Mitsubishi Electric MXZ-8A140VA, MXZ-8A140VA3, PAC-AK50BC, PAC-AK30BC, MXZ-8A140VA1 Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

R410A

TECHNICAL & SERVICE MANUAL

August 2007

No. OC316

REVISED EDITION-D

[Model name] [Service Ref.] <Outdoor unit>

MXZ-8A140VA MXZ-8A140VA

MXZ-8A140VA MXZ-8A140VA2 MXZ-8A140VA3

PAC-AK50BC PAC-AK50BC PAC-AK30BC PAC-AK30BC

(Indispensable optional parts

for MXZ-8A140VA)

CONTENTS

1. TECHNICAL CHANGES···································2

2. SAFETY PRECAUTION ····································3

3. OVERVIEW OF UNITS······································6

4. SPECIFICATIONS···········································14

5. DATA ·······························································16

6. OUTLINES AND DIMENSIONS······················31

7. WIRING DIAGRAM·········································34

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

9. TROUBLESHOOTING ····································40

10. ELECTRICAL WIRING ····································88

11. WIRING SPECIFICATIONS·····························89

12. SYSTEM CONTROL ·······································90

13. REFRIGERANT PIPING TASK·······················92

14. DISASSEMBLY PROCEDURE ·······················95

15. PARTS LIST ··················································102

16. RoHS PARTS LIST ·······································109

17. OPTIONAL PARTS··························Back cover

OUTDOOR UNIT

Model name indication

Revision:

· MXZ-8A140VA REVISED EDITION-D.

· Some descriptions have been modified.

· Please void OC316 REVISED EDITION-C.

NOTE:

·This service manual

describes technical data of outdoor unit and branch box. As for indoor units, refer to its service manual.

• RoHS compliant products have <G> mark on the spec name plate.

• For servicing RoHS compliant products, refer to the RoHS PARTS LIST.

3 is added in

···38

BRANCH BOX

1 TECHNICAL CHANGES

MXZ-8A140VA2 ➔ MXZ-8A140VA3

The parts below have been changed.

• THERMISTOR (DISCHARGE/TH4) (Connector change)

• CONTROLLER CIRCUIT BOARD(C.B)

• NOISE FILTER CIRCUIT BOARD(N.F.)

• ACTIVE FILTER MODULE(ACTM)

• RELAY(52C), RESITOR(RS)(including N.F.)

MXZ-8A140VA1 ➔ MXZ-8A140VA2

The parts below have been changed.

• FOUR-WAY VALVE AND COIL(21S4)

• CONTROLLER CIRCUIT BOARD(C.B.)

• FAN MOTOR(MF1, MF2)

• SOLENOID VALVE AND COIL(SV2)

MXZ-8A140VA ➔ MXZ-8A140VA1

The parts below have been changed.

• POWER CIRCUIT BOARD(P.B.)

• NOISE FILTER CIRCUIT BOARD(N.F.)

• THERMISTOR (OUTDOOR / TH7) (Length change)

2 SAFETY PRECAUTION

Use new refrigerant pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.

Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

2-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuit must be disconnected.

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Unit

Gravimeter

[3] Service tools

(1) Use the below service tools as exclusive tools for R410A refrigerant.

No. Tool name Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting

·Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale 4 Gas leak detector ·Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check ·Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder ·Only for R410A ·Top of cylinder (Pink)

·Cylinder with syphon

8 Refrigerant recovery equipment

specifications

. (UNF1/2)

(2) Cautions for refrigerant piping work

1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

0.8

1.0

—

0.8

1.0

Nominal

dimensions(inch)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22 1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

9.1

13.2

16.6

19.7

—

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions(inch)

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

(mm)

R410A R22 1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0

—

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions(inch)

Flare nut dimensions

Outside

diameter

Dimension B

(mm)

R410A R22

Gauge manifold Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve Vacuum pump

Flare tool

Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermistor vacuum gauge and vacuum valve Charging cylinder

Air purge, refrigerant charge and operation check Gas leak check Refrigerant recovery Refrigerant charge Apply to flared section

Prevent compressor malfunction when charging refrigerant by

spraying liquid refrigerant Prevent gas from blowing out

when detaching charge hose Vacuum drying and air purge

Flaring work of piping

Bend the pipes Cut the pipes Weld the pipes Refrigerant charge Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Refrigerant charge

Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A Ester oil and alkylbenzene oil (minimum amount) Tool exclusive for R410A

Tool exclusive for R410A Tools for other refrigerants can

be used if equipped with adopter for reverse flow check Tools for other refrigerants can be used by adjusting flaring dimension Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adopter for rever se flow)

(Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adopter for rever se flow)

(Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410Ais same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7mm or below.)

2Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes.

Use torque wrench corresponding to each dimension.

Dimension A

3Tools for R410A (The following table shows whether conventional tools can be used or not.)

Dimension B

3 OVERVIEW OF UNITS

5HP

Rated capacity (kW)

(Cooling/Heating)

14.0/16.0

MXZ-8A140VA/ MXZ-8A140VA1/ MXZ-8A140VA2/ MXZ-8A140VA3

R410A

Indoor unit that can be connected

Branch box that can be connected

Capacity

Number of units Total system wide capacity

Type 22 ~ Type 80

2 ~ 8 units

1 ~ 2 units

31 ~ 132 % of outdoor unit capacity (4.4 kW ~ 18.5 kW)

Number of units

Outdoor unit

Ceiling concealed

4-way ceiling cassette

Wall mounted

Model type

Model name

deluxe standard Low static pressure

Low static pressure High static pressure High static pressure High static pressure 2 by 2 type standard

MSZ-FA25/35, FD25/35 MSZ-GA22/25/35/50/60/71/80, GB50, GC22/25/35 MSXZ-DB25/35 SEZ-KC25, KA35/50/60/71, KD25/35/50/60/71 MEXZ-GA25/35/50/60 PEAD-RP50/60/71EA.UK PEAD-RP60/71GA.UK PEA-RP71EA SLZ-KA25/35/50 PLA-RP35/50/60/71BA(.UK) MFZ-KA25/35/50

Floor standing

Capacity class

2.2kW 2.5kW 3.5kW 5.0kW 6.0kW 7.1kW 8.0kW

Connectable indoor unit lineup (Heat pump inverter type)

<NOTE> The lineup of a connectable indoor unit depends on a district/areas/country.

Branch box PAC-AK50BC

5 branches

(MAX. 5 units)

PAC-AK30BC

3 branches

(MAX. 3 units)

Number of branches Indoor unit that can be connected

( )

w Max. 2 branch boxes can be connected to 1 outdoor unit.

w According to the connection method, you can choose the favorite one.

2- branch pipe (joint) : Optional parts In case of using 1- branch box

In case of using 2- branch boxes

No need

Model name Connection method

flare

brazing

MSDD-50AR-E MSDD-50BR-E

Option

Optional accessories of indoor units and outdoor units are available.

CAUTION : The indoor unit which rated capability exceeds

8.0kW (80 type) can NOT be connected.

3-1. CONSTRUCTION OF SYSTEM

3-2. SYSTEM OUTLINE

MX Z - 8 A 140 V A

Model type

Power supply V: Single phase 220/230/240V 50Hz

220V 60Hz

Multi type heat pump inverter outdoor unit

Indicates equivalent to rated cooling capacity. (O0.1kW)

Number of connectable indoor units (MAX.)

Control and refrigerant A : New A control and R410A

PAC - A K 50 BC

(Indispensable) Optional parts

Symbol of factory

Branch box (Controller) Number of branches

50 : 5 branches 30 : 3 branches

Applicable refrigerant A : R410A

The additional connection of the Branch Box together with employment of the compact trunk-looking outdoor unit can successfully realizes a long distance piping for big houses. Equipped with a microcomputer, the Branch Box can translate the transmission signal of indoor units to achieve the optimum control.

3-2-1. System example

Indoor unit (Ceiling concealed type)

Indoor unit (Wall mounted type)

Outdoor unit

3-2-2. Method for identifying

■ Outdoor unit

■ Branch box

Branch Box

3-3. TYPICAL COMBINATION EXAMPLE

Branch box (5 branch type)

Outdoor unit

SEZ-60 MSZ-35 MSZ-35 MSZ-25 MSZ-25

Living

Dining Bedroom (1) Bedroom (2)

Master bedroom

Total rated capacity

18.0 18.5kW

MSZ-25

=2.5

SEZ-60 = 6.0 MSZ-35 = 3.5 MSZ-35 = 3.5 MSZ-25 = 2.5

Branch box is located INSIDE of condominium

Branch box

(Inside)

■ System example of 5 indoor units

Installing branch box indoors

Only 1 piping is required between the outdoor and indoor offering a fine external view.

■ Verification

The rated capacity should be determined by observing the table below. The unit’s quantities are limited in 2 to 8 units. For the next step, make sure that the selected total rated capacity is in a range of 4.4 ~ 18.5kW. The total indoor unit capacity should be within the outdoor units. (=14.0kW is preferred). Combination of excessive indoor units and an outdoor unit may reduce the capacity of each indoor unit. The rated indoor capacity is as the table below.

Example:

Indoor unit type (capacity class) Rated capacity (cooling) (kW)

2.2

2.5

3.5

5.0

6.0

7.1

8.0

3-4. INSTALLATION

3-4-1. Outdoor unit installation location

For best performance, select proper position.

● Avoid places where combustible gas may be generated or leak.

● Avoid direct sunlight or other sources of heat.

● Install sunshade to protect the outdoor unit if direct sunlight hits the unit.

● Install the outdoor unit with enough distance between neighbours as operation noise may disturb the neighbours.

● Avoid the position that the unit is covered by snow or snow blows directly against the air outlet. The snow block or blow

will reduce the airflow of the outdoor unit. In the areas of heavy snow, special countermeasures must be taken at installation to protect the outdoor unit from malfunction caused by snow.

● Select a location permitting easy wiring and pipe access to the power source and indoor unit.

● Drain water must be drained freely during operation. Check for draining.

3-4-2. Ventilation and service space

(1)Windy location installation

When installing the outdoor unit on a rooftop or other location unprotected from the wind, situate the air outlet of the unit so that it is not directly exposed to strong winds. Strong wind entering the air outlet may impede the normal airflow and a malfunction may result. The following shows 3 examples of precautions against strong winds.

● Face the air outlet towards the nearest available wall about 50 cm away from the wall. (Fig. 2-1)

● Install an optional air guide if the unit is installed in a location where strong winds from a typhoon, etc. may directly enter

the air outlet. (Fig. 2-2) AAir guide

● Position the unit so that the air outlet blows perpendicularly to the seasonal wind direction, if possible. (Fig. 2-3) BWind direction

Fig.2-1

Fig.2-2 Fig.2-3

(2) When installing a single outdoor unit

150

300

1000

Max. 500

150

1000

250

1500

500

Max. 500

1000

200

300

200

Minimum dimensions are as follows, except for Max., meaning Maximum dimensions, indicated. Refer to the figures for each case.

● Obstacles at rear only (Fig. 2-4)

● Obstacles at rear and above only (Fig. 2-5)

· Do not install the optional air outlet guides for upward airflow.

● Obstacles at rear and sides only (Fig. 2-6)

● Obstacles at front only (Fig. 2-7)

w When using an optional air outlet guide, the clearance is 500 mm or more.

● Obstacles at front and rear only (Fig. 2-8)

w When using an optional air outlet guide, the clearance is 500 mm or more.

● Obstacles at rear, sides, and above only (Fig. 2-9)

· Do not install the optional air outlet guides for upward airflow.

unit : mm

Fig.2-4

Fig.2-5 Fig.2-6

Fig.2-8Fig.2-7

Fig.2-9

(3) When installing multiple outdoor units

300

1500

500

1500

ax. 300

1000

600

2000

150

1500

500

1500

800

150

1500

600

3000

500

Leave 10 mm space or more between the units.

● Obstacles at rear only (Fig. 2-10)

● Obstacles at rear and above only (Fig. 2-11)

• No more than 3 units must be installed side by side. In addition, leave space as shown.

• Do not install the optional air outlet guides for upward airflow.

● Obstacles at front only (Fig. 2-12) w When using an optional air outlet guide, the clearance is 1000 mm or more.

● Obstacles at front and rear only (Fig. 2-13) w When using an optional air outlet guide, the clearance is 500 mm or more.

● Single parallel unit arrangement (Fig. 2-14) w When using an optional air outlet guide installed for upward airflow, the clearance is 1000 mm or more.

● Multiple parallel unit arrangement (Fig. 2-15) w When using an optional air outlet guide installed for upward airflow, the clearance is 1500 mm or more.

● Stacked unit arrangement (Fig. 2-16)

• The units can be stacked up to 2 units high.

• No more than 2 stacked units must be installed side by side. In addition, leave space as shown.

unit : mm

Fig.2-12Fig.2-11Fig.2-10

Fig.2-14Fig.2-13

Fig.2-15

Fig.2-16

3-4-3. Space required for Installation and servicing for Branch box.

450

Min. 250

Min.

(1)

(3)

Min. 250

450

280

Min. 250

w 1 Min. 250

198 Min. 30

180-200

(2)

(1) Front View (Fig. 3-1)

A Branch box B On the side of piping

(2)Side View (Fig. 3-2, Fig. 3-3)

C For indoor installations D Ceiling board E Maintenance hole F PCB side

w1:A minimum 350 mm is required for 90° bends in refrigerant piping. w2:AAis “Min. 200 mm”.

(Premise: The slope of drain piping is securable 1/100 or more. Required 200 mm or more, when not securable.)

In the case of less than 200 mm (for example A is 100 mm), the exchange work of Branch box from a maintenance hole becomes difficult (Only exchange work of a PCB, linear expansion valve coils, sensors and drain pan is possible).

w3:BBis “ 600”.

In the case of “ 450”, prepare a maintenance hole at a PCB side as it is shown in Fig. 3-3, and

“Min. 300 mm” is needed as distance A. In the case of less than 300 mm (for example A is 100 mm), the exchange work of Branch box, linear expansion valve coils, sensors, and drain pan from a maintenance hole becomes difficult. Only exchange work of a PCB is possible.

(3) Top View (Fig. 3-4)

G Refrigerant piping H When facing in the opposite direction to the refrigerant piping.

NOTE1: The branch box is only for indoor use. NOTE2: Please attach the special optional cover (PAC-AK350CVR-E) to install branch box in the outdoors.

Fig.3-1

unit : mm

Fig.3-3Fig.3-2

Fig.3-4

3-5. SIMPLIFIED PIPING SYSTEM

Liquid (mm)

Gas (mm)

{9.52

{15.88

The piping connection size differs according to the type and capacity of indoor units. Match the piping connection size of branch box with indoor unit. If the piping connection size of branch box does not match the piping connection size of indoor unit, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

BBB

2 branches pipe (joint) : optional parts

Branch box #1

Branch box #2

Piping connection size

Flare connection employed. (No brazing!)

■ In case of using 1-branch box Flare connection employed (No. brazing)

■ In case of using 2-branch boxes

Branch box

BB BBB

■ Installation procedure (2 branch pipe (joint)) Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.

4 SPECIFICATIONS

• Outdoor unit : MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2 MXZ-8A140VA3

Service Ref.

Rated Cooling capacity Rated power consumption w1 Operating current w1 Operating power factor w1

Cooling

Starting current (Outdoor unit) Rated Heating capacity Rated power consumption w1 Operating current w1 Operating power factor w1

Heating

Standard performance

Breaker Max. current (Outdoor unit only) Power supply (phase, cycle, voltage)

External finish Refrigerant control Compressor

Crankcase heater Heat exchanger Fan Fan (drive) o No.

Defrost method Noise level

OUTDOOR UNIT

Dimensions

Weight Refrigerant

Pipe size O.D. Connection method

REFRIGERANT PIPING

w1 In case of connecting 3 indoor units (6.0kW class), electrical data is only for outdoor unit. Conversion formula

[6.35mm

1/4 inch

Notes1.Rating Conditions (ISO T1)

3. Guaranteed voltage 198~264V, 50Hz 198~242V, 60Hz

Starting current (Outdoor unit)

Model Motor output Starter type Protection devices

Fan motor output Airflow

Cooling Heating

D H

Charge Oil (Model)

[9.52mm

3/8 inch

Cooling :Indoor : D.B. 27˚C (80˚F), W.B. 19˚C (66˚F) Outdoor : D.B. 35˚C (95˚F), W.B. 24˚C (75˚F) Heating :Indoor : D.B. 20˚C (68˚F) Outdoor : D.B. 7˚C (45˚F), W.B. 6˚C (43˚F) Refrigerant piping length (one way) : Main Piping (From outdoor unit to branch box) : 5m

2. Guaranteed operating range

Cooling

Heating

Upper limit Lower limit Upper limit Lower limit

Liquid

Gas Indoor side Outdoor side

[12.7mm

1/2 inch

[15.88mm

P-series D.B. 35˚C, W.B. 22.5˚C D.B. 19˚C, W.B. 15˚C

D.B. 28˚C D.B. 17˚C

kW kW

A kW kW

/min (CFM

dB mm (in.) mm (in.) mm (in.)

kg (lbs) kg (lbs)

L mm mm

5/8 inch

Branch Piping (From branch box to each indoor units) : each 3m

Indoor

MXZ-8A140VA/ MXZ-8A140VA1/ MXZ-8A140VA2/ MXZ-8A140VA3

17.30/16.55/15.86, 17.30

17.82/17.05/16.33, 17.82

Please refer to "10.ELECTRICAL WIRING".

Single, 50Hz, 220/230/240V, Single, 60Hz, 220V

Linear Expansion Valve (In branch box)

HP switch, LP switch, Discharge thermo

)

[19.05mm

3/4 inch

M-series, S-series

D.B. 32˚C, W.B. 23˚C

D.B. 21˚C, W.B. 15˚C

D.B. 27˚C D.B. 20˚C

Outdoor

D.B. 46˚C D.B. –5˚C

D.B. 21˚C, W.B. 15˚C

D.B. –15˚C, W.B. –15˚C

Conversion formula:

14.0

3.79

99.6 14

16.0

3.90

99.5 14

29.5

Munsell 3Y 7.8/1.1

Hermetic

ANB33FDCMT

2.9

Line start

—

Plate fin coil

Propeller fan o 2

0.060 +0.060 100 (3,530)

Reverse cycle

50 52

950 (37-3/8)

330+30 (13+1-3/16)

1,350 (53-1/8)

128 (282)

R410A

8.5 (18.7), 40m

2.3 (MEL56)

[9.52

[15.88

Flared Flared

kcal/h = kW o 860 Btu/h = kW o 3412 CFM = m3/min o 35.31

4. Above data are based on the indicated voltage.

Single, 50Hz, 220/230/240V, Single, 60Hz, 220V

5. Refer to the service manual of indoor unit for the indoor unit's specifications.

• Branch box : PAC-AK50BC PAC-AK30BC

Model name Connectable number of indoor units Power supply (from outdoor unit) Input Running current External finish Drain hose size (on site)

Dimensions Weight

Piping connection (Flare)

Wiring

Width Depth Height

Branch (indoor side) Main (outdoor side)

To indoor unit To outdoor unit

Liquid

Gas

Liquid

Gas

mm mm mm mm

kg mm mm mm mm

[9.52 O 4 {A,B,C,D}, [12.7 o 1{E}

W The piping connection size differs according to the type and capacity of indoor units. Match the piping connection size for

indoor and branch box. If the piping connection size of branch box does not match the piping connection size of indoor units, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

PAC-AK50BC PAC-AK30BC

MAX. 5

Single phase, 220/230/240V, 50Hz, Single phase, 220V, 60Hz

0.003

0.05

Galvanized sheets

O.D.20 (VP-16)

450 280 198

9.3

[6.35 O 5 {A,B,C,D,E}

[9.52

[15.88

Each 3-wire, plus earth wire

3-wire, plus earth wire

MAX. 3

8.1

[6.35 O 3 {A,B,C} [9.52 O 3 {A,B,C}

5 DATA

22 – 2200 – 2200 1050 4.6 4.4 4.8 25 – 2500 – 2500 1140 5.0 4.8 5.2 35 – 3500 – 3500 1410 6.2 5.9 6.5 50 – 5000 – 5000 1700 7.5 7.2 7.8 60 – 6000 – 6000 2000 8.8 8.4 9.2 71 – 7100 – 7100 2310 10.1 9.7 10.6

22 22 2200 2200 4400 1590 7.0 6.7 7.3 22 25 2200 2500 4700 1650 7.2 6.9 7.6 22 35 2200 3500 5700 1910 8.4 8.0 8.8 22 50 2200 5000 7200 2340 10.3 9.8 10.7 22 60 2200 6000 8200 2620 11.5 11.0 12.0 22 71 2200 7100 9300 2910 12.8 12.2 13.4 25 25 2500 2500 5000 1700 7.5 7.2 7.8 25 35 2500 3500 6000 2000 8.8 8.4 9.2 25 50 2500 5000 7500 2430 10.7 10.2 11.2 25 60 2500 6000 8500 2700 11.9 11.4 12.4 25 71 2500 7100 9600 2990 13.1 12.6 13.7 35 35 3500 3500 7000 2290 10.1 9.6 10.5 35 50 3500 5000 8500 2700 11.9 11.4 12.4 35 60 3500 6000 9500 2960 13.0 12.5 13.6 35 71 3500 7100 10600 3370 14.8 14.2 15.5 50 50 5000 5000 10000 3090 13.6 13.0 14.2 50 60 5000 6000 11000 3560 15.6 15.0 16.3 50 71 5000 7100 12100 4140 18.2 17.4 19.0 60 60 6000 6000 12000 4080 17.9 17.2 18.7 60 71 6000 7100 13100 4720 20.7 19.9 21.7 71 71 7000 7000 14000 5220 22.9 22.0 24.0

Number of operated indoor unit

Capacity of each

unit (W

)

Total

rated

capacity

(W)

Outdoor unit

input (W

)

Outdoor unit current (A

)

Unit A Unit B Unit A Unit B

230V 240V 220V

5-1. CAPACITY AND CHARACTERISTICS

Note:

• Cooling capacity is based on D.B. 27: / W.B. 19.0: (indoor temperature), D.B. 35: (outdoor temperature).

• Heating capacity is based on D.B. 20: (indoor temperature), D.B. 7: / W.B. 6: (outdoor temperature). The rated capacities below show the rise in the indoor unit connection capacity when operating frequency is constant. Values for changes in capacity are fixed after accounting for variations in operating frequency and should be used as reference values.

• Please refer not to the table below but to ”10. ELECTRICAL

(1) Cooling mode <Cooling>

WIRING” for the breaker selection.

