Mitsubishi OB409C Service Manual

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SPLIT-TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Models

Revision C:

Information for SUZ-KA25VA(H)R1.TH and SUZ-

KA35VA(H)R1.TH has been added.

Please void OB409 REVISED EDITION-B.

No. OB409

REVISED EDITION-C

MFZ-KA25VA MFZ-KA25VA MFZ-KA25VA MFZ-KA35VA MFZ-KA35VA MFZ-KA35VA -

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

MFZ-KA50VA MFZ-KA50VA MFZ-KA50VA -

Outdoor unit service manual SUZ-KA•VA(H) Series (OC322) MXZ-A•VA Series (OB377, OC316)

CONTENTS

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

2. PART NAMES AND FUNCTIONS ····················· 3

3. SPECIFICATION ················································ 5

4. NOISE CRITERIA CURVES ······························ 7

5. OUTLINES AND DIMENSIONS ························ 8

6. WIRING DIAGRAM ············································ 9

7. REFRIGERANT SYSTEM DIAGRAM ············· 10

8. PERFORMANCE CURVES ····························· 10

9. SERVICE FUNCTIONS ··································· 21

10. TROUBLESHOOTING ····································· 23

11. DISASSEMBLY INSTRUCTIONS ···················· 37

12. PARTS LIST ····················································· 41

13. RoHS PARTS LIST ·········································· 45

14. OPTIONAL PARTS ·········································· 49

NOTE:

• This service manual describes technical data of the indoor units.

• RoHS compliant products have <G> mark on the spec name plate. For servicing of RoHS compliant products, refer to the RoHS Parts List.

Revision A:

• MFZ-KA25VA-E2, MFZ-KA35VA-

• “Failure mode recall function” has been corrected.

• RoHS PARTS LIST has been added.

and MFZ-KA50VA-

have been added.

Revision B:

• MFZ-KA25VA-E3, MFZ-KA35VA-

and MFZ-KA50VA-

have been added.

Revision C:

• Information for SUZ-KA25VA(H)R1.TH and SUZ-KA35VA(H)R1.TH has been added.

MFZ-KA25VA-E1 MFZ-KA25VAMFZ-KA35VA-E1 MFZ-KA35VAMFZ-KA50VA-E1 MFZ-KA50VA-

1. Operation of thermo-off-unit has been changed. (When 2 or more indoor units are connected with a multi type outdoor unit, and operated in heat mode.) < <

MFZ-KA25VA-E2 MFZ-KA25VAMFZ-KA35VA-E2 MFZ-KA35VAMFZ-KA50VA-E2 MFZ-KA50VA-

1. Control of auto fan speed has been changed. (When indoor units are connected with a multi type outdoor unit, and operated in heat mode.) Air flow in auto fan speed is changed depending on air outlet temperature of indoor unit.

TECHNICAL CHANGES

> Indoor fan operates with very Low speed or stops.

> Indoor fan operates intermittently with very Low speed or stops.

PART NAMES AND FUNCTIONS

INDOOR UNIT

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

Vertical vane

Air outlet

Horizontal vane

Panel

Catechin air filter

Air cleaning filter (Anti-Allergy Enzyme Filter, blue bellows type)

Damper

Air outlet

Vertical vane

Air inlet

Front grille

Fan guard

Remote controller

Display and operation section (When the front grille is opened)

Operation indicator lamp

Remote control

Emergency operation switch

Air outlet selection switch

receiving section

ACCESSORIES

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

REMOTE CONTROLLER

Signal transmitting section

Drain hose Remote controller holder Fixing screw for 3.5 x 1.6 mm (Black) Pipe cover Band Battery (AAA) for remote controller Indoor unit mounting bracket Fixing screw for 4 x 25 mm Wood screw for the indoor unit fixation Washer of Felt tape (Used for left or left-rear piping) Wireless remote controller Air cleaning filter

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

1 1 2 1 2 2 1 5 4 4 1 1 1

Operation display section

OPERATE/STOP (ON/OFF) button

Open the front lid.

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

RESET button

ra verall view.)

(This diagram shows an overall view.)

Temperature buttons

Indication of remote controller model is on back

i save button

OFF-TIMER button

ON-TIMER button

TIME SET buttons FORWARD button BACKWARD button

CLOCK SET button

VANE CONTROL button

Electrical

Fan motor

Special

NOTE: Test conditions are based on ISO 5151. Cooling: Indoor Dry-bulb temperature 27 Wet-bulb temperature 19 Outdoor Dry-bulb temperature 35 Wet-bulb temperature 24 Heating: Indoor Dry-bulb temperature 20 Wet-bulb temperature 15 Outdoor Dry-bulb temperature 7 Wet-bulb temperature 6 Refrigerant piping length (one way): 5 m 1 Measured under rated operating frequency.

SPECIFICATION

Indoor model MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

Function Cooling Heating Cooling Heating Cooling Heating

Power supply

Air ﬂ ow (Super High) m

Air ﬂ ow (High/Med./Low) m3/h 426/348/288 456/372/300 444/366/300 468/372/312 552/474/426 588/528/444

Breaker capacity A 10 10 10

Running current 1 A 0.2 0.2 0.2

Power input 1 W 25 25 25

data

Auxiliary heater A(kW) — — —

Power factor

Fan motor current 1 A 0.2 0.2 0.2

Model (Upper) RC0J30-GA RC0J30-GA RC0J30-GA

Model (Lower) RC0J30-HA RC0J30-HA RC0J30-HA

Dimensions W x H x D mm 700 x 600 x 200 700 x 600 x 200 700 x 600 x 200

Weight kg 14 14 14

Air direction 5 5 5

Sound level(Super High) dB(A) 37 38 43 44

Sound level(High/Med./Low) dB(A) 32/27/22 33/28/23 38/28/25 39/35/32

Fan speed(Super High) rpm 1,080 1,010 1,130 1,030 1,280 1,260

Fan speed(High/Med./Low) rpm 940/800/700 870/740/630 970/830/720 890/740/650

Upper

remarks

Fan speed(Super High) rpm 880 1,010 930 1,030 1,080 1,260

Fan speed(High/Med./Low) rpm 740/650/550 870/740/630 770/680/570 890/740/650

Lower

Fan speed regulator 4 4 4

Remote controller model KM05G KM05G KM05G

1 % 54 54 54

/h 522 546 546 570 642 708

Single phase 230 V, 50 Hz

1,140/1,020/940

940/820/740 1,070/930/850

1,070/930/850

Outdoor model

SUZ-KA25VA(H).TH

SUZ-KA25VA(H)R1.TH

Indoor model

MFZ-KA25VA

SUZ-KA35VA(H).TH

SUZ-KA35VA(H)R1.TH

Indoor model

MFZ-KA35VA

SUZ-KA50VA.TH

SUZ-KA50VA

1.TH

Indoor model

MFZ-KA50VA

SUZ-KA50VAR2.TH

Indoor model

MFZ-KA50VA

Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power supply

Single phase 230 V, 50 Hz

Capacity Rated frequency(Min.~Max.)kW2.5 (0.9 - 3.4) 3.4 (0.9 - 5.1) 3.5 (0.9 - 3.9) 4.0 (0.9 - 6.2) 4.8 (0.9 - 5.4) 6.0(0.9 - 7.9) 4.8 (0.9 - 5.4) 6.0(0.9 - 7.9)

Dehumidiﬁ cation /h 1.2 1.7 2.5 2.5

25VA(H).TH 35VA(H).TH

Air ﬂ ow(High/Low) m

25VA(H)R1.TH 35VA(H)R1.TH

2,940/1,650 2,940/2,210 2,940/1,650 2,940/2,210

1,890/1,746 2,058/1,506 1,896/1,668 1,956/1,356

1,806/1,806 2,106/1,452 1,872/1,086 2,016/1,386

Starting current 1 A 4.0 5.0 8.5 8.5

Compressor motor current

Fan motor current

Electrical

data

1 A 0.33 0.33 0.30 0.30

1 A 2.3 3.5 4.5 4.5 6.5 8.0 6.5 8.0

Coefﬁ cient of performance (C.O.P) 1 4.31 4.07 3.21 3.64 3.10 3.23 3.10 3.23

Model

25VA(H).TH

25VA(H)R1.TH

KNB073FDVH

KNB073FFDHC

35VA(H).TH

35VA(H)R1.TH

KNB092FCAH

KNB092FFAHC

SNB130FLDH or

SNB130FLDH1

SNB130FGBH

Output W 550 650 850 900

Winding

Compressor

resistance(at 20 ºC)

25VA(H).TH

25VA(H)R1.TH

U-V 1.53 UW 1.53 V-W 1.53

U-V 1.70 U-W 1.70 V-W 1.70

35VA(H).TH

35VA(H)R1.TH

U-V 0.49 U-W 0.49 V-W 0.49

U-V 1.91 U-W 1.91 V-W 1.91

U-V 0.45

U-W 0.45

V-W 0.45

U-V 0.45 U-W 0.45 V-W 0.45

Model RC0J50-AL RC0J50-AL RC0J60-AA RC0J60-AA

Winding

Fan

motor

resistance(at 20 ºC)

WHT-BLK 37.5 BLK-RED 37.5

RED-WHT 37.5

WHT-BLK 37.5 BLK-RED 37.5

RED-WHT 37.5

WHT-BLK 15.2 BLK-RED 15.2

RED-WHT 15.2

WHT-BLK 15.2 BLK-RED 15.2

RED-WHT 15.2

Dimensions W x H x D mm 800 x 550 x 285 800 x 550 x 285 840 x 850 x 330 840 x 850 x 330

Weight kg

25VA(H).TH

25VA(H)R1.TH

35VA(H).TH

35VA(H)R1.TH

53 53

Sound level 1 dB 46 47 48 53 55 53 55

25VA(H).TH 35VA(H).TH

Fan speed(High/Low, High/Med./Low)

810/750 880/810/650 840/760 880/800/630

rpm

25VA(H)R1.TH 35VA(H)R1.TH

800/480 800/650 780/480 780/620

740/740 860/740/600 810/490 870/770/610

Fan speed regulator 2 3 2 3 2 2

Special

remarks

Refrigerant ﬁ lling capacity (R410A)

Refrigerating oil (Model) cc

kg 0.90 1.05 1.60 1.60

320 (NEO22) 320 (NEO22)

FLDH: 450 (NEO22)

FLDH1: 600 (NEO22)

450 (NEO22)

Specifications and rating conditions of main electric parts

Item

Fuse

Damper lock motor Right

Damper lock motor Left

Horizontal vane motor

Damper motor

Varistor

Model

(ML1)

(ML2)

(MV1)

(MV2)

(NR11)

(F11)

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

T3.15AL 250 V

12 V 250 Ω

12 V 250 Ω or 12 V 300 Ω

12 V 300 Ω

ERZV14D471

NOISE CRITERIA CURVES

MFZ-KA25VA

FAN SPEED

Super High

Test conditions, Cooling : Dry-bulb temperature 27 °C Wet-bulb temperature 19 °C

Heating : Dry-bulb temperature 20 °C Wet-bulb temperature 15 °C

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

MFZ-KA35VA

FAN SPEED

Super High

Test conditions, Cooling : Dry-bulb temperature 27 °C Wet-bulb temperature 19 °C

Heating : Dry-bulb temperature 20 °C Wet-bulb temperature 15 °C

NC-70

NC-60

NC-50

NC-40

NC-30

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

MFZ-KA50VA

FAN SPEED

Super High

Test conditions, Cooling : Dry-bulb temperature 27 °C Wet-bulb temperature 19 °C

Heating : Dry-bulb temperature 20 °C Wet-bulb temperature 15 °C

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

NC-70

NC-60

NC-50

NC-40

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

INDOOR UNIT

MICROPHONE

WALL

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

NC-30

NC-20

OUTLINES AND DIMENSIONS

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

INDOOR UNIT

125

More than

100mm

700

607

46.5 46.5

More than 100mm

54 508 137

110

More than 100mm

600

Air out

Installation plate

Air in

123

drain

4- 6 Hole

Indoor unit

20012

118

128

363

Gas pipe 25, 35: 9.52(flared)3/8 50: 12.7(flared)1/2

Liquid pipe

6.35(flared)1/4

205

165

125

6019

Unit: mm

131131

333210

593

337 337

162

Wireless remote controller

147

454155

WIRING DIAGRAM

MFZ-KA25VAMFZ-KA35VAMFZ-KA50VA-

E1,E2

TO OUTDOOR UNIT CONNECTING

RT15

RT12

RT13

RT14

RT11

LS1

LS2

230V~

12-24V

1 2 3 4

1 2 3 4 5 6

111

1X1

1Y1

BLK WHT

WHT RED

DISP REC P.C.BOARD

CN CN

106

CN113

CN112

3 2

CN201

125

F11

NR11

3 2 1

MV1

CN202

ML1

MV2

151

DB111

LD103

GRN

ML2

152

MF1

1 2 3 4 5 6

CN211

T11

INDOOR ELECTRONIC

CONTROL P.C. BOARD

MF2

1 2 3 4 5 6

CN212

MFZ-KA25VAMFZ-KA35VAMFZ-KA50VA-

: Terminal block, : Connector

REFRIGERANT SYSTEM DIAGRAM

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

INDOOR UNIT

Indoor heat exchanger

Room temperature thermistor RT11

Refrigerant flow in cooling Refrigerant flow in heating

Indoor coil thermistor RT12 (main)

Distributor

Indoor coil thermistor RT12, RT14, RT15 (main) RT13 (sub)

Unit: mm

Refrigerant pipe 9.52 (MFZ-KA25/35VA) Refrigerant pipe 12.7 (MFZ-KA50VA) (with heat insulator)

Flared connection

Refrigerant pipe 6.35 (with heat insulator)

PERFORMANCE CURVES

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

The standard data contained in these specifications apply only to the operation of the air conditioner under normal condition. Operating conditions vary according to the areas where these units are installed. The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE (2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

COOLING (1) Indoor intake air wet-bulb temperature: W.B. ˚C (2) Indoor outlet air wet-bulb temperature: W.B. ˚C (3) Outdoor intake air dry-bulb temperature: D.B. ˚C (4) Total input: W

Indoor air wet/dry-bulb temperature difference on the side of the following chart shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

HEATING (1) Indoor intake air dry-bulb temperature: D.B. ˚C (2) Indoor outlet air dry-bulb temperature: D.B. ˚C (3) Outdoor intake air wet-bulb temperature: W.B. ˚C (4) Total input: W

How to measure the indoor air wet-bulb/dry-bulb temperature difference

1. Attach at least 2 sets of wet-and-dry-bulb thermometers to the indoor air inlet as shown in the figure, and at least 2 sets of wet-and-dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high.

2. Attach at least 2 sets of wet-and-dry-bulb thermometers to the outdoor air inlet.

Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of the room.

