed in the table above is an approximate value based on the compressor volume and does not necessarily correspond with the capacity. When this function is enabled, the night mode cannot be enabled.

(Wrong)

(Correct)

100%

75%

50%

Demand control

steps

Note the following steps to be taken when using the STEP DEMAND

(Example) When switching from 100% to 50%

1) SW4-4: OFF (Compressor ON/OFF, Low-noise mode)

CN3D 1-3P Compressor ON/OFF

Open Compressor ON

Short-circuit Compressor OFF

CN3D 1-2P Low-noise mode

Open OFF

Short-circuit ON

*1. When SW4-4 on the outdoor unit in one refrigerant circuit system is set to ON, this function cannot be used. *2. This function and the 4 levels or 8 levels on-DEMAND function can be used together. Input the order to CN3D 1-2P on

the outdoor unit whose SW4-4 is set to OFF.

2) When SW4-4 on one outdoor unit in one refrigerant circuit system is set to ON (4 levels of on-DEMAND)

(*3)

CN3D 1-2P

CN3D 1-3P Open Short-circuit

Open 100% (No DEMAND) 75%

Short-circuit 0% (Compressor OFF) 50%

*3. Input the order to CN3D on the outdoor unit whose SW4-4 is set to ON.

3) When SW4-4 on the two outdoor units in one refrigerant circuit system is set to ON (8 levels of on-DEMAND)

8 levels of on-DEMAND No.2 CN3D

1-2P Open Short-circuit

No.1 CN3D 1-2P 1-3P Open Short-circuit Open Short-circuit

Open Open 100% 50% 88% 75%

Short-circuit 50% 0% 38% 25%

Short-circuit Open 88% 38% 75% 63%

Short-circuit 75% 25% 63% 50%

*4. Input the order to CN3D on the outdoor unit whose SW4-4 is set to ON. *5. CN3D of No. 1, 2, 3 can be selected arbitrary with the outdoor unit whose SW4-4 is set to ON.

(*4, *5)

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[ II Restrictions ]

[4] Sample System Connection

Examples of typical system connection are shown. Refer to the Installation Manual that came with each device or controller for details.

(1) An example of a system to which an MA remote controller is connected

System

configuration

System with one out-

1. door unit

Grouping of units in a

system with multiple

outdoor units

System with one out-

3. door unit

Connection to the system controller

With connection to transmission line

for centralized control

Address start up for in-

door and outdoor units

Manual

address setup

Manual

address setup

Manual

address setup

Notes

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[ II Restrictions ]

TB5

M1 M2

MA (main body)

TB5

M1 M2

S 12

MA (sold separately)

MA (main body)

Main

Sub

Group

TB3

TB7

M1 M2

M1 M 2

TB3

TB7

M1 M2

[5] An Example of a System to which an MA Remote Controller is connected

1. Single-outdoor-unit system (manual IC/OC address setup) (1) Sample control cable wiring configuration

(2) Cautions

1) Do not connect terminal blocks TB5 on the indoor units that are connected to an outdoor unit in a different refrigerant circuit with each other.

2) No more than two MA remote controllers can be connected to a group of indoor units. To connect three or more indoor units to the system, use two or less MA remote controllers.

(3) Maximum allowable length

1) Indoor-outdoor transmission cable Maximum cable distance (1.25 mm

[AWG16] min.)

L1≤200m [656ft]

2) Transmission cable for the centralized control system No connection is required.

3) MA remote controller wiring

Total cable length (0.3 to 1.25mm

[AWG22 to 16])

m1≤200m [656ft] m2+m3≤200m [656ft]

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[ II Restrictions ]

(4) Wiring method

1) Indoor-outdoor transmission cable Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission cable (TB3) on the outdoor unit (OC) and of the terminal block for indoor-outdoor transmission cable (TB5) on the indoor unit (IC). (Non-polarized two-wire)

Only use shielded cables.

Shielded cable connection

Connect the ground terminal ( ) of OC to the S terminal of TB5 on IC with the shielded cable.

2) Transmission cable for the centralized control system No connection is required.

(5) Address setting method

Address

Unit or controller

setting

range

1 Indoor unit Main con-

IC 01 to 50 Assign the lowest address

troller

Sub controller

3) MA remote controller wiring Required when operation with two remote controllers or

group operation is performed.

When two remote controllers are connected to the system

When two remote controllers are connected to the system, connect terminals 1 and 2 on the terminal block for MA remote controller cable (TB15) on the indoor unit (IC) to the terminal block on the MA remote controller (sold separately). (Non-polarized two-wire)

Set the Main/Sub setting of the MA remote controller

(sold separately) connected to the indoor unit to Sub. Refer to the Instruction Manual for the MA remote controller for the setting method. The main MA remote controller is built in on the indoor unit.

4) Switch setting

Address setting is required as follows.

Setting method Notes

To perform a group opto the main indoor unit in the group.

Assign sequential numbers starting with the address of the main unit in the same group. [main unit +1, +2, +3…]

eration of indoor units

that feature different

functions, designate

the indoor unit in the

group with the greatest

number of functions as

the main unit.

Factory

setting

2 MA remote

controller

Main remote con-

MA No settings

required

-Main

troller

Sub remote controller

MA Sub re-

mote controller

3 Outdoor unit OCOS51 to 100 Assign an address that

Settings to be made in the remote controller function selection mode

equals the address of the indoor unit in the same re-

To set the address to

"100," set the switch to

"50." frigerant circuit plus 50. Assign sequential addresses to the outdoor units in the same refrigerant circuit. The outdoor units are automatically designated as OC and OS. (Note)

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

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[ II Restrictions ]

MA(Main)

TB5-1

M1 M2

TB15

MA(Sub)

* Applicable to the P750 and P900-F models.

02*

TB3

M1 M2

TB7

M1 M2

TB3

TB7

M1 M2

2. Single-refrigerant-circuit system (1) Sample control cable wiring configuration

(2) Cautions

1) Assign sequential addresses to the indoor unit.

2) No more than two MA remote controllers can be connected to a group of indoor units. To connect three or more indoor units to the system, use two or less MA remote controllers.

(3) Maximum allowable length

1) Indoor-outdoor transmission cable Maximum cable distance (1.25 mm2 [AWG16] min.)

L1 +L2 ≤ 200m [656ft]

2) Transmission cable for the centralized control system No connection is required.

3) MA remote controller wiring Total cable length (0.3 to 1.25mm

[AWG22 to 16])

m1 +m2 ≤ 200m [656ft]

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[ II Restrictions ]

(4) Wiring method

1) Indoor-outdoor transmission cable Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission cable (TB3) on the outdoor units (OC and OS) (Note1) and of the terminal block for indoor-outdoor transmission cable (TB5) on the indoor unit (IC). (Non-polarized two-wire)

Only use shielded cables.

Shielded cable connection

Connect the ground terminal of OC to the S terminal of TB5 on IC with the shielded cable.

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

2) Transmission cable for the centralized control system No connection is required.

(5) Address setting method

Address

Unit or controller

setting

range

1 Indoor unit Main con-

IC 01 to 50 To be set to an arbitrary

troller

3) MA remote controller wiring Required when operation with two remote controllers or

group operation is performed.

When two remote controllers are connected to the system

Set the Main/Sub setting of the MA remote controller

(sold separately) connected to the indoor unit to Sub. The main MA remote controller is built in on the indoor unit.

4) Switch setting

Address setting is required as follows.

Setting method Notes

address within the range on the left.

Factory

setting

Sub controller*

Assign an address that equals the address of the main unit +1.

2 MA remote

controller

Main remote con-

MA No settings

required

-Main

troller

Sub remote controller

MA Sub re-

mote controller

3 Outdoor unit OCOS51 to 100 Assign an address that

Settings to be made in the remote controller function selection mode

equals the address of the indoor unit in the same re-

To set the address to "100," set the switch to

"50." frigerant circuit plus 50. Assign sequential addresses to the outdoor units in the same refrigerant circuit. The outdoor units are automatically designated as OC and OS. (Note)

∗Applicable to the P750 and P900-F models.

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

HWE09060 GB

29- 29 -

Page 39

[ II Restrictions ]

m2m3

M2M1M2

M1M2M1

M2SS12

Leave the power jumper

as it is on CN41.

Leave the power jumper

as it is on CN41.

MA (main body)

Sub

MA (main body)

Main

Group

TB3

TB7

TB15

TB5

TB3

TB7

TB15

TB5

3. Group operation of the indoor units connected to different outdoor units (1) Sample control cable wiring configuration

(2) Cautions

1) Assign sequential addresses to the indoor unit.

2) Do not connect the terminal blocks (TB5) of the indoor units that are connected to different outdoor units with each other.

3) No more than two MA remote controllers can be connected to a group of indoor units. To connect three or more indoor units to the system, use two or less MA remote controllers. When a relay connector for MA remote controller cable is removed from the indoor unit, the unit can be in the same state as when MA remote controller is removed from the unit.

(3) Maximum allowable length

1) Indoor-outdoor transmission cable Same as section [5] 1.

2) Transmission cable for the centralized control system Same as section [5] 1.

3) MA remote controller wiring

Total cable length (0.3 to 1.25mm

[AWG22 to 16])

m1+m2+m3 ≤ 200m [656ft]

- 30 -

GBHWE09060

Page 40

[ II Restrictions ]

(4) Wiring method

1) Indoor-outdoor transmission cable Daisy-chain terminals M1 and M2 of the terminal block

for indoor-outdoor transmission cable (TB7) on the outdoor unit (OC) and of the terminal block for indoor-outdoor transmission cable (TB5) on the indoor unit (IC). (Non-polarized two-wire)

Only use shielded cables.

Shielded cable connection

Same as section [5] 1.

2) Transmission cable for the centralized control system Same as section [5] 1.

3) MA remote controller wiring

To perform a group operation of the indoor units con-

nected to different outdoor units, set one of the MA remote controllers to Sub.

Same as section [5] 1.

(5) Address setting method

Address

Unit or controller

setting

range

1 Indoor unit Main con-

IC 01 to 50 Assign the lowest ad-

troller

Sub controller

When two remote controllers are connected to the system

Same as section [5] 1.

Group operation of indoor units

To perform a group operation of indoor units, connect the terminals 1 and 2 of the terminal block (TB15) on the indoor units with each other. (Non-polarized two-wire)

Set the Main/Sub setting of one of the indoor unit remote

controllers to Sub. Designate the indoor unit in the group with the greatest number of functions as the main unit.

4) Switch setting Address setting is required as follows.

Setting method Notes

To perform a group dress to the main indoor unit in the group.

Assign sequential numbers starting with the address of the main unit in the same group.[main unit +1, +2, +3…]

operation of indoor

units that feature dif-

ferent functions, des-

ignate the indoor unit

in the group with the

greatest number of

functions as the main

unit.