Number of operated indoor unit

Unit A Unit B Unit C Unit A Unit B Unit C

22 22 22 2200 2200 2200 6600 2170 9.5 9.1 10.0 22 22 25 2200 2200 2500 6900 2260 9.9 9.5 10.4 22 22 35 2200 2200 3500 7900 2540 11.2 10.7 11.7 22 22 50 2200 2200 5000 9400 2940 12.9 12.4 13.5 22 22 60 2200 2200 6000 10400 3270 14.4 13.8 15.0 22 22 71 2200 2200 7100 11500 3810 16.7 16.0 17.5 22 25 25 2200 2500 2500 7200 2340 10.3 9.8 10.7 22 25 35 2200 2500 3500 8200 2620 11.5 11.0 12.0 22 25 50 2200 2500 5000 9700 3010 13.2 12.7 13.8 22 25 60 2200 2500 6000 10700 3410 15.0 14.4 15.7 22 25 71 2200 2500 7100 11800 3970 17.4 16.7 18.2 22 35 35 2200 3500 3500 9200 2880 12.6 12.1 13.2 22 35 50 2200 3500 5000 10700 3410 15.0 14.4 15.7 22 35 60 2200 3500 6000 11700 3920 17.2 16.5 18.0 22 35 71 2200 3500 7100 12800 4540 19.9 19.1 20.8 22 50 50 2200 5000 5000 12200 4190 18.4 17.6 19.2 22 50 60 2200 5000 6000 13200 4780 21.0 20.1 21.9 22 50 71 2150 4900 6950 14000 5220 22.9 22.0 24.0 22 60 60 2170 5920 5920 14000 5220 22.9 22.0 24.0 22 60 71 2010 5490 6500 14000 5040 22.1 21.2 23.1 22 71 71 1880 6060 6060 14000 4450 19.5 18.7 20.4 25 25 25 2500 2500 2500 7500 2430 10.7 10.2 11.2 25 25 35 2500 2500 3500 8500 2700 11.9 11.4 12.4 25 25 50 2500 2500 5000 10000 3090 13.6 13.0 14.2 25 25 60 2500 2500 6000 11000 3560 15.6 15.0 16.3

25 25 71 2500 2500 7100 12100 4140 18.2 17.4 19.0 25 35 35 2500 3500 3500 9500 2960 13.0 12.5 13.6 25 35 50 2500 3500 5000 11000 3560 15.6 15.0 16.3 25 35 60 2500 3500 6000 12000 4080 17.9 17.2 18.7 25 35 71 2500 3500 7100 13100 4720 20.7 19.9 21.7 25 50 50 2500 5000 5000 12500 4360 19.1 18.4 20.0 25 50 60 2500 5000 6000 13500 4970 21.8 20.9 22.8 25 50 71 2400 4790 6810 14000 5220 22.9 22.0 24.0 25 60 60 2410 5790 5790 14000 5220 22.9 22.0 24.0 25 60 71 2240 5380 6370 14000 4870 21.4 20.5 22.4 25 71 71 2100 5950 5950 14000 4310 18.9 18.1 19.8 35 35 35 3500 3500 3500 10500 3320 14.6 14.0 15.2 35 35 50 3500 3500 5000 12000 4080 17.9 17.2 18.7 35 35 60 3500 3500 6000 13000 4660 20.5 19.6 21.4 35 35 71 3480 3480 7050 14000 5220 22.9 22.0 24.0 35 50 50 3500 5000 5000 13500 4970 21.8 20.9 22.8 35 50 60 3380 4830 5790 14000 5220 22.9 22.0 24.0 35 50 71 3140 4490 6370 14000 4870 21.4 20.5 22.4 35 60 60 3160 5420 5420 14000 4920 21.6 20.7 22.6 35 60 71 2950 5060 5990 14000 4350 19.1 18.3 20.0 35 71 71 2770 5620 5620 14000 3900 17.1 16.4 17.9 50 50 50 4670 4670 4670 14000 5240 23.0 22.1 24.1 50 50 60 4380 4380 5250 14000 4650 20.4 19.6 21.3 50 50 71 4090 4090 5810 14000 4140 18.2 17.4 19.0 50 60 60 4120 4940 4940 14000 4180 18.4 17.6 19.2 50 60 71 3870 4640 5490 14000 3760 16.5 15.8 17.3 60 60 60 4670 4670 4670 14000 3790 16.6 15.9 17.3

Capacity of each unit (W

)

capacity

Total

rated

(W)

Outdoor unit

input (W

)

Outdoor unit current (A

230V 240V 220V

)

Number of operated indoor unit

Total

Capacity of each unit (W

Unit A Unit B Unit C Unit D Unit A Unit B Unit C Unit D

22 22 22 22 2200 2200 2200 2200 8800 2780 12.2 11.7 12.8 22 22 22 25 2200 2200 2200 2500 9100 2860 12.6 12.0 13.1 22 22 22 35 2200 2200 2200 3500 10100 3130 13.7 13.2 14.4 22 22 22 50 2200 2200 2200 5000 11600 3870 17.0 16.3 17.8 22 22 22 60 2200 2200 2200 6000 12600 4420 19.4 18.6 20.3 22 22 22 71 2200 2200 2200 7100 13700 5100 22.4 21.5 23.4 22 22 25 25 2200 2200 2500 2500 9400 2940 12.9 12.4 13.5 22 22 25 35 2200 2200 2500 3500 10400 3270 14.4 13.8 15.0 22 22 25 50 2200 2200 2500 5000 11900 4030 17.7 17.0 18.5 22 22 25 60 2200 2200 2500 6000 12900 4600 20.2 19.4 21.1 22 22 25 71 2200 2200 2500 7100 14000 5220 22.9 22.0 24.0 22 22 35 35 2200 2200 3500 3500 11400 3760 16.5 15.8 17.3 22 22 35 50 2200 2200 3500 5000 12900 4600 20.2 19.4 21.1 22 22 35 60 2200 2200 3500 6000 13900 5230 23.0 22.0 24.0 22 22 35 71 2050 2050 3270 6630 14000 5240 23.0 22.1 24.1 22 22 50 50 2140 2140 4860 4860 14000 5220 22.9 22.0 24.0 22 22 50 60 2000 2000 4550 5450 14000 4980 21.9 21.0 22.9 22 22 50 71 1870 1870 4240 6020 14000 4400 19.3 18.5 20.2 22 22 60 60 1880 1880 5120 5120 14000 4450 19.5 18.7 20.4 22 22 60 71 1760 1760 4800 5680 14000 3980 17.5 16.8 18.3 22 25 25 25 2200 2500 2500 2500 9700 3010 13.2 12.7 13.8 22 25 25 35 2200 2500 2500 3500 10700 3410 15.0 14.4 15.7 22 25 25 50 2200 2500 2500 5000 12200 4190 18.4 17.6 19.2 22 25 25 60 2200 2500 2500 6000 13200 4780 21.0 20.1 21.9 22 25 25 71 2150 2450 2450 6950 14000 5220 22.9 22.0 24.0 22 25 35 35 2200 2500 3500 3500 11700 3920 17.2 16.5 18.0 22 25 35 50 2200 2500 3500 5000 13200 4780 21.0 20.1 21.9 22 25 35 60 2170 2460 3450 5920 14000 5220 22.9 22.0 24.0 22 25 35 71 2010 2290 3200 6500 14000 5040 22.1 21.2 23.1 22 25 50 50 2100 2380 4760 4760 14000 5220 22.9 22.0 24.0 22 25 50 60 1960 2230 4460 5350 14000 4810 21.1 20.2 22.1 22 25 50 71 1830 2080 4170 5920 14000 4260 18.7 17.9 19.6 22 25 60 60 1840 2100 5030 5030 14000 4310 18.9 18.1 19.8 22 25 60 71 1730 1970 4720 5580 14000 3860 17.0 16.2 17.7 22 35 35 35 2200 3500 3500 3500 12700 4480 19.7 18.9 20.6 22 35 35 50 2170 3450 3450 4930 14000 5220 22.9 22.0 24.0 22 35 35 60 2030 3220 3220 5530 14000 5110 22.4 21.5 23.5 22 35 35 71 1890 3010 3010 6090 14000 4500 19.8 18.9 20.7 22 35 50 50 1960 3120 4460 4460 14000 4810 21.1 20.2 22.1 22 35 50 60 1840 2930 4190 5030 14000 4310 18.9 18.1 19.8 22 35 50 71 1730 2750 3930 5580 14000 3860 17.0 16.2 17.7 22 35 60 60 1730 2770 4750 4750 14000 3900 17.1 16.4 17.9 22 50 50 50 1790 4070 4070 4070 14000 4090 18.0 17.2 18.8 22 50 50 60 1690 3850 3850 4610 14000 3730 16.4 15.7 17.1 25 25 25 25 2500 2500 2500 2500 10000 3090 13.6 13.0 14.2 25 25 25 35 2500 2500 2500 3500 11000 3560 15.6 15.0 16.3 25 25 25 50 2500 2500 2500 5000 12500 4360 19.1 18.4 20.0 25 25 25 60 2500 2500 2500 6000 13500 4970 21.8 20.9 22.8 25 25 25 71 2400 2400 2400 6800 14000 5220 22.9 22.0 24.0 25 25 35 35 2500 2500 3500 3500 12000 4080 17.9 17.2 18.7 25 25 35 50 2500 2500 3500 5000 13500 4970 21.8 20.9 22.8 25 25 35 60 2410 2410 3380 5790 14000 5220 22.9 22.0 24.0 25 25 35 71 2240 2240 3140 6370 14000 4870 21.4 20.5 22.4 25 25 50 50 2330 2330 4670 4670 14000 5240 23.0 22.1 24.1 25 25 50 60 2190 2190 4380 5240 14000 4650 20.4 19.6 21.3 25 25 50 71 2050 2050 4090 5810 14000 4140 18.2 17.4 19.0 25 25 60 60 2060 2060 4940 4940 14000 4180 18.4 17.6 19.2 25 25 60 71 1930 1930 4640 5490 14000 3760 16.5 15.8 17.3 25 35 35 35 2500 3500 3500 3500 13000 4660 20.5 19.6 21.4 25 35 35 50 2410 3380 3380 4830 14000 5220 22.9 22.0 24.0 25 35 35 60 2260 3160 3160 5420 14000 4920 21.6 20.7 22.6 25 35 35 71 2110 2950 2950 5990 14000 4350 19.1 18.3 20.0 25 35 50 50 2180 3060 4380 4380 14000 4650 20.4 19.6 21.3 25 35 50 60 2060 2880 4120 4940 14000 4180 18.4 17.6 19.2 25 35 50 71 1930 2710 3870 5490 14000 3760 16.5 15.8 17.3 25 35 60 60 1940 2720 4670 4670 14000 3790 16.6 16.0 17.4 25 50 50 50 2000 4000 4000 4000 14000 3980 17.5 16.8 18.3 25 50 50 60 1890 3780 3780 4540 14000 3630 15.9 15.3 16.7 35 35 35 35 3500 3500 3500 3500 14000 5220 22.9 22.0 24.0 35 35 35 50 3160 3160 3160 4520 14000 4920 21.6 20.7 22.6 35 35 35 60 2970 2970 2970 5090 14000 4400 19.3 18.5 20.2 35 35 35 71 2780 2780 2780 5650 14000 3940 17.3 16.6 18.1 35 35 50 50 2880 2880 4120 4120 14000 4180 18.4 17.6 19.2 35 35 50 60 2720 2720 3890 4670 14000 3790 16.6 16.0 17.4 35 50 50 50 2650 3780 3780 3780 14000 3630 15.9 15.3 16.7

)

rated

capacity

(W)

Outdoor unit

input (W

Outdoor unit current (A

)

230V 240V 220V

)

Number of operated indoor unit

Total

Outdoor unit

Capacity of each unit (W

Unit A Unit B Unit C Unit D Unit E Unit A Unit B Unit C Unit D Unit E

22 22 22 22 22 2200 2200 2200 2200 2200 11000 3450 15.2 14.5 15.8 22 22 22 22 25 2200 2200 2200 2200 2500 11300 3610 15.9 15.2 16.6 22 22 22 22 35 2200 2200 2200 2200 3500 12300 4190 18.4 17.6 19.2 22 22 22 22 50 2200 2200 2200 2200 5000 13800 5200 22.8 21.9 23.9 22 22 22 22 60 2080 2080 2080 2080 5680 14000 5220 22.9 22.0 24.0 22 22 22 22 71 1940 1940 1940 1940 6240 14000 4700 20.6 19.8 21.6 22 22 22 25 25 2200 2200 2200 2500 2500 11600 3780 16.6 15.9 17.4 22 22 22 25 35 2200 2200 2200 2500 3500 12600 4370 19.2 18.4 20.1 22 22 22 25 50 2180 2180 2180 2480 4960 14000 5220 22.9 22.0 24.0 22 22 22 25 60 2040 2040 2040 2320 5560 14000 5170 22.7 21.8 23.7 22 22 22 25 71 1900 1900 1900 2160 6140 14000 4550 20.0 19.1 20.9 22 22 22 35 35 2200 2200 2200 3500 3500 13600 5060 22.2 21.3 23.2 22 22 22 35 50 2040 2040 2040 3250 4630 14000 5170 22.7 21.8 23.7 22 22 22 35 60 1910 1910 1910 3040 5220 14000 4600 20.2 19.4 21.1 22 22 22 35 71 1790 1790 1790 2850 5780 14000 4090 18.0 17.2 18.8 22 22 22 50 50 1860 1860 1860 4210 4210 14000 4350 19.1 18.3 20.0 22 22 22 50 60 1750 1750 1750 3980 4770 14000 3940 17.3 16.6 18.1 22 22 25 25 25 2200 2200 2500 2500 2500 11900 3950 17.3 16.6 18.1 22 22 25 25 35 2200 2200 2500 2500 3500 12900 4570 20.1 19.2 21.0 22 22 25 25 50 2140 2140 2430 2430 4860 14000 5220 22.9 22.0 24.0 22 22 25 25 60 2000 2000 2270 2270 5450 14000 4980 21.9 21.0 22.9 22 22 25 25 71 1870 1870 2120 2120 6020 14000 4400 19.3 18.5 20.2 22 22 25 35 35 2200 2200 2500 3500 3500 13900 5280 23.2 22.2 24.2 22 22 25 35 50 2000 2000 2270 3180 4550 14000 4980 21.9 21.0 22.9 22 22 25 35 60 1880 1880 2130 2990 5120 14000 4450 19.5 18.7 20.4 22 22 25 35 71 1760 1760 2000 2800 5680 14000 3980 17.5 16.8 18.3 22 22 25 50 50 1820 1820 2070 4140 4140 14000 4220 18.5 17.8 19.4 22 22 25 50 60 1720 1720 1960 3910 4690 14000 3830 16.8 16.1 17.6 22 22 35 35 35 2060 2060 3290 3290 3290 14000 5220 22.9 22.0 24.0 22 22 35 35 50 1880 1880 2990 2990 4260 14000 4450 19.5 18.7 20.4 22 22 35 35 60 1770 1770 2820 2820 4820 14000 4010 17.6 16.9 18.4 22 22 35 35 71 1660 1660 2650 2650 5370 14000 3630 15.9 15.3 16.7 22 22 35 50 50 1720 1720 2740 3910 3910 14000 3830 16.8 16.1 17.6 22 25 25 25 25 2200 2500 2500 2500 2500 12200 4120 18.1 17.3 18.9 22 25 25 25 35 2200 2500 2500 2500 3500 13200 4770 20.9 20.1 21.9 22 25 25 25 50 2100 2380 2380 2380 4760 14000 5220 22.9 22.0 24.0 22 25 25 25 60 1960 2230 2230 2230 5350 14000 4810 21.1 20.2 22.1 22 25 25 25 71 1830 2080 2080 2080 5920 14000 4260 18.7 17.9 19.6 22 25 25 35 35 2170 2460 2460 3450 3450 14000 5220 22.9 22.0 24.0 22 25 25 35 50 1960 2230 2230 3120 4460 14000 4810 21.1 20.2 22.1 22 25 25 35 60 1840 2100 2100 2930 5030 14000 4310 18.9 18.1 19.8 22 25 25 35 71 1730 1970 1970 2750 5580 14000 3860 17.0 16.2 17.7 22 25 25 50 50 1790 2030 2030 4070 4070 14000 4090 18.0 17.2 18.8 22 25 25 50 60 1690 1920 1920 3850 4620 14000 3730 16.4 15.7 17.1 22 25 35 35 35 2030 2300 3220 3220 3220 14000 5110 22.4 21.5 23.5 22 25 35 35 50 1840 2100 2930 2930 4190 14000 4310 18.9 18.1 19.8 22 25 35 35 60 1740 1980 2770 2770 4740 14000 3900 17.1 16.4 17.9 22 25 35 50 50 1690 1920 2690 3850 3850 14000 3730 16.4 15.7 17.1 22 35 35 35 35 1900 3020 3020 3020 3020 14000 4550 20.0 19.1 20.9 22 35 35 35 50 1740 2770 2770 2770 3950 14000 3900 17.1 16.4 17.9 25 25 25 25 25 2500 2500 2500 2500 2500 12500 4310 18.9 18.1 19.8 25 25 25 25 35 2500 2500 2500 2500 3500 13500 4980 21.9 21.0 22.9 25 25 25 25 50 2330 2330 2330 2330 4670 14000 5240 23.0 22.1 24.1 25 25 25 25 60 2190 2190 2190 2190 5240 14000 4650 20.4 19.6 21.3 25 25 25 25 71 2050 2050 2050 2050 5800 14000 4140 18.2 17.4 19.0 25 25 25 35 35 2410 2410 2410 3380 3380 14000 5220 22.9 22.0 24.0 25 25 25 35 50 2190 2190 2190 3060 4370 14000 4650 20.4 19.6 21.3 25 25 25 35 60 2060 2060 2060 2880 4940 14000 4180 18.4 17.6 19.2 25 25 25 35 71 1930 1930 1930 2710 5490 14000 3760 16.5 15.8 17.3 25 25 25 50 50 2000 2000 2000 4000 4000 14000 3980 17.5 16.8 18.3 25 25 25 50 60 1890 1890 1890 3780 4540 14000 3630 15.9 15.3 16.7 25 25 35 35 35 2260 2260 3160 3160 3160 14000 4920 21.6 20.7 22.6 25 25 35 35 50 2060 2060 2880 2880 4120 14000 4180 18.4 17.6 19.2 25 25 35 35 60 1940 1940 2720 2720 4670 14000 3790 16.6 16.0 17.4 25 25 35 50 50 1890 1890 2650 3780 3780 14000 3630 15.9 15.3 16.7 25 35 35 35 35 2120 2970 2970 2970 2970 14000 4400 19.3 18.5 20.2 25 35 35 35 50 1940 2720 2720 2720 3890 14000 3790 16.6 16.0 17.4 35 35 35 35 35 2800 2800 2800 2800 2800 14000 3980 17.5 16.8 18.3

)

rated

capacity

(W)

input (W

Outdoor unit current (A

)

230V 240V 220V

)

Total

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit A Unit B Unit C Unit D Unit E Unit F

22 22 22 22 22 22 2200 2200 2200 2200 2200 2200 13200 4770 20.9 20.1 21.9 22 22 22 22 22 25 2200 2200 2200 2200 2200 2500 13500 4980 21.9 21.0 22.9 22 22 22 22 22 35 2120 2120 2120 2120 2120 3380 14000 5220 22.9 22.0 24.0 22 22 22 22 22 50 1920 1920 1920 1920 1920 4380 14000 4650 20.4 19.6 21.3 22 22 22 22 22 60 1810 1810 1810 1810 1810 4940 14000 4180 18.4 17.6 19.2 22 22 22 22 22 71 1700 1700 1700 1700 1700 5490 14000 3760 16.5 15.8 17.3 22 22 22 22 25 25 2200 2200 2200 2200 2500 2500 13800 5200 22.8 21.9 23.9 22 22 22 22 25 35 2080 2080 2080 2080 2360 3310 14000 5220 22.9 22.0 24.0 22 22 22 22 25 50 1890 1890 1890 1890 2150 4290 14000 4500 19.8 18.9 20.7 22 22 22 22 25 60 1780 1780 1780 1780 2020 4860 14000 4050 17.8 17.0 18.6 22 22 22 22 25 71 1670 1670 1670 1670 1900 5400 14000 3660 16.1 15.4 16.8 22 22 22 22 35 35 1950 1950 1950 1950 3100 3100 14000 4750 20.9 20.0 21.8 22 22 22 22 35 50 1780 1780 1780 1780 2830 4050 14000 4050 17.8 17.0 18.6 22 22 22 22 35 60 1680 1680 1680 1680 2680 4590 14000 3690 16.2 15.5 16.9 22 22 22 25 25 25 2180 2180 2180 2480 2480 2480 14000 5220 22.9 22.0 24.0 22 22 22 25 25 35 2040 2040 2040 2320 2320 3240 14000 5170 22.7 21.8 23.7 22 22 22 25 25 50 1860 1860 1860 2100 2100 4220 14000 4350 19.1 18.3 20.0 22 22 22 25 25 60 1750 1750 1750 1990 1990 4770 14000 3940 17.3 16.6 18.1 22 22 22 25 35 35 1910 1910 1910 2170 3040 3040 14000 4600 20.2 19.4 21.1 22 22 22 25 35 50 1750 1750 1750 1990 2780 3980 14000 3940 17.3 16.6 18.1 22 22 22 35 35 35 1800 1800 1800 2860 2860 2860 14000 4140 18.2 17.4 19.0 22 22 25 25 25 25 2140 2140 2430 2430 2430 2430 14000 5220 22.9 22.0 24.0 22 22 25 25 25 35 2000 2000 2270 2270 2270 3180 14000 4980 21.9 21.0 22.9 22 22 25 25 25 50 1820 1820 2070 2070 2070 4140 14000 4220 18.5 17.8 19.4 22 22 25 25 25 60 1720 1720 1960 1960 1960 4680 14000 3830 16.8 16.1 17.6 22 22 25 25 35 35 1880 1880 2130 2130 2990 2990 14000 4450 19.5 18.7 20.4 22 22 25 25 35 50 1720 1720 1960 1960 2740 3900 14000 3830 16.8 16.1 17.6 22 22 25 35 35 35 1770 1770 2000 2820 2820 2820 14000 4010 17.6 16.9 18.4 22 22 35 35 35 35 1670 1670 2660 2660 2660 2660 14000 3660 16.1 15.4 16.8 22 25 25 25 25 25 2100 2380 2380 2380 2380 2380 14000 5220 22.9 22.0 24.0 22 25 25 25 25 35 1960 2230 2230 2230 2230 3120 14000 4810 21.1 20.2 22.1 22 25 25 25 25 50 1790 2030 2030 2030 2030 4070 14000 4090 18.0 17.2 18.8 22 25 25 25 25 60 1690 1920 1920 1920 1920 4620 14000 3730 16.4 15.7 17.1 22 25 25 25 35 35 1840 2100 2100 2100 2930 2930 14000 4310 18.9 18.1 19.8 22 25 25 25 35 50 1690 1920 1920 1920 2690 3850 14000 3730 16.4 15.7 17.1 22 25 25 35 35 35 1730 1980 1980 2770 2770 2770 14000 3900 17.1 16.4 17.9 25 25 25 25 25 25 2330 2330 2330 2330 2330 2330 14000 5240 23.0 22.1 24.1 25 25 25 25 25 35 2190 2190 2190 2190 2190 3050 14000 4650 20.4 19.6 21.3 25 25 25 25 25 50 2000 2000 2000 2000 2000 4000 14000 3980 17.5 16.8 18.3 25 25 25 25 25 60 1890 1890 1890 1890 1890 4540 14000 3630 15.9 15.3 16.7 25 25 25 25 35 35 2060 2060 2060 2060 2880 2880 14000 4180 18.4 17.6 19.2 25 25 25 25 35 50 1890 1890 1890 1890 2650 3780 14000 3630 15.9 15.3 16.7 25 25 25 35 35 35 1940 1940 1940 2720 2720 2720 14000 3790 16.6 16.0 17.4

Capacity of each unit (W

)

rated

capacity

(W)

Outdoor unit

)

input (W

Outdoor unit current (A

230V 240V 220V

)

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit A Unit B Unit C Unit D Unit E Unit F Unit G