5. Press the EMERGENCY OPERATION switch once to start the COOL (HEAT) MODE.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

INDOOR UNIT

FRONT VIEW

Wet and dry-bulb thermometers

OUTDOOR UNIT

Wet-and dry-bulb thermometers

BACK VIEW

11.38.0

SUZ-KA25VA(H)R1.TH

Rated frequency 56.5Hz

SUZ-KA35VA(H)R1.TH

Rated frequency 75Hz

SUZ-KA50VA(1).TH

5.43.9

SUZ-KA25VA(H)R1.TH

Rated frequency 56.5Hz

SUZ-KA50VA(1).TH

SUZ-KA35VA(H)R1.TH

Rated frequency 75Hz

1.513.7

12.5

11.4

10.4

9.3

8.3

7.4

1.4

1.3

1.2

1.1

1.0

Capacity correction factors

0.9

-10-5 0 5 101520253035404546

SUZ-KA50VAR2.TH

Rated frequency 76Hz

Rated frequency 75Hz

11.4

10.4

9.3

8.3

7.4

1.3

1.2

1.1

1.0

0.9

0.86.5

Input correction factors

-10-5 0 5 101520253035404546

SUZ-KA50VAR2.TH

Rated frequency 76Hz

Rated frequency 75Hz

Cooling capacity

Total input (cooling)

20 18

Lower limit of guaranteed operating range in heating SUZ-KA25/35/50VA : -10 SUZ-KA25/35VAH : -20

Heating capacity

9.4

7.5

10.6

8.5

SUZ-KA25VA(H)R1.TH

Rated frequency 81Hz

SUZ-KA35VA(H)R1.TH

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

12.7

0.5

Capacity correction factor

10.1

0.4

).TH

SUZ-KA50VA(

Rated frequency 79Hz

SUZ-KA50VAR2.TH

Rated frequency 75.5Hz

Rated frequency 81Hz

-20 -15 -10 -5 0 5 10 15

NOTE: The above curves are for the heating operation without any frost.

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

Input correction factor

0.5

0.4

-20 -15 -10 -5 0 5 10 15

Total input(heating)

26 20 15

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

Correction of Cooling capacity

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

Correction of Cooling total input

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

Correction of Heating capacity

2.0

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

Correction of Heating total input

2.5

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

Correction of Cooling capacity

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA50VA(

1).TH

SUZ-KA50VAR2.TH

Correction of Cooling capacity

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

Correction of Cooling total input

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

Correction of Cooling total input

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

Correction of Heating capacity

2.0

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

Correction of Heating capacity

2.0

1.5

1.0

0.5

Capacity correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

Correction of Heating total input

2.5

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

Correction of Heating total input

2.5

2.0

1.5

1.0

0.5

Input correction factors

0.0 0 50 100 150(Hz)

The operational frequency of compressor

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

1. Press the EMERGENCY OPERATION switch or the Test button to COOL or HEAT mode.

2. Test run operation starts and continue to operate for 30 minutes.

3. Compressor starts at rated frequency in COOL mode or 58 Hz in HEAT mode.

4. Indoor fan operates at High speed.

5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts.

6. To cancel test run operation (EMERGENCY OPERATION), press the EMERGENCY OPERATION switch or the ON/OFF button on remote controller.

NOTE: The unit of pressure has been changed to MPa on the international system of units (SI unit system). The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/cm

[Gauge])

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOLING operation

Both indoor and outdoor unit are under the

same temperature/humidity condition.

Air flow: High speed Operational frequency : 57 Hz (SUZ-KA25VA(H).TH)

56.5 Hz (SUZ-KA25VA(H)R1.TH) 77 Hz (SUZ-KA35VA(H).TH) 75 Hz (SUZ-KA35VA(H)R1.TH) 75 Hz (SUZ-KA50VA(1).TH) 76 Hz (SUZ-KA50VAR2.TH)

Dry-bulb temperature

30 70

Relative humidity (%)

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

(kgf/cm

[Gauge])

1.4

1.2

1.0

0.8

0.6

Outdoor low pressure

0.4

0.2

Ambient temperature (°C) Ambient humidity (%)

(MPa [Gauge])

57 Hz (KA25VA(H))

56.5 Hz (KA25VA(H)R1)

15 2050256030

18 32

70 (%)

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

3.5

3.0

2.5

2.0

Outdoor unit current (A)

1.5 15 205025603070 35(°C)

Ambient temperature (°C) Ambient humidity (%)

57 Hz (KA25VA(H))

56.5 Hz (KA25VA(H)R1)

(%)

35(°C)

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

[Gauge])

(kgf/cm

Outdoor low pressure

Ambient temperature (°C) Ambient humidity (%)

(MPa [Gauge])

1.4

1.2

1.0

0.8

0.6

0.4

0.2 15 2050256030

77 Hz (KA35VA(H)) 75 Hz (KA35VA(H)R1)

18 32

70 (%)

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

5.0

4.5

4.0

3.5

Outdoor unit current (A)

3.0

15 20502560307035(°C)

Ambient temperature (°C) Ambient humidity (%)

77 Hz (KA35VA(H)) 75 Hz (KA35VA(H)R1)

35(°C)

(%)

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

[Gauge])

(kgf/cm

Outdoor low pressure

Ambient temperature (°C) Ambient humidity (%)

(MPa [Gauge])

1.4

1.2

1.0

0.8

0.6

0.4

0.2 15 2050256030

75 Hz (KA50VA 76 Hz (KA50VAR2)

18 32

(1))

70 (%)

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

7.0

6.5

6.0

5.5

5.0

Outdoor unit current (A)

4.5

15 20502560307035(°C)

Ambient temperature (°C) Ambient humidity (%)

75 Hz (KA50VA 76 Hz (KA50VAR2)

(1))

35(°C)

(%)

HEATING operation

Condition indoor: Dry bulb temperature 20.0 °C Wet bulb temperature 14.5 °C Condition outdoor: Dry bulb temperature 2,7,15,20.0 °C Wet bulb temperature 1,6,12,14.5 °C

SUZ-KA25VA(H).TH SUZ-KA25VA(H)R1.TH

3.0

2.5

2.0

Outdoor unit current (A)

1.5 2 5 10 15 20 25(°C)

Ambient temperature (°C)

58 Hz

SUZ-KA35VA(H).TH SUZ-KA35VA(H)R1.TH

4.5

4.0

3.5

Outdoor unit current (A)

3.0 2 5 10 15 20 25(°C)

Ambient temperature (°C)

58 Hz

SUZ-KA50VA(1).TH SUZ-KA50VAR2.TH

6.0

5.5

5.0

Outdoor unit current (A)

4.5 2 5 10 15 20 25(°C)

Ambient temperature (°C)

58 Hz

PERFORMANCE DATA COOLING operation MFZ-KA25VA/SUZ-KA25VA(H).TH Rated frequency 57Hz

SUZ-KA25VA(H)R1.TH Rated frequency 56.5Hz

CAPACITY : 2.5(kW) SHF : 0.66 INPUT : 580(W)

OUTDOOR DB(°C)

INDOOR INDOOR

DB(°C)

WB(°C)

Q SHC SHF Q SHC SHF Q SHC SHF Q SHC SHFINPUT INPUT INPUT INPUT

21 18 2.94 1.41 0.48 464 2.81 1.35 0.48 487 2.70 1.30 0.48 510 2.60 1.25 0.48 534

21 20 3.06 1.10 0.36 487 2.94 1.06 0.36 516 2.85 1.03 0.36 528 2.75 0.99 0.36 551 22 18 2.94 1.53 0.52 464 2.81 1.46 0.52 487 2.70 1.40 0.52 510 2.60 1.35 0.52 534 22 20 3.06 1.23 0.40 487 2.94 1.18 0.40 516 2.85 1.14 0.40 528 2.75 1.10 0.40 551 22 22 3.19 0.89 0.28 505 3.08 0.86 0.28 537 3.00 0.84 0.28 551 2.88 0.81 0.28 574 23 18 2.94 1.65 0.56 464 2.81 1.58 0.56 487 2.70 1.51 0.56 510 2.60 1.46 0.56 534 23 20 3.06 1.35 0.44 487 2.94 1.29 0.44 516 2.85 1.25 0.44 528 2.75 1.21 0.44 551 23 22 3.19 1.02 0.32 505 3.08 0.98 0.32 537 3.00 0.96 0.32 551 2.88 0.92 0.32 574 24 18 2.94 1.76 0.60 464 2.81 1.69 0.60 487 2.70 1.62 0.60 510 2.60 1.56 0.60 534 24 20 3.06 1.47 0.48 487 2.94 1.41 0.48 516 2.85 1.37 0.48 528 2.75 1.32 0.48 551 24 22 3.19 1.15 0.36 505 3.08 1.11 0.36 537 3.00 1.08 0.36 551 2.88 1.04 0.36 574 24 24 3.35 0.80 0.24 528 3.23 0.77 0.24 557 3.15 0.76 0.24 574 3.05 0.73 0.24 603 25 18 2.94 1.88 0.64 464 2.81 1.80 0.64 487 2.70 1.73 0.64 510 2.60 1.66 0.64 534 25 20 3.06 1.59 0.52 487 2.94 1.53 0.52 516 2.85 1.48 0.52 528 2.75 1.43 0.52 551 25 22 3.19 1.28 0.40 505 3.08 1.23 0.40 537 3.00 1.20 0.40 551 2.88 1.15 0.40 574 25 24 3.35 0.94 0.28 528 3.23 0.90 0.28 557 3.15 0.88 0.28 574 3.05 0.85 0.28 603 26 18 2.94 2.00 0.68 464 2.81 1.91 0.68 487 2.70 1.84 0.68 510 2.60 1.77 0.68 534 26 20 3.06 1.72 0.56 487 2.94 1.65 0.56 516 2.85 1.60 0.56 528 2.75 1.54 0.56 551 26 22 3.19 1.40 0.44 505 3.08 1.35 0.44 537 3.00 1.32 0.44 551 2.88 1.27 0.44 574 26 24 3.35 1.07 0.32 528 3.23 1.03 0.32 557 3.15 1.01 0.32 574 3.05 0.98 0.32 603 26 26 3.45 0.69 0.20 557 3.35 0.67 0.20 586 3.30 0.66 0.20 603 3.20 0.64 0.20 621 27 18 2.94 2.12 0.72 464 2.81 2.03 0.72 487 2.70 1.94 0.72 510 2.60 1.87 0.72 534 27 20 3.06 1.84 0.60 487 2.94 1.76 0.60 516 2.85 1.71 0.60 528 2.75 1.65 0.60 551 27 22 3.19 1.53 0.48 505 3.08 1.48 0.48 537 3.00 1.44 0.48 551 2.88 1.38 0.48 574 27 24 3.35 1.21 0.36 528 3.23 1.16 0.36 557 3.15 1.13 0.36 574 3.05 1.10 0.36 603 27 26 3.45 0.83 0.24 557 3.35 0.80 0.24 586 3.30 0.79 0.24 603 3.20 0.77 0.24 621 28 18 2.94 2.23 0.76 464 2.81 2.14 0.76 487 2.70 2.05 0.76 510 2.60 1.98 0.76 534 28 20 3.06 1.96 0.64 487 2.94 1.88 0.64 516 2.85 1.82 0.64 528 2.75 1.76 0.64 551 28 22 3.19 1.66 0.52 505 3.08 1.60 0.52 537 3.00 1.56 0.52 551 2.88 1.50 0.52 574 28 24 3.35 1.34 0.40 528 3.23 1.29 0.40 557 3.15 1.26 0.40 574 3.05 1.22 0.40 603 28 26 3.45 0.97 0.28 557 3.35 0.94 0.28 586 3.30 0.92 0.28 603 3.20 0.90 0.28 621 29 18 2.94 2.35 0.80 464 2.81 2.25 0.80 487 2.70 2.16 0.80 510 2.60 2.08 0.80 534 29 20 3.06 2.08 0.68 487 2.94 2.00 0.68 516 2.85 1.94 0.68 528 2.75 1.87 0.68 551 29 22 3.19 1.79 0.56 505 3.08 1.72 0.56 537 3.00 1.68 0.56 551 2.88 1.61 0.56 574 29 24 3.35 1.47 0.44 528 3.23 1.42 0.44 557 3.15 1.39 0.44 574 3.05 1.34 0.44 603 29 26 3.45 1.10 0.32 557 3.35 1.07 0.32 586 3.30 1.06 0.32 603 3.20 1.02 0.32 621 30 18 2.94 2.47 0.84 464 2.81 2.36 0.84 487 2.70 2.27 0.84 510 2.60 2.18 0.84 534 30 20 3.06 2.21 0.72 487 2.94 2.12 0.72 516 2.85 2.05 0.72 528 2.75 1.98 0.72 551 30 22 3.19 1.91 0.60 505 3.08 1.85 0.60 537 3.00 1.80 0.60 551 2.88 1.73 0.60 574 30 24 3.35 1.61 0.48 528 3.23 1.55 0.48 557 3.15 1.51 0.48 574 3.05 1.46 0.48 603 30 26 3.45 1.24 0.36 557 3.35 1.21 0.36 586 3.30 1.19 0.36 603 3.20 1.15 0.36 621 31 18 2.94 2.59 0.88 464 2.81 2.48 0.88 487 2.70 2.38 0.88 510 2.60 2.29 0.88 534 31 20 3.06 2.33 0.76 487 2.94 2.23 0.76 516 2.85 2.17 0.76 528 2.75 2.09 0.76 551 31 22 3.19 2.04 0.64 505 3.08 1.97 0.64 537 3.00 1.92 0.64 551 2.88 1.84 0.64 574 31 24 3.35 1.74 0.52 528 3.23 1.68 0.52 557 3.15 1.64 0.52 574 3.05 1.59 0.52 603 31 26 3.45 1.38 0.40 557 3.35 1.34 0.40 586 3.30 1.32 0.40 603 3.20 1.28 0.40 621 32 18 2.94 2.70 0.92 464 2.81 2.59 0.92 487 2.70 2.48 0.92 510 2.60 2.39 0.92 534 32 20 3.06 2.45 0.80 487 2.94 2.35 0.80 516 2.85 2.28 0.80 528 2.75 2.20 0.80 551 32 22 3.19 2.17 0.68 505 3.08 2.09 0.68 537 3.00 2.04 0.68 551 2.88 1.96 0.68 574 32 24 3.35 1.88 0.56 528 3.23 1.81 0.56 557 3.15 1.76 0.56 574 3.05 1.71 0.56 603 32 26 3.45 1.52 0.44 557 3.35 1.47 0.44 586 3.30 1.45 0.44 603 3.20 1.41 0.44 621

