Mitsubishi HWE04170 Service Manual

Page 1
Models PUHY-P850, P900, P950, P1000YSGM-A
PUHY-P1050, P1100, P1150, P1200, P1250YSGM-A
Service Handbook
AIR CONDITIONERS CITY MULTI
Page 2
Contents
1 Read Before Servicing ................................................................ 6
[2] Necessary Tools and Materials .............................................. 7
[3] Piping Materials...................................................................... 8
[4] Storage of Piping Material...................................................... 10
[5] Piping Machining .................................................................... 11
[7]
Airtightness T est
...................................................................... 13
[8] V acuuming.............................................................................. 13
[9] V acuum Drying........................................................................ 14
[10] Changing Refrigerant.............................................................. 15
[11] Remedies to be taken in case of a refrigerant leak................ 15
[12]
Characteristics of the Conventional and the New Refrigerants
.. 16
[13] Notes on Refrigerating Machine Oil........................................ 17
2 Restrictions .................................................................................. 18
[1] Restrictions on System Structure .......................................... 18
[2] Electrical Work & M-NET control............................................ 19
[3] Types of Switch Setting and Address Setting ........................ 20
[4] Examples of system connection ............................................ 23
[5] Restrictions on Refrigerant Piping Length.............................. 39
3 Components of the Outdoor Unit ................................................ 40
[1] Appearance of the Components and Refrigerant Circuit........ 40
[2] Control Box ............................................................................ 44
[3] Circuit Board .......................................................................... 45
4 Remote Controller........................................................................ 49
[1]
Functions and Specifications of MA and ME Remote Controllers
.... 49
[2] Group Setting and Interlocking Settings that are Made on
the ME Remote Controller .................................................... 50
[3]
Interlocking Setting that is Made on the MA Remote Controller
...... 53
[4] Switching to the built-in Thermo on the remote controller...... 54
5 Electrical Wiring Diagr am ............................................................ 55
[1] Compressor unit .................................................................... 55
[2] Heat exchanger unit................................................................ 56
6 Refrigerant Circuit........................................................................ 57
[1] Refrigerant Circuit Diagram.................................................... 57
[2] Functions of Principal Parts .................................................... 58
7 Control.......................................................................................... 61
[1] Dip Switch Functions and Their Factory Settings .................. 61
[2] Controlling the Outdoor Unit .................................................. 66
[3] Operation Flow Chart ............................................................ 76
8 Test Run ...................................................................................... 81
[1] Check Items before Test Run.................................................. 81
[2] Test Run Method .................................................................... 81
[3] Operating Characteristics and Refrigerant Amount................ 82
[4] Adjustment and Judgment of Refrigerant Amount ................ 82
[5] Refrigerant Volume Adjustment Mode Operation .................. 84
[6] Symptoms that do not Signify Problems ................................ 86
[7]
Standard Operation Data (Reference Data)
.............................. 87
9 Troubleshooting............................................................................ 93
[1] Check Code List .................................................................... 93
[2] Responding to Error Display on the Remote Controller ........ 97
[3] Investigation of Transmission Wave Shape/Noise.................. 130
[4] Troubleshooting of Principal Parts .......................................... 133
[6] Compressor Replacement Instructions .................................. 151
[7] Collecting the Cooling Liquid from the Accumulator .............. 152
0 LED display.................................................................................. 153
[1] LED Monitor Display .............................................................. 153
Page 3
Safety Precautions
Symbols used in the text
Warning:
Failure to follow all instructions may result in serious personal injury or death.
Caution:
Failure to follow all instructions may result in personal injury or damage to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided. : Indicates that important instructions must be followed. : Indicates a part which must be grounded. : Beware of electric shock (This symbol is displayed on the main unit label.) <Color : Yellow>
Warning : Carefully read the labels affixed to the main unit.
Before installing the unit, be sure to carefully read all of the following safety precautions. These precautions provide important information regarding safety. Be sure to follow them to ensure safety.
After reading this handbook, hand it over to those who will be using the unit. The user of the unit should keep this manual at hand and make it available to those who will be performing repairs or relocating the unit. Also, make it available to the new user when the user changes hands.
Be sure to carefully follow each step in this handbook when installing the unit.
Improper installation may result in water leak,
electric shock, smoke or fire.
Securely attach the terminal cover (panel) on the unit.
If installed improperly, dust and/or water may enter
the unit and present a risk of electric shock, smoke, or fire.
Only use Refrigerant R410A as indicated on the unit when installing or relocating the unit.
The use of any other refrigerant or an introduction of
air into the unit circuit may cause the unit to run an abnormal cycle and cause the unit to burst.
Do not make any changes or modifications to the unit. In case of problems, consult the dealer.
If repairs are not made properly, the unit may leak
water and present a risk of electric shock, or it may produce smoke or cause fire.
Have all electrical work performed by a licensed electrician according to the local regulations and the instructions given in this manual. Secure a circuit designated exclusively to the unit.
Improper installation or a lack of circuit capacity may
cause the unit to malfunction or present a risk of electric shock, smoke, and fire.
Have the unit professionally installed.
Improper installation by an unqualified person may
result in water leak, electric shock, or fire.
Only use specified cables for wiring. Securely connect each cable, and make sure that the cables are not straining the terminals.
Cables not connected securely and properly may
generate heat and cause fire.
Place the unit on a stable, level surface that withstands the weight of the unit to prevent the unit from tipping over or falling causing injury as a result.
Take necessary safety measures against typhoons and earthquakes to prevent the unit from falling over.
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Page 4
When relocating the air conditioner, consult the dealer or a specialist.
Improper installation may result in water leak,
electric shock, or fire.
Consult the dealer for necessary measures to take.
After completing the service work, check for a refrigerant gas leak.
If leaked gas refrigerant is exposed to a heart
source such as fan heater, stove, and electric grill, noxious gases may form.
In the event of a refrigerant gas leak, provide adequate ventilation to the room.
If leaked refrigerant gas is exposed to a heat source,
noxious gases may form.
With All-Fresh type air conditioners, outdoor air may be directly blown into the room upon thermo off. Take this into consideration when installing the unit.
Direct exposure to outdoor air may present a health
hazard, and it may also cause food items to deteriorate.
When installing the unit in a small room, safeguard against hypoxia that results from leaked refrigerant reaching the threshold level.
Do not touch the fins on the heat exchanger with bare hands: they are sharp and dangerous.
Precautions for Handling Units for Use with R410A
Caution
Warning : Carefully read the labels affixed to the main unit.
Do not try to defeat the safety features of the devices, and do not change the settings.
Defeating the safety features on the unit such as the
pressure switch and temperature switch or using parts other than those specified by Mitsubishi Electric may result in fire or explosion.
Use refrigerant pipes made of C1220 phosphorus deoxidized copper categorized under H3000 (Copper and Copper Alloy Seamless Pipes and Tubes), a standard set by JIS. Keep the inner and outer surfaces of the pipes clean and free of contaminants such as sulfur, oxides, dust/dirt, shaving particles, oils, and moisture.
Contaminants inside the refrigerant piping will cause
the refrigerant oil to deteriorate.
Do not use the following tools that have been used with the conventional refrigerants.Prepare tools that are for exclusive use with R410A. (Gauge manifold, charging hose, gas leak detector, reverse-flow check valve, refrigerant charge base, vacuum gauge, and refrigerant recovery equipment.)
If refrigerant and /or refrigerant oil left on these tools
are mixed in with R410A, or if water is mixed with R410A, it will cause the refrigerant to deteriorate.
Since R410A does not contain chlorine, gas-leak
detectors for conventional refrigerators will not work.
Only use specified parts.
Have the unit professionally installed.
Improper installation may cause water leak, electric shock, smoke, or fire.
Use a vacuum pump with a reverse-flow-check valve.
If other types of valves are used, the vacuum pump
oil will flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate.
Do not use the existing refrigerant piping
The old refrigerant and refrigerator oil in the existing
piping contain a large amount of chlorine, which will cause the refrigerator oil in the new unit to deteriorate.
R410A is a high-pressure refrigerant, and the use of
the existing piping may result in bursting.
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Page 5
Before Installing the Unit
Warning
Caution
Store the piping to be used during installation indoors, and keep both ends of the piping sealed until immediately before brazing. (Keep elbows and other joints wrapped in plastic.)
If dust, dirt, or water enters the refrigerant cycle, it
may cause the oil in the unit to deteriorate or may cause the compressor to malfunction.
Use a small amount of ester oil, ether oil, or alkylbenzene to coat flares and flange connections.
A large amount of mineral oil will cause the
refrigerating machine oil to deteriorate.
Do not use a charging cylinder.
The use of charging cylinder will change the
composition of the refrigerant and lead to power loss.
Exercise special care when handling the tools.
An introduction of foreign objects such as dust, dirt,
or water into the refrigerant cycle will cause the refrigerating machine oil to deteriorate.
Only use R410A refrigerant.
The use of refrigerants containing chlorine (i.e. R22)
will cause the refrigerant to deteriorate.
Use liquid refrigerant to charge the system.
Charging the unit with gas refrigerant will cause the
refrigerant in the cylinder to change its composition and will lead to a drop in performance.
Do not install the unit in a place where there is a possibility of flammable gas leak.
Leaked gas accumulated around the unit may start a
fire.
Do not use the unit to preserve food, animals, plants, artifacts, or for other special purposes.
The unit is not designed to provide adequate
conditions to preserve the quality of these items.
When installing the unit in a hospital, take necessary measures against noise.
High-frequency medical equipment may interfere
with the normal operation of the air conditioning unit or the air conditioning unit may interfere with the normal operation of the medical equipment.
Do not use the unit in an unusual environment.
The use of the unit in the presence of a large
amount of oil, steam, acid, alkaline solvents, or special types of sprays may lead to a remarkable drop in performance and/or malfunction and presents a risk of electric shock, smoke, or fire.
The presence of organic solvents, corroded gas
(such as ammonia, sulfur compounds, and acid) may cause gas or water leak.
Do not place the unit on or over things that may not get wet.
When humidity level exceeds 80% or when the
drainage system is clogged, indoor units may drip water.
Installation of a centralized drainage system for the
outdoor unit may also need to be considered to prevent water drips from the outdoor units.
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Page 6
Before Installing (Relocating) the Unit or Performing Electric Work
Caution
Do not spray water on the air conditioners or immerse the air conditioners in water.
Water on the unit presents a risk of electric shock.
Install a breaker for current leakage at the power source to avoid the risk of electric shock.
Without a breaker for current leakage, there is a risk
of electric shock, smoke, or fire.
Use wires that are specified in the installation manual.
The use of other types of wires presents a risk of
electrical current leak, electric shock, smoke, or fire.
Periodically check the platform on which the unit is placed for damage to prevent the unit from falling.
If the unit is left on a damaged platform, it may
topple over, causing injury.
Ground the unit.
Do not connect the grounding on the unit to gas
pipes, water pipes, lightning rods, or the grounding terminals of telephones. Improper grounding presents a risk of electric shock, smoke, fire, or the noise caused by improper grounding may cause the unit to malfunction.
Use breakers and fuses (electrical current breaker, remote switch <switch + Type-B fuse>, molded case circuit breaker) with a proper current capacity.
The use of large-capacity fuses, steel wire, or
copper wire may damage the unit or cause smoke or fire.
When installing draining pipes, follow the instructions in the manual, and make sure that they properly drain water so as to avoid dew condensation.
If not installed properly, they may cause water leaks
and damage the furnishings.
Make sure the wires are not subject to tension.
If the wires are too taut, they may break or generate
heat and/or smoke and cause fire.
Exercise caution when transporting products.
Do not try to move equipments over 20kg (approx. 44 lbs.) alone.
Do not use the PP bands used on some packages for transportation.
Wear protective gloves to avoid injury caused by touching the fins on the heat exchanger with bare hands.
When using a suspension bolt to transport the heat­source unit, use a four-point suspension. A three­point suspension does not provide adequate stability and presents a risk of accidents.
Properly dispose of the packing materials.
Things such as nails and wood pieces may be included in the package. Dispose of them properly to prevent injury.
Plastic bags present a choking hazard to children. Tear up the plastic bags before disposing of them to prevent accidents.
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Page 7
Before the Test Run
Caution
Turn on the unit at least 12 hours before the test run.
Keep the unit on throughout the season. Turning the unit off during the season may cause problems.
Do not turn off the power immediately after stopping the unit.
Allow for at least five minutes before turning off the unit; otherwise, the unit may leak water or experience other problems.
Do not operate the unit without panels and safety guards in their proper places.
They are there to keep the users from injury from accidentally touching rotating, high-temperature, or high-voltage parts.
Do not touch the refrigerant pipes with bare hands during and immediately after operation.
Depending on the state of the refrigerant in the system, certain parts of the unit such as the pipes and compressor may become very cold or hot and may subject the person to frost bites or burning.
Do not operate switches with wet hands to avoid electric shock.
Do not operate the unit without air filters.
Dust particles in the air may clog the system and cause malfunction.
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Page 8
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¡¡
Read Before Servicing
[1] Items to Be Checked
1. Verify the type of refrigerant used by the unit to be serviced.
Refrigerant Type : R410A
2. Check the symptom exhibited by the unit to be serviced.
Look in this service handbook for symptoms relating to the refrigerant cycle.
3. Be sure to carefully read the Safety Precautions at the beginning of this document.
4. Prepare necessary tools: Prepare tools exclusive for use with each refrigerant type.
Refer to P7 for more information.
5. If the refrigerant circuit is opened (to repair a gas leak etc.), the dryer needs to be replaced.
Only use the dryer designed specifically for Citi Multi YGM-A.The use of other dr yers may result in malfunctions. Replace the dryer after completing all the repairs on the refrigerant circuit.
(If left exposed to air, the dryer will absorb moisture. Replace the dr yer as quickly as possible after removing the old one.)
When all of the following conditions are met, the replacement of drier is not necessary.
(1) Do not leave the refrigerant circuit longer than 2 hours. (2) Cover the opening end with a cap or tape to keep moisture from entering. (3) Also cover the opening end of the new part with a cap or tape (4) Do not perform the task in the rain. (5) Evacuate the refrigerant circuit as specified.
6. Verification of the connecting pipes:Verify the type of refrigerant used for the unit to be moved or replaced.
• Use pipes made of phosphorus deoxidized copper.Keep the inner and outer surfaces of the pipes clean and
free of contaminants such as sulfur, oxides, dust/dirt, shaving par ticles, oils, and moisture.
• Contaminants inside the refrigerant piping will cause the refrigerant oil to deteriorate.
7. If there is a gas leak or if the remaining refrigerant is exposed to an open flame, a noxious gas hydrofluoric acid may form. Keep workplace well ventilated.
CAUTION
1. Install new pipes immediately after removing old ones to keep moisture out of the refrigerant circuit.
2. Chloride in some types of refrigerants such as R22 will cause the refrigerating machine oil to deteriorate.
Page 9
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[2] Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit.
[Necessary tools for use with R410A (Adaptability of tools that are for use with R22 and R407C)]
1. To be used exclusively with R410A (not to be used if used with R22 or R407C)
Tools/Materials NotesUse
Gauge Manifold Charging Hose Refrigerant Recovery Equipment Refrigerant Cylinder
Refrigerant Cylinder Charging Port Flare Nut
Evacuating, refrigerant charging Evacuating, refrigerant charging Refrigerant recovery Refrigerant charging
Refrigerant charging Connecting the unit to piping
5.09MPa on the High-pressure side. Hose diameter larger than the conventional ones.
Write down the refrigerant type. Pink in color at the top of the cylinder. Hose diameter larger than the conventional ones. Use Type-2 Flare nuts. (That are in compliance with JIS B 8607).
2.Tools and materials that may be used with R410A with some restrictions
Tools/Materials NotesUse
Gas leak detector Vacuum Pump
Flare Tool
Refrigerant Recovery Equipment
Detection of gas leaks Vacuum drying
Flare machining of piping
Recovery of refrigerant
The ones for HFC type refrigerant may be used. May be used if a reverse flow check adaptor is attached. Changes have been made in the flare machining dimension. Refer to the next page. May be used if designed for use with R410A.
3. Tools and materials that are used with R22 or R407C that can also be used with R410A
Tools/Materials NotesUse
Vacuum Pump with a Check valve Bender Torque Wrench
Pipe Cutter Welder and Nitrogen Cylinder Refrigerant Charging Meter Vacuum Gauze
Vacuum drying Bending pipes Tightening flare nuts
Cutting pipes Welding pipes Refrigerant charging Checking vacuum degree
Only ø 12.70 (1/2) and ø 15.88 (5/8) have a larger flare machining dimension.
4. Tools and materials that must not be used with R410A
Tools/Materials NotesUse
Charging Cylinder Refrigerant Charging Must not be used with R410A-type units.
Tools for R410A must be handled with special care; keep moisture and dust from entering the cycle.
Page 10
Type-O pipes Soft copper pipes (annealed copper pipes)
They can be bent easily with hands.
Type-1/2H pipes Hard copper pipes (straight pipes)
Stronger than type-O pipes of the same radial thickness.
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[3] Piping Materials
NOOK
New Piping Existing Piping
Do not use the existing piping!
<Types of copper pipe>
The distinction between type-O and type-1/2H pipes is made based on the strength of the pipes themselves.
Type-O pipes are soft and can easily be bent with hands.
Type-1/2H pipes are considerably stronger than type-O pipes of the same radial thickness.
Use pipes made of phosphorus deoxidized copper. Since the operation pressure of the units that use R410A is higher than that of the units for use with R22, use pipes with 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.)
Maximum Operation Pressure Applicable Refrigerants
3.45 MPa
4.30 MPa
R22, R407C etc. R410A
<Types of Copper Pipes (Reference)>
Use pipes that meet the local standards.
Type-O pipes
Type-1/2H or
H pipes
Size(mm) Size(inch) Radial Thickness(mm) Type
ø 6.35 ø 9.52
ø 12.7 ø 15.88 ø 19.05
ø 22.2
ø 25.4 ø 28.58 ø 31.75 ø 34.93
1/4 3/8 1/2 5/8 3/4 7/8
1 1 1/8 1 1/4 1 3/8
0.8t
0.8t
0.8t
1.0t
1.0t
1.0t
1.0t
1.0t
1.1t
1.2t
<Piping Materials/Radial Thickness>
Although it was possible to use type-O for pipes with a size of up to ø19.05 (3/4”) with conventional refriger-
ants, use type-1/2H pipes for units that use R410A.(Type-O pipes may be used if the pipe size is
ø19.05 and
the radial thickness is 1.2t.)
The table shows the standards in Japan. Using this table as a reference, choose pipes that meet the local
standards.
Page 11
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Radial thicknessand Refrigerant Typesare indicated on the insulation material on the piping materials for the new refrigerant.
Indication of the radial thickness (mm) Indication of the refrigerant type
Radial thickness Symbols
0.8
1.0
08 10
Refrigerant type Symbol Type1 R22, R407C Type2 R410A
1 2
<Example of the symbols indicated on the insulation material>
The type of piping materials can also be found on the package. <Example of a label found on the package>
~08-2~
Appears every 1 m
2 : common to type 1 and type 2 Refrigerant Type : R22,R407C,R410A Bore diameter and radial thickness of the copper piping : 9.520.8, 15.881.0
<Indication of the radial thickness and refrigerant type on the piping materials>
The flare machining dimensions for units that use R410A is larger than those for units that use R22 in order to increase air tightness.
If a clutch type flare tool is used to machine flares on units that use R410A, make the protruding part of the pipe between 1.0 and 1.5mm. Copper pipe gauge for adjusting the length of pipe protrusion is useful.
Flare Machining Dimension(mm)
External dimension of pipes
Size
Dimension A
R410A
ø 6.35 ø 9.52
ø 12.7 ø 15.88 ø 19.05
1/4 3/8 1/2 5/8 3/4
9.1
13.2
16.6
19.7
24.0
R22
9.0
13.0
16.2
19.4
23.3
Dimension A
<Flare Machining (type-O and OL only)>
Type-2 flare nuts instead of type-1 s are used to increase the strength.The size of some of the flare nuts have also been changed.
Flare nut dimension(mm)
External dimension of pipes
Size
Dimension B
R410A(Type2)
ø 6.35
ø 9.52
ø 12.7 ø 15.88 ø 19.05
1/4” 3/8” 1/2” 5/8” 3/4”
17.0
22.0
26.0
29.0
36.0
R22(Type1)
17.0
22.0
24.0
27.0
36.0
Dimension B
<Flare Nut>
The table shows the standards in Japan. Using this table as a reference, choose pipes that meet the local
standards.
Page 12
Store the pipes to be used indoors. (Warehouse at site or owners warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate.
Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and Ts in plastic bags for storage.
The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure. Piping materials must be stored with more care than with the conventional refrigerant pipes.
OK
OK
NO
NO
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[4] Storage of Piping Material
1. Storage location
2. Pipe sealing before storage
Page 13
Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.
Reason :
1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside.
Notes :
Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure.
Do not use oils other than ester oil, ether oil or alkylbenzene.
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[5] Piping Machining
Page 14
No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit.
Example : Inner state of brazed section
When non-oxide brazing was not used When non-oxide brazing was used
Items to be strictly observed :
1. Do not conduct refrigerant piping work outdoors on a rainy day.
2. Apply non-oxide brazing.
3. Use a brazing material (BCuP-3) which requires no flux when brazing between copper pipes or between a copper pipe and copper coupling.
4. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends of them.
Reasons :
1. The new refrigerant oil is 10 times more hyg roscopic than the conventional oil. The probability of a machine failure if water infiltrates is higher than with conventional refrigerant oil.
2. A flux generally contains chlorine. A residual flux in the refrigerant circuit may generate sludge.
Note :
Commercially available antioxidants may have adverse effects on the equipment due to its residue, etc. When applying non-oxide brazing, use nitrogen.
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[6] Brazing
Page 15
No changes from the conventional method. Note that a refrigerant leakage detector for R22 or R407C cannot detect R410A leakage.
Halide torch R22 or R407C leakage detector
Items to be strictly observed :
1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipments airtightness, taking temperature variations into account.
2. When investigating leakage locations using a refrigerant, be sure to use R410A.
3. Ensure that R410A is in a liquid state when charging.
Reasons :
1. Use of oxygen as the pressurized gas may cause an explosion.
2. Charging with R410A gas will lead the composition of the remaining refrigerant in the cylinder to change and this refrigerant can then not be used.
Note :
A leakage detector for R410A is sold commercially and it should be purchased.
1. Vacuum pump with check valve A vacuum pump with a check v alve is required to prevent the v acuum pump oil from flowing back into the refrigerant circuit when the vacuum pump power is turned off (power failure). It is also possible to attach a check valve to the actual vacuum pump afterwards.
2. Standard degree of vacuum for the vacuum pump Use a pump which reaches 65Pa or below after 5 minutes of operation. In addition, be sure to use a vacuum pump that has been properly maintained and oiled using the specified oil. If the vacuum pump is not properly maintained, the degree of vacuum may be too low.
3. Required accuracy of the vacuum gauge Use a vacuum gauge that can measure up to 650Pa. Do not use a general gauge manifold since it cannot measure a vacuum of 650Pa.
4. Evacuating time
Evacuate the equipment for 1 hour after 650Pa has been reached.
After envacuating, leave the equipment for 1 hour and make sure the that vacuum is not lost.
5. Operating procedure when the vacuum pump is stopped In order to prevent a backflow of the vacuum pump oil, open the relief valve on the vacuum pump side or loosen the charge hose to drawn in air before stopping operation. The same operating procedure should be used when using a vacuum pump with a check valve.
NO
NO
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[7] Airtightness Test
[8] Vacuuming
Page 16
Recommended vacuum gauge : ROBINAIR 14010 Thermistor Vacuum Gauge
1. Vacuum pump with reverse-flow check valve (Photo 1)
To prevent vacuum pump oil from flowing back into the refrigerant circuit upon turning off the vacuum pumps power source, use a vacuum pump equipped with a reverse flow check valve. A check valve may also be added to the vacuum pump currently in use.
