Midea MFM-24ARN1-Q Bedienungsanleitung

SERVICE MANUAL

MIDEA AIRCONDITIONER

FLOOR STANDING TYPE

Model:

MFM-24ARN1-Q / MOF-24HN1-QB8

MFM-48ARN1-R / MOU-48HN1-RB6W

MFM-60ARN1-R / MOUL-60HN1-R

DM16‐01.01.25en

Floor Standing MFM DM16-01.01.25en

Service manual 2

CONTENTS

1 .Safety Precautions .................................................................................................................. 3

2 .Specifications .......................................................................................................................... 5

3. Dimension ................................................................................................................................ 7

4.Refrigerant cycle diagram ....................................................................................................... 9

5 . Wiring diagram ..................................................................................................................... 11

6．Installation details ............................................................................................................... 14

7．External view and display ................................................................................................... 33

8．Operation characteristics ................................................................................................... 35

9．Electronic function .............................................................................................................. 36

10.Trouble shooting .................................................................................................................. 43



DM16-01.01.25en Floor Standing MFM

3 Service manual

1 .Safety Precautions

1.1 Precaution

To prevent injury to the user or other people and property damage, the following instructions must

be followed.

Incorrect operation due to ignoring instruction will cause harm or damage.

Before service unit, be sure to read this service manual at first.

1.2 Installation

For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized service center.

Do not disassemble or repair the product by yourself.

Sharp edges could cause injury, be especially careful of the case edges and the fins on the

condenser and evaporator.

Be sure the installation area does not deteriorate with age.

Take care to ensure that power cable could not be pulled out or damaged during operation.

Do not place anything on the power cable.

Do not plug or unplug the power supply plug during operation.

Do not store or use flammable gas or combustible near the product.

When flammable gas leaks, turn off the gas and open a window for ventilation before turn the

product on.

If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the

power supply cable as soon as possible.

When the product is soaked (flooded or submerged), contact an Authorized service center.

Be caution that water could not enter the product.

Turn the main power off when cleaning or maintaining the product.

When the product is not be used for a long time, disconnect the power supply plug or turn off the

breaker.

1.3 Caution

Always check for gas (refrigerant) leakage after installation or repair of product.

Install the drain hose to ensure that water is drained away properly.

Keep level even when installing the product.

Do not install the product where the noise or hot air from the outdoor unit could damage the

neighborhoods.

Use two or more people to lift and transport the product.

Do not install the product where it will be exposed to sea wind (salt spray) directly.

1.4 Operational

Do not expose the skin directly to cool air for long periods of time. (Do not sit in the draft).

Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a

consumer air conditioner, not a precision refrigerant system.

Do not block the inlet or outlet of air flow.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

Do not touch the metal parts of the product when removing the air filter. They are very sharp.

Floor Standing MFM DM16-01.01.25en

Service manual 4

Do not step on pr put anything on the product. (outdoor units)

Always insert the filter securely. Clean the filter every two weeks or more often if necessary.

Do not insert hands or other object through air inlet or outlet while the product is operated.

Do not drink the water drained from the product.

Use a firm stool or ladder when cleaning or maintaining the product.

Replace the all batteries in the remote control with new ones of the same type. Do not mix old and

mew batteries or different types of batteries.

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not

use the remote of the batteries have leaked.

DM16-01.01.25en Floor Standing MFM

5 Service manual

2 .Specifications

Model MFM-24ARN1-Q MFM-48ARN1-R MFM-60ARN1-R

Outdoor MOF-24HN1-QB8 MOU-48HN1-RB6W MOUL-60HN1-R

Power supply V-ph-Hz 220-240-1-50 380-415-3-50 380-3-50

Cooling

Capacity

Btu/h 24500 47900 57900

kW 7,18 14,04 16,97

Input W 2700 5150 6500

Rated current A 13 9.0 11.0

EER W/W 2.66 2.73 2.61

Heating

Capacity

Btu/h 27500+7500 52000+12000 62000+12000

kW 8.06+2.20 15.24+3.52 18.17+3.52

Input W 2500+2200 5350+3700 5300+3700

Rated current A 12+10 9.2+5.3 10.0+5.3

COP W/W 3.22 2,85 3,43

Max. input consumption W 3500+2200 5800+3700 8200+3700

Max. current A 16.6+10 10.5+5.3 14.7+5.3

Starting current A 66 66 67

Compressor

Model PA290G2CS-4MU1 C-SBN373H8D C-SBN453H8D

Type ROTARY SCROLL SCROLL

Brand GMCC PANASONIC PANASONIC

Capacity Btu/h 24771/24959 48109 55957/69264

Input W 2430/2600 4750 5750/6750

Rated current(RLA) A 11.65/12.6 8.22 9.77/9.84

Locked rotor Amp(LRA) A 66 66 67

Thermal protector ----- ---- ----

Thermal protector position INTERNAL INTERNAL INTERNAL

Capacitor uF 50 - - - -

Refrigerant oil/oil charge ml

ESTER OIL

VG74/850

FV68S / 1700 FV68S/1700

Indoor fan

motor

Model YDK75-8 YDK120-8T YDK160-8

Input W 166/145 288/276 347/308

Capacitor uF 5.0 6.5 9.0

Speed(Hi/Mi/Lo)or (Hi/Lo) r/min 540/440 550 / 480 615 / 530

Indoor coil

a.Number of rows 2 2 3

b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 25.4x22

c.Fin spacing mm 1.3 1.4 1.5

d.Fin type (code)