22 22 22 22 22 22 22 2000 2000 2000 2000 2000 2000 2000 14000 4980 21.9 21.0 22.9 22 22 22 22 22 22 25 1960 1960 1960 1960 1960 1960 2230 14000 4810 21.1 20.2 22.1 22 22 22 22 22 22 35 1840 1840 1840 1840 1840 1840 2930 14000 4310 18.9 18.1 19.8 22 22 22 22 22 22 50 1690 1690 1690 1690 1690 1690 3850 14000 3730 16.4 15.7 17.1 22 22 22 22 22 25 25 1920 1920 1920 1920 1920 2190 2190 14000 4650 20.4 19.6 21.3 22 22 22 22 22 25 35 1810 1810 1810 1810 1810 2060 2880 14000 4180 18.4 17.6 19.2 22 22 22 22 22 25 50 1660 1660 1660 1660 1660 1890 3780 14000 3630 15.9 15.3 16.7 22 22 22 22 22 35 35 1710 1710 1710 1710 1710 2720 2720 14000 3790 16.6 16.0 17.4 22 22 22 22 25 25 25 1890 1890 1890 1890 2140 2140 2140 14000 4500 19.8 18.9 20.7 22 22 22 22 25 25 35 1780 1780 1780 1780 2020 2020 2830 14000 4050 17.8 17.0 18.6 22 22 22 22 25 35 35 1680 1680 1680 1680 1910 2680 2680 14000 3690 16.2 15.5 16.9 22 22 22 25 25 25 25 1850 1850 1850 2110 2110 2110 2110 14000 4350 19.1 18.3 20.0 22 22 22 25 25 25 35 1750 1750 1750 1990 1990 1990 2780 14000 3940 17.3 16.6 18.1 22 22 25 25 25 25 25 1820 1820 2070 2070 2070 2070 2070 14000 4220 18.5 17.8 19.4 22 22 25 25 25 25 35 1710 1710 1960 1960 1960 1960 2740 14000 3830 16.8 16.1 17.6 22 25 25 25 25 25 25 1790 2030 2030 2030 2030 2030 2030 14000 4090 18.0 17.2 18.8 22 25 25 25 25 25 35 1690 1920 1920 1920 1920 1920 2690 14000 3730 16.4 15.7 17.1 25 25 25 25 25 25 25 2000 2000 2000 2000 2000 2000 2000 14000 3980 17.5 16.8 18.3 25 25 25 25 25 25 35 1890 1890 1890 1890 1890 1890 2650 14000 3630 15.9 15.3 16.7

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H

22 22 22 22 22 22 22 22 1750 1750 1750 1750 1750 1750 1750 1750 14000 3940 17.3 16.6 18.1 22 22 22 22 22 22 22 25 1720 1720 1720 1720 1720 1720 1720 1960 14000 3830 16.8 16.1 17.6 22 22 22 22 22 22 25 25 1690 1690 1690 1690 1690 1690 1920 1920 14000 3730 16.4 15.7 17.1 22 22 22 22 22 25 25 25 1660 1660 1660 1660 1660 1890 1890 1890 14000 3630 15.9 15.3 16.7

Capacity of each unit

(W)

Total

rated

capacity

(W)

Total rated

capacity

(W)

Outdoor unit

)

input (W

Outdoor unit

)

input (W

Outdoor unit current

230V 240V 220V

Outdoor unit current

230V 240V 220V

(A)

(2) Heating mode <Heating>

Number of operated indoor unit

Unit A Unit B Unit A Unit B

22 – 3300 – 3300 1130 5.0 4.8 5.2 25 – 3600 – 3600 1240 5.4 5.2 5.7

35 – 4000 – 4000 1370 6.0 5.8 6.3 50 – 7200 – 7200 2470 10.8 10.4 11.3 60 – 7900 – 7900 2740 12.0 11.5 12.6 71 – 8600 – 8600 3020 13.3 12.7 13.9 22 22 2500 2500 5000 1720 7.6 7.2 7.9 22 25 2530 2870 5400 1860 8.2 7.8 8.5 22 35 2510 3990 6500 2250 9.9 9.5 10.3 22 50 2510 5690 8200 2880 12.6 12.1 13.2 22 60 2520 6880 9400 3340 14.7 14.1 15.3 22 71 2510 8090 10600 3810 16.7 16.0 17.5 25 25 2850 2850 5700 1960 8.6 8.2 9.0 25 35 2880 4020 6900 2400 10.5 10.1 11.0 25 50 2870 5730 8600 3030 13.3 12.8 13.9 25 60 2850 6850 9700 3450 15.2 14.5 15.8 25 71 2860 8140 11000 3960 17.4 16.7 18.2 35 35 4000 4000 8000 2810 12.3 11.8 12.9 35 50 3990 5710 9700 3450 15.2 14.5 15.8 35 60 4020 6880 10900 3920 17.2 16.5 18.0 35 71 4000 8100 12100 4350 19.1 18.3 20.0 50 50 5700 5700 11400 4120 18.1 17.3 18.9 50 60 5730 6870 12600 4510 19.8 19.0 20.7 50 71 5700 8100 13800 4880 21.4 20.5 22.4 60 60 6850 6850 13700 4850 21.3 20.4 22.3 60 71 6870 8130 15000 5260 23.1 22.1 24.2 71 71 8000 8000 16000 5430 23.8 22.9 24.9

Capacity of

each unit (W

)

Total

rated

capacity

(W)

Outdoor unit

input (W

)

Outdoor unit current (A

230V 240V 220V

)

Number of operated indoor unit

Unit A Unit B Unit C Unit A Unit B Unit C

22 22 22 2500 2500 2500 7500 2620 11.5 11.0 12.0 22 22 25 2520 2520 2860 7900 2770 12.2 11.7 12.7 22 22 35 2510 2510 3980 9000 3190 14.0 13.4 14.6 22 22 50 2500 2500 5690 10700 3850 16.9 16.2 17.7 22 22 60 2520 2520 6860 11900 4280 18.8 18.0 19.7 22 22 71 2510 2510 8090 13100 4660 20.5 19.6 21.4 22 25 25 2500 2850 2850 8200 2880 12.6 12.1 13.2 22 25 35 2520 2870 4010 9400 3340 14.7 14.1 15.3 22 25 50 2520 2860 5720 11100 4000 17.6 16.8 18.4 22 25 60 2510 2850 6840 12200 4380 19.2 18.4 20.1 22 25 71 2520 2860 8120 13500 4790 21.0 20.2 22.0 22 35 35 2510 3990 3990 10500 3770 16.6 15.9 17.3 22 35 50 2510 3990 5700 12200 4380 19.2 18.4 20.1 22 35 60 2520 4010 6870 13400 4760 20.9 20.0 21.9 22 35 71 2510 3990 8100 14600 5130 22.5 21.6 23.6 22 50 50 2500 5700 5700 13900 4910 21.6 20.7 22.5 22 50 60 2520 5720 6860 15100 5290 23.2 22.3 24.3 22 50 71 2460 5590 7940 16000 5370 23.6 22.6 24.7 22 60 60 2480 6760 6760 16000 5430 23.8 22.9 24.9 22 60 71 2300 6270 7420 16000 4880 21.4 20.5 22.4 22 71 71 2140 6930 6930 16000 4430 19.5 18.6 20.3 25 25 25 2860 2860 2860 8600 3030 13.3 12.8 13.9 25 25 35 2850 2850 3990 9700 3450 15.2 14.5 15.8 25 25 50 2850 2850 5700 11400 4120 18.1 17.3 18.9 25 25 60 2860 2860 6870 12600 4510 19.8 19.0 20.7

25 25 71 2850 2850 8100 13800 4880 21.4 20.5 22.4 25 35 35 2860 4020 4020 10900 3920 17.2 16.5 18.0 25 35 50 2860 4010 5730 12600 4510 19.8 19.0 20.7 25 35 60 2850 4000 6850 13700 4850 21.3 20.4 22.3 25 35 71 2860 4010 8130 15000 5260 23.1 22.1 24.2 25 50 50 2860 5720 5720 14300 5040 22.1 21.2 23.1 25 50 60 2850 5700 6840 15400 5380 23.6 22.6 24.7 25 50 71 2740 5480 7780 16000 5210 22.9 21.9 23.9 25 60 60 2760 6620 6620 16000 5270 23.1 22.2 24.2 25 60 71 2560 6150 7280 16000 4750 20.9 20.0 21.8 25 71 71 2400 6800 6800 16000 4320 19.0 18.2 19.8 35 35 35 4000 4000 4000 12000 4320 19.0 18.2 19.8 35 35 50 4000 4000 5700 13700 4850 21.3 20.4 22.3 35 35 60 4010 4010 6880 14900 5230 23.0 22.0 24.0 35 35 71 3970 3970 8060 16000 5480 24.1 23.1 25.2 35 50 50 3990 5700 5700 15400 5380 23.6 22.6 24.7 35 50 60 3860 5520 6620 16000 5270 23.1 22.2 24.2 35 50 71 3590 5130 7280 16000 4750 20.9 20.0 21.8 35 60 60 3610 6190 6190 16000 4790 21.0 20.2 22.0 35 60 71 3370 5780 6840 16000 4350 19.1 18.3 20.0 35 71 71 3160 6420 6420 16000 3990 17.5 16.8 18.3 50 50 50 5330 5330 5330 16000 5020 22.0 21.1 23.0 50 50 60 5000 5000 6000 16000 4580 20.1 19.3 21.0 50 50 71 4680 4680 6640 16000 4180 18.4 17.6 19.2 50 60 60 4700 5650 5650 16000 4210 18.5 17.7 19.3 50 60 71 4420 5300 6280 16000 3870 17.0 16.3 17.8 60 60 60 5330 5330 5330 16000 3900 17.1 16.3 17.8

Capacity of each unit (W

)

capacity

Total

rated

(W)

Outdoor unit

input (W

)

Outdoor unit current (A

230V 240V 220V

)

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit A Unit B Unit C Unit D

22 22 22 22 2520 2520 2520 2520 10100 3610 15.9 15.2 16.6 22 22 22 25 2510 2510 2510 2860 10400 3730 16.4 15.7 17.1 22 22 22 35 2500 2500 2500 3990 11500 4150 18.2 17.5 19.1 22 22 22 50 2520 2520 2520 5730 13300 4730 20.8 19.9 21.7 22 22 22 60 2510 2510 2510 6860 14400 5070 22.3 21.3 23.3 22 22 22 71 2520 2520 2520 8140 15700 5470 24.0 23.0 25.1 22 22 25 25 2500 2500 2850 2850 10700 3850 16.9 16.2 17.7 22 22 25 35 2520 2520 2860 4000 11900 4280 18.8 18.0 19.7 22 22 25 50 2510 2510 2860 5710 13600 4820 21.2 20.3 22.1 22 22 25 60 2510 2510 2850 6830 14700 5160 22.7 21.7 23.7 22 22 25 71 2510 2510 2860 8110 16000 5540 24.3 23.3 25.4 22 22 35 35 2510 2510 3990 3990 13000 4630 20.3 19.5 21.3 22 22 35 50 2510 2510 3990 5690 14700 5160 22.7 21.7 23.7 22 22 35 60 2520 2520 4000 6860 15900 5530 24.3 23.3 25.4 22 22 35 71 2350 2350 3730 7570 16000 5020 22.0 21.1 23.0 22 22 50 50 2440 2440 5560 5560 16000 5320 23.4 22.4 24.4 22 22 50 60 2290 2290 5190 6230 16000 4830 21.2 20.3 22.2 22 22 50 71 2130 2130 4850 6880 16000 4390 19.3 18.5 20.2 22 22 60 60 2150 2150 5850 5850 16000 4430 19.5 18.6 20.3 22 22 60 71 2010 2010 5490 6490 16000 4050 17.8 17.0 18.6 22 25 25 25 2520 2860 2860 2860 11100 4000 17.6 16.8 18.4 22 25 25 35 2510 2850 2850 3990 12200 4380 19.2 18.4 20.1 22 25 25 50 2510 2850 2850 5690 13900 4910 21.6 20.7 22.5 22 25 25 60 2520 2860 2860 6860 15100 5290 23.2 22.3 24.3 22 25 25 71 2460 2800 2800 7940 16000 5370 23.6 22.6 24.7 22 25 35 35 2520 2860 4010 4010 13400 4760 20.9 20.0 21.9 22 25 35 50 2520 2860 4000 5720 15100 5290 23.2 22.3 24.3 22 25 35 60 2480 2820 3940 6760 16000 5430 23.8 22.9 24.9 22 25 35 71 2300 2610 3660 7420 16000 4880 21.4 20.5 22.4 22 25 50 50 2390 2720 5440 5440 16000 5160 22.7 21.7 23.7 22 25 50 60 2240 2550 5100 6110 16000 4700 20.6 19.8 21.6 22 25 50 71 2100 2380 4760 6760 16000 4280 18.8 18.0 19.7 22 25 60 60 2100 2400 5750 5750 16000 4320 19.0 18.2 19.8 22 25 60 71 1980 2250 5390 6380 16000 3960 17.4 16.7 18.2 22 35 35 35 2500 4000 4000 4000 14500 5100 22.4 21.5 23.4 22 35 35 50 2480 3940 3940 5630 16000 5430 23.8 22.9 24.9

22 35 35 60 2320 3680 3680 6320 16000 4920 21.6 20.7 22.6 22 35 35 71 2160 3440 3440 6960 16000 4460 19.6 18.8 20.5 22 35 50 50 2230 3570 5100 5100 16000 4700 20.6 19.8 21.6 22 35 50 60 2110 3350 4790 5750 16000 4320 19.0 18.2 19.8 22 35 50 71 1980 3150 4490 6380 16000 3960 17.4 16.7 18.2 22 35 60 60 1990 3160 5420 5420 16000 3990 17.5 16.8 18.3 22 50 50 50 2050 4650 4650 4650 16000 4150 18.2 17.5 19.1 22 50 50 60 1930 4400 4400 5270 16000 3850 16.9 16.2 17.7 25 25 25 25 2850 2850 2850 2850 11400 4120 18.1 17.3 18.9 25 25 25 35 2860 2860 2860 4010 12600 4510 19.8 19.0 20.7 25 25 25 50 2860 2860 2860 5720 14300 5040 22.1 21.2 23.1 25 25 25 60 2850 2850 2850 6840 15400 5380 23.6 22.6 24.7 25 25 25 71 2740 2740 2740 7780 16000 5210 22.9 21.9 23.9 25 25 35 35 2850 2850 4000 4000 13700 4850 21.3 20.4 22.3 25 25 35 50 2850 2850 3990 5700 15400 5380 23.6 22.6 24.7 25 25 35 60 2760 2760 3860 6620 16000 5270 23.1 22.2 24.2 25 25 35 71 2560 2560 3590 7280 16000 4750 20.9 20.0 21.8 25 25 50 50 2670 2670 5330 5330 16000 5020 22.0 21.1 23.0 25 25 50 60 2500 2500 5000 6000 16000 4580 20.1 19.3 21.0 25 25 50 71 2340 2340 4680 6640 16000 4180 18.4 17.6 19.2 25 25 60 60 2350 2350 5650 5650 16000 4210 18.5 17.7 19.3 25 25 60 71 2210 2210 5300 6280 16000 3870 17.0 16.3 17.8 25 35 35 35 2870 4010 4010 4010 14900 5230 23.0 22.0 24.0 25 35 35 50 2760 3860 3860 5520 16000 5270 23.1 22.2 24.2 25 35 35 60 2580 3610 3610 6190 16000 4790 21.0 20.2 22.0 25 35 35 71 2410 3370 3370 6840 16000 4350 19.1 18.3 20.0 25 35 50 50 2500 3500 5000 5000 16000 4580 20.1 19.3 21.0 25 35 50 60 2350 3290 4710 5650 16000 4210 18.5 17.7 19.3 25 35 50 71 2210 3090 4420 6280 16000 3870 17.0 16.3 17.8 25 35 60 60 2220 3110 5330 5330 16000 3900 17.1 16.4 17.9 25 50 50 50 2290 4570 4570 4570 16000 4050 17.8 17.0 18.6 25 50 50 60 2160 4320 4320 5190 16000 3760 16.5 15.8 17.3 35 35 35 35 4000 4000 4000 4000 16000 5540 24.3 23.3 25.4 35 35 35 50 3610 3610 3610 5160 16000 4790 21.0 20.2 22.0 35 35 35 60 3390 3390 3390 5820 16000 4390 19.3 18.5 20.2 35 35 35 71 3180 3180 3180 6450 16000 4020 17.7 16.9 18.5 35 35 50 50 3290 3290 4710 4710 16000 4210 18.5 17.7 19.3 35 35 50 60 3110 3110 4440 5330 16000 3900 17.1 16.4 17.9 35 50 50 50 3030 4320 4320 4320 16000 3760 16.5 15.8 17.3

Capacity of each unit (W

Total

Outdoor unit

)

rated

capacity

(W)

input (W

Outdoor unit current (A

)

230V 240V 220V

)

Number of operated indoor unit

Total

Outdoor unit

Capacity of each unit (W

Unit A Unit B Unit C Unit D Unit E Unit A Unit B Unit C Unit D Unit E

22 22 22 22 22 2520 2520 2520 2520 2520 12600 4510 19.8 19.0 20.7 22 22 22 22 25 2510 2510 2510 2510 2850 12900 4600 20.2 19.4 21.1 22 22 22 22 35 2520 2520 2520 2520 4010 14100 4980 21.9 21.0 22.9 22 22 22 22 50 2520 2520 2520 2520 5720 15800 5500 24.2 23.1 25.3 22 22 22 22 60 2380 2380 2380 2380 6480 16000 5110 22.4 21.5 23.5 22 22 22 22 71 2210 2210 2210 2210 7140 16000 4620 20.3 19.4 21.2 22 22 22 25 25 2520 2520 2520 2870 2870 13300 4730 20.8 19.9 21.7 22 22 22 25 35 2510 2510 2510 2860 4000 14400 5070 22.3 21.3 23.3 22 22 22 25 50 2500 2500 2500 2840 5660 16000 5480 24.1 23.1 25.2 22 22 22 25 60 2330 2330 2330 2650 6360 16000 4970 21.8 20.9 22.8 22 22 22 25 71 2170 2170 2170 2470 7010 16000 4500 19.8 18.9 20.7 22 22 22 35 35 2510 2510 2510 3980 3980 15500 5410 23.8 22.8 24.8 22 22 22 35 50 2330 2330 2330 3710 5300 16000 4970 21.8 20.9 22.8 22 22 22 35 60 2190 2190 2190 3480 5950 16000 4540 19.9 19.1 20.8 22 22 22 35 71 2050 2050 2050 3260 6590 16000 4150 18.2 17.5 19.1 22 22 22 50 50 2120 2120 2120 4820 4820 16000 4350 19.1 18.3 20.0 22 22 22 50 60 2000 2000 2000 4550 5450 16000 4020 17.7 16.9 18.5 22 22 25 25 25 2510 2510 2860 2860 2860 13600 4820 21.2 20.3 22.1 22 22 25 25 35 2510 2510 2850 2850 3980 14700 5160 22.7 21.7 23.7 22 22 25 25 50 2440 2440 2780 2780 5560 16000 5320 23.4 22.4 24.4 22 22 25 25 60 2290 2290 2600 2600 6220 16000 4830 21.2 20.3 22.2 22 22 25 25 71 2130 2130 2420 2420 6880 16000 4390 19.3 18.5 20.2 22 22 25 35 35 2520 2520 2860 4000 4000 15900 5530 24.3 23.3 25.4 22 22 25 35 50 2290 2290 2600 3640 5180 16000 4830 21.2 20.3 22.2 22 22 25 35 60 2150 2150 2440 3410 5850 16000 4430 19.5 18.6 20.3 22 22 25 35 71 2010 2010 2290 3200 6490 16000 4050 17.8 17.0 18.6 22 22 25 50 50 2080 2080 2370 4730 4730 16000 4250 18.7 17.9 19.5 22 22 25 50 60 1970 1970 2230 4470 5360 16000 3930 17.3 16.5 18.0 22 22 35 35 35 2360 2360 3760 3760 3760 16000 5060 22.2 21.3 23.2 22 22 35 35 50 2150 2150 3410 3410 4880 16000 4430 19.5 18.6 20.3 22 22 35 35 60 2020 2020 3220 3220 5520 16000 4080 17.9 17.2 18.7 22 22 35 35 71 1900 1900 3030 3030 6140 16000 3760 16.5 15.8 17.3 22 22 35 50 50 1970 1970 3120 4470 4470 16000 3930 17.3 16.5 18.0 22 25 25 25 25 2500 2850 2850 2850 2850 13900 4910 21.6 20.7 22.5 22 25 25 25 35 2520 2860 2860 2860 4000 15100 5290 23.2 22.3 24.3 22 25 25 25 50 2390 2720 2720 2720 5440 16000 5160 22.7 21.7 23.7 22 25 25 25 60 2240 2550 2550 2550 6110 16000 4700 20.6 19.8 21.6 22 25 25 25 71 2100 2380 2380 2380 6760 16000 4280 18.8 18.0 19.7 22 25 25 35 35 2480 2820 2820 3940 3940 16000 5430 23.8 22.9 24.9 22 25 25 35 50 2240 2550 2550 3570 5090 16000 4700 20.6 19.8 21.6 22 25 25 35 60 2110 2400 2400 3350 5740 16000 4320 19.0 18.2 19.8 22 25 25 35 71 1980 2250 2250 3150 6370 16000 3960 17.4 16.7 18.2 22 25 25 50 50 2040 2330 2330 4650 4650 16000 4150 18.2 17.5 19.1 22 25 25 50 60 1930 2200 2200 4400 5270 16000 3850 16.9 16.2 17.7 22 25 35 35 35 2320 2630 3680 3680 3680 16000 4920 21.6 20.7 22.6 22 25 35 35 50 2110 2400 3350 3350 4790 16000 4320 19.0 18.2 19.8 22 25 35 35 60 1990 2260 3160 3160 5420 16000 3990 17.5 16.8 18.3 22 25 35 50 50 1920 2200 3080 4400 4400 16000 3850 16.9 16.2 17.7 22 35 35 35 35 2160 3460 3460 3460 3460 16000 4500 19.8 18.9 20.7 22 35 35 35 50 1990 3160 3160 3160 4520 16000 3990 17.5 16.8 18.3 25 25 25 25 25 2860 2860 2860 2860 2860 14300 5040 22.1 21.2 23.1 25 25 25 25 35 2850 2850 2850 2850 3990 15400 5380 23.6 22.6 24.7 25 25 25 25 50 2670 2670 2670 2670 5320 16000 5020 22.0 21.1 23.0 25 25 25 25 60 2500 2500 2500 2500 6000 16000 4580 20.1 19.3 21.0 25 25 25 25 71 2340 2340 2340 2340 6640 16000 4180 18.4 17.6 19.2 25 25 25 35 35 2760 2760 2760 3860 3860 16000 5270 23.1 22.2 24.2 25 25 25 35 50 2500 2500 2500 3500 5000 16000 4580 20.1 19.3 21.0 25 25 25 35 60 2350 2350 2350 3290 5650 16000 4210 18.5 17.7 19.3 25 25 25 35 71 2210 2210 2210 3090 6280 16000 3870 17.0 16.3 17.8 25 25 25 50 50 2290 2290 2290 4560 4560 16000 4050 17.8 17.0 18.6 25 25 25 50 60 2160 2160 2160 4320 5190 16000 3760 16.5 15.8 17.3 25 25 35 35 35 2580 2580 3610 3610 3610 16000 4790 21.0 20.2 22.0 25 25 35 35 50 2350 2350 3290 3290 4710 16000 4210 18.5 17.7 19.3 25 25 35 35 60 2220 2220 3110 3110 5330 16000 3900 17.1 16.4 17.9 25 25 35 50 50 2160 2160 3030 4320 4320 16000 3760 16.5 15.8 17.3 25 35 35 35 35 2420 3390 3390 3390 3390 16000 4390 19.3 18.5 20.2 25 35 35 35 50 2220 3110 3110 3110 4440 16000 3900 17.1 16.4 17.9 35 35 35 35 35 3200 3200 3200 3200 3200 16000 4050 17.8 17.0 18.6

)

rated

capacity

(W)

input (W

Outdoor unit current (A

)

230V 240V 220V

)

Total

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit A Unit B Unit C Unit D Unit E Unit F

