Mitsubishi MFZ-KA50VA-E1, MUZ-GA50VA-E1 user guide manual

SPLIT-TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Models

Revision E:

MFZ-KA25VA-E5, MFZ-KA35VA-E5 and

MFZ-KA50VA-

Please void OB409 REVISED EDITION-D.

E5

have been added.

No. OB409

REVISED EDITION-E

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

-

E1

-

E2

-

E3

-

E4

-

E5

-

E1

-

E2

-

E3

-

E4

-

E5

MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA

MFZ-KA50VA
MFZ-KA50VA
MFZ-KA50VA
MFZ-KA50VA
MFZ-KA50VA

Outdoor unit service manual
SUZ-KA•VA(H) Series (OC322)
MXZ-A•VA Series (OB377, OC316)
MXZ-8B•VA Series (OCH480)
MXZ-D•VA Series (OBH626)

CONTENTS

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

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

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

4. NOISE CRITERIA CURVES ······························ 8

5. OUTLINES AND DIMENSIONS ························ 9

6. WIRING DIAGRAM ·········································· 10

7. REFRIGERANT SYSTEM DIAGRAM ··············11

8. PERFORMANCE CURVES ····························· 12

9. SERVICE FUNCTIONS ··································· 23

10. TROUBLESHOOTING ····································· 25

11. DISASSEMBLY INSTRUCTIONS ···················· 39

12. PARTS LIST ····················································· 43

13. RoHS PARTS LIST ·········································· 47

14. OPTIONAL PARTS ·········································· 51

-

E1

-

E2

-

E3

-

E4

-

E5

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:

OB409E

• MFZ-KA25VA-E2, MFZ-KA35VA-E2 and MFZ-KA50VA-E2 have been added.

• “Failure mode recall function” has been corrected.

• RoHS PARTS LIST has been added.

Revision B:

• MFZ-KA25VA-E3, MFZ-KA35VA-E3 and MFZ-KA50VA-E3 have been added.

Revision C:

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

Revision D:

• MFZ-KA25VA-E4, MFZ-KA35VA-E4 and MFZ-KA50VA-E4 have been added.

Revision E:

• MFZ-KA25VA-E5, MFZ-KA35VA-E5 and MFZ-KA50VA-E5 have been added.

1

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.)
<
<E2> Indoor fan operates intermittently with very Low speed or stops.

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.

MFZ-KA25VA-E3 MFZ-KA25VA­MFZ-KA35VA-E3 MFZ-KA35VA­MFZ-KA50VA-E3 MFZ-KA50VA-

TECHNICAL CHANGES

E2

E2

E2

> Indoor fan operates with very Low speed or stops.

E1

E3

E3

E3

E4

E4

E4

1. Fan motor has been changed.

MFZ-KA25VA-E4 MFZ-KA25VA­MFZ-KA35VA-E4 MFZ-KA35VA­MFZ-KA50VA-E4 MFZ-KA50VA-

1. Software has been changed for ERP.
(MFZ-KA25/35/50VA-

E5

are the ERP models for Multi-series.)

E5

E5

E5

2

2

OB409E

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

3

ACCESSORIES

OB409E

MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA

REMOTE CONTROLLER

Signal transmitting section

Drain hose
Remote controller holder
Fixing screw for 3.5 x 16 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

44

3

OB409E

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) m

Single phase
230 V, 50 Hz

E1,E2,E3

3

/h

E4,E5

3

/h 426/348/288 456/372/300 444/366/300 468/372/312 552/474/426 588/528/444

522

534

E1,E2,E3

E4,E5

546

564

Single phase
230 V, 50 Hz

546 570

Breaker capacity A 10 10 10

Running current 1 A 0.2 0.2 0.2

Power input

data

Auxiliary heater A(kW) — — —

Electrical

Power factor 1 % 54 54 54

1 W 25 25 25

Fan motor current 1 A 0.2 0.2 0.2

Fan
motor

Model (Upper)

Model (Lower)

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

RC0J30-GA RC0J30-GA RC0J30-GA

RC0J30-KL RC0J30-KL RC0J30-KL

RC0J30-HA RC0J30-HA RC0J30-HA

RC0J30-HC RC0J30-HC RC0J30-HC

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

Special

remarks

Fan speed (Super High) rpm

Upper

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

Fan speed (Super High) rpm

Lower

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

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

1,080

1,110

880

910

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

1,010

1,030

1,010

1,030

1,130

930

Fan speed regulator 4 4 4

Remote controller model KM05G KM05G KM05G

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.