2. Standard of vacuum degree (Photos 1 and 2)
Use a vacuum pump that shows a vacuum degree of 65Pa or less after 5 minutes of operation. Use a pump well­maintained with an appropriate lubricant.
3. Required precision of vacuum gauge
Use a vacuum gauge that registers a vacuum degree of 650Pa and measures at intervals of 130Pa. (A recommended vacuum gauge is shown in Photo 2.) Do not use a vacuum gauge that does not register a vacuum degree of 650Pa.
4. Evacuation time
After the vacuum gauge has registered the vacuum degree of 650Pa, evacuate for 1 hour. (A thorough vacuum drying removes moisture in the pipes.)
Verify that the vacuum degree has not risen by more than 130Pa 1 hour after evacuation. A rise by less than 130Pa is acceptable.
If it has exceeded by more than 130Pa, conduct vacuuming following the instructions in the 6. Special vacuum drying section.
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 650Pa or lower degree of vacuum cannot be attained after 3 hours of evacuation, it is likely that water has penetrated the system or that there is a leak. When water infiltration is suspected, vacuum with nitrogen gas.
After breaking the vacuum, pressurize the system with nitrogen gas to a degree of 0.05MPa, and conduct an evacuation
again. Repeat it until 650Pa or lower degree of vacuum is attained or the vacuum pressure rise will be lost.
Only use nitrogen gas for vacuum breaking. (Use of oxygen may cause an explosion.)
Photo 1 15010H Photo 2 14010
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[9] Vacuum Drying
Page 17
R410A must be in a liquid state when charging.
For a cylinder with a syphon attached For a cylinder without a syphon attached
Cylinder color identification R407C-Gray Charged with liquid refrigerant
R410A-Pink
Reasons :
1.
Note :
In the case of a cylinder with a syphon, liquid R410A is charged without turning the cylinder up side down. Check the type of cylinder before charging.
Cylin-
der
Cylin-
der
Valve
Valve
Liquid
Liquid
R410A is a pseudo-azeotropic refrigerant (boiling point R32 = -52˚C, R125 = -49˚C) and can roughly be handled in the same way as R22; however, be sure to fill the refrigerant from the liquid side, for doing so from the gas side will somewhat change the composition of the refrigerant in the cylinder.
When refrigerant leaks, additional refrigerant may be charged. (Add the refrigerant from the liquid side.) Refer to 9-[5].
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[10] Changing Refrigerant
[11] Remedies to be taken in case of a refrigerant leak
Page 18
Composition (wt%) Type of refrigerant
Chloride Safety Class Molecular Weight Boiling Point Steam Pressure (25
˚C,MPa)(gauge)
Saturated Steam Density (25
˚C,kg/m3) Flammability Ozone Depletion Coefficient (ODP)1 Global Warming Coefficient (GWP)2 Refrigerant charging method Addition of refrigerant in case of a leak
R410A
R32/R125
(50/50)
Simulated azeotropic
refrigerant
Not contained
A1/A1
72.6
-51.4
1.557
64.0
Non-flammable
0
1730
Liquid charging
Possible
R407C
R32/R125/R134a
(23/25/52)
Non-azeotropic
refrigerant
Not contained
A1/A1
86.2
-43.6
0.9177
42.5
Non-flammable
0
1530
Liquid charging
Possible
New Refrigerant
(HFC system)
Conventional Refrigerant
(HCFC system)
R22 R22
(100)
Single refrigerant
Contained
A1
86.5
-40.8
0.94
44.4
Non-flammable
0.055 1700
Gas charging
Possible
1: When CFC11 is used as a reference 2: When CO
2 is used as a reference
- 16 -
[12] Characteristics of the Conventional and the New Refrigerants
1. Chemical property
As with R22, the new refrigerant (R410A) is low in toxicity and a chemically stable non-flammable refrigerant. However, because the specific gravity of steam is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia. Also, leaked refrigerant exposed directly to an open flame will generate noxious gasses.Use the unit in a well-ventilated room.
R410A
MPa
0.30
0.70
1.34
2.31
3.73
4.17
-20 0 20 40 60 65
R407C
MPa
0.18
0.47
0.94
1.44
2.44
2.75
R22
MPa
0.14
0.40
0.81
1.44
2.33
2.60
Pressure (gauge)
Temperature (
˚C)
3. Pressure Characteristics
The pressure in the units that use R410A is 1.6 times as great as that in the units that use R22.
2. Refrigerant Composition
Because R410A is a simulated azeotropic refrigerant, it can be handled in almost the same manner as a single refrigerant such as R22. However, if the refrigerant is removed in the vapor phase, the composition of the refriger ant in the cylinder will somewhat change. Remove the refrigerant in the liquid phase.Additional refr igerant may be added in case of a refrigerant leak.
Page 19
- 17 -
Refrigerant Refrigerating machine oil
R22 R407C R410A
Mineral oil
Ester oil Ester oil
[13] 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 refrigerant system. Please note that the ester oil sealed in the unit is not the same as commercially available ester oil.
Cause Symptom
Clogged expansion valve and capillary Poor cooling performance Compressor overheat Poor motor insulation Motor burning Coppering of the orbiting part Locking Burning in the orbiting part
Expansion valve/capillary Poor cooling performance Drier clogging Compressor overheat
Burning in the orbiting part Expansion valve and capillary clogging Poor cooling performance Compressor overheat Burning in the orbiting part
Effects on the refrigeration cycle
Sludge formation Generation of acid Oxidization Oil degradation
Water infiltration
Air infiltration
Infiltration
of
contaminants
Dust, dirt
Mineral oil etc.
Expansion valve and capillary freeze
Hydrolysis
Oxidization
Adhesion to expansion valve and capillary
Infiltration of contaminants into the compressor
Sludge formation and adhesion
Oil degradation
2. Effects of the Contaminants in the System
Refrigerating machine oil used in the HFC system must be handled more carefully than conventional mineral oils. The table below shows the effects of air, moisture, and contaminants in the refrigerating machine oil on the refrig­eration cycle.
“ Contaminants is defined as moisture, air, process oil, dust/dirt, the wrong types of refrigerant and refrigerat-
ing machine oil.
<The Effects of Air,Moisture, and Contaminants in the Refrigerating Machine Oil on the Refrigeration Cycle.>
Page 20
- 18 -
Restrictions
[1] Restrictions on System Structure
1. Indoor unit combination
Outdoor unit
model
The indoor unit model that can be connected to this unit is shown below.
Connectable
indoor unit model
total capacity
Number of
connectable
indoor units
Connectable
unit model
P850 type
425
~1105
450~1170
475~1235
500~1300
525~1365
550~1430
575~1495
600~1560
625~1625
P20~P500 type
Indoor units of
R410A series
P900 type
P950 type
P1000 type
P1050 type
P1100 type
P1150 type
P1200 type
P1250 type
2
~42 units
1
~42 units
Notes:
1.
Connectable indoor unit model total capacity is the total sum of the numbers of the indoor unit model.
2. When the connectable indoor unit model total capacity exceeds the outdoor unit capacity, performance of each
indoor unit will be lower than the rated performance during simultaneous operation of indoor and outdoor units. Select indoor units within the capacity of the outdoor unit.
Units in the system
Main unit Sub unit
PUHY-P450YMM-A
PUHY-P400YSM-A Main unit Sub unit
PUHY-P500YMM-A
PUHY-P400YSM-A Main unit Sub unit
PUHY-P550YMM-A
PUHY-P400YSM-A Main unit Sub unit
PUHY-P600YMM-A
PUHY-P400YSM-A Main unit Sub unit
PUHY-P650YMM-A
PUHY-P400YSM-A Main unit Sub unit
PUHY-P450YMM-A
PUHY-P650YSM-A Main unit Sub unit
PUHY-P500YMM-A
PUHY-P650YSM-A Main unit Sub unit
PUHY-P550YMM-A
PUHY-P650YSM-A Main unit Sub unit
PUHY-P600YMM-A
PUHY-P650YSM-A
Page 21
- 19 -
OK NO
Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring
regulations, and guidance of each electric power company.
Wiring for control (hereinafter referred to as transmission line) shall be (5cm or more) apart from power source wiring so
that it is not influenced by electric noise from power source wiring. (Do not insert transmission line and power source wire in the same conduit.)
Be sure to provide designated grounding work to outdoor unit.Give some allowance to wiring for electrical part box of indoor and outdoor units, because the box is sometimes removed
at the time of service work.
Never connect 380~415V(220~240V )power source to terminal block of transmission line.If connected,electrical parts
will be burnt out
Use 2-core shield cable for transmission line. If transmission lines of different systems are wired with the same multiple-
core cable, the resultant poor transmitting and receiving will cause erroneous operations.
Outdoor
unit
Indoor unit
Remote
controller
2-core cable
2-core cable
Outdoor
unit
Remote
controller
Indoor unit
Multiple-
core cable
Type of cable
Cable diameter
Remarks
Sheathed 2-core cable (unshielded) CVV
0.3
~ 1.25mm
2
(0.75 ~ 1.25mm2) 1
More than 1.25mm
2
Shielding wire (2-core) CVVS or CPEVS
When 10m is exceeded, use cables with the same specification as transmission cables.
0.3 ~ 1.25mm
2
(0.75 ~ 1.25mm2) 1 Max length : 200m
Transmission cables M-NET Remote controller cables MA Remote controller cables
CVVS : PVC insulated PVC jacketed shielded control cable CPEVS : PE insulated PVC jacketed shielded communication cable CVV : PV insulated PVC sheathed control cable
1 Connected with simple remote controller.
[2] Electrical Work & M-NET control
1. Attention
2. Types of control cable
Page 22
00
00
101
Main
00
201 201 201 202
000
247
Address (1) setting varies depending on the system configuration. See “[3] Examples of system connection” section for details.
Unit or controller Symbol
Address
Setting method
setting range
Indoor unit Main/sub units IC
Lossnay LC M-NET
remote controller
Main remote controller RC
Sub remote controller RC
MA remote controller MA
Outdoor unit OC
System controller
Group remote controller GR, SC System remote controller SR, SC ON/OFF remote controller AN, SC
ST, SCSchedule timer (for M-NET)
Centralized controller TR, SC (Note 5)
LM adapter SC
0, 01~50 (Note 1)
101~150
151~200
(Note 2)
0, 51~100
(Note 1, 3, 4)
0, 52~100
(Note 3, 4)
201~250 201~250 201~250 201~250
0, 201~250
201~250
Notes:
Factory
setting
Type and method of switch setting
Switch setting vary depending on the system configuration. Make sure to read “[3] Examples of system connection” before conducting electrical work. Turn off the power before setting the switch. Operating the switch while the unit is being powered will not change the setting, and the unit will not properly function.
1. Address setting is not required for a single refrigerant system (with a few exception).
2. When setting M-NET remote controller address to “200,” make it “00.”
3. When setting the outdoor unit and outdoor auxiliary unit address to “100,” make it “50.”
4. When an address in a system overlapped with the outdoor unit or BC controller (Main) address of other refrigerant system, choose an another address within theset range that is not in use (with a few exceptions).
5. When controlling the K-control units; (1) A K-transmission converter (Model name: PAC-SC25KA) is required. To set the address for the K-transmission converter,
set it to thelowest address of the K-control unit to be controlled + 200.
(2) Set the address of the system controller (G-50A) to “0.” The K-control unit can only be controlled by the system controller
with theaddress “0.”
(3) To control both K-control unit and M-NET model unit, make the address of the K-control unit larger than that of the indoor
unit of M-NET model. Group-register on the system controller so that the group No. and the lowest address of the K-controlled indoor units belonging to thegroup will be identical.
6. In case of P700~P800YSGM-A, the compressor unit and the heat exchange unit exist. In case of P850~P1250YSGM-A, the main unit and the sub unit exist.
7. Only in case of R2 system, the BC controller exits.
Use the address that equals the sum of the smallest indoor unit address in the same refrigerant system and 50.
Use the address that equals the sum of the smallest address of the indoor unit out of all the indoor units that are connected to the BC controller and 50. When a sub BC controller is connected, the automatic start up function will not be available.
Auxiliary units
Sub unit
BC controller (Sub)
OS
BC
BS
Use the address that equals the sum of the address of the outdoor unit in the same refrigerant system and 1.
BC controller (Main)
Choose any number within the range of addresses shown left. However when using with the upper SC setting, or wishing to control the k-control units, set to “0.”
Assign the smallest address to the indoor unit to become the main unit within the same group, and then use sequential numbers to assign an address to all the indoor units in the group. (Note 5) If applicable, set the sub BC controllers in an R2 system in the following order:
(1)
Indoor unit to be connected to the main BC controller
(2)
Indoor unit to be connected to No.1 sub BC controller
(3)
Indoor unit to be connected to No.2 sub BC controller
Set the address so that (1) < (2) < (3) Assign any unused address after setting all indoor units.
Set to the lowest address of the indoor main unit within the same group + 150.
Set to the lowest No. of the group to be controlled + “200.”
Set to the lowest No. of the group desired tobe controlled + “200.”
Choose any number within the range of addresses shown left.
Choose any number within the range of ad-dresses shown left.
Choose any number within the range of addresses shown left.
Set to the lowest address of the indoor main unit within the same group + 100.
No address setting required. (When operating with 2 remote controllers, the main/sub selector switch must be set.
- 20 -
[3] Types of Switch Setting and Address Setting
1. Switch setting
2. Address setting
Page 23
- 21 -
System Configuration
Single refrigerant system
___
_
Multiple refrigerant system
Connection with the system controller
Power supply unit for the transmission lines
Unnecessary
Unnecessary (Note2) (Supplied from the outdoor unit)
Applicable
Grouping operation of different refrigerant systems
n/a
applicable
applicable // n/a
applicable // n/a
applicable // n/a
The setting of the power supply selecting connector
Use CN41 as is (Factory setting)
Replace the CN41 with CN40 on only one of the outdoor units.
Connect the S terminal of the TB7 (terminal block on the outdoor unit) on the outdoor unit whose
CN41 was replaced with CN40 to the earth terminal of the electric box.
Use CN41 as is (Factory setting)
n/a
Connected with the indoor units
Connected with the centralized system
Notes:
1. Will limit the total connectable units in the refrigerant system.
2. The need for a power supply unit for the transmission lines depends on the system configuration. Refer to “ DATA BOOK ” for more details.
Setting the power supply selecting connector for the outdoor unit (Factory setting: CN41 is connected.)(2)
System configuration Setting of the centralized controller switch (SW 2-1) Connection system with the system controller n/a Leave it to OFF. (Factory setting) Connection system with the system controller applicable (Note 1) ON
Note:
1. When connecting only the LM adapter, leave SW2-1 to OFF.
Note:
1.
Refer to section 7 [2] 12. Demand control for detailed information on demand control settings.
Setting the centralized control switch on the outdoor unit (factory setting: SW2-1 OFF )(3)
Category
Output
Input
Usage
Cooling operation is disabled (thermo OFF) by the external input to the outdoor units.
Can be used as an on-demand control for each refrigerant
system.
Quiet operation of outdoor units is run with an external input to the outdoor units. (Night mode can be run under the following conditions: Outdoor air temperature below 30
˚C when running a cooling operation
and above 3˚C when running a heating operation.) Forces the outdoor units to run a fan operation by receiving the
snow signal from the snow sensor. The operation mode can be switched between cooling and heating with an external input to the outdoor units.
Outdoor units signal output
Can be used as a device that displays the operation statusCan run an interlocking control operation with external devices
Function OC
OC : Main unit, OS : Sub unit
OS
Demand (level)
Night mode or Demand (Level) Note1
Snow sensor Signal input (level)
You can switch the operation mode between cooling and heating by input from the outside to the outdoor unit.
Auto-changeover
Compressor in operation Abnormal operation status
CN3S
CN3N
CN3D
CN51
Terminal to be used
Various types of control using the connectors on the outdoor unit for input-output signal (various types of connections with optional parts)
(4)
Page 24
- 22 -
n
CN51
n
CN3D
n
CN3S
Remote control board
Power supply for lamp
Outdoor unit control board (Note2)
Relay circuit
Remote control board
Outdoor unit control board
Relay circuit
Wire length may be extended
to the maximum of 10m.
Wire length may be extended
to the maximum of 10m.
Wire length may be extended
to the maximum of 10m.
Adapter for
external output
Orange 3
Yellow 4
Green 5
Red 3
Brown 2
Orange 1
Red 3
Brown 2
Orange 1
Adapter for
external output
Adapter for
external input
CN51
CN3D
X Y
X
X
Y
X
X
Y
Y
L1 : Error display lamp L2 : Compressor operation lamp X,Y : Relay (coil specification 0.9W or less for DC12V)
SW1 : Night mode command or demand command SW2 : Demand command X,Y : Relay (Contact specification DC1mA)
X : Snow sensor (Contact specification DC1mA)
Snow sensor
Insulation
CN3S
L1 L2
SW1
SW2
CN3D 1-2P
CN3D 1-3P
Not
supplied
Outdoor unit control board
Not
supplied
Power supply for relay
Not
supplied
NO OK
1In case of 5~32HP
100% (Without demand)
0% 50%
75%
ShortOpen
When 4-step demand is performed, the following must be noted. (Example) When changing from 100% to 50%
Changing steps for demand control
(False) 100%0%50% (Correct)100%75%50%
When the erroneous changing is performed specified above, the thermo may be turned off. The demand percentage indicates the estimated compressor capacity. It is not always the same as the performance percentage. When this function is selected, night mode cannot be performed in conjunction.
SW4-7 : ON (4-step demand)
CN3D 1-3P Demand
OFF
ON
CN3D 1-2P Night mode
OFF
ON
Open Short
Open Short
Open Short
SW4-7 : OFF (Demand, Night mode)
2In case of 34~50HP
Open 100%
50% 88% 75%
Short
50%
0% 38% 25%
Open
88% 38% 75% 63%
Short
75% 25% 63% 50%
SW4-7 : ON (8-step demand)
1-2P
1-2P
1-3P
1-3P
OC side
CN3D
8-step demand
OS side CN3D
Short
Open
Short
Open
Short
Open
ShortOpen
Page 25
IC
TB5 TB
15
12
00
IC
TB5 TB
15
12
00
A1 B2
MA
A1 B2
MARC
TB5
00
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0000
IC
TB5 TB
15
12
00
A1 B2
MA
A1 B2
MA
A1 B2
MA
MA
m1
L11
m2
L3 L4
L12 L13
m3
m5
m4
NO
NO
L2
A1 B2
A1 B2
a. Indoor/outdoor transmission line
Farthest length (1.25mm2 or more) L2 + L3 + L4 200m L2 + L11 + L12 + L13 200m
b. Centralized control transmission line
No connection is required.
c. MA remote controller wiring
Total length (0.3 ~ 1.25mm2) m1 200m m2 + m3 200m m4 + m5 200m
Note 1. For the connection to the terminal block of compact
remote controller, employ wire with a diameter of 0.75 ~ 1.25mm
2
Control wiring example
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. When the total number of indoor units exceeds 26 units In­cluding that above Type 200, a transmission booster is re­quired.
4. In the case when start/stop input (CN32, CN51, CN41) is used by indoor group operation, the Automatic address set-up can not be employed. Please refer to 1. (2) “Manual address set-up.
5. For the connection of LOSSNA
6. For the system of 34 ~ 50HP, please refer to 1.(6).
Y with more than 2 units in a single refrigerant system, refer to the following Connection of 2 LOSSNAY units in refrigerant system.
Interlocking with ventilation
Example to use shielded wire
Group
Group
Group
LC
≤ ≤
≤ ≤ ≤
OS exists only on Type P700~P800YSGM-A.
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
00
OS
TB3
S
(00)
S
M1M2 M1M2M1M2
- 23 -
[4] Examples of system connection
1. System using MA remote controller
(1) In the case of single refrigerant system (Automatic address set-up)
Page 26
Wiring method Address setting method
a. Indoor/outdoor transmission line
Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) When the transmission line is long or noise sources are located near the unit, recommend to use shielded wire.
Connection of shielded wire:
For the earth of shielded wire, apply jumper wiring connection between the earth screw of OC and the S-terminal of IC terminal block (TB5).
b. Centralized control transmission line
Connection is not required.
c. MA remote controller wiring
Connect the 1, 2 terminals of MA remote controller wiring terminal block (TB15) on IC to the terminal block of MA remote controller (MA). (with non-polarity two wires) MA remote controller can be connected to A-type indoor unit or later.
For 2-remote controller operation:
To employ 2-remote controller operation, connect 1, 2 terminals of the terminal block (TB15) on IC to the terminal block of two MA remote controllers.
Set the main/sub selector switch of one MA remote controller to the sub remote controller. (For the setting method,
see the installation manual of MA remote controller.)
For indoor group operation:
For the group operation of IC, connect 1, 2 terminals of the terminal block (TB15) on all ICs within the same group, and connect 1, 2 terminals of the terminal block (TB15) on another IC to the terminals of MA remote controller. (with non-polarity two wires)
To operate the indoor units with different function in the same group, refer to 1. (2).
d. LOSSNAY connection
Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on IC to the indoor/outdoor transmission terminal block (TB5) on LOSSNAY (LC). (with non-polarity two wires)
Linked and registered automatically with all indoor units within a refrigerant system.Please refer to the 1. (2) Manual address set-up, when interlocking partial indoor units with Lossnay, using
Lossnay alone without interlocking, interlocking indoor units and Lossnay for over 16 units within a refrigerant system, or connecting LOSSNAY for over 2 units in a refrigerant system.
e. Switch setting
Address setting is not required.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Main unit
Not required 00
1 Indoor unit
Sub unit IC
2 LOSSNAY LC Not required
3
MA remote
Main uni
Sub unit
t MA Not required
Main
controller
Sub unit
Main unit
MA Sub unit
4OC
Not required
5OS
Refer to 1. (2) to operate indoor units with different function in the same group.
Set with main/sub selector switch.
00
00
Outdoor unit
IC
- 24 -
Page 27
L2
IC
TB5 TB
15
12
01
IC
TB5 TB
15
12
02
A1 B2
MA
A1 B2
MA
TB5
05
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0403
TB5
06
A1 B2
MA
L11
L3 L4
L12 L13
a. Indoor/outdoor transmission line
The same as 1. (1)
b. Centralized control transmission line
No connection is required.
c. MA remote controller wiring
The same as 1. (1)
Control wiring example
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. When the total number of indoor units exceeds 26 units in­cluding that above Type 200, a transmission booster is re­quired.
Interlocking with ventilation
Example to use shielded wire
Group
Group
LC
LC
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
51
OS
(52)
TB3
S
M1M2 M1M2
4. For the system of 34 ~ 50HP, please refer to 1.(6).
OS exists only on Type P700~P800YSGM-A.
- 25 -
1. System using MA remote controller
(2) In the case of single refrigerant system connecting 2 or more LOSSNAY units (Manual address set-up)
Page 28
- 26 -
1 Indoor unit
2 LOSSNAY
3
MA remote controller
4
Main
unit
Sub unit
Main uni
t
Sub uni
Main
unit
Sub unit
t
IC
LC
MA
MA
OC
01 ~ 50
01 ~ 50
Not required
Sub unit
51 ~ 100
Wiring methodAddress setting method
a. Indoor/outdoor transmission line
The same as 1. (1)
Connection of shielded wire:
The same as 1. (1)
b. Centralized control transmission line
No connection is required.
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor group operation:
The same as 1. (1)
d. LOSSNAY connection
Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on the indoor unit (IC) to the terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) The interlocking registration of the indoor unit and Lossnay from the remote controller is required. (For the regis-
tration method, see the installation manual of remote controllers.)
e. Switch setting
Address setting is required as listed below.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der. [
Main unit +1, +2, +3, .... ]
Set any address after setting al
Set with main/sub selector switch.
5OSOutdoor unit address + 1
l
indoor units.
00
00
Main
00
When operating indoor units with different function within a same group, as­sign the indoor unit with the most plenty of function to the main unit.
Set the address not to be overlapped with the indoor unit address.
When setting address to100, make it 50.