22 22 22 22 22 22 2510 2510 2510 2510 2510 2510 15100 5290 23.2 22.3 24.3 22 22 22 22 22 25 2510 2510 2510 2510 2510 2850 15400 5380 23.6 22.6 24.7 22 22 22 22 22 35 2430 2430 2430 2430 2430 3850 16000 5270 23.1 22.2 24.2 22 22 22 22 22 50 2200 2200 2200 2200 2200 5000 16000 4580 20.1 19.3 21.0 22 22 22 22 22 60 2070 2070 2070 2070 2070 5650 16000 4210 18.5 17.7 19.3 22 22 22 22 22 71 1940 1940 1940 1940 1940 6280 16000 3870 17.0 16.3 17.8 22 22 22 22 25 25 2520 2520 2520 2520 2860 2860 15800 5500 24.2 23.1 25.3 22 22 22 22 25 35 2380 2380 2380 2380 2700 3780 16000 5110 22.4 21.5 23.5 22 22 22 22 25 50 2160 2160 2160 2160 2450 4910 16000 4460 19.6 18.8 20.5 22 22 22 22 25 60 2030 2030 2030 2030 2310 5550 16000 4120 18.1 17.3 18.9 22 22 22 22 25 71 1910 1910 1910 1910 2170 6170 16000 3790 16.6 16.0 17.4 22 22 22 22 35 35 2230 2230 2230 2230 3540 3540 16000 4660 20.5 19.6 21.4 22 22 22 22 35 50 2030 2030 2030 2030 3240 4620 16000 4120 18.1 17.3 18.9 22 22 22 22 35 60 1920 1920 1920 1920 3060 5250 16000 3820 16.8 16.1 17.5 22 22 22 25 25 25 2500 2500 2500 2830 2830 2830 16000 5480 24.1 23.1 25.2 22 22 22 25 25 35 2330 2330 2330 2650 2650 3710 16000 4970 21.8 20.9 22.8 22 22 22 25 25 50 2120 2120 2120 2410 2410 4820 16000 4350 19.1 18.3 20.0 22 22 22 25 25 60 2000 2000 2000 2270 2270 5450 16000 4020 17.7 16.9 18.5 22 22 22 25 35 35 2190 2190 2190 2470 3480 3480 16000 4540 19.9 19.1 20.8 22 22 22 25 35 50 2000 2000 2000 2270 3180 4550 16000 4020 17.7 16.9 18.5 22 22 22 35 35 35 2060 2060 2060 3270 3270 3270 16000 4180 18.4 17.6 19.2 22 22 25 25 25 25 2440 2440 2780 2780 2780 2780 16000 5320 23.4 22.4 24.4 22 22 25 25 25 35 2280 2280 2600 2600 2600 3640 16000 4830 21.2 20.3 22.2 22 22 25 25 25 50 2080 2080 2370 2370 2370 4730 16000 4250 18.7 17.9 19.5 22 22 25 25 25 60 1970 1970 2230 2230 2230 5360 16000 3930 17.3 16.5 18.0 22 22 25 25 35 35 2150 2150 2440 2440 3410 3410 16000 4430 19.5 18.6 20.3 22 22 25 25 35 50 1970 1970 2230 2230 3130 4470 16000 3930 17.3 16.5 18.0 22 22 25 35 35 35 2020 2020 2300 3220 3220 3220 16000 4080 17.9 17.2 18.7 22 22 35 35 35 35 1910 1910 3040 3040 3040 3040 16000 3790 16.6 16.0 17.4 22 25 25 25 25 25 2390 2720 2720 2720 2720 2720 16000 5160 22.7 21.7 23.7 22 25 25 25 25 35 2240 2550 2550 2550 2550 3560 16000 4700 20.6 19.8 21.6 22 25 25 25 25 50 2040 2330 2330 2330 2330 4640 16000 4150 18.2 17.5 19.1 22 25 25 25 25 60 1930 2200 2200 2200 2200 5270 16000 3850 16.9 16.2 17.7 22 25 25 25 35 35 2100 2400 2400 2400 3350 3350 16000 4320 19.0 18.2 19.8 22 25 25 25 35 50 1930 2200 2200 2200 3080 4390 16000 3850 16.9 16.2 17.7 22 25 25 35 35 35 1990 2260 2260 3160 3160 3160 16000 3990 17.5 16.8 18.3 25 25 25 25 25 25 2660 2660 2660 2660 2660 2660 16000 5020 22.0 21.1 23.0 25 25 25 25 25 35 2500 2500 2500 2500 2500 3500 16000 4580 20.1 19.3 21.0 25 25 25 25 25 50 2280 2280 2280 2280 2280 4570 16000 4050 17.8 17.0 18.6 25 25 25 25 25 60 2160 2160 2160 2160 2160 5190 16000 3760 16.5 15.8 17.3 25 25 25 25 35 35 2350 2350 2350 2350 3290 3290 16000 4210 18.5 17.7 19.3 25 25 25 25 35 50 2160 2160 2160 2160 3030 4320 16000 3760 16.5 15.8 17.3 25 25 25 35 35 35 2220 2220 2220 3110 3110 3110 16000 3900 17.1 16.4 17.9

Capacity of each unit (W

)

rated

capacity

(W)

Outdoor unit

)

input (W

Outdoor unit current (A

230V 240V 220V

)

Total

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit A Unit B Unit C Unit D Unit E Unit F Unit G

22 22 22 22 22 22 22 2280 2280 2280 2280 2280 2280 2280 16000 4830 21.2 20.3 22.2 22 22 22 22 22 22 25 2240 2240 2240 2240 2240 2240 2550 16000 4700 20.6 19.8 21.6 22 22 22 22 22 22 35 2110 2110 2110 2110 2110 2110 3340 16000 4320 19.0 18.2 19.8 22 22 22 22 22 22 50 1930 1930 1930 1930 1930 1930 4400 16000 3850 16.9 16.2 17.7 22 22 22 22 22 25 25 2200 2200 2200 2200 2200 2500 2500 16000 4580 20.1 19.3 21.0 22 22 22 22 22 25 35 2070 2070 2070 2070 2070 2350 3290 16000 4210 18.5 17.7 19.3 22 22 22 22 22 25 50 1900 1900 1900 1900 1900 2160 4320 16000 3760 16.5 15.8 17.3 22 22 22 22 22 35 35 1960 1960 1960 1960 1960 3100 3100 16000 3900 17.1 16.4 17.9 22 22 22 22 25 25 25 2160 2160 2160 2160 2450 2450 2450 16000 4460 19.6 18.8 20.5 22 22 22 22 25 25 35 2030 2030 2030 2030 2310 2310 3240 16000 4120 18.1 17.3 18.9 22 22 22 22 25 35 35 1920 1920 1920 1920 2190 3060 3060 16000 3820 16.8 16.1 17.5 22 22 22 25 25 25 25 2120 2120 2120 2410 2410 2410 2410 16000 4350 19.1 18.3 20.0 22 22 22 25 25 25 35 2000 2000 2000 2270 2270 2270 3180 16000 4020 17.7 16.9 18.5 22 22 25 25 25 25 25 2070 2070 2370 2370 2370 2370 2370 16000 4250 18.7 17.9 19.5 22 22 25 25 25 25 35 1970 1970 2230 2230 2230 2230 3130 16000 3930 17.3 16.5 18.0 22 25 25 25 25 25 25 2050 2320 2320 2320 2320 2320 2320 16000 4150 18.2 17.5 19.1 22 25 25 25 25 25 35 1930 2200 2200 2200 2200 2200 3070 16000 3850 16.9 16.2 17.7 25 25 25 25 25 25 25 2280 2280 2280 2280 2280 2280 2280 16000 4050 17.8 17.0 18.6 25 25 25 25 25 25 35 2160 2160 2160 2160 2160 2160 3030 16000 3760 16.5 15.8 17.3

Number of operated indoor unit

Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H Unit A Unit B Unit C Unit D Unit E Unit F Unit G Unit H

22 22 22 22 22 22 22 22 2000 2000 2000 2000 2000 2000 2000 2000 16000 4020 17.7 16.9 18.5 22 22 22 22 22 22 22 25 1960 1960 1960 1960 1960 1960 1960 2230 16000 3930 17.3 16.5 18.0 22 22 22 22 22 22 25 25 1930 1930 1930 1930 1930 1930 2200 2200 16000 3850 16.9 16.2 17.7 22 22 22 22 22 25 25 25 1900 1900 1900 1900 1900 2160 2160 2160 16000 3760 16.5 15.8 17.3

Capacity of each unit

(W)

rated

capacity

(W)

Total rated

capacity

(W)

Outdoor unit

)

input (W

Outdoor unit

)

input (W

Outdoor unit current

230V 240V 220V

Outdoor unit current

230V 240V 220V

(A)

5-2. CORRECTING COOLING AND HEATING CAPACITY

Rated cooling capacity Rated heating capacity

Indoor D.B. 27°C / W.B. 19°C Outdoor D.B. 35°C

Indoor D.B. 20°C Outdoor D.B. 7°C / W.B. 6°C

–5 0 5 10 15 20 25 30 35 40 46

0.6

0.8

1.2

1.4

Cooling capacity ratio

Outdoor intake air dry-bulb temperature <:D.B. >

–5 0 5 10 15 20 25 30 35 40 46

0.4

0.6

0.8

1.0

1.2

Cooling input ratio

Outdoor intake air dry-bulb temperature <:D.B. >

5-2-1. Correcting Changes in Air Conditions

(1)The performance curve charts (Figure 1-1, 1-2, 2-1, 2-2) show the change ratio of capacity and input (power consumption)

according to the indoor and outdoor temperature condition when define the rated capacity (total capacity) and rated input under the standard condition in standard piping length (5m) as “1.0”.

• Standard conditions:

• Use the rated capacity and rated power values given in the characteristics table for each indoor unit.

• The capacity is the single value on the side of the outdoor unit; The capacity on the sides of each indoor unit must be added to obtain the total capacity.

(2)The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in (1) by the ratio between the

individual capacity at the rated time and the total capacity at the rated time.

Individual capacity under stated conditions =Total capacity under the stated conditions o

(3) Capacity correction factor curve

Fig.1-1 Cooling capacity

Indoor intake air wet-bulb temperature <:W.B.>

Fig.2-1 Heating capacity

Fig.1-2 Cooling input

Fig.2-2 Heating input

Individual capacity at the rated time

Total capacity at the rated time

Indoor intake air wet-bulb temperature <:W.B.>

Indoor intake air dry-bulb temperature <:D.B.>

Outdoor intake air wet-bulb temperature <:W.B.> Outdoor intake air wet-bulb temperature <:W.B.>

Note : These diagrams show the case where the operation frequency of a compressor is fixed.

Indoor intake air dry-bulb temperature <:D.B.>

5-2-2. Correcting Capacity for Changes in the Length of Refrigerant Piping

2.2(15.7%)

7.0 (50%)

10.5 (75%)

14.0 (100%)

18.5 (132%)

0.65 20 40 60 80

20 40 60 80

0.70

0.75

0.80

0.85

0.90

0.95

1.00

0.9 20 40 60 80

0.95

To obtain the ratio (and the corrected piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length from Fig.3, Fig.4 and then multiply by the capacity from Fig.1-1, 1-2, Fig.2-1, 2-2 to obtain the actual capacity.

(1) Capacity correction factor

Fig.3 Cooling capacity correction curve

Total rated capacity of indoor units (kW)

Cooling Capacity (ratio) [%]

Corrected piping length (m)

Fig.4 Heating capacity correction curve

Heating Capacity (ratio) [%]

Corrected piping length (m)

(2) Method for Obtaining the Corrected Piping Length

Corrected piping length = (Actual piping length between outdoor unit and the farthest indoor unit) + (0.30 o number of bends in the

piping) (m)

5-3. NOISE CRITERION CURVES

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

MXZ-8A140VA MXZ-8A140VA

MXZ-8A140VA2 MXZ-8A140VA3

COOLING

MODE

HEATING

SPL(dB)

LINE

MICROPHONE

1.5m

UNIT

GROUND

6 OUTLINES AND DIMENSIONS

Handle for moving

Service panel

Earth terminal

Left····Power supply wiring Right··Indoor/Outdoor wiring

Terminal connection

Rear piping cover

Front piping cover

Side Air Intake

Rear Air Intake

Air Discharge

81 219

14514522030 145

Drain hole (5-[33)

Bottom piping hole (Knockout)

600175 175

330

417

1928

370

4256

2-U Shaped notched holes (Foundation Bolt M10)

2-12 o 36 Oval holes (Foundation Bolt M10)

Installation Feet

, ,

1079

*1 507

*1 423

1350

950

371 635

322

Handle for moving

, ,,

,,,

, ,

Over

Less than

Piping and wiring connections can be made from 4 directions: front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS

2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)

Dimensions of space needed for service access are shown in the below diagram.

The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.

FREE

Over 10mm

Over 150mm

Over 1000mm

FOUNDATION

500

150

Service space

Piping Knockout Hole Details

637323

5527

4045

Power supply wiring hole (2-[27Knockout)

Rear trunking hole (Knockout)

Rear piping hole (Knockout)

[

922723

4075

5519

Power supply wiring hole (2-[27Knockout)

Right trunking hole (Knockout)

Right piping hole (Knockout)

[

637323

5527

40 45

Power supply wiring hole (2-[27Knockout)

Front trunking hole (Knockout)

Front piping hole (Knockout)

[

Handle for moving

Rear Air Intake

Air intake

Side Air Intake

Handle for moving

Example of Notes

1···Refrigerant GAS pipe connection (FLARE)[15.88(5/8 inch) 2···Refrigerant LIQUID pipe connection (FLARE)[9.52(3/8 inch)

Indication of STOP VALVE connection location

6-1. OUTDOOR UNIT unit : mm MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2

MXZ-8A140VA3

Handle for moving

Service panel

Earth terminal

Left····Power supply wiring Right··Indoor/Outdoor wiring

Terminal connection

Rear piping cover

Front piping cover

Side Air Intake

Rear Air Intake

Air Discharge

81 219

14514522030 145

Drain hole (5-[33)

Bottom piping hole (Knockout)

600175 175

330

417

1928

370

4256

2-U Shaped notched holes (Foundation Bolt M10)

2-12 o 36 Oval holes (Foundation Bolt M10)

Installation Feet

,,,

1079

*1 507

*1 423

1350

950

371 635

322

Handle for moving

, ,

Over

Less than

Piping and wiring connections can be made from 4 directions: front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS

2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly with 4 foundation (M10) bolts. (Bolts and washers must be purchased locally.)

Dimensions of space needed for service access are shown in the below diagram.

The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc.

FREE

Over 10mm

Over 150mm

Over 1000mm

FOUNDATION

500

150

Service space

Piping Knockout Hole Details

637323

5527

4045

Power supply wiring hole (2-[27Knockout)

Rear trunking hole (Knockout)

Rear piping hole (Knockout)

[

922723

4075

5519

Power supply wiring hole (2-[27Knockout)

Right trunking hole (Knockout)

Right piping hole (Knockout)

[

637323

5527

40 45

Power supply wiring hole (2-[27Knockout)

Front trunking hole (Knockout)

Front piping hole (Knockout)

[

Handle for moving

Rear Air Intake

Air intake

Side Air Intake

Handle for moving

Example of Notes

1···Refrigerant GAS pipe connection (FLARE)[15.88(5/8 inch) 2···Refrigerant LIQUID pipe connection (FLARE)[9.52(3/8 inch)

Indication of STOP VALVE connection location

unit : mm

6-2. BRANCH BOX UNIT

TB2B

TB3D

TB3E

TB3ATB3B

TB3C

SUSPENSION BOLT : W3/8 (M10) REFRIGERANT PIPE FLARED CONNECTION (inch)

DRAIN HOSE SIZE : O.D. 20 (VP-16)

LIQUID PIPE GAS PIPE

ABCDE

TO OUTDOOR UNIT

1/4 1/4 1/4 1/4 1/4 3/8

1/2 5/8

3/8 3/8 3/8 3/8

SUSPENSION BOLT PITCH

320

402

SUSPENSION BOLT PITCH

95 280

3-ELECTRIC WIRE INLET

3-WIRE BAND

ELECTRIC COVER

TO OUTDOOR UNIT

SERVICE PANEL (for LEV, THERMISTOR)

TERMINAL BLOCK TO INDOOR UNIT

TERMINAL BLOCK TO OUTDOOR UNIT

TO INDOOR UNIT

198

25 25 25 25 25

75 75 75 75

200

[20

DRAIN PIPE CONNECTION (VP-16)

FLEXIBLE DRAIN HOSE (ACCESSORY)

450

SUSPENSION BOLT : W3/8 (M10) REFRIGERANT PIPE FLARED CONNECTION (inch)

DRAIN HOSE SIZE : O.D. 20 (VP-16)

LIQUID PIPE GAS PIPE

ABC

TO OUTDOOR UNIT

1/4 1/4 1/4 3/8

5/8

3/8 3/8 3/8

3-ELECTRIC WIRE INLET

3-WIRE BAND

ELECTRIC COVER

TO OUTDOOR UNIT

SERVICE PANEL (for LEV, THERMISTOR)

TERMINAL BLOCK TO INDOOR UNIT

TERMINAL BLOCK TO OUTDOOR UNIT

TO INDOOR UNIT

DRAIN PIPE CONNECTION (VP-16)

FLEXIBLE DRAIN HOSE (ACCESSORY)

SUSPENSION BOLT PITCH

320

402

TB3C

TB2B

TB3B TB3A

79 50 34

280

703568

205

198

25 25 25

75 75

200

[20

450

PAC-AK50BC

unit : mm

PAC-AK30BC

7 WIRING DIAGRAM

C. B.

MF1

4 5 6 7

CNF1

(WHT)

CN2

(WHT )

CN4

(WHT )

CN3S

(WHT )

CNDM

(WHT )

CN51

(WHT )

CNAC

(WHT)

TH7/6

(RED)

TH3

(WHT)

1 2 1 2

TH4

(WHT)

1 23 4

63HS

(WHT)

1 2 3

63H

(YLW)

3 1

63L

(RED)

3 1

CNIT

(RED)

1 2 3 54

TH7TH6 TH3 TH4 63HS 63H 63L

MF2

4 5 6 7

CNF2

(WHT)

CNDC

(PNK)

CNS

(WHT)

3 1

3 2 1

52C

(BLK)

3 1

21S4

(GRN)

3 1

SV2

(BLU)

3 1

SV1

(GRY)

3 1

(WHT)

3 1

FUSE2

FUSE1

FUSE3

FUSE4

21S4 SV2 SV1

1 2

3 4

7 6 5 4 3 2 1

5 4 3 2 1 3 2 1

3 2 1

2 1

CNAF

(WHT )

CNDC

(PNK)

CN2

(WHT )

CN5

(RED)

7 6 5 4 3 2 1

2 1

CN3

(WHT)

2 1

CN4

(WHT)

2 1

6 5 4 3 2 1

TH8

IGBT

LED1

DCL

TB1

NO FUSE

BREAKER

40 A

BRANCH

BOX

POWER SUPPLY

~/N

220/230/240V 50Hz

220V 60Hz

L N S1 S2 S3

ACTM

52C

SCR-N1

SCR-P1 SCR-R

SCR-P2

SCR-N2

SCR-S

N. F.

P. B.

CNAC2

(RED)

3 1

CNAC1

(WHT)

3 1

L0 N0

CN5

(RED)

2 1

6 5 4 3 2 1

SW5

SW6SW1CN31

SW7SW2

SW8SW4

SW9SW10

7SEG LED

SYMBOL SYMBOL SYMBOLNAME NAME NAME

TB1MCMF1, MF2

21S4

SV1

SV2

63HS

63L

TH3

TH4

TH6

TH7

TH8

DCL

52CRSACTM

P. B

63H

Terminal Block (Power Supply, Branch)

Motor for Compressor

Fan Motors

Solenoid Valve (Four-Way Valve)

Solenoid Valve (Hot Gas Bypass)

Solenoid Valve (Returning oil Bypass )

High pressure Sensor

High pressure Switch

Low pressure Switch

Thermistor (Outdoor Pipe)

Thermistor (Discharge)

Thermistor (Outdoor2 - Phase Pipe)

Thermistor (Outdoor)

Thermistor (Heatsink)

Reactor

52C Relay

Rush Current Protect Resistor

Active Filter Module

Main Smoothing Capacitor

Power Circuit Board

SC - R / S

SC - P1, P2

SC - N1, N2

CN2 ~ 5

CNDC

CNAF

IGBT

LED1

LI / LO

NI / NOEICNAC1 / 2

CN5

FUSE1 ~ 4

SW1

SW2

SW4

Screw Type Terminal (L / N - Phase)

Screw Type Terminal (DC Voltage)

Connector

Converter, Inverter

Light Emitting Diodes (Inverter Control Status)

Noise Filter Circuit Board

Connection Lead (L - Phase)

Connection Lead (N - Phase)

Connection Terminal (Ground)

Connector

Controller Circuit Board

Fuse (6. 3A)

Switch (Forced Defrost, Error History

Record Reset)

Switch (Self Diagnosis Switch)

Switch (Test Operation )

Connection Terminal (U / V / W - Phase)

U / V / W

SW5

Switch (Function Switch)

SW6

SW7

SW8

SW9

SW10

CN31

LED

CNAC

CNDC

CNS

CNF1

CNF2SSSV1

SV2

CN3S

CNDM

CN51

CNIT

Switch (Model Select)

Switch (Function Setup)

Switch

Switch (Function for option)

Connector

Light Emitting Diodes

(Operation Inspection Indicators)

Connector

Connector (Connection for Option)

Connector

Connector (Connection for Option)

Connector <Connected for Option

(Contact Input)>

Connector (Connection for Option)

N. F.

C. B.

Power turned on

Details

●

WARNING: When the main supply is turned off, the voltage [340 V] in the main capacitor will drop to 20 V in approx.2 minutes

(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board gose out, and then wait for at least 1 minute.

● Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.

Do not replace the outdoor board without checking.

Cautions when Servicing

LED on the controller board display the operation and inspection status as follows.

If LED does not light, it indicates that no power is supplied to the board:

Operation / Inspection Display

Normal status

Faulty status

(blinking)

Code

(blinks)

Operation status display,

such as C5. H7

F3F9EA, Eb, EC

E6~E9

E0, E3~E5

EE, EFEdU2U7U1ULU6UFUHUPU3U4U5U8U9

Connector (63H) open, connector (63L) open

At Ieast 2 connectors open

Incorrect wiring in indoor / outdoor unit connection

Indoor / outdoor unit communication error

Remote controller communication error

Combination error, undefined error

Serial communication error

Discharge temperature fault

Low-discharge superheating fault, Erroneous connection of refrigerant pipes or

the connecting wires

High pressure fault (63H operates)

Low pressure fault (63L operates)

Abnormality of power modules

Compressor overcurrent shutoff (Start up locked)

Current sensor fault (P. B.)

Compressor overcurrent shutoff fault

Discharge pipe/compressor thermistor (TH4) open or short-circuit

Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch box

thermistors open or short-circuit

Heatsink temperature fault

Abnormality in outdoor fan motor

Voltage fault, current sensor fault (N. F.)