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

Single phase
230 V, 50 Hz

1,030

1,050

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

642

672

1,280

1,320

1,140/1,020/940

E1,E2,E3

1,030

1,050

E4,E5

1,080

1,120

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

E1,E2,E3

E4,E5

E1,E2,E3

E4,E5

708

738

1,260

1,310

1,070/930/850

E1,E2,E3

E4,E5

1,260

1,310

5

SUZ-KA35VA(H).TH

OB409E

SUZ-KA35VA(H)R1.TH

SUZ-KA35VA2.TH

Indoor model

MFZ-KA35VA

SUZ-KA50VA.TH

SUZ-KA50VA

1.TH

Indoor model

MFZ-KA50VA

SUZ-KA50VAR2.TH

SUZ-KA50VA2.TH

Indoor model

MFZ-KA50VA

Outdoor model

SUZ-KA25VA(H).TH

SUZ-KA25VA(H)R1.TH

SUZ-KA25VA2.TH

Indoor model
MFZ-KA25VA

Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating

Power supply

Single phase
230 V, 50 Hz

Single phase
230 V, 50 Hz

Single phase
230 V, 50 Hz

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

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

Air fl ow(High/Low) m

3

/h

25VA(H)R1.TH

25VA2.TH

35VA(H)R1.TH

35VA2.TH

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

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 1 A 2.3 3.5 4.5 4.5 6.5 8.0 6.5 8.0

Fan motor current

Electrical

data

1 A 0.33 0.33 0.30 0.30

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

KNB073FFDHC

25VA2.TH

KNB073FDVH

35VA(H).TH

35VA(H)R1.TH

35VA2.TH

KNB092FCAH

KNB092FFAHC

SNB130FLDH or

SNB130FLDH1

SNB130FGBH

Output W 550 650 850 900

Winding

Compressor

resistance (at 20 ºC)

25VA(H).TH

Ω

25VA(H)R1.TH

25VA2.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

35VA2.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)

Ω

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

25VA2.TH

33

30

35VA(H).TH

35VA(H)R1.TH

35VA2.TH

37

33

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

25VA2.TH

35VA(H)R1.TH

35VA2.TH

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

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

Special

remarks

Fan speed regulator 2 3 2 3 2 2
Refrigerant fi lling

capacity (R410A)

Refrigerating oil (Model) L

kg 0.90 1.05 1.60 1.60

0.32 (NEO22) 0.32 (NEO22)

FLDH: 0.45 (NEO22)

FLDH1: 0.60 (NEO22)

0.45 (NEO22)

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.

6

Specifications and rated conditions of main electric parts

OB409E

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

12 V 250 Ω or 12 V 300 Ω

12 V 300 Ω

ERZV14D471

7

4

OB409E

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

90

80

70

60

50

40

30

FUNCTION

COOLING

HEATING

SPL(dB(A))

37

37

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

90

80

NC-70

NC-60

NC-50

NC-40

NC-30

70

60

50

40

30

FUNCTION

COOLING

HEATING

SPL(dB(A))

38

38

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

20

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

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

90

80

70

60

50

40

FUNCTION

COOLING

HEATING

SPL(dB(A))