The lowest address of indoor unit within refrigerant system + 50
Outdoor unit
Page 29
- 27 -
IC
TB5 TB
15
12
01
IC
TB5 TB
15
12
03
A1 B2
MA
A1 B2
MA
TB5
06
IC
TB5
12
TB
15
IC
TB5 TB
15
12 12
0402
IC
TB5 TB15
05
A1 B2
MA
L3 L4
L23L22 L24
NO
NO
L2
m2
m3
a. Indoor/outdoor transmission line
Farthest length (1.25mm
2
or more) L2 + L3 + L4 200m L22 + L23 + L24 200m
b. Centralized control transmission line
Farthest length via outdoor unit (1.25mm
2
or more)
L2 + L3 + L4 + L31 + L22 + L23 + L24 500m
c. MA remote controller wiring
The same as 1. (1)
Control wiring example
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. Do not connect together the terminal blocks (TB5) of the in ­door unit connected to different outdoor units.
4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit.
5. Grounding of S-terminal of the centralized control terminal block (TB7) on outdoor unit should be done only on one out­door unit.
6. When the total number of indoor units exceeds 26 units in­cluding that above Type 200, a transmission booster is re­quired.
Interlocking with ventilation
Example to use shielded wire
Group
Group
LC
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
CN41→CN40
Replace
OC
TB3
TB7
51
OC
TB3
TB7
52
S
(54)
OS
S
(53)
L31
OS
TB3
Leave CN41 as it is.
TB3
Connect
S
M1M2 M1M2M1M2
M1M2
S
M1M2 M1M2
7. For the system of 34 ~ 50HP, please refer to 1.(6).
OS exists only on Type P700~P800YSGM-A.
1. System using MA remote controller
(3) In the case of different refrigerant grouping operation
Page 30
- 28 -
Wiring method Address setting method
a. Indoor/outdoor transmission line
Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) Make sure to use shielded wire.
Connecting of shielded wire:
The same as 1. (1)
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. For one OC only, replace the power selecting connector (CN41) with (CN40). Make sure to use shielded wire.
Connecting of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect Sterminal of the terminal block (TB7) on the one OC with (CN40) replaced to the earth screw ( ) of the electrical parts box.
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor unit group operation:
The same as 1. (2)
d. LOSSNAY connection
The same as 1. (2)
e. Switch setting
Address setting is required as follows.
1 Indoor unit
2 LOSSNAY
3
MA remote controller
4
Sub unit
Main unit Sub unit
IC
LC
MA
MA
OC
01 ~ 50
01 ~ 50
Not required
Sub unit
51 ~ 100
Set the address not to be overlapped with the indoor unit address.
When setting address to100, make it 50.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der.
[Main unit +1, +2, +3, .... ]
Set any address after setting all indoor units.
Set by the main/sub selector switch.
The lowest address of indoor unit within refrigerant system + 50
00
00
Main
Outdoor unit
Main unit
Sub unit
Main uni
t
5OS
Outdoor unit address + 1
00
Page 31
- 29 -
IC
TB5 TB
15
12
01
IC
TB5 TB
15
12
02
A1 B2
MA
A1 B2
MA
TB5
05
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0403
TB5
06
A1 B2
MA
L3 L4
L23 L24
NO
L2
L22
NO
a. Indoor/outdoor transmission line
The same as 1. (3)
b. Centralized control transmission line
Farthest length via outdoor unit (1.25mm2 or more) L32 + L31 + L2 + L3 + L4 500m L32 + L22 + L23 + L24 500m L2 + L3 + L4 + L31 + L22 + L23 + L24 500m
c. MA remote controller wiring
The same as 1. (1)
Control wiring example
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. Do not connect together the terminal blocks (TB5) of the in ­door unit connected to different outdoor units.
6. When the total number of indoor units exceeds 26 units In­cluding that above Type 200, a transmission booster is re­quired.
Interlocking with ventilation
Example to use shielded wire
Group
Group
LC
LC
Notes:
1. Leave SW2-1 as “OFF” when connecting LM adapter only.
2. LM adapter requires the power source of 1-phase AC 230V
Note 1
.
≤ ≤
4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit.
5. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit onl
CN41CN40 Replace SW2-1 OFFON
y.
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
51
OS
S
(52)
OC
TB3
TB7
53
(54)
System controller
S
L31
L32
Note 2
TB3
TB3
OS
S
M1M2 M1M2
S
S
M1M2 M1M2
M1M2
M1M2
M1M2
Connect
Note 1
Leave CN41 as it is. SW2-1 OFFON
7. For the system of 34 ~ 50HP, please refer to 1.(6).
OS exists only on Type P700~P800YSGM-A.
1. System using MA remote controller
(4) In the case of connecting system controller to centralized control transmission line
Page 32
- 30 -
Wiring method Address setting method
a. Indoor/outdoor transmission line
The same as 1. (3)
Connection of shielded wire:
The same as 1. (1)
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor group operation:
The same as 1. (1)
d. LOSSNAY connection
Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) The interlocking registration of the indoor unit and LOSSNAY from the system controller is required. (For the
registration method, see the installation manual of the system remote controllers.) When connecting ON/OFF remote controller and LM adaptor only, the interlocking registration from the remote controller is required.
e. Switch setting
Address setting is required as listed below.
1 Indoor unit
2 LOSSNAY
3
MA remote controller
4
Main unit
Sub unit
Main unit
Sub unit
IC
LC
MA
MA
OC
01 ~ 50
01 ~ 50
Not required
Sub unit
Set the address not to be overlapped with the indoor unit address.
Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring.
When setting address to100, make it 50.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der.
[Main unit +1, +2, +3, .... ]
Set any address after setting all indoor units.
Set by the main/sub selector switch.
The lowest address of indoor unit within refrigerant system + 50
00
00
Main
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control switch (SW2-1) on the MAIN board of all outdoor units to “ON.” Make sure to use shielded wire.
Connection of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect S­terminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box.
Outdoor unit
51 ~ 100
Sub
unit
Main unit
5OS
Outdoor unit address + 1
00
Page 33
- 31 -
IC
TB5 TB
15
12
01
IC
TB5 TB
15
12
02
A1 B2
MA
A1 B2
MA
TB5
05
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0403
TB5
06
A1 B2
MA
L3 L4
L23 L24
L2
L22
NO
a. Indoor/outdoor transmission line
Farthest length (1.25mm2 or more) L2 + L3 + L4 200m L22 + L23 + L24 200m L25 200m
b. Centralized control transmission line
Farthest length via outdoor unit (1.25mm2 or more) L25 + L31 + L2 + L3 + L4 500m L2 + L3 + L4 + L31 + L22 + L23 + L24 500m
c. MA remote controller wiring
The same as 1. (1)
Control wiring example
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. Do not connect together the terminal blocks (TB5) of the in ­door unit connected to different outdoor units.
4. Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit.
5. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit only.
6. The system controller connectable to the indoor/outdoor trans­mission line counts for 3 sets maximum. While G-50 counts for only 1 set
7. When the total number of indoor units exceeds 26 sets, the system controller may not be connected to the indoor/out­door transmission line.
8. When the total number indoor units exceed 18 sets and they includes Type 200 or above, the system controller may not
be connected to the indoor/outdoor transmission line.
Interlocking with ventilation
Example to use shielded wire
Group
Group
LC
LC
Note 1. LM adaptor may not be connected to indoor/outdoor transmission line.
≤ ≤
≤ ≤
NO
CN41→CN40 Replace SW2-1 OFFON
Leave CN41 as it is. SW2-1 OFF→ON
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
51
OS
(52)
OC
TB3
TB7
53
(54)
L31
Connect
System controller
Note 1
L25
TB3
OS
TB3
S
M1M2
S
M1M2 M1M2
S
M1M2
S
M1M2 M1M2
S
M1M2
9. For the system of 34 ~ 50HP, please refer to 1.(6).
OS exists only on Type P700~P800YSGM-A.
1. System using MA remote controller
(5) In the case of connecting system controller to indoor/outdoor transmission line (excluding LM adaptor)
Page 34
- 32 -
Wiring method Address setting method
a. Indoor/outdoor transmission line
Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block (TB3) on the outdoor unit (OC) and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires) Make sure to use shielded wire.
Connection of shielded wire:
For the grounding of shielded wire, apply jumper wiring between the grounding screw of OC, S-terminal of the terminal block (TB3), and S-terminal of the system controller.
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on each OC. On one OC only, replace the power selecting connector (CN41) with (CN40). Set the centralized control switch (SW2-1) on the MAIN board of all outdoor units to “ON.” Make sure to use shielded wire.
Connection of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC. Connect S­terminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box.
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor unit group operation:
The same as 1. (2)
d. LOSSNAY connection
Apply jumper wiring to connect A, B terminals of the terminal block (TB5) on (IC) to the terminal block (TB5) on the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires)
The interlocking registration of the indoor unit and Lossnay is required from the system controller. (For the
registration method, see the instruction manual of system controller.) To connect ON/OFF remote controller only, interlocking registration from the remote controller is required.
e. Switch setting
Address setting is required as follows.
1 Indoor unit
2 LOSSNAY
3
MA remote controller
4
Main
unit
Sub unit
Main unit
Sub unit
IC
OC
LC
MA
MA
01 ~ 50
01 ~ 50
Not required
Sub unit
Set the address not to be overlapped with the indoor unit address.
Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring.
When setting address to100, make it 50.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der. [Main unit +1, +2, +3,]
Set any address after setting all indoor units.
Set by the main/sub selector switch
.
The lowest address of indoor unit within refrigerant system + 50
00
00
Main
51 ~ 100
Sub
unit
Main unit
5OS
Outdoor unit address + 1
00
Outdoor unit
Page 35
- 33 -
NO
Control wiring example
Group
Group
Group
Prohibited items Allowable length
1. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within the same group.
2. MA remote controller of 3 units or more can not be connected to the indoor unit within the same group.
3. Do not connect together the terminal blocks (TB5) of the in ­door unit connected to different outdoor units.
6. When the total number of indoor units exceeds 26 units In­cluding that above Type 200, a transmission booster is re­quired.
Interlocking with ventilation
Example to use shielded wire
Notes:
1. Leave SW2-1 as “OFF” when connecting LM adapter only.
2. LM adapter requires the power source of 1-phase AC 230V.
4. Replacement of the power supply selecting connector (CN41) with (CN40) should be done on the system unit. When connec­ting a system controller or grouping the units in different refrige­rant systems, replacement should be done on only on one unit in the system. (When 34~50HP models exist in the same syste­m, replacement of the power supply selecting connector should be done on 34~50HP system units.)
5.
Grounding work is required for shield earth (S-terminal) of the centralized control transmission block (TB7) on the system unit whose power supply selecting connector has been replaced.
Leave CN41 as it is. Leave SW2-1 as OFF.
Leave CN41 as it is. Leave SW2-1 as OFF.
CN41CN40 Replace SW2-1 OFFON
Leave CN41 as it is. SW2-1 OFFON
Note 1
Note 2
Note 2
a. Indoor/outdoor transmission line
Farthest length (1.25mm2 or more) L2 + L3 + L4 200m L22 + L23 + L24 200m
b. Centralized control transmission line
Farthest length via outdoor unit (1.25mm
2
or more)
L32 + L31 + L1 + L2 + L3 + L4 500m
≤ ≤
L32 + L21 + L22 + L23 + L24 500m
L1 + L2 + L3 + L4 + L31 + L21 + L22 + L23 + L24 500m
c. MA remote controller wiring
Total length (0.3 ~ 1.25mm2) m1 200m m2 + m3 200m
≤ ≤
NO
IC
TB5STB
15
m1
12
01
IC
TB5STB
15
12
02
A1 B2
MA
A1 B2
MA
LC
TB5
S
05
IC
TB5
S 12
TB
15
IC
TB5STB
15
12
0403
LC
TB5
S
06
A1 B2
MA
m2
m3
L3 L4
L23 L24
System controller
L2
L21
OC
TB3
TB7
S
51
OS
TB3
TB7
S
54
S
L31
L32
L22
OC
TB3
TB7
S
53
L1
OS
TB3
TB7
S
52
M1M2 M1M2 M1M2
M1M2 M1M2 M1M2
M1M2M1M2M1M2M1M2
M1M2
M1M2
M1M2
M1M2
M1M2
1. System using MA remote controller
(6)
In the case of connecting system controller to centralized control transmission line (Applicable models 34~50HP)
Page 36
Wiring method Address setting method
c. MA remote controller wiring
The same as 1. (1)
For 2-remote controller operation:
The same as 1. (1)
For indoor group operation:
The same as 1. (1)
d. LOSSNAY connection
Apply jumper wiring to connect M1, M2 terminals of the terminal block (TB5) on IC to the terminal block (TB5) on the indoor/outdoor transmission line terminal block (TB5) on Lossnay (LC). (with non-polarity two wires) The interlocking registration of the indoor unit and LOSSNAY from the system controller is required. (For the
registration method, see the installation manual of the system remote controllers.) When connecting ON/OFF remote controller and LM adaptor only, the interlocking registration from the remote controller is required.
e. Switch setting
Address setting is required as listed below.
1 Indoor unit
2 LOSSNAY
3
MA remote controller
4
Main
unit
Sub unit
Sub unit
IC
LC
MA
MA
OC
01 ~ 50
01 ~ 50
Not required
Sub
unit
Set the address not to be overlapped with the indoor unit address.
Conduct initial setting by the system controller with the same setting detail of indoor unit applied in MA remote controller wiring.
When setting address to100, make it 50.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the primary unit.
Set to the primary unit address within a same group in serial order. [Main
unit +1, +2, +3, .... ]
Set any address after setting al
l
indoor units.
Set by the main/sub selector switch.
The lowest address of indoor unit within refrigerant system + 50
00
00
Main
Make sure to use shielded wire.
Connection of shielded wire:
Apply jumper wiring to connect the shielded earth to S-terminal of the terminal block (TB7) on each OC and OC. Connect Sterminal of the terminal block (TB7) on one OC with (CN40) connected to the earth screw ( ) of the electrical parts box.
Outdoor unit (Main unit)
Outdoor auxiliary unit (Sub unit)
a. Indoor/outdoor transmission line
Apply jumper wiring connection between M1, M2 terminals of the indoor/outdoor transmission line terminal block
Make sure to use shielded wire.
Connection of shielded wire:
For the earth of shielded wire, apply jumper wiring connection between the earth screw of OC and the S-terminal of IC terminal block (TB5).
b. Centralized control transmission line
Apply jumper wiring between M1, M2 terminals of centralized control transmission line terminal blocks (TB7) on the system unit (OC) and that A, B terminals of centralized control transmission line terminal blocks (TB7) on the sub unit (OS). On one OC only, replace the power selecting connector (CN41) with (CN40). (Leave CN41 as it is on OS.) Set the centralized control switch (SW2-1) on the MAIN board of all OC.
(TB3) on the outdoor unit [main unit (OC)] and that of indoor/outdoor transmission line terminal block (TB5) on each indoor unit (IC). (with non-polarity two wires)
51 ~ 100
52 ~ 100
Main
unit
5OS
Outdoor unit (system unit) address + 1
00
- 34 -
Page 37
- 35 -
IC
TB5 TB
15
12
01
101
103
102
IC
TB5 TB
15
12
02
A1 B2
RC
A1 B2
RC
TB5
05
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0403
TB5
06
A1 B2
RC
L3 L4
L23 L24
L2
L22
NO
Control wiring example
Group
Prohibited items Allowable length
Interlocking with ventilation
Example to use shielded wire
Group
Group
LC
LC
Note 1: If only the LM adaptor is connected, leave SW2-1 to OFF. Note 2: LM adaptor requires single phase AC 230 V.
1. A group of indoor units cannot be connected to both M-NET remote controller and MA remote controllers.
2. No more than 2 M-NET remote controllers can be connected to a group of indoor units.
3. Do not connect the TB5s (Terminal block) of the indoor units that are connected to different outdoor units.
4. Replace CN41 (power supply switch connector on outdoor units) on only one of the outdoor units.
5. Ground the S terminal of TB7 on only one of the outdoor units.
6. Transmission line booster is necessary when the total number of connected indoor units exceeds 20 (19 with 1 BC and 18 with 1 BC and BS each).
7. Transmission line booster is necessary if the system includes indoor units of 200 or higher and the total number of indoor units exceeds 16 (15 with 1 BC and 14 with 1 BC and BS each).
a. Indoor/outdoor transmission line
b. Centralized control transmission line
c. M-NET remote controller wiring
CN41→CN40 Replace SW2-1 OFF
NO
ON
Note 1
Leave CN41 as it is. SW2-1 OFF→ON
The same as 1. (4)
The same as 1. (3)
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
51
OS
(52)
OC
TB3
TB7
53
(54)
System controller
L31
L32
Note 2
TB3
TB3
OS
Note 1
Connect
S
M1M2 M1M2
S
M1M2
S
M1M2 M1M2
S
M1M2
S
M1M2
Total length (0.3 ~ 1.25mm2)
Note 1. For the connection to the terminal block of compact
Note 2. When the wire length exceeds 10m, the diameter
must be 1.25mm , and the length must be shorter than that of <a. indoor-outdoor transmission line>.
remote controller, employ wire with a diameter of 0.75 ~ 1.25mm
2
2
m1 10m
m1
2. System Using the M-NET Remote Controller
(1) System with the system controller connected to the transmission lines for centralized control
Page 38
- 36 -
a. Indoor/outdoor transmission line
Connection of shielded wire:
b. Centralized control transmission line
c. M-NET remote controller wiring
The same as 1. (3)
For 2-remote controller operation:
The same as 1. (1)
Connection of shielded wire:
The same as 1. (4)
The same as 1. (4)
For a 2-remote-controller operation, connect each of the terminals M1 and M2 of the IC terminal block to the two RC terminal blocks respectively.
Indoor unit group operation To operate IC
s as a group, connect the M1, M2 terminals of the terminal block on the main IC in the group with the
RC terminal block (with non-polar two wires)
M-NET remote controller can be connected at any point on the indoor/outdoor transmission line.
To run a group operation of indoor units that have different functions, select the unit with the greatest number
of functions as the main unit.
The same as 1. (4)
For indoor unit group operation:
d. LOSSNAY connection
M-NET remote controller wiring Connect each of the M1 and M2 terminals of TB5 (indoor/outdoor transmission line terminal block) on the IC to the terminals on the M-NET remote controller.
e. Switch setting
Address setting is required as follows.
1 Indoor unit
2 LOSSNAY
3
M-NET remote controller
4
Main
unit
Sub
unit
Main unit
Sub unit
IC
OC
LC
RC
RC
01 ~ 50
01 ~ 50
51 ~ 100
101 ~ 150
151 ~ 200
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
00
00
101
00
Starting with the number main unit address +1, assign a sequential number to each of the rest of the in­door units.
After all indoor units have received an address, use any remaining num­ber and assign it to the Lossnay unit. units.
The smallest indoor unit address in the same refrigerant system +50
The address of the main unit in the same group +100
The address of the main unit in the same group +150
Assign the smallest address within the group to the indoor unit to be­come the main unit.
Make the initial setting of the indoor unit group setting with the system controller (MELANS).
The Lossnay address must not overlap with the indoor unit ad­dress.
100
s digit does not need to be
set.
Set the address to 00 when setting it to 200 .
Set the address to 50 when setting it to 100 .
Wiring method Address setting method
Main unit
Sub unit5OSOutdoor unit address + 1
Outdoor unit
Page 39
- 37 -
IC
TB5 TB
15
12
01
IC
TB5 TB
15
12
02
IC
TB5 TB
15
12
04
104
IC
TB5 TB
15
12
06
A1 B2
MA
A1 B2
RC
A1 B2
MA
IC
TB5
12
TB
15
IC
TB5 TB
15
12
0503
L2
L22
L3 L4
L23 L24
105
A1 B2
RC
NO
a. Indoor/outdoor transmission line
The same as 1. (3)
b. Centralized control transmission line
The same as 1. (4)
c-1. MA remote controller wiring
The same as 1. (1)
c-2. M-net remote controller wiring
The same as 2. (1)
Control wiring example
Group
Prohibited items Allowable length
1. Make sure to connect the system controller.
2. M-NET and MA remote controllers can not be connected to­gether to the indoor unit within a same group.
3. M-NET remote controller of 3 units or more can not be con­nected to the indoor unit within a same group.
6.
7.
8. When the total number of indoor units exceeds 20 sets, trans­mission line booster is required.
9. When the total number of indoor units exceed 16 sets and they include Type 200 or above, the transmission line booster is required.
Example to use shielded wire
Group
Group
Notes:
1. Leave SW2-1 as “OFF” when connecting LM adapter only.
2. LM adapter requires the power source of 1-phase AC 230V.
Group
Replacement of the power supply selecting connector (CN41) on the outdoor unit should be done only on one outdoor unit. Grounding work is required for S-terminal of the centralized control transmission block (TB7) on one outdoor unit only.
4. MA remote controller of 3 units or more can not be connected to the indoor unit within a same group.
5. Do not connect together the terminal blocks (TB5) of the in ­door unit connected to different outdoor units.
NO
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
S
M1M2
OC
TB3
TB7
51
OS
(52)
OC
TB3
TB7
53
(54)
System controller
L31
L32
Note 2
TB3
OS
TB3
S
M1M2 M1M2
S
M1M2
S
M1M2
S
M1M2 M1M2
S
M1M2
Connect
Note 1
CN41CN40 Replace SW2-1 OFFON
Note 1
Leave CN41 as it is. SW2-1 OFFON
3. System where MA remote controller and M-NET remote controller coexist
Page 40
- 38 -
Indoor unit
MA remote controller
Indoor unit
M-NET remote controller
Wiring method Address setting method
a. Indoor/outdoor transmission line
The same as 1. (3)
Connection of shielded wire:
The same as 1. (1)
b. Centralized control transmission line
The same as 1. (4)
Connection of shielded wire:
The same as 1. (4)
c-1. MA remote controller wiring, For 2-remote controller operation: , For indoor unit group operation:
The same as 1. (1)
c-2. M-NET remote controller, For 2-remote controller operation: , For indoor unit group operation:
The same as 2. (1)
d. Lossnay connection
The same as 1. (4)
e. Switch setting
Address setting is required as follows.
Operation with MA remote controller
Operation with M-NET remote ontroller
Lossnay
Outdoor unit
IC
MA
MA
IC
RC
RC
LC
OC
01 ~ 50
Not
required
Sub remote
controller
01 ~ 50
101 ~ 150
151 ~ 200
01 ~ 50
51 ~ 100
Set lower address than that of the indoor unit connected to M-NET remote controller.
Initially set the same setting detail as that of indoor unit group executed in the wiring of MA remote controller with system controller.
Initially set the same setting detail as that of indoor unit group with system controller.
100 digits are not required to set.
When setting the address as200, make it 00.
Set so that not duplicating with
the indoor unit addresses.
When setting address to100, make it 50.
Order
Unit or controller
Address
Setting method Caution
Factory
setting range
setting
Set the lowest address within a same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der. [Main unit +1, +2, +3,]
Set by using the main/sub se­lector switch
After setting the address of the indoor unit to be operated with MA controller, set the lowest address among the same group to the indoor unit desired to be the main unit.
Set to the main unit address within a same group in serial or­der. [Main unit +1, +2, +3,]
Main unit address inside a same group + 100
Main unit address inside a same group + 150
After setting all indoor units, set any address.
The lowest address of indoor unit within refrigerant system + 50
00
Main
00
101
00
00
Main unit
Sub unit
Main unit
Sub uni
Sub unit
Sub unit
Sub unit
Main unit
Main unit
Main unit
t
1
2
3
4
OS Outdoor unit address + 15
Page 41
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1. Line branching system
Warning
Be careful not to leak refrigerant gas (R410A) near a fire. Refrigerant gas if touched a fire of gas oven and the like will be decomposed to generate poisonous gas leading to gas-poisoning. Do not conduct welding work in a closed room. Run a gas leak test after completing refrigerant piping work.
Do not use a charging cylinder.
Using a charging cylinder may cause the refrigerant to deteriorate.
Do not use existing refrigerant piping.
