Mitsubishi MS-C18TV-E1, MS-C24TV-E1, MU-C18TV-E1, MU-C24TV-E1 Service Manual

SPLIT-TYPE AIR CONDITIONERS

HFC

utilized

R407C

SERVICE MANUAL

Wireless type Models

No. OB273

MS-C18TV MS-C24TV -

E1 E1

(WH)

· MU-C18TV -

· MU-C24TV -

CONTENTS

1. TECHNICAL CHANGES ····································3

2. PART NAMES AND FUNCTIONS······················5

3. SPECIFICATION·················································7

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

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

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

7. REFRIGERANT SYSTEM DIAGRAM··············12

8. PERFORMANCE CURVES······························14

9. MICROPROCESSOR CONTROL ····················20

10. SERVICE FUNCTIONS·····································27

11. TROUBLESHOOTING ······································29

12. DISASSEMBLY INSTRUCTIONS·····················37

13. PARTS LIST······················································43

14. OPTIONAL PARTS ···········································46

E1E1

-30 -20 -10 0 10 20

30

40 50 60

-0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

(MPa[Gauge])

R407C R22

Conversion chart of refrigerant temperature and pressure

Saturated liquid pressure

(:)

Lubricant

Refrigerant

New refrigerant

R407C

R32: R125: R134a (23%:25%:52%)

Non-azeotropic refrigerant

Not included

A1/A1

86.2

-43.6

0.9177

42.5

Non combustible

0

1530

From liquid phase in cylinder

Impossible

Incompatible oil

Non Non

Previous refrigerant

R22

HCFC22 (100%)

Single refrigerant

Included

A1

86.5

-40.8

0.94

44.4

Non combustible

0.055 1700

Gas phase

Possible

Compatible oil

Light yellow

Non

Refrigerant Composition (Ratio) Refrigerant handling Chlorine Safety group (ASHRAE) Molecular weight Boiling point (:) Steam pressure [25:](Mpa [Gauge]) Saturated steam density [25:](Kg/K) Combustibility ODP w1 GWP w2 Refrigerant charge method Additional charge on leakage Kind Color Smell

w1:Ozone Destruction Parameter : based on CFC11 w2 :Global Warmth Parameter : based on CO

2

1

TECHNICAL CHANGES

INFORMATION FOR THE AIR CONDITIONER WITH R-407C REFRIGERANT

This room air conditioner adopts HFC refrigerant (R407C) which will never destroy the ozone layer. Pay attention to following points.

1 Take sufficient care not to allow water and other contaminations to enter the R407C refrigerant during storage and

installation, since it is more susceptible to contaminations than HCFC (R22) refrigerant.

2 Clean refrigerant pipings should be used. 3 Composition change may occur in R407C since it is a mixed refrigerant. When charging, charge liquid refrigerant to

prevent composition change.

4 Be especially careful when managing the tools.

If dust, dirt, or water mixes in the refrigerant cycle, it may cause decrease of performance.

New Specification Previous Specification

The incompatible lubricant easily separates from refrigerant and makes the layer in the upper inside the suction muffler. The higher position of the returning oil hole enables to return the lubricant of the upper layer to the compressor.

Suction muffler

Compressor

Returning oil hole

Lubricant

Refrigerant

NOTE : The unit of pressure has been changed to MPa on the

The conversion factor is: 1(MPa[Gauge]) =10.2(kgf/ff[Gauge])

3

Since refrigerant and lubricant are compatible each other, lubricant returns to the compressor through the lower position returning oil hole.

Suction muffler

Compressor

Returning oil hole

Lubricant and Refrigerant

international system of units(SI unit system).

Electronic scale for refrigerant charging

Refrigerant gas cylinder operating valve

Refrigerant gas cylinder for R407C with siphon

Refrigerant (liquid)

Gage manifold

Outdoor unit

Indoor unit

Union

Liquid pipe Gas pipe

Service port

Stop valve

Charge hose

1.Tools dedicated for the air conditioner with R407C refrigerant

R407C tools Can R22 tools be used?

Gas leak detector

A gauge manifold with a sight glass is recommended for charging the liquid refregerant.

Hose material have been changed to improve the pressure resistance.

Dedicated for HFC refrigerant.

Description

Provided to prevent the back flow of oil. This adapter enables you to use existing vacuum pumps.

