Midea MLCAC-UTSM-2010-10, MOUB-36HDN1-R, MOU-48HDN1, MOUB-48HDN1-R, MOUB-36HDN1-Q Service Manual

MIDEA LCAC

50Hz R410A DC Inverter

Service Manual

2011

MLCAC-UTSM-2010-10 Contents

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

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

Part 3 Outdoor Units ......................................................................................................... 67

Part 4 Installation .............................................................................................................. 96

Part 5 Control ................................................................................................................... 107

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

Contents i

MLCAC-UTSM-2010-10 General Information

Part 1

General Information

1. Model Names of Indoor/Outdoor Units ........................... 2

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

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

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

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

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

General Information 1

Model Names of Indoor/Outdoor Units MLCAC-UTSM-2010-10

Model Names of Indoor/Outdoor Units

1.1 Indoor Units

R410A (capacity multiplied by 1000Btu/h)

Type Function 36 48
Four-way cassette Cooling and heating √ √
Duct Cooling and heating √ √
Ceiling & floor Cooling and heating √ √

1.2 Outdoor Units

Model of outdoor unit and corresponding indoor unit

Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units

MOUB-36HDN1-Q Rotary DC Inverter GUANGZHOU MITSUBISHI

MOUB-36HDN1-R Rotary DC Inverter GUANGZHOU MITSUBISHI

MOU-48HDN1 Rotary DC Inverter GUANGZHOU MITSUBISHI

MOUB-48HDN1-R Rotary DC Inverter GUANGZHOU MITSUBISHI

MTB-36HWDN1
MUB-36HRDN1
MCC-36HRDN1

MTB-48HWDN1
MUB-48HRDN1
MCC-48HRDN1

2 General Information

MLCAC-UTSM-2010-10 External Appearance

External Appearance

2.1 Indoor Units

Duct

Ceiling & Floor

Four-way Cassette

2.2 Outdoor Units

MOUB-36HDN1-R

MOUB-36HDN1-Q,

MOU-48HDN1, MOUB-48HDN1-R

General Information 3

Nomenclature MLCAC-UTSM-2010-10

Nomenclature

1.1 Indoor Unit

M U B - 18 H R D N1

Refrigerant Type
N1 R410A

DC Inverter

Control Mode
R Remote Control

Function Code
C cooling Only
H cooling & Heating

Capacity (¡ Á1000Btu/h)

Product Series
A First Time Design B Second Time Design
C Third Time Design

3.2 Outdoor Unit

M O U D - 60 H D N1- R

Product Category
C Cassette Type
T Duct Type
U Ceiling & Floor Type
H High Static Pressure Duct Type

Midea

Power Supply
R 380~415V, 3N, 50Hz

-- 220~240V, 1N, 50Hz

Refrigerant
N1 R410A

DC Inverter

Function Code
C cooling only H cooling & heating

Capacity (¡ Á1000Btu/h)

Product Series
A Time A Designed B Time B Designed

C Time C Designed D

F Console Type

Time D Designed

Universal Outdoor Unit
O Outdoor unit U Universal

Midea

4 General Information

MLCAC-UTSM-2010-10 Features

Features

4.1 Universal outdoor unit design
Indoor unit with the same capacity can match with the same outdoor unit.

4.2 High efficiency and energy saving.

Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole

series can easily reach A-class.

4.3 Low noise and low starting current.

Thanks to the DC inverter technology, the system can work with low noise, and very small starting

current.

4.4 Intelligent refrigerant adjustment technology.

Throttle part is made up of capillary and electronic expansion valve (EXV). The outdoor unit can

output the most accurate capacity in any condition.

4.5 Working in cooling mode under -15℃.
Outdoor unit built-in with low ambient kit, it can control the outdoor unit’s fan and cooling can be

performed throughout the year for computer rooms, banquet halls, etc. Wide operation range
covers outdoor temperatures as low as -15℃ for cooling.

4.6 Indoor & outdoor unit’s power supply is separate.

4.7 All indoor units have network control function.

4.8 All indoor units have Auto-restart function.

General Information 5

Indoor Units MLCAC-UTSM-2010-06

Part 2

Indoor Units

Four-way Cassette Type ....................................................... 7

Duct Type ............................................................................. 20

Ceiling & Floor Type ........................................................... 31

6 Indoor Units

MLCAC-UTSM-2010-10 Four-way Cassette Type

Four-way Cassette Type

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

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

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

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

5. Air Velocity and Temperature Distributions ............... 14

6. Electric Characteristics ................................................ 15

7. Sound Levels ................................................................ 15

8. Accessories ................................................................... 16

9. The Specification of Power .......................................... 17

10. Field Wiring ................................................................... 18

Four-way Cassette Type 7

Features MLCAC-UTSM-2010-10

1. Features

(1) Low operation noise

—Streamline plate ensures quietness
—Creates natural and comfortable environment

(2) Efficient cooling——Equal, fast and wide range cooling

(3) Excellent performance. The optimal evaporator & sufficient airflow volume guarantees the excellent

capacity

(4) The adoption of the most advanced 3- Dimensional Screw fan

—Reduces the air resistance passing through
—Smoothes the air flow
—Makes air speed distribution to the heat exchange uniform

(5) Fresh air makes life healthier and more comfortable.