The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerantor oil of the new unit to deteriorate.
Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result.
Caution
Caution
Caution
Do not use a refrigerant other than that indicated on the equipment at installation or movement.
Mixing of different refrigerant or air makes the refrigeration cycle abnormal causing breakage and the like.
Warning
Caution
Use refrigerant piping phosphorus deoxidized cop­per. In addition, be sure that the inner and outer sur­face of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.
Contaminants on the inside of the refrigerant piping may cause the refrigerant residual oil to deteriorate.
Caution
Use liquid refrigerant to fill the system.
If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.
For the piping connection, the end branching system is applied where the end of refrigerant piping from the outdoor unit is branched and connected to each indoor unit. As the piping connection method, the indoor unit is applied with flare connection, outdoor unit gas piping is flange connection, and liquid piping is flare connection. For the branching, brazed connection is applied.
Sub unit - Main unit
A+B Less than 4m
Total piping length
A+B+C+D+E+F+G+I
+J+a+b+c+d+e+f+g+i
Less than 300m
Allowable length
Farthest piping length (L) A(B)+C+G+I+J+i Farthest piping length after first branch ( )
Oil balance pipe
G+I+J+i Less than 40m
H
Less than 50m
(When the outdoor unit is below, less than 40m)
Indoor - Indoor height difference h1
K
Sub unit - Main unit height difference h2
Less than 15m
Less than 0.1m
Less than 150m
Oil piping length Less than 4m (Equivalent length:less than 5m) Oil piping height Less than 0.1m
Allowable height difference
Indoor - Outdoor height difference
To downstream unit
First branch
(Note2)
Indoor Indoor Indoor Indoor
Indoor Indoor Indoor Indoor
Sub unit
L
H
a
h1
12
h2
b
c
3
d
4
e
5
f
6
g
7
i
8
Liquid distributor Gas distributor
Main unit
A
B (Note1)
CDEF
GI J
K
C
Liquid pipe (Main pipe) C
Gas pipe (Main pipe) C
Liquid pipe B
Gas pipe B
Gas pipe A
Gas distributor (Built-in on the unit)
Liquid distributor
Liquid pipe A
Oil balance pipe K
Main unitSub unit
indicates piping connection.
(Note) The total model names downstream in
the table below represent that viewed from C-point in the above figure.
(Note1) As the gas distributor is built in on the main unit, B has only the liquid pipe. (Note2) Make sure to use CMY-Y302-D for the first branch.
[5] Restrictions on Refrigerant Piping Length
Page 42
- 40 -
Fan guard
Heat exchanger
Fan guard
Heat exchanger
££
Components of the Outdoor Unit
[1] Appearance of the Components and Refrigerant Circuit
[ Front view of the unit (Main unit, Sub unit) ]
[ Rear view of the unit (Main unit, Sub unit ]
Page 43
- 41 -
Oil separator (No.1)
Commercial power supply compressor (No.2)
Oil separator (No.2)
Accumulator
Oil balance pipeInverter compressor
(No.1)
Pressure switch
4-way valve (21S4b)
4-way valve (21S4a)
4-way valve (21S4c)
High-pressure pressure sensor (63HS)
Low-pressure check joint
High-pressure check joint
2-way valve (SV5d)
2-way valve (SV5b)
2-way valve (SV5c)
Drier
Gas-side ball valve
Liquid-side ball valve
Linear expansion valve (LEV1)
Stop valve for oil balance
Service port for oil balance pipe (for vacuuming oil balance pipe)
[ Front view of the refrigerant circuit – Right (Main unit, sub unit) ]
[ Rear view of the refrigerant circuit – Left (Main unit) ]
Page 44
- 42 -
Gas distributor Stop valve for oil balance
4-way valve (21S4b)
4-way valve (21S4a)
Oil tank
4-way valve (21S4c)
2-way valve (SV5b)
2-way valve (SV5c)
Oil balance pipe
[ Front view of the refrigerant circuit – Right (Sub unit) ]
[ Rear view of the refrigerant circuit – Left (Main unit, sub unit) ]
Page 45
Accumulator
Oil balance pipe
Subcool coil
- 43 -
[ Rear view of the unit – Left (Main unit, sub unit) ]
Page 46
- 44 -
Power supply terminal block (TB1)
Transmission line terminal block for centralized control (TB7)
Indoor/outdoor transmission terminal block (TB3)
FILTER board
RELAY board
MAIN board
INV board
Choke coil (L1, L2)
Transformer
DCL (back)
Gate amp board
(G/A board)
FAN board
Diode stack
(DS)
Smoothing capacitor (C11, C12)
Rush current protection resistor (R11, R12)
Electromagnetic contactor (52C1)
Noise filter
Electromagnetic
contactor (52F)
Fuse
AC660V 50A
Electromagnetic
contactor (52C2)
Overcurrent
relay (51C2)
[ Appearance ]
[ Under the circuit board cover ]
[2] Control Box
Page 47
- 45 -
CNVCC1 Controlled source input
1–2
DC30V
1–3
DC30V
4–5
DC7V
4–6
DC12V
7–8
DC7V
CNRS3BLD2
CNAC3 Power output
3
L1
1
L2
CN20 Power intput
5
L1
CN21 Power intput
3
L2
1
N
LD1 Service LED
SW5 SW4 SW3 SW2
SWU2 SWU1
SW1
CNLVB
CN3S
CN3D
CN3N
CNRS3A CNS1 CNS2 CN40 CN41
CNRT1
CNOUT1
CN52C Control for 52C1
CN51
3–4
Compressor ON/OFF
3–5
Trouble
CN38
[3] Circuit Board
1. MAIN board
Page 48
- 46 -
CNVCC1 Power supply
1–2
DC30V
1–3
DC30V
4–5
DC7V
4–6
DC12V
7–8
DC7V
CN15V2 Power supply for IPM control
F02CNVDC
SW1
SW2
CN52C
CNFAN CNRS1 CNRS2
Serial transmission for MAIN board
CNCT2
CNAC2 Power Source
5
L2
3
N
1
G
CNTH
CNCT
CNDR2
2. INV board
Page 49
- 47 -
52C2, 52F, CH12 Power input (AC220
~240V)
51C2 Detection output
CNOUT2 Relay driving input
CNRT2
1–5
1
3
CNCH CH12 Power output
1–3
AC220~240V
CN51C2 51C2 contact input
CN52F 52F driving output
1–3
AC220~240V
CN52C2 52C2 drivingoutput
1–5
AC220~240V
4. Relay board
CNVDC DC bus voltage input
1–3
LED1
LED2
SW2
CNTRIPM (back)
CNINV Fan motor output Fuse CNRS2
3. FAN board
Page 50
- 48 -
CNFG CNL2CNL1
CNOUT Controlled source output
CNIN Controlled source input
5. Filter board
CNDR1
CN15V1
CNDC1 CNDC2
CNIPM1
6. G/A board
Page 51
- 49 -
Function/specification
Remote controller address setting
Not required Required
Indoor/outdoor unit address setting
Not required (applicable only in the case of single refrigerant systems)(Note 3)
Required
Wiring method Non-polar 2 wires
Daisy-chain the indoor units with non-polar 2 wires when running a group operation.
Non-polar 2 wires
Installation location of remote controller
Connectable to any indoor unit in the group
Connectible at any point on the indoor/outdoor transmission line
Interlocking with the ventilation unit
Each indoor unit can individually be interlocked with a ventilation unit. (Registered on the remote controller in the same group)
Each indoor unit can individually be interlocked with a ventilation unit. (Registered on the remote controller)
Making group changes
(Note 1) MA remote controller includes MA remote controllers, MA compact remote controllers, and wireless remote controllers. (Note 2) M-NET remote controller includes ME remote controllers and compact remote controllers. (Note 3) Depending on the system configuration, even a single refrigerant system may require an address setting. (Note 4) Either an MA remote controller or an M-NET remote controller can be connected to a group of multiple-refrigerant systems
or when a system controller is connected.
(Note 1) M-NET remote controllers and MA remote controllers cannot both be connected to the same group of indoor units. (Note 2) A system controller must be connected to a system that has both MA remote controllers and M-NET remote controllers.
MA remote controller wires between indoor units require rewiring.
Indoor unit and remote controller addresses must be changed, or the registration information must be changed using MELANS.
M-NET(ME)Remote Controller (Notes 2, 4)MA remote controller (Notes 1, 4)
MA remote controller (Notes 1, 2)
< System using an MA remote controller > < System using an M-NET remote controller >
• Low chances of system expansion and grouping changes are expected.
• Grouping (floor plan) has been decided at the time of installation.
• High chances of centralized installation of remote controllers, system expansion, and grouping changes.
• Grouping (floor plan) has not been decided at the time of installation.
• Direct connection of the remote controller to the Lossnay inside the heater-humidifier.
M-NET (ME) remote controller (Notes 1, 2)
MA remote controller
Outdoor unit
Indoor unit M-NET remote controller
Outdoor unit
Indoor unit
M-NET transmission line (indoor/outdoor transmission line)
M-NET transmission line (indoor/outdoor transmission line)
GroupGroup GroupGroup
¢¢
Remote Controller
[1] Functions and Specifications of MA and ME Remote Controllers
There are two types of remote controllers: M-NET (ME) remote controller, which is connected on the indoor/outdoor transmission line, and MA remote controller, which is connected to each indoor unit.
1. Comparison of Functions and Specifications of MA and ME Remote Controllers
2. Selecting the Best Type of Remote Controller
Select either the MA remote controller or the M-NET remote controller to take full advantage of a given system. The following information is provided as a reference for selection.
Page 52
- 50 -
(A)Group registration
2
Displaying “GROUP REGISTRA TION”.
- Press and hold down the A [FIL TER] and B [Louver (
)] buttons at the same time for two seconds. The display shown below appears.
Set the unit address No.
- Press the c [TEMP. (
) and ( )] buttons. The unit address No. decreases and increases. Set it to the indoor unit address No. you want to register.
4
Register the indoor unit address No. you have set.
- Press the D [TEST] button to register the indoor unit address No. being displayed.
- When registration is completed normally , the unit type is dis­played as shown below.
- If the specified indoor unit does not exist, an error message will be displayed. Make sure there are indoor units and re­peat the operation above.
<When registration completed normally>
<If an error message appears>
5 To register multiple indoor units, repeat steps 3 and 4.
(B) Interlock registration
6
Displaying “INTERLOCK REGISTRATION”
- Press the [Mode selection (
)] button. The
display shown below appears. If the button is pressed again, the display returns to 2 GROUP REGISTRATION .
7
Displaying address No. of LOSSNAY and any indoor unit ad­dress No. you want to interlock.
- Press the C [TEMP. (
) and ( )] buttons. INDOOR UNIT AD­DRESS NO. decreases and increases. Set it to the indoor unit address No. you want to interlock.
- Press the HG [Time selection (
) and ( )] buttons. INTER­LOCKED UNIT ADDRESS NO. decreases and increases. Set it to the LOSSNAY address No. you want to interlock.
8
Register to interlock LOSSNAY with indoor unit.
- Press the D [TEST] button. The display shown below appears, and the indoor unit being displayed at INDOOR UNIT AD­DRESS and the LOSSNAY being displayed at INTERLOCKED UNIT ADDRESS are interlocked.
- The above can also be registered similarly by displaying the LOSSNAY address at INDOOR UNIT ADDRESS and the in­door unit address at INTERLOCKED UNIT ADDRESS .
NOTE:
INDOOR UNIT ADDRESS and INTERLOCKED UNIT ADDRESS
are displayed at the same time
T o confirm the addresses, go to (2) Registered address confirmation .
Displays the unit type. (Indoor unit in this case.)
“ ” will flash as a registration error . (If the registered indoor unit does not exist)
If registration is completed normally, the display alternates as shown in the figure at the left. If a registration error occurs,
will flash. (Indicates that the
unit does not exist.)
INDOOR UNIT ADDRESS
INDOOR UNIT
ADDRESS
INTERLOCKED
UNIT ADDRESS
PAR-F27MEA
TIMER SET
ON/OFF
FILTER
CHECK TEST
TEMP.
CLOCK ON OFF
T o confirm the addresses, go to (2) Registered address confirmation .
(Alternate display)
This operation should be performed to set a group of indoor units between different refrigerant systems and to manually raise the indoor/outdoor unit addresses.
(A) Group setting ........... To register the indoor units you want to control with the remote
controller, confirm the registered units, or delete registered units.
(B) Interlock setting........ To register the LOSSNAY to be interlocked with indoor units, con-
firm the registered units, or delete registered units.
[ H0 flashing display] [OFF display]
[Setting Procedure]
(1) Address registration
Register the indoor unit address you want to control with the remote controller.
1
Display “H0”, which flashes when the power is on, or OFF using the [ON/OFF] button.
The liquid crystal displays are shown below. If any of these displays is different, the next set cannot be performed.
C G
E
H
B
F A
D
3
””
· Interlock all the units in a group with the LOSSNAY. If not interlocked, the LOSSNAY will not operate.
· If an SC is connected, make an interlocking setting with the SC.
[2] Group Setting and Interlocking Settings that are Made on the ME Remote Controller
1. Group setting/interlocking setting
Page 53
- 51 -
(B) Interlocked registration information confirmation After performing step 6, proceed as follows:
B
B
C
Display the indoor unit address No. you want to confirm.
- Press the H [Time selection (
) and ( )] buttons. The inter­locked unit address decreases and increases. Set it to the in­door unit address No. you want to confirm.
Displaying the LOSSNA Y address No. interlocked at step .
- Press the E [Timer selection (
)] button. The interlocked LOSSNAY address No. and indoor unit address No. are alter­nately displayed.
D Displaying another registered unit address No.
- After step C, press the E [Timer selection (
)] button again. Another registered unit address No. is displayed. (The display method is the same as step C.)
(C)Returning to the normal state When all the group registration and interlock registration operations
are completed, return to the normal state as described below.
Press and hold down the [FILTER] and B [Louver
(
)] buttons at the same time for two seconds. The re-
mote controller returns to the state of 1.
(2) Registered address confirmation
Display the indoor unit address No. registered in the remote con­troller by performing steps 1 and 2.
Repeat steps 79 and 8 above to interlock all the indoor units in a group with the LOSSNAY.
T o return to the normal state, go to step 0.
To confirm the addresses, go to (2) Registered address con­firmation .
(A) Group registration information confirmation
A Displaying GROUP REGISTRATION
- Each time you press the E [Timer selection (
)] button, the
registered indoor unit address No. and unit type are displayed. <Registered>
<Not registered>
- When there is one registration, one address No. is displayed no matter how many times the button is pressed.
- When there are multiple registrations (ex: 011 , 012 , 013 , the address Nos.) are displayed in 011 012 013 order each time the E [Timer selection (
)] button is pressed.
Indicates the unit type. (Indoor unit in this case.)
The above can also be confirmed similarly by displaying the LOSSNAY address at the interlocked unit address.
Address of unit that is interlocked
T o delete an address, go to
(3) Address deletion
”.
To return to the normal state, go to step 0.
(Alternate display)
Address of another registered unit
(Alternate display)
T o delete an address, go to
(3) Address deletion .
(3) Address deletion
Group registration information deletion deletes the indoor units registered in the remote controller. Interlocked registration information deletion deletes the interlock between units. Both deletion operations perform the address confirmation processing of (2) and are performed in the state in which the unit you want to delete was displayed.
E
Deleting registered indoor unit or interlock between units.
- Press the F [Time selection(
CLOCK ON OFF
)] button two times in succession. The displayed indoor unit address or the interlock between units is deleted. When the information is deleted, the display shown below appears.
A
→→
0
→→
Page 54
- 52 -
(A)Deleting group registration information
<When completed normally>
- If there is a transmission error, registration is not deleted and
the display shown below appears. In this case, repeat the operations above.
<When an error occurs>
When deletion was completed normally,
is displayed at the unit type display. If a deletion error occurred,
is displayed at the unit type display. In this case, repeat the operations described above.
(B) When deleting interlocked registration
is displayed at the room temperature display.
is displayed at the room temperature display.
To return to the normal state, go to step 0.
(Alternate display)
(4) (A) Group registration and (B) Interlock registration of another group using an arbitrary remote controller
(A) Group registration and (B) Interlock registration of another group can be performed using an arbitrary remote controller. For a description of the operation procedure, see (B) Interlock registration of section [2] 1. Group setting/interlocking setting. Set the address No. as shown below.
(A) When performing group registration
Interlocked unit address ... Remote controller address No.
Indoor unit address........... Indoor unit address No. you want to control with the remote controller
(B) When performing interlock registration
Interlocked unit address ... LOSSNAY address No.
Indoor unit address........... Indoor unit address No. which is interlocked with LOSSNAY
2. Remote controller functions selection
In the remote controller function selection mode, three functions can be selected and changed. Select and change these functions, as required. For the operating instructions refer to (6) How to select the remote controller functions of 3 How to Operate in Instruction Book.
(A)Operation mode display selection mode (
AUTO mode heating/cooling display selection) When the AUTO mode was selected with the remote controller, the indoor unit is judged from the room temperature and heating or cooling is performed automatically. In this case, AUTO COOLING or AUTO HEA TING is displayed at the remote controller. However , only AUTO without
COOLING or HEATING can also be displayed.
(B)Room temperature display selection mode (
Room temperature display/no display selection)
Normally, the intake air temperature is displayed at the remote controller. However, no display can also be selected.
(C)
Set temperature range limit mode Ordinarily, the set temperature can be freely set over the 19
˚C to 30˚C range for cooling and dry and the 17˚C to 28˚C range for heating. However, for cooling and dry, the lower limit temperature and for heating, the upper limit temperature can be limited to a preset temperature. If the set temperature range is made higher for cooling and dry and is set lower for heating by this method, excessive cooling and heating can be prevented and energy can be saved.
CAUTION
When the normal set temperature adjustment range was changed using a remote controller connected to a simultaneous cooling/heating air condition with an AUTO mode, the AUTO mode cannot be selected with the [Mode selection] button.
””””
PAR-F27MEA
ON/OFF
FILTER
CHECK TEST
TEMP.
TIMER SET
CLOCK ON OFF
1
2
3
[Remote controller function selection mode transition]
[Remote controller OFF window display]
1
2 3
:Press and hold down the [CHECK] and
[Mode selection] buttons at the same time for 2 seconds
:[TEMP.
( )]
button
:[TEMP.
( )]
button
OFF window
Operation mode display selection mode
Room temperature display selection mode
Set temperature adjustment range limit mode (cool/dry)
Set temperature adjustment range limit mode (heat)
Remote controller function selection modes
23
4
11
32
32
32
Page 55
- 53 -
˚C
˚C
LIMIT TEMP.
˚C
LIMIT TEMP.
[Time selection ( ) (( ))] button
[Time selection ( ) (( ))] button
[PROCEDURE]
1. Set the air conditioner to the off state with the remote controller [ON/OFF] button. The remote controller display shifts to the OFF window display shown at the left.
2. When the [CHECK] and [Mode selection] b uttons 1 are pressed and held do wn at the same time for two seconds, the remote controller switches to the remote controller function selection mode and the OPERA TION MODE DISPLAY SELECTION MODE windo w appears. The other three modes
can be selected by operating the [TEMP.] ( ) button 23 or ( ) button . Display the mode whose function you want to change.
OPERATION MODE DISPLAY SELECTION MODE (When you want to change the AUTO mode display)
•“AUTO” “COOL/HEAT” flashes and “ON” or “OFF” lights. Each time the [Time selection ( ) or ( )] button 4 is pressed in this state, the “ON” and
OFF display is switched.
When ON was selected, “AUTO” “COOL” or AUTO” “HEAT” is displayed during AUTO mode operation.
When OFF was selected, only “AUTO” is displayed during AUTO mode operation.
[When set temperature adjustment range in cool/dry mode is 19 °C to 30 °C]
2) Each time the [Time selection (
) or ( )] button 4 is pressed, the lower limit temperature value is increased or decreased. Set it to the desired
set temperature adjustment range.
ROOM TEMPERATURE DISPLAY SELECTION MODE (When you want to change room temperature display/no display)
•“88 °C flashes at the room temperature display and ON or “OFF lights. Each time the [Time selection ( ) or ( )] button 4 is pressed in this state, the ON and “OFF” display is switched.
When ON was selected, the room temperature is continuously displayed in the ON window.
When OFF was selected, the room temperature is not displayed in the ON window.
SET TEMPERATURE RANGE LIMIT MODE (When you want to change the set temperature adjustment range)
1) Cool/dry mode temperature selection
COOL/DRY and “LIMIT TEMP. ” light on the display and the set temperature adjustment range in the cool (dry) mode is displayed. The lower limit temperature of the set temperature display flashes. This temperature value can be set and changed.
[Lower limit temperature adjustment range]: 19°C
30 °C (Upper limit temperature 30°C is fixed. Only the lower limit temperature
can be changed.)
[When set temperature adjustment range was set to 24 °C to 30 °C]
3) When the [TEMP . (
)] button 2 is pressed after the setting above, the remote controller s witches to the heat mode temperature selection windo w. HEAT and LIMIT TEMP.” light on the display and the heat mode set temperature adjustment range is displayed. The upper limit temperature value can be changed by pressing the [Time selection (
) or ( )] button 4, the same as cool/dry mode temperature selection. Upper limit temperature adjustment range: 17°C to 28 °C (The lower limit temperature 17°C is fixed. Only the upper limit temperature can be changed.)
3. At the end of selection of each function, release the remote controller function selection mode and display the OFF window b y pressing the [CHECK] and [Mode selection] buttons 1 at the same time for two seconds.
Perform this operation when you want to register the LOSSNAY, confirm the registered units, or delete the registered units controlled by the remote controller. The following uses indoor unit address 05 and LOSSNA Y address 30 as an e xample to describe the setting procedure.
[Setting Procedure] 1 Stop the air conditioner using the remote controller A [ON/OFF] button.
If the OFF display shown below does not appear at this time, step 2 cannot be performed.
2 Press and hold down the [FILTER] and cB [Louver] buttons at the same time for two
seconds. The display shown below appears. The remote controller confirms the registered LOSSNAY addresses of the currently connected indoor units.
Make this setting only when interlocked operation with LOSSNA Y is necessary with CITY MULTI models.) (This setting cannot be made with Mr. SLIM air conditioners.)
TIMER SET
PAR-20MAA
D
G
E
H
ON/OFF
FILTER
CHECK TEST
TEMP.
FUNCTION
CF
A
B
[3] Interlocking Setting that is Made on the MA Remote Controller
Lossnay interlocking setting
˚C
FUNCTION
Page 56
- 54 -
3 Registration confirmation result
- The indoor unit address and registered LOSSNAY address are displayed alternately.
- When LOSSNAY are not registered
4 If registration is unnecessary, end registration by pressing and holding down the B [FILTER] and c [Louver] buttons at the same time for two
seconds. If a new LOSSNA Y must be registered, go to step 1. Registration pr ocedure. If you w ant to confirm another LOSSNAY , go to step 2. Confirmation
procedure. To delete a registered LOSSNA Y, go to step 3. Deletion procedure.
< 1. Registration procedure >
Set the address of the LOSSNAY and the indoor unit connected by the remote controller you want to register using the D [TEMP. (
) and ( )]
buttons. (01 to 50) Set the address of the LOSSNAY you want to register using the E [TIMER SET (
) and ( )] buttons. (01 to 50)
Press the F [TEST] button, and register the set indoor unit address and LOSSNAY address.
- Registration end display The indoor unit address and IC and LOSSNAY address and LC are alternately displayed.
- Registration error display If the address was not correctly registered, the indoor unit address and registered LOSSNAY address are alternately displayed.
Cannot be registered because the registered indoor unit or LOSSNAY does not exist. Cannot be registered because another LOSSNAY was registered at the registered indoor unit.
< 2. Confirmation procedure >
Set the address of the indoor unit connected by the remote controller whose LOSSNAY you want to confirm using the D [TEMP.]
( ) and ( )
buttons. (01 to 50)
Press the G [Timer selection] button and confirm the LOSSNAY address registered at the set indoor unit address.