Factory

setting

2 MA remote

controller

Main remote con-

MA No settings

required

-Main

troller

Sub remote controller

MA Sub remote

controller

Settings to be made in the remote controller function selection mode

3 Outdoor unit OC

51 to 100 Assign an address that

equals the address of the indoor unit in the same re-

To set the address to

"100," set the switch

to "50." frigerant circuit plus 50. Assign sequential addresses to the outdoor units in the same refrigerant circuit.The outdoor units are automatically designated as OC and OS. (Note)

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

HWE09060 GB

31- 31 -

Page 41

[ II Restrictions ]

TB5 TB

TB5

Group

Note 1 When only the LM adapter is connected, leave DIP SW2-1 to OFF as it is. Note 2 LM adapter operates on a single-phase 200 VAC power supply.

TB3

TB7

TB3

TB7

ABS

L31

L32

Note 2 and 3

Note 1

Leave the power jumper as it is on CN41. SW2-1 OFF→ON

To be connected

Move the power jumper from CN41 to CN40. SW2-1 OFF→ON

MA (main body)

System controller

M1 M2 M1 M2M1 M2

4. An example of a system in which a system controller is connected to the transmission cable for the centralized control system and the power is supplied from the outdoor unit

(1) Sample control cable wiring configuration

(2) Cautions

1) No more than two MA remote controllers can be connected to a group of indoor units.

2) Do not connect the terminal blocks (TB5) of the indoor units that are connected to different outdoor units with each other.

3) The replacement of the power jumper connector from CN41 to CN40 must be performed on only one outdoor unit in the system.

4) Connect the S (shield) terminal of the terminal block for centralized control system connection (TB7) on the outdoor unit whose power jumper was moved from CN41 to CN40 to the ground terminal of the unit.

(3) Maximum allowable length

1) Indoor-outdoor transmission cable Same as section [5] 1.

2) Transmission cable for the centralized control system

Maximum cable distance (1.25 mm

[AWG16] min.)

L31 +L32 ≤ 500m [1640ft] (only L31, L32 ≤ 200m [656ft])

Maximum cable distance via outdoor unit (1.25 mm

[AWG16] min.) L32+L31+L1 ≤ 500m [1640ft] L32+L2 ≤ 500m [1640ft] L1+L2+L31 ≤ 500m [1640ft]

3) MA remote controller wiring Same as section [5] 1.

- 32 -

GBHWE09060

Page 42

[ II Restrictions ]

(4) Wiring method

1) Indoor-outdoor transmission cable Same as section [5] 2.

Shielded cable connection

Same as section [5] 1.

2) Transmission cable for the centralized control system Daisy-chain terminals M1 and M2 of the terminal block

for centralized control system connection (TB7) on OCs and terminals A and B of the system controller on OCs. (non-polarized two-wire) Move the power jumper on the control board from CN41 to CN40 on only one of the outdoor units. Set the centralized control switch (DIP SW2-1) of the control board on all outdoor units to ON.

Only use shielded cables.

(5) Address setting method

Unit or controller

1 Indoor unit Main con-

IC 01 to 50 Assign the lowest

Address set-

ting range

troller

Sub controller

2 MA remote

controller

Main remote con-

MA No settings

required

troller

Sub remote con-

MA Sub remote

controller

troller

3 Outdoor unit OC

51 to 100 Assign an address

Shielded cable connection

Daisy-chain the S terminals of the terminal block (TB7) and of the system controller on the outdoor units with the shielded cable. Connect the S (shield) terminal of the terminal block (TB7) on the outdoor unit whose power jumper was moved from CN41 to CN40 to the ground terminal ( ) of the control box.

3) MA remote controller wiring Same as section [5] 1.

When two remote controllers are connected to the system

Same as section [5] 1.

Group operation of indoor units

Same as section [5] 1.

4) Switch setting Address setting is required as follows.

Setting method Notes

To perform a group operaaddress to the main indoor unit in the group.

Assign sequential numbers starting

tion of indoor units that fea-

ture different functions,

designate the indoor unit

with the most functions in

the group as the main unit.

with the address of the main unit in the same group. [main unit +1, +2, +3…]

- Make the same indoor unit group settings with the system controller as the ones

Settings to be made in the remote con-

that were made with the MA remote controller.

troller function selection mode

To set the address to "100,"

that equals the ad-

set the switch to "50."

dress of the indoor unit in the same refrigerant circuit plus

50. Assign sequential addresses to the outdoor units in the same refrigerant circuit. The outdoor units are automatically designated as OC and OS. (Note)

Factory

setting

Main

The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.

HWE09060 GB

33- 33 -

Page 43

[ II Restrictions ]

Note1. "-" Note2. If the A/C system is designed to use cooling mode under outdoor temperature 0°C, H’<=15m. Note3. As bents cause pressure loss on transportation of refrigerant, fewer bents design is better;

Piping length needs to consider the actual length and equivalent length which bents are counted. Equivalent piping length (m)=Actual piping length+"M" x Quantity of bent.

IU : Indoor unit , OU : Outdoor unit

H (OU above IU)

H' (OU under IU)

Bent equivalent length "M"

M (m/bent [ft./bent])Outdoor Model

PUHY-P250YHM 0.42 [1.38]

Piping length (m [ft.])

Max. length

Piping in the figureItem

Max. equivalent length

A Height between OU and IU (OU above IU) Height between OU and IU (OU under IU)

OU: Outdoor Unit, IU: Indoor Unit

190 [623']165 [541']Farthest IU from OU (L1) H H'

50 [164'] 40 [131']

(mm [in.])

Outdoor Pipe(Gas)Pipe(Liquid)

PUHY-P250YHM=CMY-Y102L-G2 ø22.20 [7/8"]ø9.52 [3/8"] *1

*1. A>=90m [295ft.], ø12.70mm [1/2in.]

Piping "A" size selection rule

(mm [in.])

Indoor Unit size Pipe(Gas)Pipe(Liquid) P250 ø22.20 [7/8"]ø9.52 [3/8"]

Indoor unit piping size selection rule

P300-F *2 ø22.20 [7/8"]ø9.52 [3/8"]

*2. "-F" indicates Fresh air intake type

[6] Restrictions on Pipe Length

P250 model

HWE09060 GB

- 34 -

Page 44

[ II Restrictions ]

Outdoor Twinning Kit CMY-Y100VBK2

Piping length needs to consider the actual length and equivalent length which bents are counted. Equivalent piping length (m)=Actual piping length+"M" x Quantity of bent.

H (OU above IU)

H' (OU under IU)

IU : Indoor unit , OU : Outdoor unit

To indoor unit

2mTo indoor unit

Trap (gas pipe only)

Upward incline

Downward incline

Install the pipes from the outdoor unit to the branch joint with a downward incline.

If the length of pipe between the branch joint and outdoor unit exceeds 2 m, provide at rap at a distance 2 m or less from the branch joint.

max

Bent equivalent length "M"

M (m/bent [ft./bent])Outdoor Model

PUHY-P500YSHM 0.50 [1.64] PUHY-P750YSHM 0.70 [2.29]

Piping length (m [ft.])

Max. length

Piping in the figureItem

Max. equivalent length

S+A Height between OU and IU (OU above IU) Height between OU and IU (OU above IU)

OU: Outdoor Unit, IU: Indoor Unit

190 [623']165 [541']Farthest IU from OU (L1)

h2 -0.1[0.3']Height between OU and OU

S+T -10[32']Distance between OU and OU

H H'

50 [164'] 40 [131']

(mm [in.])

Outdoor Pipe(Gas)Pipe(Liquid) CMY-Y100VBK2 ø28.58[1-1/8"]ø15.88[5/8"] CMY-Y200VBK2 ø34.93[1-3/8"]ø19.05[3/4"]

CMY-Y100VBK2; PUHY-P500YSHM CMY-Y200VBK2; PUHY-P750YSHM

Piping "A" size selection rule

(mm [in.])

Indoor Unit size Pipe(Gas)Pipe(Liquid) P500 ø28.58 [1-1/8"]ø15.88 [5/8"] P600-F * ø28.58 [1-1/8"]ø15.88 [5/8"] P750 ø34.93 [1-3/8"]ø19.05 [3/4"] P900-F ø34.93 [1-3/8"]ø19.05 [3/4"]

* "-F" indicates Fresh air intake type

Indoor unit piping size selection rule

P500 and P750 models

HWE09060 GB

- 35 -

Page 45

[ II Restrictions ]

- 36 -

GBHWE09060

Page 46

III Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit .......................................................... 39

[2] Control Box of the Outdoor Unit....................................................................................... 41

[3] Outdoor Unit Circuit Board............................................................................................... 42

HWE09060 GB

- 37 -

Page 47

- 38 -

Page 48

[ III Outdoor Unit Components ]

Fan

Control Box

Fan guard

Fin guard

Front panel

Heat exchanger

III Outdoor Unit Components

[1] Outdoor Unit Components and Refrigerant Circuit

1. Outdoor unit components (1) PUHY-P250, P350, P400YHM-A

HWE09060 GB

- 39 -

Page 49

[ III Outdoor Unit Components ]

High pressure sensor(63HS1)

Liquid side valve

High-pressure switch(63H1)

Compressor cover

Accumulator

Compressor

Oil separator

Check valve

High pressure check joint

Low pressure sensor(63LS)

4-way valve(21S4a)

4-way valve(21S4b)

Low pressure check joint

Linear Expansion

Valve(LEV1)

Subcool coil

Linear Expansion Valve(LEV2a,2b)

Solenoid valve (SV1a)

Solenoid valve (SV9)

Gas side valve

Solenoid valve(SV5b)

Check valve

High pressure check joint

Low pressure sensor(63LS)

4-way valve(21S4a)

4-way valve(21S4b)

4-way valve(21S4c)

Low pressure check joint

Linear Expansion

Valve(LEV1)

Subcool coil

Linear Expansion Valve(LEV2a,2b)

High pressure sensor(63HS1)

High-pressure switch(63H1)

Compressor cover

Accumulator

Compressor

Oil separator

Solenoid valve (SV1a)

Solenoid valve (SV9)

Solenoid valve(SV5b)

Solenoid valve(SV5c)

Gas side valve

Liquid side valve

2. Refrigerant circuit (1) PUHY-P250YHM-A

(2) PUHY-P350 and P400YHM-A

HWE09060 GB

- 40 -

Page 50

[ III Outdoor Unit Components ]

Control box houses high-voltage parts. When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. (It takes about 10 minutes to discharge electricity after the power supply is turned off.)

Control board

DC reactor (DCL)

Electromagnetic relay(72C)

Noise filter

Note.1

INV board

Fan board

Rush current protection resistor (R1,R5) Note.2

Terminal block for transmission line (TB3, TB7)

M-NET board

Terminal block for power supply L1,L2,L3,N, (TB1)

Capacitor(C100)

[2] Control Box of the Outdoor Unit

1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the waterproof and dust proof properties of the control box and may result in damage to its internal components.

2) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the terminals to remove them.

