Midea MOU-36HN1-R, MOU-24HN1-Q, MOU-48HN1-R, MOUA-60HN1-R, MHF-18HWN1-Q Service Manual

Contents i

R410A ON/OFF SERIES

Service Manual 2013

LEUS-B-1306

Content

Contents i

Part 1 General Information ................................................................... 1

Part 2 Indoor Units ................................................................................ 6

Part 3 Outdoor Units ........................................................................... 63

Part 4 Installation ................................................................................ 78

Part 5 Electrical Control System .....................................................104

※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

General Information

General Information 1

Part 1

General Information

1. Model Lists ................................................................................................................ ....... 2

2. External Appearance ....................................................................................................... 3

2.1 Indoor Units ............................................................................................................... 3

2.2 Outdoor Units ............................................................................................................ 3

3. Nomenclature ................................................................................................................... 4

4. Features ............................................................................................................................ 5

Model Lists

2 General Information

1. Model Lists

1.1 Indoor Units

R410A Capacity multiplied by 1000Btu/h

Type Function 18 24 30 36 48 60

A5 High static pressure duct Cooling and heating

● ● ● ● ● ●

Ceiling & Floor Cooling and heating

● ● ●

Super-slim 4-way cassette Cooling and heating

● ● ● ● ●

High static pressure duct Cooling and heating

●

1.2 Outdoor Units

Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units

Heat Pump

MOU-18HN1-Q ROTARY CMCC

MHF-18HWN1-Q
MCD-18HRN1-Q

MOU-24HN1-Q ROTARY CMCC

MHF-24HWN1-Q
MCD-24HRN1-Q
MHG-24HWN1-Q

MOU-30HN1-Q ROTARY CMCC MHF-30HWN1-Q

MOU-30HN1-R ROTARY CMCC MHF-30HWN1-R

MOU-36HN1-Q SCROLL SANYO

MHF-36HWN1-Q
MUE-36HRN1-Q

MOU-36HN1-R SCROLL SANYO

MHF-36HWN1-R
MUE-36HRN1-R
MCD-36HRN1-R

MOU-48HN1-R SCROLL SANYO

MHF-48HWN1-R
MUE-48HRN1-R
MCD-48HRN1-R

MOUA-60HN1-R SCROLL SANYO

MHF-60HWN1-R
MUE-60HRN1-R
MCD-60HRN1-R

External Appearance

General Information 3

2. External Appearance

2.1 Indoor Units

A5 High static pressure duct

Ceiling & floor type

Super-slim 4-way Cassette High static pressure duct

2.2 Outdoor Units

Single fan outdoor unit

Double fan outdoor unit

Nomenclature

4 General Information

3. Nomenclature

3.1 Indoor Unit

M U B T- 36 H R D N1- Q RC4

Energy Efficiency Code

Power Supply
Q 220~240V,1N, 50Hz
R 380~420V, 3N, 50Hz
N 220~230V, 1N, 60Hz
D 220V~, 3N, 60Hz

C 380~420V,3N,60Hz

Refrigerant
N1 R410A -- R22

D DC Inverter -- On-Off
F Full DC

Control Mode
W Wired Control E Electric Control
M Mechanical Control R Remote Control

Function Code
C Cooling Only H Cooling & Heating

A Cooling & Heating+PTC

Capacity (×1000Btu/h)

T Tropical Condition

-- T1 Condition

Designed Time
A Time A Designed B Time B Designed
C Time C Designed D Time D Designed

Product Category
C Cassette Type V AHU Type
T Duct Type F Console Type
U Ceiling & Floor Type
H High Static Pressure Duct Type

Midea

3.2 Outdoor Unit

M O U T- 36 H D N1- R RC4

Energy Efficiency Code

Power Supply
Q 220~240V,1N, 50HZ
R 380~420V, 3N, 50Hz
N 220~230V, 1N, 60Hz
D 220V~, 3N, 60Hz

C 380~420v,3N,60HZ

Refrigerant
N1 R410A -- R22

D DC Inverter -- On-Off
F Full DC

Function Code
C Cooling Only H Cooling & Heating
A Cooling & Heating+PTC

Capacity (×1000Btu/h)

T Tropical Condition

-- T1 Condition

U Side Discharge Outdoor Unit
V Top Discharge Outdoor Unit
S Centrifugal Fan Outdoor Unit

O Outdoor unit

Midea

Features

General Information 5

4. Features

4.1 High quality coils:

The coil is constructed of advanced inner grooved copper tube and aluminum fins.