43

44

LINE

NC-70

NC-60

NC-50

NC-40

20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

INDOOR UNIT

MICROPHONE

WALL

1m

1m

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

30

20

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-30

NC-20

NC-10

8

5

OB409E

OUTLINES AND DIMENSIONS

MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA

INDOOR UNIT

125

60

12

19

60

58

700

46.5 46.5

100mm or more

54 506 140

607

100mm or more

19

110

100mm or more

45

35

600

Air out

Air out

Installation plate

Air in

11

123

drain

4- 6 Hole

Indoor unit

20012

118

96

12

128

12

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

Liquid pipe

6.35(flared)1/4

6019

60

363

337 337

205

165

125

Unit: mm

131131

7

333210

593

162

Wireless remote controller

147

60

454155

72

60

80

9

6

OB409E

WIRING DIAGRAM

MFZ-KA25VA­MFZ-KA35VA­MFZ-KA50VA-

E1,E2

E1,E2

E1,E2

TO OUTDOOR
UNIT
CONNECTING

RT15

RT12

RT13

RT14

RT11

LS1

LS2

230V~

12-24V

TB

S1

S2

S3

1
2
3
4

1
2
3
4
5
6

CN

111

CN

1X1

CN

1Y1

BLK
WHT

WHT
RED

DISP REC
P.C.BOARD

CN CN

106

CN113

CN112

3
2

CN201

1

125

MV1

62

F11

NR11

3
2
1

ML1

55

CN

151

DB111

CN202

ML2

MV2

55

CN

152

CN211

T11

INDOOR ELECTRONIC

LD103

CONTROL P.C. BOARD

GRN

MF1

1
2
3
4
5
6

5

CN212

MF2

5

1
2
3
4
5
6

MFZ-KA25VA­MFZ-KA35VA­MFZ-KA50VA-

: Terminal block, : Connector

E3,E4

E3,E4

E3,E4

10

MFZ-KA25VA-

OB409E

MFZ-KA35VA­MFZ-KA50VA-

E5

E5

E5

7

REFRIGERANT SYSTEM DIAGRAM

MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA

INDOOR UNIT

Indoor
heat
exchanger

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

Room temperature
thermistor
RT11

Indoor coil
thermistor
RT12 (main)

Distributor

Unit: mm

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

Flared connection

Flared connection

Refrigerant flow in cooling
Refrigerant flow in heating

Refrigerant pipe 6.35
(with heat insulator)

11

8

OB409E

PERFORMANCE CURVES

MFZ-KA25VA
MFZ-KA35VA
MFZ-KA50VA

The standard 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

198 ~ 264 V, 50 Hz

(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 and dry bulb temperature difference on the side of the following chart shows the difference between the
indoor intake air wet and dry bulb temperature and the indoor outlet air wet and 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 and 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

12

11.38.0

OB409E

SUZ-KA25VA(H)R1.TH

SUZ-KA25VA2.TH

Rated frequency 56.5Hz

SUZ-KA35VA(H)R1.TH

SUZ-KA35VA2.TH

Rated frequency 75Hz

5.43.9

SUZ-KA25VA(H)R1.TH

SUZ-KA25VA2.TH

Rated frequency 56.5Hz

SUZ-KA35VA(H)R1.TH

SUZ-KA35VA2.TH

Rated frequency 75Hz

12.5

11.4

10.4

9.3

8.3

7.4

SUZ-KA50VAR2.TH

SUZ-KA50VA2.TH

SUZ-KA50VA(1).TH

Rated frequency 76Hz

Rated frequency 75Hz

11.4

10.4

9.3

8.3

7.4

SUZ-KA50VAR2.TH

SUZ-KA50VA2.TH

SUZ-KA50VA(1).TH

Rated frequency 76Hz

Rated frequency 75Hz

1.513.7

1.4

1.3

1.2

1.1

26

24

1.0

Capacity correction factors

0.9

-10-5 0 5 101520253035404546

1.3

1.2

Total input (cooling)

26

24

1.1

1.0

0.9

0.86.5

Input correction factors

-10-5 0 5 101520253035404546

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

Cooling capacity

22
20
18

22
20
18

Heating capacity

9.4

7.5

SUZ-KA25VA(H)R1.TH

10.6

8.5

SUZ-KA25VA2.TH

Rated frequency 81Hz

SUZ-KA35VA(H)R1.TH

SUZ-KA35VA2.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

1

SUZ-KA50VA(

Rated frequency 79Hz

SUZ-KA50VAR2.TH

SUZ-KA50VA2.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.