No

Yes Yes

New

Gauge manifold

Charge hose

Torque wrench Flare tool

Vacuum pump adapter

Electronic scale for refrigerant charging

Use the electronic control scale for measuring the R407C.

The following tools are required for R407C refrigerant. Some R22 tools can be substituted for R407C tools. Do not use tools that are used with R22 refrigerant in order to avoid mixing oils.

2.Refrigerant piping

Do not use copper pipes which are broken, deformed or discoloured. In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulfur and oxides, or have no dust/ dirt, shaving particles, oil, moisture or any other contamination.

•If there is a large amount of residual oil inside the piping and joints, deterioration of the refrigerant oil will result.

3.Refrigerant oil

Apply the specific refrigeration oil (accessories) to the flare and the union seat surfaces.

4.Air purge

Use the vacuum pump for air purge to protect environments, and to avoid changing the composition of refrigerant.

5.Additional charge

For additional charging, charge the refrigerant with liquid phase slowly using a gas cylinder. If the refrigerant is charged with gas phase, the composition of refrigerant will change. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. If liquid refrigerant is rapidly charged at once, the compressor may be locked.

NOTE: 1. The R407C is mixed refrigerant which consist of three different kinds of evaporative temperature. As a result, the

R407C occurs the change of composition.

2. Additional refrigerant charge has been changed by change of refrigerant.(R22 ➔ R407C) R22 : <MU-type> 15g/m ➔ R407C : <MU-C18/C24TV> 20g/m

4

2

Remote control receiving section

Air cleaning filter(option)

Deodorizing filter(option)

Front panel

Grille

(When the grille is open)

1 5 1 2 2 1 1 1

1

2

3

4

5

6

7

8

Installation plate Installation plate fixing screw 4 x 25 mm Remote controller mounting hardware Fixing screw for 3 3.5 x 16 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping) Refrigeration oil

PART NAMES AND FUNCTIONS

INDOOR UNIT

MS-C18TV MS-C24TV -

E1

ACCESSORIES

MS-C18TV MS-C24TV -

E1

OUTDOOR UNIT

MU-C18TV MU-C24TV -

5

E1

REMOTE CONTROLLER

MS-C18TV MS-C24TV -

E1

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF)button

Open the front lid.

ON/OFF

TOO

WARM

PM

AM

TOO

COOL

TEMPERATURE buttons

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

RESET button

TOO

ON/OFF

WARM

COOL

DRY

FAN

VANE

RESET

I FEEL

FAN

MODE

ECONO COOL

6

CLOCK

PM

AM

TOO

COOL

STOP

START

HR.

MIN.

OFF-TIMER button

ON-TIMER button

HR. button

MIN. button

(TIME SET button)

CLOCK SET button

VANE CONTROL button

3

Indoor model

Function

Power supply

Capacity Dehumidification Air flow(High) Power outlet Running current Power input Auxiliary heater Power factor Starting current Fan motor current

Model Winding resistance(at20:) Dimensions WOHOD Weight Air direction Sound level (High) Fan speed (High) Fan speed regulator Thermistor RT11(at25:) Thermistor RT12(at25:) Outdoor model Air flow Compressor motor current Fan motor current Model Output Winding resistance(at20:) Model Winding resistance(at20:) Dimensions WOHOD Weight Sound level(High) Fan speed(High) Fan speed regulator Refrigerant filling capacity(R407C) Refrigerating oil (Model)

kW

R/h

K /h

A A

W

A(kW)

%

A A

"

mm

kg

dB

rpm

k" k"

K /h

A A

W

"

mm

kg dB

rpm

kg

cc

Cooling

Single phase

230V, 50Hz

—

WHT-BLK 183.8 BLK-RED 250.5 1,015O320O190

14

5

3 10 10

850o605o290

1100 (NEO22)

MS-C24TV -

E1

6.4

3.1

816

25

12.7

2,840

97 84

0.29

2.25

RA4V27-EE

45

1,260

MU-C24TV -

E1

11.86

0.55

NE-47VMHHT

2,200 C-R 0.67 C-S 2.02

RA6V60-AC

WHT-BLK 81.1 BLK-RED 102.2

BLK-YLW 92.2

61 53

873

2

1.85

MS-C18TV -

E1

5.1

2.4

756

15

9.3

2,100

98 50

0.25

2.43

RA4V27-EF

42

1,180

MU-C18TV -

E1

2370

8.66

0.39

PE-33VPEHT

1,500 C-R 1.08 C-S 2.18

RA6V50-OG

WHT-BLK 116.4

BLK-RED 111.0

48 52

845

1

1.10

Electrical

data

Fan

motor

Special

remarks

Compressor

Electrical

data

Fan

motor

Special

remarks

Capacity

Coefficient of performance(C.O.P)