(6) Drainage pump can take up the condenser water to 750mm.

(7) Ultra thin machine body to easy installation and maintenance. 18K~24K:230mm, 36~48K:300mm.

8 Four-way Cassette Type

MLCAC-UTSM-2010-10 Features

(8) Different color panels for choose: White、Gray、Blue、Black

(9) Swing angle of louver

1) Add one more swing motor, one motor driving two louvers. Controlling the interspace of each part,
minimizing the angle loss.

2) The swing angle of the first louver are 40~42 degrees and the second louver are 37~38 degrees.
New evaporator and inner configuration designed can acquire high heat-exchanger effect.

(10) More strengthening rib design around the panel, preventing the distortion for the panel.

(11) New outlet frame design to make the phenomena of coagulation great improvement: prevent the

condensing water from damaging the air guide strip.

(12) Adding rib on the panel of fan outlet, which can avoid the air outlet direct flow to people.

(13) 4 speeds available, optional super high fan speed design suitable for the large building over 3m high.

(14) Adding digital tube displaying on the display board. LED can display the Error Code to make the

malfunction checking easier.

Four-way Cassette Type 9

Features MLCAC-UTSM-2010-10

(15) Reserve spaces for air side-outlet, it is available to connect duct pipe hence air supplying from the four

sides to nearby small room..

(16) The connecting pipe and drop height is higher. Max. pipe length up to 50m（refer to ①）, and Max. drop
height up to 30m（refer to ②）.

(17) Optimal design, smaller Control Box, Space saving and convenient for wiring,
Using fire resistance galvanized steel for E-box material. Metal box make the control part more stable and
prevent damaging.

(18) 360°air flow panel : 360°air flow delivery ensures uniform airflow distribution(optional)

10 Four-way Cassette Type

MLCAC-UTSM-2010-10 Dimensions

2. Dimensions

Unit: mm

MODEL(Btu/h) A B C H
36000 300 Ф15.9 Ф9.5 >330
48000 300 Ф15.9 Ф9.5 >330

Four-way Cassette Type 11

Service Space MLCAC-UTSM-2010-10

3. Service Space

12 Four-way Cassette Type

MLCAC-UTSM-2010-10 Wiring Diagrams

4. Wiring Diagrams

MCC-36HRDN1、MCC-48HRDN1

Four-way Cassette Type 13

Air Velocity and Temperature Distributions MLCAC-UTSM-2010-10

5. Air Velocity and Temperature Distributions

Airflow velocity

High pressure switch

T5

Discharge temp. sensor

Oil s epar ator

Filter

Compressor

Low pressure

Condenser

Ambient temp. sensor

4-way valve

Oil return
Capillary

Filter

Low pressure l iqui d
accumulator

switch

Condenser temp. sensor

T3

Filter

T4

Outdoor unit

Electronic
expansion valve

Capillary

Filter

Evaporator

Evaporator temp. se nsor

Room temp. sensor

Indoor uni t

T2

T1

14 Four-way Cassette Type

MLCAC-UTSM-2010-10 Electric Characteristics

6. Electric Characteristics

Power

Supply

Model

MCC-36HRDN1 50 220-240 198 254 15
MCC-48HRDN1 50 220-240 198 254 15

Remark:
MFA: Max. Fuse Amps. (A)

Indoor Unit

Hz Voltage Min Max MFA

7. Sound Levels

Model

MCC-36HRDN1 44 42 41
MCC-48HRDN1 44 42 41

H M L

Noise level dB(A)

Four-way Cassette Type 15

Accessories MLCAC-UTSM-2010-10

8. Accessories

Name Shape Quantity

INSTALLATION FITTINGS

Tubing & Fittings

Installation paper board

Soundproof / insulation sheath

Connecting pipe group 1

1

2

Drainpipe Fittings

Remote controller & Its
Frame

Others

Installation accessory
(The product you have
might not be provided the
following accessories

Out-let pipe sheath

Out-let pipe clasp 1

Drain joint 1

Seal ring 1

Remote controller & Its Frame

Remote controller holder 1

Mounting screw(ST2.9×10-C-H) 2

Alkaline dry batteries (AM4)