Forced compressor stop

(Overlap malfunction of drain pump in indoor unit

and linear expansion valve in branch box)

WHT

BLK

BLK BLK

WHT

RED

BLU

RED

YLW ORN

BRN

RED

GRN

/YLW

7-1. OUTDOOR UNIT MXZ-8A140VA

C. B.

MF1

4 5 6 7

CNF1

(WHT)

CN2

(WHT)

CN4

(WHT)

CN3S

(WHT)

CNDM

(WHT)

CN51

(WHT)

CNAC

(WHT)

TH7/6

(RED)

TH3

(WHT)

1 2 1 2

TH4

(WHT)

1 23 4

63HS

(WHT)

1 2 3

63H

(YLW)

3 1

63L

(RED)

3 1

CNIT

(RED)

1 2 3 54

TH7TH6 TH3 TH4 63HS 63H 63L

MF2

4 5 6 7

CNF2

(WHT)

CNDC

(PNK)

CNS

(WHT)

3 1

3 2 1

52C

(BLK)

3 1

21S4

(GRN)

3 1

SV2

(BLU)

3 1

SV1

(GRY)

3 1

(WHT)

3 1

FUSE2

FUSE1

FUSE3

FUSE4

21S4

SV2 SV1

1 2

3 4

7 6 5 4 3 2 1

5 4 3 2 1 3 2 1

3 2 1

2 1

CNAF

(WHT)

CNDC

(PNK)

CN2

(WHT)

CN5

(RED)

7 6 5 4 3 2 1

2 1

CN3

(WHT)

2 1

CN4

(WHT)

2 1

6 5 4 3 2 1

TH8

IPM

LED1

WHT

BLK BLK

ACTMRS

RED

WHT

BLK

RED

TABP1

TABP2

TABN1

TABN2

TABN TABP

TABS

TABT

BLU

WHT

DCL

TB1

NO FUSE

BREAKER

40 A

BRANCH

BOX

POWER SUPPLY

~/N

220/230/240V 50Hz

220V 60Hz

L N S1 S2 S3

52C

N. F.

P. B.

CNAC2

(RED)

3 1

CNAC1

(WHT)

3 1

L0 N0

CN5

(RED)

2 1

6 5 4 3 2 1

SW5

SW6SW1CN31

SW7SW2

SW8SW4

SW9SW10

7SEG LED

SYMBOL SYMBOL SYMBOLNAME NAME NAME

TB1MCMF1, MF2

21S4

SV1

SV2

63HS

63L

TH3

TH4

TH6

TH7

TH8

DCL

52CRSACTM

P. B

63H

Terminal Block (Power Supply, Branch)

Motor for Compressor

Fan Motors

Solenoid Valve (Four-Way Valve)

Solenoid Valve (Hot Gas Bypass)

Solenoid Valve (Returning oil Bypass)

High pressure Sensor

High pressure Switch

Low pressure Switch

Thermistor (Outdoor Pipe)

Thermistor (Discharge)

Thermistor (Outdoor2 - Phase Pipe)

Thermistor (Outdoor)

Thermistor (Heatsink)

Reactor

52C Relay

Rush Current Protect Resistor

Active Filter Module

Main Smoothing Capacitor

Power Circuit Board

TAB - S / T

TAB-P/P1/P2

TAB-N/N1/N2

CN2 ~ 5

CNDC

CNAF

IPM

LED1

LI / LO

NI / NOEICNAC1 / 2

CN5

FUSE1 ~ 4

SW1

SW2

SW4

Terminal (L / N - Phase)

Terminal (DC Voltage)

Connector

Inverter

Light Emitting Diodes (Inverter Control Status)

Noise Filter Circuit Board

Connection Lead (L - Phase)

Connection Lead (N - Phase)

Connection Terminal (Ground)

Connector

Controller Circuit Board

Fuse (6.3A)

Switch (Forced Defrost, Error History

Record Reset)

Switch (Self Diagnosis Switch)

Switch (Test Operation )

Connection Terminal (U / V / W - Phase)

U / V / W

SW5

Switch (Function Switch)

SW6

SW7

SW8

SW9

SW10

CN31

LED

CNAC

CNDC

CNS

CNF1

CNF2SSSV1

SV2

CN3S

CNDM

CN51

CNIT

Switch (Model Select)

Switch (Function Setup)

Switch

Switch (Function for option)

Connector

Light Emitting Diodes

(Operation Inspection Indicators)

Connector

Connector (Connection for Option)

Connector

Connector (Connection for Option)

Connector <Connected for Option

(Contact Input)>

Connector (Connection for Option)

N. F.

C. B.

Power turned on

Details

WARNING: When the main supply is turned off, the voltage[340 V]in the main capacitor will drop to 20 V in approx.2 minutes

(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board gose out, and then wait for at least 1 minute.

Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.

Do not replace the outdoor board without checking.

Cautions when Servicing

LED on the controller board display the operation and inspection status as follows.

If LED does not light, it indicates that no power is supplied to the board:

Operation / Inspection Display

Normal status

Faulty status

(blinking)

Code

(blinks)

Operation status display,

such as C5. H7

F3F5F9E8E9EAEbEcE0 E7

EE, EFEdU2U7U1ULU6UFUHUPU3U4U5U8U9

63L connector (red) is open.

63H connector (yellow) is open.

2 connectors (63H/63L) are open.

Branch box/outdoor communication error (Signal receiving error) (Outdoor unit)

Indoor/branch box communication error (Signal receiving error) (Branch box)

Branch box/outdoor communication error (Transmitting error) (Outdoor unit)

Indoor/branch box communication error (Transmitting error) (Branch box)

Miswiring of indoor-branch box / branch box-outdoor unit connecting wire.

Too many indoor units / branch box are in the system.

Miswiring of indoor-branch box/branch box-outdoor unit connecting wire (converse wiring or disconnection)

Startup time over

Communication error except for outdoor unit

Combination error, undefined error

Serial communication error

Discharge temperature fault

Low-discharge superheating fault, Erroneous connection of refrigerant pipes or

the connecting wires

High pressure fault (63H operates)

Low pressure fault (63L operates)

Abnormality of power modules

Compressor overcurrent shutoff (Start up locked)

Current sensor fault (P. B.)

Compressor overcurrent shutoff fault

Discharge pipe/compressor thermistor (TH4) open or short-circuit

Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch box

thermistors open or short-circuit

Heatsink temperature fault

Abnormality in outdoor fan motor

Voltage fault, current sensor fault (N. F.)

Forced compressor stop

(Overlap malfunction of drain pump in indoor unit

and linear expansion valve in branch box)

MXZ-8A140VA1 MXZ-8A140VA2

MXZ-8A140VA3

Power turned on

LED on the controller board display the operation and inspection status as follows.

If LED does not light, it indicates that no power is supplied to the board:

Operation / Inspection Display

Normal status

Faulty status

(blinking)

Details

• WARNING:When the main supply is turned off, the voltage[340 V]in the main capacitor will drop to 20 V in approx.2 minutes

(input voltage : 240 V). When servicing, make sure that LED on the outdoor circuit board goes out, and then wait for at least

1 minute.

• Components other than the outdoor board may be faulty : Check and take corrective action, referring to the service manual.

Do not replace the outdoor board without checking.

Cautions when Servicing

Code

(blinks)

Operation status display,

such as C5. H7

F3F5F9E8E9

EAEbEc

E0 - E7

EE, EFEdU2U7U1ULU6UFUHUPU3U4U5U8U9

63L connector (red) is open.

63H connector (yellow) is open.

2 connectors (63H/63L) are open.

Branch box/outdoor communication error (Signal receiving error)(Outdoor unit)

Indoor/branch box communication error (Signal receiving error)(Branch box)

Branch box/outdoor communication error (Transmitting error)(Outdoor unit)

Indoor/branch box communication error (Transmitting error)(Branch box)

· Miswiring of indoor-branch box / branch box-outdoor unit connecting wire.

· Too many indoor units / branch box are in the system.

Miswiring of indoor-branch box/branch box-outdoor unit connecting wire (converse wiring or disconnection)

Startup time over

Communication error except for outdoor unit

Combination errer, undefined error

Serial communication error

Discharge temperature fault

Low-discharge superheating fault, Erroneous connection of refrigerant pipes or

the connecting wires

High pressure fault (63H operates)

Low pressure fault (63L operates)

Abnormality of power modules

Compressor over current shutoff (Start up locked)

Current sensor fault (P. B.)

Compressor overcurrent shutoff fault

Discharge pipe/compressor thermistor (TH4) open or short-circuit

Outdoor unit thermistors (TH3, TH6, TH7, and TH8), 63HS, and branch dox

thermistors open or short-circuit

Heatsink temperature fault

Abnormality in outdoor fan motor

Voltage fault, current sensor fault (N. F.)

Forced compressor stop

(Overlap malfunction of drain pump in indoor unit

and linear expansion valve in branch box)

SYMBOL SYMBOL SYMBOLNAME NAME NAME

TB1MCMF1, MF2

21S4

SV1,SV2

63HS

63L

TH3

TH4

TH6

TH7

TH8

DCL

52C

ACTM

P. B.

63H

Terminal Block

(Power Supply, Branch Box)

Motor for Compressor

Fan Motors

Solenoid Valve (Four-Way Valve)

Solenoid Valve (Bypass Valve )

High Pressure Sensor

High Pressure Switch

Low Pressure Switch

Thermistor(Outdoor Pipe)

Thermistor(Discharge)

Thermistor(Outdoor 2 - Phase Pipe)

Thermistor(Outdoor)

Thermistor(Radiator Panel)

Reactor

52C Relay

Active Filter Module

Main Smoothing Capacitor

Power Circuit Board

TABS / T

TABP1/P2/P

TABN1/N2/N

DS2, DS3

IPM

LI / LO

NI / NO

EI, E2

X51

X55

SW1

SW2

SW4

Connection Terminal (L / N - Phase)

Connection Terminal (DC Voltage)

Diode Bridge

Power Module

Noise Filter Circuit Board

Connection Terminal (L - Phase)

Connection Terminal (N - Phase)

Connection Terminal (Ground)

Controller Circuit Board

Fuse (T6.3AL250V)

Relay

Switch (Forced Defrost, Defect History

Record Reset)

Switch (Self Diagnosis Switch)

Switch (Test Operation )

Connection Terminal(U / V / W - Phase)

TABU / V / W

SW5

Switch (Function Switch)

SW6

SW7

SW8

SW9SSCN3S

CNIT

Switch (Model Select)

Switch (Function Setup)

CN31 Connector

LED

Light Emitting Diode

(Operation Inspection Indicators)

Connector(Connection for Option)

CNDM

Connector<Connected for Option

(Contact Input)>

CN51

Connector(Connection for Option)

N. F.

C. B.

MODEL

MXZ-8A140VA

SW6

OFF

12345678

MF1

CNF1

(WHT)

TRANS

MF2

CNF2

(WHT)

CNDC

(PNK)

11221

TH7/6

(RED)

TH3

(WHT)

TH4

(WHT)

TH7

TH6 TH3 TH4

3 1

63HS

(WHT)

63L

(RED)

63L

63H

(YLW)

63H

CNS

(WHT)

CN2

(WHT)

1313

CNAC

(WHT)

CN4

(WHT)

21S4

(GRN)

SV2

(BLU)

X52

X55

21S4 SV2

SV1

(GRY)

X54

SV1

(WHT)

X51

114

CNM

(WHT)

LED1

CN52C

(RED)

CNIT

(RED)

CN51

(WHT)

CNDM

(WHT)

3 CN3S

(WHT)

SW8 SW5

SW1

CN31

SW6

SW9SW2 SW7

SW4

P. B.

12121

TABN

TABP

CN2

(WHT)

CNAF

(WHT)

CN4

(WHT)

CN5

(RED)

CN3

(WHT)

TH8

WHT

RED

C. B.

N. F.

BLU

S1NL

S2 S3

YLW

ORN

GRN / YLW

BRN

RED

TB1

NO FUSE

BREAKER

40 A

BRANCH BOX

POWER SUPPLY

~/N

220/230/240V 50Hz

220V 60Hz

DCL

ACTM

L1 L2

N2IoN1

RED

BLK

RED

WHT

IPM

TABV

TABW

TABN1

BLK

TABN2

TABU

TABP2

RED

WHT

BLK

CNDC

(PNK)

DS2

DS3

TABS

TABP1

TABT

RED

BLU

WHT

52C

CN5

(RED)

CNAC2

(RED)

CNAC1

(WHT)

CN52C

(BLK)

BLU

7-2. BRANCH BOX : PAC-AK50BC PAC-AK30BC

5 3 1

YLW

TB3E

(PAC - AK50BC only)

WSetup of SW1 Make it the same setup as former one when exchanging PCB.

TO INDOOR UNIT -E

(PAC - AK50BC only)

(

PAC - AK50BC only

)

TO INDOOR UNIT -D

TO INDOOR UNIT -C

TO INDOOR UNIT -B

TO INDOOR UNIT -A

TO OUTDOOR UNIT

ORN BRN

TB3E

(GRN)

5 3 1

YLW ORN BRN

TB3D

(BLK)

5 3 1

YLW ORN BRN

TB3C

(BLU)

5 3 1

YLW ORN BRN

TB3B

(RED)

LEV-A

(WHT)

5 3 1

1 2

1 6

YLW ORN BRN

TB3A

(WHT)

1 3

YLW

TB1

ORN BRN

CN3C

(BLU)

3 1

CND

(ORN)

1 2 3 4 5 6 7 8 9

1011 1213 14

CNM

SW1 W

LED1 LED2 LED3 LED4 LED5

1 2

LEV-A

LEV-B

(RED)

1 6

LEV-B

LEV-C

(BLU)

1 6

LEV-C

LEV-D

(BLK)

1 6

LEV-D

LEV-E

(GRN)

TH-A

(WHT)

TH-B

(RED)

TH-C

(BLU)

TH-D

(BLK)

TH-E

(GRN)

1 6

LEV-E

TH-A

TH-B

TH-C

TH-D

TH-E

S1 S2 S3

TB3D

S1 S2 S3

TB3C

S1 S2 S3

TB3B

S1 S2 S3

TB3A

S1 S2 S3

TB2B

S1 S2 S3

Note : " PAC - AK30 . 50BC " is only for R410A.

Note

1. At servicing for outdoor unit, always follow the wiring diagram of Outdoor unit.

2. Symbols used in wiring diagram above are, : terminal block, : connector. (Combination of indoor units)

Fill out the location of combined indoor units with model name in each blank below because it is necessary for service and maintenance.

SYMBOL B.C F1

B.C

SW1<B.C

CNM<B.C

LED1~5< B.C>

TB3A TB3B TB3C TB3D TB3E

LEV-A~E TH-A~E

TB2B

Branch box controller board Fuse 250V 6.3A Switch for service Connector Light emitting diode

Terminal block / To indoor unit - A Terminal block / To indoor unit - B Terminal block / To indoor unit - C Terminal block / To indoor unit - D Terminal block / To indoor unit - E

Linear expansion valve Thermistor

Pipe temp.detection / Gas

(

0 : / 15k', 25 : / 5.4k'

)

Terminal block / To outdoor unit

NAME

Indoor unit - A Indoor unit - B Indoor unit - C Indoor unit - D Indoor unit - E

B.C

(PAC - AK50BC only)

ON OFF

BB BBB

Branch box

BBB

2 branches pipe (joint) : optional parts

Branch box #1

Branch box #2

Thermistor TH6 (Pipe temperature : condenser)

Thermistor TH7 (Outdoor temperature)

Thermistor TH3 (Pipe temperature : liquid)

Strainer #100

Oil separator

Low pressure switch 63L

High pressure switch 63H

Compressor

Thermistor TH4 (Discharge temperature)

Thermistor TH8 (Fin temperature)

Strainer #100

Strainer #50

Check valve (High Pressure)

Check valve (Low Pressure)

Capillary tube3

Capillary tube4

Capillary tube2

Capillary tube1

E D C B A

Strainer #100

Condenser / evaporator temperature thermistor (TH5 or RT12)

Pipe temperature thermistor / liquid (TH2 or RT13)

Strainer #100

Indoor units Branch box Outdoor unit

Thermistor (TH-A~E) (Gas pipe temperature)

LEV A~E

(Linear expansion valve)

Room temperature thermistor (TH1 or RT11)

Service port

Ball valve

Stop valve

Bypass valve(SV2)

Bypass valve (SV1)

High pressure sensor discharge pressure sensor 63HS

Accumulator

4-way valve

Distributor with Strainer

Refrigerant flow in cooling Refrigerant flow in heating

Outdoor unit

MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2 MXZ-8A140VA3

PAC-AK50BC PAC-AK30BC

Branch box

Capillary tube 1 (For return of oil from oil separator)

Capillary tube 2 (For SV2)

Capillary tube 3 ahead of LEV (in cooling mode)

Capillary tube 4 behind LEV (in cooling mode)

[2.5 o [0.8 o L1000

[4 o [2.4 o L250

([4 o [2.4 o L140) o 5([4 o [2.2 o L130) o 5 ([4 o [2.4 o L140) o 3([4 o [2.2 o L130) o 3

unit : mm

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

REFRIGERANT SYSTEM DIAGRAM

Piping connection size

Liquid (mm)

Gas (mm)

■ In case of using 1-branch box Flare connection employed (No. brazing)

■ In case of using 2-branch boxes

{15.88

{9.52

The pipe connection size differs according to the type and capacity of indoor units. Match the piping connection size of branch box with indoor unit. If the piping connection size of branch box does not match the piping connection size of indoor unit, use optional different-diameter (deformed) joints to the branch box side. (Connect deformed joint directly to the branch box side.)

■ installation procedure (2 branch pipe (joint)) Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.

■ Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit

Indoor unit type

Pipe size (mm)

(kW)

Liquid

Gas

[6.35 [12.7

[9.52

[15.88

[9.52

[15.88

For liquid For gas

[9.52mm

[15.88mm

A UNIT

B UNIT

C UNIT

D UNIT

E UNIT

Liquid pipe Gas pipe

[6.35 mm [9.52 mm

[6.35 mm [9.52 mm [6.35 mm

[9.52 mm [6.35 mm [9.52 mm [6.35 mm [12.7 mm

w 3- branch type is only for A, B, and C unit.

[6.35mm [9.52mm

[12.7mm [15.88mm [19.05mm

Conversion formula

1/4 inch 3/8 inch 1/2 inch 5/8 inch 3/4 inch

(1) Valve size for outdoor unit

(2) Valve size for branch unit

Different-diameter joint (optional parts) (Fig.7-1)

Fig.7-1

MAC-A454JP MAC-A455JP MAC-A456JP PAC-493PI PAC-SG76RJ-E

{9.52 ➝ {12.7 {12.7 ➝ {9.52 {12.7 ➝ {15.88 {6.35 ➝ {9.52 {9.52 ➝ {15.88

{9.52 {12.7 {12.7 {6.35 {9.52

{12.7 {9.52

{15.88

{9.52

{15.88

Connected pipes diameter

Diameter AmmDiameter B

Model name

Indoor unit type

Pipe size (mm)

When using 60 type indoor unit of MEXZ series, use the flare nut in the indoor unit accessory for the gas side connecting of indoor unit. Do not use the flare nut (gas side) attached to the indoor unit. If it is used, a gas leakage or even a pipe extraction may occur.

■ Pipe size (Branch box-Indoor unit) *Case of P series Indoor unit

When using 35, 50 type indoor unit of P series, use the flare nut (for R410A) attached to the indoor unit. Do not use the flare nut (for R407C) in the indoor unit accessory. If it is used, a gas leakage or even a pipe extraction may occur.

(kW)

Liquid

Gas

[6.35 [9.52

[6.35 [12.7

[6.35

[15.88 w

[9.52

[15.88

[9.52

[15.88

9 TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The trouble has recurred.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “9-3. SELF-DIAGNOSIS ACTION TABLE”.

Conduct trouble shooting and ascertain the cause of the trouble according to “9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA”.

The trouble is not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring and etc. 2Reset error code logs and restart the unit after finishing service. 3There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

1Re-check the abnormal symptom. 2Conduct trouble shooting and ascertain the cause of the

trouble

according to “9-4. TROUBLESHOOTING

BY INFERIOR PHENOMENA

”. 3Continue to operate unit for the time being if the cause is not ascertained. 4There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

9-1. TROUBLESHOOTING

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

9-2. CHECK POINTS FOR TEST RUN

9-2-1. Before test run

● Turn on the main power switch more than 12 hours before starting operation.Starting operation just after turning on the power switch can severely damage the internal parts. Keep the main power switch turned on during the operation season.

● After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.

● Use a 500-volt M-ohm tester to check that the resistance between the power supply terminals and ground is at least 1 M".

● Do not carry out this test on the control wiring (low voltage circuit) terminals.

Warning: Do not use the air conditioner if the insulation resistance is less than 1 M"".

Insulation resistance

After installation or after the power source to the unit has been cut for an extended period, the insulation resistance will drop below 1 M" due to refrigerant accumulating in the compressor. This is not a malfunction. Perform the following procedures.

1.Remove the wires from the compressor and measure the insulation resistance of the compressor.

2.If the insulation resistance is below 1 M", the compressor is faulty or the resistance dropped due to the accumulation of refrigerant in the compressor.

3.After connecting the wires to the compressor, the compressor will start to warm up after power is supplied. After supplying power for the times indicated below, measure the insulation resistance again.

• The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise above 1M"

after the compressor is warmed up for 4 hours. (The time necessary to warm up the compressor varies according to atmospheric conditions and refrigerant accumulation.)

• To operate the compressor with refrigerant accumulated in the compressor, the compressor must be warmed up at least

12 hours to prevent breakdown.

4. If the insulation resistance rises above 1 M", the compressor is not faulty.

Caution:

• The compressor will not operate unless the power supply phase connection is correct.

• Turn on the power at least 12 hours before starting operation.

Staring operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.

● The followings must be checked as well.

• The outdoor unit is not faulty. LED on the control board of the outdoor unit flashes when the outdoor unit is faulty.

• Both the gas and liquid stop valves are completely open.

9-2-2. Test run

(1) Using remote controller

Refer to the indoor unit installation manual.

• Be sure to perform the test run for each indoor unit. Make sure each indoor unit operates properly following the installation

manual attached to the unit.

• If you perform the test run for all indoor units at once, you cannot detect any erroneous connection, if any, of the refrigerant

pipes and the connecting wires.

* The compressor operation is not available for 3 minutes at least after the power is supplied.

• The compressor can emit noise just after turn on the power supply or in case of low outside air temperature.

About the restart protective mechanism

Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner.

SW4

A Stop B Cooling C Operation D Heating

(Initial setting)

(2) Using SW4 in outdoor unit

In case of the test run from outdoor unit, all indoor units operate. Therefore, you cannot detect any erroneous connection of refrigerant pipes and the connecting wires. If it aims at detection of any erroneous connection, be sure to carry out the test run from remote controller with reference to "(1) Using remote controller."

SW4-1 SW4-2 SW4-1 SW4-2

w After performing the test run, set SW4-1 to OFF.

• Afew seconds after the compressor starts, a clanging noise may be heard from the inside of the outdoor unit. The noise is coming from the check valve due to the small difference in pressure in the pipes. The unit is not faulty.

The test run operation mode cannot be changed by DIP switch SW4-2 during the test run. To change the test run operation mode during the test run, stop the test run by DIP switch SW4-1. After changing the test run operation mode, resume the test run by switch SW4-1.

ON OFF ON ON

Cooling operation

Heating operation

When a test run is started by “Using SW4 in outdoor unit”, even if it carries out stop instructions by remote controller, outdoor unit does not stop. A test run is not ended. In this case, please set SW4 in outdoor unit to off.

• After power is supplied or after an operation stop for a while, a small clicking noise may be heard from the inside of the branch box. The electronic expansion valve is opening and closing. The unit is not faulty.

NOTE:Be sure to wait at least 3 minutes after turning on the power supply before setting SW4-1and SW4-2.

If the DIP switches are set before 3 minutes has elapsed, the test run may not start.

9-2-3. Test run by outdoor unit SW4

The setting of test run (ON/OFF) and its operation mode (cooling/heating) can be set by SW4 on the controller board of outdoor unit.

1Set operation mode(cooling or heating) by SW4-2. 2Start test run by setting SW4-1 to ON ( ) with the indicated operation mode of SW4-2. 3Finish test run by setting SW4-1 to OFF ( ).

• Operation mode cannot be changed by SW4-2 during test run. Stop test run to change operation mode by SW4-1, and restart test run by SW4-1 after

the mode is changed.

• Test run automatically stops 2 hours later by 2-hour OFF timer function.

• Test run can be performed by the remote controller.

• The remote controller display of test run by outdoor unit is the same as that of test run by

remote controller.

• If test run is set with the outdoor unit, the test run is performed for all indoor units.

• The remote controller operation becomes unavailable once the test run is set with the outdoor unit.

