Midea MSC-09HRDN1-QD0(E), MSC-12HRDN1-QC6(E), MSH-09HRDN1-QD0(E), MSH-12HRDN1-QC6(E) Service Manual
SERVICE MANUAL
MIDEA AIRCONDITIONER
DC INVERTER
SPLIT WALL-MOUNTED TYPE
MSC-09HRDN1-QD0(E)
MSC-12HRDN1-QC6(E)
MSH-09HRDN1-QD0(E)
MSH-12HRDN1-QC6(E)
V1.0
Dec., 2006
CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution ................................................................................................................................................ 1
1.2 Warning ............................................................................................................................................................... 1
2. Function ........................................................................................................................................................ 3
3. Dimension .................................................................................................................................................... 5
3.1 Indoor Unit ........................................................................................................................................................... 5
3.2 Outdoor Unit ........................................................................................................................................................ 6
4. Specification ................................................................................................................................................ 7
5. Refrigerant cycle diagram .......................................................................................................................... 9
6. Wiring diagram ........................................................................................................................................... 10
6.1 Indoor Unit ......................................................................................................................................................... 10
6.2 Outdoor Unit ...................................................................................................................................................... 11
7. Installation details ...................................................................................................................................... 12
7.1 Wrench torque sheet for installation .................................................................................................................. 12
7.2 Connecting the cables ....................................................................................................................................... 12
7.3 Pipe length and the elevation ............................................................................................................................ 12
7.4 Air purging of the piping and indoor unit ............................................................................................................ 13
7.5 Pumping down (Re-installation) ......................................................................................................................... 14
7.6 Re-air purging (Re-installation) .......................................................................................................................... 15
7.7 Balance refrigerant of the 2-way, 3-way valves ................................................................................................. 16
7.8 Evacuation ......................................................................................................................................................... 17
7.9 Gas charging ..................................................................................................................................................... 18
8. Operation characteristics ......................................................................................................................... 19
8.1 MSC-09HRDN1-QD0(E) .................................................................................................................................... 19
8.2 MSC-12HRDN1-QC6(E) .................................................................................................................................... 20
8.3 MSH-09HRDN1-QD0(E) .................................................................................................................................... 21
8.4 MSH-12HRDN1-QC6(E) .................................................................................................................................... 22
9. Electronic function .................................................................................................................................... 23
9.1 Abbreviation ...................................................................................................................................................... 23
9.2 Display function ................................................................................................................................................. 23
9.3 Protection .......................................................................................................................................................... 24
9.4 Fan-Only Mode .................................................................................................................................................. 24
9.5 Cooling Mode .................................................................................................................................................... 25
9.6 Drying mode ...................................................................................................................................................... 27
9.7 Heating mode .................................................................................................................................................... 27
9.8 Auto mode function ............................................................................................................................................ 31
9.9 Forced operation function .................................................................................................................................. 31
9.10 Action of 4-way valve ....................................................................................................................................... 32
9.11 Two speeds outdoor fan function ..................................................................................................................... 32
9.12 Timer function .................................................................................................................................................. 32
9.13 Sleep function mode ........................................................................................................................................ 32
9.14 Electronic control parameter ............................................................................................................................ 33
10. Troubleshooting ....................................................................................................................................... 35
10.1 Indoor Unit Error Display ................................................................................................................................. 35
10.2 Diagnosis and Solution .................................................................................................................................... 35
11. Characteristic of temp. sensor ............................................................................................................... 39
1
1. Precaution
1.1 Safety 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 Warning
¾ Installation
Do not use a defective or underrated circuit
breaker. Use this appliance on a dedicated circuit.
There is risk of fire or electric shock.
For electrical work, contact the dealer, seller, a
qualified electrician, or an Authorized service
center.
Do not disassemble or repair the product, there is risk
of fire or electric shock.
Always ground the product.
There is risk of fire or electric shock.
Install the panel and the cover of control box
securely.
There is risk of fire of electric shock.
Always install a dedicated circuit and breaker.
Improper wiring or installation may cause fore or
electric shock.
Use the correctly rated breaker of fuse.
There is risk of fire or electric shock.
Do not modify or extend the power cable.
There is risk of fire or electric shock.
Do not install, remove, or reinstall the unit by
yourself (customer).
There is risk of fire, electric shock, explosion, or
injury.