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

25 27 30

PERFORMANCE DATA COOLING operation MFZ-KA25VA/SUZ-KA25VA(H).TH Rated frequency 57Hz

SUZ-KA25VA(H)R1.TH Rated frequency 56.5Hz

CAPACITY : 2.5(kW) SHF : 0.66 INPUT : 580(W)

OUTDOOR DB(°C)

INDOOR INDOOR

DB (°C) WB (°C)

21 18 2.45 1.18 0.48 568 2.25 1.08 0.48 603 2.08 1.00 0.48 626 21 20 2.58 0.93 0.36 592 2.40 0.86 0.36 621 2.23 0.80 0.36 655 22 18 2.45 1.27 0.52 568 2.25 1.17 0.52 603 2.08 1.08 0.52 626 22 20 2.58 1.03 0.40 592 2.40 0.96 0.40 621 2.23 0.89 0.40 655 22 22 2.73 0.76 0.28 615 2.55 0.71 0.28 650 2.38 0.67 0.28 673 23 18 2.45 1.37 0.56 568 2.25 1.26 0.56 603 2.08 1.16 0.56 626 23 20 2.58 1.13 0.44 592 2.40 1.06 0.44 621 2.23 0.98 0.44 655 23 22 2.73 0.87 0.32 615 2.55 0.82 0.32 650 2.38 0.76 0.32 673 24 18 2.45 1.47 0.60 568 2.25 1.35 0.60 603 2.08 1.25 0.60 626 24 20 2.58 1.24 0.48 592 2.40 1.15 0.48 621 2.23 1.07 0.48 655 24 22 2.73 0.98 0.36 615 2.55 0.92 0.36 650 2.38 0.86 0.36 673 24 24 2.88 0.69 0.24 638 2.70 0.65 0.24 667 2.55 0.61 0.24 696 25 18 2.45 1.57 0.64 568 2.25 1.44 0.64 603 2.08 1.33 0.64 626 25 20 2.58 1.34 0.52 592 2.40 1.25 0.52 621 2.23 1.16 0.52 655 25 22 2.73 1.09 0.40 615 2.55 1.02 0.40 650 2.38 0.95 0.40 673 25 24 2.88 0.81 0.28 638 2.70 0.76 0.28 667 2.55 0.71 0.28 696 26 18 2.45 1.67 0.68 568 2.25 1.53 0.68 603 2.08 1.41 0.68 626 26 20 2.58 1.44 0.56 592 2.40 1.34 0.56 621 2.23 1.25 0.56 655 26 22 2.73 1.20 0.44 615 2.55 1.12 0.44 650 2.38 1.05 0.44 673 26 24 2.88 0.92 0.32 638 2.70 0.86 0.32 667 2.55 0.82 0.32 696 26 26 3.03 0.61 0.20 661 2.85 0.57 0.20 690 2.68 0.54 0.20 719 27 18 2.45 1.76 0.72 568 2.25 1.62 0.72 603 2.08 1.49 0.72 626 27 20 2.58 1.55 0.60 592 2.40 1.44 0.60 621 2.23 1.34 0.60 655 27 22 2.73 1.31 0.48 615 2.55 1.22 0.48 650 2.38 1.14 0.48 673 27 24 2.88 1.04 0.36 638 2.70 0.97 0.36 667 2.55 0.92 0.36 696 27 26 3.03 0.73 0.24 661 2.85 0.68 0.24 690 2.68 0.64 0.24 719 28 18 2.45 1.86 0.76 568 2.25 1.71 0.76 603 2.08 1.58 0.76 626 28 20 2.58 1.65 0.64 592 2.40 1.54 0.64 621 2.23 1.42 0.64 655 28 22 2.73 1.42 0.52 615 2.55 1.33 0.52 650 2.38 1.24 0.52 673 28 24 2.88 1.15 0.40 638 2.70 1.08 0.40 667 2.55 1.02 0.40 696 28 26 3.03 0.85 0.28 661 2.85 0.80 0.28 690 2.68 0.75 0.28 719 29 18 2.45 1.96 0.80 568 2.25 1.80 0.80 603 2.08 1.66 0.80 626 29 20 2.58 1.75 0.68 592 2.40 1.63 0.68 621 2.23 1.51 0.68 655 29 22 2.73 1.53 0.56 615 2.55 1.43 0.56 650 2.38 1.33 0.56 673 29 24 2.88 1.27 0.44 638 2.70 1.19 0.44 667 2.55 1.12 0.44 696 29 26 3.03 0.97 0.32 661 2.85 0.91 0.32 690 2.68 0.86 0.32 719 30 18 2.45 2.06 0.84 568 2.25 1.89 0.84 603 2.08 1.74 0.84 626 30 20 2.58 1.85 0.72 592 2.40 1.73 0.72 621 2.23 1.60 0.72 655 30 22 2.73 1.64 0.60 615 2.55 1.53 0.60 650 2.38 1.43 0.60 673 30 24 2.88 1.38 0.48 638 2.70 1.30 0.48 667 2.55 1.22 0.48 696 30 26 3.03 1.09 0.36 661 2.85 1.03 0.36 690 2.68 0.96 0.36 719 31 18 2.45 2.16 0.88 568 2.25 1.98 0.88 603 2.08 1.83 0.88 626 31 20 2.58 1.96 0.76 592 2.40 1.82 0.76 621 2.23 1.69 0.76 655 31 22 2.73 1.74 0.64 615 2.55 1.63 0.64 650 2.38 1.52 0.64 673 31 24 2.88 1.50 0.52 638 2.70 1.40 0.52 667 2.55 1.33 0.52 696 31 26 3.03 1.21 0.40 661 2.85 1.14 0.40 690 2.68 1.07 0.40 719 32 18 2.45 2.25 0.92 568 2.25 2.07 0.92 603 2.08 1.91 0.92 626 32 20 2.58 2.06 0.80 592 2.40 1.92 0.80 621 2.23 1.78 0.80 655 32 22 2.73 1.85 0.68 615 2.55 1.73 0.68 650 2.38 1.62 0.68 673 32 24 2.88 1.61 0.56 638 2.70 1.51 0.56 667 2.55 1.43 0.56 696 32 26 3.03 1.33 0.44 661 2.85 1.25 0.44 690 2.68 1.18 0.44 719

Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

35 40 46

PERFORMANCE DATA COOLING operation MFZ-KA35VA/SUZ-KA35(H)VA.TH Rated frequency 77Hz

SUZ-KA35VA(H)R1.TH Rated frequency 75Hz

CAPACITY : 3.5(kW) SHF : 0.65 INPUT : 1090(W)

OUTDOOR DB(°C)

INDOOR INDOOR

DB(°C)

WB(°C)

21 18 4.11 1.93 0.47 872 3.94 1.85 0.47 916 3.78 1.78 0.47 959 3.64 1.71 0.47 1003 21 20 4.29 1.50 0.35 916 4.11 1.44 0.35 970 3.99 1.40 0.35 992 3.85 1.35 0.35 1036 22 18 4.11 2.10 0.51 872 3.94 2.01 0.51 916 3.78 1.93 0.51 959 3.64 1.86 0.51 1003 22 20 4.29 1.67 0.39 916 4.11 1.60 0.39 970 3.99 1.56 0.39 992 3.85 1.50 0.39 1036 22 22 4.46 1.20 0.27 948 4.31 1.16 0.27 1008 4.20 1.13 0.27 1036 4.03 1.09 0.27 1079 23 18 4.11 2.26 0.55 872 3.94 2.17 0.55 916 3.78 2.08 0.55 959 3.64 2.00 0.55 1003 23 20 4.29 1.84 0.43 916 4.11 1.77 0.43 970 3.99 1.72 0.43 992 3.85 1.66 0.43 1036 23 22 4.46 1.38 0.31 948 4.31 1.33 0.31 1008 4.20 1.30 0.31 1036 4.03 1.25 0.31 1079 24 18 4.11 2.43 0.59 872 3.94 2.32 0.59 916 3.78 2.23 0.59 959 3.64 2.15 0.59 1003 24 20 4.29 2.02 0.47 916 4.11 1.93 0.47 970 3.99 1.88 0.47 992 3.85 1.81 0.47 1036 24 22 4.46 1.56 0.35 948 4.31 1.51 0.35 1008 4.20 1.47 0.35 1036 4.03 1.41 0.35 1079 24 24 4.69 1.08 0.23 992 4.52 1.04 0.23 1046 4.41 1.01 0.23 1079 4.27 0.98 0.23 1134 25 18 4.11 2.59 0.63 872 3.94 2.48 0.63 916 3.78 2.38 0.63 959 3.64 2.29 0.63 1003 25 20 4.29 2.19 0.51 916 4.11 2.10 0.51 970 3.99 2.03 0.51 992 3.85 1.96 0.51 1036 25 22 4.46 1.74 0.39 948 4.31 1.68 0.39 1008 4.20 1.64 0.39 1036 4.03 1.57 0.39 1079 25 24 4.69 1.27 0.27 992 4.52 1.22 0.27 1046 4.41 1.19 0.27 1079 4.27 1.15 0.27 1134 26 18 4.11 2.76 0.67 872 3.94 2.64 0.67 916 3.78 2.53 0.67 959 3.64 2.44 0.67 1003 26 20 4.29 2.36 0.55 916 4.11 2.26 0.55 970 3.99 2.19 0.55 992 3.85 2.12 0.55 1036 26 22 4.46 1.92 0.43 948 4.31 1.85 0.43 1008 4.20 1.81 0.43 1036 4.03 1.73 0.43 1079 26 24 4.69 1.45 0.31 992 4.52 1.40 0.31 1046 4.41 1.37 0.31 1079 4.27 1.32 0.31 1134 26 26 4.83 0.92 0.19 1046 4.69 0.89 0.19 1101 4.62 0.88 0.19 1134 4.48 0.85 0.19 1166 27 18 4.11 2.92 0.71 872 3.94 2.80 0.71 916 3.78 2.68 0.71 959 3.64 2.58 0.71 1003 27 20 4.29 2.53 0.59 916 4.11 2.43 0.59 970 3.99 2.35 0.59 992 3.85 2.27 0.59 1036 27 22 4.46 2.10 0.47 948 4.31 2.02 0.47 1008 4.20 1.97 0.47 1036 4.03 1.89 0.47 1079 27 24 4.69 1.64 0.35 992 4.52 1.58 0.35 1046 4.41 1.54 0.35 1079 4.27 1.49 0.35 1134 27 26 4.83 1.11 0.23 1046 4.69 1.08 0.23 1101 4.62 1.06 0.23 1134 4.48 1.03 0.23 1166 28 18 4.11 3.08 0.75 872 3.94 2.95 0.75 916 3.78 2.84 0.75 959 3.64 2.73 0.75 1003 28 20 4.29 2.70 0.63 916 4.11 2.59 0.63 970 3.99 2.51 0.63 992 3.85 2.43 0.63 1036 28 22 4.46 2.28 0.51 948 4.31 2.20 0.51 1008 4.20 2.14 0.51 1036 4.03 2.05 0.51 1079 28 24 4.69 1.83 0.39 992 4.52 1.76 0.39 1046 4.41 1.72 0.39 1079 4.27 1.67 0.39 1134 28 26 4.83 1.30 0.27 1046 4.69 1.27 0.27 1101 4.62 1.25 0.27 1134 4.48 1.21 0.27 1166 29 18 4.11 3.25 0.79 872 3.94 3.11 0.79 916 3.78 2.99 0.79 959 3.64 2.88 0.79 1003 29 20 4.29 2.87 0.67 916 4.11 2.76 0.67 970 3.99 2.67 0.67 992 3.85 2.58 0.67 1036 29 22 4.46 2.45 0.55 948 4.31 2.37 0.55 1008 4.20 2.31 0.55 1036 4.03 2.21 0.55 1079 29 24 4.69 2.02 0.43 992 4.52 1.94 0.43 1046 4.41 1.90 0.43 1079 4.27 1.84 0.43 1134 29 26 4.83 1.50 0.31 1046 4.69 1.45 0.31 1101 4.62 1.43 0.31 1134 4.48 1.39 0.31 1166 30 18 4.11 3.41 0.83 872 3.94 3.27 0.83 916 3.78 3.14 0.83 959 3.64 3.02 0.83 1003 30 20 4.29 3.04 0.71 916 4.11 2.92 0.71 970 3.99 2.83 0.71 992 3.85 2.73 0.71 1036 30 22 4.46 2.63 0.59 948 4.31 2.54 0.59 1008 4.20 2.48 0.59 1036 4.03 2.37 0.59 1079 30 24 4.69 2.20 0.47 992 4.52 2.12 0.47 1046 4.41 2.07 0.47 1079 4.27 2.01 0.47 1134 30 26 4.83 1.69 0.35 1046 4.69 1.64 0.35 1101 4.62 1.62 0.35 1134 4.48 1.57 0.35 1166 31 18 4.11 3.58 0.87 872 3.94 3.43 0.87 916 3.78 3.29 0.87 959 3.64 3.17 0.87 1003 31 20 4.29 3.22 0.75 916 4.11 3.08 0.75 970 3.99 2.99 0.75 992 3.85 2.89 0.75 1036 31 22 4.46 2.81 0.63 948 4.31 2.71 0.63 1008 4.20 2.65 0.63 1036 4.03 2.54 0.63 1079 31 24 4.69 2.39 0.51 992 4.52 2.30 0.51 1046 4.41 2.25 0.51 1079 4.27 2.18 0.51 1134 31 26 4.83 1.88 0.39 1046 4.69 1.83 0.39 1101 4.62 1.80 0.39 1134 4.48 1.75 0.39 1166 32 18 4.11 3.74 0.91 872 3.94 3.58 0.91 916 3.78 3.44 0.91 959 3.64 3.31 0.91 1003 32 20 4.29 3.39 0.79 916 4.11 3.25 0.79 970 3.99 3.15 0.79 992 3.85 3.04 0.79 1036 32 22 4.46 2.99 0.67 948 4.31 2.88 0.67 1008 4.20 2.81 0.67 1036 4.03 2.70 0.67 1079 32 24 4.69 2.58 0.55 992 4.52 2.48 0.55 1046 4.41 2.43 0.55 1079 4.27 2.35 0.55 1134 32 26 4.83 2.08 0.43 1046 4.69 2.02 0.43 1101 4.62 1.99 0.43 1134 4.48 1.93 0.43 1166

Q SHC SHF Q SHC SHF Q SHC SHF Q SHC SHFINPUT INPUT INPUT INPUT

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

25 27 30

PERFORMANCE DATA COOLING operation MFZ-KA35VA/SUZ-KA35(H)VA.TH Rated frequency 77Hz

SUZ-KA35VA(H)R1.TH Rated frequency 75Hz

CAPACITY : 3.5(kW) SHF : 0.65 INPUT : 1090(W)