- Confirmation end display (When LOSSNAY is connected.) The indoor unit address and IC and registered LOSSNAY address and LC are alternately displayed.
FUNCTION
FUNCTION
<Indoor unit address and indoor unit display>
<LOSSNAY address display and LOSSNAY display>
Indoor unit address LOSSNAY address
FUNCTION
FUNCTION
FUNCTION
FUNCTION
<Indoor unit address>
FUNCTION
- Confirmation end display (When LOSSNAY is not connected.) Registered indoor unit address does not exist.
FUNCTION
FUNCTION
FUNCTION FUNCTION
< 3. Deletion procedure >
Use this procedure when you want to delete registration of indoor units connected by the remote controller and LOSSNAY.
0 Confirm (see 2. Confirmation procedure) the LOSSNAY you want to delete and display the indoor units and LOSSNAY confirmation results.
A Press the H [TIMER SET] button twice and delete registration of the LOSSNAY registered at the set indoor unit.
- Deletion end display Indoor unit address and “– –” and registered LOSSNAY address and “– –” are alternately displayed.
- Deletion error display When deletion was not performed properly.
[4] Switching to the built-in Thermo on the remote controller
1. Selecting the position of temperature detection by the indoor unit (Factory setting: SW1-1 “OFF” )
To use the built-in sensor in the remote controller, set the SW1-1 on the indoor unit to ON. Some remote controllers are not equipped with a built-in sensor.Use the built-in sensor on the indoor unit
instead.
When using the built-in sensor on the remote controller, install the remote controller where room tempera-
ture can be detected.
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
FUNCTION
Page 57
- 55 -
< Symbol explanation >
NOTE:The broken lines indicate field wiring.
black
LD2
4
4
L1L2L3
N
L1L2L3
N
1
5
red
white
black
red
white
blue
white
X01
black
white
red
white
red
yellow
red
orange
purple
black
gray
brown
white
L3L2L1
black
white
red
MC2
U
W
V
Maintenance
setting
Function
setting
Function setting
Function setting
52F
21S
4b
21S
4a
SV
5d
SV3
21S
4c
SV
5c
SV
5b
SV1
52
C1
shield
PE
TH2
CN03
red
3 2 1
X04
3
123
123
4
123
123
MF2
Fan motor
(Heat exchanger)
UVWUV
W
MF1
MF3
Fan motor
(Heat exchanger)
191
1414
191
Compressor ON/OFF
NIGHT MODE
1
or STEP DEMAND
SNOW
T01
(Transformer)
CNTR
123
123
CNAC3
black
AUTO CHANGEOVER
HEAT/COOL
321
CN3N
blue
2
TH8
LEV1
1 2 3 4 5 6
CNLVB
red
63H2
63H1
12312
3
CN04
CN05
INDOOR/OUTDOOR
TRANSMISSION LINE
432
12345
6
CNRT1
red
CNOUT1
yellow
5 4 3 2 1
51C2
52C2
13 14
95 96
RELAY-BOARD
CNRT2
12345
CNOUT2
CH12
A2 A1
A2 A1
123
4
X2
X3
CN51C2
CN52C2
blue
CN52F
yellow
CNCH
blue
123
X1
123
123
black
white
red
Motor
(Compressor)
52F
51C2
52C2
F12
AC660V
50A F
F11
AC660V
50A F
CN13
TH12
4 3 2 1
1234567
CNRS3B
CNINV
LED1 operation
LED2 error
65432
1
Trouble
Compressor ON/OFF
14
ON
OFF
SW2
1234567
CNRS3A
1234567
8
CN3S
red
CNVCC1
CN51
CN3D
321
54321
SW1
321
12V
SW2SW3SW4
LD1
ON
ON
ONOFFOFF
ONOFF ONOFF OFF
SW5
11
Control circuit board
(MAIN BOARD)
10
1
10
1
10
1
10 10
SWU2
Address setting
SWU1
1
CN52C
yellow
CN38
green
CN36
CN35
red
CN33
X02
CN32
X01
X09
X08
X03
CNS2
blue
CNS1
blue
CH11
123
Z20
123
12312
3
12345
6
123456789
2 1 2 1 3 2 12 1 3 2 1 3 2 18 7 6 5 4 3 2 1
TH6
TH5TH7 TH11
63LS
R22
63HS
R23
1 2 3 1 2 3
CN02
CNTYP1
red
CNL
black
CN01
CNTYP4 CNH
CNTYP5
CN20
CN21
blue
F01
250VAC
6.3A T
F02
250VAC
6.3A T
1 2 3 4 5
1 2 3
L1L2L3
N
TB1
(Terminal Block)
Power source
3N~
380/400/415V
50/60Hz
black
red
52C1
DCL
C2
red
1 2 3 4
DS
(Diode stack)
DCCT
white
black
432
1
CNDC2
N
IPM
P
C4
MC1
Gate amp board
(G/A BOARD)
ACCT
-W
V
ACCT
ACCT-U
X52
U V W
FAN control board
(FAN BOARD)
CNVDC
1 2 3
C1
R4
R3
R1
R2
ACNF
(Noise Filter)
E
FILTER
BOARD
1234567
8
1234567
8
CNFG
blue
1 2
1 2
L1L2
1 2
CNL1CNL2
CNOUT
green
CNIN
blue
C5
ZNR4
SWU3
012
12345
6
X05
CN34
red
X07
X06
CN15V1
CNDC1
black
CNDR1
123
4
1 2 3 4 5 6 7 8
CNVCC1
1 2 3 4 5
CNAC2
CNFAN
red
SW2SW1
1 41 6
ON
OFF
ON
OFF
LED1 operation
LED2 error
321
CNFG
blue
1
2
CNCT2
blue
4321123
4
CNTH
green
1 2
THHS1
1 2 3 4 5 6 7
1 2 3 4
CNCT
CNRS1
Power circuit board
(INV BOARD)
CNDC2
black
CN15V2
CNDR2
TB3
M1M2SM2M1
TB7
1 2 3
1 2
shield
F02
700VDC
2A T
red
white
black
blue
black white red
detection
circuit
detection
circuit
detection
circuit
red
white
black
blue
red
black
Motor
(Compressor)
F01
250VAC
2A T
Refer to the service handbook
about the switch operations.
U
W
CENTRAL CONTROL
TRANSMISSION LINE
CNRS2
1234567
Inverter controller box
)
+
+
+
-
~~~
52
C2
SW5-8SW5-7
OFFOFF
OFFON
ONON
ACCT
AC Current Sensor
DCCT
DC Current Sensor
DCL
DC reactor (Power factor improvement)
52C1
Magnetic contactor (Inverter main circuit)
52C2
Magnetic contactor (No.2 Compressor)
51C2
Overload relay (No.2 Compressor)
PUHY-P450/500/550/600/650YGM-A
4
PUHY-P450/500/550/600/650YMM-A
PUHY-P400/650YSM-A
PUHY-P✻✻✻YGM-A
PUHY-P✻✻✻YMM-A
PUHY-P✻✻✻YSM-A
CN3N 1-3P
OPEN
SHORT
Auto changeover:OFF
Auto changeover:ON
COOL
HEAT
1-3P
OPEN
SHORT
ON/OFFONOFF
1-2P
OPEN
SHORT
MODE
OFF
ON
52F
Magnetic contactor (Fan motor)
MF3
Fan motor (Radiator panel)
CH11,12
Crank case heater (Compressor)
21S4a,b,c
4-way valve
SV1,3
Solenoid valve (Discharge-suction bypass)
SV5b,c
Solenoid valve (Heat exchanger capacity control)
SV5d
Solenoid valve
LEV1
Electronic expansion valve(SC coil)
TH11,12
Thermistor
Discharge pipe temp. detect
TH2
Gas pipe temp.detect (Hex outlet)
TH5
Pipe temp.detect (Hex outlet)
TH6
OA temp.detect
TH7
liquid outlet temp.detect at Sub-cool coil
TH8
bypass outlet temp.detect at Sub-cool coil
THHS1
Radiator panel temp. detect
63H1,2
High pressure switch
63HS
High pressure sensor
63LS
Low pressure sensor
L1,L2
Choke coil (Transmission)
Z20
Function device
Earth terminal
Symbol Name
<Difference of appliance>
Appliance (include"-BS")
Difference(not existed)
[3:Set up of a function(SW5-7,5-8)
[2:Auto changeover (CN3N 1-2P,1-3P)
SW4-7:ON (8STEPS DEMAND)
8 STEPS
DEMAND
OC
side
CN3D
OS(KU) side CN3D
100%
50%
50%
0%
88%
75%
38%
25%
88%
38%
75%
25%
75%
63%
63%
50%
CN3N 1-2P
OPEN SHORT
[1: Function according to switch operation.
(SW4-7,CN3D 1-2P,and CN3D 1-3P)
SW4-7:OFF (Compressor ON/OFF and
NIGHT MODE)
CN3D Compressor CN3D NIGHT
OPEN
OPEN
OPEN
SHORT
SHORT
OPEN
SHORT
SHORT
OPEN
SHORT
OPEN
SHORT
1-2P
1-2P
1-3P
1-3P
Electrical Wiring Diagram
[1] PUHY-P850,900,950,1000,1050,1100,1150,1200,1250YGM-A
Page 58
- 56 -
Terminal
block
CN1
DSA1 ZNR1
S.A.B.
3
2
1
M-NET TRANSMISSION
LINE
(OUTDOOR UNIT SIDE)
M-NET TRANSMISSION
LINE
ADDITIONAL INDOOR
UNIT SIDE
Breaker (3A)
Power source
220-240V~/N
50/60Hz
NF
ZNR2
E
3
4
2
1
L
AC250V
2A F
TB1
PE
N
BOX BODY
BOX BODY
BOX BODY
S.P.S.
L
CN2
CN1
BOX BODY
12
3 4
21
2
1
TB3
TB2
S
B
A
A
B
S
2
1
2
1
CN2
CN4
CN3
C.B.
CN1
( )
1
2 3 45
M-NET transmission line
(Outdoor unit side)
M-NET transmission line
(Additional indoor unit side)
Surge Absorber
DSA1
Varistor
ZNR1,2
Choke coil(Transmission)
L
Earth terminal
Noise Filter
Surge absorber board
Switching Power Supply
Circuit board
Fuse
NAMESYMBOL
SYMBOL EXPLANATION
Power source
TB3
TB2
TB1
F
NF
S.A.B.
S.P.S.
C.B.
[2] Power Dispatching Extension Unit for the Transmission Lines
Page 59
SV5b
TH5
TH8
TH11
TH6
21S4b
<PUHY-P-YSM-A(-BS)>
21S4c 21S4a
TH2
TH7
TH12
CJ3
CJ1
CP2
CP1
ST7
ST6
ST5
SV1
CV1 CV2
O/S O/S
CJ2
Stop-valve
Liquid
distributor
Oil balance pipe
Acc
Oil
tank
63H1
63HS
63H2
63LS
LEV1 ST8
CP3 ST9
ST2 SV5dBV2
SV3
ST10ST11ST12ST13
Drier
SCC
(HIC cycle)
Comp1 Comp2
HEX1a
(F)
HEX2a
(B)
HEX1b
(F)
HEX2b
(B)
SV5c
ST1 BV1
SV5b
TH5
TH8
TH11
TH6
21S4b
<PUHY-P-YMM-A(-BS)>
21S4c 21S4a
TH2
TH7
TH12
CJ3
CJ1
CP2
CP1
ST7
ST6
ST5
SV1
CV1 CV2
O/S O/S
CJ2
Stop-valve
Acc
Oil
tank
63H1
63HS
63H2
63LS
LEV1 ST8
CP3 ST9
ST2 SV5dBV2
SV3
ST10ST11ST12ST13
Drier
SCC
(HIC cycle)
Comp1 Comp2
HEX1a
(F)
HEX2a
(B)
HEX1b
(F)
HEX2b
(B)
SV5c
ST1 BV1
Gas
distributor
<Indoor unit>
- 57 -
§§
Refrigerant Circuit
[1] Refrigerant Circuit Diagram
Page 60
Name Notes Function Specification Check method
Symbol
(function)
1
273+t
Compres­sor
High
-pressure sensor
Pressure switch
Thermistor
MC1
63HS
R
120=7.465k
R25/120=4057 Rt =
7.465exp{4057( - )}
Resistance value check
Resistance value check
1
393
1
273+t
R0=15k R0/80=3460 Rt = 15exp{3460( - )}
1
273
Pressure 0~4.15MPa Vout 0.5~3.5V
0.071V/0.098MPa Pressure [MPa] =1.38Vout[V]-0.69
Gnd (Black) Vout (White) Vcc (DC5V) (red)
Con­nector
63HS
1
123
2 3
Adjusts the volume of circulating re­frigerant by controlling the operating frequency with the operating pres­sure.
Inverter compressor Low-pressure shell scroll type Winding resistance
10˚C : 0.560 20˚C : 0.583 30˚C : 0.606
MC2
Obtains the constant volume of circu­lating refrigerant when the load in­creases, which MC1 cannot adjust the load level.
Commercial power supply compressor Low-pressure shell scroll type Winding resistance
10˚C : 1.903 20˚C : 1.981 30˚C : 2.059
63H1 63H2
TH11, 12 (Discharge)
TH5 (Piping temp­erature)
TH6 (Outdoor air temperature)
THHS Inverter heat sink temperature
Heat sink
1 Detects high pressure 2 Protects high pressure
1 Controls frequency 2 Controls defrost during heating
operation
3 Controls LEV1 by detecting sub
cool at the heat exchanger outlet, using HPS data and TH5 reading.
1 Detects discharge temperature 2 Protects high pressure
1 Detects outdoor temperature 2 Controls fan operation
TH7 TH8
Controls LEV1, using TH5, TH7, and TH8
Controls inverter cooling fan, using THHS temperature.
0˚C : 698k 60˚C : 48k 10˚C : 413k 70˚C : 34k 20˚C : 250k 80˚C : 24k 30˚C : 160k 90˚C : 17.5k 40˚C : 104kΩ 100˚C : 13.0kΩ 50˚C : 70k110˚C : 9.8k
0˚C : 15k25˚C : 5.3k 10˚C : 9.7k30˚C : 4.3k 20˚C : 6.4k40˚C : 3.1k
1
273+t
R0=17k R
25/120=4170
Rt = 17exp{4170( - )}
1
323
0˚C : 181k25˚C : 50k 10˚C : 105k30˚C : 40k 20˚C : 64k40˚C : 26k
4.15MPa Set to OFF
1 Detects high pressure 2 Regulates frequency and protects
high pressure.
Low
-pressure sensor
63LS
Pressure 0~1.7MPa Vout 0.5~3.5V
0.173V/0.098MPa Pressure [MPa] =0.566Vout[V]-0.283
Gnd (Black) Vout (White) Vcc (DC5V) (red)
Con­nector
63LS
1
123
2 3
1 Detects low-pressure 2 Protects low-pressure
- 58 -
[2] Functions of Principal Parts
1. Outdoor Unit
Page 61
Name FunctionNotes Specification Check method
Symbol
(function)
Solenoid valve
Linear expansion valve
SV1 Discharge­suction bypass
SV3 Discharge­suction bypass
SV5b, SV5c Heat exchanger capacity control
LEV1 (SC coil)
21S4b
21S4c
1
High/low pressure bypass at starting and stopping, and capacity control during low-load operation
2 High-pressure rise suppression Provides compressor protection
when Compressor No. 2 is at a stop
Controls outdoor unit heat exchanger capacity.
SV5d
Prevents refrigerant flow to the stop unit.
Adjusts the volume of bypass flow from the compressor unit during cool­ing operation.
Heats refrigerants in the compressor.
4-way valve
21S4a
Switches between cooling and heat­ing cycles.
Switches between cooling and heat­ing cycles. Controls outdoor unit heat exchanger capacity.
Switches between cooling and heat­ing cycles. Controls outdoor unit heat exchanger capacity.
AC220~240V Open when energized Closed when not energized
AC220
~240V Closed when energized Open when not energized
DC12V Opening of stepping motor driving valve 0-480 pulses (direct driven type)
Same as indoor LEV. The resistance value is not the same as that of the indoor LEV. (Refer to the section on LEV troubleshoot­ing.)
Resistance value check
Continuity check with a tester
Cord heater AC220~240V CH11,CH12·····1280 45W
AC220~240V De-energized : cooling cycle Energized : heating cycle
AC220~240V De-energized : cooling cycle (Compressor unit heat ex­changer capacity 100%) Energized : cooling cycle (Compressor unit heat ex­changer capacity 50(25)%) or heating cycle
AC220
~240V De-energized : cooling cycle (Heat exchanger unit heat exchanger capacity 100(50)%) Energized : cooling cycle (Heat exchanger unit heat exchanger capacity 25%) or heating cycle
Continuity check with a tester
CH11, 12 Crankcase heater
Heater
- 59 -
Page 62
1
273+t
R0=15k R0/80=3460 Rt = 15exp{3460( - )}
1
273
0˚C : 15k30˚C : 4.3k 10˚C : 9.7k40˚C : 3.1k 20˚C : 6.4k 25˚C : 5.3k
Name FunctionNotes Specification Check method
Symbol
(function)
Linear expansion valve
Thermistor
LEV
TH1
(Suction air
temperature) TH2 (Piping
temperature)
TH3 (Gas-side piping temperature)
TH4
(Outdoor air
temperature) Temperature
sensor
(Indoor
air temperature)
1 Adjusts superheat at the indoor
heat exchanger outlet during cooling
2 Adjusts subcool at the indoor heat
exchanger outlet during cooling
1 Indoor unit control (Anti-
freeze/heat adjustment)
2 LEV control during heating
operation (subcool detection)
Indoor unit control (Thermo)
LEV control during cooling operation (superheat detection)
Indoor unit control (Thermo)
Indoor unit control (Thermo)
DC12V Opening of stepping motor driving valve 0-1400 pulses
Resistance value check
Refer to the section on continuity test with a tester Continuity between white-red-orange Continuity between yellow-brown-blue
YellowMBlueBrown
White
Red
Orange
- 60 -
2. Indoor Unit
Page 63
- 61 -
SW4
SW5
1 2 3 4
1 2 3 4
5
5
6
6
7
7
8
8
9
9
– Pump down operation Heating Tcm
Night mode/Step demand Night mode Demand function Before power on
SW3
1 2 3 4
5 6 7
8 9
10
10
10
Not connected to the centralized control
Ordinary control
Ordinary control
Ordinary control
50 minutes
– SW3-2 invalid Stops all ICs
-8˚C 7˚C
Ordinary control 49˚C
– –
– –
Before power on
Unit model selection Refer to the next page Before power on
Before power on
Before power on
Anytime after power on (When switched from OFF to ON)
Anytime after power on (Except during initial start up mode/becomes ineffective 2 hours after compressor start up)
Anytime after power on (When switched from OFF to ON)
– Anytime after power on After power on and when SW3-1 is on. Anytime after power on Anytime after power on (except during
defrost operation)
After power on and while compressor is stopped Anytime after power on
– –
– –
Switch Function
Function according to switch setting Switch setting timing
OFF ON OFF ON
SWU
SW2
1~2
1
2
3
4
5 6 7
8
9
10
Unit address setting
Centralized control switch
Deletion of connection information
Deletion of error history
Refrigerant amount adjustment
Forced defrost
Defrost timer setting
– Test run: valid/invalid Test run: ON/OFF Defrost start temperature Defrost end temperature
Set to 00 or 51-100 with the dial switch
Anytime after power on
SW1
1~10
For self-diagnosis/operation monitoring
Refer to the LED monitor display on the outdoor unit board
10 minutes after compressor start up
Anytime after power on (When switched from OFF to ON)
Connected to the centralized control
Deletion
Deletion of IC/OC error history
Storage of IC/OC error history
Refrigerant amount adjustment mode
––
––
––
Start forced defrosting
90 minutes
– SW3-2 valid Test runs all ICs
-5˚C 12˚C
– Pump down operation 53˚C
––– ––
––
––
Emergency operation valid/invalid
Valid
Anytime after power on
Invalid
––
–– – –– – –– – –– – ––
System setting for 34HP or more
32HP or less Before power on34HP or more
OC/OS model setting switching
OC (main unit) Before power onOS (sub unit) –– – ––
Note1 : All are set to OFF at factory shipment. Unless otherwise specified, set the switch to OFF where indicated by “ ––,” which may be set to a certain setting for a reason.
Note2 : : OC/OS require individual setting.
: OC/OS require the same setting.
OC : Main unit, OS : Sub unit
Unit setting(Note 2)
OC OS
––
Control
[1] Dip Switch Functions and Their Factory Settings
1. Outdoor unit
(1) MAIN board
Page 64
- 62 -
DipSW3-9
DipSW5-1
OFF ON
OFF Standard specification
ON
High-static pressure (60Pa) specification
Standard specification
High-static pressure (30Pa) specification
Switch Function
Function according to switch setting Switch setting timing
OFF ON OFF ON
SW1
SW2
1
2 3 4
5 6 1
2 3 4
Enabling/disabling the following error detection functions: ACCT, DCCT sensor circuit error (530X Detail No. 115, 116) ACCT, DCCT sensor error (530X Detail No. 117, 118) IPM open/Disconnected CNCT2 (530X Detail No. 119) Detection of erroneous wiring (530X Detail No. 120)
– –
Inverter address
– – –
Error detection enabled
– –
0
– – –
Error detection disabled
– –
1
– – –
Anytime after power on
– –––– –––– ––––
Always leave it to ON
Note 1 Except for SW2-1, all are set to OFF at factory shipment.
Unless otherwise specified, set the switch to OFF where indicated by ––, which may be set to a certain setting for a reason.
Note 2 Leave SW1-1 off during normal operation. If it is turned on, errors cannot be detected and the unit may be damaged.
Switch Function
Function according to switch setting Switch setting timing
OFF ON OFF ON
SW2 1
2 3 4
Inverter address
– – –
0
– – –
5
– – –
Always leave it to ON
Note 1 Except for SW2-1, all are set to OFF at factory shipment.
Unless otherwise specified, set the switch to OFF where indicated by ––, which may be set to a certain setting for a reason.
(2) INV board (Comp.unit)
(3) FAN board
Page 65
- 63 -
SW1
1 2 3 4 5 6 7 8
9
10
1 2
3 4
5
7 8 9
10
DIP SW1, 3
Switch Function
Function according to switch operation
Switch set timing
Remarks
OFF ON OFF ON Room temp. sensor position Clogged filter detect. Filter duration OA intake Remote display select. Humidifier control Heating thermo. OFF airflow Heating thermo. OFF airflow Power failure automatic
return Power source start/stop Model selection
Louver Vane
Vane swing function Vane horizontal angle
Heating 4K up
– –
Indoor unit inlet
None
100h
Ineffective
Fan output display
At stationary heating
Very low speed
SW1-7 setting
Ineffective Ineffective
Heat pump
None None
None
1st setting
Effective
– –
Built in remote controller
Provided
2500h
Effective
Thermo. ON signal display
Always at heat.
Low speed Set airflow
Effective Effective
Cooling only
Provided Provided
Provided
2nd setting
Ineffective
– –
Always ineffective for PKFY-P.VAM
Not provided for PKFY-P.VAM
Ineffective (ON) setting for floorstanding
Cooling capacity saving for PKFY-P. VAM, effective/ineffective
  
At unit
stopping
(at remote
controller
OFF
)
SW3
Note:
When both SW1-7 and SW1-8 are being set to ON, the fan stops at the heating thermostat of OFF.
Model P20 P25 P32 P40 P50 P63 P71
Capacity code
4 5 6 8 101314
(model name)
SW2 setting
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Model P80 P100 P125 P140 P200 P250
Capacity code
16 20 25 28 40 50
(model name)
SW2 setting
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Setting of DIP SW2
6 Vane angle set for cooling Down blow B, C Horizontal Always down blow B,C for PKFY-P.VAM
2. Indoor unit
Page 66
- 64 -
Setting of DIP SW5
Option
Standard
220V 240V
ON
ON : 220V
230V
OFF : 240V
OFF
(PLFY-P·VLMD-E)
Switch Function Operation by switch Switch set timing
Ceiling height setting
External static pressure setting
Setting of air outlet opening
Airflow control
For other models, change the setting of static pressure by replacing the connector.