Be caution when unpacking and installing the
product.
Sharp edges could cause injury, be especially careful
of the case edges and the fins on the condenser and
evaporator.
For installation, always contact the dealer or an
Authorized service center.
There is risk of fire, electric shock, explosion, or
injury.
Do not install the product on a defective
installation stand.
It may cause injury, accident, or damage to the
product.
Be sure the installation area does not deteriorate
with age.
If the base collapses, the air conditioner could fall
with it, causing property damage, product failure, and
personal injury.
Do not let the air conditioner run for a long time
when the humidity is very high and a door or a
windows is left open.
Moisture may condense and wet or damage furniture.
Take care to ensure that power cable could not be
pulled out or damaged during operation.
There is risk of fire or electric shock.
Do not place anything on the power cable.
There is risk of fire or electric shock.
Do not plug or unplug the power supply plug
during operation.
There is risk of fire or electric shock.
Do not touch (operation) the product with wet
hands.
There is risk of fire or electric shock.
Do not place a heater or other appliance near the
power cable.
There is risk of fire and electric shock.
Do not allow water to run into electric parts.
It may cause fire, failure of the product, or electric
shock.
Do not store or use flammable gas or combustible
near the product.
There is risk of fire or failure of product.
Do not use the product in a tightly closed space
for a long time.
Oxygen deficiency could occur.
When flammable gas leaks, turn off the gas and
open a window for ventilation before turn the
product on.
Do not use the telephone or turn switches on or off.
There is risk of explosion or fire.
If strange sounds, or small or smoke comes from
product. Turn the breaker off or disconnect the
power supply cable.
There is risk of electric shock or fire.
Stop operation and close the window in storm or
hurricane. If possible, remove the product from
the window before the hurricane arrives.
There is risk of property damage, failure of product,
or electric shock.
Do not open the inlet grill of the product during
2
operation. (Do not touch the electrostatic filter, if
the unit is so equipped.)
There is risk of physical injury, electric shock, or
product failure.
When the product is soaked (flooded or
submerged), contact an Authorized service
center.
There is risk of fire or electric shock.
Be caution that water could not enter the product.
There is risk of fire, electric shock, or product
damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
There is risk of fire or electric shock.
Turn the main power off when cleaning or
maintaining the product.
There is risk of electric shock.
When the product is not be used for a long time,
disconnect the power supply plug or turn off the
breaker.
There is risk of product damage or failure, or
unintended operation.
Take care to ensure that nobody could step on or
fall onto the outdoor unit.
This could result in personal injury and product
damage.
¾ CAUTION
Always check for gas (refrigerant) leakage after
installation or repair of product.
Low refrigerant levels may cause failure of product.
Install the drain hose to ensure that water is
drained away properly.
A bad connection may cause water leakage.
Keep level even when installing the product.
To avoid vibration of water leakage.
Do not install the product where the noise or hot
air from the outdoor unit could damage the
neighborhoods.
It may cause a problem for your neighbors.
Use two or more people to lift and transport the
product.
Avoid personal injury.
Do not install the product where it will be exposed
to sea wind (salt spray) directly.
It may cause corrosion on the product. Corrosion,
particularly on the condenser and evaporator fins,
could cause product malfunction or inefficient
operation.
¾ Operational
Do not expose the skin directly to cool air for long
periods of time. (Do not sit in the draft).
This could harm to your health.
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.
There is risk of damage or loss of property.
Do not block the inlet or outlet of air flow.
It may cause product failure.
Use a soft cloth to clean. Do not use harsh
detergents, solvents, etc.
There is risk of fire, electric shock, or damage to the
plastic parts of the product.
Do not touch the metal parts of the product when
removing the air filter. They are very sharp.
There is risk of personal injury.
Do not step on pr put anything on the product.
(outdoor units)
There is risk of personal injury and failure of product.
Always insert the filter securely. Clean the filter
every two weeks or more often if necessary.
A dirty filter reduces the efficiency of the air
conditioner and could cause product malfunction or
damage.
Do not insert hands or other object through air
inlet or outlet while the product is operated.
There are sharp and moving parts that could cause
personal injury.
Do not drink the water drained from the product.
It is not sanitary could cause serious health issues.
Use a firm stool or ladder when cleaning or
maintaining the product.
Be careful and avoid personal injury.
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.
There is risk of fire or explosion.
Do not recharge or disassemble the batteries. Do
not dispose of batteries in a fire.
They may burn of explode.
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.
The chemical in batteries could cause burns or other
health hazards
3
2. Function
When the power supply is
interrupted and then restore, the air
conditioners automatically restore
the previous function setting.
Tele Remote control (Optional)
Maintain the room temperature in accordance
w
ith the setting temperature.
The mode can be change by the room temperature.
The louver can be set at the desired position or
swing up and down automatically
The function is usually used in rainy days in
springtime or damp areas.
The fan is turn to low speed (cooling/heating).
The unit will be turn off at the seventh hour.
The unit will decide the louver direction according to
operation mode.
Turbo wind, high, med, low, breeze.
Restarting is for approx. 3 minutes..
Prevent the water being freezed on evaporator by sensing
the evaporator pipe temperature in cooling mode
Room temperature sensor.
Pipe temperature sensor.
Indoor unit
Operation by remote controller
Sensing by room temperature
Room temperature control
Anti-freezing control in cooling
Time Delay Safety control
Indoor fan speed control
Two-direction air vane
Sleep mode auto control
Independent dehumidification
Air flow Direction control
Auto mode
Temp. Compensation
Flexible wiring connection
Auto defrost
Plasma (Optional)
Anti-cold function
Self-diag. function
Auto-restart function
Work voltage (160V-253V)
Ionizer (Optional)
Prevent the cold wind at the
beginning of unit start.
4
It protects the valves and prevents water from dripping.
The unit has 3 mins delay between continuously ON/OFF operations.
Outdoor unit
Power relay control
The hydrophilic fin can improve the heating efficiency at operation mode.
Hydrophilic aluminum fin
It is only operated in the heating operation mode except defrosting operation.
Anti-rust cabinet
Valve protection cover
4 way valve control
Made from electrolytic zinc steel sheet and anti-rust coated components.
Low noise air flow system
Bird tail propeller fan makes the outdoor unit run more quietly.
Discharge pipe temperature protect
Heating cable (Optional)
Driving heating at -15℃
5
3. Dimension
3.1 Indoor Unit
MSC-09HRDN1-QD0(E) MSC-12HRDN1-QC6(E)
MSH-09HRDN1-QD0(E) MSH-12HRDN1-QC6(E)
6
3.2 Outdoor Unit
MOC-09HDN1-QD0(E) MOC-12HDN1-QC6(E)
7
4. Specification
Indoor MSC-09HRDN1-QD0(E
)
MSC-12HRDN1-QC6(E
)
Outdoor MOC-09HDN1-QD0(E) MOC-12HDN1-QC6(E)
Power supply Ph-V-Hz 1,220-240V~,50Hz 1, 220-240V~, 50Hz
Cooling
Capacity Btu/h 9000(3100~11200) 12000(3800~14700)
Input W 660(300~1100) 970(400~1480)
Rated current A 2.9(1.3~4.8) 4.3(1.8~6.5)
EER Btu/w.h, 13.6,4.0 12.4, 3.62
Heating
Capacity Btu/h 10000(3300~12300) 13000(4000~15200)
Input W 690(310~1150) 950(390~1460)
Rated current A 3.0(1.4~5.0) 4.2(1.7~6.4)
COP W/W 4.2 4
Moisture Removal L/h 0.8 1.2
Max. input consumption W 1500 1600
Max. current A 8 8.5
Starting current A 3.2 4.5
PTC Heater(optional) W 85 85
Compressor
Model DA108X1C-20FZ3 DA108X1C-20FZ3
Type Rotary Rotary
Brand TOSHIBA TOSHIBA
Capacity Btu/h 10918 10918
Input W 855 855
Rated current(RLA) A 5.3 5.3
Locked rotor Amp(LRA) A 8 8
Thermal protector CS-74 CS-74
Capacito
r
uF No No
Refrigerant oil ml 480 480
Indoor fan
motor
Model RPG20D RPG20D
Brand Welling Welling
Input W 38 38
Capacito
r
uF 1.5 1.5
Speed(hi/mi/lo) r/min 1150/1000/800 1250/1060/800
Indoor air flow (Hi/Mi/Lo) m3/h 590/470/325 615/485/325
Indoor noise level (Hi/Mi/Lo) dB(A) 41/35/30 43/37/30
Indoor unit
Dimension (W*H*D) mm 790*265*193 790*265*193
Packing (W*H*D) mm 875*375*285 875*375*285
Net/Gross weight Kg 8.5/10.5 9.0/11.0
Outdoor fan
motor
Model YDK24-6G YDK24-6G
Brand Welling Welling
Input W 59 59
Capacito
r
uF 2.5 2.5
Speed r/min 800/550 800/550
Outdoor air flow m3/h 1650/1060 1650/1060
Outdoor noise level dB(A) 52 54
Outdoor unit
Dimension(W*H*D) mm 760*590*285 760*590*285
Packing (W*H*D) mm 887*655*355 887*655*355
Net/Gross weight Kg 40.5/43 40.5/43
Refrigerant type R410A g 1230 1230
Refrigerant
piping
Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53 Ф6.35/Ф12.7
Max. refrigerant pipe m 15 15
Max. difference in level m 8 8
Operation temp
℃
17 ~ 30 17 ~ 30
Ambient temp
℃
-15 ~ 50 -15 ~ 50
8
Indoor MSH-09HRDN1-QD0(E
)
MSH-12HRDN1-QC6(E
)
Outdoor MOC-09HDN1-QD0(E) MOC-12HDN1-QC6(E)
Power supply Ph-V-Hz 1,220-240V~,50Hz 1, 220-240V~, 50Hz
Cooling
Capacity Btu/h 9000(3100~11200) 12000(3800~14700)
Input W 660(300~1100) 970(400~1480)
Rated current A 2.9(1.3~4.8) 4.3(1.8~6.5)
EER Btu/w.h, 13.6,4.0 12.4, 3.62
Heating
Capacity Btu/h 10000(3300~12300) 13000(4000~15200)
Input W 690(310~1150) 950(390~1460)
Rated current A 3.0(1.4~5.0) 4.2(1.7~6.4)
COP W/W 4.2 4
Moisture Removal L/h 0.8 1.2
Max. input consumption W 1500 1600
Max. current A 8 8.5
Starting current A 3.2 4.5
PTC Heater(optional) W 85 85
Compressor
Model DA108X1C-20FZ3 DA108X1C-20FZ3
Type Rotary Rotary
Brand TOSHIBA TOSHIBA
Capacity Btu/h 10918 10918
Input W 855 855
Rated current(RLA) A 5.3 5.3
Locked rotor Amp(LRA) A 8 8
Thermal protector CS-74 CS-74
Capacito
r
uF No No
Refrigerant oil ml 480 480
Indoor fan
motor
Model RPG20D RPG20D
Brand Welling Welling
Input W 38 38
Capacito
r
uF 1.5 1.5
Speed(hi/mi/lo) r/min 1150/1000/800 1250/1060/800
Indoor air flow (Hi/Mi/Lo) m3/h 650/515/375 675/520/375
Indoor noise level (Hi/Mi/Lo) dB(A) 41/35/30 43/37/30
Indoor unit
Dimension (W*H*D) mm 810*282*215 810*282*215
Packing (W*H*D) mm 915*360*290 915*360*290
Net/Gross weight Kg 9.5/11.5 9.5/11.5
Outdoor fan
motor
Model YDK24-6G YDK24-6G
Brand Welling Welling
Input W 59 59
Capacito
r
uF 2.5 2.5
Speed r/min 800/550 800/550
Outdoor air flow m3/h 1650/1060 1650/1060
Outdoor noise level dB(A) 52 54
Outdoor unit
Dimension(W*H*D) mm 760*590*285 760*590*285
Packing (W*H*D) mm 887*655*355 887*655*355
Net/Gross weight Kg 40.5/43 40.5/43
Refrigerant type R410A g 1230 1230
Refrigerant
piping
Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53 Ф6.35/Ф12.7
Max. refrigerant pipe m 15 15
Max. difference in level m 8 8
Operation temp
℃
17 ~ 30 17 ~ 30
Ambient temp
℃
-15 ~ 50 -15 ~ 50
The above design and specifications are subject to change without prior notice for product improvement.
9
5. Refrigerant cycle diagram
10
6. Wiring diagram
6.1 Indoor Unit
MSC-09HRDN1-QD0(E) MSC-12HRDN1-QC6(E)
MSH-09HRDN1-QD0(E) MSH-12HRDN1-QC6(E)
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