Capacity

Cooling

Single phase

230V, 50Hz

—

WHT-BLK 183.8 BLK-RED 250.5 1,015O320O190

14

5

3 10 10

2322

850o605o290

1400 (NEO22)

SPECIFICATION

NOTE: Test conditions are based on JIS C 9612.

Cooling : Indoor DB 27°C / WB 19°C

Outdoor DB 35°C / WB 24°C

7

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

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

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

42

SPL(dB(A)) LINE

NOTCH

High

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

45

SPL(dB(A)) LINE

NOTCH

High

NOISE CRITERIA CURVES

MS-C18TV -

E1

MU-C18TV -

E1

NOTCH

High

SPL(dB(A)) LINE

52

Test conditions, Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

90

80

70

NC-70

60

NC-60

50

NC-50

40

NC-40

30

NC-30

APPROXIMATE

20

THRESHOLD OF HEARING FOR CONTINUOUS

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

NOISE

10

63 125 250 500 1000 2000 4000 8000

NC-20

BAND CENTER FREQUENCIES, Hz

MS-C24TV -

E1

MU-C24TV -

E1

NOTCH

High

SPL(dB(A)) LINE

53

Test conditions, Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

90

80

70

60

50

40

30

APPROXIMATE

20

THRESHOLD OF HEARING FOR CONTINUOUS

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

NOISE

10

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

8

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

5

OUTLINES AND DIMENSIONS

MS-C18TV MS-C24TV -

E1

INDOOR UNIT

320

Wireless remote controller

MU-C18TV MU-C24TV -

E1

OUTDOOR UNIT

58

162

995

1015

19

19077550

Power supply cord Lead to right 2m Lead to left 1m

150 648 217

60

40

Installation plate

Air in

4holes 11✕20

450 450

Air out

100mm or more

Indoor unit

352438

5190

Installation plate

Liquid line [8-0.5m Gas line [12-0.43m

{

Insulation [50 O.D

[28 I.D

Drain hose [16 Insulation [28

100mm or more

Unit : mm

20

254

3 297

Wall hole [75

100mm or more

Drainage hole [16.2

35

90

248

Air in

605

Drainage 3holes [33

292

20

355

350

Air in

Air out

500 850

183

20

50

74

157

290

30

100

310

345

161

500mm or more

Service panel

Liquid refrigerant pipe joint

Refregerant pipe (flared) [6.35(MU-C18TV) [9.52(MU-C24TV)

35-

30-

Gas refregerant pipe joint

Refregerant pipe (flared) [15.88

350mm or more

9

6

SYMBOL

RT12

TB

52C

SYMBOL

IC141

MF

MV NR11 RT11

SYMBOL

C11

DSAR

F11 F12

HIC1

NAME

NAME NAME INDOOR FAN CAPACITOR SURGE ABSORBER FUSE(3.15A) THERMAL FUSE(93°C) DC / DC CONVERTER

HYBRID IC INDOOR FAN MOTOR(INNER FUSE) VANE MOTOR VARISTOR ROOM TEMPERATURE THERMIST OR

INDOOR COIL THERMISTOR TERMINAL BLOCK CONTACTOR

MF

BLK

WHT

RED ORN

N

230V~

BLU

4

BLU

WHT

BLK

RED

C1

TB

WHT

ORN

F

C2

RED

WHT

1 2 3

GRN/YLW

FROM

INDOOR UNIT

CONNECTING

C

S

R

MC

2

CIRCUIT BREAKER

50Hz

230V~

BRN

DSAR

GRN/YLW

LD1

REMOTE CONTROLLER

3 1

DISPLAY P.C. BOARD

101

CN

102

CN

151

CN

BLU

RECEIVER P.C. BOARD

MV

5

F11

33

BLU

~/N 230V

CORD

POWER SUPPLY

TO OUTDOOR UNIT

CONNECTING

BRN

L

N

GRN/YLW

TB

52C

BRN

2

4

3

CN201

1

2

F12

WHT

BLU

BLU BLU

TRANS

HIC1

111

CN

4 2 1

C11

CN211

BLK

WHT

GRY RED

RT11

MF

3

121

CN

112

NR11

IC141

RT12

YLW

BRN

ELECTRONIC CONTROL P.C. BOARD

PE

WIRING DIAGRAM

MS-C18TV -

INDOOR UNIT

E1

MODEL WIRING DIAGRAM

NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate. /: Terminal block, : Connector