Set to the option to install the high efficiency filter.
Always after powering
Always after powering
Always after powering
Always after powering
Ceiling height
33.5m
22.8m
12.3m
123
2-way
4.0m
(3.3m)
4.2m
(3.5m)
3-way
3.6m
(3.0m)
4.0m
(3.3m)
4.2m
(3.5m)
4-way
Values in the parenthese are for P32~80 types.
3.2m
(2.7m)
3.6m
(3.0m)
4.2m
(3.5m)
SWB SWA
3 2 1
(PCFY-P-VGM-E)
(PDFY-P20 ~ 80VM-E, PEFY-P20 ~ 80VMM-E)
3 2 1
100Pa
50Pa 30Pa
(PLFY-P-VAM-E)
2-way 3-way 4-way
(PLFY-P-VAM-E, PCFY-P-VGM-E, PKFY-P-VGM-E, PDFY-P-VM-E)
SWA
SWA
SWB
SWC
Page 67
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0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
1ON234
Before powering
Before powering
Before powering
Before powering
Removing the cover shows switches at the lower part of the remote controller unit. By operating these switches, the
controller main/sub, and other function will be set. In normal case, do not change the setting except No.1 switch used to set the main/sub. (All setting at factory shipment are "ON."
Set the address of the remote controller with the rotary switch.
Remote controller unit
Switch
Function ON OFF Action by switching Switch set timing
1
Remote controller
Main Sub
main/sub
2
At powering of Normal Timer mode remote controller start up start up
3
Cooling/heating display
Yes No
Yes No
at automatic setting
4
Inlet temperature display
Sets one to "Sub" when connecting 2 sets in 1 group.
Sets to "Timer mode start up" so desired at power failure return when the schedule timer is connected.
Sets to "No" when not desiring to display "Cooling" or "Heating."
Sets to "No" when not desiring to display inlet temperature.
Address setting range Setting method Main remote controller 101 ~ 150 Set to the lowest indoor main unit address + 100. Sub remote controller 151 ~ 200 Set to the lowest indoor main unit address + 150.
Setting of rotary switch Address No.
01 ~ 99 101 ~ 199 being added with 100
00 200
Note : To set addresses, use a precision screwdriver [(–), 20mm (w)], and apply load less than 19.6N.
Operating with a method other than above may damage the rotary switch.
The address No. that can be set with ME remote controller is limited to 101 ~ 200.
The position of 100 will automatically be fixed to [1] when setting to "01 ~ 99", while it will automatically be fixed to [2] when setting to "00."
At factory shipment, the rotary switch was set to 01.
10 digits 1 digit
(left) (right)
Selector switch Remote controller unit
Remote controller unit
Rotary switch
Example: In case of address 108
remote
3. Remote controller
(1) MA remote controller (PAR-20MAA)
(2) ME remote controller (PAR-F27MEA)
Page 68
- 66 -
Primary
unit
Secondary
unit
Display
SW1
ON
134679102
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
58
Compressor name
Primary unit
Secondary unit
No.1 compressor No.2 compressor No.1 compressor No.2 compressor
Compressor type Inverter compressor Commercial power supply compressor Inverter compressor Commercial power supply compressor
Primary unit
Secondary unit
No.1 compressor No.2 compressor No.1 compressor No.2 compressor
OFF OFF OFF
Little frequency
Medium frequency
Little frequency
Medium frequency
Little frequency Large frequency
Little required performance
Large required performance
OFF ON ON
ON ON
OFF
OFF
Little frequency
Medium frequency
Little frequency
OFF OFF OFF
OFF
Large frequency
[2] Controlling the Outdoor Unit
1. Relation between sub/main unit and primary/secondary unit (Rotation control)
Sub unit and main unit are the proper names of the unit, and primar y unit and secondar y unit are the names to distinguish the sub/main unit when controlling the units.
The sub unit will be a primar y unit and the main unit will be a secondar y unit in the initial stage, however, the primary-secondar y relation will be switched every more than 2 operation hours. (Rotation control)
Rotation control is performed while all the compressors are stopping. (As long as the compressor is r unning, even if more than 2 hours have passed, the relation between primary unit and secondar y unit will not change.)
Rotation control is also performed under 10.Control at initial star tup or 11.Emergency operation mode.
To check whether the unit is primary or secondar y, check the self-diagnosis switch (SW1).
2. Initial control
When the power is turned on, the initial processing of the microcomputer is given top priority.
During the initial processing, control processing of the operation signal is suspended. The control processing is
resumed after the initial processing is completed. (Initial processing: processing of the data inside the microcomputer and initial setting of each LEV opening, requiring up to approximately 2 minutes.)
During the initial processing, the LED monitor on the outdoor units MAIN board displays S/W version”, refrig- erant type, unit type and capacity, M-NET addressin turn every second.
3. Compressor capacity control
(1) Compressor type
The following types of compressors are equipped.The capacity control is performed by changing the number of compressors in operation and changing frequency of the inverter compressor.
(2) Capacity control standard
Capacity control is performed to make evaporating temperature (Te) 0˚C (evaporating pressure 0.71MPa) dur- ing cooling operation, and to make condensing temperature (Tc) 49˚C (condensing pressure 2.88MPa) during heating operation.
Capacity control is basically performed every 30 seconds. (except for (4)Compressor capacity limit is applied.)
(3) Capacity control method
Change the number of compressors in operation and frequency of the inverter compressor according to the required performance.
Note1: When frequency of the primary No.1 compressor exceeds 85Hz, the secondary No.1 compressor will start. Note2: Frequency of the primary No.1 compressor and that of the secondary No.1 compressor are almost the same. Note3:The pr imar y No.2 compressor and the secondary No.2 compressor turn ON or OFF almost at the same time.
Page 69
- 67 -
(4) Compressor capacity limit
Compressor capacity is limited according to the operation status of the unit. 1 ON/OFF limit
When the compressor turns off once, it will be OFF for 3 minutes under any circumstances.
2 Pressure rise limit
When high-pressure pressure (63HS) of the primary or the secondar y unit exceeds 3.68MPa, frequency drops every 30 seconds.
3 Pressure drop limit
When low-pressure pressure (63LS) of the primary or the secondary unit is 0.23MPa or less, compressor frequency does not rise.
4 Discharge temperature rise limit
When discharge temperature (TH11, TH12) of the compressor in operation exceeds 110˚C, frequency drops every 30 seconds.
5 Discharge temperature drop limit
When discharge superheat (TH11-Tc, TH12-Tc) is 5K or less, compressor frequency does not rise.
(5) Minimum/Maximum frequency
Compressor minimum frequency is 20Hz. (only the primary No.1 compressor is operation)
Compressor maximum frequency is shown as below.
P1250
P1200
P1150
360Hz
340Hz
344Hz
318Hz
60Hz 120Hz 60Hz 350Hz 115Hz 60Hz
P1100
P1050
P1000
P950
P900
P850
332Hz
312Hz
296Hz
294Hz
280Hz
262Hz
276Hz
262Hz
250Hz
248Hz
232Hz
216Hz 230Hz
218Hz
Outdoor
unit model
Power supply
frequency
Total
frequency
Cooling operation
Primary unit
No.1
compressor
No.2
compressor
No.1
compressor
No.2
compressor
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
120Hz
112Hz
116Hz
99Hz
106Hz
88Hz
97Hz
80Hz
88Hz
71Hz
81Hz
65Hz
74Hz
56Hz
65Hz
48Hz
59Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
120Hz 60Hz
120Hz
112Hz
116Hz
99Hz
106Hz
88Hz
97Hz
80Hz
88Hz
71Hz
81Hz
65Hz
74Hz
56Hz
65Hz
48Hz
59Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
340Hz
330Hz
326Hz
318Hz
314Hz
306Hz
302Hz
288Hz
284Hz
272Hz
274Hz
258Hz
258Hz
246Hz
244Hz
234Hz
234Hz
120Hz
105Hz
113Hz
99Hz
107Hz
93Hz
101Hz
84Hz
92Hz
76Hz
87Hz
69Hz
79Hz
63Hz
72Hz
57Hz
67Hz
Secondary unit
Total
frequency
Primary unit
No.1
compressor
No.2
compressor
No.1
compressor
No.2
compressor
Secondary unit
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
115Hz 60Hz
120Hz
105Hz
113Hz
99Hz
107Hz
93Hz
101Hz
84Hz
92Hz
76Hz
87Hz
69Hz
79Hz
63Hz
72Hz
57Hz
67Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
60Hz
50Hz
Heating operation
4. Control at start-up
When star ting up a compressor, start the No.1 compressor first. However, to switch the 4-way valve properly when starting a compressor during heating operation, star t the secondar y No.1 compressor for up to 1 minute simultaneously with the start of the primar y No.1 compressor.
The upper limit of frequency during the first 3 minutes of the operation is 50Hz.
When the power is turned on, normal operation will star t after the initial start-up mode (to be described later)
has been completed (with a restriction on the frequency).
Page 70
- 68 -
No.1 Compressor
Stopped Stopped OFF
In operation Stopped ON In operation In operation OFF
No.2 Compressor SV3
(2) Bypass Valve (SV3) (ON = Open)
The opening SV3 is controlled by the configuration of No.1 and No.2 compressor operations.
ON for 4 minutes
ON for 2 minutes
Always ON. (Exception : OFF when HPS-LPS 0.2MPa)
ON for 3 minutes. (Exception : OFF when HPS 0.2MPa)
Always ON
Always OFF during cooling operation and always ON
during heating operation when running an oil-recovery operation after running a
continuous operation at low frequency.
When low pressure (LPS) drops below 0.23 MPa.
When low pressure (LPS) exceeds
0.38 MPa.
When Pd exceeds 3.77 MPa
When Pd is or below 3.43 MPa and 30 seconds has passed
SV1
Operation Timing
ON (Open) OFF (Close)
At No. 1 compressor start up or at No. 2 compressor start up
After the restoration of thermo or 3 minutes after restart
During cooling or heating operation with the compressor stopped
After the operation has stopped During defrost operation
(See figure
1 below)
During oil-recovery operation
During an operation with the compressor running at 30Hz When low pressure (LPS) drops (After 3 minutes have past since start up)
When high pressure (Pd) rises
[ Example of an SV1 operation ]
Start up
Thermo. Thermo. Defros-
ting Time
Stop
OFF ON
Compressor
Bypass solenoid
valve (SV1)
(4-minute)
(2-minute) (8-minute) (3-minute)
5. Bypass control
Bypass solenoid valves (SV1, SV3), which bypass the high- and low- pressure sides, operate in the following manner.
(1) Bypass solenoid valve (SV1) (ON = Open)
6. Outdoor fan (outdoor heat exchanger) capacity control
(1) Capacity control standard
Outdoor fan (outdoor heat exchanger) capacity control is performed to make condensing temperature (Tc) out­door temperature +10˚C (TH6+10˚C) during cooling operation and to make evaporating temperature (Te) 0˚C (evaporating pressure 0.71MPa) during heating operation.
Capacity control is basically performed every 30 seconds.
Page 71
Operation
mode
Heat exchanger
capacity
Number of fan
Fan inverter
control
4-way valve 2-way valve
21S4a 21S4b 21S4c
SV5b
(4)
SV5c
(4) 25%(1) 50%(2)
100% 100% 100%
Cooling
1(3) 1(3)
2 2 0
10~100% 10~100% 10~100% 10~100%
0%
OFF OFF OFF
ON
OFF
ON ON
OFF
ON
OFF
ON OFF OFF
ON OFF
ON
ON OFF OFF OFF
ON OFF OFF OFF OFF
Heating Defrost
Primary unit
Defrost operation Defrost operation
Secondary unit
Stopped
Stopped Stopped
No.1
compressor
No.2
compressor
Compressor
frequency
The same
regardless of the
model
50Hz 60Hz
67
Hz
57Hz
50Hz 60Hz
Power
supply
frequency
No.1
compressor
No.2
compressor
Power supply
frequency
50Hz 60Hz
No.1
compressor
No.2
compressor
50Hz 60Hz
67
Hz
57Hz
50Hz 60Hz
Power supply
frequency
Outdoor fan
SV1
SV3 21S4a 21S4b
21S4c
SV5a SV5b
SV5c SV5d LEV1
Stopped
ON
ON OFF OFF OFF OFF OFF OFF OFF
480 pulse
Stopped
ON
ON OFF OFF OFF OFF OFF OFF OFF
480 pulse
Stopped
OFF OFF OFF OFF OFF OFF OFF OFF
ON
0 pulse
- 69 -
(2) Capacity control method
The primar y outdoor fan (outdoor heat exchanger) capacity and the secondary outdoor fan (outdoor heat exchanger) capacity are almost the same.
The outdoor fan stops while the compressor is stopping.
The unit operates at full speed for 5 seconds after the outdoor unit fan starts.
The outdoor unit fan stops during defrost operation.
The outdoor fan air flow rate is controlled by the inver ter by switching the heat exchanger capacity using the 4-
way valve (21S4a, 21S4b, 21S4c) or the 2-way valve (SV5b, SV5c) according to the required performance.
(
1) Use of only the left rear heat exchanger viewed from the front of the unit
(
2) Use of only the left heat exchanger viewed from the front of the unit
(
3) Use of only the left fan viewed from the front of the unit
(
4) The 2-way valve (SV5b, SV5c) is open while not being powered and closed while being powered.
7. Defrost operation control
(1) Starting the defrost operation
Defrost operation is performed only on the primar y unit when the secondar y unit is being stopped dur ing
heating operation, and is performed on both the primary and the secondary units at the same time when the primary and the secondar y units are operating during heating operation.
Defrost operation is started when one of the following conditions is met.
1 When the primar y compressor unit pipe temperature (TH5) of -8˚C has continuously been detected for 3
minutes after the integrated primary compressor operation time of 50 minutes have passed.(90 minutes later when the defrost prohibit timer is set to 90 minutes.)
2 When the secondary compressor unit pipe temperature (TH5) of -8˚C has continuously been detected for 3
minutes after the integrated secondary compressor operation time of 50 minutes have passed.(90 minutes later when the defrost prohibit timer is set to 90 minutes.)
(2) Defrost operation
Page 72
- 70 -
(3) Completion of defrost operation
Defrost operation stops when one of the following conditions is met. (When only the primary unit performs
defrost operation, apply the conditions only to the primary unit.)
1 When 12 minutes have passed since the beginning of defrost operation. 2 When the compressor unit pipe temperature of both the primary and the secondary units of 7˚C has been
continuously detected for 3 minutes.
Defrost operation will not stop its operation for 2 minutes once started unless the piping temperature
exceeds 25˚C within 2 minutes, in which case the operation will stop.
(4) Problems during defrost operation
If a problem is detected during defrost operation, the operation will be stopped, and the defrost prohibition
time based on the integrated compressor operation time will be set to 20 minutes.
(5) Change in the number of operating indoor units during defrost operation
Even when there is a change in the number of operating indoor units during defrost operation, the operation
will continue, and an adjustment will be made after the completion of the defrost operation.
Defrost operation will be continued, even if the indoor units stop or if thermo is turned off, until it has run its
course.
9. Subcool coil control (Linear expansion valve <LEV1>)
The amount of super heat is controlled and kept constant based on the bypass outlet temperature (TH8) of subcool coil every 30 seconds.
The degree of opening is controlled based on the subcool coil outlet/inlet temperature (TH5, TH7), high pres­sure (Pd), and discharge temperature. However, the LEV will be closed (0) during heating operation and when the compressor is stopped, and it will be open during cooling operation with thermo off.
It stays open at 480 during defrost operation.
8. Refrigerant recovery control
Recovery of refrigerant is performed during heating operation to prevent the refrigerant from accumulating inside the unit while it is stopped (unit in fan mode), or inside the indoor unit that is in cooling mode or in heat­ing mode with thermo off. It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor heat exchanger.
[During heating operation]
(1) Initiation of refrigerant recovery
Recovery of refrigerant dur ing heating operation begins when all of the following three conditions are met:
1 15 minutes have past since the completion of previous refrigerant recovery. 2 Td >115˚C 3 Frequencies below 50 Hz
(2) Refrigerant recovery
Refr igerant is recovered with the LEV on the
applicable indoor unit (unit under stopping mode, fan mode, cooling, heating with thermo off) being opened for 30 seconds.
Periodic capacity control of the outdoor units and
periodic LEV control of the indoor units will be suspended during refrigerant recovery operation; they will be performed after the recovery has been completed.
Defrost operation will be suspended until refrigerant recovery has been completed.
[During cooling operation]
(1) Initiation of refrigerant recovery
Recovery of refrigerant dur ing cooling operation begins when all of the following conditions are met:
1 30 minutes have past since the completion of previous refrigerant recovery. 2 When discharge temperature has remained above the limit continuously. 3 Td > 105˚C or [Pd > 3.43MPa (35kg/cm2G and SC0 >10deg)]
(2) Refrigerant recovery
Increase the opening of LEV1 (Periodic control begins when 30 seconds have elapsed).
Opening of LEV during refrigerant recovery (Opening of indoor unit LEV: 400 pulses)
Initial opening of LEV
30 seconds
Start Finish
Page 73
Flow chart of initial operation mode
Start of initial operation mode
F1 F2
Power supply frequency
50Hz 30Hz 60Hz
50Hz 60Hz20Hz
Primary unit STEP1
Operation of only the primary No.1 compressor
F1 60Hz
No
Yes
STEP1 The total indoor
operation capacity is P250 or more
(Qj 50) after
3 minutes.
Primary/secondary unit STEP1
Operation of only the primary or the secondary No.1 compressor
Less than 30 minutes for STEP1: F1 60Hz (both primary and secondary units) 30 minutes or more for STEP1: F1 85Hz (both primary and secondary units)
Completed in the STEP1 integrated operation time of 40 minutes (When discharge superheat of the compressor is high, the operation may be completed less than 40 minutes.)
Primary unit STEP1
Operation of only the primary No.1 compressor
Less than 30 minutes for STEP1: F1 60Hz
(primary unit)
30 minutes or more for STEP1: F1 85Hz (primary unit)
Completed in the STEP1 integrated operation time of 40 minutes (When discharge superheat of the compressor is high, the operation may be completed less than 40 minutes.)
1
Primary/secondary unit STEP3
Operation of the primary and the secondary No.1 and No.2 compressors
Completed in the STEP3 integrated operation time of 5 minutes
F1 F2
Power supply frequency
50Hz 30Hz 60Hz
50Hz 60Hz20Hz
Primary unit STEP3
Operation of the primary No.1 and No.2 compressors
Completed in the STEP3 integrated operation time of
5 minutes
Primary unit STEP1
Operation of only the primary No.1 compressor
Less than 30 minutes for STEP1: F1 60Hz
(primary unit)
30 minutes or more for STEP1: F1 85Hz (primary unit)
Completed in the STEP1 integrated operation time of 40 minutes (When discharge superheat of the compressor is high, the operation may be completed less than 40 minutes.)
F1 F2
Power supply frequency
50Hz 30Hz 60Hz
50Hz 60Hz20Hz
Primary unit STEP3
Operation of the primary No.1 and No.2 compressors
Completed in the STEP3 integrated operation time of
5 minutes
Completion of initial operation
1
When the air-conditioning load is low and the primary/ secondary units cannot be operated in conjunction.
Stop of the primary/secondary units
Perform rotation control on both the primary and the
secondary units. (Switching the relation between sub/main unit and primary/secondary unit. Refer to item 1.)
- 71 -
10. Control at initial startup
When the operation will be started in less than 12 hours after the power is turned on, the initial operation mode is started.
Page 74
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Step 1 Step 3
Step 1 Step 3Step 1 Step 3 Rotation
control
Main unit No.1 compressor ON/OFF
Sub unit No.1 compressor ON/OFF
Sub unit No.2 compressor ON/OFF
Main unit No.2 compressor ON/OFF
Main unit No.1 compressor ON/OFF
Sub unit No.1 compressor ON/OFF
Sub unit No.2 compressor ON/OFF
Main unit No.2 compressor ON/OFF
3 minutes
5 minutes40 minutes
Completion of initial start up operation
3 minutes
5 minutes40 minutes 5 minutes40 minutes
The main unit is the primary unit and the sub unit is the secondary unit.
The main unit is the secondary unit and the sub unit is the primary unit.
Completion of initial start up operation
< Initial start-up control:Time chart >
[Example 1] When the sub unit and the main unit operate in conjunction
[Example 2] When the sub unit and the main unit operate alternately
Page 75
<Codes of the errors that allow an emergency operation (Both for the primary unit and the secondary unit)>
<Pattern of emergency operation mode>
Codes of the errors that allow an emergency operation
Error code content
Compressor with problems
No.1 compressor
No.2 compressor
4220 4230 4240 4250 4260 5110 5301 4108
0403
Bus Voltage drop abnormality (S/W detect)
Serial transmission abnormality
Heat sink overheat protection Overload protection Over-current abnormality Cooling fan abnormality Heat sink thermal sensor abnormality (THHS) Current sensor/circuit abnormality Over-current protection (No.2 Comp)
Primary unit
Secondary unit
Allows or not
allows an
emergency operation
Indoor unit capacity that can be operated (Note1)
Compressor with problems No.1 compressor No.2 compressor No.1 compressor No.2 compressor
Cooling Heating
(Note1) When the indoor unit whose capacity is more than the capacity that can be operated
is operated, the unit will be in the same status as the thermo OFF.
Error
Normal Normal
Normal
60%
Error
Normal Normal
Error
Normal
Normal
Normal Normal
Error
Normal
Normal
Normal
- 73 -
11. Emergency operation mode
When problems occur with the compressor
Emergency operation mode is an operation that the unit runs on a first-aid basis when problems occur with the compressors (Primary unit No.1, No.2, Secondary unit No.1, No.2).
It can be star ted by performing an error reset on the remote controller.
Indoor unit capacity that can be operated is limited depending on the compressor with problems (refer to the
table below).
(1) Starting an emergency operation
1 Occurrence of error error source and error code displays on the remote controller 2 Error reset on the remote controller 3 If the remote controller displays the type of error that allows an emergency operation, (as in item 1 above)
(refer to the table below) the unit will begin “ retry ” operation.
4 When the same type of error is detected during the “ retry operation Item 3 above, perform another error
reset on the remote controller and run an emergency operation suitable for the type of the error.
(2) Finishing the emergency operation mode
[Finishing conditions] When one of the following conditions is met, emergency operation will end.
1 When an integrated operation time of compressor in cooling mode operation has reached 4 hours. 2 When an integrated operation time of compressor in heating mode operation has reached 2 hours. 3 When an error is detected that does not allow the unit to run an emergency operation.
[Control at the completion of and after an emergency operation]
To end the operation, stop the compressor and bring up the error code on the display on the remote controller.
If another error reset is performed upon finishing an emergency operation, the unit will run a retry operation again and will repeat the procedures
1 through 4 under section (1) above.
To finish an emergency operation and to run a current-carrying operation after correcting the error, perform a power reset.
Page 76
- 74 -
When problems occur with the pressure sensor and the thermistor
Emergency operation mode is an operation that the outdoor unit runs on a first-aid basis when problems occur with the pressure sensor and the thermistor. (possible during only cooling operation).
It can be star ted by performing an error reset on the remote controller.
Indoor unit capacity that can be operated is limited (refer to the table below).
(1) Starting an emergency operation
1 Occurrence of error error source and error code displays on the remote controller 2 Error reset on the remote controller 3 If the remote controller displays the type of error that allows an emergency operation, (as in item 1 above)
(refer to the table below) the unit will begin “ retry ” operation.
4 When the same type of error is detected during the “ retry operation Item 3 above, perform another error
reset on the remote controller and run an emergency operation suitable for the type of the error.