OUTDOOR DB(°C)

INDOOR INDOOR

DB (°C) WB (°C)

Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT

21 18 3.43 1.61 0.47 1068 3.15 1.48 0.47 1134 2.91 1.37 0.47 1177

21 20 3.61 1.26 0.35 1112 3.36 1.18 0.35 1166 3.12 1.09 0.35 1232 22 18 3.43 1.75 0.51 1068 3.15 1.61 0.51 1134 2.91 1.48 0.51 1177 22 20 3.61 1.41 0.39 1112 3.36 1.31 0.39 1166 3.12 1.21 0.39 1232 22 22 3.82 1.03 0.27 1155 3.57 0.96 0.27 1221 3.33 0.90 0.27 1264 23 18 3.43 1.89 0.55 1068 3.15 1.73 0.55 1134 2.91 1.60 0.55 1177 23 20 3.61 1.55 0.43 1112 3.36 1.44 0.43 1166 3.12 1.34 0.43 1232 23 22 3.82 1.18 0.31 1155 3.57 1.11 0.31 1221 3.33 1.03 0.31 1264 24 18 3.43 2.02 0.59 1068 3.15 1.86 0.59 1134 2.91 1.71 0.59 1177 24 20 3.61 1.69 0.47 1112 3.36 1.58 0.47 1166 3.12 1.46 0.47 1232 24 22 3.82 1.34 0.35 1155 3.57 1.25 0.35 1221 3.33 1.16 0.35 1264 24 24 4.03 0.93 0.23 1199 3.78 0.87 0.23 1254 3.57 0.82 0.23 1308 25 18 3.43 2.16 0.63 1068 3.15 1.98 0.63 1134 2.91 1.83 0.63 1177 25 20 3.61 1.84 0.51 1112 3.36 1.71 0.51 1166 3.12 1.59 0.51 1232 25 22 3.82 1.49 0.39 1155 3.57 1.39 0.39 1221 3.33 1.30 0.39 1264 25 24 4.03 1.09 0.27 1199 3.78 1.02 0.27 1254 3.57 0.96 0.27 1308 26 18 3.43 2.30 0.67 1068 3.15 2.11 0.67 1134 2.91 1.95 0.67 1177 26 20 3.61 1.98 0.55 1112 3.36 1.85 0.55 1166 3.12 1.71 0.55 1232 26 22 3.82 1.64 0.43 1155 3.57 1.54 0.43 1221 3.33 1.43 0.43 1264 26 24 4.03 1.25 0.31 1199 3.78 1.17 0.31 1254 3.57 1.11 0.31 1308 26 26 4.24 0.80 0.19 1243 3.99 0.76 0.19 1297 3.75 0.71 0.19 1352 27 18 3.43 2.44 0.71 1068 3.15 2.24 0.71 1134 2.91 2.06 0.71 1177 27 20 3.61 2.13 0.59 1112 3.36 1.98 0.59 1166 3.12 1.84 0.59 1232 27 22 3.82 1.79 0.47 1155 3.57 1.68 0.47 1221 3.33 1.56 0.47 1264 27 24 4.03 1.41 0.35 1199 3.78 1.32 0.35 1254 3.57 1.25 0.35 1308 27 26 4.24 0.97 0.23 1243 3.99 0.92 0.23 1297 3.75 0.86 0.23 1352 28 18 3.43 2.57 0.75 1068 3.15 2.36 0.75 1134 2.91 2.18 0.75 1177 28 20 3.61 2.27 0.63 1112 3.36 2.12 0.63 1166 3.12 1.96 0.63 1232 28 22 3.82 1.95 0.51 1155 3.57 1.82 0.51 1221 3.33 1.70 0.51 1264 28 24 4.03 1.57 0.39 1199 3.78 1.47 0.39 1254 3.57 1.39 0.39 1308 28 26 4.24 1.14 0.27 1243 3.99 1.08 0.27 1297 3.75 1.01 0.27 1352 29 18 3.43 2.71 0.79 1068 3.15 2.49 0.79 1134 2.91 2.29 0.79 1177 29 20 3.61 2.42 0.67 1112 3.36 2.25 0.67 1166 3.12 2.09 0.67 1232 29 22 3.82 2.10 0.55 1155 3.57 1.96 0.55 1221 3.33 1.83 0.55 1264 29 24 4.03 1.73 0.43 1199 3.78 1.63 0.43 1254 3.57 1.54 0.43 1308 29 26 4.24 1.31 0.31 1243 3.99 1.24 0.31 1297 3.75 1.16 0.31 1352 30 18 3.43 2.85 0.83 1068 3.15 2.61 0.83 1134 2.91 2.41 0.83 1177 30 20 3.61 2.56 0.71 1112 3.36 2.39 0.71 1166 3.12 2.21 0.71 1232 30 22 3.82 2.25 0.59 1155 3.57 2.11 0.59 1221 3.33 1.96 0.59 1264 30 24 4.03 1.89 0.47 1199 3.78 1.78 0.47 1254 3.57 1.68 0.47 1308 30 26 4.24 1.48 0.35 1243 3.99 1.40 0.35 1297 3.75 1.31 0.35 1352 31 18 3.43 2.98 0.87 1068 3.15 2.74 0.87 1134 2.91 2.53 0.87 1177 31 20 3.61 2.70 0.75 1112 3.36 2.52 0.75 1166 3.12 2.34 0.75 1232 31 22 3.82 2.40 0.63 1155 3.57 2.25 0.63 1221 3.33 2.09 0.63 1264 31 24 4.03 2.05 0.51 1199 3.78 1.93 0.51 1254 3.57 1.82 0.51 1308 31 26 4.24 1.65 0.39 1243 3.99 1.56 0.39 1297 3.75 1.46 0.39 1352 32 18 3.43 3.12 0.91 1068 3.15 2.87 0.91 1134 2.91 2.64 0.91 1177 32 20 3.61 2.85 0.79 1112 3.36 2.65 0.79 1166 3.12 2.46 0.79 1232 32 22 3.82 2.56 0.67 1155 3.57 2.39 0.67 1221 3.33 2.23 0.67 1264 32 24 4.03 2.21 0.55 1199 3.78 2.08 0.55 1254 3.57 1.96 0.55 1308 32 26 4.24 1.82 0.43 1243 3.99 1.72 0.43 1297 3.75 1.61 0.43 1352

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

35 40 46

PERFORMANCE DATA COOLING operation MFZ-KA50VA/SUZ-KA50VA(

CAPACITY : 4.8(kW) SHF : 0.63 INPUT : 1550(W)

INDOOR INDOOR

DB(°C)

WB(°C)

21 18 5.64 2.54 0.45 1240 5.40 2.43 0.45 1302 5.18 2.33 0.45 1364 4.99 2.25 0.45 1426 21 20 5.88 1.94 0.33 1302 5.64 1.86 0.33 1380 5.47 1.81 0.33 1411 5.28 1.74 0.33 1473 22 18 5.64 2.76 0.49 1240 5.40 2.65 0.49 1302 5.18 2.54 0.49 1364 4.99 2.45 0.49 1426 22 20 5.88 2.18 0.37 1302 5.64 2.09 0.37 1380 5.47 2.02 0.37 1411 5.28 1.95 0.37 1473 22 22 6.12 1.53 0.25 1349 5.90 1.48 0.25 1434 5.76 1.44 0.25 1473 5.52 1.38 0.25 1535 23 18 5.64 2.99 0.53 1240 5.40 2.86 0.53 1302 5.18 2.75 0.53 1364 4.99 2.65 0.53 1426 23 20 5.88 2.41 0.41 1302 5.64 2.31 0.41 1380 5.47 2.24 0.41 1411 5.28 2.16 0.41 1473 23 22 6.12 1.77 0.29 1349 5.90 1.71 0.29 1434 5.76 1.67 0.29 1473 5.52 1.60 0.29 1535 24 18 5.64 3.21 0.57 1240 5.40 3.08 0.57 1302 5.18 2.95 0.57 1364 4.99 2.85 0.57 1426 24 20 5.88 2.65 0.45 1302 5.64 2.54 0.45 1380 5.47 2.46 0.45 1411 5.28 2.38 0.45 1473 24 22 6.12 2.02 0.33 1349 5.90 1.95 0.33 1434 5.76 1.90 0.33 1473 5.52 1.82 0.33 1535 24 24 6.43 1.35 0.21 1411 6.19 1.30 0.21 1488 6.05 1.27 0.21 1535 5.86 1.23 0.21 1612 25 18 5.64 3.44 0.61 1240 5.40 3.29 0.61 1302 5.18 3.16 0.61 1364 4.99 3.05 0.61 1426 25 20 5.88 2.88 0.49 1302 5.64 2.76 0.49 1380 5.47 2.68 0.49 1411 5.28 2.59 0.49 1473 25 22 6.12 2.26 0.37 1349 5.90 2.18 0.37 1434 5.76 2.13 0.37 1473 5.52 2.04 0.37 1535 25 24 6.43 1.61 0.25 1411 6.19 1.55 0.25 1488 6.05 1.51 0.25 1535 5.86 1.46 0.25 1612 26 18 5.64 3.67 0.65 1240 5.40 3.51 0.65 1302 5.18 3.37 0.65 1364 4.99 3.24 0.65 1426 26 20 5.88 3.12 0.53 1302 5.64 2.99 0.53 1380 5.47 2.90 0.53 1411 5.28 2.80 0.53 1473 26 22 6.12 2.51 0.41 1349 5.90 2.42 0.41 1434 5.76 2.36 0.41 1473 5.52 2.26 0.41 1535 26 24 6.43 1.87 0.29 1411 6.19 1.80 0.29 1488 6.05 1.75 0.29 1535 5.86 1.70 0.29 1612 26 26 6.62 1.13 0.17 1488 6.43 1.09 0.17 1566 6.34 1.08 0.17 1612 6.14 1.04 0.17 1659 27 18 5.64 3.89 0.69 1240 5.40 3.73 0.69 1302 5.18 3.58 0.69 1364 4.99 3.44 0.69 1426 27 20 5.88 3.35 0.57 1302 5.64 3.21 0.57 1380 5.47 3.12 0.57 1411 5.28 3.01 0.57 1473 27 22 6.12 2.75 0.45 1349 5.90 2.66 0.45 1434 5.76 2.59 0.45 1473 5.52 2.48 0.45 1535 27 24 6.43 2.12 0.33 1411 6.19 2.04 0.33 1488 6.05 2.00 0.33 1535 5.86 1.93 0.33 1612 27 26 6.62 1.39 0.21 1488 6.43 1.35 0.21 1566 6.34 1.33 0.21 1612 6.14 1.29 0.21 1659 28 18 5.64 4.12 0.73 1240 5.40 3.94 0.73 1302 5.18 3.78 0.73 1364 4.99 3.64 0.73 1426 28 20 5.88 3.59 0.61 1302 5.64 3.44 0.61 1380 5.47 3.34 0.61 1411 5.28 3.22 0.61 1473 28 22 6.12 3.00 0.49 1349 5.90 2.89 0.49 1434 5.76 2.82 0.49 1473 5.52 2.70 0.49 1535 28 24 6.43 2.38 0.37 1411 6.19 2.29 0.37 1488 6.05 2.24 0.37 1535 5.86 2.17 0.37 1612 28 26 6.62 1.66 0.25 1488 6.43 1.61 0.25 1566 6.34 1.58 0.25 1612 6.14 1.54 0.25 1659 29 18 5.64 4.34 0.77 1240 5.40 4.16 0.77 1302 5.18 3.99 0.77 1364 4.99 3.84 0.77 1426 29 20 5.88 3.82 0.65 1302 5.64 3.67 0.65 1380 5.47 3.56 0.65 1411 5.28 3.43 0.65 1473 29 22 6.12 3.24 0.53 1349 5.90 3.13 0.53 1434 5.76 3.05 0.53 1473 5.52 2.93 0.53 1535 29 24 6.43 2.64 0.41 1411 6.19 2.54 0.41 1488 6.05 2.48 0.41 1535 5.86 2.40 0.41 1612 29 26 6.62 1.92 0.29 1488 6.43 1.87 0.29 1566 6.34 1.84 0.29 1612 6.14 1.78 0.29 1659 30 18 5.64 4.57 0.81 1240 5.40 4.37 0.81 1302 5.18 4.20 0.81 1364 4.99 4.04 0.81 1426 30 20 5.88 4.06 0.69 1302 5.64 3.89 0.69 1380 5.47 3.78 0.69 1411 5.28 3.64 0.69 1473 30 22 6.12 3.49 0.57 1349 5.90 3.37 0.57 1434 5.76 3.28 0.57 1473 5.52 3.15 0.57 1535 30 24 6.43 2.89 0.45 1411 6.19 2.79 0.45 1488 6.05 2.72 0.45 1535 5.86 2.64 0.45 1612 30 26 6.62 2.19 0.33 1488 6.43 2.12 0.33 1566 6.34 2.09 0.33 1612 6.14 2.03 0.33 1659 31 18 5.64 4.79 0.85 1240 5.40 4.59 0.85 1302 5.18 4.41 0.85 1364 4.99 4.24 0.85 1426 31 20 5.88 4.29 0.73 1302 5.64 4.12 0.73 1380 5.47 3.99 0.73 1411 5.28 3.85 0.73 1473 31 22 6.12 3.73 0.61 1349 5.90 3.60 0.61 1434 5.76 3.51 0.61 1473 5.52 3.37 0.61 1535 31 24 6.43 3.15 0.49 1411 6.19 3.03 0.49 1488 6.05 2.96 0.49 1535 5.86 2.87 0.49 1612 31 26 6.62 2.45 0.37 1488 6.43 2.38 0.37 1566 6.34 2.34 0.37 1612 6.14 2.27 0.37 1659 32 18 5.64 5.02 0.89 1240 5.40 4.81 0.89 1302 5.18 4.61 0.89 1364 4.99 4.44 0.89 1426 32 20 5.88 4.53 0.77 1302 5.64 4.34 0.77 1380 5.47 4.21 0.77 1411 5.28 4.07 0.77 1473 32 22 6.12 3.98 0.65 1349 5.90 3.84 0.65 1434 5.76 3.74 0.65 1473 5.52 3.59 0.65 1535 32 24 6.43 3.41 0.53 1411 6.19 3.28 0.53 1488 6.05 3.21 0.53 1535 5.86 3.10 0.53 1612 32 26 6.62 2.72 0.41 1488 6.43 2.64 0.41 1566 6.34 2.60 0.41 1612 6.14 2.52 0.41 1659

Q SHC SHF Q SHC SHF Q SHC SHF Q SHC SHFINPUT INPUT INPUT INPUT

1).TH Rated frequency 75Hz SUZ-KA50VAR2.TH Rated frequency 76Hz

OUTDOOR DB(°C)