During the test run set with the outdoor unit, operation on/off or operation mode change cannot be performed by the remote controller, and the operation relating to the test run which is made with the outdoor unit will be prior to any other commands from the remote controller. Set the SW4-1 to OFF ( ) to finish test run. Emergency operation is not available for this model.

9-3. SELF-DIAGNOSIS ACTION TABLE

Error Code

None —

Abnormal point and detection method

1 No voltage is supplied to termi-

2 Electric power is not charged

3 Electric power is not supplied

(Note 1) Refer to indoor unit section for code P and code E.

Case

nal block(TB1) of outdoor unit.

a) Power supply breaker is

turned off.

b) Contact failure or discon-

nection of power supply terminal

c) Open phase (L or N phase)

to power supply terminal of outdoor power circuit board.

a) Contact failure of power

supply terminal

b) Open phase on the outdoor

power circuit board

Disconnection of connector

SC-R or SC-S

to outdoor controller circuit board.

a) Disconnection of connector

(CNDC)

1 Check following items.

a) Power supply breaker b) Connection of power supply terminal

c) Connection of power supply terminal

2 Check following items.

a) Connection of power supply terminal

b) Connection of terminal on outdoor power

3 Check connection of the connector (CNDC)

on the outdoor controller circuit board. Check connection of the connector, CNDC on the outdoor power circuit board. Refer to 9-7.

Judgment and action

block. (TB1)

circuit board. Disconnection of connector SC-R or SC-S Refer to 9-7.

(5202)

(5201)

63L connector open

Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply 63L: Low-pressure switch

63H connector open

Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply 63H: High-pressure switch

4 Disconnection of reactor (DCL)

5 Disconnection of outdoor noise

filter circuit board or parts failure in outdoor noise filter circuit board

6 Defective outdoor power circuit

board

7 Defective outdoor controller

circuit board

1 Disconnection or contact failure

of 63L connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63L

3 63L is working due to refriger-

ant leakage or defective parts.

4 Defective outdoor controller

circuit board

1 Disconnection or contact failure

of 63H connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63H

3 63H is working due to defective

parts.

4 Defective outdoor controller

circuit board

4 Check connection of reactor. (DCL)

Check connection of “L1” and “L2” on the active filter module.(ACTM)

5 a) Check connection of outdoor noise filter

circuit board.

b) Replace outdoor noise filter circuit board.

Refer to 9-7.

6 Replace outdoor power circuit board. 7 Replace controller board (When items above

are checked but the units cannot be repaired.)

1 Check connection of 63L connector on

outdoor controller circuit board. Refer to 9-7.

2 Check the 63L side of connecting wire. 3 Check refrigerant pressure.

Charge additional refrigerant. Check continuity by tester. Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board. 1 Check connection of 63H connector on

outdoor controller circuit board. Refer to 9-7.

2 Check the 63H side of connecting wire. 3 Check continuity by tester.

Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

2 connector open

Abnormal if both 63H and 63L connector circuits are open for 3 minutes continuously after power supply

(4119)

63H: High-pressure switch 63L: Low-pressure switch

1 Disconnection or contact failure

of connector (63H,63L) on outdoor controller circuit board.

2 Disconnection or contact failure

of 63H, 63L

3 63H and 63L are working due

to defective parts.

4 Defective outdoor controller

board

1 Check connection of connector(63H,63L) on

outdoor controller circuit board. Refer to 9-7.

2 Check the 63H and 63L side of connecting

wire.

3 Check continuity by tester.

Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

Error Code

(6844)

(6845)

Abnormal point and detection method Judgment and action

Indoor–branch box/branch box–outdoor unit connector miswiring, excessive number of units

1. Outdoor/branch box controller circuit board can automatically check the number of connected indoor units. Abnormal if the number cannot be checked automatically due to miswiring of indoor– branch box/branch box–outdoor unit connecting wire and etc. after power is turned on for 4 minutes.

Miswiring of indoor–branch box/branch box–outdoor unit connecting wire (converse wiring or disconnection)

Outdoor/branch box controller circuit board can automatically set the unit number of indoor units. Abnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor–branch box/branch box–outdoor unit connecting wire.

1 Contact failure or miswiring of

indoor/outdoor unit connecting wire

2 Diameter or length of indoor–

branch box/branch box–outdoor unit connecting wire is out of specified capacity. There are 9 or more indoor units in the system. There are 3 or more branch boxes in the system.

3 Defective transmitting receiving

circuit of outdoor/branch box controller circuit board

4 Defective transmitting receiving

circuit of branch box/indoor controller board

5 Defective branch box/indoor

power board

6 Noise has entered into power

supply or indoor–branch box /branch box–outdoor unit connecting wire.

1 Contact failure or miswiring of

indoor–branch box/branch box –outdoor unit connecting wire

2 Diameter or length of indoor–

branch box/branch box–outdoor unit connecting wire is out of specified capacity.

4 Defective transmitting receiving

circuit of outdoor/branch box controller circuit board

5 Defective transmitting receiving

circuit of indoor/branch box controller board

6 Defective indoor/branch box

power board

7 Noise has entered into power

supply or indoor–branch box/branch box–outdoor unit connecting wire.

Case

1 Check disconnection or looseness or polarity

of indoor–branch box/branch box–outdoor unit connecting wire of indoor and outdoor units.

2 Check diameter and length of indoor–branch

box/branch box–outdoor unit connecting wire. Total wiring length: 55m (outdoor–branch box) (including wiring connecting each branch box unit and between branch box and outdoor unit) Also check if the connection order of flat cable is S1, S2, S3.

If the error “EA” is detected, check the number of the indoor units and the branch box in the system.

3~5 Turn the power off once, and on again to

check. Replace outdoor controller circuit board, branch box controller board, indoor controller board or indoor power board if abnormality occurs again.

6 Check transmission path, and remove the

cause.

w The descriptions above, 1-6, are for EA, Eb

and EC.

Start-up time over

The unit cannot finish start-up process within 4 minutes after power on.

(6846)

1 Contact failure of indoor–

branch box/branch box–outdoor unit connecting wire

2 Diameter or length of indoor–

branch box/branch box–outdoor unit connecting wire is out of specified capacity.

3 Noise has entered into power

supply or indoor–branch box/branch box–outdoor unit connecting wire.

Error Code

(1302)

Abnormal point and detection method Judgment and action

(1) High-pressure switch (63H) worked

Abnormal if high-pressure switch 63H worked ( w ) during compressor operation. w 4.15 MPa

63H: High-pressure switch

(2) High pressure

(High - pressure sensor 63HS detect)

1 When high-pressure pressure sensor

detects 4.31MPa or more (or over

4.15MPa for 3 minutes) (1st detection) during the compressor operation, the compressor stops and restarts operation in 3 minutes.

2 When the sensor detects 4.31MPa or

more (or over 4.15MPa for 3 minutes) again (2nd detection) within 30 minutes since the compressor has stopped, the compressor stops again and restarts operation in 3 minutes.

3 When the sensor detects 4.31MPa or

more (or over 4.15MPa for 3 minutes) again (3rd detection) within 30 minutes since the compressor has stopped, the compressor stops again and restarts operation in 3 minutes.

4 When the sensor detects 4.31MPa or

more (or over 4.15MPa for 3 minutes) again (4th detection) within 30 minutes after 3rd compressor stop, it stops abnormally. In this time <U1> is displayed.

5 When the sensor detects 4.31MPa or

more (or over 4.15MPa for 3 minutes) after 30 minutes since the compressor has stopped (1st or 2nd or 3rd time), it becomes the 1st detection or the same performance as above-mentioned 1.

6 It is being delay for abnormal stop dur-

ing 30 minutes since the compressor has stopped. In this time, check delay code <U1> will be displayed.

Case

1) Short cycle of indoor unit

2) Clogged filter of indoor unit

3) Decreased airflow caused by dirt of indoor fan

4) Dirt of indoor heat exchanger

5) Locked indoor fan motor

6) Malfunction of indoor fan motor

7) Defective operation of stop valve (Not fully opened)

8) Clogged or broken pipe

9) Locked outdoor fan motor

10) Malfunction of outdoor fan

motor

11) Short cycle of outdoor unit

12) Dirt of outdoor heat exchang-

13) Decreased airflow caused by

defective inspection of out side temperature thermistor (It detects lower temperature than actual temperature.)

14) Disconnection or contact fail-

ure of connector (63H) on outdoor controller board

15) Disconnection or contact fail-

ure of 63H connection

16) Defective outdoor controller

board

17) Defective action of linear

expansion valve

18) Malfunction of fan driving cir-

cuit

19) Solenoid valve (SV1) perfor-

mance failure (High-pressure pressure cannot be controlled by SV1)

20) High-pressure pressure sen-

sor defective

21) High-pressure pressure sen-

sor input circuit defective in multi controller board

1)~6) Check indoor unit and repair defect.

7) Check if stop valve is fully open.

8) Check piping and repair defectives.

9)~12) Check outdoor unit and repair defect.

13) Check the detected temperature of outside temperature thermistor on LED display.

14)~16) Put the power off and check F5 is

displayed when the power is put again. When F5 is displayed, refer to “Judgment and action” for F5.

17) Check linear expansion valve. Refer to 9-6.

18) Replace outdoor controller board.

19) Check the solenoid valve performance.

20) Check the high-pressure pressure sensor.

21) Check the high-pressure pressure sensor.

Error Code

Abnormal point and detection method Judgment and action

(1) High discharging temperature

Abnormal if discharge temperature thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes. Abnormal if pressure detected by high pressure sensor and converted to saturation temperature exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.

1 Overheated compressor opera-

tion caused by shortage of refrigerant

2 Defective operation of stop

valve

3 Defective thermistor 4 Defective outdoor controller

board

5 Defective action of linear

expansion valve

Case

1 Check intake superheat.

Check leakage of refrigerant. Charge additional refrigerant.

2 Check if stop valve is fully open. 34 Turn the power off and check if U3 is dis-

played when the power is turned on again. When U3 is displayed, refer to “Judgement and action” for U3.

5 Check linear expansion valve.

Refer to 9-6.

(1102)

(2) Refrigerant shortage abnormality

1 When the conditions of below detecting

mode 1 or 2 are satisfied (1st detec- tion) during the compressor operation, the compressor stops and restarts operation in 3 minutes. <Detecting mode 1> When the below conditions are satisfied completely.

1. Compressor is operating in HEAT mode.

2. Discharge superheat is 70; or more.

3. Difference of outer temperature thermistor (TH7) and outdoor piping temp. thermistor (TH3) applies to the formula of (TH7-TH3)<5;.

4. High-pressure pressure sensor is below about 2.04MPa.

<Detecting mode 2> When the below conditions are satisfied completely.

1. Compressor is operating.

2. When cooling, discharge superheat

is 80; or more. When heating, discharge superheat is 90; or more. High pressure sensor is below about

2.32MPa.

2 When the conditions of detecting mode

1and 2 are satisfied again (2nd detection) within 30 minutes since the compressor has stopped, it stops abnormally. In this time, <U2> is displayed.

3 When the conditions of detecting

mode1and 2are satisfied again after 30 minutes since the compressor has stopped (1st time), it becomes the 1st detection and same performance as above 1.

4 It is being delay for abnormal stop dur-

ing 30 minutes since the compressor has stopped. In this time, check delay code <U2> will be displayed.

1 Gas leakage, Gas shortage 2 When heating operation, scant

refrigerant operation (When heating, airflow or thermo OFF are mixed-operation, it cause a refrigerant shortage operation.)

3 Ball valve performance failure

(Not fully opened.)

4 Error detection of discharge

super heat

1) High-pressure pressure sensor defective

2) Discharge temperature thermistor defective

3) Thermistor input circuit defective and high-pressure pressure sensor defective in multi controller board

5 Error detection of TH7/TH3

1) Thermistor defective

2) Thermistor input circuit

defective in multi controller board

1 Check the refrigerant amount. 2 Check the operation condition and refrigerant

amount.

3 Check the ball valve is fully opened. 4 1) Check the ball valve is fully opened.

2) Check the resistance of discharge temperature thermistor.

3) According to “Monitoring function for outdoor unit”, set the SW2 and check the high-pressure pressure sensor level.

According to “Monitoring function for outdoor unit”, set the SW2 and check the discharge temp. thermistor level. When the high-pressure sensor and discharge temp. thermistor are normal, if the above mentioned detecting pressure level and temp. are big different from the actual pressure and temp., replace the multi controller board.

5 1) Check the resistance of thermistor.

2) According to “Monitoring function for outdoor unit”, set the SW2 and check the outdoor pipe temp. thermistor level.

3) According to “Monitoring function for outdoor unit”, set the SW2 and check the outer temp. thermistor level.

Open/short circuit of discharge temperature thermistor (TH4)

Abnormal if open (3: or less) or short (217: or more) is detected during compressor operation. (Detection is inoperative for 10 minutes of

(5104)

compressor starting process and for 10 minutes after and during defrosting.)

1 Disconnection or contact fail-

ure of connector (TH4) on the outdoor controller circuit board

2 Defective thermistor

3 Defective outdoor controller

circuit board

1 Check connection of connector (TH4) on the

outdoor controller circuit board. Check breaking of the lead wire for thermistor (TH4). Refer to 9-6.

2 Check resistance value of thermistor (TH4)or

temperature by microcomputer. (Thermistor/TH4: Refer to 9-6.) (SW2 on A-Control Service Tool: Refer to 9-8.)

3 Replace outdoor controller board.

Error Code

Abnormal point and detection method

(1) Open/short circuit in the outdoor unit thermistors (TH3, TH7, and TH8) and branch box’s thermistors(TH-A~E)

Abnormal if open or short circuit is detected while the compressor is operating. Open detection of thermistors TH3 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting. WCheck which unit has abnormality in its

thermistor by switching the mode of SW2.

(Refer to 9-8.) Open/short circuit in the branch box thermistor. (TH-A–TH-E)

Case

1One or more connectors on out-

door controller circuit board (TH3, TH7 and TH8) and branch box controller board (TH-A~E) have contact failure or disconnection.

2Defective thermistor

3Outdoor controller circuit board

is defective.

Judgment and action

1Check the connector’s contact and the electric

wires of thermistor.

2Check the resistance value of thermistors or

the temperatures by referring to the section of “Monitoring function for outdoor unit”. (Convert modes by SW2.)

3Replace the whole outdoor controller board.

Symbol

TH3

U4 (TH3:5105) (TH7:5106) (TH8:5110)

(63HS:5201)

TH-A~E

:5131

()

(4230)

TH7 TH8

Branch box unit

TH-A~E

(Room A-E)

(2) High-Pressure sensor (63HS) abnormality

1When detected pressure in high-pressure

pressure sensor is 1MPa or less during the operation, the compressor stops and restarts operation in 3 minutes.

2When the detected pressure is 1MPa or

less at just before of restarting, the compressor stops abnormally. In this time, <U4> is displayed.

3For 3 minutes after the compressor

stops, the unit delays to abnormal stop. Then, the outdoor unit address No. and check delay code <U4> blinks alternately on the 7 SEG digital display.

4For 3 minutes after starting compressor,

for defrosting or for 3 minutes after recovery from defrosting, abnormality is not determined as abnormality.

Abnormal temperature of heatsink

Abnormal if heatsink thermistor(TH8) detects temperature indicated 85:

Thermistors

Name Thermistor <Outdoor pipe> Thermistor <Outdoor> Thermistor <Heatsink>

Thermistor (Gas pipe temperature detection)

Open detection Short detection

– 40: or below – 40: or below – 27: or below

– 40: or below 90: or above

1High-pressure sensor failure

2Internal pressure decrease by

gas leakage

3Connector contact failure dis-

connection

4Controller board input circuit

failure

The outdoor fan motor is locked

2 Failure of outdoor fan motor 3 Air flow path is clogged. 4 Rise of ambient temperature

5 Defective thermistor

6 Defective input circuit of

outdoor power circuit board

7 Failure of outdoor fan drive

circuit

90: or above 90: or above

102: or above

1 Check the high-pressure pressure sensor.

2 Check the internal pressure.

3 Check the high-pressure pressure sensor.

4 Check the controller board

12 Check outdoor fan. 3 Check air flow path for cooling.

4 Check if there is something which causes

temperature rise around outdoor unit.

(Upper limit of ambient temperature is 46:.) Turn off power, and on again to check if U5 is displayed within 30 minutes. If U4 is displayed instead of U5, follow the action to be taken for U4.

5 Check resistance value of thermistor (TH8)

or temperature by microcomputer. (Thermistor/TH8: Refer to 9-6.) (SW2 on A-Control Service Tool: Refer to 9-8.)

6 Replace outdoor power circuit board. 7 Replace outdoor controller circuit board.

Abnormality of power module

Check abnormality by driving power module in case overcurrent is detected.

(4250)

(UF or UP error condition)

1 Outdoor stop valve is closed. 2 Decrease of power supply voltage 3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective compressor 5 Defective outdoor power circuit

board

1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U·V·W phase) to

compressor. Refer to 9-7.

4 Check compressor referring to 9-6. 5 Replace outdoor power circuit board.

Error Code

Abnormal point and detection method Judgment and action

(1)Too low superheat due to low dis-

charge temperature

Abnormal if discharge superheat is continuously detected -15: or lss even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.

1 Disconnection or loose

connection of discharge temperature thermistor. (TH4)

2 Defective holder of discharge

temperature thermistor

Case

12 Check the installation conditions of

discharge temperature thermistor (TH4).

(1520)

(4400)

(4220)

(2) Erroneous connection of refrigerant

pipes or the connecting wires

Consider the stopping indoor unit abnormal if condenser/evaporator temperature thermistor (TH5 or RT12) detects -5: or below continuously for 5minutes during a compressor’s operation in cooling mode.

Outdoor fan motor

The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation. Fan motor rotational frequency is abnormal if;

• 100 rpm or below detected continuously for 15 seconds at 26: or more outside air temperature

• 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.

Overvoltage or voltage shortage and abnormal synchronous signal to main circuit

Abnormal if any of followings are detected during compressor operation;

• Decrease of DC bus voltage to 310V

• Instantaneous decrease of DC bus voltage to 200V

• Increase of DC bus voltage to 400V

• Decrease of input current of outdoor unit to 0.5A only if operation frequency is more than or equal to 40Hz or compressor

current is more than or equal to 5A.

1Failure in piping / wiring

2Pipe (liquid) is clogged or

crushed.

1Failure in the operation of

the DC fan motor

2Failure in the outdoor circuit

controller board

1 Decrease of power supply voltage 2 Disconnection of compressor

wiring

3 Defective 52C 4 Defective ACT module

5 Defective ACT module drive

circuit of outdoor power circuit board

6 Disconnection or loose connec-

tion of CNAF

7 Defective 52C drive circuit of

outdoor controller circuit board

8 Disconnection or loose

connection of CN5 on the outdoor power circuit board

9 Disconnection or loose

connection of CN2 on the outdoor power circuit board

1Check piping / wiring between branch box

and indoor unit. Refer to “Test run (Using remote controller)”.)

2Check the pipe for refrigerant and change the

wrong parts.

1Check or replace the DC fan motor. 2Check the voltage of the outdoor circuit

controller board during operation.

3Replace the outdoor circuit controller

board. (when the failure is still indicated even after performing the remedy 1 above.)

1 Check the facility of power supply. 2 Correct the wiring (U·V·W phase) to com-

pressor. Refer to 9-7.

3 Replace 52C.(VA/VA

Replace noise filter circuit board.(VA3)

4Replace ACT module. 5 Replace outdoor power circuit board.

6 Check CNAF wiring. 7 Replace outdoor controller circuit board.

(220-240VAC output : VA/VA (12V DC output : VA3)

8 Check CN5 wiring on the outdoor power

circuit board. Refer to 9-7.

9 Check CN2 wiring on the outdoor power

circuit board. Refer to 9-7.

1/VA2)

Compressor overcurrent interruption (When compressor locked)

Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.

(4100)

1 Stop valve is closed. 2 Decrease of power supply

voltage

3 Looseness, disconnection or

converse of compressor wiring

connection

4 Defective compressor 5 Defective outdoor power board

1 Open stop valve. 2 Check facility of power supply.

3 Correct the wiring (U·V·W phase) to

compressor. Refer to 9-7.

4 Check compressor.

Refer to 9-6.

5 Replace outdoor power circuit board.

Error Code

(5300)

(1300)

Abnormal point and detection method Judgment and action

Current sensor error

Abnormal if current sensor detects –1.5A to 1.5A during compressor operation. (This error is ignored in case of test run mode.)

Abnormal if input current exceeds 38 Aor 34A continuously 10 seconds.(Current sensor on noise filter board detects input current)

Low pressure (63L worked)

Abnormal if 63L is worked (under-

0.03MPa) during compressor operation. 63L: Low-pressure switch

1 Disconnection of compressor

wiring

2 Defective circuit of current

sensor on outdoor power circuit board

1Decrease of power supply volt-

age

1 Stop valve of outdoor unit is

closed during operation.

2 Disconnection or loose connec-

tion of connector (63L) on outdoor controller board

3 Disconnection or loose connec-

tion of 63L

4 Defective outdoor controller board 5 Leakage or shortage of refrigerant 6 Malfunction of linear expansion

valve

Case

1 Correct the wiring (U·V·W phase) to com-

pressor. Refer to 9-7.

2 Replace outdoor power circuit board.

1Check the facility of power supply.

1 Check stop valve. 2~4 Turn the power off and on again to check

if F3 is displayed on restarting. If F3 is displayed, follow the F3 processing direction.

5 Correct to proper amount of refrigerant. 6 Check linear expansion valve. Refer to 9-6.

(4210)

(No display)

Compressor overcurrent interruption

Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.

Remote controller communication error (Signal receiving error)

(1) Abnormal if any signal from IC of refrig-

erant address “0” could not be normally received for 3 minutes.

(2) Abnormal if sub remote controller could

not receive any signal for 2 minutes.

Remote controller communication error (Transmitting error)

(1) Abnormal if sub remote controller could

not find blank of transmission path for 6 seconds.

(2) Abnormal if remote controller could not

finish transmitting 30 times continuously.

1 Stop valve of outdoor unit is

closed.

2 Decrease of power supply volt-

age

3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective fan of indoor/outdoor

units

5 Short cycle of indoor/outdoor

units

6 Defective input circuit of out-

door controller board

7 Defective compressor

1 Defective communication cir-

cuit of remote controller

2 Defective communication cir-

cuit of indoor controller board of refrigerant address “0”

3 Noise has entered into transmis-

sion line of remote controller.

4 All remote controllers are set

as “sub” remote controller. In this case, E4 is displayed at outdoor LED, and E0 is displayed at remote controller.

1 Defective communication cir-

cuit of remote controller

2 Noise has entered into trans-

mission line of remote controller.

3 Two remote controllers are set

as "main." (In case of 2 remote controllers)

1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U·V·W phase) to com-

pressor. Refer to 9-7.

4 Check indoor/outdoor fan. 5 Solve short cycle. 6 Replace outdoor controller circuit board. 7 Check compressor. Refer to 9-6.

W Before the replacement of the outdoor con-

troller circuit board, disconnect the wiring for compressor from the outdoor power circuit board and check the output voltage among phases, U, V, W, during test run. No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency.

1~3 Diagnose remote controller.

Take actions as follows according to diagnosis result. a) When “RC OK” is displayed,

remote controllers have no problem. Turn the power off, and on again to check. If, “PLEASE WAIT” or “H0” is displayed for 4 minutes or more, replace indoor controller board.

b) When “RC NG” is displayed,

replace remote controller.

c) When “RC E3” or “ERC 00-66” is dis-

played, noise may be causing abnormality.

4 Set a remote controller to main, and the

other to sub.

w The descriptions above, 1-3, are for E0 and

E3.

Indoor - branch box/branch box outdoor unit communication error (Signal receiving error) (Branch box/outdoor unit)

(1) Abnormal if branch box/outdoor con-

(6840)

troller circuit board could not receive anything normally for 3 minutes.

1 Contact failure of indoor/out-

door unit connecting wire

2 Defective communication circuit

of branch box/outdoor controller circuit board

3 Defective communication cir-

cuit of indoor/branch box controller board

4 Noise has entered into

indoor–branch box/branch box– outdoor unit connecting wire.

1 Check disconnection or looseness of indoor–

branch box/branch box–outdoor unit connecting wire of indoor or branch box or outdoor units.

2~4 Turn the power off, and on again to

check. Replace indoor controller board or branch controller board or outdoor controller circuit board if abnormality is displayed again.

Error Code

(6841)

(6607

6608)

Abnormal point and detection method Judgment and action

Indoor - branch box/branch box outdoor unit communication error (Transmitting error) (Branch box/outdoor unit)

(1) Abnormal if “0” receiving is detected 30

times continuously though branch box/ outdoor controller circuit board has transmitted “1”.

(2) Abnormal if branch box/outdoor con-

troller circuit board could not find blank of transmission path for 3 minutes.

Non defined error code

This code is displayed when non defined error code is received.

1 Indoor–branch box/

branch box–outdoor unit connecting wire has contact failure.

2 Defective communication cir-

cuit of outdoor controller circuit board

3 Noise has entered power sup-

ply.

4 Noise has entered Indoor–

branch box/branch box– outdoor unit connecting wire.

1 Noise has entered transmis-

sion wire of remote controller.

2 Noise has entered Indoor–

branch box/branch box– outdoor unit connecting wire.

3 Model name of remote con-

troller is PAR-S25A.

Case

1 Check disconnection or looseness of indoor–

branch box/branch box–outdoor unit connecting wire.

2~4 Turn the power off, and on again to

check. Replace outdoor controller circuit board if abnormality is displayed again.

12 Turn the power off, and on again to check.

Replace indoor controller board or branch controller board or outdoor controller circuit board if abnormality is displayed again.

3 Replace remote controller with MA remote

controller.

(0403)

(2520)

Serial communication error

1.Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective.

Forced compressor stop.

(Overlap malti function of drain pump in

indoor unit and linear expansion valve in branch box.)

When condition which the outdoor unit is stopped forcibly consists, or the drain sensor detects continuously to go under water 5 times, and also detects ''[liquid pipe temperature-suction temperature][ -10deg'' for 30 minutes continuously, the indoor unit stops abnormally (however, fan operates by normal control) that indoor unit and excluding [Fan mode or OFF] in same refrigerant system. Also, the outdoor unit which is connected to that indoor unit with refrigerant system stops abnormality (compressor is inhibited to operation). In this time, <PA> is displayed.

1 Breaking of wire or contact fail-

ure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board

2 Breaking of wire or contact fail-

ure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board

3 Defective communication circuit

of outdoor power circuit board

4 Defective communication circuit

of outdoor controller circuit board for outdoor power circuit board

1 Drain pump trouble 2 Drain defective

· Drain pump clogging

· Drain pipe clogging

3 Open circuit of drain sensor

side heater

4 Contact failure of drain sensor

connector

5 Dew condensation on drain

sensor

· Drain water descends along lead wire.

· Drain water waving due to filter clogging

6 Indoor controller board defetive

· Drain pump drive circuit failure

· Drain heater output circuit failure

7 Both of above mentioned 1~6

and the linear expansion valve full closed failure happens synchronistically.

12 Check connection of each connector CN2

and CN4 between the outdoor controller circuit board and the outdoor power circuit board.

3 Replace outdoor power circuit board. 4 Replace outdoor controller circuit board.

1 Check the drain pump.

Performance 2 Please confirm whether water can be

drained.

3 Confirm the resistance of the drain sensor

side heater.

4 Check the connector contact failure.

5 Check the drain sensor leadwire mounted.

Check the filter clogging.

6 If the above mentioned checkpoints has any

problem, replace the indoor controller board.

7 Check whether the indoor linear expansion

valve leaks or not.

9-4. TROUBLESHOOTING BY INFERIOR PHENOMENA

Phenomena

1. Remote controller display works normally and the unit performs cooling operation, however, the capacity cannot be fully obtained. (The air does not cool well.)

2. Remote controller display works normally and the unit performs heating operation, however, the capacity cannot be fully obtained.

1Refrigerant shortage

2Filter clogging

3Heat exchanger clogging

4Air duct short cycle 1Linear expansion valve fault

Opening cannot be adjusted well due to linear expansion valve fault.

2Refrigerant shortage

3Lack of insulation for refrigerant piping 4Filter clogging

5Heat exchanger clogging

6Air duct short cycle 7Bypass circuit of outdoor unit fault

Factor

Countermeasure

1 If refrigerant leaks, discharging tempera-

ture rises and LEV opening increases. Inspect leakage by checking the temperature and opening. Check pipe connections for gas leakage.

2 Open intake grille and check the filter.

Clean the filter by removing dirt or dust on it.

3 If the filter is clogged, indoor pipe tem

perature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres sure. Clean the heat exchanger.

4 Remove the shield.

1 Discharging temperature and indoor heat

exchanger temperature does not rise. Inspect the failure by checking discharging pressure. Replace linear expansion valve.

2 If refrigerant leaks, discharging tempera-

ture rises and LEV opening increases. Inspect leakage by checking the temperature and opening. Check pipe connections for gas leakage.

3 Check the insulation. 4 Open intake grille and check the filter.

Clean the filter by removing dirt or dust on it.

5 If the filter is clogged, indoor pipe tem-

perature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pres sure. Clean the heat exchanger.

6 Remove the shield. 7 Check refrigerant system during opera-

tion.

3.1For 3 minutes after temperature

adjuster turns off, the compressor will not start operating even if temperature adjuster is turned on.

2For 3 minutes after temperature

adjuster turns on, the compressor will not stop operating even if temperature adjuster is turned off. (Compressor stops operating immediately when turning off by the remote controller.)

12Normal operation

(For protection of compressor)

12Normal operation

9-5. SPECIAL FUNCTIONS

SW1

CNDM

2 3

A Remote control panel B Relay circuit C External input adapter (PAC-SC36NA) D Outdoor unit control board E Replay power supply

F Procure locally G Max. 10m H Orange I Brown J Red

CN51

5 4 3

1 : Error display lamp

2 : Compressor operation lamp

X, Y : Relay (Coil standard of 0.9W or less for DC 12V)

CN3S

SW1

SW2

1 2

X, Y : Relay (DC1mA)

SW1 SW2

Heating

Validity of SW1

OFF

Cooling

Invalidity of SW1

A Distant control board B Relay circuit C External output adapter (PAC-SA88HA-E) D Outdoor unit control board

A Remote control panel B Relay circuit C External input adapter (PAC-SC36NA) D Outdoor unit control board

E Relay power supply F Procure locally G Max. 10m

w The indoor unit, which is operating in the mode different from the one determined by external signal (CN3S), will be a state of standby.

w The setting becomes effective when the outdoor unit is under stop. w The operation mode specified by test run will be prior to the mode of this function.

E Lamp power supply F Procure locally G Max. 10m

AB C

H I

L1 L2

CNDM

SW2

2 3

A Remote control panel B Relay circuit C External input adapter (PAC-SC36NA) D Outdoor unit control board E Replay power supply

F Procure locally G Max. 10m H Orange I Brown J Red

SW7-1

Power consumption when SW2 is on

OFF

0% (Forced compressor stop)

50%

9-5-1. Low noise mode (on-site modification) (Fig. 9-1)

By performing the following modification, operation noise of the outdoor unit can be reduced by about 3-4 dB. The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added to the CNDM connector (optional parts) on the control board of the outdoor unit.

• The capacity may be insufficient according to the outdoor temperature and conditions, etc. 1 Complete the circuit as shown when using the external input adapter (PAC-SC36NA). (Optional parts)

Fig.9-1

9-5-2. Demand function (on-site modification) (Fig. 9-2)

• It is possible to reduce electricity consumption within a range from 0 to 100 % by performing the following on-site installation. The demand function can be enabled by adding a commercially available input contact point ON/OFF switch to the CNDM connector (the contact point demand input, optional parts).

1 Incorporate the “Adapter for external input (PAC-SC36NA)” into the circuit as shown in the diagram below. 2 By switching SW7-1 on the control circuit board for the outdoor unit, the following power consumption restrictions

(compared to rated power) can be set.

9-5-3.Error and compressor operation monitoring function (CN51)

9-5-4. Auto change over - Operation mode locking function by external signal (CN3S)

Fig.9-2

Fig.9-3

Fig.9-4

9-6. HOW TO CHECK THE PARTS

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10:~30:)

Thermistor (TH3) <Outdoor pipe>

Thermistor (TH4) <Discharge>

Thermistor (TH7) <Outdoor>

Thermistor (TH8) <Heatsink>

Normal

160k"~410k"

4.3k"~9.6k" 39k"~105k"

TH4 TH3 TH7 TH8

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20

)

Solenoid valve coil <Four-way valve> (21S4)

Motor for compressor (MC)

Normal

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20

)

Normal

1197±10"

Abnormal

Open or short

Solenoid valve coil <Bypass valve> (SV2)

Measure the resistance between the terminals with a tester. (At the ambient temperature 20:)

Normal

1327±10"

Abnormal

Open or short

Solenoid valve coil <Bypass valve> (SV1)

Fan motor(MF1,MF2)

1370±100"

0.188"

Measure the resistance between the terminals with a tester. (Winding temperature 20

)

Normal

Abnormal

Open or short

Refer to next page.

MXZ-8A140VA

(1) MXZ-8A140VA2, 3

1435±150"

MXZ-8A140VA

(1) MXZ-8A140VA2, 3

1450±150"

OUTDOOR UNIT : MXZ-8A140VA MXZ-8A140VA

1 MXZ-8A140VA2 MXZ-8A140VA3

Check method of DC fan motor (fan motor / outdoor controller circuit board)

Notes

· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service.

· Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit Self check

Symptom : The outdoor fan cannot turn around.

Fuse check

Check the fuse (F5) on outdoor controller board.

board and fan motor.)

Did the fuse blow?

Wiring contact check

Contact of fan motor connector (CNF1, 2)

Is there no contact failure?

Yes

Power supply check (Remove the connector (CNF1, 2))

Measure the voltage in the outdoor controller circuit

TEST POINT

1 :VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC250~330V

Yes

Replace outdoor controller board (C.B) and fan motor (MF1, 2).

Wiring recovery

board.

TEST POINT 2 :VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Is the voltage normal?

Replace outdoor controller board.

Check the operation. END

Yes

Replace the fan motor.

Yes

Check the operation of fan. END

Replace outdoor controller board.

Replace the fan motor.

-20 -10 0 10 20 30 40 50

Temperature (:)

Resistance (k")

200

150

100

25 50 75 100110 125

Temperature (:)

Resistance (k")

500

400

300

200

100

50 75 100 120

Temperature (:)

Resistance (k")

Low temperature thermistors

Pipe temperature thermistor <Liquid> (TH3) Pipe temperature thermistor <cond.> (TH6) Outdoor temperature thermistor (TH7) Gas pipe temperature thermistor (TH-A ~ TH-E)···· Branch box

Thermistor R0 = 15k' ±3% B constant = 3480 ± 2%

t =15exp{3480(

R 0: 15k'

10: 9.6k'

273+t – 273

30: 4.3k' 40: 3.0k'

)}

20: 6.3k' 25: 5.4k'

Medium temperature thermistor

Heatsink temperature thermistor (TH8) Thermistor R50 = 17k' ±2%

B constant = 4170 ± 3%

t =17exp{4170(

273+t – 323

)}

0: 180k' 25: 50k' 50: 17k' 70: 8k' 90: 4k'

High temperature thermistor

Discharge temperature thermistor (TH4)

Thermistor R120 = 7.465k' ±2% B constant = 4057 ± 2%

t =7.465exp{4057(

20: 250k' 30: 160k' 40: 104k' 50: 70k' 60: 48k'

273+t – 393

70: 34k' 80: 24k' 90: 17.5k' 100: 13.0k' 110: 9.8k'

)}

BRANCH BOX : PAC-AK50BC

1 2 3 4 5 6

Blue

Brown

Yellow

Orange

Red

White

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10:~30:)

Disconnect the connector then measure the resistance with a tester. (

Winding temperature 20

Thermistor (TH-A~E) <Gas pipe>

Normal

4.3k"~9.6k"

Abnormal

Open or short

Normal

Red - White

Red - Orange

Brown - Yellow

Brown - Blue

Abnormal

46±4"

Linear expansion valve ( LEV-A~E )

Open or short

PAC-AK30BC

Open

Extra tightening (about 32 pulse)

Pulse number

500 pulse Opening a valve all the way

Valve position (capacity)

LEV

Red

Brown

Blue

Orange

Yellow

White

Connector LEV-A

LEV-B LEV-C LEV-D LEV-E

DC12V

branch box controller board

Drive circuit

Linear expansion valve

ON OFF OFF OFF

ON OFF OFF

OFF

ON OFF OFF

OFF

ON ON

OFF

Output

(Phase)

Output

[2 [3

234

5678

OFF OFF

OFF

OFF OFF

ON ON

OFF OFF OFF

ON OFF OFF

(LEV) in Branch box

(1) Operation summary of the linear expansion valve

• Linear expansion valve open/close through stepping motor after receiving the pulse signal from the branch box controller board.

• Valve position can be changed in proportion to the number of pulse signal.

(2) Linear expansion valve operation

Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8 Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 1 The output pulse shifts in above order.

• When linear expansion valve operation stops, all output phase become OFF.

• When the switch is turned on, 700 pulse closing valve signal will be sent till it goes to

A point in order to define the valve position.

(The pulse signal is being sent for about 20 seconds.)

• When the valve moves smoothly, there is no sound or vibration occurring from the linear expansion valve : however, when the pulse number moves from B to A or when the valve is locked, sound can be heard. No sound is heard when the pulse number moves from B to A in case coil is burnt out or motor is locked by open-phase.

• Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve.

(3) How to attach and detach the coil of linear expansion valve

<Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below.

Coil

Lead wire

Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly. Otherwise pipes can bend due to pressure.

Stopper

Main body

Hold the lower part of the main body (shown as A) firmly so that the main body does not move and attach the coil by inserting it downward into the main body. Then securely attach the coil stopper to pipe B. (At this time, be careful that stress is not added to lead wire and main body is not wounded by lead wire.) If the stopper is not firmly attached to pipe B, coil may be detached from the main body and that can cause defective operation of linear expansion valve. To prevent piping stress, be sure to attach the coil holding the main body of linear expansion valve firmly. Otherwise pipe may break.

Be sure to attach the stopper to pipe B.

Troubleshooting

Problem

Check point

Corrective measure

If the linear expansion valve becomes locked and the motor is still operating, the motor will emit a clicking noise and will not function. This clicking noise indicates an abnormality.

Use an all-purpose electrical meter to measure the resistance between the different coils (red-white, red-orange, brown-yellow, brown-blue). Normal resistance is within a range of 46"±4%.

In order to check the linear expansion valve, operate 1 indoor unit in the fan mode and another in the cooling mode. Then, use the outdoor multi controller board to operate the monitor and check the pipe temperature of the indoor unit. The linear expansion valve should be fully closed when the fan is operating. The temperature measured by the temperature sensor will drop if there is any leakage. If the measured temperature is significantly lower than that on the remote controller, this indicates that the valve is not closed. It is not necessary to replace the linear expansion valve if the leak of refrigerant is small and does not cause a malfunction.

1 Check improperly connected connector terminals and the wire colors. 2 Remove the connector on the controller board side and check electrical

conductance.

Locked expansion valve

Short circuit or broken circuit in expansion valve motor coil

Valve does not close completely.

Incorrect connection or connection failure

Replace the linear expansion valve.

Replace the linear expansion valve if there is a major leak of refrigerant.

Continuity check of wrong part

9-7. TEST POINT DIAGRAM

9-7-1. Outdoor controller circuit board MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2

CNS

Communication power supply ZD71 Voltage developed across: 16-30V DC

CNAC

2 to 4: Power supply for outdoor controller circuit board (220V-240V AC) 1 to 3: Power supply for indoor and branch box / outdoor unit connection wire (220V-240V AC)

CN2

Connect to the outdoor power circuit board (CN2) 1-5: Power circuit board ➔

Transmitting signal to the controller circuit board (0-5V DC) 2-5: Zero cross signal

(0-5V DC)

3-4: Not used 6-5: 18V DC 7-5: 18V DC

[5: – 1,2,6,7: + ]

52C Contactor

(Branch box/outdoor unit connecting wire)

–

<CAUTION> TEST POINT1 is high voltage.

VCC (TEST POINT 2)

(voltage between pins of C6B): DC 15V

63H

High pressure switch

VDC (TEST POINT 1)

(voltage between pins of C5E): DC280V-350V

CNDC

DC280V-350V

Connect from

}

outdoor power

–

circuit board

(CNDC)

VSP (TEST POINT 3)

(voltage between pins of C5A, C5B): DC 0V (when stopped), DC 1– 6.5V (when operated)

VFB (TEST POINT 4)

(voltage between right pins of PC5C and PC5D, pin 3 and pin 4)

TH6

Thermistor <Outdoor 2-phase pipe>

TH7

Thermistor<Outdoor>

TH3

Thermistor <Outdoor pipe>

TH4

Thermistor <Discharge>

21S4

Four-way valve

SV2

Solenoid valve2

SV1

Solenoid valve1

CN4

Transmission to outdoor power circuit board (CN4)

LED3

CN51

CNDM

1 to 2: Input of low noise mode 1 to 3: Input of external

contact point

CN3S

SW10

SW2

SW9

63HS High pressure sensor

63L

Low pressure switch

SW5

Function switch

SW6

Model setup

SW1

Forced defrost, detect history record reset

SW7

SW4

Test operation

Outdoor controller circuit board

MXZ-8A140VA3

SW1

Forced defrost, detect history record reset

SW6

Model select

SW4

Test operation

SW5

Function switch

SW8

SW7

SW9

SW2

CN3S

<CAUTION> TEST POINT1 is high voltage.

CN51

CNDM

1 to 2: Input of low noise mode 1 to 3: Input of external contact point

CN52C

(Connect to the noise filter circuit board (CN52C))

LED CN4

Transmission to outdoor power circuit board (CN4)

63L

Low pressure switch

63HS

High pressure sensor

TH4

Thermistor <Discharge>

TH3

Thermistor <Outdoor pipe>

TH7/6

Thermistor <Outdoor/

2-phase pipe>

63H

High pressure switch

VFG (TEST POINT 4)

(Voltage between right pins of PC5C and PC5D, pin 3 and pin 4) (Same as

(CNF1

7(+)-4(-))

VSP (TEST POINT 3)

(Voltage between pins of C5A, C5B): DC 0V (when stopped), DC 1–

6.5V (when operated)

CNF1, CNF2 Connect to the fan motor

1-4: 280V DC 5-4: 15V DC 6-4: 0-6.5V DC 7-4: 15V DC(When stopped)

7.5V DC(When operated)(0V-15V pulse)

CNDC

280V DC (1+, 3-) Connect to outdoor power circuit board(CNDC)

SV1

Solenoid valve 1

SV2

Solenoid valve 2

21S4

Four-way valve

CN2

Connect to the outdoor power circuit board (CN2)

1-5: Reception from 2-5: Zero cross signal 3,4: Not used

6-5: 16V DC 7-5: 16V DC

CNAC

2 to 4: Power supply for outdoor controller circuit board (220V-240V AC) 1 to 3: Power supply for indoor and outdoor unit connection wire (220-240V AC)

CNS

S1-S2: 220-240V AC

(Branch box/outdoor unit connecting wire)

+ -

Communication power supply D71 Voltage 24V DC

power circuit board (0-5V DC)

9-7-2. Outdoor noise filter circuit board MXZ-8A140VA

LO, NO Voltage of 220-240V AC is output (Connect to the outdoor power circuit board (SC-R, SC-S))

CNAC1, CNAC2 220-240V AC (Connect to the outdoor controller circuit board (CNAC))

EI Connect to the earth

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

LI, NI Voltage of 220-240V AC is input (Connect to the terminal block(TB1))

Outdoor noise filter circuit board MXZ-8A140VA1 MXZ-8A140VA2

LO, NO Voltage of 220-240V AC is output (Connect to the outdoor power circuit board)

TABS

TABT

CNAC1, CNAC2 220-240V AC (Connect to the outdoor controller circuit board (CNAC))

EI Connect to the earth

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

LI, NI Voltage of 220-240V AC is input (Connect to the terminal block(TB1))

Outdoor noise filter circuit board

MXZ-8A140VA3

RS1

CNAC1, CNAC2 220-240V AC (Connect to the outdoor controller circuit board (CNAC))

CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C).)

LO, NO Voltage of 220-240V AC is output (Connect to the outdoor power circuit board (TABS, TABT))

EI Connect to the earth

E2 Connect to the earth

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

LI, NI Voltage of 220-240V AC is input (Connect to the terminal block(TB1)).

9-7-3. Outdoor power circuit board MXZ-8A140VA

CN5 Detection of primary current (Connect to the outdoor noise filter circuit board (CN5))

CN3 Temperature <Heatsink> (TH8)

Brief Check of POWER MODULE

W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of POWER MODULE

Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W shown in the diagram are not actually printed on the board.

CN4 Connect to the outdoor controller circuit board (CN4)

1.Check of DIODE circuit L - P1 , N - P1 , L - N1 , N - N1

2.Check of IGBT circuit

P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

CN2 Connect to the outdoor controller circuit

CNAF Connect to ACTM

board (CN2) 1-5: Power circuit board

signal to the controller board (0-5V DC)

2-5: Zero cross signal (0-5V DC) 3-4: 18V DC 6-5: 15V DC 7-5: 15V DC

[ 5 : – 1, 2, 6, 7 : + ] [ 4 : – 3 : + ]

➔ Transmitting

TAB-U, TAB-V, TAB-W Connect to the compressor (MC) Voltage among phases:

5V-180V AC

SC-P1 Connect to 52C

SC-N1 Connect to ACTM

POWER MODULE

SC-R, SC-S Connect to the outdoor noise filter circuit board (LO, NO)

CNDC

–

280V-350V DC

}

Connect to the outdoor controller circuit board (CNDC)

220V-240V AC

SC-P2, SC-N2 Connect to ACTM and the soothing capacitor

Outdoor power circuit board MXZ-8A140VA1 MXZ-8A140VA2 MXZ-8A140VA3

Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of POWER MODULE

1.Check of DIODE circuit S - P1 , T - P1 , S - N1 , T - N1

2.Check of IGBT circuit

P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

Note:The marks, L , N , N1 , N2 , P1 , P2 , U , V and W shown in the diagram are not actually printed on the board.

CN2 Connect to the outdoor controller circuit board (CN2) 1-5:Transmitting signal to the outdoor

controller circuit board (0~5V DC)

2-5:Zero cross signal (0~5V DC) 3-4:18V DC 6-5:16V DC 7-5:16V DC

CN3 Thermistor (TH8) <Heatsink>

CN5 Detection of primary current Connect to the outdoor noise filter circuit board (CN5)

CN4 Connect to the outdoor controller circuit board (CN4)

CNDC 310V DC (1+, 3–)

Connect to the outdoor controller circuit board

TABS/T Connect to the outdoor noise filter circuit board Voltage among phases:220-240V AC

TABN1/SC-N1 Connect to the ACTM(-)

TABP1/SC-P1 Connect to 52C

TABP2/SC-P2 Connect to the ACTM(P)

TABU/V/W Connect to the compressor (MC) Voltage among phases:10V~180V AC

TABN2/SC-N2 Connect to the ACTM(N2)

9-7-4. Branch box controller board PAC-AK50BC PAC-AK30BC

TH-A to E Connect to Thermistor-A to E TH-A to C for PAC-AK30BC

LED3~5 Not used

LED2 Transmission (Branch box/outdoor) Reception state disply on branch box side

Branch box No.1 LED2 blinks once. (0.1sec. : ON,

0.9sec. : OFF)

LED1 Transmission start-up state display Start-up : LED1 blinks (0.5sec. : ON, 0.5sec. : OFF) Start-up completion:LED1 lights

LEV-Ato E Connect to LEV-Ato E LEV-Ato C for PAC-AK30BC

Branch box No.2 LED2 blinks twice. (0.1sec. : ON,

0.1sec. : OFF

0.1sec. : ON,

0.7sec. : OFF)

*The blinking interval

might change when there are changes in states of indoor units.