<Codes of the errors that allow an emergency operation (Both for the primary unit and the secondary unit)>
<Pattern of emergency operation mode>
Codes of the errors that allow an emergency operation
Error code content
Parts with problems
Thermistor
Pressure sensor
5101 5105
5106 5107 5108 5201
TH11 TH12
TH5 TH6 TH7 TH8
63HS
Liquid pipe thermal sensor abnormality
Discharge thermal sensor abnormality
Ambient temperature thermal sensor abnormality SC coil outlet thermal sensor abnormality SC coil bypass outlet thermal sensor abnormality High pressure abnormality
Primary unit
Secondary unit
Allows or not
allows an
emergency operation
Indoor unit capacity that can be operated (Note1)
Cooling Heating
Thermistor Pressure sensor
Primary unit with problem
(Note1) When the indoor unit whose capacity is more than the capacity that can be
operated is operated, the unit will be in the same status as the thermo OFF.
Error
40%
Normal
Normal Error
Thermistor Pressure sensor
Secondary unit with problem
(2) Finishing the emergency operation mode
[Finishing conditions] When one of the following conditions is met, emergency operation will end.
1 When an integrated operation time of compressor in cooling mode operation has reached 4 hours. 2 When an integrated operation time of compressor in heating mode operation has reached 2 hours. 3 When an error is detected that does not allow the unit to run an emergency operation.
[Control at the completion of and after an emergency operation]
To end the operation, stop the compressor and bring up the error code on the display on the remote controller.
If another error reset is performed upon finishing an emergency operation, the unit will run a retry operation again and will repeat the procedures
1 through 4 under section (1) above.
To finish an emergency operation and to run a current-carrying operation after correcting the error, perform a power reset.
Page 77
- 75 -
When having only the sub unit (OS) in operation in case of emergency
Emergency operation mode is an operation that only the sub unit (OS) runs a first-aid basis when prob lems occur with the circuit board on the main unit (OC) or when the compressor is replaced.
It operates with the lowest performance among the groups.
Follow the following procedures in case of an emergency operation.
Before the work, be sure to turn off the power.
1 Turn the dip switch (SW5-8) on the MAIN board
on OS side from ON to OFF.
2 Reconnect the transmission line of the
indoor/outdoor transmission terminal block (TB3) on OC side to the terminal block for centralized control (TB7).
3 Remove the CNS2 (centralized sub) connector
(blue, 3P) on the MAIN board on OC side.
4 Reconnect the transmission line between OC and
OS from TB7 to TB3.
5 Remove the model identification resistance
(TYPE1) connector (CNTYP1, red, 2P) on the MAIN board on OS side.
6 Turn the power on, and start operating.
1
Cooling mode
2
Heating mode
3
Dry mode
4
Fan mode
5
Stopping mode
1
Cooling mode
2
Heating mode
3
Stopping mode
Note : If the outdoor unit is already in the cooling mode, other indoor units (in stopping mode, fan mode, thermo OFF) will not run a heating operation when directed to do so, and
HEAT on the remote controller will blink. When the outdoor unit is already in the heating mode, the reverse will be true. (The first selection made on the remote controller has the priority.)
All indoor units in operation are in cooling mode. All indoor units in operation are in heating mode. All indoor units are in fan mode or stopping mode.
12. Operation mode
(1) Indoor unit operation modes
An operation mode can be selected from the following 5 modes on the remote controller.
13. Demand control
Cooling/heating operation can be prohibited (thermo OFF) by an external input to the outdoor units.
Note: When DIPSW4-7 are on, 4-STEP DEMAND CONTROL is possible using NIGHT MODE input and
DEMAND input. In case of 34~50HP, 8-step DEMAND CONTROL is possible. NIGHT MODE will become unavailable however. Refer to
-[3]-(4) for more detail.
(2) Outdoor unit operation mode
OC
MAIN board
CNS2
3
Remove
OS
MAIN board SW5-8
CNTYP1
TB3 TB7
2
TB3 TB7
4
Indoor unit Indoor unitIndoor unit
1
ON→OFF
5
Remove
Page 78
3-minute drain pump ON
Operation mode
Cooling mode
Cooling display
Prohibition
Cooling operation
Refer to 2-(1)
Heating mode
Heating display
Prohibition
Heating operation
Refer to 2-(2)
Dry mode
Dry display
Prohibition
Dry operation
Refer to 2-(3)
Fan mode
Fan display
Fan operations
Start
Breaker
turned on
Operation SW
turned on
1. Protection function self-holding cancelled.
2. Indoor unit LEV fully closed.
Remove controller
display extinguished
Auxiliary heater
ON
FAN stop
Drain pump
ON
1.Auxiliary heater OFF
2.Fan low speed for 1 minute
Prohibition Remote
controller blinking
Operation command to outdoor unit (to 2 )
Error mode
Error stop
Error display
Protection func­tion self-holding
Error command
to outdoor unit
Indoor unit LEV
fully closed
Normal operation Trouble observed Stop
YES
NO
NO
NO
YES
YES
NO
YES
NO
YES
YES
NO
Note:3
YES
NO
Note:3
YES
NO
Note:3
Note:2
Note:1
Notes :
1 Indoor unit LEV fully closed : Opening 41.2 The error mode includes that of indoor units and outdoor units. At indoor side error (excluding water leak), the indoor unit in
trouble only will be stopped in emergency, while at outdoor side error, all indoor units connected will be stopped.
3 Prohibition status is observed when the set cooling/heating mode is different from that of the outdoor unit.
1
From outdoor unit
- 76 -
[3] Operation Flow Chart
1. Flow to determine the mode
(1) Indoor unit (cooling, heating, dry, fan mode)
Page 79
YES
2
YES
YES
YES
NO
NO
NO
NO
Start
Breaker
turned on
Set indoor
address No. to remote
controller
Operation command
Operation
mode
Error mode
52C1 ON
Operation
mode
Error stop
Outdoor unit LED error display
Protection function self-holding
Error command to indoor unit
Note:1
Cooling-only, Heating-only, Cooling/heating mixed
From outdoor uni
t
Normal operation Trouble observed Stop
HO blinks on the remote controller
1. 52C1 OFF
2. Inverter output 0Hz
3. Outdoor fan Stop
4. All solenoid valve OFF
1. Protection function self­holding cancelled
2. LEV1 fully closed
Note:2
Note:3
Notes :
1 For about 3 minutes after turning on power source, address and group information of outdoor unit, indoor unit, and remote
controller are retrieved by remote controller, during which HO blinks on and off on remote controller. In case indoor unit is not grouped to remote controller, “HO” display on remote controller continues blinking even after 3 minutes after turning on power source.
2 Two trouble modes include indoor unit side trouble, and outdoor unit side trouble. In the case of indoor unit side trouble, error
stop is observed in outdoor unit only when all the indoor units are in trouble. However, if one or more indoor units are operating normally, outdoor unit shows only LED display without undergoing stop.
3 The operation mode conforms to mode command by indoor unit. However, when outdoor unit is under cooling operation, the
operation of indoor unit will be prohibited even by setting indoor units under operation, or indoor unit under stopping or fan mode to heating mode. Reversely when outdoor unit is being under heating operation, the same condition will be commenced.
Heating operation
Refer to 2-(2)
Cooling/dry operation
Refer to 2-(1), 2-(3)
Operation command to indoor unit To 1
- 77 -
(2) Outdoor unit (cooling, heating mode)
Page 80
YES
YES
NO
NO
NO
Cooling operation
4-way valve OFF
Indoor unit fan
operations
Test run start
Thermostat
ON
3-minute
restart preven-
tion
1. Inverter output 0Hz
2. Indoor LEV, LEV1 rated opening
3. All solenoid valves OFF
4. Outdoor unit fan stop
5. 52C1 OFF
1. Inverter frequency control
2. Indoor unit LEV, LEV1 control
3. Solenoid valve control
4. Outdoor unit fan control
5. 52C1 control
Normal operation Trouble observed Stop
Note:1
YES
Note :
1 The indoor fan operates at the set notch under cooling regardless of thermostat ON/OFF.
- 78 -
2. Operation under each mode
(1) Cooling operation
Page 81
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Heating operation
Defrost
operation
4-way valve OFF
Test run start
Thermostat
ON
3-minute
restart prevention
Normal operation Trouble observed Stop Test run
4-way valve OFF
Notes : 1 When outdoor unit starts defrosting, it transmits defrost operations command to indoor unit, and the indoor unit starts defrosting
operations.
Similarly when defrosting operation stops, indoor unit returns to heating operation after receiving defrost end command of
outdoor unit.
2 Defrost ending condition : Defrost operation for 10 minutes or more, or outdoor piping temperature : refer to “5. Defrost operation
control of [2] ControlIing the Outdoor Unit.
1. Indoor unit fan stop
2. Inverter defrost frequency control
3. Indoor unit LEV fully closed
4. Solenoid valve control
5. Outdoor unit fan stop
6. LEV1 control
7. 52C1 control
Defrost end
Defrost end
Return to
heating operation
Note:1, 2
Note:1, 2
1. Indoor unit fan very low speed operation
2. Inverter output 0Hz
3. Indoor unit LEV, LEV1 fully closed
4. Solenoid valve all OFF
5. Outdoor unit fan stop
6. 52C1 OFF
1. Indoor and outdoor unit fan control
2. Inverter frequency control
3. Indoor unit LEV, LEV1 control
4. Solenoid valve control
5. 52C1 control
- 79 -
(2) Heating operation
Page 82
YES
YES
NO
NO
Normal operation Trouble observed Stop
Dry operations
4-way valve OFF
Test run start
Inlet temp.
18°C
Notes :
1 When indoor unit inlet temperature exceeds 18°C, outdoor unit (compressor) and indoor unit fan start intermittent operations
synchronously. The fan always operates (at low spped) when it decreases below 18˚C. Operations of outdoor unit, indoor unit LEV and solenoid valve accompanying compressor ON are the same as those in cooling operations.
2 Thermostat is always kept on in test run, and indoor and outdoor unit intermittent operation (ON) time is a little longer than
normal operations.
1. Indoor unit fan stop
2. Inverter output 0Hz
3. Indoor unit LEV, LEV1 fully closed
4. Solenoid valve OFF
5. Outdoor unit fan stop
6. 52C1 OFF
1. Outdoor unit (Compressor) intermittent operations
2. Indoor unit fan intermittent operations (Synchronized with compressor : low speed, OFF operations)
Thermostat ON
Note:2
Note:1
1or2
- 80 -
(3) Dry operation
Page 83
- 81 -
1 Check refrigerant leak, loose power source or transmission line if found.
Measure resistance between the power source terminal block and ground with a 500V megger to confirm it is exceeding 1.0M. Notes: 1.
2.
3.
4.
5.
2
3
Confirm that the ball valves are fully opened at both gas and liquid sides.
[When connected to the transmission booster for transmission line] Before turning on the outdoor unit, turn on the transmission booster for transmission line.
Note: 1. Make sure to tighten the cap.
4
5
Check the phase order of the 3-phase power source and the voltage between each phase. Note: 1. Open phase or reverse phase causes the emergency stop of test run. (4103 error)
6
Turn the main power source on 12 hours at least before test run to power the crankcase heater. Note: 1. Shorter powering time may cause compressor trouble.
Do not operate the unit when the insulation resistance stays below 1.0M. Never apply a megger to the transmission line terminal block. Otherwise, the control board will be damaged. At immediately after installation or when the unit is left with the main power source turned off for a long time, the insulation resistance between the power source terminal block and ground may drop down to 1M approximately due to refrigerant accumulated inside the compressor. When the insulation resistance counts for more than 1M, power the crankcase heater for 12 hours or more by turning the main power source on. Doing this way evaporates refrigerant inside the compressor leading to increase the insulation resistance. Never measure the insulation resistance of the transmission terminal block for the MA remote controller.
Notes: 1.
2.
When the outdoor unit is turned on first, connection information of refrigerant system may not be confirmed normally. If the outdoor unit is turned on first, after turning on the transmission booster for transmission line, reset the power of the outdoor unit.
STAND BY DEFROST
ERROR CODE
D A I L Y
AUTO OFF
CENTRALLY CONTROLLED
CLOCK
REMAINDER
ON OFF
˚C
1Hr.
NOT AVAILABLE
˚C
CHECK MODE
FILTER
CHECK
TEST RUN
LIMIT TEMP.
ON/OFF
TEMP
FILTER
CHECK TEST
ON OFF
CLOCK
PAR-F27MEA
TIMER SET
Test run display ON/OFF lamp ON/OFF button
Vertical air direction button Test run button
Ventilation button
The illustration shows MA remote controller.
( )Powering display
Check code display
Test run remaining time display
Indoor unit liquid pipe temperature display
Set temperature button
Operation selector button
Louver button
Air speed button
Test Run
[1] Check Items before Test Run
[2] Test Run Method
Operation procedure
1
Turn on universal power supply at least 12 hours before getting started Displaying HO on display panel for about 5 minutes
2
Press
TEST
button twice Displaying TEST RUN’’ on display panel
3
Press
selection button Make sure that air is blowing out
4
Press
select button to change from cooling to heating operation, and vice versa Make sure that warm or cold
air is blowing out
5 Press
adjust button Make sure that air blow is changed
6 Press
or button to change wind Make sure that horizontal or downward blow is adjustable.
7
Make sure that indoor unit fans operate normally
8 Make sure that interlocking devices such as ventilator operate normally if any 9 Press
ON/OFF
button to cancel test run Stop operation
Note 1: If check code is displayed on remote controller or remote controller does not operate normally.
2: Test run automatically stops operating after two hours by activation of timer set to two hours. 3: During test run, test run remaining time is displayed on time display section. 4: During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temperature display section. 5: When pressing
adjust button, depending on the model, NOT AVAILABLE may be displayed on remote controller.
However, it is not a malfunction.
6: When pressing
or button, depending on the model, NOT AVAILABLE may be displayed on remote controller.
However, it is not a malfunction.
Page 84
- 82 -
Emergency stop at 1500 remote controller display (excessive refrigerant replenishment) Operating frequency does not fully increase, thus resulting in insufficient capacity Emergency stop at 1102 remote controller display (discharge temperature trouble)
Clarify relationship between the refrigerant amount and operating characteristics of CITY MULTI new refrigerant series, and perform service activities such as decision and adjustment of refrigerant amount on the market.
1. Operating characteristics and refrigerant amount
The followings are operating characteristics and refrigerant amount which draw special attention.
During heating operations, liquid level of accumulator is the highest when all the indoor units are operating.
1 2
3
4
Tendency of discharge temperature
1. Symptom
The symptoms shown in the table below are the signs of excess or lack of refrigerant amount. Be sure to adjust refrigerant amount in the refrigerant amount adjustment mode, by checking operation status, judging refrigerant amount and performing selfdiagnosis with LED, for overall judgment of excess or lack of refrigerant amount.
1 2 3
Excessive refrigerant replenishment
Insufficient refrigerant replenishment
2. Refrigerant volume
Checking the operating condition
Operate all the indoor units on cooling or on heating, checking the discharge temperature, sub-cooling, low pressure saturation temperature, inlet temperature, shell bottom temperature, liquid level, liquid step, etc. and rendering an overall judgment.l
Discharge temperature is high. (Normal temperature: 95˚C or below) 21Low pressure is extremely low. 3 Inlet superheating is high (if normal, SH = 20K or lower).
4
5
6 Inlet super heating is low (if normal, SH = 10K or higher).
Refrigerant volume tends toward insufficient.
Refrigerant volume tends toward overcharge.
Condition Judgment
1 Low pressure saturation temperature (Low pressure shell compressor)
During cooling operation, the amount of refrigerant in the accumulator is the smallest when all indoor units are in operation.
Discharge temperature is more likely to rise when there is a lack of refrigerant.
Discharge temperature is more likely to rise when high-pressure is high. Discharge temperature is more likely to rise when the low temperature is low.
Little change in discharge temperature is seen, even if the refrigerant is increased or decreased while there is refrigerant in the accumulator.
Compressor shell temperature is 10~60K higher than low pressure saturation temperature (Tc) when refrigerant amount is appropriate. Judged as over replenishment when temperature difference from low pressure saturation temperature (Te) is 5K or less.
Shell bottom temperature is high (the difference with the low pressure saturation
temperature
1 is 60K or greater)
Shell bottom temperature is low (the difference with the low pressure saturation
temperature
1 is 5K or higher.)
[3] Operating Characteristics and Refrigerant Amount
[4] Adjustment and Judgment of Refrigerant Amount
Page 85
- 83 -
Example
3. Amount of additional refrigerant to be charged
At the time of shipping from the factory, the outdoor unit is charged with the amount of refrigerant shown in the following table, but since no extension piping is included, please carry out additional charging on-site.
Calculation formula:
Calculate the additional refrigerant volume by calculating the size of the extension liquid piping and its length (unit : m)
Additional refrigerant volume (kg) = (0.29 x L
1) + (0.2 x L2) + (0.12 x L3) + (0.06 x L4) + (0.024 x L5) + α
L
2 : Length of
φ
15.88 liquid pipe (m)
L
1 : Length of
φ
19.05 liquid pipe (m)
L
3 : Length of
φ
12.7 liquid pipe (m)
L
4 : Length of
φ
9.52 liquid pipe (m)
L
5 : Length of
φ
6.35 liquid pipe (m)
α : Refer to the right table.
In the calculation results, round up fractions smaller than 0.01kg. (Example: 28.92kg
Refrigerant is charged to the compressor unit.
29.0kg)
Main unit P450
Amount of refrigerant to be charged 22.0kg
P500
22.0kg
P550
22.0kg
P600
22.0kg
P650
22.0kg
Sub unit P400
Amount of refrigerant to be charged 22.0kg
P650
22.0kg
Total capacity of connected indoor unit α
~80 81 ~ 160 1.5kg 161 ~ 330 2.0kg 331 ~ 480 2.5kg 481 ~ 630 3.0kg 631 ~ 710 4.0kg 711 ~ 890 5.0kg 891 ~ 1070 6.0kg
1071 ~ 1250 7.0kg 1251 ~ 9.0kg
1.0kg
Main unit
a
IndoorbIndoor
2
c
Indoor
3
d
Indoor
4
e
IndoorfIndoor
65
g
Indoor
7
i
Indoor
8
Liquid distributor Gas distributor
(Note1)
Sub unit
A
B
C D E F
G I J
K
(Note 1) As the gas distributor is
built in on the sub unit, B indicates only the liquid pipe.
Indoor
when
Therefore,
1. 250Type A :
ø15.88 3m a : ø9.52 15m
2. 200Type B :
ø15.88 1m b : ø9.52 15m
3. 80Type C :
ø19.05 40m c : ø9.52 5m
4. 71Type D :
ø15.88 10m d : ø9.52 5m
5. 140Type E :
ø12.7 5m e : ø9.52 5m
6. 125Type F :
ø9.52 5m f : ø9.52 5m
7. 63Type G :
ø12.7 30m g : ø9.52 5m
8. 25Type I :
ø9.52 5m i : ø6.35 5m
J:
ø9.52 5m
Additional charge volume = 40 x 0.29 + 14 x 0.20 + 35 x 0.12 + 70 x 0.06 + 5 x 0.024 + 6.0
= 29.0kg
Caution
Use liquid refrigerant to charge the system.
Use of gas refrigerant changes the composition of the
refrigerant in the cylinder, resulting in possible performance drop.
Total piping length of each liquid pipe is
ø15.88 : A + B + D = 14m
ø19.05 : C = 40m
ø12.7 : E + G = 35m ø9.52 : F + I + J + a + b + c + d + e + f + g = 70m ø6.35 : i = 5m
1
Page 86
1. Procedure
Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below.
(1) Switching the function select switch (SW2-4), located on the outdoor unit's (system unit, main unit) control
board, ON starts refrigerant volume adjustment mode operation and the following operation occurs.
Operation Operation The outdoor unit LEV opens less than usual during cooling operation,
so that the subcool can be easily got.
Notes:
Self-diagnosis switch for TH1
Self-diagnosis switch for TH7
Self-diagnosis switch for TH5
Self-diagnosis switch for Tc
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
Using these, judge TH1, Tc - TH5 and Tc - TH7.
1. Be sure to turn on SW2-4 on both the sub unit and the main unit.
2. Based on the following flowchart, use TH1, TH5, TH7 and Tc to adjust the refrigerant volume. Check the values of TH1, TH5, TH7, Tc of both the sub unit and the main unit following the flowchart. Use the self­diagnosis switch (SW1) on each main PCB of the outdoor unit, the system unit and the main unit to display TH1, TH5, TH7 and Tc.
3. Even if the refrigerant volume has reached a suitable level shortly after starting refrigerant volume adjustment mode, if left for a suf ficient length of time (once the refrigeration system has stabilized), there are times when this level may become unsuitable.
1) The refrigerant volume is suitable;
When the refrigerant volume for TH5 - TH7 is more than 5K at the outdoor unit, and 5 to 15K for SH at the indoor unit.
2) The current volume is suitable, however, may become unsuitable after a certain length of time; When the refrigerant volume for TH5 - TH7 is less than 5K at the outdoor unit, or less than 5K for SH at the indoor unit. In this case, wait until the refrigerant volume for TH5-TH7 becomes 5K or more, or 5 to 15K for SH at the
indoor unit, and judge the suitable refrigerant amount.
4. There are times when it becomes difficult to determine the volume when performing refrigerant adjustments if the high pressure exceeds 2.0MPa.
5. Refrigerant adjustment mode operation will automatically stop in 90 minutes. By turning off and on SW 2-4, the adjustment mode operation can be run again.
- 84 -
[5] Refrigerant Volume Adjustment Mode Operation
Page 87
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
If gas refrigerant is used to seal the system, the
composition of the refrigerant in the cylinder will change and performance may drop.
Start SW2-4 ON on both the system unit and the main unit
All indoor units are run in
test cooling mode
Minimum of
30 minutes continuous
operation
Has the compressor
operating frequency of both the system
unit and the main unit stabilised?
Refer to the previous page for Notes 1
through 5.
Note3
Note3
Note3
Add a small amount of refriger­ant at low pressure service port.
Remove a small amount of refrigerant at low pressure service port.
W
Wait 5minutes before making next judgment.
Add a small amount of refriger­ant at low pressure service port.
Add a small amount of refriger­ant at low pressure service port.
Add a small amount of refrigerant at low pressure service port.
Is Tc-TH5 < 8K ?
Caution
Ensure that no refrigerant is released into the atmosphere.
Caution
Use liquid refrigerant to fill the system.
Wait 5 minutes before making judgment on Tc-TH5.
System has the correct amount of refrigerant SW2-4 OFF on both the system unit and the main unit
Note5
Has the initial start-up
mode been completed?
Is TH11 100˚C on both the system unit and the main unit?
Is TH11 95˚C on both the system unit and the
main unit?
ait 5minutes before making next judgment.
Is 8 Tc-TH5 12K ? (Use the larger value of the values of the sub unit and the main unit for judgment.)
≤≤
Note2
Note2
Note4
Is Tc-TH7 20K ?
(Use the unit that was used for
Tc-TH5 judgment for judgment.)
Note2
- 85 -
[ Refrigerant Adjustment Method ]
Page 88
Unable to execute cooling (heating) operation while other indoor unit is under cooling (heating) operation.
Because of the control action of the auto-vane, hori­zontal blow may be commenced automatically one hour after using for down blow in cooling. Horizontal blow will also be commenced at defrosting under heat­ing, at the time of the hot adjust and the thermostat off.
Very low speed operation is commenced at thermo­stat OFF. At thermostat ON, the very low speed operation au­tomatically changes over to the set value by the tim e or piping temperature.
Fan stops under defrosting operation.
When the auxiliary heater is turned on, fan operates for one minute after stopping to remove residual heat.
Very low speed for 5 minutes after SW "ON" or until the piping temperature reaches 35˚C. Thereafter, the set value is commenced after low speed for 2 minutes. (Hot adjust control)
The system is under starting up. Operate the remote controller after the blinking of HO is disappeared.
At stopping of cooling operation, drain pump oper­ates for 3 minutes further.
Run drain pump if drain water is generated even un­der stopping.
Symptom Remote controller display Cause
Indoor unit does not run while oper­ating for cooling (heating).