4.2 Anti-rust, 500 hours salt spray test.

4.3 Low operation sound level: Well-known stable and quiet running fan motor.

4.4 Well-known compressor.

4.5 Compact design: Smaller dimension and larger stuffing capacity.

4.6 Universal outdoor unit design.

4.7 Optional air outlet grille: plastic type and wire type.

Wire type Plastic type Plastic type

4.8 Optional low temperature cooling module.

4.9 R410A environment friendly refrigerant.

Indoor Units

6 Indoor Units

Part 2

Indoor Units

A5 High Static Pressure Duct Type ..................................... 7

Ceiling & Floor Type ........................................................... 25

Super-slim Cassette Type .................................................. 35

High Static Pressure Duct Type ......................................... 52

A5 High Static Pressure Duct Type

Duct Type 7

A5 High Static Pressure Duct Type

1. Features ...................................................................................................... 8

2. Dimensions ............................................................................................... 11

3. Service Space ........................................................................................... 12

4. Wiring Diagrams ....................................................................................... 13

5. Static Pressure ......................................................................................... 18

6. Electric Characteristics ........................................................................... 19

7. Sound Levels ............................................................................................ 20

8. Accessories .............................................................................................. 21

9. The Specification of Power ..................................................................... 22

10. Field Wiring ............................................................................................. 23

Features

8 Duct Type

1. Features

1.1 Installation accessories: (Optional)

 Front Board, Canvas Air Passage, Filter, Panel, for easy installation

1.2 Easy Installation: Two air inlet styles (Bottom side or Rear side)

 Air inlet from rear is standard for all capacity; air inlet from bottom is optional.
 The size of air inlet frame from rear and bottom is same, it’s very easy to move the cover from bottom to

rear side, or from rear to the bottom, in order to matching the installation condition.

1.3 Easy maintenance

 Clean the filter (Optional, standard product without filter)

It is easy to draw out the filter from the indoor unit for cleaning, even the filter is installed in rear side or
bottom side.

 Replace the motor or centrifugal fan

Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with
centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily.

Front Board

Canvas Air Passage Filter Panel

Air intake from rear (Standard)

Air intake from bottom (Optional)

Features

Duct Type 9

1.4 Reserved remote on-off and central control ports

 Reserved remote on-off ports and central control ports, can connect the cable of an on-off controller or a

central controller to realize remote on-off control function or group control function.

1.5 Built-in drain pump (Optional):

 Built-in drain pump can lift the water to 750mm upmost. It’s convenient to install drainage piping under

most space condition.

Motor

Blower Housing

Ventilated Panel

Remote on-off ports

Central control ports

750mm upmost

Features

10 Duct Type

1.6 Built-in display board

 The standard indoor unit can be controlled by wired controller.
 There is a display board with a receiver in the E-box. Move out the display, and fix it in other place, even

in the distance of 10m. The unit will realized remoter control.

 The wired controller and the display board can display the error code or production code when the chips

detect some failure.

Display

Wired Controller (Standard)

Remote Controller (Optional)

Dimensions

Duct Type 11

2. Dimensions

H

G

E

F
A

B

D
C

L

M

Capacity

(KBtu)

Outline

dimension(mm)

Air outlet

opening size

Air return

opening size

Size of outline dimension

mounted plug

A B C D E F G H I J K L M

18 920 210 635 570 65 713 35 119 815 200 80 960 350

24 920 270 635 570 65 713 35 179 815 260 20 960 350

30/36 1140 270 775 710 65 933 35 179 1035 260 20 1180 490

48/60 1200 300 865 800 80 968 40 204 1094 288 45 1240 500

Service Space

12 Duct Type

3. Service Space

Ensure enough space required for installation and maintenance.

Wiring Diagrams

Duct Type 13

4. Wiring Diagrams

MHF-18HWN1-Q

Wiring Diagrams

14 Duct Type

MHF-24HWN1-Q

Wiring Diagrams

Duct Type 15

MHF-30HWN1-Q、MHF-36HWN1-Q

Wiring Diagrams

16 Duct Type

MHF-30HWN1-R、MHF-36HWN1-R、MHF-48HWN1-R、MHF-60HWN1-R

Wiring Diagrams

Duct Type 17

Static Pressure

18 Duct Type

5. Static Pressure

18,000 Btu/h 24,000 Btu/h

Mid speed

High speed

External static pressure (Pa)

14001300

1200

1100

1000

Pa

90

80

70

60

50

40

30

20

10

Low speed

700

Super high speed

800

900

1500

3

Air volume(m /h)

Mid speed

High speed

External static pressure (Pa)

14001300

1200

1100

1000

Pa

90

80

70

60

50

40

30

20

10

Low speed

700

Super high speed

800

900

1500

1600

3

Air volume(m /h)

30,000 Btu/h 36,000 Btu/h

Mid speed

High speed

External static pressure (Pa)

2000

1800

1600

1400

1200

Pa

90

80

70

60

50

40

30

20

10

Low speed

600

Super high speed

800

1000

2200

2400

3

Air volume(m /h)

100

Mid speed

High speed

External static pressure (Pa)

2000

1800

1600

1400

1200

Pa

180

160

140

120

100

80

60

40

20

Low speed

600

Super high speed

800

1000

2200

2400

3

Air volume(m /h)

48,000 Btu/h 60,000 Btu/h

Mid speed

High speed

External static pressure (Pa)

3200

3000

2800

2600

2400

Pa

180

160

140

120

100

80

60

40

20

Low speed

800

Super high speed

1000

2200

3400

3600

3

Air volume(m /h)

2000

1600

Mid speed

High speed

External static pressure (Pa)

3200

3000

28002600

2400

Pa

180

160

140

120

100

80

60

40

20

Low speed

800

Super high speed

1000

2200

3400

3600

3

Air volume(m /h)

2000

1600

Electric Characteristics

Duct Type 19

6. Electric Characteristics

Model

Indoor Units Power Supply

Hz Voltage Min. Max. MFA

MHF-18HWN1-Q 50 220-240V 198V 254V 16

MHF-24HWN1-Q 50 220-240V 198V 254V 25

MHF-30HWN1-Q 50 220-240V 198V 254V 30

MHF-30HWN1-R 50 380-420V 342V 440V 20

MHF-36HWN1-Q 50 220-240V 198V 254V 30

MHF-36HWN1-R 50 380-420V 342V 440V 20

MHF-48HWN1-R 50 380-420V 342V 440V 20

MHF-60HWN1-R 50 380-420V 342V 440V 20

Notes:

MFA: Max. Fuse Amps. (A)

Sound Levels

20 Duct Type

7. Sound Levels

Suction

Discharge

Microphone

1.4m

Concealed Duct Type

DuctDuct

Model

Noise level dB(A)

H M L

MHF-18HWN1-Q 42 38 36

MHF-24HWN1-Q 46 40 38

MHF-30HWN1-Q 50 48 45

MHF-30HWN1-R 50 48 45

MHF-36HWN1-Q 52 48 45

MHF-36HWN1-R 49 47 44

MHF-48HWN1-R 51 49 46

MHF-60HWN1-R 50 48 44

Accessories

Duct Type 21

8. Accessories

Name Shape Quantity

Tubing & Fittings

Soundproof/insulation sheath

2

Binding tape

1

Seal sponge

1

Drainpipe Fittings

Drain joint

1

Seal ring

1

Wire controller Wire controller

1

others

Owner's manual

1

Installation manual

1

The Specification of Power

22 Duct Type

9. The Specification of Power

Model

18000 Btu/h 24000 Btu/h

30000-36000

Btu/h

30000-60000

Btu/h

Power

Phase 1-Phase 1-Phase 1-Phase 3-Phase

Frequency and Volt

220-240V,50Hz 220-240V,50Hz 220-240V,50Hz 380-415V, 50Hz

Circuit Breaker/Fuse(A) 20/16 40/25 50/30 25/20

Indoor unit power wiring(mm²) 3×2.5 3×2.5 3×4.0 5×2.5

Indoor/out­door
connecting
wiring(mm²
)

Ground wiring 2.5 2.5 4.0 2.5

Outdoor unit power wiring 3×2.5 3×2.5 3×4.0 5×2.5

Strong electric signal 2×1.0 3×1.0 3×1.0 3×1.0

Weak electric signal 2×0.75/2×0.5 2×0.2 2×0.2

Field Wiring

Duct Type 23

10. Field Wiring

MHF-18HWN1-Q

Field Wiring

24 Duct Type

MHF-24HWN1-Q、MHF-30HWN1-Q、MHF-36HWN1-Q

MHF-30HWN1-R、MHF-36HWN1-R、MHF-48HWN1-R、MHF-60HWN1-R

Ceiling & Floor Type

Ceiling & Floor Type 25

Ceiling & Floor Type

1. Features ........................................................................... 26

2. Dimensions ...................................................................... 27

3. Service Space .................................................................. 28

4. Wiring Diagrams ............................................................. 29

5. Electric Characteristics .................................................. 31

6. Sound Levels ................................................................... 31

7. Accessories ..................................................................... 32

8. The Specification of Power ............................................ 32

9. Field Wiring ..................................................................... 33

Features

26 Ceiling & Floor Type

1. Features

1.1. New design, more modern and elegant appearance.

1.2. Convenient installation

--The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow

--It is especially useful when installation of an air conditioner in the center of the ceiling is impossible
due to a structure such as one lighting.

1.3. Two direction auto swing (vertical & horizontal) and wide angle air flow,

--Air flow directional control minimizes the air resistance and produces wilder air flow to vertical
direction.

--The range of horizontal air discharge is widened which secures wider air flow distribution to provide
more comfortable air circulation no matter where the unit is set up

1.4. Three level fan speed, more humanism design, meets different air-supply requirement.

1.5. New foam drain pan with plastic-spraying inner surface

1.6. Easy operation.

1.7. Remote control and optional wired control method.