Hydrophilic

aluminium

Hydrophilic

aluminium

Hydrophilic

aluminium

e.Tube outside dia.and type mm Φ7,innergroove tube Φ7,innergroove tube

Φ9.52,innergroove

tube

f.Coil length x height x width mm 405x735x26.74 422x966x26.74 484x812x66

g.Number of circuits 6 10 6

Indoor air flow (Hi/Lo) m3/h 1100/900 1700/1480 2250/1950

Floor Standing MFM DM16-01.01.25en

Service manual 6

Indoor noise level (Hi/Lo) dB(A) 47/43 52/49 54/51

Indoor unit

Dimension(W*D*H) mm 500x315x1700 550x418x1824 600x455x1934

Packing (W*D*H) mm 1805x615x425 1935x655x540 2040x745x595

Net/Gross weight Kg 38.6 / 50 55.8 / 70 68.5/88.3

Outdoor fan

motor

Model YDK53-6C YDK65-6F(B) x2 YDK65-6F(B) x2

Input W 136 162 162

Capacitor uF 3.0 3.5 3.5

Speed r/min 800 765 765

Outdoor coil

a.Number of rows 2 2 2

b.Tube pitch(a)x row pitch(b) mm 22x19.05 22x19.05 22x19.05

c.Fin spacing mm 1.4 1.6 1.6

d.Fin type (code) Hydrophilic aluminium

e.Tube outside dia.and type mm

Φ7.94,innergroove

tube

Φ7.94,innergroove

tube

Φ7.94,innergroove

tube

f.Coil length x height x width mm 770x660x38.1 837x1100x38.1 837x1100x38.1

g.Number of circuits 4 8 8

Outdoor noise level dB(A) 60 64 64

Outdoor unit

Dimension(W*D*H) mm 845x320x700 900x350x1170 900x350x1170

Packing (W*D*H) mm 965x395x755 1032x443x1307 1032x443x1307

Net/Gross weight Kg 50 / 53.3 97 / 107 96 / 107

Refrigerant type g R410A/1800g R410A/3300g R410A/3200g

Design pressure MPa 4.2/1.5 4.2/1.5 4.2/1.5

Refrigerant

piping

Liquid side/ Gas side mm(inch)

Φ9.52/Φ15.9(3/8"/5/

8")

Φ12.7/Φ19(1/2"/3/4"

)

Φ12.7/Φ19(1/2"/3/4"

)

Max. refrigerant pipe length m 20 20 20

Max. difference in level m 10 10 10

Connection wiring mm2 2.5(Optional) 2.5(Optional) 2.5(Optional)

Plug type - - - - - -

Operation temperature Ԩ 17-30 17-30 17-30

Room

temperature

Indoor(cooling/ heating) Ԩ 17-32/0-30 17-32/0-30 17-32/0-30

Outdoor(cooling/heating) Ԩ 18-43/-7-24 18-43/-7-24 18-43/-7-24

Application area m2 33-48 64-94 77-113



DM16-01.01.25en Floor Standing MFM

7 Service manual

3. Dimension

3.1 Indoor Unit



Dimension

Mode W(mm) D(mm) H(mm)

MFM-24ARN1-Q 500 315 1700

MFM-48ARN1-R 550 418 1824

MFM-60ARN1-R 600 455 1934



Floor Standing MFM DM16-01.01.25en

Service manual 8

3.2 Outdoor Unit



Dimension

Mode W(mm) D(mm) H(mm) W1(mm) A(mm) B(mm)

MOF-24HN1-QB8 845 320 700 908 560 335



 

Dimension

Mode W(mm) D(mm) H(mm) W1(mm) A(mm) B(mm)

MOU-48HN1-RB6W 900 350 1170 985 590 378

MOUL-60HN1-R 900 350 1170 985 590 378

DM16-01.01.25en Floor Standing MFM

9 Service manual

4.Refrigerant cycle diagram

MOF‐24HN1‐QB8

INDOOR OUTDOOR

LIQUID SIDE

GAS SIDE

HEAT

EXCHANGE

(EVAPORATOR)

HEAT

EXCHANGE

(CONDENSER)

COMPRESSOR

2-WAY VALVE

3-WAY VALVE

CHECK VALVE

(Heating Model only)

CAPILIARY TUBE

4-WAY VALVE

(Heating Model only)

COOLING

HEATING

T2 Evaporator

temp. sensor

T1 Room temp.

sensor

T3 Condenser

temp. sensor



Floor Standing MFM DM16-01.01.25en

Service manual 10

MOU‐48HN1‐RB6W  MOUL‐60HN1‐R

LIQUID SIDE

GAS SIDE

HEAT

EXCHANGE

(EVAPORATOR) HEAT

EXCHANGE

(CONDENSER)

Compressor

2-WAY VALVE

3-WAY VALVE

4-WAY VALVE

COOLING

HEATING

T2 Evaporator

temp. sensor

T1 Room temp.

sensor

T3 Condenser

temp. sensor

T5 Discharge temp. sensor

T4 Ambient

temp. sensor

INDOOR OUTDOOR

Oil return Capillary

Oil separator

Low pressure

switch

High pressure switch

CHECK VALVE

(Heating Model only)

CAPILIARY TUBE



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