MU-C18TV -

OUTDOOR UNIT

SYMBOL

C1

NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

C2

2.Use copper conductors only. (For field wiring)

3. Symbols below indicate. /: Terminal block, : Connector

E1

MODEL WIRING DIAGRAM

COMPRESSOR CAPACITOR OUTDOOR FAN CAPACITOR

NAME

SYMBOL

F

MC

FUSE(2A) COMPRESSOR(INNER PROTECTOR)

NAME NAME

10

SYMBOL

MF

TB

OUTDOOR FAN MOTOR(INNER PROTECTOR) TERMINAL BLOCK

VG79B066H01

SG79B965H01

MS-C24TV -

E1

INDOOR UNIT

TO OUTDOOR UNIT CONNECTING

230V

~

230V~

POWER SUPPLY CORD ~/N 230V 50Hz

PE

CIRCUIT BREAKER

SYMBOL

C11

DSAR

F11 F12

HIC1

NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.

INDOOR FAN CAPACITOR SURGE ABSORBER FUSE(3.15A) THERMAL FUSE(93°C) DC / DC CONVERTER

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate. /: Terminal block, : Connector

MU-C24TV -

OUTDOOR UNIT

MODEL WIRING DIAGRAM

TB

BLU

BRN

NAME

RED

BLU

WHT

F12

DSAR

WHT

1

GRN/YLW

BLU

2

BLU

1

LD1

SYMBOL

3

N

2 L

GRN/YLW

IC141

MF MV

NR11

RT11

E1

MODEL WIRING DIAGRAM

TB

3

230V~

BLU

N

2

WHT WHT

WHT

CN

102

CN201

3

BLU

1

CN

151

3

MV

DISPLAY P.C. BOARD

5

4 3

CN

ELECTRONIC CONTROL P.C. BOARD

101

3

RECEIVER P.C. BOARD

NAME NAME HYBRID IC INDOOR FAN MOTOR(INNER FUSE) VANE MOTOR VARISTOR ROOM TEMPERATURE THERMIST OR

REDRED

A1/a

TB2

WHT

1

RED

26F1

BLU

C1

F

A2/b

52C

21

52C

REDBLU BLK

HIC1

TRANS

F11

CR

RED

GRY

78

X1

S

MC

R

IC141

NR11

C11

REMOTE CONTROLLER

SYMBOL

RT12

TB

52C

3

X1

5 6

1

BLU

BLK

YLW

BLK

C

CN

112

CN 111

CN

121

CN211

4 2 1

3

BRN YLW GRY WHT RED BLK

RT12

RT11

MF

INDOOR COIL THERMISTOR TERMINAL BLOCK CONTACTOR

VG79B067H01

C2

RED

ORN

WHT

123456

WHT

RED

ORN

MF

FROM INDOOR UNIT CONNECTING

SYMBOL

CR

NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

CR SURGE ABSORBER COMPRESSOR CAPACITOR

C1

OUTDOOR FAN CAPACITOR

C2

FUSE(2A)

F

2.Use copper conductors only. (For field wiring)

3. Symbols below indicate. /: Terminal block, : Connector

NAME

GRN/YLW

SYMBOL

MC MF

TB

TB2

NAME NAME COMPRESSOR (INNER PROTECTOR) OUTDOOR FAN MOTOR (INNER PROTECTOR) TERMINAL BLOCK TERMINAL BLOCK

11

SYMBOL

X1

26F1

52C

FAN MOTOR RELAY THERMOSTAT (AIR FLOW CONTORL) COMPRESSOR CONTACTOR

SG79B964H01

7

REFRIGERANT SYSTEM DIAGRAM

MS-C18TV -

INDOOR UNIT

Indoor heat exchanger

Distributor

Room temperature thermistor RT11

E1

Indoor coil thermistor

Refrigerant pipe [15.88 (Option) (with heat insulator)