Owner's manual 1

Installation manual 1

Expansible hook

Installation hook

Orifice

1

1

2

4

4

1

16 Four-way Cassette Type

MLCAC-UTSM-2010-10 The Specification of Power

9. The Specification of Power

Four-way Cassette Type 17

Field Wiring MLCAC-UTSM-2010-10

10. Field Wiring

Wiring chart

18 Four-way Cassette Type

MLCAC-UTSM-2010-10 Field Wiring

Four-way Cassette Type 19

Duct Type MLCAC-UTSM-2010-10

Duct Type

1. Features ......................................................................... 21

2. Dimensions .................................................................... 22

3. Service Space ................................................................ 23

4. Wiring Diagrams ........................................................... 24

5. Static Pressure .............................................................. 25

6. Electric Characteristics ................................................ 25

7. Sound Levels ................................................................ 26

8. Accessories ................................................................... 27

9. The Specification of Power .......................................... 28

10. Field Wiring ................................................................... 29

20 Duct Type

MLCAC-UTSM-2010-10 Features

1. Features

● New structure design.

● Built-in drainage pump (Optical).

● Two air intake ways: from below or rear (standard).

● Wire controller is standard.

● Three speeds indoor unit.

● Fresh air inlet hole is reserved.

Duct Type 21

Dimensions MLCAC-UTSM-2010-10

2. Dimensions

Capacity

(KBtu)

MTB-36HWDN1 1140 270 775 710 65 933 35 179 1035 260 20 1180 490

MTB-48HWDN1 1200 300 865 800 80 968 40 204 1094 288 45 1240 500

22 Duct Type

Outline

dimension(mm)

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

Air outlet o

pening size

Air return

opening size

Size of outline dimension mounted

plug

MLCAC-UTSM-2010-10 Service Space

3. Service Space

Ensure enough space required for installation and maintenance.

All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:

Duct Type 23

Wiring Diagrams MLCAC-UTSM-2010-10

4. Wiring Diagrams

MTB-36HWDN1 MTB-48HWDN1

D M

Y/G

TR

XS1
XP1

BLAC K

BLUE

RED

L

IND OOR POWE R

CN 11

CN 1

C N13

CN2

P3

P2

CH

Ｈ

BR OWN

BLAC K

N

WHIT E

NOT E:PL EASE USE SHI ELDE R WI RE F OR C OMM .BUS WIR E,

202070390385

CODE

FM
DM
CS
H/P2
CH /P3

T1

T2B

T2
XP 1-4
XS 1-4
TR

ENC 2

' 0～F' o f t he E NC2 an d 'O N/ OFF '

respectively.

respectivel y.

ENC1

T ITLE

FAN MOTO R

PU MP MOTOR

WATER L EVEL SWI TCH
HIGH FAN

SUPER HI GH FAN
R OOM TEMP .
O UTER PIP E TE MP.

MIDDLE P IPE TEMP .

CON NECT ORS

TRANSFOR MER

FUNCTION OF SWITCH

SWITCH

SWITCH

SWITCH
NUMBER

4

5
7
8

9

(FOR INDOOR UNIT
ADDRESS)

(FOR CCM UNIT
ADDRESS)

(FOR POWER)

PO W E R

5300W
5600W
7100W
9000W

10500W
140 00W
160 00W

SW 1

of t he Sw1 m ean th e add res se s

of the different units,

S1
S2

'0～F' of t he S2 and 'ON/OFF'

of the S1 mean the addresses
of the different net units,

S3

WHITE

ENC1

SW1

MAIN BOARD

CN 4

XP4 X S4

Y/G

FM

ENC2

BLA CK

DIS PLAY BOAR D

CN1 0

CN9

S2

S1

33CN

C S

BLA CK

CN1 7

CN7

CN 6

23CN

CN5

E RROR
O UTPU T

CN5

CN 3

W HITE

T1

ON/OFF

REMOTE
CONTROL

BLAC K

XP3 XS3

T2

CN2CN 4

XY

TO CCM
CO MM.BUS

XS2

XP2

T2B

CN 1

EPQ

TO OUTD OOR
COM M.BU S

TO WIRE
CONTROLLER

EALARM

24 Duct Type

MLCAC-UTSM-2010-10 Static Pressure

5. Static Pressure

MTB-36HWDN1 MTB-48HWDN1

Pa

90

80

70

60

50

40

External static pressure (Pa)

30

20

10

1200

1100

Super high speed

High speed

1800

Air volume(m

Mid speed

Low speed

2000

3

/h)

220016001400

2400

Pa

120

110

100

90

80

70

60

50

40

External static pressure (Pa)

30

20

10

1000

1300

19001600

Air vo lume(m

Super high speed

High speed

Mid speed

Low speed

2500

2200

3

/h)

2800

3100

6. Electric Characteristics

Model

MTB-36HWDN1 50 220-240 207 253 15

MTB-48HWDN1 50 220-240 207 253 15

Remark:

MFA: Max. Fuse Amps. (A)

Hz Voltage Min. Max. MFA

Indoor Unit Power Supply

Duct Type 25