HWE09060 GB

- 41 -

Page 51

[ III Outdoor Unit Components ]

CN332 Output 18VDC GND (

Fan board

)

LED2 Lit during normal CPU operation

CN72 72C driving output

Serial communication signal input GND (

INV board)

Output 17VDC

CN801 Pressure switch connection

CN4 GND Serial communication signal output

LEV driving output

LED1 Service LED

SWU1,2 Address switch

SW1-5 Dip

switch

Sensor input

CNVCC2 Output 12VDC Output 5VDC GND

CNIT Output 12VDC GND Output 5VDC Power supply detection input

Power supply ON/OFF signal output CNS2 Transmission line input/output for centralized control system (30VDC)

CN41 Power supply for centralized control OFF

CN40 Power supply for centralized control ON

CN102

Indoor/outdoor transmission line input/output (30VDC)

Power supply input for centralized control system (30VDC)

External signal input (contact input)

F01 Fuse 250V AC/3.15A

CNAC L1 N

LED3 Lit when powered

Actuator driving output

Output 12VDC Compressor ON/OFF output

Error output

CN51

CNAC2 L1 N

CNDC Bus voltage input P N

CN2

[3] Outdoor Unit Circuit Board

1. Outdoor unit control board

HWE09060 GB

- 42 -

Page 52

[ III Outdoor Unit Components ]

2. M-NET board

Grounding

CN04 Bus voltage input P N

CNS2 Transmission line input/output for

CN102

Power supply output for centralized control system Indoor/outdoor transmission line input/output

Grounding

TB3 Indoor/outdoor transmission block

centralized control system

Ground terminal for transmission line

CNIT 12VDC input GND 5VDC input Power supply detection output Power supply ON/OFF signal input

TB7 Terminal block for transmission line for centralized control

LED1 Power supply for indoor transmission line

TP1,2 Check pins for indoor/outdoor transmission line

HWE09060 GB

- 43 -

Page 53

[ III Outdoor Unit Components ]

3. INV board

Bus voltage check terminal (P) Note

IGBT (Rear)

CN1 Bus voltage output N

P Bus voltage check terminal (N) Note 1

SC-L1 Input(L1)

SC-L2 Input(L2)

SC-P1

SC-P2 Bus voltage Input(P)

Rectifier diode output (P)

CN6 Open: No-load operation setting

LED1 Lit: Inverter in normal operation Blink: Inverter error

Short-circuited: Normal setting

CN5V GND 5VDC output

RSH1 Overcurrent detection resistor

CN4 GND

CNTYP Inverter board type

SC-V Inverter output(V)

SC-W Inverter output(W)

SC-U Inverter output(U)

(INV Board) Serial communication signal output

CN2

erial communication signal output GND 17VDC input

SC-L3 Input(L3)

CT22 Current sensor(W)

CT3 Current sensor(L3)

CT12 Current sensor(U)

C30 C37 Smoothing capacitor

1) Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. It takes about 10 minutes to discharge electricity after the power supply is turned off.

HWE09060 GB

- 44 -

Page 54

[ III Outdoor Unit Components ]

4. Fan board

CNVDC Bus voltage input N P

CNINV Inverter output W V U

R630,R631 Overcurrent detection resistor

DIP IPM Rear

CN18V Input 18VDC GND

LED3 Lit during normal CPU operation

CN4 GND Serial communication signal output

CN5

GND(Control board)

Serial communication signal output

CN21 Serial communication signal output GND(INV board) Input 17VDC

CN22 GND(INV board) Input 5VDC Serial communication signal input GND(INV board) Output 17VDC

THBOX Thermistor (Control box internal temperature detection)

LED1 Inverter in normal operation

LED2 Inverter error

HWE09060 GB

- 45 -

Page 55

[ III Outdoor Unit Components ]

CN4 Output (Rectified L2-N current) P N

CN5 Output (Rectified L2-N current) P N

TB21 Input/output(L1)

TB22 Input/output(L2)

TB23 Input/output(L3)

TB24 Input(N)

CN1B Input L3 L2

CN1A Input N L1

Grounding

F1,F2,F3,F4 Fuse 250VAC 6.3A

CN3 Output L1 N

Grounding

CN2 Surge absorber circuit Surge absorber circuit Short circuit Short circuit

5. Noise Filter

HWE09060 GB

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Page 56

IV Indoor Unit Components

[1] External Dimensions ........................................................................................................ 49

[2] Indoor Unit Components and Internal Structure .............................................................. 55

[3] Control Box of the Indoor Unit.......................................................................................... 57

[4] Indoor Unit Circuit Board.................................................................................................. 58

[5] Fan................................................................................................................................... 59

HWE09060 GB

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Page 57

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Page 58

[ IV Indoor Unit Components ]

IV Indoor Unit Components

[1] External Dimensions

-1- Standard type

1. PFAV-P250VM-E

39.5

160

160X5=800

Supply air duct flange

120 120

835

104

Unit:mm

895

39.5

152

18-ø3Holes

20 19

296

336

1234

1262

485

1200

Supply air duct flange

Remote controller

Front air inlet

Rear air inlet

225

215

130

105

185

385

118 2

Notes 1.Be sure to wire the transmission line and power line separately.

2.When the room in which the unit is installed is airtight,

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

to open etc.

To avoid these kinds of problems please ensure that a small amount of

300

800

1650

air is able to ventilate the room via some kind of small hole or vent.

DesignationNO.

Indoor unit

Minimum necessary dimension.

Required space for service and air flow

HWE09060 GB

500 100

Secure the proper space for

installation work such as

piping and wiring separately.

Service panel

(Service for fan pulley)

Service panel

(Service for motor pulley)

Service panel

(Service for thermistor)

- 49 -

7 456

Refrigerant pipe<Gas>···ø22.2 brazed 1234567

For mounting anchor bolt 4-ø12 Holes 8

Earth terminal(installed in the control box)···M5

Wiring hole(The outdoor unit connection,Transmission line)······ø27

Wiring hole······ø27

Power supply wiring hole······ø43

Drain hole······Rc 1

Refrigerant pipe<Liquid>···ø9.52 brazed

Page 59

[ IV Indoor Unit Components ]

2. PFAV-P500VM-E

Unit:mm

247

247X5=1235

200

Supply air duct flange

444 484

20 21

18-ø3.5Holes

1213

1253

635

Front air inlet

Remote controller

Rear air inlet

296

169

6070100

118120

530

1478

1450

440

Indoor unit

Minimum necessary dimension.

1000

100

Secure the proper space for

Required space for service and air flow

Supply air duct flange

1420

installation work such as

piping and wiring separately.

1850

645

213

1398

2.When the room in which the unit is installed is airtight,

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

to open etc.

To avoid these kinds of problems please ensure that a small amount of

Notes 1.Be sure to wire the transmission line and power line separately.

602

Refrigerant pipe<Gas>···ø28.5 brazed

Refrigerant pipe<Liquid>······ø15.88 brazed

NO. Designation

air is able to ventilate the room via some kind of small hole or vent.

Drain hole······Rc 1 1/4

Power supply wiring hole···ø52

Wiring hole······ø37

Wiring hole(The outdoor unit connection,Transmission line)···ø27

Earth terminal(installed in the control box)···M5

For mounting anchor bolt 4-ø12 Holes 8765432

HWE09060 GB

- 50 -

Page 60

[ IV Indoor Unit Components ]

3. PFAV-P750VM-E

Unit:mm

400

1000

Indoor unit

Minimum necessary dimension.

750 500

Required space for service and air flow

Secure the proper space for installation work

such as piping and wiring separately.

Please secure the size of *sign when you serve

note:1

580100

Air filter

875

the air filter from the right side of the main body.

28-ø4.3Holes

994

741

47656

106

1212

(Size on inside)

200X5=1000

106

195

493

(599)

300

740

810

150

220

450

112

71525

*750(106)

(Size on inside)

200X7=1400

1460

200

(146)*750

Air filter service space

61575

(Size on inside)

110X4=440

Supply air duct flange

476

1774

1822

1750

(Size on inside)

110X4=440

20-ø4.3Holes

606

439606

Supply air duct flange

Remote controller

1830

300

976

1045

1722 50

Notes 1.Please secure the size in the service space of the air filter(*sign)

for a left side or a right side of the unit.

2.Be sure to wire the transmission line and power line separately.

3.When the room in which the unit is installed is airtight,

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

to open etc.

To avoid these kinds of problems please ensure that a small amount of

air is able to ventilate the room via some kind of small hole or vent.

4.Connect by using the connecting pipes that are supplied.

490

220

150

(50)

191

140100

261

DesignationNO.

Drain hole<Lower side>······Rc 1

Earth terminal(installed in the control box)······M5

Wiring hole(The outdoor unit connection,Transmission line)······ø38

Wiring hole······ø62

Drain hole<Upper part>······Rc 1 1/4

Refrigerant pipe<Liquid>···ø19.05 brazed

Refrigerant pipe<Gas>···ø34.93 brazed 1234567

For mounting anchor bolt 4-ø15 Holes 8

HWE09060 GB

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Page 61

[ IV Indoor Unit Components ]

-2- Fresh air intake type

1. PFAV-P300VM-E-F

120120104

296

336

125125

30020

895

855

112 6

39.539.5

160

160X5=800

Supply air duct flange

3.5 Holes

18-

13110X10=1100

110

Unit:mm

(1126)

300173

Rear air inlet duct flange

485

225

215

130

105

185

385

Rear air inlet duct flange

3 Holes

20 19

28-

152

300

1234

800

100500

1262

Supply air duct flange

1200

Remote controller

1650

118 2

to open etc.

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

To avoid these kinds of problems please ensure that a small amount of

2.When the room in which the unit is installed is airtight,

air is able to ventilate the room via some kind of small hole or vent.

Notes 1.Be sure to wire the transmission line and power line separately.

······

4567

9.52 brazed

22.2 brazed

···

·······

···

12 Holes

Indoor unit

Secure the proper space for

installation work such as

piping and wiring separately.

Rc 1

········

·····

Minimum necessary dimension.

Required space for service and air flow

(Service for fan pulley)

Service panel

HWE09060 GB

(Service for motor pulley)

Service panel

- 52 -

(Service for thermistor)

Service panel

Refrigerant pipe<Gas>

NO. Designation

Wiring hole

Refrigerant pipe<Liquid>

Wiring hole(The outdoor unit connection,Transmission line)

Power supply wiring hole

Drain hole

Earth terminal(installed in the control box)

For mounting anchor bolt 4-

Page 62

[ IV Indoor Unit Components ]

2. PFAV-P600VM-E-F

125125

110

32020 15

(1346)

Unit:mm

12X110=1320

Rear air inlet duct flange

3 Holes

32-

247X5=1235

20020033

247

Supply air duct flange

444

8220

484

1346

1213

1253

635

3.5 Holes

18-

Rear air inlet duct flange

Remote controller

320224

296

169

6070100

118120

530

1478

1450

90440

1000

100

Indoor unit

Secure the proper space for

installation work such as

piping and wiring separately.

Minimum necessary dimension.

100

Required space for service and air flow

Supply air duct flange

1420

1850

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

to open etc.

To avoid these kinds of problems please ensure that a small amount of

2.When the room in which the unit is installed is airtight,

1398

air is able to ventilate the room via some kind of small hole or vent.

Notes 1.Be sure to wire the transmission line and power line separately.

······

DesignationNO.