RT12

Flared connection

Refrigerant pipe [6.35 (Option)

(with heat insulator)

Stop valve (with service port)

Stop valve

Compressor

Capillary tube [3.0 X [2.0 X 850

Unit:mm

MU-C18TV -

E1

OUTDOOR UNIT

Outdoor heat

Strainer

Refrigerant flow in cooling

exchanger

MS-C24TV -

INDOOR UNIT

Indoor heat exchanger

Distributor

Room temperature thermistor RT11

E1

Indoor coil thermistor

RT12

Refrigerant pipe [15.88 (Option) (with heat insulator)

Stop valve (with service port)

Flared connection

Stop valve

Refrigerant pipe [9.52

(Option)

(with heat insulator)

Compressor

Capillary tube [3.0 X [2.0 X 550

Unit:mm

MU-C24TV -

E1

OUTDOOR UNIT

Outdoor heat exchanger

Strainer

12

Refrigerant flow in cooling

Model

Refrigerant piping

Max. length : m

A

15

Piping size O.D : mm

Length of connecting pipe : m

Indoor unit

Gas 0.43

Liquid 0.5

Gas

15.88

Liquid

6.35

9.52

Outdoor unit

Gas 0

Liquid 0

MS-C18TV -

E1

MU-C18TV - E1 MS-C24TV - E1

MU-C24TV - E1

MAX. REFRIGERANT PIPING LENGTH

MAX. HEIGHT DIFFERENCE

Indoor unit

Refrigerant Piping

w Max. Height difference 5m

w Height difference should be within 5m regardless of which unit, indoor or outdoor position is high.

ADDITIONAL REFRIGERANT CHARGE(R407C : g)

Max.length

A

Outdoor unit

Model

MS-C18TV - E1 MU-C18TV - E1 MS-C24TV - E1 MU-C24TV - E1

Outdoor unit precharged

1,100

1,850

Refrigerant piping length (one way)

7m

0

Calculation : Xg=20g/mx(Refrigerant piping length (m)-7)

10m

60

15m

160

13

Wet and dry-bulb thermometers

Dry-bulb thermometers

8

PERFORMANCE CURVES

MS-C18TV - MU-C18TV MS-C24TV - MU-C24TV -

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions. Since 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

Rated voltage : 207 ~ 253V

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature :°CWB (2) Indoor outlet air wet-bulb temperature :°CWB (3) Outdoor intake air dry-bulb temperature :°CDB (4) Total input :W

Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page 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.

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 intake 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 dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of room.

5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL 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.

,50Hz

E1E1

Cooling

}

INDOOR UNIT

OUTDOOR UNIT

14

12.2

15 20

50

25 60

30 70

35(:)

(%)

0.3

0.4

0.5

0.6

0.7

7.0

6.0

5.0

4.0

3.0

18 32

230V

15 20

50

25 60

30 70

35(:)

(%)

7.0

8.0

9.0

10.0

11.0

12.0

230V

18

32

7.0

6.0

5.0

4.0

3.0

230V

15 20

50

25 60

30 70

35(:)

(%)

0.3

0.4

0.5

0.6

0.7

18 32

230V

15 20

50

25 60

30 70

35(:) (%)

8.0

9.0

10.0

11.0

12.0

13.0

14.0

18

32

11.2

10.1

9.1

8.2

7.2

14.9

13.5

12.2

11.0

9.8

8.6

MS-C18TV - E1

MS-C24TV - E1

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation

11

Both indoor and outdoor unit are under the same temperature/humidity condition.

Dry-bulb temperature

20 25

Relative humidity(%)

50 60

30 70

22

Air flow should be set at MAX.

33

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/ff[Gauge])

(kgf/F[Gauge])(MPa[Gauge])

Outdoor low pressure

Ambient temperature(˚C)Ambient humidity(%)

MU-C18TV -

E1

MU-C18TV -

Outdoor unit current(A)

Ambient temperature(˚C)Ambient humidity(%)

E1

(kgf/F[Gauge])(MPa[Gauge])

Outdoor low pressure

E1

MU-C24TV -

Ambient temperature(˚C)Ambient humidity(%)

Outdoor unit current(A)

Ambient temperature(˚C)Ambient humidity(%)

15

MU-C24TV -

E1