TB3A toTB3E Connect to TB3A to TB3E (Branch box / Indoor unit connecting wire)

TB3A to TB3C for PAC-AK30BC

CN3C, CND Connect to TB2B (Branch box / Outdoor unit connecting wire)

9-7-5. Active filter module

DCL

L1 L2

ACTM

N1 N2

(+)

(-)

Load

MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2

–

Connect to the outdoor power circuit board(TABN1)

Connect to the outdoor power circuit board(TABP1)

L1, L2 Connect to the DCL(Reactor)

Connect to the outdoor power circuit board(CNAF)

1 : GND 2-1 : 15V DC 3-1 : Control signal 4, 5 : Not used 6-1 : Control signal

I Not used

N2 Connect to the outdoor power circuit board(TABN2)

Connection and internal circuit diagram

P Connect to the outdoor power circuit board(TABP2)

N1 Non-connect

Active filter module

DCL

L1 L2

ACTM

N1 N2

(+)

(- )

Load

MXZ-8A140VA3

L1, L2 Connect to the DCL(Reactor)

P Connect to the outdoor power circuit board(TABP2)

N1 Non-connect

Upper side

Connect to the outdoor power circuit board (TABP1)

–

Connect to the outdoor power circuit board(TABN1)

Connect to the outdoor power circuit board(CNAF)

1 : GND 2-1 : 15V DC 3-1 : Control signal 4, 5 : Not used 6-1 : Control signal

Lower side

N2 Non-connect

Io Connect to the outdoor power circuit board(TABN2)

Connection and internal circuit diagram

Forced defrost Start

Normal

—

When compressor is working in heating operation. w

Abnormal history clear

No function

Self-diagnosis

(Indoor unit selection)

Indicating a particular self-diagnosis

Clear

—

off or operating

—

Test run Operating OFF

Under suspension

Test run mode setting

Heating Cooling

Indoor No.1

Indoor No.4

Indoor No.7

Indoor No.2

Indoor No.5

Indoor No.8

Indoor No.3

Indoor No.6

1 2

ON OFF

No.

Function Effective timing

Action by the switch operation

Switch

SW1

Dip

switch

SW4

Type of

Switch

ABCDEABC

ICRCIC IC

Indoor

No.1

Indoor

No.2

Indoor

No.3

Indoor

No.4

Indoor

No.5

R C

BC#1 (5- branch type)

BC#2

(3- branch type)

BC#1 : branch box controller unit Number 1

1 blinking LED2 (branch box controller board)

BC#2 : branch box controller unit Number 2

2 blinking LED2 (branch box controller board)

1ON23456

9-8. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

Forced defrost should be done as follows.

1Change the DIP SW1-1 on the outdoor controller board from OFF to ON. 2Forced defrost will start by the above operation 1 if these conditions written below are satisfied.

• Heat mode setting

• 10 minutes have passed since compressor started operating or previous forced defrost finished.

• Pipe temperature is less than or equal to 8:. 3Forced defrost will finish if certain conditions are satisfied. wForced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON.

After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This

depends on the service conditions.

MXZ-8A140VA MXZ-8A140VA1 MXZ-8A140VA2

Type of

Switch

Dip

switch

Switch

SW5

SW7

SW8

SW6

SW9

No.

1 2 3

4 1 2

3 4 5 6 1 2 3

1 2 3 4 5 6

Function Effective timing

No function

Switching the target

sub-cool

No function

No function Demand switching function

No function

Max. Frequency down

No function

Model selection

LEV opening setting function for stopping unit during heating operation

Switching function of defrosting prohibited time

(Heating mode)

Action by the switch operation

ON OFF

—

Target sub-cool down

— —

Capability cut

50%

—

Active

— — — — — —

Changed

60 minutes

—

Normal

— —

Normal

—

Normal

— — — — — —

SW6

1ON23456

Normal

30 minutes

(Normal)

—

Always

— —

Always

—

Always

— — — — — —

Always

SW10

Switching the Input

Current Limit Level

During the FAN or COOL mode, and thermo - OFF in heating operation, set the

opening of liner expansion valve on branch box

3 A down

Active

Normal

Inactive

Before turning

the power on

While unit stopping

CN31

Types Connector Function Effective timing

Connector

Open a little bit

Pin 1-2 Short Pin 2-3 Short

Action by Pin short operation

LEV opening function

(at start-up)

When power supply ON

Normal

MXZ-8A140VA3

Type of

Switch

switch

Switch

SW5

SW7

SW8

Dip

SW6

SW9

No.

1 2

3, 4 5, 6

1 2

3 4 5 6 1 2 3

1 2 3 4 5 6 7 8

Function Effective timing

No function

Switching the target

sub-cool

Demand switching function

Max. Frequency down

LEV opening setting function for stopping unit during heating operation

Switching function of defrosting prohibited time

Switching the Input Current Limit Level

During the FAN or COOL mode, and thermo - OFF in heating operation, set the opening of liner expansion valve on branch box

(Heating mode) No function No function

No function

No function No function No function No function No function No function

Model selection

Action by the switch operation

ON OFF

—

Target sub-cool down

— —

Capability cut

50%

—

Active

— — — — — —

Changed

60 minutes

3 A down

Active

—

Normal

— —

Normal

—

Normal

— — — — — —

SW6

1ON2345678

Normal

30 minutes

(Normal)

Normal

Inactive

—

Always

— —

Always

—

Always

— — — — — —

Always

Before turning

the power on

While unit stopping

(2) Function of connector

1ON23456

1 second

interval

Display Operation Model

The tens digit : Operation mode

The ones digit : Relay output

O C H d

Display

0 1 2 3 4 5 6 7 8

Compressor

Warming-up Compressor

4-way valve

Solenoid valve

(SV1, 2)

— — —

— ON ON ON ON

—

— — — — — — —

— ON ON

—

— ON ON

—

— ON ON

— ON

—

— —

OFF / FAN

COOLING / DRY

HEATING

DEFROSTING

Display Contents to be inspected (When power is turned on)

F3 F5 F9

Eb Ec

E0~E7

63L connector(red) is open. 63H connector(yellow) is open. 2 connectors (63H/63L) are open. Branch box/outdoor communication error (Signal receiving error) (Outdoor unit) Indoor/branch box communication error (Signal receiving error) (Branch box) Branch box/outdoor communication error (Transmitting error) (Outdoor unit) Indoor/branch box communication error (Transmitting error) (Branch box)

• Miswiring of indoor - branch box/branch box - outdoor unit connecting wire

• Too many indoor units/branch box are in the system. Miswiring of indoor - branch box/branch box - outdoor unit connecting wire(converse wiring or disconnection) Startup time over Communication error except for outdoor unit

Display Inspection unit

01Outdoor unit,

Branch box unit Indoor unit

Display Contents to be inspected (During operation)

U2 U7 U1

UL U6 UF

UP U3

U4 U5

U8 U9

Discharge temperature fault Low-discharge superheating fault, Erroneous connection of refrigerant pipes or the connecting wires High pressure fault (63H operates) Low pressure fault (63L operates) Abnormality of power modules Compressor overcurrent shutoff (Start up locked) Current sensor fault (P. B.) Compressor overcurrent shutoff fault Discharge pipe/compressor thermistor (TH4) open or short-circuit Outdoor unit thermistors (TH3, TH6, TH7, and H8), 63HS, and branch box thermistors open or short-circuit HEATSINK temperature fault Abnormality in outdoor fan motor Voltage fault, current sensor fault (N. F.) Forced compressor stop (Overlap malfunction of drain pump in indoor unit and linear expansion valve in branch box.)

Digital indicator LED3 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on outdoor controller.

Operation indicator SW2 : Indicator change of self diagnosis

SW2 setting

Display detail

Explanation for display Unit

(Be sure that 1 to 6 in the SW2 are set to OFF.) (1) Display when the power supply is ON.

When the power supply is ON, blinking displays by turns. Wait for 4 minutes at the longest.

(2) When the display lights (Normal operation)

1Operation mode display

(Lighting)

LED3

2Display during error postponement

Postponement code is displayed when compressor stops due to the work of protection device. Postponement code is displayed while error is being postponed.

(3) When the display blinks

Inspection code is displayed when compressor stops due to the work of protection devices.

SW2

(Initial setting)

SW2 setting

1ON23456

1ON23456 1ON23456

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Display detail

Pipe temperature / Liquid(TH3) – 40~90

Explanation for display Unit

– 40~90 (When the coil thermistor detects 0: or below, “–”

and temperature are displayed by turns.) (Example) When –10:; 0.5 secs. 0.5secs. 2 secs.

Discharge temperature (TH4) 3~217

Output step of outdoor FAN 0~10

The number of ON / OFF times of compressor 0~9999

Compressor integrating operation times 0~9999

Compressor operating current 0~50

3~217 (When the discharge thermistor detects 100: or

more, hundreds digit, tens digit and ones digit are

displayed by turns.) (Example) When 105:; 0.5 secs. 0.5secs. 2 secs.

0~10

0~9999 (When the number of times is 100 or more,

hundreds digit, tens digit and ones digit are

displayed by turns.) (Example) When 42500 times (425

✕100 times);

0.5 secs. 0.5secs. 2 secs.

0~9999 (When it is 100 hours or more, hundreds digit, tens

digit and ones digit are displayed by turns.) (Example) When 2450 hours (245 ✕10 hours);

0.5 secs. 0.5secs. 2 secs.

0~50 wOmit the figures after the decimal fractions.

Step

100 times

10 hours

Compressor operating frequency 0~225

LEV opening pulse 0~500

Error postponement code history (1) of outdoor unit

Operation mode on error occurring Operation mode of when operation stops due to

0~255 (When it is 100Hz or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 125Hz; 0.5 secs. 0.5secs. 2 secs.

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

error is displayed by setting SW2 like below.

(SW2)

Pulse

Code

display

Code

display

SW2 setting

1ON23456 1ON23456

1ON23456

1302

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Display detail

Pipe temperature / Liquid(TH3) on error occurring – 40~90

Explanation for display Unit

– 40~90 (When the coil thermistor detects 0: or below, “–”

and temperature are displayed by turns.) (Example) When –15:; 0.5 secs. 0.5secs. 2 secs.

Compressor temperature (TH4) or discharge temperature (TH4) on error occurring 3~217

Compressor operating current on error occurring 0~50

Error code history (1) (latest) Alternate display of abnormal unit number and code

Error code history (2) Alternate display of error unit number and code

Thermostat ON time 0~999

3~217 (When the temperature is 100: or more, the

hundreds digit, tens digit and ones digit are

displayed by turns.) (Example) When –15:; 0.5 secs. 0.5secs. 2 secs.

0~50

When no error history, “ 0 ” and “–” are displayed by turns.

0~999 (When it is 100 minutes or more, the hundreds digit,

tens digit and ones digit are displayed by turns.) (Example) When 245 minutes; 0.5 secs. 0.5secs. 2 secs.

Code

display

Code

display

Minute

Test run elapsed time 0~120

Capacity code of indoor unit (Qj)

0~120 (When it is 100 minutes or more, the hundreds digit,

tens digit and ones digit are displayed by turns.) (Example) When 105 minutes; 0.5 secs. 0.5secs. 2 secs.

The capacity code of indoor unit is displayed.

Minute

Code

display

SW2 setting

1ON23456

Capacity

MXZ-8A140VA

Code

Setting details

• The tens digit (Total display for applied setting)

• The ones digit

H·P /

Cooling only

Single phase / 3 phase

Display details

0 : H·P 1 : Cooling only 0 :

Single phase

2 : 3 phase

Setting details

Defrosting switch

Display details

0 : Normal 1 : For high humidity

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Display detail

Explanation for display

Capacity setting display Displayed as an outdoor capacity code.

Outdoor unit setting information

(Example) MXZ-8A140VA, “00” is displayed.

Unit

Code

display

Code

display

Indoor pipe temperature / Liquid – 39~88

Indoor pipe temperature / Cond. / Eva. Indoor – 39~88

Branch box pipe temperature / gas – 39~88

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

Targeted evaporating temperature : ETm

(Cooling) Targeted high pressure : Pdm (Heating) – 39~88

Indoor room temperature 8~39

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

8~39

of/f

1ON23456

SW2 setting

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Display detail

Indoor setting temperature 17~30

Explanation for display Unit

17~30

1ON23456

Outdoor pipe temperature / Cond./ Eva. (TH6) – 39~88

Outdoor temperature (TH7) – 39~88

Outdoor heatsink temperature (TH8) – 40~200

Discharge superheat. SHd 0~255

Sub-cool. SC (cooling mode) 0~130

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 40~200 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

(When the thermistor detects 100: or more,

hundreds digit, tens digit and ones digit are displayed by turns.)

0~255 (When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by turns.)

0~130 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.)

°C

Input current of outdoor unit 0~500

High pressure 63HS 0~500

Targeted operation frequency 0~255

DC bus voltage

180~370

(When it is 100 or more, hundreds digit, tens digit

and ones digit are displayed by turns.)

(When it is 100 or more, hundreds digit, tens

digit and ones digit are displayed by turns.) (0~4.9MPa)

0~255 (When it is 100Hz or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

180~370 (When it is 100V or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

0.1 A

0.1 of/f

SW2 setting

1ON23456

1ON23456 1ON23456

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

1ON23456

Display detail

Target Sub-cool (Cooling mode) : SCm 0~255

Explanation for display Unit

Error postponement code history (2) of outdoor unit

Error postponement code history (3) of outdoor unit

Error code history (3) (Oldest) Alternate display of abnormal unit number and code

Error thermistor display

When there is no error thermistor, “–“ is displayed.

Operation frequency on error occurring 0~255

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

When no error history, “0” and “–“ are displayed by turns.

: Outdoor pipe temperature /Liquid (TH3)

: Outdoor outside temperature (TH7)

: Outdoor radiator panel (TH8)

: Branch box pipe temperature / Gas (TH–A~E)

: High pressure sensor (63HS)

0~255 (When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 125Hz; 0.5 secs. 0.5secs. 2 secs.

Code

display

Code

display

Code

display

Code

display

Fan step on error occurring 0~10

LEV opening pulse on error occurring 0~500

Indoor room temperature

on error occurring 8~39

0~10

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns.) (Example) When 130 pulse; 0.5 secs. 0.5secs. 2 secs.

8~39

Step

Pulse

SW2 setting

1ON23456

1ON23456 1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

1ON23456

Display detail

Indoor pipe temperature / Liquid on error occurring – 39~88

Explanation for display Unit

– 39~88 (When the temperature is 0°C or less, “–” and

temperature are displayed by turns.) (Example) When –15°C; 0.5 secs. 0.5secs. 2 secs.

Indoor pipe temperature / Cond./ Eva. on error occurring – 39~88

Outdoor pipe temperature / Cond./ Eva. (TH6) on error occurring – 39~88

Outdoor outside temperature (TH7) on error occurring – 39~88

Outdoor heatsink temperature (TH8) on error occurring – 40~200

– 39~88 (When the temperature is 0°C or less, “–” and

temperature are displayed by turns.) (Example) When –15°C; 0.5 secs. 0.5secs. 2 secs.

– 39~88 (When the temperature is 0°C or less, “–” and

temperature are displayed by turns.) (Example) When –15°C; 0.5 secs. 0.5secs. 2 secs.

– 39~88 (When the temperature is 0°C or less, “–” and

temperature are displayed by turns.) (Example) When –15°C; 0.5 secs. 0.5secs. 2 secs.

– 40~200 (When the temperature is 0°C or less, “–” and

temperature are displayed by turns.) (When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by

turns.)

Discharge superheat on error occurring SHd 0~255

Sub-cool on error occurring. SC 0~130

0~255 (When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by

turns.) (Example) When 150°C; 0.5 secs. 0.5secs. 2 secs.

0~130 (When the temperature is 100°C or more, hundreds

digit, tens digit and ones digit are displayed by

turns.) (Example) When 115°C; 0.5 secs. 0.5secs. 2 secs.

SW2 setting

1ON23456

Normal Overvoltage error Undervoltage error T phase interruption error Abnormal power synchronous signal PFC error (Overvoltage / Undervoltage / Overcurrent)

W Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Undervoltage (02) + Power-sync signal error (08) = 0A T phase interruption (04) + PFC error (10) = 14

Power circuit board Controller circuit board Controller circuit board Power circuit board

Power circuit board

—

Description Detection point Display

00 01 02 04 08

1ON23456

∆tj

Cooling Heating

∆tj = room temp. – Set temp. ∆tj = Set temp. – room temp.

Code of the difference between room temperature and set temperature ("∆tj")

0 1 2 3 4 5 6 7 8 9

000 100 010

110 001 101

011

111

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

∆tj [ –0.5 –1.0 < ∆tj [ –0.5 –0.5 < ∆tj [ –0.5

0.0 < ∆tj [ 0.0

0.5 < ∆tj [ 0.5

1.0 < ∆tj [ 1.0

1.5 < ∆tj [ 0.5

2.0 < ∆tj [ 2.0

2.5 < ∆tj [ 2.5

3.0 < ∆tj [ 3.0

∆tj [ –0.5

–0.5 < ∆tj [ 0.0

0.0 < ∆tj [ 0.5

0.5 < ∆tj [ 1.0

1.0 < ∆tj [ 1.5

1.5 < ∆tj [ 2.0

2.0 < ∆tj [ 2.5

2.5 < ∆tj [ 3.0

3.0 < ∆tj [ 3.5

3.5 < ∆tj

SW setting (1-4, 5, 6)

Target unit

1ON23456

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Indoor unit 7 Indoor unit 8

0 1 0 1 0 1 0 1

0 0 1 1 0 0 1 1

0 0 0 0 1 1 1 1

SW1

Display detail

Thermostat-on time until error stops 0~999

Target rotation of outdoor fan motor 0~999

Sub-cool (Heating mode) 0~130

Code of the difference between room temperature and set temperature ("∆Tj": 0–99)

■Tens digit of code: current ∆Tj

■Units digit of code: ∆Tj a minute

ago

0~999 (When it is 100 minutes or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 415 minutes;

Explanation for display Unit

0.5 secs. 0.5secs. 2 secs.

Minute

rpm

U9 Error status during the Error postponement period

Code

display

Code

display

1ON23456

1 second

interval

1ON23456

1ON23456 1ON23456

[When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to branch box controller board(CNM)]

Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on ‘A-Control Service Tool’.

Operation indicator SW2 : Indicator change of self diagnosis

SW2 setting

Display detail

Explanation for display Unit

(Be sure that 1 to 6 in the SW2 are set to OFF.) (1) Display when the power supply is ON.

When the power supply is ON, blinking displays by turns. Wait for 2 minutes at the longest.

(2) When the display lights (Normal operation)

1The number of connected indoor units to this branch box (0 - 5)

LED1

(Lighting)

Pipe temperature / Liquid(TH3) – 40~90

Discharge temperature (TH4) 3~217

Output step of outdoor FAN 0~15

Unit number of this branch box 1~2

SW2

(Initial setting)

– 40~90 (When the coil thermistor detects 0: or below, “–”

and temperature are displayed by turns.) (Example) When –10:; 0.5 secs. 0.5secs. 2 secs.

3~217 (When the discharge thermistor detects 100: or

more, hundreds digit, tens digit and ones digit are

displayed by turns.) (Example) When 105:; 0.5 secs. 0.5secs. 2 secs.

0~15

1 or 2 wOmit the figures after the decimal fractions.

Step

code

display

Compressor operating frequency 0~225

LEV-Aopening pulse 0~500

0~255 (When it is 100Hz or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 125Hz; 0.5 secs. 0.5secs. 2 secs.

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

.Hz

Pulse

SW2 setting

1ON23456

1ON23456 1ON23456

1ON23456

Code display

(Not Qj)

2 3 4 5 6 7 8

9 10 11

12 13

Rated

capacity

22 25 28 32 35 40 45 50 56 60

71 80

Display detail

LEV-B opening pulse 0~500

Explanation for display Unit

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

Pulse

LEV-C opening pulse 0~500

LEV-D opening pulse 0~500

LEV-E opening pulse 0~500

Capacity setting indoor-A 0~14

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

0~500 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns. (Example) When 150 pulse; 0.5 secs. 0.5secs. 2 secs.

Pulse

Code

display

Capacity setting indoor-B 0~14

Capacity setting indoor-C 0~14

Capacity setting indoor-D 0~14

Capacity setting indoor-E 0~14

Indoor pipe temperature / Liquid TH2 Indoor-A – 39~88

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

Code

display

Code

display

Code

display

Code

display

SW2 setting

1ON23456

Display detail

Indoor pipe temperature / Liquid TH2 Indoor-B – 35~88

Explanation for display

– 35~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

Unit

Indoor pipe temperature / Liquid TH2 Indoor-C – 39~88

Indoor pipe temperature / Liquid TH2 Indoor-D – 39~88

Indoor pipe temperature / Liquid TH2 Indoor-E – 39~88

LEV-1 opening pulse 0~500

LEV-2 opening pulse 0~500

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

0~500

Pulse

LEV-3 opening pulse 0~500

LEV-4 opening pulse 0~500

LEV-5 opening pulse 0~500

Outdoor pipe temperature / Cond./Eva. (TH6) – 39~88

Outdoor outside temperature (TH7) – 39~88

0~500

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

– 39~88 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.)

Pulse

1ON23456

SW2 setting

1ON23456

Display detail

Outdoor heatsink temperature (TH8) – 40~200

Explanation for display Unit

– 40~200 (When the temperature is 0: or less, “–” and

temperature are displayed by turns.) (When the thermistor detects 100: or more,

hundreds digit, tens digit and ones digit are

displayed by turns.)

1ON23456

LEV-6 opening pulse 0~500

LEV-7 opening pulse 0~500

LEV-8 opening pulse 0~500

High pressure o 10 (63HS) 0~500

Input current 0~50

0~500

0~500 (When it is 100 or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

0~50

Pulse

of/f

Indoor pipe temperature / Cond. / Eva. TH5 Indoor-A

Indoor pipe temperature / Cond. / Eva. TH5 Indoor-B

Indoor pipe temperature / Cond. / Eva. TH5 Indoor-C

Indoor pipe temperature / Cond. / Eva. TH5 Indoor-D

Indoor pipe temperature / Cond. / Eva. TH5 Indoor-E

– 39~88

SW2 setting

1ON23456

Display detail

Branch pipe temperature TH-A

Explanation for display Unit

– 39~88

1ON23456

Branch pipe temperature TH-B

Branch pipe temperature TH-C

Branch pipe temperature TH-D

Branch pipe temperature TH-E

TH1 Indoor-A 8~39

– 39~88

8~39

TH1 Indoor-B 8~39

TH1 Indoor-C 8~39

TH1 Indoor-D 8~39

TH1 Indoor-E 8~39

8~39

SW2 setting

1ON23456

Display detail

Indoor - setting temperature 16~31 Indoor-A

Explanation for display Unit

16~31

Indoor - setting temperature 16~31 Indoor-B

Indoor - setting temperature 16~31 Indoor-C

Indoor - setting temperature 16~31 Indoor-D

Indoor - setting temperature 16~31 Indoor-E

16~31

Mitsubishi Electric MXZ-8A140VA, MXZ-8A140VA3, PAC-AK50BC, PAC-AK30BC, MXZ-8A140VA1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual