Midea Super DC Service Manual
Energy Related Products
SUPER DC INVERTER SERIES
Service Manual 2017
Contents i
Contents
Part 1 General Information .................................................................................................................1
Part 2 Indoor Units ................................................................................................................................6
Part 3 Outdoor Units ........................................................................................................................111
Part 4 Installation ............................................................................................................................. 124
Part 5 Electrical Control System .................................................................................................. 162
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.
Contents i
General Information
Part 1
General Information
1. Model Lists .................................................................................... 2
2. External Appearance ..................................................................... 3
2.1 Indoor Units .............................................................................................................................3
2.2 Outdoor Units..........................................................................................................................4
3. Nomenclature ................................................................................ 5
General Information 1
Model Lists
Type
Function
12
16
18
24
30
36
42
48
55
Super slim cassette
Cooling and heating
●
● ● ● ● ●
●
A5 Duct
Cooling and heating
● ●
● ● ● ● ●
●
A6 Duct
Cooling and heating
●
● ● ● ● ●
●
Ceiling-floor
Cooling and heating
●
● ● ● ● ●
●
Four-way
cassette(compact)
Cooling and heating
● ●
Console
Cooling and heating
● ●
M floor-standing
Cooling and heating
● ● ●
●
GA floor-standing
Cooling and heating
●
Universal Outdoor unit Model
Compressor type
Compressor Brand
Matched indoor units
MOB30U-12HFN1-QRD0W
Rotary
GMCC
MCA3U-12HRFN1-QRD0W
MTBU-12HWFN1-QRD0W
MFAU-12HRFN1-QRC8W
MOB30U-16HFN1-QRC8W
Rotary
GMCC
MFA-16HRFN1-QRC8W
MOB30U-18HFN1-QRD0
Rotary
GMCC
MCA3-18HRFN1-QRD0
MCD-18HRFN1-QRD0
MTB-18HWFN1-QRD0
MUE-18HRFN1-QRD0
MTI-18HWFN1-QRD0
MOCA30U-24HFN1-QRD0
Rotary
GMCC
MCD-24HRFN1-QRD0
MTB-24HWFN1-QRD0
MUE-24HRFN1-QRD0
MFM-24HRFN1-QRD0
MTI-24HWFN1-QRD0
MOD30U-30HFN1-QRD0
Rotary
GMCC
MCD-30HRFN1-QRD0
MTB-30HWFN1-QRD0
MUE-30HRFN1-QRD0
MTI-30HWFN1-QRD0
MOD30U-36HFN1-QRD0
Rotary
GMCC
MCD-36HRFN1-QRD0
MTB-36HWFN1-QRD0
MUE-36HRFN1-QRD0
MTI-36HWFN1-QRD0
MFM-36HRFN1-QRD0
MOD30U-36HFN1-RRD0
Rotary
GMCC
MOD30U-42HFN1-QRD0
Rotary
GMCC
MCD-42HRFN1-QRD0
MTB-42HWFN1-QRD0
MUE-42HRFN1-QRD0
MTI-42HWFN1-QRD0
MOD30U-42HFN1-RRD0
Rotary
GMCC
MOE30U-48HFN1-QRD0
Rotary
GMCC
MCD-48HRFN1-QRD0
MTB-48HWFN1-QRD0
MUE-48HRFN1-QRD0
MTI-48HWFN1-QRD0
MFM-48HRFN1-QRD0
MOE30U-48HFN1-RRD0
Rotary
GMCC
MOE30U-55HFN1-RRD0
Rotary
GMCC
MCD-55HRFN1-QRDO
MTB-55HWFN1-QRD0
MUE-55HRFN1-QRD0
MTI-55HWFN1-QRD0
MFGA-55ARFN1-RRD0(B)
MFM-55ARFN1-RRD0
1. Model Lists
1.1 Indoor Units
R410A (capacity multiplied by 1000Btu/h)
1.2 Outdoor Units
General Information 2
External Appearance
Super slim cassette
Duct
Ceiling-Floor
Compact Four-way cassette
Console
M Floor-standing
GA Floor-standing
2. External Appearance
2.1 Indoor Units
General Information 3
External Appearance
Single fan outdoor unit
Double fan outdoor unit
2.2 Outdoor Units
General Information 4
Nomenclature
M U B T - 36 H R D N1- Q RC4
E n e rg y E ff ic ie n cy C o d e
P o w e r S u p ply
Q 2 20 ~ 24 0V ,1 N, 5 0H z
R 3 80 ~ 42 0 V , 3N , 5 0 H z
N 2 20 ~ 23 0 V , 1N , 6 0 H z
D 2 20 V ~ , 3N , 6 0 H z
C 38 0 ~4 2 0V ,3 N ,6 0 H z
R e fr i g era n t
N1 R 4 10 A -- R 2 2
D D C In v erte r - - O n -O ff
F F ull D C
C o n tr o l M o d e
W W ire d C o n tro l E E le ctr ic C on trol
M M ec h an ica l C o ntro l R R e m ote C on trol
F u n c tio n C o d e
C C o o ling O n ly H C oolin g & H ea ting
A C oo lin g & H e a ting + P TC
C ap a c ity (×1 0 00 B tu /h )
T T ro pica l C on ditio n
-- T 1 C on d itio n
D e s ig n ed T im e
A T im e A D es ig n ed B T im e B D e s ig n ed
C T im e C D e s ig n ed D T im e D D e s ig n ed
P ro d u ct C a te g o ry
C C a s sette T yp e V A H U T ype
T D u c t T y pe F C on s o le T ype
U C e ilin g & Floo r T y pe
H H ig h S t a tic P re ssu re D uc t T y p e
M ide a
M O T4 D 3 0 U - 36 H D N1- R R C 4
E n erg y E f f ic ie nc y C o d e
P o w e r S u pp ly
Q 22 0~ 24 0 V ,1 N , 5 0 H Z
R 38 0~ 4 20 V, 3N , 5 0H z
N 22 0~ 2 30 V, 1N , 6 0H z
D 22 0V ~, 3 N , 6 0 H z
C 3 80 ~4 2 0v ,3 N,6 0 H Z
R efrige ra n t
N1 R 41 0 A -- R 2 2
D D C Inv erte r -- O n -O ff
F F ull D C
F un ctio n C o d e
C C o olin g O n ly H C o olin g & H e a tin g
A C o olin g & H ea ting +P TC
C a p a c it y (×1 0 0 0B tu/h )
U S id e D isc h arg e O utdo or U nit
V T op D is ch a rge O u td oo r U nit
S C e n tr ifug al F an O u td oo r U nit
O u td oo r S iz e C od e
T T rop ic a l C on d ition
-- T 1 C on ditio n
O O utd o or un it
M id e a
3. Nomenclature
3.1 Indoor Unit
3.2 Outdoor Unit
General Information 5
Indoor Units
Part 2
Indoor Units
Super Slim Cassette Type ............................................... 7
A5 Duct Type ................................ ................................. 22
A6 Duct Type ................................ ................................. 38
Ceiling & Floor Type ...................................................... 52
Four-way Cassette Type (Compact) .............................. 66
Console Type ................................ ................................ 76
M Floor-standing Type .................................................. 88
GA Floor-standing Type ...............................................100
Indoor Units 6
Super Slim Cassette Type
Super Slim Cassette Type
1. Features ...................................................................... 8
2. Dimensions ................................................................11
3. Service Space............................................................ 12
4. Wiring Diagrams ................................ ........................ 13
5. Air Velocity Distributions (Reference Data) ............... 14
6. Electric Characteristics ............................................. 17
7. Sound Levels............................................................. 18
8. Accessories ................................ ............................... 19
9. The Specification of Power........................................ 20
10. Field Wiring ............................................................. 21
Indoor Units 7
Features
Ionizer generator
connector
Ventilation motor
connector
1. Features
1.1 Overview
Compact design, super slim body size, less space requiring in installation
Each louver can be separately controlled, more comfort air blowing is possible.
Auto-lifting panel design, more convenient to clean and maintain the filter. (optional)
1.2 Fresh air intake function
Fresh air fulfills air quality more healthy and comfortable.
Ventilation motor is optional to increase the effect of fresh air.
1.3 Optional ionizer generator
Ionizer generator is optional to get refreshing air to your room.
Ionizer can be switched on or off by remote controller.
When pressing the Clean Air button on the remote controller, Ionizer will work and the indicator light on
display board will shine.
1.4 External air duct design
Reserve external air duct, more flexible for the air supply.
Indoor Units 8
Features
Draining Pump
1.5 Built-in draining pump
Due to the improvement of structure, more convenient to repair or replace the draining pump.
Built-in draining pump to make sure condensed water drain out reliably.
1.6 Terminals for alarm lamp and long-distance on-off controller connection are
standard
Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human
control.
Indoor Units 9
Features
Alarm lamp
Long-distance on-off controller
1.7 Twins Combination(18k-30k)
The units can be installed as Twin systems: one outdoor unit can connect with two indoor units. The
indoor units can be combined in any of the different available ratings.
Indoor Units 10
Dimensions
840
840
950
950
C
Te s t m ou th &
Te s t co v e r
D r a in h o le
32
W iring c o n ne c tio n p o rt
680
780
780
680
136
126
91
196
132
A
A
B
A
A
B
A
A
B
A
B
S e r v ic e h o le fo r
drainin g pum p
Fre s h a ir in take
75
55
80
80
4-in sta ll h a nger
G a s s id e
Liq uid s ide
E -p a rts box
135
90
P a n el
B o d y
92929292
D
D
92 92
D
D
D
D
92
9292
92
92 92
92
92
D
D
Unit: mm
Model
A B C D MCD-18HRFN1-QRD0
160
75
205
50
MCD-24HRFN1-QRD0
MCD-30HRFN1-QRD0
MCD-36HRFN1-QRD0
MCD-42HRFN1-QRD0
160
95
245
60
MCD-48HRFN1-QRD0
MCD-55HRFN1-QRDO
160
95
287
60
2. Dimensions
Indoor Units 11
>1000m m
>1000mm
>1000mm
>1000mm
780(Hook-location)
880(Ceiling hole)
>2500mm
out let intle t outlet
ground
Chart 1
No te:
880mm
Hook
B
Panel
Chart 2
Body
Bolt M6X12
180 00-24000Btu/h(R 22) Series A 26 0mm
36000-48000Btu/h(R 22) Series A 330mm
≥
≥
No te:
180 00- 24000B tu/h(R 22) Seri es B= 240mm
3 60 00-48000Btu /h(R 22) Series B= 310mm
Service Space
3. Service Space
Indoor Units 12
Wiring Diagrams
4. Wiring Diagrams
MCD-18HRFN1-QRD0 MCD-24HRFN1-QRD0 MCD-30HRFN1-QRD0 MCD-36HRFN1-QRD0
MCD-42HRFN1-QRD0 MCD-48HRFN1-QRD0 MCD-55HRFN1-QRDO
Indoor Units 13
Air Velocity Distributions (Reference Data)
5. Air Velocity Distributions (Reference Data)
18-24K:
Cooling:
Heating:
Indoor Units 14
Air Velocity Distributions (Reference Data)
30-42K:
Cooling:
Heating:
Indoor Units 15
Air Velocity Distributions (Reference Data)
48-55K：
Cooling:
Heating:
Indoor Units 16
Electric Characteristics
Model
Indoor Unit
Power
Supply
Hz
Voltage
Min
Max
MFA
MCD-18HRFN1-QRD0
50
220-240V
198V
254V
/
MCD-24HRFN1-QRD0
50
220-240V
198V
254V
/
MCD-30HRFN1-QRD0
50
220-240
198
254
/
MCD-36HRFN1-QRD0
50
220-240V
198V
254V
/
MCD-42HRFN1-QRD0
50
220-240V
198V
254V / MCD-48HRFN1-QRD0
50
220-240V
198V
254V
/
MCD-55HRFN1-QRDO
50
220-240V
198V
254V
/
6. Electric Characteristics
Notes:
MFA: Max. Fuse Amps. (A)
Indoor Units 17
Sound Levels
1 . 4 m
M ic r o p h on e
Model
Noise Power dB(A)
Noise level dB(A)
H M L
MCD-18HRFN1-QRD0
56
46
41
37
MCD-24HRFN1-QRD0
62
46
42
39
MCD-30HRFN1-QRD0
65
53
48
44
MCD-36HRFN1-QRD0
65
56
52
48
MCD-42HRFN1-QRD0
64
52
40
47
MCD-48HRFN1-QRD0
65
55
51
48
MCD-55HRFN1-QRDO
69
52
49
46
7. Sound Levels
Indoor Units 18
Accessories
Name
Shape
Quantity
Installation Fittings
Installation paper board
1
Tubing & Fittings
Soundproof / insulation sheath
1
Drainpipe Fittings
Out-let pipe sheath
1
Out-let pipe clasp
1
Drain joint
1
Seal ring
1
Remote controller & Its
Frame(The product you
have might not be
provided the following
accessories)
Remote controller & Its Frame
1
Remote controller holder
1
Mounting screw(ST2.9×10-C-H)
2
Remote controller manual
1
Alkaline dry batteries (AM4)
2
Others
Owner's manual
1
Installation manual
1
Installation accessory
(The product you have
might not be provided the
following accessories
Expansible hook
4
Installation hook
4
Orifice 1
8. Accessories
Indoor Units 19
The Specification of Power
Model(Btu/h)
18000~24000
30000
36000
36000
POWER
Phase
1-phase
1-phase
1-phase
3-phase
Frequency and
Voltage
220-240V, 50Hz
220-240V, 50Hz
220-240V, 50Hz
380-415V, 50Hz
POWER WIRING
(mm2)
3×2.5
3×2.5
3×4.0
5×2.5
CIRCUIT BREAKER/Fuse (A)
30/20
40/30
40/30
30/20
Indoor/Outdoor Connecting Wiring
(Weak Electric Signal) (mm2)
2×0.2
2×0.2
2×0.2
2×0.2
Indoor/Outdoor Connecting Wiring
(Strong Electric Signal) (mm2)
3×1.0
3×1.0
3×1.0
3×1.0
Model(Btu/h)
42000~48000
42000~60000
POWER
Phase
1-phase
3-phase
Frequency and Voltage
220-240V, 50Hz
380-415V, 50Hz
Power Wiring (mm2)
3×4.0
5×2.5
Circuit Breaker/Fuse(A)
40/35
30/25
Indoor/Outdoor Connecting Wiring(Weak Electric Signal) (mm2)
2×0.2
2×0.2
Indoor/Outdoor Connecting Wiring(Strong Electric Signal) (mm2)
3×1.0
3×1.0
9. The Specification of Power
Indoor Units 20
Field Wiring
10. Field Wiring
Indoor Units 21
A5 Duct Type
A5 Duct Type
1. Features .................................................................... 23
2. Dimensions ............................................................... 26
3. Service Space............................................................ 27
4. Wiring Diagrams ................................ ........................ 28
5. Static Pressure .......................................................... 30
6. Electric Characteristics ............................................. 33
7. Sound Levels............................................................. 34
8. Accessories ................................ ............................... 35
9. The Specification of Power........................................ 36
10. Field Wiring ............................................................. 37
Indoor Units 22
Features
Filter
Panel
Air intake from rear (Standard)
Air intake from bottom (Optional)
Front Board
1. Features
1.1 Installation accessories: (Optional)
Front Board, 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 Fresh air intake function(Optional for 18~60k)
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more healthy and
comfortable.
1.4 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.
Indoor Units 23
Features
Motor
Blower Housing
Ventilated Panel
Remote on-off ports
Central control ports
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.
1.5 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.
1.6 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.
Indoor Units 24
Features
Displa
750mm upmost
Wired Controller (Standard)
Remote Controller (Optional)
1.7 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 2m. The unit will realized remoter control.
The wired controller and the display board can display the error code or protection code when the chips
detect some failure.
1.8 Twins Combination
The units can be installed as Twin systems: one outdoor unit can connect with two indoor units. The
indoor units can be combined in any of the different available ratings.
Indoor Units 25
Dimensions
A
C
B
D
J
I
K
A ir filte r ( op tion a l )
air in le t fro m re ar s id e
air in le t fro m b otto m s id e
FE
G
H
E le c tric co ntr o l b o x
A ir filte r ( op tion a l )
L
4-in stall h an g er
G as side
Liqu id s id e
M
W1
W2
H1
H2
25 D rain co nn e ctin g pipe
( for p u m p )
Te st m o uth & T es t co v er
Fre s h air in ta k e
25 D rain p ip e
25 D rain p ip e
Note: standard product without filter Unit: mm
Model
Outline dimension(mm)
Air outlet opening size
Air return opening size
Size of
install
hanger
Size of refrigerant pipe
A B C D E F G H I J K L M
H1
H2
W1
W2
MTBU-12HWFN1-QRD0W
700
210
635
570
65
493
35
119
595
200
80
740
350
120
143
95
150
MTB-18HWFN1-QRD0
MTB-24HWFN1-QRD0
920
270
635
570
65
713
35
179
815
260
20
960
350
120
143
95
150
MTB-30HWFN1-QRD0
1140
270
775
710
65
933
35
179
1035
260
20
1180
490
120
143
95
150
MTB-36HWFN1-QRD0
MTB-42HWFN1-QRD0
MTB-48HWFN1-QRD0
MTB-55HWFN1-QRD0
1200
300
865
800
80
968
40
204
1094
288
45
1240
500
175
198
155
210
2. Dimensions
Indoor Units 26
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:
Indoor Units 27
Wiring Diagrams
4. Wiring Diagrams
MTBU-12HWFN1-QRD0W
MTB-18HWFN1-QRD0
Indoor Units 28
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