15

1.3

20

1.2

26

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

13

SUZ-KA25VA(H).TH

OB409E

SUZ-KA25VA(H)R1.TH
SUZ-KA25VA2.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
SUZ-KA25VA2.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
SUZ-KA25VA2.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
SUZ-KA25VA2.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
SUZ-KA35VA2.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
SUZ-KA50VA2.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
SUZ-KA35VA2.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
SUZ-KA50VA2.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
SUZ-KA35VA2.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
SUZ-KA50VA2.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
SUZ-KA35VA2.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
SUZ-KA50VA2.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

<How to operate fixed-frequency operation (Test run operation)>

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

2

[Gauge])

14

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

OB409E

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, KA25VA2.TH)
77 Hz (SUZ-KA35VA(H).TH)
75 Hz (SUZ-KA35VA(H)R1.TH, KA35VA2.TH)
75 Hz (SUZ-KA50VA(1).TH)
76 Hz (SUZ-KA50VAR2.TH, KA50VA2.TH)

Dry-bulb temperature

20

25

30

Relative humidity (%)

50

60

70

SUZ-KA25VA(H).TH
SUZ-KA25VA(H)R1.TH
SUZ-KA25VA2.TH

2

(kgf/cm

[Gauge])

1.4

14

1.2

12

1.0

10

0.8

8

0.6

6

Outdoor low pressure

0.4

4

2

0.2

Ambient temperature (°C) Ambient humidity (%)

(MPa [Gauge])

57 Hz (KA25VA(H).TH)

56.5 Hz (KA25VA(H)R1.TH,
KA25VA2.TH)

15 2050256030

18 32

70 (%)

SUZ-KA25VA(H).TH
SUZ-KA25VA(H)R1.TH
SUZ-KA25VA2.TH

3.5

3.0

2.5

2.0

57 Hz (KA25VA(H).TH)

Outdoor unit current (A)

Ambient temperature (°C) Ambient humidity (%)

56.5 Hz (KA25VA(H)R1.TH,
KA25VA2.TH)

1.5
15 205025603070 35(°C)

18

32

(%)

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
SUZ-KA25VA2.TH

3.0

2.5

35(°C)

(kgf/cm

14

12

10

8

6

Outdoor low pressure

4

2

Ambient temperature (°C) Ambient humidity (%)

58 Hz

SUZ-KA35VA(H).TH
SUZ-KA35VA(H)R1.TH
SUZ-KA35VA2.TH

2

[Gauge])

(MPa [Gauge])

1.4

1.2

1.0

0.8

0.6

0.4

0.2

77 Hz (KA35VA(H).TH)
75 Hz (KA35VA(H)R1.TH,
KA35VA2.TH)

15 2050256030

18 32

35(°C)

70 (%)

SUZ-KA35VA(H).TH
SUZ-KA35VA(H)R1.TH
SUZ-KA35VA2.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).TH)
75 Hz (KA35VA(H)R1.TH,
KA35VA2.TH)

18

32

(%)

SUZ-KA35VA(H).TH
SUZ-KA35VA(H)R1.TH
SUZ-KA35VA2.TH

4.5

58 Hz

4.0

SUZ-KA50VA(1).TH
SUZ-KA50VAR2.TH
SUZ-KA50VA2.TH

2

(kgf/cm

[Gauge])

14

12

10

8

6

Outdoor low pressure

4

2

Ambient temperature (°C) Ambient humidity (%)

(MPa [Gauge])

1.4

1.2

1.0

0.8

0.6

0.4

0.2

75 Hz (KA50VA(1).TH)
76 Hz (KA50VAR2.TH,
KA50VA2.TH)

15 2050256030

18 32

70 (%)

SUZ-KA50VA(1).TH
SUZ-KA50VAR2.TH
SUZ-KA50VA2.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(1).TH)
76 Hz (KA50VAR2.TH,
KA50VA2.TH)

18

32

SUZ-KA50VA(1).TH
SUZ-KA50VAR2.TH
SUZ-KA50VA2.TH

6.0

58 Hz

5.5

35(°C)

(%)

2.0

Outdoor unit current (A)

1.5
2 5 10 15 20 25(°C)

Ambient temperature (°C)

3.5

Outdoor unit current (A)

3.0
2 5 10 15 20 25(°C)

Ambient temperature (°C)

15

5.0

Outdoor unit current (A)

4.5
2 5 10 15 20 25(°C)

Ambient temperature (°C)

PERFORMANCE DATA

OB409E

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

SUZ-KA25VA(H)R1.TH, SUZ-KA25VA2.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

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

16