25 27 30

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

PERFORMANCE DATA COOLING operation MFZ-KA50VA/SUZ-KA50VA(

CAPACITY : 4.8(kW) SHF : 0.63 INPUT : 1550(W)

INDOOR INDOOR DB (°C) WB (°C)

21 18 4.70 2.12 0.45 1519 4.32 1.94 0.45 1612 3.98 1.79 0.45 1674

21 20 4.94 1.63 0.33 1581 4.61 1.52 0.33 1659 4.27 1.41 0.33 1752 22 18 4.70 2.30 0.49 1519 4.32 2.12 0.49 1612 3.98 1.95 0.49 1674 22 20 4.94 1.83 0.37 1581 4.61 1.70 0.37 1659 4.27 1.58 0.37 1752 22 22 5.23 1.31 0.25 1643 4.90 1.22 0.25 1736 4.56 1.14 0.25 1798 23 18 4.70 2.49 0.53 1519 4.32 2.29 0.53 1612 3.98 2.11 0.53 1674 23 20 4.94 2.03 0.41 1581 4.61 1.89 0.41 1659 4.27 1.75 0.41 1752 23 22 5.23 1.52 0.29 1643 4.90 1.42 0.29 1736 4.56 1.32 0.29 1798 24 18 4.70 2.68 0.57 1519 4.32 2.46 0.57 1612 3.98 2.27 0.57 1674 24 20 4.94 2.22 0.45 1581 4.61 2.07 0.45 1659 4.27 1.92 0.45 1752 24 22 5.23 1.73 0.33 1643 4.90 1.62 0.33 1736 4.56 1.50 0.33 1798 24 24 5.52 1.16 0.21 1705 5.18 1.09 0.21 1783 4.90 1.03 0.21 1860 25 18 4.70 2.87 0.61 1519 4.32 2.64 0.61 1612 3.98 2.43 0.61 1674 25 20 4.94 2.42 0.49 1581 4.61 2.26 0.49 1659 4.27 2.09 0.49 1752 25 22 5.23 1.94 0.37 1643 4.90 1.81 0.37 1736 4.56 1.69 0.37 1798 25 24 5.52 1.38 0.25 1705 5.18 1.30 0.25 1783 4.90 1.22 0.25 1860 26 18 4.70 3.06 0.65 1519 4.32 2.81 0.65 1612 3.98 2.59 0.65 1674 26 20 4.94 2.62 0.53 1581 4.61 2.44 0.53 1659 4.27 2.26 0.53 1752 26 22 5.23 2.15 0.41 1643 4.90 2.01 0.41 1736 4.56 1.87 0.41 1798 26 24 5.52 1.60 0.29 1705 5.18 1.50 0.29 1783 4.90 1.42 0.29 1860 26 26 5.81 0.99 0.17 1767 5.47 0.93 0.17 1845 5.14 0.87 0.17 1922 27 18 4.70 3.25 0.69 1519 4.32 2.98 0.69 1612 3.98 2.75 0.69 1674 27 20 4.94 2.82 0.57 1581 4.61 2.63 0.57 1659 4.27 2.44 0.57 1752 27 22 5.23 2.35 0.45 1643 4.90 2.20 0.45 1736 4.56 2.05 0.45 1798 27 24 5.52 1.82 0.33 1705 5.18 1.71 0.33 1783 4.90 1.62 0.33 1860 27 26 5.81 1.22 0.21 1767 5.47 1.15 0.21 1845 5.14 1.08 0.21 1922 28 18 4.70 3.43 0.73 1519 4.32 3.15 0.73 1612 3.98 2.91 0.73 1674 28 20 4.94 3.02 0.61 1581 4.61 2.81 0.61 1659 4.27 2.61 0.61 1752 28 22 5.23 2.56 0.49 1643 4.90 2.40 0.49 1736 4.56 2.23 0.49 1798 28 24 5.52 2.04 0.37 1705 5.18 1.92 0.37 1783 4.90 1.81 0.37 1860 28 26 5.81 1.45 0.25 1767 5.47 1.37 0.25 1845 5.14 1.28 0.25 1922 29 18 4.70 3.62 0.77 1519 4.32 3.33 0.77 1612 3.98 3.07 0.77 1674 29 20 4.94 3.21 0.65 1581 4.61 3.00 0.65 1659 4.27 2.78 0.65 1752 29 22 5.23 2.77 0.53 1643 4.90 2.59 0.53 1736 4.56 2.42 0.53 1798 29 24 5.52 2.26 0.41 1705 5.18 2.13 0.41 1783 4.90 2.01 0.41 1860 29 26 5.81 1.68 0.29 1767 5.47 1.59 0.29 1845 5.14 1.49 0.29 1922 30 18 4.70 3.81 0.81 1519 4.32 3.50 0.81 1612 3.98 3.23 0.81 1674 30 20 4.94 3.41 0.69 1581 4.61 3.18 0.69 1659 4.27 2.95 0.69 1752 30 22 5.23 2.98 0.57 1643 4.90 2.79 0.57 1736 4.56 2.60 0.57 1798 30 24 5.52 2.48 0.45 1705 5.18 2.33 0.45 1783 4.90 2.20 0.45 1860 30 26 5.81 1.92 0.33 1767 5.47 1.81 0.33 1845 5.14 1.69 0.33 1922 31 18 4.70 4.00 0.85 1519 4.32 3.67 0.85 1612 3.98 3.39 0.85 1674 31 20 4.94 3.61 0.73 1581 4.61 3.36 0.73 1659 4.27 3.12 0.73 1752 31 22 5.23 3.19 0.61 1643 4.90 2.99 0.61 1736 4.56 2.78 0.61 1798 31 24 5.52 2.70 0.49 1705 5.18 2.54 0.49 1783 4.90 2.40 0.49 1860 31 26 5.81 2.15 0.37 1767 5.47 2.02 0.37 1845 5.14 1.90 0.37 1922 32 18 4.70 4.19 0.89 1519 4.32 3.84 0.89 1612 3.98 3.55 0.89 1674 32 20 4.94 3.81 0.77 1581 4.61 3.55 0.77 1659 4.27 3.29 0.77 1752 32 22 5.23 3.40 0.65 1643 4.90 3.18 0.65 1736 4.56 2.96 0.65 1798 32 24 5.52 2.93 0.53 1705 5.18 2.75 0.53 1783 4.90 2.59 0.53 1860 32 26 5.81 2.38 0.41 1767 5.47 2.24 0.41 1845 5.14 2.11 0.41 1922

Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT

1).TH Rated frequency 75Hz SUZ-KA50VAR2.TH Rated frequency 76Hz

OUTDOOR DB(°C)

35 40 46

NOTE Q : Total capacity (kW) SHF : Sensible heat factor DB : Dry-bulb temperature

SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature

PERFORMANCE DATA HEATING operation MFZ-KA25VA/SUZ-KA25VA(H).TH Rated frequency 80Hz SUZ-KA25VA(H)R1.TH Rated frequency 81Hz

CAPACITY : 3.4(kW) INPUT : 835(W)

OUTDOOR WB(°C)

INDOOR

DB(°C)

15 21 26

-10

Q INPUT-5Q INPUT0Q INPUT5Q INPUT10Q INPUT15Q INPUT20Q INPUT

885

4.76

868

4.32

843

3.91

793

3.47

2.14

2.04

1.84

534 585 626

2.58

2.45

2.28

651 693 735

3.03

2.89

2.69

735 768 810

3.30

3.13

827 868

3.74

3.57

868 910

4.15

3.98

893 935

4.57

4.42

927 960

MFZ-KA35VA/SUZ-KA35VA(H).TH Rated frequency 74Hz SUZ-KA35VA(H)R1.TH Rated frequency 75.5Hz

CAPACITY : 4.0(kW) INPUT : 1100(W)

OUTDOOR WB(°C)

INDOOR

DB(°C)

15 21 26

-10

Q INPUT-5Q INPUT0Q INPUT5Q INPUT10Q INPUT15Q INPUT20Q INPUT

2.52 715 3.04 858 3.56 968 4.08 1045 4.60 1111 5 .08 1144 5.60 1166

2.40 770 2.88 913 3.40 1012 3.88 1089 4.40 1144 4.88 1177 5.38 1221

2.16 825 2.68 968 3.16 1067 3.68 1144 4.20 1199 4.68 1232 5.20 1265

MFZ-KA50VA/SUZ-KA50VA(1).TH Rated frequency 79Hz SUZ-KA50VAR2.TH Rated frequency 81Hz

CAPACITY : 6.0(kW) INPUT : 1860(W)

OUTDOOR WB(°C)

INDOOR

DB(°C)

15 21 26

-10

Q INPUT-5Q INPUT0Q INPUT5Q INPUT10Q INPUT15Q INPUT20Q INPUT

1972

3.78

3.60

3.24

1209 1302 1395

4.56

4.32

4.02

1451 1544 1637

5.34

5.10

4.74

1637

1711

1804

6.12

5.82

5.52

1767 1841 1934

6.90

6.60

6.30

1879 1934 2027

7.62

7.32

7.02

1934 1990 2083

8.40

8.07

7.80

2065 2139

NOTE : Q :Total capacity (kW) INPUT :Total power input (W) DB: Dry-bulb temperature WB: Wet-bulb temperature

SERVICE FUNCTIONS

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

9-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. (Refer to 10-7.) Set time: 1-minute Set time: 3-minute 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit-of JPG and JPS.)

9-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor unit individually by each remote controller, both the P.C. boards of remote controller

and the electronic control P.C. boards must be modified according to the number of the indoor unit.

How to modify the remote controller P.C. board

Remove batteries before modification. The board has a print as shown below :

Remote controller model: KM05G

1-second

NOTE: For modification, take out the batter-

ies and push the OPERATE/STOP (ON/OFF) button 2 or 3 times at first.

After finish modification, put back

the batteries then press the RESET button.

The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1. After modification, press the RESET button.

Table 1

3 units operation

Same as at left

Solder J2

–

No. 1 unit

No. 2 unit

No. 3 unit

No. 4 unit

1 unit operation

No modification

–

2 units operation

Same as at left

Solder J1

–

How to modify the electronic control P.C. board

Turn OFF the power supply before modification. Cut off “JR05” and “JR06” on the electronic control P.C. board according to the number of indoor unit as shown in Table 2. (Refer to 10-7.)

4 units operation

Same as at left

Solder both J1 and J2

Table 2

Indoor electronic control P.C. Board

No. 1 unit

No. 2 unit

No. 3 unit

No. 4 unit

JR05

No modification

Cut off JR05

No modification

Cut off JR05

JR06

No modification

Cut off JR06

Fuse (F11)

VARISTOR (NR11)

R111

C111

T11

JR05

IC101

CN1X1

JR06

CN1Y1

CN151 CN152 CN211 CN212

NOTE: After modification, turn ON the power supply and with the remote controller headed towards the indoor unit, press the

OPERATE/STOP (ON/OFF) button. If 1 or 2 beeps is heard from the indoor unit, modification is completed correctly.

9-3. AUTO RESTART FUNCTION

When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed

are memorized by the indoor electronic control P.C. board. The “AUTO RESTART FUNCTION” sets to work the moment power is restored after power failure. Then, the unit will restart automatically.

Operation

If the main power has been cut, the operation settings remain. After the power is restored, the unit restarts automatically according to the memory.

(However, it takes at least 3 minutes

for the compressor to start running.)

How to release “AUTO RESTART FUNCTION”

Turn off the main power for the unit. Solder the Jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 10-7.)

F11

CN111 CN112 CN113

CN106

JR07

C111

IC101

T11

CN125

CN151

CN152

CN211

CN212

NOTE:

• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote

controller.

• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is

cancelled.

• If the unit has been turned OFF with the remote controller before power failure, the auto restart function does not work

as the power button of the remote controller is OFF.

• To prevent breaker tripping due to the rush of starting current, systematize other home appliance not to turn ON at the

same time.

• When some air conditioners are connected to the same supply system, if they are operated before power failure, the

starting current of all the compressors may flow simultaneously at restart. Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current by adding to the system that allows the units to start one by one.

2222

TROUBLESHOOTING

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

10-1. CAUTIONS ON TROUBLESHOOTING

1. Before troubleshooting, check the following:

1) Check the power supply voltage.

2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care of the following during servicing.

1) Before servicing the air conditioner, be sure to turn OFF the unit first with the remote controller, and then after

confirming the horizontal vane is closed, turn OFF the breaker and / or disconnect the power plug.

2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the

electronic control P.C. board.

3) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the

components.

4) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

Lead wiring

3. Troubleshooting procedure

1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing ON and OFF to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing ON and OFF before starting service work.

2) Before servicing, check that the connector and terminal are connected properly.

3) When the electronic control P.C. board seems to be defective, check the copper foil pattern for disconnection and the components for bursting and discoloration.

4) When troubleshooting, refer to 10-2, 10-3 and 10-4.

4. How to replace batteries

Weak batteries may cause the remote controller malfunction. In this case, replace the batteries to operate the remote controller normally.

Remove the front lid and insert batteries.

Then reattach the front lid.

Insert the negative pole of the batteries first. Check if the polarity of the batteries is correct.

NOTE: 1. If RESET button is not pressed, the remote controller may not operate correctly.

2. This remote controller has a circuit to automatically reset the microcomputer when batteries are replaced. This function is equipped to prevent the microcomputer from malfunctioning due to the voltage drop caused by the battery replacement.

Housing point

Press RESET button with tip end of ball point pen

or the like, and then use the remote controller.

RESET button

INFORMATION FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit.

•Unit won’t operate in case the total capacity of indoor units exceeds the capacity of outdoor units. Do not connect indoor units beyond the outdoor unit capacity. Operation indicator lamp flashes as shown in the figure below.

•When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the other for heating, the operation mode of the indoor unit that operates earlier is selected. The other indoor units will start the operation later cannot operate, indicating as shown in the figure below. In this case, please set all the indoor units to the same operation mode.

OPERATION INDICATOR

•When indoor units start operation while the defrosting of outdoor unit is being done, it takes a few minutes (max. 10

minutes) to blow out the warm air.

•In heating operation, even though the indoor unit is not in operation, the room may get warm or the sound of refriger-

ant flowing may be heard. This is not a malfunction. The refrigerant continuously flowing into it causes this.

Lighted

Blinking

Not lighted

(Green)

(Green or Orange)

Blinking green : Standby for normal operation Blinking orange : Standby for i-save operation

10-2. FAILURE MODE RECALL FUNCTION

Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though OPERATION INDICATOR lamp indication listed on the troubleshooting check table (10-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which does not recur.

1. Flow chart of failure mode recall function for the indoor/outdoor unit

Operational procedure

The cause of abnormality cannot be found because the abnormality does not recur.