Auto-vane runs freely.
Air speed setting switches over freely during heating operation.
Fan stops during heating operation.
Fan does not stop while stopping op­eration.
Air speed does not attain the set value even though turning operation switch to "ON."
The display shown right will appear on the indoor unit remote controller for about 5 minutes when the main power source is turned on.
Drain pump does not stop while the operation is stopped.
Drain pump runs even during unit stopping.
"COOL (HEAT)"
blinking display
Normal display
Normal display
Defrosting
Extinguished
Preparing heating
"HO" blinking display
Extinguished
- 86 -
[6] Symptoms that do not Signify Problems
Page 89
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (✻1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Suction (Compressor)
˚C
Shell bottom (Compressor) SCC outlet (TH7) Bypass outlet (TH8)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
Sectional temp.
388 324 324 325 261 261
387 222
250 200 125
71 71 20
10020250 200 125
100 50 32
12520250 200 200
100 32 32
125
25
PUHY-P900YSGM-A PUHY-P950YSGM-A
PUHY-P500YMM-A PUHY-P550YMM-A
PUHY-P400YSM-A PUHY-P400YSM-A
27.0/19.0
35.0/24.0
388 324 387 253 253 187
325 187
8 8
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
10
5
50 Hi
54 54
45.0/41.2 49.3/45.1 380/415 380/415
184 196
50/60 50/60
65/56 74/65
2.74/0.84 2.77/0.84
81/86 82/86
40 40 15 15
15 15 19/16 19/16 46/49 47/49
22 22
99 22 22 14 14
388 324 387 325 362 261
387 187
PUHY-P850YSGM-A
PUHY-P450YMM-A PUHY-P400YSM-A
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
53
42.6/39.0
380/415
175
50/60
59/48
2.71/0.85
80/86
39 15
15 19/16 45/19
21
9 21 14
- 87 -
[7] Standard Operation Data (Reference Data)
1. Cooling operation
Page 90
- 88 -
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (✻1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Suction (Compressor)
˚C
Shell bottom (Compressor) SCC outlet (TH7) Bypass outlet (TH8)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
Sectional temp.
388 388 324 325 362 261
324 222
250 250 200
63 63 32
12525250 250 200
100 71 32
12525250 250 200
100 50 32
200
25
PUHY-P1050YSGM-A PUHY-P1100YSGM-A
PUHY-P650YMM-A PUHY-P450YMM-A
PUHY-P400YSM-A PUHY-P650YSM-A
27.0/19.0
35.0/24.0
388 388 324 441 441 261
387 222
8 8
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
10
5
50 Hi
54 55
56.5/51.7 61.4/56.2 380/415 380/415
214 225
50/60 50/60
88/80 97/88
2.83/0.83 2.86/0.82
84/86 85/86
41 42 14 14
14 14 18/15 18/15 49/49 50/49
23 24
88 23 24 13 13
388 388 324 325 253 261
387 222
PUHY-P1000YSGM-A
PUHY-P600YMM-A PUHY-P400YSM-A
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
54
52.5/48.0
380/415
205
50/60
81/71
2.80/0.83
83/86
41 14
14 18/15 48/49
23
8 23 13
Page 91
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (✻1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Suction (Compressor)
˚C
Shell bottom (Compressor) SCC outlet (TH7) Bypass outlet (TH8)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
Sectional temp.
388 388 388 325 325 222
388 222
250 250 200 100 50 32
20025250 250 250
100 50 32
25032250 250 250
100 100 25
250
25
PUHY-P1200YSGM-A PUHY-P1250YSGM-A
PUHY-P550YMM-A PUHY-P600YMM-A
PUHY-P650YSM-A PUHY-P650YSM-A
27.0/19.0
35.0/24.0
388 388 324 325 362 261
324 222
8 8
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
10
5
50 Hi
55 55
74.9/68.6 80.2/73.5 380/415 380/415
246 254
50/60 50/60
116/112 120/120
2.94/0.81 2.98/0.81
87/86 88/86
43 43 13 13
13 13 17/14 17/14 52/49 53/49
25 25
77 25 25 12 12
388 388 388 325 362 261
388 261
PUHY-P1150YSGM-A
PUHY-P500YMM-A PUHY-P650YSM-A
27.0/19.0
35.0/24.0 8 8
10
5
50
Hi
55
67.4/61.7
380/415
236
50/60
106/99
2.89/0.82
86/86
42 13
13 17/14 51/49
24
7 24 12
- 89 -
Page 92
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (✻1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Sectional temp.
Suction (Compressor)
˚C
Shell bottom (Compressor)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
400 332 332 332 254 254
406 229
250 200 125
71 71 20
10020250 200 125
100 50 32
12520250 200 200
100 32 32
125
25
PUHY-P900YSGM-A PUHY-P950YSGM-A
PUHY-P500YMM-A PUHY-P550YMM-A
PUHY-P400YSM-A PUHY-P400YSM-A
20.0/-
7.0/6.0
400 332 406 259 259 194
332 194
8 8
20.0/-
7.0/6.0 8 8
10
5
50
Hi
10
5
50 Hi
54 54
49.1/44.9 51.3/47.0 380/415 380/415
00
50/60 50/60
72/63 79/69
2.82/0.66 2.82/0.66
78/83 79/83
00 11 11
0/0 0/0
28/31 29/31
36 36 75 75
400 332 406 332 373 254
406 194
PUHY-P850YSGM-A
PUHY-P450YMM-A PUHY-P400YSM-A
20.0/-
7.0/6.0 8 8
10
5
50
Hi
53
46.3/42.4 380/415
0
50/60
67/57
2.81/0.67
77/83
0 1 1
0/0
27/31
36 75
- 90 -
2. Heating operation
Page 93
400 400 332 332 373 254
332 229
250 250 200
63 63 32
12525250 250 200
100 71 32
12525250 250 200
100 50 32
200
25
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (
1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Sectional temp.
Suction (Compressor)
˚C
Shell bottom (Compressor)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
PUHY-P1050YSGM-A PUHY-P1100YSGM-A
PUHY-P650YMM-A PUHY-P450YMM-A
PUHY-P400YSM-A PUHY-P650YSM-A
B
20.0/-
7.0/6.0
400 400 332 455 455 254
406 229
8 8
20.0/-
7.0/6.0 8 8
10
5
50
Hi
10
5
50
Hi
54 55
57.8/52.9 62.3/57.0 380/415 380/415
00
50/60 50/60
92/84 101/93
2.83/0.65 2.84/0.64
81/83 82/83
00 00 00
-1/-1 -1/-1
31/31 32/31
37 37 76 76
400 400 332 332 259 254
406 229
PUHY-P1000YSGM-A
PUHY-P600YMM-A
PUHY-P400YSM-A
20.0/-
7.0/6.0 8 8
10
5
50
Hi
54
55.1/50.5 380/415
0
50/60
87/76
2.83/0.65
80/83
0 0 0
-1/-1
30/31
37 76
- 91 -
Page 94
Items
Outdoor unit
Ambient temp.
Indoor
DB/WB
Set type Main unit Sub unit
Outdoor Quantity Quantity in operation
Set
Indoor unit
Condition
Model
Main pipe
Piping
Branch pipe
m
Total piping length Indoor unit fan notch – Refrigerant volume kg
Outdoor unit
Total current A Vo Vlts
Indoor unit
Pulse
LEV opening
SC (LEV1) (
1)
Pressure
High pressure (after O/S) /Low pressure (before accumulator)(✻1)
MPa
Discharge (TH11/TH12) Heat exchanger outlet (TH5)
Accumulator
Inlet
Outdoor unit (
1)
Outlet
Sectional temp.
Suction (Compressor)
˚C
Shell bottom (Compressor)
Indoor
LEV inlet
unit
Heat exchanger outlet
No.2 compressor frequency (50/60Hz) Hz
No.1 compressor frequency (50/60Hz) Hz
(1) Both for sub unit and the main unit
400 400 400 332 332 229
400 229
250 250 200 100 50 32
20025250 250 250
100 50 32
25032250 250 250
100 100 25
250
25
PUHY-P1200YSGM-A PUHY-P1250YSGM-A
PUHY-P550YMM-A PUHY-P600YMM-A
PUHY-P650YSM-A PUHY-P650YSM-A
20.0/-
7.0/6.0
400 400 332 332 373 254
332 229
8 8
20.0/-
7.0/6.0 8 8
10
5
50
Hi
10
5
50
Hi
55 55
67.0/61.4 71.9/65.8 380/415 380/415
00
50/60 50/60
113/105 120/115
2.85/0.63 2.85/0.63
84/83 85/83
00
-1 -1
-1 -1
-2/-2 -2/-2
34/31 35/31
38 38 77 77
400 400 400 332 373 254
400 254
PUHY-P1150YSGM-A
PUHY-P500YMM-A
PUHY-P650YSM-A
20.0/-
7.0/6.0 8 8
10
5
50
Hi
55
64.9/59.4 380/415
0
50/60
107/99
2.84/0.64
83/83
0
-1
-1
-2/-2
33/31
38 77
- 92 -
Page 95
- 93 -
0403
(Note1)
Serial transmission abnormality
0900 Test run (LC) 1102 Discharge temperature abnormality 1301 Low pressure abnormality (OC) 1302 High pressure abnormality (OC) 1500 Overcharged refrigerant abnormality 2500 Leakage (water) abnormality 2502 Drain pump abnormality 2503 2600 2601
Drain sensor abnormality Water leakage (LC)
Water-supply cut (LC) 4103 4108
Reverse phase abnormality
Over-current protection (No.2 Comp) 4115 Power supply sync signal abnormality 4116 Fan speed abnormality (motor abnormality) (IC, LC)
4220 4225
(Note1)
[108] Bus Voltage drop abnormality (S/W detect) [109]
[01] [05]
Bus Voltage rise abnormality (S/W detect)
[110] Bus Voltage abnormality (H/W detect) [111] Logic error
4230 4235
(Note1)
Heat sink overheat protection 4240
4245
(Note1)
Overload protection
4250 4255
[101] IPM abnormality [102] ACCT over-current abnormality (H/W peak detect) [103](Note1) DCCT over-current abnormality (H/W peak detect) [104] IPM short/grounding abnormality [105] Load short abnormality [106] ACCT over-current abnormality (S/W detect peak current) [107] ACCT over-current abnormality (S/W detect effective current)
4260 4265
(Note1)
Cooling fan abnormality
[05]
[01]
5101
Air inlet (TH21:IC) Open-air treatment inlet (TH4:LC)
Open-air treatment pipe (TH2:LC)
Open-air treatment gas pipe (TH3:LC)
Discharge (TH11, TH12:OC)
5102 Liquid pipe (TH22:IC)
5103 Gas pipe (TH23:IC)
Open-air temperature (TH24)
Open-air treatment open air (TH11)
5105
5104
Liquid pipe (TH5) 5106 Ambient temperature (TH6) 5107 SC coil outlet (TH7) 5108 SC coil bypass outlet (TH8)
5110
(Note1)
Heat sink (THHS)
5201 High pressure sensor abnormality (OC)
Check code Check content
Thermal sensor abnormality
[ ] : Error detail No.
Remarks
ªª
Troubleshooting
[1] Check Code List
1. Check Code List
Page 96
- 94 -
5301 5305
[115] ACCT sensor abnormality [116] DCCT sensor abnormality [117](Note1) ACCT sensor/circuit abnormality [118] DCCT sensor/circuit abnormality [119] IPM-open/ACCT connection abnormality [120] ACCT miss-wiring abnormality
6600 Multiple address abnormality
Unset polarity
6602
6601
Transmission processor hardware abnormality
6603 Transmission circuit bus-busy abnormality
Check code Check content
6606 Communications with transmission processor abnormality 6607 No ACK abnormalit
Maintenance operation is possible. Maintenance operation is possible.
y 6608 No response abnormality 6831 MA Communication no reception error 6832 MA Communication synchronization recovery error 6833 MA Communication transmission/reception hardware error 6834 MA Communication start bit error 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Error in the number of connected units 7105 Address setting abnormality 7106 Characteristics setting abnormality (LC) 7110 Connection number setting abnormality 7111 Remote control sensor abnormality 7113 Functional restriction error
7130 Di
7117 Unset model error
7116 System error before flashing operation
Maintenance operation is possible. Maintenance operation is possible.
ff
(Note1) Compressor inverter and fan inverter are installed in these R410A series. When checking the check code or the 2-digit detail
code, refer to the last digit to confirm whether the error code is for the compressor or for the fan.
Example) Code 4225 → Bus voltage drop Error for fan inverter system Code 4250 IPM / bus voltage fault Error for compressor inverter system
erent unit model error
The last digit Inverter address (system) Potential model
0 or 1 1 Compressor inverter system
5 5 Fan inverter system
Remarks
Page 97
- 95 -
Over-current protection ( [ P450-P650 model ] No.2 Comp)
1202 (1102) Preliminary discharge temperature abnormality or preliminary discharge thermal sensor abnormality (TH11)
1205 (5105) Preliminary liquid pipe temperature sensor abnormality (TH5)
Preliminary THHS sensor/circuit abnormality
1216 (5107) Preliminary sub-cool coil outlet thermal sensor abnormality (TH7) 1217 (5108) Preliminary sub-cool coil bypass outlet thermal sensor abnormality (TH8) 1221 (5106) Preliminary ambient temperature thermal sensor abnormality (TH6) 1402 (1302) Preliminary high pressure abnormality or preliminary pressure sensor abnormality 1600 (1500) Preliminary overcharged refrigerant abnormality
1605
4158 (4108)
Preliminary suction pressure abnormalit
Preliminary serial transmission abnormality
4300 (5301) 4305 (5305)
[115] Preliminary ACCT sensor abnormality [116] Preliminary DCCT sensor abnormality [117](Note1)
(Note1)
Preliminary ACCT sensor/circuit abnormality [118] Preliminary DCCT sensor/circuit abnormality [119] Preliminary IPM-open/ACCT connection abnormality [120]
[05]
[00]
(Note1)
1214 (5110)
[05]
[01]
(Note1)
4300 (0403)
Preliminary ACCT miss-wiring abnormality
4320 (4220) 4325 (4225)
[108] Preliminary bus voltage drop abnormality (S/W detect) [109] Preliminary bus voltage rise abnormality (S/W detect) [110] Preliminary bus voltage abnormality (H/W detect) [111] Preliminary logic circuit for H/W error detect abnormality
4330 (4230) 4335 (4235)
(Note1)
Preliminary heat sink overheating abnormality
4340 (4240) 4345 (4245)
(Note1)
Preliminary overload abnormality
4350 (4250) 4355 (4255)
[101] Preliminary IPM abnormality [102] Preliminary ACCT over-current abnormality (H/W peak detect) [103] Preliminary DCCT over-current abnormality (H/W peak detect) [104] Preliminary IPM short/grounding abnormality [105] Preliminary load short abnormality [106] Preliminary ACCT over-current abnormality (S/W detect peak current) [107] Preliminary ACCT over-current abnormality (S/W detect effective current)
Preliminary error code Preliminary error content
Please refer to ( ) check code. [ ] : Error code No.
(Note1) Compressor inverter and fan inverter are installed in these R410A series. When checking the check code or the 2-digit detail
code, refer to the last digit to confirm whether the error code is for the compressor or for the fan.
Example) Code 4225 → Bus voltage drop Error for fan inverter system Code 4250 IPM / bus voltage fault Error for compressor inverter system
The last digit Inverter address (system) Potential model
0 or 1 1 Compressor inverter system
5 5 Fan inverter system
2. Intermittent fault check code (only for outdoor unit)
Page 98
The following operation is performed on the outdoor unit depending on the error type.
(✻1)
For more detail information on an emergency operation mode, refer to “ Control [2] Controlling the Outdoor Unit 11. Emergency operation mode”.
(✻2)
For the error that can be recovered by a maintenance operation, refer to the remarks column on “[1] Check Code List”.
When an emergency operation is valid (SW4-4: OFF)
and
an error occurs that can be recovered by an emergency operation
Reset the power source
Operation pattern
Operation pattern
(mode)
Operation pattern
(mode)
Error stop Retry operation / Error stop Emergency operation / Error stop
Reset method
(after correcting
the error)
Emergency operation mode
(✻1)
Unit operation
Local remote
controller display
(air conditioner
in operation)
Switcah setting
and condition
Reset method
(after correcting
the error)
Unit operation
Local remote
controller display
(air conditioner
in operation)
Switcah setting
and condition
A retry operation is performed by resetting the local remote controller. The operation is limited by separating the error sources, and will be continued.
After a certain length of time, a normal
mode (error stop) will be performed.
“Error code” blinks during an emergency operation. (see figure2)
A retry operation is performed by resetting the local remote controller. (Check one more time whether the operation is possible.)
After a certain length of time, a normal
mode will be performed.
When the air conditioner makes an error stop during a retry operation, the operation lamp blinks, and “error code” and “unit number” blink. (see figure1)
An error occurs in an air conditioner, and the operation cannot be continued.
The operation lamp blinks, and “error code” and “unit number” blink. (see figure1)
An error occurs that can be recovered
by a maintenance operation
(✻2)
Maintenance operation
Maintenance operation mode
An error occurs in an air conditioner, the operation is limited, and will be continued.
“Error code” blinks. (see figure2)
It recovers from the error automatically or reset the local remote controller or the power source.
When an emergency operation is valid
(SW4-4: OFF)
and
an error occurs that can be recovered
by an emergency operation
Error stop mode
An error occurs in an air conditioner, and the operation cannot be continued.
The operation lamp blinks, and “error code” and “unit number” blink. (see figure1)
Reset the local remote controller or the power source.
Figure1 Figure2
Unit number
Error code
Operation lamp (blinks)
Error code
ERROR CORD
CHECK
ON/OFF
˚C
˚C
ERROR CORD
ON/OFF
- 96 -
Page 99
- 97 -
[2] Responding to Error Display on the Remote Controller
1. Mechanical problems
Checking code
0403
Meaning, detecting method Cause
Checking method & Countermeasure
Serial transmission abnormality
Serial transmission failure between the MAIN board and the INV board, and between the MAIN board and the FAN board.
Detail code 01:
Between the MAIN board and the INV board
Detail code 05:
Between the MAIN board and the FAN board
(1) Defective wiring. Check for wiring between the
MAIN board connector CNRS3B and the INV board connector CNRS1 or between the MAIN board connector CNRS3A and the FAN board connector CNRS2 or check for contact the connector. Check for contact of the connector CNAC3 on the MAIN board or of the connector CNTR on the FAN board.
1102 Discharge
temperature abnormality (Outdoor unit)
1. When 120˚C or more discharge temperature is detected during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts.
2. When 120 °C or higher discharge is detected again (the second time) within 30 minutes after the first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts.
3. When 120˚C or more discharge is detected, again (the third time) within 30 minutes after previous stop of outdoor unit, emergency stop is observed with code No.1102 displayed.
4. When 120˚C or more discharge is detected 30 or more minutes after previous stop of outdoor unit, the stop is regarded as the first time and the process shown in 1. is observed.
5. 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed.
(1) Gas leak, gas shortage. (2) Overload operations.
(3) Poor operations of indoor
LEV.
(4) Poor operations of OC
controller LEV1.
(5) Poor operations of ball valve.
(6) Outdoor unit fan block, motor
trouble, poor operations of fan controller Heating (Heating-only, Heating-main).
(3) ~ (6) : Rise in discharge temp. by low pressure drawing.
(7) Gas leak between low and
high pressures.
4-way valve trouble, compressor trouble, solenoid valve SV1 trouble.
(8) Thermistor trouble
(TH11, TH12).
(9) Thermistor input circuit
trouble on control circuit board.
See Refrigerant amount check. Check operating conditions and
operation status of indoor/outdoor units.
Check operation status by actually performing cooling or heating operations.
Cooling : Indoor LEV (Cooling-only) LEV1
Heating : Indoor LEV (Heating-only)
See Trouble check of LEV and
solenoid valve.
Confirm that ball valve is fully opened.
Check outdoor fan. See Trouble check of outdoor
fan.
Check operation status of cooling-only or heating-only.
Check resistance of thermistor.
Check inlet temperature of sensor with LED monitor.
(2) Inverter address switches
are set wrong.
Check the address of SW2-1 on the INV board. Check SW2-1 on the FAN board whether it is ON.
(4) Defective INV board.
Defective FAN board.
Replace the INV board or the FAN board when the power turns on automatically, even if the power is reset.
(3) Transformer failure. Measure voltages between pins
1 and 3 of the FAN board connector CNTR.
For the check code on the inverter, refer to 6. Inverter and compressor in the section [4] Troubleshooting of principal parts
Page 100
- 98 -
Checking code
1301
Meaning, detecting method Cause
Checking method & Countermeasure
Low pressure abnoramlity
When starting the compressor from Stop Mode for the first time (include the time when starting the compressor for the next time, when starting bound power, ending bound power or when the thermo turns off just after the remote controller is turned on), check the low-pressure sensor beforehand. If the sensor is 0.098MPa, stop the operation immediately after starting.
(1) Internal pressure is dropping
due to a gas leak.
(2) The low pressure pressure
sensor is defective. (3) Insulation is torn. (4) A pin is missing in the
connector, or there is faulty
contact. (5) A wire is disconnected. (6) The control board’s low
pressure pressure sensor
input circuit is defective.
Refer to the item on judging low pressure pressure sensor failure.
1302 High pressure
abnoramlity 1 (Outdoor unit)
1. When pressure sensor detects 3.87MPa or more during operations (the first time), outdoor unit stops once, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts.
2. When a pressure of 3.87MPa or more is detected again (the second time) within 30 minutes after first stop of outdoor unit, mode is changed to restart mode after 3 minutes, then the outdoor unit restarts.
3. When 3.87MPa or more pressure is detected again (the third time) within 30 minutes after stop of outdoor unit, error stop is observed with code No. 1302 displayed.
4. When 3.87MPa or more pressure is detected 30 or more minutes after stop of outdoor unit, the detection is regarded as the first time and the process shown in 1. is observed.
5. 30 minutes after stop of outdoor unit is intermittent fault check period with LED displayed.
6. Error stop is observed immediately when pressure switch (4.15 MPa) operates in addition to pressure sensor.
(1) Poor operations of indoor
LEV → Heating
(2) Poor operations of ball valve.
(3) Short cycle of indoor unit. (4) Clogging of indoor unit filter. (5) Fall in air volume caused by
dust on indoor unit fan.
(6) Dust on indoor unit heat
exchanger.
(7) Indoor unit fan block, motor
trouble.
(2)~(7) : Rise in high pressure caused by lowered condensing capacity in heating-only and heating-main operation.
(8) Short cycle of outdoor unit. (9) Dust on outdoor unit heat
exchanger.
(10) Outdoor unit fan block,
motor trouble, poor
operations of fan controller. (8)~(10) : Rise in high pressure caused by lowered condensing capacity in cooling-only and cooling-main operation.
(11) Poor operations of solenoid
valves SV1 (Bypass valves
(SV1) can not control rise
in high pressure).
(12) Thermistor trouble
(TH5, TH6).
(13) Pressure sensor trouble.
(14) Control circuit board
thermistor trouble, pressure
sensor input circuit trouble.
(15) Thermistor mounting failure
(TH5, TH6)
(16) No connector for pressure
switch (63H), disconnected
wire.
(17) Fuse melting on the control
board (F01 or F02).
Check operations status by actually performing cooling or heating operations.
Heating : Indoor LEV
See Trouble check of LEV and
solenoid valve.
Confirm that ball valve is fully opened.
Check indoor unit and take measures to trouble.
Check outdoor unit and take measures to trouble.
Check outdoor unit fan See Trouble check of outdoor
unit fan.
See Trouble check of solenoid valve.
Check resistance of thermistor.
Check Trouble check of
pressure sensor.
Check inlet temperature and pressure of sensor with LED monitor.
Check inlet temperature and pressure of sensor with LED monitor.
Check whether the fuse melts. Check whether the actuator for the cooling FAN (MF), the 4-way valve or the solenoid valve is not short-circuited and broken.
+0
-1.5
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