15.88 brazed

28.5 brazed

···

Rc 1 1/4

········

9 602

Drain hole

Refrigerant pipe<Gas>

Refrigerant pipe<Liquid>

1 2 3 4 5 6 7

···

·······

12 Holes

·····

Wiring hole

Earth terminal(installed in the control box)

Power supply wiring hole

Wiring hole(The outdoor unit connection,Transmission line)

For mounting anchor bolt 4-

HWE09060 GB

- 53 -

Page 63

[ IV Indoor Unit Components ]

3. PFAV-P900VM-E-F

Unit:mm

400

1000

Indoor unit

Minimum necessary dimension.

750 500

Required space for service and air flow

Secure the proper space for installation work

such as piping and wiring separately.

Please secure the size of *sign when you serve

note:1

580100

Air filter

875

the air filter from the right side of the main body.

28-ø4.3Holes

994

741

47656

106

1212

(Size on inside)

200X5=1000

106

195

493

(599)

300

740

810

150

220

450

112

71525

*750(106)

(Size on inside)

200X7=1400

1460

200

(146)*750

Air filter service space

61575

(Size on inside)

110X4=440

Supply air duct flange

476

1774

1822

1750

(Size on inside)

110X4=440

20-ø4.3Holes

606

439606

Supply air duct flange

Remote controller

1830

300

976

1045

1722 50

Notes 1.Please secure the size in the service space of the air filter(*sign)

for a left side or a right side of the unit.

2.Be sure to wire the transmission line and power line separately.

3.When the room in which the unit is installed is airtight,

the pressure in the room may become negative.

This may result in problems such as the door to becoming difficult

to open etc.

To avoid these kinds of problems please ensure that a small amount of

air is able to ventilate the room via some kind of small hole or vent.

4.Connect by using the connecting pipes that are supplied.

490

220

150

(50)

191

140100

261

DesignationNO.

Drain hole<Lower side>······Rc 1

Earth terminal(installed in the control box)······M5

Wiring hole(The outdoor unit connection,Transmission line)······ø38

Wiring hole······ø62

Drain hole<Upper part>······Rc 1 1/4

Refrigerant pipe<Liquid>···ø19.05 brazed

Refrigerant pipe<Gas>···ø34.93 brazed 1234567

For mounting anchor bolt 4-ø15 Holes 8

HWE09060 GB

- 54 -

Page 64

[ IV Indoor Unit Components ]

WARNING

Material: Hot-dip galvanized steel sheet

Rear panel

Material: Coil phosphorus deoxidized copper Fins aluminum

Indoor heat exchanger

Material: Hot-dip galvanized steel sheet

Outlet

Siroccofan

Material: Alloyed hot-dip galvanized steel sheet

*Fresh air intake type only

Drain pan

Intake duct flange

Pulley Materials: Gray cast iron

Material: Hot-rolled mild steel plate

Fan motor

Material: Synthetic non-woven fabric

Air filter

Linear expansion valve

Material: Hot-dip galvanized steel sheet

Control box

Control board

Terminal block for power supply connection

Terminal block for transmission

Material: Alloyed hot-dip galvanized steel sheet

*Fresh air intake type does not have a perforated plate for air return.

Front panel (Lower)

Remote controller

Material: Alloyed hot-dip galvanized steel sheet

Front panel (Upper)

Material: Hot-dip galvanized steel sheet

Fan

Material: Alloyed hot-dip galvanized steel sheet

*Fresh air intake type only

Intake duct flange

Material: Alloyed hot-dip galvanized steel sheet

* Fresh air intake type does not have a perforated plate for air return.

Material: Alloyed hot-dip galvanized steel sheet

Material: Hot-dip galvanized steel sheet

Material: Hot-rolled mild steel plate

Material: Synthetic non-woven fabric

Material: Hot-dip galvanized steel sheet

Material: Alloyed hot-dip galvanized steel sheet

Material: Coil phosphorus deoxidized copper Fins aluminum

Material: Hot-dip galvanized steel sheet

Material: Gray cast iron

Material: Hot-dip galvanized steel sheet

V-belt

Fan

Front panel (Upper)

Remote controller

Front panel (Lower)

Terminal block for transmission

Terminal block for power supply connection

Control board

Control box

Air filter

Fan motor

Linear expansion valve

Drain pan

Indoor heat exchanger

Rear panel

Pulley

Outlet

[2] Indoor Unit Components and Internal Structure

Hold the front panel up when opening it.

1. PFAV-P250VM-E, PFAV-P300VM-E-F

2. PFAV-P500VM-E, PFAV-P600VM-E-F

HWE09060 GB

- 55 -

Page 65

[ IV Indoor Unit Components ]

Control board

Material: Coil phosphorus deoxidized copper Fins aluminum

Material: Gray cast iron

Material: PP Honeycomb fabric

Material: Alloyed hot-dip galvanized steel sheet

Heat exchanger

Pulley

Material: Hot-rolled mild steel sheet

Fan motor

Material: Hot-dip galvanized steel sheet

Fan

Material: Alloyed hot-dip galvanized steel sheet

Front panel (upper)

Remote controller

Terminal block for transmission

V-belt

Drain pan F

Material: Hot-dip galvanized steel sheet

Control box

Terminal

Linear expansion valve

Scroll dumper

Air filter

Material: Alloyed hot-dip galvanized steel sheet

Drain pan

Material: Hot-dip galvanized steel sheet

Rear panel

Material: Cold-rolled steel plate JIS G 3141 1.2t

Drain pan

Detailed view

3. PFAV-P750VM-E, PFAV-P900VM-E-F

HWE09060 GB

- 56 -

Page 66

[ IV Indoor Unit Components ]

１次側

2次側

CN2M

CN90

CN28

CN3A

CND

Circuit board

Auxiliary relay X4

Auxiliary relay 52F

Terminal block for transmission line connection TB5

Terminal block for remote controller TB15

Power supply transformer T

Power supply terminal block TB2

Thermal overcurrent relay 51F

M1 M2 S

１次側

２次側

１次側

２次側

CN28

CND

CN3A

CN90

CN2M

CN28

CN90

CN3A

CND

Terminal block for transmission line connection TB5 Terminal block for remote controller TB15

Power supply transformer T

Thermal overcurrent relay 51F

Power supply terminal block TB2

Auxiliary relay 52F Auxiliary relay X1 Auxiliary relay X4 Auxiliary relay X4

No. 2 Circuit board

No. 1 Circuit board

CN2M

[3] Control Box of the Indoor Unit

1. PFAV-P250, P500VM-E, PFAV-P300, P600VM-E-F

2. PFAV-P750VM-E, PFAV-P900VM-E-F

HWE09060 GB

- 57 -

Page 67

[ IV Indoor Unit Components ]

CN90

Fan output

CN33

Defrost output

CN32 External operation input

SW1, 2, 3, 4, 5, 7, 8,11,12, SWC Dip switches and slide switches

CN51, CN52 To M-control remote display kit

CN60, CN7V LEV output

CN3A MA remote controller transmission cable

CN93 Wireless remote controller transmission cable

CN31 Drain sensor input

Thermistor input

·CN20

·CN21

·CN29

·CN22

F901 Fuse

CND

Power input

(200VAC)

CNT

Power output

(to transformer)

CN3T Power input (to transformer)

CN2M Indoor system transmission cable

CNP

Steam hot

water

coil output

CN28 Fan error input

CN41

HA input/output

[4] Indoor Unit Circuit Board

1. Indoor unit control board

HWE09060 GB

- 58 -

Page 68

[ IV Indoor Unit Components ]

Use the following procedure to replace the pulley and motor of the PFAV-P500VM-E.

1. Replacement Procedure (1) Attaching the fan pulley set and electric motor pulley set

Remove the front lower and upper panels (2 screws for each).

2) Loosen the electric motor base securing bolts and electric motor base slide bolt, and then remove the V belt. See Figures 1 and 2.

3) Loosen the set screws of the pulleys, and then remove the fan pulley. * Depending on the diameter of the pulley, the electric motor may need to be slid towards the back side.

4) Slide the electric motor base towards the front.

5) Attach the replacement pulleys and V belt.

6) Set the parallelism of the fan pulley and electric motor pulley so that the contents of Table 1 and Figure 3 are satisfied.

7) Tighten the set screws. (Torque: 13.5N•m) Furthermore, coat the set screws with screw lock (procure locally) to prevent them from coming undone. (Screw lock: ThreeBond 1332N or the equivalent)

8) Attach the parts in the reverse order of removal.

(2) Attaching the electric motor

When the electric motor is removed, make sure the work is performed by two people to ensure it is not dropped.

Remove the front lower and upper panels (2 screws for each).

2) Loosen the electric motor base securing bolts and electric motor base slide bolt, and then remove the V belt. See Figures 1 and 2.

3) Loosen the set screws of the pulleys, and then remove the fan pulley. * Depending on the diameter of the pulley, the electric motor may need to be slid towards the back side.

4) Slide the electric motor base towards the front.

5) Loosen the stopper securing screw of electric motor base as shown in Figure 4.

6) Remove the electric motor. (4 bolts)

7) Using standard bolts and nuts, replace the electric motor.

8) Attach the other parts in the reverse order of removal.

2. Cautions State of V-belt tension

1) While the tension per V-belt is at an appropriate deflection amount: , set the V-belt so that the deflection weight (W) meet the values specified in Figure 6 and Table 2.

2) After the V-belt becomes used to the pulley (after approximately 24 hours of operation), make sure the belt is not loose, and if the belt is loose, adjust it to an appropriate tension as described in Table2. Furthermore, if the belt is new, adjust to approximately 1.15 times the deflection force (W).

3) After adjusting for initial stretching in 2), readjust the tension every 2,000 hours. The belt life is over when the belt circumference has stretched by 2% including the initial stretching of the belt (approximately 1%). (After approximately 5,000 hours of operation.)

3. Tools

When loosening the securing bolts of the electric motor base, work can be performed easier by using following tools.

Electric motor base securing bolts

Electric motor base slide bolt

Slide towards the front

2 .giF1 .giF

Fig. 3

Part A

Stopper

Part A Detailed View

Fig. 4

Fig. 5

Deflection Weight(W)

=0.016 C

C: Center distance(mm)

Fig. 6

Table 1

Parallelism

Pulley

K (min.) Notes

Cast-iron pulley

10 or less

Offset between the pulleys (B) equivalent to 3 mm [1/10"] every 1 m [3.2 ft] of the distance between the axes (A)

Control box cover attaching screws

10.5

190

27.5

Extension bar Ratchet handle/9.5mm [3/8"]

Table 2

Model

Power

frequency

Deflection

force

Amount of

deflection

PFAV-P250VM-E

PFAV-P500VM-E

PFAV-P750VM-E

PFAV-P300VM-E-F

PFAV-P600VM-E-F

PFAV-P900VM-E-F

50Hz 18.0N 6.9mm 60Hz 15.9N 6.8mm 50Hz 28.9N 3.6mm 60Hz 24.9N 3.6mm 50Hz 32.4N 4.9mm 60Hz 28.2N 4.9mm 50Hz 12.8N 6.5mm 60Hz 13.2N 6.8mm 50Hz 24.2N 3.8mm 60Hz 20.8N 3.8mm 50Hz 19.4N 5.4mm 60Hz 17.1N 5.4mm

[5] Fan

HWE09060 GB

- 59 -

Page 69

[ IV Indoor Unit Components ]

- 60 -

GBHWE09060

Page 70

V Remote Controller

[1] Functions and Specifications of MA Remote Controller................................................... 63

[2] Using the built-in Temperature Sensor on the Remote Controller ................................... 63

HWE09060 GB

- 61 -

Page 71

- 62 -

Page 72

[ V Remote Controller ]

V Remote Controller

[1] Functions and Specifications of MA Remote Controller

1. Functions/Specifications

Functions/Specifications MA remote controller

Remote controller address setting Not required

indoor-outdoor unit address setting Required

Wiring method Non-polarized two-wire

∗To perform a group operation, daisy-chain the indoor units using non-polarized two-

wire cables.

Remote controller installation posi-

Attached to the unit body

tion

Grouping change MA remote controller wiring between indoor units requires rewiring.

*1. MA remote controller refers to MA remote controller (PAR-21MAA).

[2] Using the built-in Temperature Sensor on the Remote Controller

1. Selecting the position of temperature detection (Factory setting: SW1-1 on the controller board on the indoor unit is set to OFF.)

To use the built-in sensor on the remote controller, set the SW1-1 on the controller board on the indoor unit to ON.

Some models of remote controllers are not equipped with a built-in temperature sensor. Use the built-in temperature sensor

on the indoor unit instead.

When using the built-in sensor on the remote controller, install the remote controller where room temperature can be detected.

HWE09060 GB

- 63 -

Page 73

[ V Remote Controller ]

- 64 -

GBHWE09060

Page 74

VI Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit ................................................................. 67

[2] Electrical Wiring Diagram of the Indoor Unit .................................................................... 68

[3] Electrical Wiring Diagram of Transmission Booster......................................................... 72

HWE09060 GB

- 65 -

Page 75

- 66 -

Page 76

[ VI Electrical Wiring Diagram ]

Control box internal temperatureTHBOX

Pipe temperature

Z24,25

Thermistor

Subcool bypass outlet

temperature

Discharge pipe temperature

ACC inlet pipe temperature

Subcooled liquid refrigerant

temperature

OA temperature

IGBT temperature

Function setting connector

THHS

TH7

TH6

TH5

TH4

TH3

TH2

Power supply

Explanation

Indoor/Outdoor transmission

cable

Central control transmission

cable

Terminal

block

TB7

TB3

TB1

Symbol

Pressure control,Refrigerant flow

rate control

DC reactorDCL

SV1a

LEV2a,b

LEV1

Linear

expansion

valve

Solenoid

valve

HIC bypass,Controls refrigerant

flow in HIC circuit

CT12,22,3

CH11

Crankcase heater(for heating the compressor)

Current sensor(AC)

Magnetic relay(inverter main circuit)

72C

Low pressure

Discharge pressure

High pressure protection for the

outdoor unit

Pressure

switch

Pressure

sensor

63LS

63H1

Symbol

Explanation

4-way valve21S4a,b,c

For opening/closing the bypass

circuit under the O/S

SV5b,c

SV9

63HS1

*1.Single-dotted lines indicate wiring

not supplied with the unit.

*2.Dot-dash lines indicate the control

box boundaries.

*3.Refer to the Data book for connecting

input/output signal connectors.

*4.Daisy-chain terminals (TB3) on the

outdoor units in the same refrigerant

system together.

*5.Faston terminals have a locking

function.Make sure the terminals

are securely locked in place after

insertion.Press the tab on the

terminals to removed them.

*6.Control box houses high-voltage parts.

Before inspecting the inside of the

control box,turn off the power,keep

the unit off for at least 10 minutes,

and confirm that the voltage between

FT-P and FT-N on INV Board has dropped

to DC20V or less.

P350/P400

Solenoid

valve

Outdoor unit heat exchanger

capacity control

*7 exist

*7 do not exist

Model name

*7.Difference of appliance

Appliance

P250

For opening/closing the bypass

circuit

SW1

ONOFF

SW2

ONOFF

SW3

ONOFF

1's

digit

LED1

Display

setting

LED2:CPU in operation

Z241Z25

CNTYP5

green

CNTYP4

green

t°t

CNTYP2

black

12345

516

CNLVC

red

463

CNLVA

CNLVB

red

123

R34

C30

C32

C34

456

C36

LEV2b

LEV2a

LEV1

213

63LS

63HS1

213

321

CN202

red

CN201

OFF

CN215

black

TB1

black

L3L2L1

AC250V

6.3A T

black

white

F1,F2,F3

AC250V

6.3A T

DSA

R35

CT3

white

R33

SC-L3

R30

red white

R32

red

CNIT

CN2

C31

CN18V

blue

yellow

CNS2

TB7 Power

selecting

connector

Function

setting

CN5

red

C17

CN4

red

TB21

CN1B

LED1:Power supply to

Indoor/Outdoor transmission line

ZNR01

CN1A

6235

red

Noise

Filter

OFF

TB22

CN3

green

TB24

Fan motor

(Heat exchanger)

C33

TB23

CN211

TH4

TH2

IPM

FAN Board

F01

DC700V

4A T

LED3:Lit when powered

black

red

Diode

Bridge

72C

Central control

transmission

cable

Motor

(Compressor)

black

Indoor/Outdoor

transmission

cable

SC-P2

CN41

CN40

CN3D

123

red

CN3S

SV9

21S4c

SV5c

X08

X07

TP2

TP1

CT12

black

X06

L3L2

LED1:Normal

operation

SWU2

red

C35

M-NET power

supply circuit

CN213

red

DCL

63H1

white

CNIT

red

SWU1

CN51

5432

X05

CN102

CN04

red

SC-L2

red

X09

CN212

SC-P1

TH6

SV5b

CN506

CH11

CNS2

yellow

CN503

blue

TB3

TB7

SC-U

M-NET Board

CN1

black

C37

CN5V

yellow

CN504

green

X04

X03

10's

digit

C10

Unit address

setting

CN6

C100

LED1:Normal operation(lit)

/ Error(blink)

CN990

21S4a

blue

CN3N

yellow

CN3K

LED3:CPU in

operation

X10

CN507

red

CN508

black

CNAC

red

TH7

TH3

TH5

F01

AC250V

3.15A T

SV1a

CN4

CN2

X01

SC-V

IGBT

CT22

21S4b

CNAC2

black

CN501

72C

312

CN4

CN332

blue

Power failure

detection circuit

SW4

ONOFF

CNINV

CN2

CN102

432

CNDC

pink

123

CPU power

supply circuit

CN72

red

SW5

LED1

Control Board

SC-W

SC-L1

CN801

yellow

CNT01

CNT02

13 1

234

CN21

blue

CNVDC

114

CN4

blue

Compressor ON/OFF output

Error detection output

C631

12V

Indoor/Outdoor

transmission

cable

LED2:Error

R630

R631

CN22

red

CN502

X02

CN5

R31

Power Source

3N~

50/60Hz

380/400/415V

CNTYP

black

5C17

RSH1

THHS

FT-P

FT-N

INV Board

C630

+++

red

THBOX

VI Electrical Wiring Diagram

[1] Electrical Wiring Diagram of the Outdoor Unit

1. Electrical wiring diagram of the outdoor unit

(1) PUHY-P250, 350, 400YHM-A

HWE09060 GB

- 67 -

Page 77

[ VI Electrical Wiring Diagram ]

[2] Electrical Wiring Diagram of the Indoor Unit

-1- Standard type

1. PFAV-P250, P500VM-E

654321 654321

654321

1234567

CN7V CN60

LEV1

LEV2

P500

NameSymbol

(For mode selection)Switch

(For capacity code)Switch

(For mode selection)Switch

(For model selection)Switch

(2nd digit address set)

(1st digit address set)

(For model selection)Switch

(For four stages demand selection)Switch

(For trial run)Switch

(Connection No. set)Switch

(For mode selection)Switch

(For trial run of fan)Switch

R.B.

LCD

TB6

Remote controller

TB15

CN3A

Indoor controller board

Inside section of control box

CN2M

X04

X05

X06

(Shield)

transmission line

Indoor/Outdoor

ZNR

SW11

SW1 SW3 SW2 SW7 SW4

SW12

SW14 SW8 SW5 SWC

TB5

CN90

CN33

CND

CNT

CN3T

CN60

CN7V

CN31

CN29

CN21

CN20

CN28

Earth

9 7

35 1

313 13

123456

1234567

321

Thermistor(Piping temp. detection/gas)

Thermistor(Piping temp. detection/liquid)TH22

Auxiliary relay(Fan)X4

SW1

TH21 Thermistor(Supply air temp. detection)

Power supply

3N~

380/400/415V

50/60Hz

L2L1L3

TB2

52F

51F

52F

51F

123456

Name

Fan motor

Symbol

Symbol explanation

LEV1

TH23

Transmission terminal bed

Power source terminal bed

Fan motor

Liquid crystal monitor

Remote controller board

R.B.

LCD

TB2

TB5

SW5

SW4

SW3

SW2

Varistor

Fuse<6.3A>

MA Remote controller terminal bed

Terminal bed(Indoor unit)

TB6

ZNR

TB15

Switch

SW7

SW8

SW11

Electronic linear expan. valve 1

Transformer

LEV1

LEV2 Electronic linear expan. valve 2

SWE

SWC

SW12

SW14

Over current relay(Fan motor)

Contactor (Fan motor)

Connector(Defrost output)CN33

51F

52F

CN28 Connector(Fan failure)

* P250

TH23TH22TH21

t°t°t°

SWE

according to the local regulations.

wiring of the power supply.

on by setting SW1-9 dip switch to its ON position.

(Note:This function is not set to ON from the factory.)

2. Have all electric work done by a licensed electrician

3. Earth leakage circuit breaker should be set up on the

4. Mark indicates terminal bed, connector.

5. Auto-restart function from power failure can be turned

Note: 1. (Heavy dotted line):Field wiring

HWE09060 GB

- 68 -

Page 78

[ VI Electrical Wiring Diagram ]

2. PFAV-P750VM-E

R.B.

LCD

TB6

Remote controller

Fan motor

Liquid crystal monitor

Power source terminal bed

Transmission terminal bed

Remote controller board

TB2

TB5

R.B.