Setting up the failure mode recall function

Turn ON the power supply. While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time, press RESET button. First, release RESET button. And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds.

Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1

While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time, press RESET button. First, release RESET button. And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds.

1. Regardless of normal or abnormal, a short beep is emitted once as the signal is received.

Does the left lamp of OPERATION INDICATOR lamp on the indoor unit blink at the interval of 0.5 seconds? Blinks: Either indoor or outdoor unit is abnormal. Beep are emitted at the same timing as the blinking of the left lamp of OPERATION INDICATOR lamp. 2

Judgment of indoor/outdoor abnormality

Before blinking, does the left lamp of OPERATION INDICATOR lamp stay ON for 3 seconds? Stays ON for 3 seconds (without beep): The outdoor unit is abnormal.

The indoor unit is abnormal. Check the blinking pattern, and confirm the abnormal point with the indoor unit failure mode table (10-2. 2.). Make sure to check at least two consecutive blinking cycles. 2

Releasing the failure mode recall function

Release the failure mode recall function by the following procedures. Turn OFF the power supply and turn it ON again. Press RESET button of the remote controller.

Repair the defective parts.

Deleting the abnormal memorized condition

After repairing the unit, recall the failure mode again according to "Setting up the failure mode recall function" mentioned above. Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1 Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted. Release the failure mode recall function according to "Releasing the failure mode recall function" mentioned above.

Note1.Make sure to release the failure mode recall function once it is set up, otherwise the unit cannot operate properly.

2.If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.

2. Blinking pattern when the indoor unit is abnormal:

Blinking at 0.5-

2.5-second OFF

OFF

3.Blinking pattern when the outdoor unit is abnormal:

2.5-second OFF 3-second ON

OFF

second interval

Repeated cycle Repeated cycle

Beeps

Yes

(Blinks)

2.5-second OFF

Blinking at 0.5second interval

No beep Beeps

Repeated cycle

Blinking at 0.5second interval

(OFF)

Yes

Beeps

2.5-second OFF 3-second ON

Indoor unit is normal. But the outdoor unit might be abnormal because there are some abnormalities that are not memorized in the indoor unit. Confirm if outdoor unit is abnormal according to the flow chart of the detailed outdoor unit failure mode recall function.

The outdoor unit is abnormal. Check the blinking pattern, and confirm the abnormal point with the outdoor unit failure mode table (Refer to outdoor unit service manual). Make sure to check at least two consecutive blinking cycles. 3

As for outdoor unit, refer to outdoor unit service manual.

Beeps

Repeated cycle

No beep Beeps

Repeated cycle

Blinking at 0.5second interval

Repeated cycle

2. Indoor unit failure mode table NOTE: Blinking patterns of this mode differs from the ones of Troubleshooting check table (10-4.).

Left lamp of

OPERATION

INDICATOR lamp

Not lighted –Normal –

1-time flash every 0.5-second

2-time flash

2.5-second OFF

3-time flash

2.5-second OFF

11-time flash

2.5-second OFF

12-time flash

2.5-second OFF

13-time flash

2.5-second OFF

14-time flash

2.5-second OFF

Right lamp of OPERATION

INDICATOR lamp

Not lighted

1-time flash every 0.5-second

Not lighted

Abnormal point (Failure mode)

Room temperature thermistor

Indoor coil thermistor (Main 1, 2 and sub)

Serial signal error

Indoor fan motor (Upper)

Indoor fan motor (Lower)

Indoor control system

Indoor coil thermistor (Main 3)

Damper

When the room temperature thermistor short or open circuit is detected every 8 seconds during operation.

When the indoor coil thermistor short or open circuit is detected every 8 seconds during operation.

When the serial signal from the outdoor unit is not received for a maximum of 6 minutes.

When the rotational frequency feedback signal is not emitted during 12-second the indoor fan operation.

When it cannot be read properly data in the nonvolatile memory of the indoor electronic control P.C. board.

When the indoor coil thermistor short or open circuit is detected every 8 seconds during operation.

When the damper is not located at the designated position.

Check point

Countermeasure

Refer to the characteristics of the room temperature thermistor (10-7.).

Refer to the characteristic of the main 1,2 indoor coil thermistor and the sub indoor coil thermistor (10-7.).

Refer to 10-6. "How to check miswiring and serial signal error".

Refer to 10-6 -1 "Check of indoor fan motor (Upper)"

Refer to 10-6 -2 "Check of indoor fan motor (Lower)"

Replace the indoor electronic control P.C. board.

Replace to the characteristic of the main 3 indoor coil thermistor (10-7.).

Refer to 10-6. "Check of damper".

10-3. INSTRUCTION OF TROUBLESHOOTING

Start

Indoor unit operates. Outdoor unit does not operate.

Outdoor unit operates only in Test Run operation.

Check room temperature thermistor. Refer to 10-7. "Test point diagram and voltage".

Indoor unit operates. Outdoor unit does not operate normally.

Outdoor unit does not operate even in Test Run operation.

Refer to "How to check inverter/ compressor".

Unit does not operate normal operation in COOL or HEAT mode.

Refer to "Check of R.V. coil".

Indoor unit does not receive the signal from remote controller.

Indoor unit operates, when EMERGENCY OPERATION switch is pressed.

Refer to 10-6. "Check of remote controller and receiver P.C. board".

OPERATION INDICATOR lamp on the indoor unit is flashing ON and OFF.

Indoor unit does not operate, when EMERGENCY OPERATION switch is pressed.

1. Check indoor / outdoor connecting wire. (Check if the power is supplied to the indoor unit.)

2. Refer to 10-6. "Check of indoor electronic control P.C. board and indoor fan motor".

If blinking of OPERATION INDICATOR lamp cannot be checked, it can be checked with failure mode recall function.

"Test Run operation" means the operation within 30 minutes after EMERGENCY OPERATION switch is pressed.

Refer to outdoor unit service manual.

Left lamp Flash ON and OFF at

0.5-second intervals Cause: Indoor/ Outdoor unit

• Mis-wiring or trouble of serial signal

Refer to 10-6. "How to check the mis-wiring and serial signal error (when outdoor unit does not work)".

lamp

Left 2-time flash Cause: Indoor unit

• Trouble of room temp erature/ indoor coil thermistor

Check room temperature thermistor and indoor coil thermistor. Refer to 10-7. "Test point diagram and voltage".

Left

lamp 3-time flash Cause: Indoor unit

• Trouble of indoor fan motor

Refer to 10-6.

-1, -2 "Check of indoor fan motor".

Left lamp 4-time flash Cause: Indoor unit

• Trouble of indoor unit control system

Replace the indoor electronic control P.C. board.

Left lamp 5-time flash Cause: Outdoor unit

• Outdoor power system abnormality

Refer to "How to check the inverter/ compressor".

Left lamp 6-time flash Cause: Outdoor unit

• Trouble of thermistor in outdoor unit

Refer to "Check of outdoor thermistors".

Left lamp 7-time flash Cause: Outdoor unit

• Trouble of outdoor control system

Replace the inverter P.C. board or the outdoor electronic control P.C. board.

Left lamp 14-time flash Cause: Outdoor unit

• Other abnormality

Check "Flow chart of the detailed outdoor unit failure mode recall function."

Left lamp 15-time flash Cause: Indoor unit

• Trouble of damper

Refer to 10-6. "Check of damper".

10-4. TROUBLESHOOTING CHECK TABLE

OPERATION INDICATOR

Lighted

Blinking

Not lighted

NOTE: Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table

Abnormal

No.

point

Left lamp flashes.

Mis-Wiring or serial

signal

0.5-second ON

0.5-second OFF

· Flashing of OPERATION INDICATOR lamp (left-hand side lamp) indicates abnormalities.

SymptomOperation indicator lamp Check point

Indoor unit and outdoor unit do not operate.

When the serial signal from the outdoor unit is not received for a maximum of 6 minutes.

Countermeasure

• Refer to 10-6. "How to check mis-wiring and serial signal error".

Outdoor control

system

Indoor coil thermistor

Room temperature thermistor

Indoor fan

motor

Outdoor

power system

Outdoor

thermistors

Outdoor

control system

Other

abnormality

Indoor

damper

Indoor control system

Left lamp lights up

Left lamp flashes. 2-time flash

2.5-second OFF

Left lamp flashes. 3-time flash

2.5-second OFF

Left lamp flashes. 4-time flash

2.5-second OFF

Left lamp flashes. 5-time flash

2.5-second OFF

Left lamp flashes. 6-time flash

2.5-second OFF

Left lamp flashes. 7-time flash

2.5-second OFF

Left lamp flashes. 14-time flash

2.5-second OFF

Left lamp flashes. 15-time flash

2.5-second OFF

Outdoor unit does not operate.

Indoor unit and outdoor unit do not operate.

When it cannot properly read data in the nonvolatile memory of the inverter P.C. board or of the outdoor electronic control P.C. board.

When the indoor coil or the room temperature thermistor is shorts or opens circuit.

When the rotational frequency feedback signal is not emitted during the indoor fan operation.

When it cannot properly read data in the nonvolatile memory of the indoor electronic control P.C. board.

The compressor stops 3 times consecutively for over current protection or start-up failure protection within 1 minute after start-up.

When the outdoor thermistors short or open circuit during the compressor operation.

When it cannot properly read data in the nonvolatile memory of the inverter P.C. board or of the outdoor electronic control P.C. board.

An abnormality other than above mentioned is detected.

When the damper is not located at the designated position.

• Check the blinking pattern of the LED on the inverter P.C. board or the outdoor electronic control P.C. board.

• Refer to the characteristics of indoor coil thermistor, and the room temperature thermistor on 10-7.

• Refer to 10-6. -1, -2 "Check of indoor fan motor".

• Replace the indoor electronic control P.C. board.

• Refer to "Check of inverter/ compressor". Refer to outdoor unit service manual. Check the stop valve.

• Refer to "Check of outdoor thermistor". Refer to outdoor unit service manual.

• Replace the inverter P.C. board or the outdoor electronic control P.C. board. Refer to outdoor unit service manual.

• Confirm the abnormality in detail using the failure mode recall function. Refer to outdoor unit service manual.

• Refer to 10-6. "Check of damper".

NOTE: When the indoor unit has started operation and the above failures are detected (the first detection after the power

ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with OPERATION INDICATOR lamp flashing.

OPERATION INDICATOR

No.

Abnormal

point

MXZ type

Operation mode setting

Lighted

Blinking

Not lighted

Right lamp flash

2.5-second OFF

· Flashing of OPERATION INDICATOR lamp (right-hand side lamp) indicates abnormality.

· OPERATION INDICATOR lamp (left-hand side lamp) is lighted.

SymptomOperation indicator lamp Check point

Outdoor unit operates but indoor unit does not operate.

When the operation mode of the each indoor unit is differently set to COOL(includes DRY) and HEAT at the same time, the operation mode of the indoor unit that has operated at first has the priority.

Countermeasure

• Unify the operation mode. Refer to outdoor unit service manual.

NOTE: When the indoor unit has started operation and the above failures are detected (the first detection after the power

ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with OPERATION INDICATOR lamp flashing.

10-5. TROUBLE JUDGEMENT CRITERIA OF MAIN PARTS

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

Part name FigureCheck method and criteria

Room temperature thermistor (RT11)

Indoor coil thermistor (RT12 (MAIN1), RT13 (SUB) RT14 (MAIN2), RT15 (MAIN3))

Measure the resistance with a tester. (Part temperature: 10°C ~ 30°C)

Normal

8 kΩ ~ 20 kΩ

Indoor fan motor (Upper) (MF1)

Indoor fan motor (Lower) (MF2)

Damper lock motor Right (ML1)

Damper lock motor Left (ML2)

Horizontal vane motor (MV1)

Damper motor (MV2)

Check 10-6. -1.

Check 10-6. -2.

Measure the resistance between the terminals with a tester. (Part temperature: 10°C ~ 30°C)

Color of the lead wire

BRN-other one

Normal

235 Ω ~ 255 Ω

Measure the resistance between the terminals with a tester. (Part temperature: 10°C ~ 30°C)

Color of the lead wire BRN-other one

Normal

235 Ω ~ 255 Ω

Measure the resistance between the terminals with a tester. (Part temperature: 10°C ~ 30°C)

Color of the lead wire

BRN-other one (250 Ω) BRN-other one (300 Ω)

Normal

235 Ω ~ 255 Ω 282 Ω ~ 306 Ω

Measure the resistance between the terminals with a tester. (Part temperature: 10°C ~ 30°C)

Color of the lead wire BRN-other one

Normal

282 Ω ~ 306 Ω

RED

YLW BRN

ROTOR

ORN

GRN

10-6. TROUBLESHOOTING FLOW

When the left lamp of OPERATION INDICATOR lamp flashes 3 times and the right lamp of OPERATION INDICATOR lamp is not lighted. Indoor fan does not operate.

-1. Check of indoor fan motor (upper)

The indoor fan motor error has occurred, and the indoor fan doesn't operate.

Turn OFF the power supply.

Is there anything that interferes the rotation of the line flow fan?

Yes

Remove the object and adjust the line flow fan.

Is there 311V DC between CN211 (+) and (-), and does the voltage between CN211 (+) and (-) rise to the range between 3 and 6V DC within 12 seconds after EMERGENCY OPERATION switch is pressed?

Replace the indoor electronic control P.C. board.

Pay careful attention to the high voltage on the fan motor connector CN211.

Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch. Measure the supply voltage as follows within 12 seconds after EMERGENCY OPERATION switch is pressed. If more than 12 seconds passes by, turn OFF the power supply and turn it ON again, then measure the voltage.

1) Measure the voltage between CN211 (+) and (-).

2) Measure the voltage between CN211 (+) and (-).

If more than 12 seconds passes after EMERGENCY OPERATION switch is pressed, the voltage mentioned in above 2) goes 0V DC although the indoor electronic control P.C. board is normal.

Indoor electronic

Yes

Replace the indoor fan motor.

Fuse (F11)

VARISTOR (NR11)

R111

control P.C. Board

JR05

IC101

CN1X1

T11

C111

JR06

CN1Y1

CN151 CN152

CN211 CN212

The indoor fan motor error has occurred, and the indoor fan repeats "12-second ON and 30-second OFF" 3 times, and then stops.

Measure the voltage between CN211 (+) and (-) while the fan motor is rotating.

Is 0V DC or 15V DC held unchanged?

Yes (Unchanged)

Replace the indoor fan motor.

No (Changed)

Replace the indoor electronic control P.C. board.

When the left lamp of OPERATION INDICATOR lamp flashes 3 times and the right lamp of OPERATION INDICATOR lamp flashes ON and OFF every 0.5-second. Indoor fan does not operate.

-2. Check of indoor fan motor (lower)

The indoor fan motor error has occurred, and the indoor fan does not operate.

Turn OFF the power supply.

Is there anything that interferes the rotation of the line flow fan?

Yes

Remove the object and adjust the line flow fan.

Is there 311V DC between CN211 (+) and (-), and does the voltage between CN212 (+) and (-) rise to the range between 3 and 6VDC within 12 seconds after EMERGENCY OPERATION switch is pressed?

Replace the indoor electronic control P.C. board.

Pay careful attention to the high voltage on the fan motor connector CN212.

1) Measure the voltage between CN212 (+) and (-).

2) Measure the voltage between CN212 (+) and (-).

If more than 12 seconds passes after EMERGENCY OPERATION switch is pressed, the voltage mentioned in above 2) goes 0V DC although the indoor electronic control P.C. board is normal.

Indoor electronic

Yes

Replace the indoor fan motor.

Fuse (F11)

VARISTOR (NR11)

R111

control P.C. Board

IC101

T11

C111

JR05

CN1X1

JR06

CN1Y1

CN151 CN152 CN211

CN212

The indoor fan motor error has occurred, and the indoor fan repeats "12-second ON and 30-second OFF" 3 times, and then stops.

Measure the voltage between CN212 (+) and (-) while the fan motor is rotating.

Is 0V DC or 15V DC held unchanged?

Yes (Unchanged)

Replace the indoor fan motor.

No (Changed)

Replace the indoor electronic control P.C. board.

Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller.

Check of remote controller and receiver P.C. board

Check if the remote controller is exclusive for this air conditioner.

Switch on the remote controller.

Is the LCD display on the remote

controller visible?

Yes

Remove the batteries, then set them back and press RESET button. (Refer to 10-1.4.) Check if the unit operates with the remote controller.

Does the unit operate with the

remote controller?

Yes

(not clear)

Replace the batteries. (Refer to 10-1.4.)

Turn ON a radio to AM and press switch on the remote controller.

Is noise heard from radio?

Yes

Are there any fluorescent lights of inverter or of rapid-start type within the range of 1 m?

Replace the indoor electronic control P.C. board.

Yes

Replace the remote controller.

Reinstall the unit away from lights. Attach a filter on receiving part.

The unit cannot be operated with the remote controller. Also, OPERATION INDICATOR lamp does not light up by pressing EMERGENCY OPERATION switch.

Check of indoor electronic control P.C. board and indoor fan motor

Turn OFF the power supply. Remove indoor fan motor connector CN211/ CN212 and vane motor connector CN151/ CN152 from the indoor electronic control P.C. board and turn ON the power supply.

Does the unit operate with the remote controller? Does OPERATION INDICATOR lamp light up by pressing EMERGENCY

OPERATION switch?

Turn OFF the power supply. Measure the resistance between CN211/ CN212 and of the indoor fan motor connector.

Yes

Turn OFF the power supply. Measure the resistance of the horizontal vane motor coil. Refer to 10-5.

Replace the varistor (NR11) and fuse (F11).

Yes

Short/ open circuit: Replace the indoor fan motor.

Short/ open circuit: Replace the horizontal vane motor and the indoor electronic control P.C. board.

Turn OFF the power supply. Check both “parts side” and “pattern side” of the indoor electronic control P.C. board visually.

Measure the cement resistance R111 on the indoor electronic control P.C. board.

Are the varistor (NR11) burnt and the fuse (F11) blown?

Be sure to check both the fuse and the varistor in any case.

Is the fuse (F11) blown only?

Yes

Measure the resistance between (+) and (-) of the indoor fan motor connector (to CN211 / CN212 on the indoor electronic control P.C. board).

Is the resistance 1MΩ or more?

Yes

Replace the fuse (F11).

Is the resistance approx. 4Ω?

1. The fan motor connector's lead wire is red, whereas is black.

2. Connect "+" of the tester to fan motor connector's lead wire, and "-" to lead wire, otherwise the resistance cannot be measured properly.

Replace the fuse (F11) and the indoor fan motor.

Replace the indoor electronic control P.C. board and the indoor fan motor.

Yes

Fuse (F11)

VARISTOR (NR11)

R111

Indoor electronic control P.C. Board

JR06

JR05

IC101

CN1Y1

CN1X1

T11

C111

CN151 CN152

CN211 CN212

Replace the indoor electronic control P.C. board.

When the left lamp of OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate.

How to check mis-wiring and serial signal error

Turn OFF the power supply.

Is there rated voltage of 230V AC in the power supply?

Yes

Turn ON the power supply.

Is there 230V AC between outdoor terminal block S1 and S2?

Yes

Press EMERGENCY OPERATION switch once.

Does the left lamp of OPERATION INDICATOR lamp light up? <Confirmation of the power supply to the indoor unit>

Is the serial signal error indicated 6 minutes later?

Turn OFF the power supply. Check once again if the indoor/outdoor connecting wire is not wrongly connected.

Short-circuit the outdoor terminal block S2 and S3.

Turn ON the power supply of the outdoor unit.

Yes

Check the power supply.

Check the wiring.

Is there any mis-wiring, poor contact, or wire

disconnection of the indoor/outdoor connecting wire?

1. Mis-wiring may damage indoor electronic control

P.C. board during operation.

Be sure to confirm the wiring is correct before the operation starts.

Yes

Make them sure.

Inverter P.C. board (Parts side)

LED

Blinking

· Turn OFF inverter-controlled lighting equipment.

· Turn OFF the power supply and then turn it ON again.

· Press EMERGENCY OPERATION switch.

Is the serial signal error indicated 6 minutes later?

· Reinstall either the unit or the light away

from each

other.

· Attach a filter on receiving

Yes

section of the indoor unit.

In 3 minutes after turning ON the power supply of the outdoor unit, does the LED on the inverter P.C. board repeat quick blinking "3.6-second-OFF and 0.8-second-ON"? Be sure to check above in 3 minutes after turning ON. After 3 minutes, LED blinks 6 times. When the inverter P.C. board is normal, LED also blinks 6 times after 3 minutes.

Yes

Remove the short-circuit between outdoor terminal block S2 and S3. Is there amplitude of 10 to 20V DC between outdoor terminal block S2 and S3? <Confirmation of serial signal>

Yes

Is there 230V AC between outdoor terminal block S1 and S2? <Confirmation of power voltage>

Yes

Replace the indoor electronic control P.C. board.

Be sure to release the failure-mode recall function after checking.

As for outdoor unit, refer to outdoor unit service manual.

(Lighting)

Replace the inverter P.C. board. 2

2 Be careful of the residual

voltage of smoothing capacitor.

Is there any error of the indoor/outdoor connecting wire, such as the damage of the wire, intermediate connection, poor contact to the terminal block?

Yes

Replace the indoor/outdoor connecting.

When the left lamp of OPERATION INDICATOR lamp flashes 15-time. Indoor unit and outdoor unit do not operate.

Check of damper

After performing the check, make sure to release the failure mode recall function.

Turn OFF the power supply.

Is there anything that interferes the opening or closing movement of the damper?

Turn ON the power supply.

< Set up the failure mode recall function > Turn ON the power supply. While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time, press RESET button. First, release RESET button. And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds.

Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1

With the remote controller headed towards the indoor unit, press VANE CONTROL button.

Does the damper open and close? (Normally, the damper opens and closes each time VANE CONTROL button is pressed.)

Turn OFF the power supply. Measure the resistance according to 10-5.

1.Measure the resistance of the damper lock motors (ML1, ML2).

2.Measure the resistance of the damper motor (MV2).

Is the resistance value normal each?

Yes

Replace the motor that indicates the abnormal value.

Replace the indoor electronic control P.C. board.

Yes

Remove the object.

Yes

Make the damper open by pressing VANE CONTROL button.

1) Measure the voltage between CN1X1 (+) and (-).

2) Measure the voltage between CN1Y1 (+) and (-).

1) Is there 0V DC between CN1X1 (+) and (-)?

2) Is there 5V DC between CN1Y1 (+) and (-)?

Make the damper close by pressing VANE CONTROL button.

1. Regardless of normal or abnormal, a short beep is emitted once as the signal is received.

Indoor electronic control P.C. Board

Fuse (F11)

VARISTOR (NR11)

YesYe s

R111

C111

1) No

2) No

JR06

JR05

IC101

CN1Y1

CN1X1

T11

Replace either or both damper limit switches (open, close) as follows.

1) No : Replace the damper limit switch (open) .

2) No : Replace the damper limit switch (close) .

CN151 CN152 CN211 CN212

1) Measure the voltage between CN1X1 (+) and (-).

2) Measure the voltage between CN1Y1 (+) and (-).

1) No

1) Is there 5V DC between CN1X1 (+) and (-)?

2) Is there 0V DC between CN1Y1 (+) and (-)?

2) No

YesYe s

Replace the indoor electronic control P.C. board.

Replace either or both damper limit switches (open, close) as follows.

1) No : Replace the damper limit switch (open) .

2) No : Replace the damper limit switch (close) .

Electromagnetic noise enters into TV sets or radios

Is the unit earthed?

Yes

Is the distance between the antennas and the indoor unit within 3 m, or is the distance between the antennas and the outdoor unit within 3 m?

Is the distance between the TV sets or radios and the indoor unit within 1m, or is the distance between the TV sets or radios and the outdoor unit within 3 m?

Are the antennas damaged? Is the coaxial cable damaged? Is there any poor contact in the antenna wiring?

Is the indoor/outdoor connecting wire of the air conditioner and the wiring of the antennas in close?

Yes

Earth the unit.

Extend the distance between the antennas and the indoor unit, or the antennas and the outdoor unit.

Extend the distance between the TV sets or radios and the indoor unit, or the TV sets or radios and the outdoor unit.

Replace or repair the antenna. Replace or repair the coaxial cable.

Extend the distance between the indoor/outdoor connecting wire of the air conditioner and the wiring of the antennas.

Even if all of the above conditions is fulfilled, the electromagnetic noise may enter, depending on the electric field strength or the installation condition (combination of specific conditions such as antennas or wiring). Check the followings before asking for service.

1.Devices affected by the electromagnetic noise TV sets, radios (FM/AM broadcast, shortwave)

2.Channel, frequency, broadcast station affected by the electromagnetic noise

3.Channel, frequency, broadcast station unaffected by the electromagnetic noise

4.Layout of ; indoor/outdoor unit of the air conditioner, indoor/outdoor wiring, grounding wire, antennas, wiring from antennas, receiver

5.Electric field intensity of the broadcast station affected by the electromagnetic noise

6.Presence or absence of amplifier such as booster

7.Operation condition of air conditioner when the electromagnetic noise enters in.

1)Turn OFF the power supply once, and then turn ON the power supply. In this situation check for the electromagnetic noise.

2)Within 3 minutes after turning ON the power supply, press OPERATE/STOP (ON/OFF) button on the remote controller for power ON, and check for the electromagnetic noise.

3)After a short time (3 minutes later after turning ON), the outdoor unit starts running. During operation, check for the electromagnetic noise.

4)Press OPERATE/STOP (ON/OFF) button on the remote controller for power OFF, when the outdoor unit stops but the indoor/outdoor communication still runs on. In this situation check for the electromagnetic noise.

After checking the above, consult the service representative.

10-7. TEST POINT DIAGRAM AND VOLTAGE

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA

Indoor electronic control P.C. board

Room temperature thermistor RT11

FUSE (F11) T3.15AL250V

Varistor

NR11

Power supply input 230 V AC

5 V DC

Indoor coil thermistor RT14 (MAIN 2)

Indoor coil thermistor RT13 (SUB)

Indoor coil thermistor RT12 (MAIN 1)

Indoor coil thermistor RT15 (MAIN 3)

Release of Auto restart function Solder the Jumper wire to JR07. (Refer to 9-3.)

Timer short mode point

}

JPG, JPS (Refer to 9-1.)

Display, receiver P.C. board

1FAN/2FAN change switch

Emergency operation switch

JR05 JR06

}

Modification point for individual operation (Refer to 9-2.)

GND DC

12 V DC

Horizontal vane motor CN151

Damper lock motor Right CN151

Damper motor CN152

Damper lock motor Left CN152 Indoor fan motor (Upper) CN211

(+)

0/15 V

(+)

3-6 V DC

15 V DC (-)

(high voltage DC)

GND

325 V DC

Indoor fan motor (Lower) CN212

(+)

0/15 V

(+)

3-6 V DC

15 V DC (-)

325 V DC

Indoor coil thermistor [RT12,RT14,RT15 (MAIN), RT13 (SUB)] Room temperature thermistor (RT11)

(high voltage DC)

GND

Resistance (kΩ)

Temperature (°C)

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>

The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching.

(1) Slide the sleeve and check if there is a locking lever or not.

Sleeve

Slide the sleeve. Pull the terminal while

Locking lever

pushing the locking ever.

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA INDOOR UNIT

OPERATING PROCEDURE

1. Removing the panel

(1) Push both sides of the upper part of the front grille and pull the front grille open, and then remove the front grille from the panel. (See Photo 1.) (2) Remove the screws of the panel. (See Photo 2.) (3) Open the horizontal vane and push the left, right and middle of the upper part of the panel, and pull the panel toward you. (See Photo 2.) (4) Lift up the panel and remove it from the box.

Photo 1

Push

Grille

(2) The terminal with this connector has the locking mechanism.

Hold the sleeve, and pull out the terminal slowly.

Connector

PHOTOS

Push

Photo 2

Push

Horizontal vane

Screws of the panel

Push

OPERATING PROCEDURE PHOTOS

2. Removing the electronic control P.C. board and the display receiver P.C. board

(1) Remove the panel. (Refer to 1.) (2) Remove the screw of the electrical cover, and then the electrical cover. (See Photo 3.) (3) Remove the screw of the earth wires under the electrical box, and then the earth wires. (See Photo 4.) (4) Remove the screw of the earth wires connected to the indoor fan motor (lower), and then the earth wires. (See Photo 4.) (5) Remove the screw of the earth wires connected to the indoor heat exchanger, and then the earth wires. (See Photo 4.) (6) Unhook the lamp cover from the catch. (See Photo 4.) (7) Open the lamp cover and pull out the display receiver P.C. board. (8) Remove the screw of the earth wires connected to the electronic control P.C. board, and then the earth wires. (See Photo 4.) (9) Pull the electronic control P.C. board slightly toward you from the electrical box, and disconnect all the connectors on the electronic control P.C. board.

)

Pull out the electronic control P.C. board from the electrical

(10 box.

Photo 3

Photo 4

Screw of the electrical cover

Lamp cover

3. Removing the electrical box

(1) Remove the panel. (Refer to 1.) (2) Remove the electrical cover. (Refer to 2.) (3) Remove the earth wires from the electrical box. (Refer to 2.) (4) Remove the earth wires connected to the indoor fan motor and the ones connected to the indoor heat exchanger. (Refer to 2.) (5) Remove the screw of the electrical box. (See Photo 4.) (6) Disconnect the following connectors on the electronic control P.C. board. (See Photo 5.)

•Fan motor connectors < CN211, CN212 >

•Horizontal vane motor connector < CN151 >

•Damper motor connector < CN152 >

•

•Indoor coil thermistor connectors < CN112, CN113 >

•Room temperature thermistor connector < CN111 >

•Damper limit switch connectors < CN1X1, CN1Y1 > (7) Unhook the electrical box from the upper catch and pull out the electrical box from the box.

Display receiver P.C. board connectors < CN106, CN125 >

Screws of the earth wires

Screw of the electrical box

Photo 5

Indoor coil thermistor connector CN113

Display receiver P.C. board connector CN106

Display receiver P.C. board connector CN125

Horizontal vane motor connector CN151

Damper motor connector CN152

Fan motor connector CN211

Fan motor connector CN212

OPERATING PROCEDURE PHOTOS

4. Removing the horizontal vane motor unit

(1) Remove the panel. (Refer to 1.) (2) Remove the screws of the horizontal vane motor unit and pull out the horizontal vane motor unit. (See Photo 6.) (3) Disconnect the connector from the horizontal vane motor unit.

5. Removing the indoor fan motor (upper)

(1) Remove the panel. (Refer to 1.) (2) Remove the electrical box. (Refer to 3.) (3) Remove the nozzle (upper). (See Photo 7.) (4) Unhook the water cover from the catches and remove the

water cover. (See Photo 7.)

(5) Removing the screw of the motor band, and then the motor

band. (See Photo 8.)

(6) Remove the line flow fan and the indoor fan motor (upper)

from the box.

Photo 6

Photo 7

Screw of the horizontal vane motor unit

Nozzle <Upper>

Photo 8

Water cover

Screw of the motor band

OPERATING PROCEDURE PHOTOS

6. Removing the damper lock motor, the damper motor and the damper limit switch

(1) Remove the panel. (Refer to 1.)

(2) Remove the screws of the nozzle assembly (lower). (See Photo 9.) (3) Remove the drain hose from the nozzle assembly (lower) and pull out the nozzle assembly (lower) toward you. (4) Remove the tape fixing the lead wires of the damper motor and the damper lock motor from the nozzle assembly <lower>. (See Photo 10.) (5) Remove the screws of the damper lock motor. (See Photo 11 and 12.) (6) Lift the nozzle slightly and remove the lock shaft from with in the nozzle and remove the damper lock motors (ML1, ML2). (7) Remove the screws of the damper motor support, and then the damper motor support. (8) Remove the screws of the damper motor, and then the damper motor from the damper motor support. (9) Disconnect the connector from the damper motor.

)

Remove the damper limit switches (LS1, LS2).

(10

Photo 9

Screw of the nozzle

Photo 10

Lead wires of the damper motor and the damper lock motor

Screw of the nozzle

Drain hose

7. Removing the indoor fan motor (lower)

(1) Remove the panel. (Refer to 1.)

(2) Remove the nozzle assembly (lower) and the drain hose. (Refer to 6.) (3) Remove the screw of the earth wire of the indoor fan motor (lower), and then the earth wire. (See Photo 13.) (4) Remove the screw of the motor band, and then the motor band. (See Photo 13.) (5) Remove the line flow fan and the indoor fan motor (lower) from the box.

Photo 13

Photo 11

Photo 12

Screw of the damper motor support

Screws of the damper motor

Screws of the damper lock motor (Left)

Screw of the motor band

Screw of the earth wire

Screws of the damper lock motor (Right)

PARTS LIST (non-RoHS compliant)12

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 12-1. INDOOR UNIT STRUCTURAL PARTS

12-2. ACCESSORY AND REMOTE CONTROLLER

Optional parts (See 14.)

12-1. INDOOR UNIT STRUCTURAL PARTS

Symbol

No.

M21 E0W 234

T2W A4T 000

T2W A4T 010

T2W A4T 100

T2W A4T 233

Part No.

Part name

BOX ASSEMBLY PANEL ASSEMBLY FRONT GRILLE CATECHIN AIR FILTER BACK PLATE

in Wiring

Diagram

12-2. ACCESSORY AND REMOTE CONTROLLER

Part number that is circled is not shown in the illustration.

T2W A4T 426

M21 HL5 256

REMOTE CONTROLLER FELT TAPE

Q'ty/unit

MFZ-KA25VA - MFZ-KA50VA -

E1 E1 E1

MFZ-KA35VA -

1 1 1 1 1

1 1

1 1 1 1 1

1 1

1 1 1 1 1

1 1

Remarks

KM05G

PARTS LIST (non-RoHS compliant)

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 12-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

2123 22

14 15 12 19

PARTS LIST (non-RoHS compliant)

12-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

Q'ty/unit

E1 E1 E1

1 1 1 3 2 1 1 1 1 1 1 2 1 1 2 1 1 2 1 1

1 1 1 1 1 1 1

No. Part No.

M21 E0W 235

T2W A6T 040

T2W A4T 040

T2W A4T 079

M21 E0W 504

M21 E2W 235

T2W A6T 306

T2W A4T 506

T2W A6T 049

T2W A6T 047

T2W A4T 047

M21 WJ7 306

M21 W60 703

T2W A6T 041

T2W A4T 049

T2W A5T 309

T2W A4T 301

T2W A4T 515

T2W YH1 376

M21 H81 307 T2W A4T 450

T2W A5T 450 T2W A6T 450

T2W A4T 328

M21 E0W 043

T2W A4T 306

T2W A4T 300

T2W A4T 309

T2W A4T 382

T2W A4T 384

Including fan motor rubber mount (2PCS/SET)

NOZZLE ASSEMBLY (UPPER) HORIZONTAL VANE (BACK) HORIZONTAL VANE (FRONT) VANE SLEEVE BEARING ASSEMBLY NOZZLE ASSEMBLY (LOWER) DAMPER MOTOR VANE MOTOR SUPPORT SM SHAFT DAMPER LIMIT SWITCH (CLOSE) DAMPER LIMIT SWITCH (OPEN) DAMPER LOCK MOTOR DRAIN HOSE DAMPER LOCK SHAFT LINE FLOW FAN (LOWER) INDOOR FAN MOTOR ASSEMBLY (LOWER) MOTOR BAND TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR ELECTRONIC CONTROL P.C. BOARD ELECTRONIC CONTROL P.C. BOARD ELECTRONIC CONTROL P.C. BOARD DISPLAY RECEIVER SWITCH P.C. BOARD LAMP COVER HORIZONTAL VANE MOTOR UNIT INDOOR FAN MOTOR ASSEMBLY (UPPER) LINE FLOW FAN (UPPER) FUSE VARISTOR

Part name

Symbol

in Wiring

Diagram

MV2

LS2 LS1

ML1,2

MF2

RT11

MV1

MF1

F11

NR11

MFZ-KA25VA - MFZ-KA35VA - MFZ-KA50VA -

1 1 1 3 2 1 1 1 1 1 1 2 1 1 2 1 1 2 1 1 1

1 1 1 1 1 1 1

Remarks

1 1 1 3 2 1 1 1 1 1 1 2 1 1 2 1 1 2 1 1

1 1 1 1 1 1 1 1

UP & DOWN

RIGHT & LEFT

RC0J30–

AUTO RESTART AUTO RESTART AUTO RESTART

UP & DOWN RC0J30–

T3.15AL250V

PARTS LIST (non-RoHS compliant)

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 12-4. INDOOR UNIT HEAT EXCHANGER

12-4. INDOOR UNIT HEAT EXCHANGER

No. Part No.

T2W A4T 638 M21 E0W 620

M21 E8W 620

M21 VL4 664 M21 NJ9 663

M21 VL4 663

T2W A4T 791

T2W A5T 308

T2W A4T 308

HAIR PIN COVER INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER UNION (LIQ) UNION (GAS) UNION (GAS) WATER COVER INDOOR COIL THERMISTOR INDOOR COIL THERMISTOR SET

Part name

Symbol

in Wiring

Diagram

RT13

RT12,14,15

Q'ty/unit

MFZ-KA25VA - MFZ-KA35VA - MFZ-KA50VA -

E1 E1 E1

1 1

1 1 1

1 1

1 1 1

1 1

1 1 1 1

Remarks

6.35

9.52

12.7

3PCS/SET

RoHS PARTS LIST (RoHS compliant)13

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 13-1. INDOOR UNIT STRUCTURAL PARTS

13-2. ACCESSORY AND REMOTE CONTROLLER

Optional parts (See 14.)

13-1. INDOOR UNIT STRUCTURAL PARTS

Q'ty/unit

Symbol

No.

1 G T2W L3V 234 BOX ASSEMBLY 111111111 2 G T2W L3V 000 PANEL ASSEMBLY 111111111 3 G T2W L3V 010 FRONT GRILLE 111111111 4 G M21 L3V 100 CATECHIN AIR FILTER 111111111 5 G T2W L3V 233 BACK PLATE 111111111

Part No. Part name

RoHS

in Wiring

Diagram

25VA- 35VA- 50VA-

E1 E2 E3 E1 E2 E3 E1 E2 E3

MFZ-

Remarks

13-2. ACCESSORY AND REMOTE CONTROLLER

Part number that is circled is not shown in the illustration.

6 G T2W A4T 426 REMOTE CONTROLLER 111111111KM05G

G M21 L3V 256 FELT TAPE 111111111

RoHS PARTS LIST (RoHS compliant)

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 13-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

2123 22

14 15 12 19

RoHS PARTS LIST (RoHS compliant)

13-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

Part numbers that are circled are not shown in the illustration.

Q'ty/unit

No.

1 G M21 L3V 235 2 G M21 L4V 040 3 G M21 L3V 040 4 G M21 L3V 071 5 G M21 L4V 504 6 G M21 L4V 235 7 G M21 L5V 306 8 G M21 L3V 506 9 G M21 L3V 049

10 G M21 L3V 047

11 G M21 L4V 047

12 G M21 L4V 306

14 G M21 L3V 041 15 G M21 L4V 049 16 G M21 L4V 302 17 G M21 1L9 300 18 G M21 L3V 023 19 G T2W L3V 376 20 G M21 L3V 307

22 G M21 L3V 328 23 G T2W L3V 043 24 G M21 L3V 306 25 G M21 1L3 300 26 G M21 L3V 302

27 28

Including fan motor rubber mount (2PCS/SET)

Part No. Part name

RoHS

DAMPER LOCK MOTOR G M21 L3V 703 G M21 3K5 703

G T2W L3V 450 G T2W 2L0 450 G T2W L4V 450 G T2W 2L2 450 G T2W L5V 450 G T2W 2L4 450

G T2W L3V 382 G T2W L3V 384

DRAIN HOSE

DAMPER

LOCK SHAFT

LINE FLOW FAN (LOWER)

INDOOR FAN MOTOR ASSEMBLY (LOWER)

MOTOR BAND

TERMINAL BLOCK

ROOM TEMPERATURE THERMISTOR

ELECTRONIC CONTROL P.C. BOARD

DISPLAY RECEIVER SWITCH P.C. BOARD

LAMP COVER

HORIZONTAL VANE MOTOR UNIT

INDOOR FAN MOTOR ASSEMBLY (UPPER)

LINE FLOW FAN (UPPER)

FUSE

VARISTOR

Symbol

in Wiring

Diagram

MV2111111111UP & DOWN

LS2111111111 LS1111111111

ML1,2 2 2 2 222222

MF2111111111RC0J30-

TB 111111111

RT11111111111

MV1111111111UP & DOWN MF1111111111RC0J30-

F11 111111111

NR11111111111

25VA- 35VA- 50VA-

E1 E2 E3 E1 E2 E3 E1 E2 E3

111111111 111111111 111111111 333333333 222222222 111111111

111111111 111111111

11 11 11

111 111111111 222222222 111111111

222222222

111111111 111111111

111111111

MFZ-

Remarks

RIGHT & LEFT

AUTO RESTART

AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART

AUTO RESTART

T3.15AL250V

RoHS PARTS LIST (RoHS compliant)

MFZ-KA25VA MFZ-KA35VA MFZ-KA50VA 13-4. INDOOR UNIT HEAT EXCHANGER

13-4. INDOOR UNIT HEAT EXCHANGER

Q'ty/unit

Symbol

No.

1 G M21 L3V 638 HAIR PIN COVER 1 1 1 111111

3 G M21 L3V 664 UNION (LIQ) 1 1 1 1111116.35

5 G M21 L3V 791 WATER COVER 1 1 1 111111 6 G M21 L4V 305 7 G M21 L3V 305

Part No. Part name

RoHS

G M21 L3V 620 G M21 L5V 620

G M21 L3V 663 UNION (GAS) 1 1 1 1 1 1 9.52 G M21 L5V 663 UNION (GAS) 1 1 1 12.7

INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER

INDOOR COIL THERMISTOR INDOOR COIL THERMISTOR SET RT12,14,15

in Wiring

Diagram

RT13 1 1 1 111111

25VA- 35VA- 50VA-

E1 E2 E3 E1 E2 E3 E1 E2 E3

111111

1111111113PCS/SET

MFZ-

111

Remarks

OPTIONAL PARTS

AIR CLEANING FILTER (ANTI-ALLERGY ENZYME FILTER)

Normal life of AIR CLEANING FILTER is 1 year. If AIR CLEANING FILTER is to be washed, soak AIR CLEANING FILTER in water (when showing dirt, in lukewarm water) and rinse it delicately, without removing the filter from the frame about once every 3 months.

Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet.

Do not remove or attach AIR CLEANING FILTER during unit operation.

Model

MFZ-KA25VAMFZ-KA25VAMFZ-KA25VAMFZ-KA35VAMFZ-KA35VAMFZ-KA35VAMFZ-KA50VAMFZ-KA50VAMFZ-KA50VA-

Replacement of the air cleaning filter

Part No.

MAC-415FT-E

Remove the catechin air filter.(1)

Open the front grille

Remove the air cleaning filter.(2)

Air cleaning filter

Catechin air filter

Attach a new air cleaning filter. Fix the filter

(3)

with the tabs securely.

Install the catechin air filter.

(4)

Be sure to install its both ends into the tabs as shown below.

Install.

Securely close the front grille.(5)

4949

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Mar. 2009. No. OB409 REVISED EDITION-C 7 Distributed in Dec. 2008. No. OB409 REVISED EDITION-B 7 Distributed in Jun. 2006. No. OB409 REVISED EDITION-A 8 Distributed in May 2005. No. OB409 8 Made in Japan

New publication, effective Mar. 2009 Specifications subject to change without notice.

Mitsubishi OB409C Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual