
MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
1
Content
Part 1 General Information ........................................... 2
Part 2 Indoor Units ........................................................ 6
Part 3 Outdoor Units ................................................... 91
Part 4 Installation ...................................................... 119
Part 5 Control ............................................................ 151

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Part 1 General Information
1. Model Names of Indoor/Outdoor Units ............................. 3
2. External Appearance ......................................................... 4
3. Nomenclature ................................................................ ..... 5

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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1. Model Names of Indoor/Outdoor Units
1.1 Model Names of Units with Cooling only:
Mid-static
pressure duct
type
High-static
pressure
duct type
1.2 Model Names of Units with Cooling and heating:
Mid-static
pressure duct
type
High-static
pressure duct
type

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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2. External Appearance
2.1 Indoor Units
MTA-76C(H)RN1
MTA-96C(H)RN1
MFA-76C(H)RN1
MFA-96C(H)RN1
MTA-120CRN1\MTA-120HRN1
MTA-150CRN1
MOV-76C(H)N1-C
MOV-96C(H)N1-C
MOV-150C(H)N1-C (MOV-76C(H)N1-C*2)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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3. Nomenclature
3.1 Indoor unit:
3.2 Outdoor unit:
None:R22;N1:R410a
R:Remote Controller
Function Code: C: Cooling
H: Cooling and Heating
Cooling Capacity (*76 kBtu/h)
Product Series
A: 1st time design
B: 2nd time design
Indoor Units
T: Duct type
F: Floor-standing type
H: High static pressure
Midea
Design times
None:R22;
N1:R410a
Function Code:
C: Cooling Only
H: Heat pump
Cooling Capacity (76 kBtu/h)
Universal Outdoor Unit
Outdoor Unit
Midea

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Part 2 Indoor Units
Duct Type ............................................................................... 7
Floor-standing Type ............................................................. 59

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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Duct Type
1. Features .............................................................................. 8
2. Specifications .................................................................... 9
3. Dimensions ...................................................................... 12
4. Service Space .................................................................. 14
5. Piping Diagrams .............................................................. 16
6. Wiring Diagrams .............................................................. 16
7.Capacity Table ................................................................... 21
8. Static Pressure ................................................................. 34
9. Electric Characteristics ................................................... 37
10. Sound Levels ................................................................. 38
11. Exploded View ................................................................ 39
12. Troubleshooting ............................................................. 50
13. Accessories .................................................................... 58

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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1. Features
1. Nested in the ceiling, space-saving and noble.
2. High capacity of cooling/heating, efficient, and energy-saving.
3. The air outlet is laid out according to you desire.
4. Economic and convenient installation
1) Several diffusers branch off from an indoor unit, adjusting the room temperature, which makes many
rooms to be air-conditioned with only one indoor unit.
2) All models feature thin design making them applicable to ceiling pocket that tends to be shallow
5. Way of air intake and inserting air filter
6. It is suitable be used for office, hospital, commercial place and home, the air conditioner will create the
comfortable and elegance environment for you.

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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2. Specifications
Indoor air flow(Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty.(20’/40’/40’HQ)
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Indoor air flow(Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty per (20'/40'/40'HD)
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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Indoor air flow (Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty per (20'/40'/40'HD)
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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3. Dimensions
3.1 MTA-76C(H)RN1, MTA-96C(H)RN1, MHB-76C(H)RN1, MHB-96C(H)RN1

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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3.2 MTA-120C(H)RN1

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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3.3 MTA-150C(H)RN1

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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4. Service Space
Electric control box
Inspection hole
≥
6
0
0
m
m
≥
5
0
0
m
m
Inspection
Canvas adapter
Muffle
Air outlet
Air inlet
Air filter
hole
Muffle

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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5. Refrigerant cycle diagram
5.1 Cooling only: MTA-76CRN1, MTA-96CRN1, MTA-120CR N1, MTA-150CR N1
MHB-76CRN1, MHB-96CRN1
Discharge temp. sensor
HP Switch
Compressor
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
LP Switch
T4
T2
T3
Cooling
Indoor
heat-exchanger
5.2 Cooling and heating: MTA-76HRN1, MTA-96HRN1, MTA-120HRN1
MHB-76HRN1, MHB-96HRN1
Discharge temp. sensor
HP Switch
Compressor
4-way valve
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
Check valve
LP Switch
T4
T2
T3
Heating
Cooling
Indoor
heat-exchanger
Capillary
Capillary

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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6. Wiring Diagrams
6.1 MTA-76CRN1, MTA-96CRN1, MHB-76CRN1, MHB-96CRN1
INDOOR POWER
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
W
H
I
T
E
RED RED
WHITE
SLOW
HIGH
LOW
BLUE
TO OUTDOOR
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN C ONTROL BO ARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
Y
E
L
L
O
W
BLACK
B
L
A
C
K
R
E
D
B
L
U
E
Y
E
L
L
O
W
Y/G
RED
WHITE
B
L
U
E
B
L
U
E
N-LINE
R
E
D
BLACK
CN1-3,CN7,CN8, CN10,
CN11,CN15,CN20

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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6.2 MTA-120CRN1, MTA-150CRN1
INDOOR POWER
B
L
A
C
K
Y
E
L
L
O
W
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
R
E
D
WHITE
RED RED
WHITE
WHITE
(GRAY)
WHITE
SLOW
HIGH
LOW
BLUE
BLUE
RED
TO OUTDOOR
Y/G
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN CONTROL BOARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
L
U
E
Y
E
L
L
O
W
B
L
A
C
K
B
L
A
C
K
R
E
D
R
E
D
B
L
U
E
B
L
U
E
Y
E
L
L
O
W
Y
E
L
L
O
W
Y/G
WHITE
R
E
D
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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6.3 MTA-76HRN1, MTA-96HRN1, MHB-76HRN1, MHB-96HRN1
INDOOR POWER
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
WHITE
RED
RED
WHITE
SLOW
HIGH
LOW
R
E
D
TO OUTDOOR
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN C ONTROL BO ARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
Y
E
L
L
O
W
B
L
A
C
K
R
E
D
B
L
U
E
Y
E
L
L
O
W
Y/G
WHITE
RED
BLUE
B
L
U
E
B
L
U
E
N-LINE
BLACK
BLACK
YELLOW
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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6.4 MTA-120HRN1
INDOOR POWER
B
L
A
C
K
Y
E
L
L
O
W
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
R
E
D
WHITE
RED RED
WHITE
WHITE
(GRAY)
WHITE
SLOW
HIGH
LOW
BLUE
BLUE
RED
TO OUTDOOR
Y/G
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN CONTROL BOARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
L
U
E
Y
E
L
L
O
W
B
L
A
C
K
B
L
A
C
K
R
E
D
R
E
D
B
L
U
E
B
L
U
E
Y
E
L
L
O
W
Y
E
L
L
O
W
Y/G
WHITE
R
E
D
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7. Capacity Table
7.1 Cooling:
7.1.1 MTA-76CRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.2 MTA-76HRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.3 MTA-96CRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.4 MTA-96HRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.5 MTA-120CRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.6 MTA-120HR
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.7 MTA-150CRN1
Gross Cooling Capacity (kW)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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8. Air flow rate- Static pressure curve
MTA-76(H)CRN1
0
20
40
60
80
100
120
140
160
3000 3250 3500 3750 4000 4250 4500 4750
0
20
40
60
80
100
120
140
160
3500 3750 4000 4250 4500 4750 5000 5250 5500
Static Pressure (Pa)
Med
Lo
0
20
40
60
80
100
120
140
160
180
200
4250 4750 5250 5750 6250 6750 7250 7750

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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MTA-150(H)CRN1
0
20
40
60
80
100
120
140
160
180
200
5500 6000 6500 7000 7500 8000 8500 9000
Air Flow (m3/h)
Static Pressure (Pa)
Lo
Med
Hi
0
20
40
60
80
100
120
140
160
180
200
220
3000 3250 3500 3750 4000 4250 4500 4750 5000 5250
0
20
40
60
80
100
120
140
160
180
200
220
3750 4000 4250 4500 4750 5000 5250 5500 5750 6000

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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9. Electric Characteristics
Note:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
IFM: Indoor Fan Motor
kW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
Note:
MCA: Min. Current Amps. (A) TOCA: Total Over-current Amps. (A)
MFA: Max. Fuse Amps. (A) MSC: Max. Starting Amps. (A)
RLA: Rated Locked Amps. (A) OFM: Outdoor Fan Motor
KW: Rated Motor Output (KW) FLA: Full Load Amps. (A)

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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10. Sound Levels
Concealed Duct Type
Suction
Discharge
Microphone
1.4m
Duct
Noise level under three speeds of fan (dB(A))

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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11. Exploded View
11.1 MTA-76CRN1
The left side plate
assembly
Seal plate evaporator
components left
evaporator inputing pipe
ass'y
Components of electronic
control box cover
evaporator input pipe
ass'y
Indoor electronic control
box components
Main control board
assembly

R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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11.2 MTA-76HRN1
The left side plate
assembly
Seal plate evaporator
components left
evaporator inputing pipe
ass'y
Components of electronic
control box cover
evaporator input pipe
ass'y
Indoor electronic control
box components
Main control board
assembly

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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11.3 MTA-96CRN1
The left side plate
assembly
Seal plate evaporator
components left
Enter the evaporator tube
assembly
Components of electronic
control box cover
Evaporator tube
assembly output
Indoor electronic control
box components
Main control board
assembly

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11.4 MTA-96HRN1
The left side plate
assembly
Seal plate evaporator
components left
Enter the evaporator
tube assembly
Components of electronic
control box cover
Evaporator tube
assembly output
Indoor electronic control
box components
Main control board
assembly

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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11.5 MTA-120CRN1
Components of
electronic control box
cover
Inlet pipe ass'y of
evaporator
Outlet pipe ass'y of
evaporator
Evaporator left clapboard
Indoor electronic control
box components
Main control board
assembly

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11.6 MTA-120HRN1
Components of electronic
control box cover
Inlet pipe ass'y of
evaporator
Outlet pipe ass'y of
evaporator
Evaporator left clapboard
Indoor electronic control
box components
Main control board
assembly

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11.7 MTA-150CRN1
Components of electronic
control box cover
evaportaor input pipe
ass'y(II)
evaporator input pipe
ass'y(I)
Evaporator left clapboard
Indoor electronic control
box components
Main control board
assembly

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11.8 MHB-76CRN1
The left side plate
assembly
Seal plate evaporator
components left
evaporator inputing pipe
ass'y
Components of electronic
control box cover
evaporator input pipe
ass'y
Indoor electronic control
box components
Main control board
assembly

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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11.9 MHB-76HRN1
The left side plate
assembly
Seal plate evaporator
components left
evaporator inputing pipe
ass'y
Components of electronic
control box cover
evaporator input pipe ass'y
Indoor electronic control
box components
Main control board
assembly

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11.10 MHB-96CRN1
The left side plate
assembly
Seal plate evaporator
components left
Enter the evaporator
tube assembly
Components of electronic
control box cover
Evaporator tube
assembly output
Indoor electronic control
box components
Main control board
assembly

MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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11.11 MHB-96HRN1
The left side plate
assembly
Seal plate evaporator
components left
Enter the evaporator
tube assembly
Components of electronic
control box cover
Evaporator tube
assembly output
Indoor electronic control
box components
Main control board
assembly

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12. Troubleshooting
PRE-DEF lamp(cooling and heating type)
or fan only lamp(cooling only type)
Infrared signal receiver
Operation lamp
Timer lamp
Alarm lamp
Manual Switch
Remarks
Room temp. sensor error
Evaporator temp. sensor error
Condenser temp. sensor error
Water pump temp. sensor error
The PRO terminal on PCB of
indoor unit without connected to
grounding wire
☆ ☆ ☆ ☆ Manual reset
EEPROM error
Condensing water level full error
Note:
OPT. Light: operation light; TME. Light: timer light;
DEF. Light: defrosting light; ☆: the light flashing.

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13.1 Malfunctions of air conditioner
If any of the following malfunctions occur, stop operation of the air conditioner immediately. Turn off the power
switch, and contact the local after sales service center of manufacturer:
The RUN lamp flashes quickly (2 flash per second).
After turning off the power switch and then turning it on again, the RUN lamp still flashes quickly.
The receiving function of the remote controller fails, or the start/ shutdown operation is abnormal.
The fuse blows out frequently, or the circuit breaker protection occurs frequently.
Obstacles or water enter the air conditioner.
Condensing water leaks from indoor unit.
Other malfunctions occur.

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If the air conditioner fails and does not meet the above phenomena, check the system as the following table:
Operate after power resumes.
Power switch is not connected.
Connect the power supply properly.
Fuse blows out or circuit breaker snaps off.
Replace the fuse or check whether
electric leakage occurs.
The remote controller or the wire controller
fails.
Check the remote controller or wire
controller.
Air flowing
normally but
completely can’t
cooling
Temperature setting is improper.
Temperature setting is higher than the
room temperature in cooling mode. Or
temperature setting is lower than the
room temperature in heating mode.
3-minute protection of compressor.
The unit starts or
stops frequently
The system is lack of refrigerant. Or there is
too much refrigerant in the system.
Fix the leakage places, and charge the
proper quantity of refrigerant.
Air or non-condensable gas exists in the
refrigerant system.
Vacuum the system and charge
refrigerant again.
Repair or replace the compressor.
The voltage is too high or too low.
Install a voltage regulator.
The refrigerant pipe is obstructed.
Locate and replace that part.
The heat exchanger of outdoor unit or indoor
unit is too dirty.
Clean the heat exchanger.
The filter is too dirty.
Air inlet or air outlet of the indoor/ outdoor
unit is blocked.
Remove obstacles to keep well
ventilating.
Doors or windows of the room are open.
Close all the windows and doors.
Directly exposed to sunlight.
Use curtain to obstruct sunlight.
Too many heat sources in the room.
The outdoor ambient temperature is too
high.
The cooling effect is poor but normal.
The system is lack of refrigerant.
Fix the leakage places, and charge the
proper quantity of refrigerant.
Poor heating
effect
The outdoor ambient temperature is lower
than -7℃.
Use an assistance heating device.
Doors or windows of the room are not closed
tightly.
Close the doors and windows properly.
The system is lack of refrigerant.
Fix the leakage places, and charge the
proper quantity of refrigerant.

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The fan speed
cannot be
changed
Check whether the mode marked on the
screen is “AUTO”.
When the “AUTO” mode is selected, the
unit will change the fan speed
automatically.
Check whether the mode marked on the
screen is “DEWET”.
When the “DEWET” mode is selected,
the unit will change the fan speed
automatically. The fan speed can be
selected in “COOLING”,”HEATING”
and ”SUPPLY AIR” mode.
The “ON/OFF”
button of remote
controller do not
work
Check whether the batteries of remote
controller are exhausted.
Replace the batteries.
The “ON/OFF”
Check whether the time set on the timer has
expired.
The “TIMER ON”
lamp extinguishes
Check whether the time set on the timer has
expired.
It comes to the setting time and the unit
stat running automatically.
No receiving
sounds from the
indoor unit even
when the
“ON/OFF” button
is pressed
Check whether the signal transmitter of the
remote controller is properly directed to the
infrared signal receiver of the indoor unit
when the “ON/OFF” button is pressed.
Directly transmit the signal transmitter of
the remote controller to the infrared
signal receiver of the indoor unit, and
then push the “ON/OFF” button twice.
The buttons of the
remote controller
do not work
Check whether the settings are locked.
Push the “LOCK” button again.

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Operation lamp flashes:
All lamps flashing at 5Hz
Judge 1: The PRO terminal on PCB of indoor unit without connecting to grounding wire
Validate: Check whether the PRO terminal on PCB of indoor
unit without connected to grounding wire.
Connect it to grounding wire.
Judge 2: Optical coupler on PCB malfunction
Validate: Check whether the Optical coupler is normal.

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Operation lamp flashes:
Timer lamp flashing at 5Hz
Room temperature sensor malfunction
Judge 1: Check the room temperature sensor
Is break off.
Judge 2: Check the room temperature sensor
is abnormal.
Validate: Check whether the resistance of the
temperature sensor is correct according to Annex 1.
Replace temperature sensor

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Operation lamp flashes:
Replace temperature sensor
Operation lamp flashing at 5Hz
Evaporate temperature sensor is abnormal.
Judge 1: Check evaporate temperature sensor is break off.
Judge 2: Evaporate temperature sensor is abnormal.
Validate: Check whether the resistance of the room
temperature sensor is correct according to Annex 1.
Replace temperature sensor

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Operation lamp flashes:
Defrosting lamp flashing at 5Hz
Condenser temperature sensor malfunction
Judge 1: Check condenser temperature sensor is break off.
Replace temperature sensor
Judge 2: Condenser temperature sensor is abnormal.
Validate: Check whether the resistance of the condenser
temperature sensor is correct according to Annex 1.
Replace temperature sensor

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13. Accessories
Connect to water drainage pipe
Display board subassembly
Connect to control signal
Protective sleeve for refrigerant inlet and
outlet pipes
Remote controller mounting bracket
1 Placed the remote controller

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Floor-standing Type
1. Features ......................................................................................... 60
2. Specifications ................................................................................ 61
3. Dimensions .................................................................................... 62
4. Service Space ................................................................................ 63
5. Refrigerant cycle diagram ........................................................... 64
6. Wiring Diagrams ............................................................................ 65
7. Capacity Tables ............................................................................. 67
8. Electric Characteristics ................................................................. 75
9. Sound Levels ................................................................................. 76
10. Exploded View ............................................................................. 77
11. Troubleshooting .......................................................................... 85
12. Accessories ................................................................................. 90

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1. Features
1. The appearance is novel, luxurious, refined.
2. High capacity of cooling/heating, efficient, and energy-saving.
3. Adopt advanced and high efficient scroll compressor, wide angle and long distance air supply.
4. Remote control standard, screen control optional.
5. Easy installation and maintenance.
6. Suit for hotel, meeting room, airport lounge, etc. public occasion use.

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2. Specifications
Indoor air flow (Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty per 20'/40'/40'HD
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. piping: 7.5m (horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. piping: 7.5m (horizontal)

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3. Dimensions

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4. Service Space
Front view
1
0
c
m
1
0
c
m
Rear
30 cm
No obstacle in front of it

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5. Refrigerant cycle diagram
5.1 Cooling only: MFA-76CR, MFA-96CR
Discharge temp. sensor
HP Switch
Compressor
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
LP Switch
T4
T2
T3
Cooling
Indoor
heat-exchanger
5.2 Cooling and heating: MFA-76HR, MFA-96HR
Discharge temp. sensor
HP Switch
Compressor
4-way valve
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
Check valve
LP Switch
T4
T2
T3
Heating
Cooling
Indoor
heat-exchanger

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6. Wiring Diagrams
6.1 MFA-76CR, MFA-96CR

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6.2 MFA-76HR, MFA-96HR

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7. Capacity Tables
7.1 Cooling:
7.1.1 MFA-76CRN1
Gross Cooling Capacity (kW)

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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

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7.1.2 MFA-76HRN1
Gross Cooling Capacity (kW)

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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

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7.1.3 MFA-96CRN1
Gross Cooling Capacity (kW)

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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

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7.1.4 MFA-96HRN1
Gross Cooling Capacity (kW)

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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)

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8. Electric Characteristics
Note :
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (KW)
FLA: Full Load Amps. (A)
IFM: Indoor Fan Motor
Note:
MCA: Min. Current Amps. (A) TOCA: Total Over-current Amps. (A)
MFA: Max. Fuse Amps. (A) MSC: Max. Starting Amps. (A)
RLA: Rated Locked Amps. (A) OFM: Outdoor Fan Motor
KW: Rated Motor Output (KW) FLA: Full Load Amps. (A)

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9. Sound Levels
Noise level under three speeds of fan (dB(A))

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10. Exploded View
10.1 MFA-76CRN1

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Evaporator input pipe
ass'y
Evaporator input pipe
ass'y
Component I output tube
evaporator
Component II output
tube evaporator
Indoor electric control box
components
Indoor control board
assembly
Auxiliary fan control board
assembly
Display and control box
components
Installation bracket ass'y

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10.2 MFA-76HRN1

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Evaporator input pipe
ass'y
Evaporator input pipe
ass'y
Component I output tube
evaporator
Component II output
tube evaporator
Indoor electric control box
components
Indoor control board
assembly
Auxiliary fan control board
assembly
Display and control box
components
Installation bracket ass'y

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10.3 MFA-96CRN1

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Evaporator input pipe
ass'y
Evaporator input pipe
ass'y
Component I output
tube evaporator
Component II output
tube evaporator
Indoor electric control box
components
Indoor control board
assembly
Auxiliary fan control board
assembly
Display and control box
components
Remote controller holder
ass'y

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10.4 MFA-96HRN1

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Evaporator input pipe
ass'y
Evaporator input pipe
ass'y
Component I output
tube evaporator
Component II output
tube evaporator
Indoor electric control box
components
Indoor control board
assembly
Auxiliary fan control board
assembly
Display and control box
components
Remote controller holder
ass'y

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11. Troubleshooting
Evaporator temp. sensor error
Evaporator temp. too low protection in cooling mode
Evaporator temp. too high protection in heating mode

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11.1 E1 malfunction
Fault of indoor temperature sensor T1
Judge 1: Whether the indoor temperature
sensor T1 is break off.
Judge 2: Whether the indoor temperature
sensor T1 is malfunction.
Validate: Check whether the resistance of
the temperature sensor is correct
according to Annex 1.
Judge 3: PCB is malfunction

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11.2 E2 malfunction
Fault of indoor temperature sensor T2
Judge 1: Whether the indoor temperature
sensor T2 is break off.
Judge 2: Whether the indoor temperature
sensor T2 is malfunction.
Validate: Check whether the resistance of
the temperature sensor is correct
according to Annex 1.
Judge 3: PCB is malfunction

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11.3 P1 malfunction
Under heating mode, T2 is on high
temperature protection
Judge 1: Check whether the evaporator temperature
sensor T2 is break off.
Judge 2: Whether the evaporator temperature sensor
is malfunction.
Validate: Check whether the resistance of the
temperature sensor is correct according to Annex 1.
Replace the temperature sensor
Judge 3: Check whether the outdoor ambient
temperature is too high (more than 24℃)

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11.4 P2 malfunction
Under cooling mode, T2 is on low
temperature protection
Judge 1: Check whether the evaporator temperature
sensor T2 is break off.
Judge 2: Whether the evaporator temperature sensor
is malfunction.
Validate: Check whether the resistance of the
temperature sensor is correct according to Annex 1.
Replace the temperature sensor
Judge 3: Check whether the outdoor ambient
temperature is too low (less than 17℃)

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12. Accessories
Connect to water drainage pipe
Remote controller mounting bracket
1 Placed the remote controller

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Part 3 Outdoor Units
1. Specifications .................................................................. 92
2. Dimension ................................ ........................................ 94
3. Service Space .................................................................. 96
4. Wiring Diagrams .............................................................. 98
5. Electric Characteristics ................................................. 100
6. Operation Limits ............................................................ 101
7. Sound Levels ................................................................. 102
8. Exploded View ............................................................... 103
9. Troubleshooting ............................................................. 115

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1. Specifications
Power supply - 380~415V-3N-50Hz
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Shipping Qty per 20'/40'/40'HD
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent refrigerant piping: 7.5m (horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. piping: 7.5m (horizontal)

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Power supply - 380~400V-3N-50Hz
Type - Copper tube and aluminum fin
Shipping Qty per 20'/40'/40'HD
Notes:
1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent refrigerant piping: 7.5m (horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. piping: 7.5m (horizontal)

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2. Dimension (Unit: mm)
2.1 MOV-76CN1-C, MOV-76HN1-C, MOV-96CN1-C, MOV-96HN1-C

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2.2 MOV-120HN1-C, MOV-120CN1-C

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3. Service Space
3.1 MOV-76CN1-C, MOV-76HN1-C, MOV-96CN1-C, MOV-96HN1-C
MOV-120HN1-C, MOV-120CN1-C
Air outlet
Air inletAir inlet
≥1000 mm
≥1000 mm
≥500 mm
≥1000 mm
≥1000 mm
Note:
1. In case any obstacles exist above the outdoor unit, such obstacles must be 2000mm above the outdoor unit.
2. If miscellaneous articles are piled around the outdoor unit, such articles must be 400mm below the top of the outdoor unit.

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Foundation of the outdoor unit
≥500 mm
≥500 mm
M12 foundation bolt
4 screws for 1 unit

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4. Wiring Diagrams
4.1 MOV-76CN1-C, MOV-96CN1-C, MOV-120CN1-C

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4.2 MOV-76HN1-C, MOV-96HN1-C, MOV-120HN1-C

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5. Electric Characteristics
Remark:
MCA: Min. Current Amps. (A)
TOCA: Total Over-current Amps. (A)
MFA: Max. Fuse Amps. (A)
MSC: Max. Starting Amps. (A)
RLA: Rated Locked Amps. (A)
OFM: Outdoor Fan Motor.
FLA: Full Load Amps. (A)
KW: Rated Motor Output (kW)