LCD

Symbol Name

Symbol explanation

Earth

Electronic linear expan. valve 3LEV3

Electronic linear expan. valve 2LEV2

Electronic linear expan. valve 1

Varistor

Transformer

MA Remote controller terminal bed

Fuse<6.3A>F1

F Fuse<6.3A>

TB6 Terminal bed(Indoor unit)

ZNR

TB15

51F Over current relay(Fan motor)

LEV1

Contactor (Fan motor)52F

Contactor (Fan motor)

Thermistor(Piping temp. detection/gas)

Thermistor(Piping temp. detection/liquid)

Thermistor(Supply air temp. detection)TH21

TH22

CN28 Connector(Fan failure)

TH23

CN33 Connector(Defrost output)

X1,X2,X4

Switch (For model selection)SW7

Switch (For model selection)

Switch (For capacity code)

Switch (For four stages demand selection)

Switch (For mode selection)

SW1

SW4

SW5

SW3

SW2

Switch (Connection No. set)

Switch (2nd digit address set)

Switch (1st digit address set)

Switch (For trial run)

Switch (For mode selection)

SW8

SWC

SW14

SW12

SW11

Switch (For trial run of fan)

SWE

Indoor/Outdoor

CN3A

(Shield)

X04

X05

X06

transmission line

TB5

CNP

CN2M

CN90

CN33

ZNR

CND

CNT

CN3T

CN60

CN7V

SW11

SW12

CN31

SW14

SW1

SW8

CN29

SW5

CN21

SW3

SWC

CN20

SW2

SW7

SWE

SW4

CN28

9 7 5 3 1

5 31

1 3

1 2 3 4 56

123456

123

1 2

TB15

Inside section of control box

Indoor controller board No.1

50/60Hz

380/400/415V

Power supply

3N~

123456

1 2345

TH23

t°

TH22

TH21

t° t°

52F

51F

TB2

LEV2 LEV1

Indoor controller board No.2

51F

52F

CN3A

CNP

CN2M

X04

X05

CN90

95 713 5

X06

CN33

ZNR

CND

13 13

CNT

CN3T

LEV3

CN60

654321

CN7V

6543217

SW11

SW12

CN31

SW14

SW8SW5

SWC

SW3 SW1

SW2

CN29

CN21

CN20

321

2121

SW7

SWE

SW4

CN28

654321

TH21 TH22 TH23

t° t° t°

the local regulations.

power supply.

SW1-9 of both No. 1 and No. 2 circuit boards to ON.

(Factory setting: OFF)

2. Have all electric work done by a licensed electrician according to

3. Earth leakage circuit breaker should be set up on the wiring of the

4. Mark indicates terminal bed, connector.

5. To enable the "auto recovery after power failure" function, set

Note: 1. (Heavy dotted line):Field wiring

HWE09060 GB

- 69 -

Page 79

[ VI Electrical Wiring Diagram ]

-2- Fresh air intake type

1. PFAV-P300, P600VM-E-F

654321

1234567

CN7V CN60

654321

LEV1

*P600

LEV2

LCD

R.B.

TB6

Remote controller

TB15

CN3A

Indoor controller board

Inside section of control box

CN2M

XO4

XO5

XO6

(Shield)

SWE

transmission line

Indoor/Outdoor

ZNR

SW11

SW12

SW1 SW3 SW2 SW7 SW4

SW14 SW8 SW5 SWC

TB5

CN90

CN33

CND

CNT

CN3T

CN60

CN7V

CN31

CN22

CN29

CN21

CN20

CN28

Earth

1234567123456

(For mode selection)

Power supply

3N~380/400/415V

50/60Hz

L2L1L3

TB2

52F

51F

9 7 5 3

52F

51F

Thermistor(Piping temp. detection/liquid)

Thermistor(Supply air temp. detection)

TH22

TH21

Symbol Name

Switch

Thermistor(Piping temp. detection/gas)

Switch

SW1

SW2

TH24 Thermistor(Outdoor temp. detection)

TH23

(For model selection)

Switch

SW7

SW5

SW4

SW8

SW3

(Connection No. set)

(1st digit address set)

Switch (For trial run of fan)

Switch (For mode selection)

Switch

SWE

SWC

SW11

SW14

SW12

(2nd digit address set)

(For trial run)

(For four stages demand selection)

(For model selection)

(For mode selection)

(For capacity code)

Name

Fan motor

Varistor

Fan motor

Power source terminal bed

Transmission terminal bed

MA Remote controller terminal bed

Remote controller board

123456

LEV1

Symbol explanation

P300

TH24

TH23TH22TH21

t°t°t° t°

TH21

t°

(accessory)

Liquid crystal monitor

TB2

R.B.

LCD

Symbol

Note:7

Fuse<6.3A>

Terminal bed(Indoor unit)

TB6

TB5

TB15

Electronic linear expan. valve 2LEV2

Transformer

Electronic linear expan. valve 1

ZNR

LEV1

Connector(Defrost output)

Contactor (Fan motor)

Over current relay(Fan motor)

Connector(Fan failure)

X4 Auxiliary relay(Fan)

52F

51F

CN33

CN28

to the local regulations.

the power supply.

setting SW1-9 dip switch to its ON position.

(Note: This function is not set to ON from the factory.)

A jumper is taped inside the control box without it being

connected to the connector.

Plug it into CN20 when using the supply air temperature to

control the room temperature.

Turn SW7-2 on the indoor unit to ON.

Install the sensor in the room to properly control the room

temperature.

2. Have all electric work done by a licensed electrician according

3. Earth leakage circuit breaker should be set up on the wiring of

4. Mark indicates terminal bed, connector.

5. Auto-restart function from power failure can be turned on by

6. Supply air thermistor is built in on the inside of the indoor unit.

7. Indoor unit is supplied with a thermistor.

Note: 1. (Heavy dotted line): Field wiring

HWE09060 GB

- 70 -

Page 80

[ VI Electrical Wiring Diagram ]

2. PFAV-P900VM-E-F

R.B.

LCD

TB6

Remote controller

Earth

Fan motor

Remote controller board

Liquid crystal monitor

Power source terminal bed

Transmission terminal bed

R.B.

LCD

TB2

Symbol Name

Symbol explanation

TB5

MA Remote controller terminal bed

Fuse<6.3A>F1

F Fuse<6.3A>

ZNR

TB6 Terminal bed(Indoor unit)

TB15

Contactor (Fan motor)52F

51F Over current relay(Fan motor)

LEV1

Electronic linear expan. valve 3LEV3

Electronic linear expan. valve 2LEV2

Electronic linear expan. valve 1

Varistor

Transformer

Contactor (Fan motor)

Thermistor(Supply air temp. detection)TH21

Thermistor(Piping temp. detection/gas)

Thermistor(Piping temp. detection/liquid)

Thermistor(Outdoor temp. detection)

Switch (For model selection)

Switch (For capacity code)

Switch (For mode selection)

SW1

SW4

SW3

SW2

TH22

TH24

CN28 Connector(Fan failure)

TH23

CN33 Connector(Defrost output)

X1,X2,X4

Switch (For model selection)SW7

Switch (For four stages demand selection)

SW5

Switch (Connection No. set)

Switch (2nd digit address set)

Switch (1st digit address set)

Switch (For trial run)

SW8

Switch (For trial run of fan)

Switch (For mode selection)

SWE

SWC

SW14

SW12

SW11

Indoor/Outdoor

CN3A

(Shield)

X04

X05

X06

ZNR

transmission line

TB5

CNP

CN2M

CN90

CN33

CND

313

CNT

TB15

Inside section of control box

Indoor controller board No.1

CN3T

152

31 34156

CN60

123456

CN7V

SW11

SW12

SW14

SW8

SW5

SWC

SWE

SW1

SW3

SW2

SW7

SW4

CN31

CN22

CN29

CN21

CN20

1 2

121212

1 2

CN28

123456

1 2 345

t°

t° t°

50/60Hz

380/400/415V

Power supply

3N~

TB2

52F

51F

LEV2 LEV1

TH24

TH23

TH22

t°

TH21

t°

CN3A

Indoor controller board No.2

51F

52F

TH21

Note:7

(accessory)

CNP

CN2M

X04

X05

X06

ZNR

SW11

SW12

SW14

SW8SW5

SWC

SWE

SW3 SW1

SW7 SW2

SW4

CN33

CND CN90

CNT

CN3T

CN60

CN7V

CN31

CN22

CN29

CN21

CN20CN28

95 7135

13 13

654321

6543217

321

2121

1212

654321

TH22 TH23 TH24

t° t° t°

LEV3

ON.

(Factory setting: OFF)

A jumper is taped inside the control box without it being connected to the connector.

Plug the jumper into CN20 on No. 1 circuit board when using the supply air temperature to control the room

temperature. Turn SW7-2 of both No. 1 and No. 2 circuit boards on the indoor unit to ON.

Install the sensor in the room to properly control the room temperature.

2. Have all electric work done by a licensed electrician according to the local regulations.

3. Earth leakage circuit breaker should be set up on the wiring of the power supply.

4. Mark indicates terminal bed, connector.

5. To enable the "auto recovery after power failure" function, set SW1-9 of both No. 1 and No. 2 circuit boards to

6. Supply air thermistor is built in on the inside of the indoor unit.

7. Indoor unit is supplied with a thermistor.

Note: 1. (Heavy dotted line): Field wiring

HWE09060 GB

- 71 -

Page 81

[ VI Electrical Wiring Diagram ]

100V/200VAC

Terminal block for power supply (TB1)

Red

Red Red

White

Green

250V 5A

Grounding

Red Red

Red

White

White White

White

White Blue Red Red

DSA

White

Blue

Red

Varistor

Noise filter

Stabilized power supply

CN2

CN1

Black

Green/Yellow

Choke coil

1 2

CN3

1 2 1 2

CN4

CN2

CN1

Electronic control board

Black

White

Red

Black

Terminal block 2 for transmission line (TB3) Expanded (indoor unit) side

Terminal block 1 for transmission line (TB2) Expanded (outdoor unit) side

[3] Electrical Wiring Diagram of Transmission Booster

HWE09060 GB

- 72 -

Page 82

VII Refrigerant Circuit

[1] Refrigerant Circuit Diagram ............................................................................................. 75

[2] Principal Parts and Functions .......................................................................................... 78

HWE09060 GB

- 73 -

Page 83

- 74 -

Page 84

[ VII Refrigerant Circuit ]

SCC (HIC circuit)

LEV1

SV1a

63H1

21S4a

ST3

ST6

63HS1

CJ2

ST7

ACC

TH4

TH2

TH3

TH7

TH6

21S4b

TH5

CP1

CJ1

63LS

SV5b

CV1

LEV2a

LEV2b

ST1

ST2

BV1

SV9

CP2

BV2

O/S

COMP

SCC (HIC circuit)

LEV1

SV1a

63H1

21S4a

ST3

ST6

63HS1

CJ2

ST7

TH4

TH2

TH3

TH7

TH6

21S4c

TH5

CP1

CJ1

63LS

SV5c

CV1

LEV2b

LEV2a

ST1

ST2

BV1

21S4b

SV5b

SV9

CP2

BV2

O/S

COMP

ACC

VII Refrigerant Circuit

[1] Refrigerant Circuit Diagram

1. Outdoor unit

(1) PUHY-P250YHM-A

(2) PUHY-P350 and P400YHM-A

HWE09060 GB

- 75 -

Page 85

[ VII Refrigerant Circuit ]

2. Indoor unit

(1) PFAV-P250VM-E, PFAV-P300VM-E-F

Thermistor TH4 <Outdoor unit inlet temperature detection>

Heat exchanger

Thermistor TH1 <Room temperature/Supply air

temperature detection>

(2) PFAV-P500VM-E, PFAV-P600VM-E-F

Thermistor TH3 <Gas pipe temperature detection>

Distributor

LEV

Thermistor TH2 <Liquid pipe temperature detection>

Cooling Heating

Gas pipe Brazed connection

Liquid pipe Brazed connection

Thermistor TH4 <Outdoor unit inlet temperature detection>

Heat exchanger

Thermistor TH1 <Room temperature/Supply air

LEV

Thermistor TH2 <Liquid pipe temperature detection>

temperature detection>

Distributor

LEV

Thermistor TH3 <Gas pipe temperature detection>

Cooling Heating

Gas pipe Brazed connection

Liquid pipe Brazed connection

HWE09060 GB

- 76 -

Page 86

[ VII Refrigerant Circuit ]

(3) PFAV-P750VM-E, PFAV-P900VM-E-F

Thermistor TH2 (No.1) <Detection of heat exchanger liquid pipe temperature>

Heat exchanger

Thermistor TH1 (No.1,2) <Room temperature/Return air temperature detection>

Thermistor TH3 (No.1) <Detection of heat exchanger gas pipe temperature>

Distributor

Linear expansion valve

Thermistor TH3 (No.2) <Detection of heat exchanger gas pipe temperature>

Thermistor TH2 (No.2) <Detection of heat exchanger liquid pipe temperature>

Cooling Heating

Gas pipe Brazed connection

Liquid pipe Brazed connection

HWE09060 GB

- 77 -

Page 87

[ VII Refrigerant Circuit ]

Pressure 0~4.15 MPa [601psi] Vout 0.5~3.5V

0.071V/0.098 MPa [14psi] Pressure [MPa] =1.38 x Vout [V]-0.69 Pressure [psi] =(1.38 x Vout [V] - 0.69) x 145

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

Connector

63HS1

123

2 3

[2] Principal Parts and Functions

1. Outdoor unit

Part

name

Compressor

High pressure sensor

Low pressure sensor

Symbols

(functions)

MC1 (Comp1)

Notes Usage Specifications Check method

Adjusts the amount of circulating refrigerant by adjusting the operating frequency based on the operating pressure data

63HS1 1) Detects high pressure

2) Regulates frequency and provides high-pressure protection

63LS 1) Detects low pressure

2) Provides low-pressure protection

200 - 250 models Low-pressure shell scroll compressor wirewound resistance 20°C[68°F] : 0.981Ω

Compressor model ENB52FA-YE 350 - 400 models Low-pressure shell scroll compressor wirewound resistance 20°C[68°F] : 0.583Ω Compressor model HNB78FA-YE

Pressure

63LS

0~1.7 MPa [247psi] Vout 0.5~3.5V

123

0.173V/0.098 MPa [14psi]

Connector

Pressure [MPa] =0.566 x Vout [V] - 0.283 Pressure [psi] =(0.566 x Vout [V] - 0.283) x 145

GND (Black)

Vout (White)

Vcc (DC5V) (Red)

Pressure switch

63H1 1) Detects high pressure

2) Provides high-pressure protection

4.15MPa[601psi] OFF setting

HWE09060 GB

- 78 -

Page 88

[ VII Refrigerant Circuit ]

R = 7.465k

120

R = 4057 R =

7.465

25/120

4057

273 t

393

exp

R = 15k

R = 3460 R = 15

0/80

3460

273 t

273

exp

R = 17k

R = 4016 R = 17

25/120

4016

273 t

323

exp

Part

name

Thermistor

Symbols

(functions)

TH4 (Discharge)

Notes Usage Specifications Check method

1) Detects discharge air temperature

2) Provides high-pressure protection

0°C[32°F] :698kΩ 10°C[50°F] :413kΩ 20°C[68°F] :250kΩ 30°C[86°F] :160kΩ 40°C[104°F] :104kΩ 50°C[122°F] : 70kΩ 60°C[140°F] : 48kΩ 70°C[158°F] : 34kΩ 80°C[176°F] : 24kΩ 90°C[194°F] :17.5kΩ 100°C[212°F] :13.0kΩ 110°C[230°F] : 9.8kΩ

TH2 LEV 1 is controlled based on the

TH2, TH3, and TH6 values.

TH3 (Pipe temperature)

1) Controls frequency

2) Controls defrosting during heating operation

3) Detects subcool at the heat exchanger outlet and controls LEV1 based on HPS data and TH3 data

TH7 (Outdoor temperature)

1) Detects outdoor air temperature

2) Controls fan operation

TH5 LEV2a and LEV2b are controlled

based on the 63LS and TH5 values.

Degrees Celsius Resistance

check

Degrees Celsius

Resistance check

0°C[32°F] :15kΩ 10°C[50°F] :9.7kΩ 20°C[68°F] :6.4kΩ 25°C[77°F] :5.3kΩ 30°C[86°F] :4.3kΩ 40°C[104°F] :3.1kΩ

TH6 Controls LEV1 based on TH2,

TH3, and TH6 data.

THHS

Protects inverter from overheating Degrees Celsius Inverter heat sink temperature

THBOX Control box internal temperature detection

0°C[32°F] :161kΩ 10°C[50°F] :97kΩ 20°C[68°F] :60kΩ 25°C[77°F] :48kΩ 30°C[86°F] :39kΩ 40°C[104°F] :25kΩ

HWE09060 GB

- 79 -

Page 89

[ VII Refrigerant Circuit ]

Part

name

Solenoid valve

Symbols

(functions)

SV1a Discharge-suction bypass

Notes Usage Specifications Check method

1) High/low pressure bypass at start-up and stopping, and capacity control during lowload operation

2) High-pressure-rise prevention

SV5b Heat exchanger

P250 P400 models

Controls outdoor unit heat exchanger capacity

capacity control

SV5c P350

and P400 models

SV9 High-pressure-rise prevention Open while being powered/

Linear expansion

LEV1 (SC control)

Adjusts the amount of bypass flow from the liquid pipe on the outdoor unit during cooling

valve

LEV2a LEV2b

Adjusts refrigerant flow during

heating (Refrigerant flow adjustment)

Heater CH11 Heats the refrigerant in the com-

pressor

4-way valve

21S4a Changeover between heating and

cooling

AC220-240V Open while being powered/ closed while not being powered

closed while not being powered

DC12V Opening of a valve driven by a stepping motor 0-480 pulses (direct driven type)

DC12V Opening of a valve driven by a stepping motor 1400 pulses

Cord heater AC230V P200 - P250 models 1511 Ω 35W P300 - P450 models 1176 Ω 45W

AC220-240V Dead: cooling cycle Live: heating cycle

Continuity check with a tester

Same as indoor LEV The resistance value differs from that of the indoor LEV. (Refer to the section "LEV Troubleshooti ng."(page 193 ))

Same as indoor LEV

Resistance check

Continuity check with a tester

21S4b P250 -

P400 models

21S4c P350

and P400 models

HWE09060 GB

1) Changeover between heating and cooling

2) Controls outdoor unit heat exchanger capacity

- 80 -

AC220-240V Dead: cooling cycle Outdoor unit heat exchanger capacity at 100% Live: heating cycle Outdoor unit heat exchanger capacity at 50% or heating cycle

Page 90

[ VII Refrigerant Circuit ]

273+t

R0=15k R

0/80

=3460 Rt = 15exp{3460( - )}

273

2. Indoor Unit

Part

Name

Linear expansion valve

Thermistor

Symbol

(functions)

Notes Usage Specification Check method

LEV 1) Adjusts superheat at the

indoor heat exchanger outlet during cooling

2) Adjusts subcool at the heat exchanger outlet of the indoor unit during cooling

TH1 (Suction air

Indoor unit control (ThermoON/OFF)

temperature)

TH2 (Liquid pipe temperature)

1) Indoor unit control (Frost prevention, Pre-heating standby)

2) LEV control during heating operation (subcool detection)

TH3 (Gas pipe

LEV control during cooling operation (superheat detection)

temperature)

TH4 (Outdoor air

Indoor unit control (ThermoON/OFF)

temperature)

DC12V Opening of stepping motor driving valve 0-(1400) pulses

0°C [32°F]:15kΩ 10°C [50°F] :9.7kΩ 20°C [68°F]:6.4kΩ 25°C [77°F] :5.3kΩ 30°C [86°F] :4.3kΩ 40°C [104°F] :3.1kΩ

Refer to the section "Continuity Test with a Tester". Continuity between white, red, and orange. Continuity between yellow, brown, and blue.

White

Red

Orange

Yellow

Brown Blue

Resistance check

Temperature sensor (Indoor air temperature)

Indoor unit control (ThermoON/OFF)

HWE09060 GB

- 81 -

Page 91

[ VII Refrigerant Circuit ]

- 82 -

GBHWE09060

Page 92

VIII Control

[1] Functions and Factory Settings of the Dipswitches ......................................................... 85

[2] Controlling the Outdoor Unit ............................................................................................ 92

[3] Operation Flow Chart..................................................................................................... 102

HWE09060 GB

- 83 -

Page 93

- 84 -

Page 94

[ VIII Control ]

VIII Control

[1] Functions and Factory Settings of the Dipswitches

1. Outdoor unit (1) Control board

Function according to switch setting Switch setting timing

Switch Function

OFF ON OFF ON OC OS

SWU 1-2 Unit address setting Set to 00 or 51-100 with the dial switch Before power on C C

SW1 1-10

For self-diagnosis/ operation monitoring

Centralized control switch

Deletion of connection information

Deletion of error history SW

Refer to the LED monitor display on the outdoor unit board.

Without connection to the centralized controller

With connection to the centralized controller

Anytime after power on

Before power on

Normal control Deletion Before power on

(OC) Storage of IC/ OC error history

(OC) Deletion of IC/ OC error history

Anytime after power on (When switched from OFF

(OS) Storage of OS error history

(OS) Deletion of OS error history

to ON)

After being energized and

4 Pump down mode Normal control Pump down mode

while the compressor is stopped

SW2

5- - - - -6- - - - --

Anytime af-

Forced defrost

(Note 3)

Normal control

Forced defrost starts

10 minutes after compressor startup

ter power on (When switched from OFF to ON)

Defrost timer setting

(Note 3)

50 minutes 90 minutes

Anytime after power on (When switched from OFF to ON)

9- - - - --

10 - - - - - -

Units that re-

quire switch

setting Note.2

A-

1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.

2) A: Only the switch on either the OC or OS needs to be set for the setting to be effective on both units. B: The switches on both the OC and OS need to be set to the same setting for the setting to be effective. C: The setting is effective for the unit on which the setting is made.

3) Refer to "VIII [2] Controlling the Outdoor Unit" for details.(page 92)

HWE09060 GB

- 85 -

Page 95

[ VIII Control ]

Switch Function

SW3

Units that re-

Function according to switch setting Switch setting timing

quire switch

setting Note.2

OFF ON OFF ON OC OS

Test run mode: en-

abled/disabled

Test run mode: ON/

OFF

SW3-2 disabled SW3-2 enabled Anytime after power on A -

Stops all ICs

Sends a test-run signal to all IC

After power on and when SW3-1 is on.

A-

P250

Defrost start temper-

ature

-10°C [14°F]

-5°C [23°F] Anytime after power on B B

P350 · P400

-8°C [18°F]

Defrost end temper-

ature

P250 10°C [50°F]

P350 · P400 7°C [45°F]

P250 15°C [59°F]

P350 · P400 12°C [54°F]

Anytime after power on (except during defrost operation)

5- - - - -6- - - - --

7- - - - -8- - - - --

9 Model setting

Outdoor standard static pressure

Outdoor high static pressure

Before being energized C C

10 Model setting

High static pressure 60Pa

High static pressure 30Pa

Before being energized C C

1- - - - -2- - - - --

Anytime after being energized (except during ini-

Refrigerant amount

adjustment

Normal operation mode

Refrigerant amount adjust mode

tial startup mode. Automatically cancelled

A-

60 minutes after compressor startup)

SW4

Low-noise mode/

step demand switching

Low-noise mode (Note 3)

Step demand mode Before being energized C C

5- - - - --

Cumulative com-

pressor operation time data deletion

Cumulative compressor operation time data is retained.

Cumulative compressor operation time data is deleted.

Anytime after power on (when the unit is turned on)

7- - - - -8- - - - -9- - - - --

10 - - - - - -

1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.

3) The noise level is reduced by controlling the compressor frequency and outdoor fan rotation speed. Setting of CN3D is required.(page 24)

HWE09060 GB

- 86 -

Page 96

[ VIII Control ]

Units that re-

Switch Function

Function according to switch setting Switch setting timing

quire switch

setting Note.2

OFF ON OFF ON OC OS

1 2

Model selection See the table below (Note 4) Before being energized C C

3 4

SW5

Low-noise mode

selection

Capacity priority mode (Note 3)

Low-noise mode Before being energized A -

6- - - - -7 Model selection See the table below (Note 4) Before being energized B B

8- - - - -9- - - - --

10 - - - - - -

1) Unless otherwise specified, leave the switch to OFF where indicated by "-," which may be set to OFF for a reason.

3) When set to the capacity priority mode and if the following conditions are met, the Low-noise mode will terminate, and the unit will go back into the normal operation mode. Cooling: Outside temperature is high or high pressure is high. Heating: Outside temperature is low or low pressure is low.(page 22)

4) The table below summarizes the factory settings for dipswitches SW5-1 through SW5-4, and SW5-7. The factory setting for all other dipswitches is OFF.

SW 5

Model

12347

ON ON OFF OFF ON P250 model

(2) INV board

Functions are switched with the following connector.

Connector Function

Function according to connec-

tor

Setting timing

Enabled Disabled Enabled Disabled

CN6 shortcircuit con-

nector

Enabling/disabling the following error detection functions; ACCT sensor failure (5301 Detail No. 115) ACCT sensor circuit failure

Error detection enabled

Error detection disable (No load operation is possible.)

Anytime after power on

(5301 Detail No.117) IPM open/ACCT erroneous wiring (5301 Detail No. 119) Detection of ACCT erroneous wiring (5301 Detail No.120)

CN6 short-circuit connector is mated with the mating connector. Leave the short-circuit connector on the mating connector during normal operation to enable error detection and protect the

equipment from damage.

HWE09060 GB

- 87 -

Page 97

[ VIII Control ]

P250,P500

OFF

SW1-2 SW1-3

OFF

P750

Factory setting

2. Function of the switch (Indoor unit)

(1) Dipswitches (Standard type)

1) SW1,3, 7, 8

Switch Function

Room temperature de-

tection position

Filter sign

Outdoor air intake Disabled Enabled

SW1

Remote display option Fan output Thermo-ON signal

Humidifier control

Automatic recovery after

power failure

Power reset Disabled Enabled

Capacity code

Forced Thermo-ON Disabled Forced Thermo-ON

Fan operation during de-

frost cycle

Vapor pan humidifier Not available Available

Heat dissipation 1 min. (heating only)

Automatic LEV value

conversion function

Negative 4-degree offset

(heating)

SW3

Heater (heating) Disabled Enabled

SW7

SW8

Forced Thermo-OFF

during test run

Function according to switch setting

Switch setting

timing

OFF ON OFF ON

Indoor unit return air

Filter sign 100h

SW1-2 SW1-3

During constant heating

---

- --

Refer to the table on the setting combination with SW2.

Not available Available

---

- --

OFF OFF

operation

Disabled Enabled

OFF ON

Enabled

Enabled Disabled

Built-in sensor on the re-

mote controller

1250h N/A 2500h

OFF

OFFONON

During heating opera-

3 min. 5 sec. (regardless

of the operation mode)

Disabled

tion

When the unit is

stopped (remote

controller is

switched off)

Notes

Set these switches to OFF when SWC is set to ON.

Return air temp. and preset temp. are fixed.

Set this switch to ON (disabled) on the floor-standing units.

Factory settings for these switches depend on the unit capacity. Refer to section 2).

When this switch is set to ON, external Thermo signals are not effective.

To be enabled on the indoor units in a multiple-refrigerantcircuit system.

1) The setting timings for the dipswitches 1 and 3 is when the units are stopped (remote controller is switched off). Power reset is not required.

2) The settings in the shaded areas indicate factory settings.

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Page 98

[ VIII Control ]

SW2 SW4

− 50 OFF OFF ON

− 100 ON OFF ON

No.1 100 ON OFF OFF

No.2 50 OFF OFF OFF

ON OFF

1 2 3 4 5 6 1 2 3 4 5

1 2 3 4 5

ON OFF

1 2 3 4 5 6 1 2 3 4 5

1 2 3 4 5

ON OFF

1 2 3 4 5 6

ON OFF

1 2 3 4 5 6

<Notes on capacity code and model settings> If the capacity code or model setting has been incorrectly set (e.g., when replacing the circuit board), both the indoor and outdoor units need to be power reset.

P250

P500

P750

Model System

Capacity

SW3-2 SW3-9

SW3-10

2) SW2,SW3-2,SW3-9,SW3-10,SW4

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Page 99

[ VIII Control ]

Filter sign 100h

OFF OFF

SW1-2 SW1-3

OFF

OFFONON

1250h N/A 2500h

P300,P600

OFF

SW1-2 SW1-3

OFF

P900

Factory setting

(2) Dipswitches (Fresh Air Intake type)

1) SW1,3,7,8

Switch Function

Function according to switch setting

OFF ON OFF ON

Room temperature detec-

tion position

Indoor unit return air

Filter sign

4- --

5 Remote display option

SW1

6 Humidifier control

Humidifier freezeup pro-

tection

Automatic recovery after

power failure

Fan output Thermo-ON signal

During constant heating

operation

Disabled Enabled

10 Power reset Disabled Enabled

1 Model setting Heat pump Cooling-only

2 Capacity code

Refer to the table on the setting combination with

3 Forced Thermo-ON Disabled Forced Thermo-ON

Indoor unit fan operation

during defrost cycle

OFF ON

5 Vapor pan humidifier Not available Available

SW3

6 Heat dissipation 1 min. (heating only)

Automatic LEV value con-

version function

Negative 4-degree offset

(heating)

Not available Available

Enabled

9- - -

10 - - -

1 Heater (heating) Disabled Enabled

SW7

trol indoor temp.

Return air temp. Supply air temp.

Temp. value used to con-

3- - -

4- --

1- --

SW8

2- -

Built-in sensor on the re-

mote controller

During heating opera-

tion

SW2.

3 min. 5 sec. (regardles s

of the operation mode)

Disabled

Switch setting

timing

When the unit is stopped (remote

controller is

switched off)

When indoor and outdoor units are

switched off

When the unit is stopped (remote

controller is

switched off)

Notes

When this switch is set to ON, units are forced to operate in the heating mode when the return air dry temperature is at or below 5°C[41°F].

Set these switches to OFF when SWC is set to ON.

Return air temp. and preset temp. are fixed.

Set this switch to ON (disabled) on the floor-standing models.

Factory settings for these switches depend on the unit capacity. Refer to section 2).

When this switch is set to ON, external Thermo signals are not effective.

1) The setting timings for the dipswitches 1 and 3 is when the units are stopped (remote controller is switched off). Power reset

2) The settings in the shaded areas indicate factory settings.

HWE09060 GB

is not required.

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Page 100

[ VIII Control ]

SW2 SW4

− 50 OFF OFF ON

− 100 ON OFF ON

No.1 100 ON OFF OFF

No.2 50 OFF OFF OFF

ON OFF

1 2 3 4 5 6 1 2 3 4 5

1 2 3 4 5

ON OFF

1 2 3 4 5 6 1 2 3 4 5

1 2 3 4 5

ON OFF

1 2 3 4 5 6

ON OFF

1 2 3 4 5 6

P300-F

P600-F

P900-F

Model System

Capacity

SW3-2 SW3-9

SW3-10

Fan operation on the Fresh Air Intake type units

When the return air dry temperature is 5°C [41°F] or below, units may be forced to operate in the heating mode to prevent humidifier from freezing up and to prevent cold drafts. The fan will stop when all refrigerant systems are in trouble and during the defrost cycle. Refer to the table below for how to set the related switches and for the operation patterns.

Specification SW

Notes

OFF ON

Operation

Forced heating operation/Fan operation when units are in trouble

Forced heating op-

1-7

eration is disabled.

The fan will operate

when the units are in trouble. (The fan will stop when the fan is in trouble or when there is a communication er-

Forced heating op-

eration is enabled.

The fan will not op-

erate when the units are in trouble.

When the return air dry temperature is 5°C [41°F] or below, units are forced to operate in the heating mode regardless of the mode setting to prevent cold drafts. The units will resume operation in the selected mode when the return air dry temperature reaches 6°C[43°F]. Regardless of the outside air temperature, the fan will not operate if there are any problems.

ror.)

Fan operation during defrost cycle

The fan will not op-

3-4

erate when the units in all refriger-

The fan will operate

when the units are in the defrost cycle.

This switch is set to off to prevent the humidifier from freezing up and to prevent cold drafts.

ant systems are in the defrost cycle.

1) The settings in the shaded areas indicate factory settings.

2) Turning on the fan during the defrost cycle will send cold air into the room, delay normal operation from being resumed, and

cause the room temperature to drastically drop. To avoid this, set SW3-4 to OFF.

3) The operating temperature (return air dry temperature) of the fan is 0°C [32°F] or above. If the fan is operated at the outside

temperature below 0°C [32°F], depending on the ambient air conditions, dew condensation may form on the panel surface. Use caution so that dew drips will not damage the surrounding equipments.

2) SW2,SW3-2,SW3-9,SW3-10,SW4

(3) Address switches

How to set the indoor unit addresses depends on the system. Refer to the Outdoor Unit Installation Manual and other related documents for how to set the addresses. Each address consists of two digits. (Example) To set the address to "3," set the 1's digit to "3" and leave the 10's digit to "0." To set the address to "25," set the 1's digit to "5" and the 10's digit to "2."

3. Switch functions <Remote controller> (1) MA remote controller (PAR-21MAA)

MA remote controller does not have switches. Refer to the Installation Manual for how to make the function settings.

HWE09060 GB

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Mitsubishi HWE09060 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual