Midea MSQ-07CR, MSQ-07HR, MSQ-09CR, MSQ-09HR, MSQ-12CR Service Manual
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MSQ-07CR; MSQ-07HR
MSQ-09CR; MSQ-09HR
MSQ-12CR; MSQ-12HR
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Content
1.
Precaution ...................................................................................................................... Ошибка! Закладка не определена.
1.1. Safety Precaution ......................................................................................................... Ошибка! Закладка не определена.
1.2. Warning ........................................................................................................................ Ошибка! Закладка не определена.
2. Function ................................................................................................................................................................................ 3
3. Dimension ............................................................................................................................................................................. 5
3.1 Indoor unit .............................................................................................................................................................................. 5
3.2 Outdoor unit ............................................................................................................................................................................ 6
4. Specification ......................................................................................................................................................................... 8
5. Refrigerant cycle diagram .................................................................................................................................................. 10
6. Operation limits .................................................................................................................................................................. 11
6.1 Cooling operation ................................................................................................................................................................. 11
6.2 Heating operation ................................................................................................................................................................. 11
7. Schematic diagram and Wiring diagram ........................................................................................................................... 12
7.1. Schematic diagram ............................................................................................................................................................... 12
7.2. Wiring diagram ..................................................................................................................................................................... 13
8. Installation details .............................................................................................................................................................. 16
8.1 Wrench torque sheet for installation ...................................................................................................................................... 16
8.2 Connecting the cables .......................................................................................................................................................... 16
8.3 Pipe length and the elevation ................................................................................................................................................ 16
8.4 Air purging of the piping and indoor unit ................................................................................................................................ 17
8.5 Pumping down (Re-installation) ............................................................................................................................................ 18
8.6 Re-air purging (Re-installation) ............................................................................................................................................. 19
8.7 Balance refrigerant of the 2-way, 3-way valves ..................................................................................................................... 20
8.8 Evacuation............................................................................................................................................................................ 21
8.9 Gas charging ........................................................................................................................................................................ 22
9. Pressure table ..................................................................................................................................................................... 23
9.1 MSQ3-07CR ......................................................................................................................................................................... 23
9.2 MSQ3-07HR ......................................................................................................................................................................... 23
9.3 MSQ3-09CR ......................................................................................................................................................................... 24
9.4 MSQ3-09HR ......................................................................................................................................................................... 24
9.5 MSQ3-12CR ......................................................................................................................................................................... 25
9.6 MSQ3-12HR ......................................................................................................................................................................... 25
10. Capacity table ..................................................................................................................................................................... 26
10.1 MSQ3-07CR ......................................................................................................................................................................... 26
10.2 MSQ3-07HR ......................................................................................................................................................................... 26
10.3 MSQ3-09CR ......................................................................................................................................................................... 27
10.4 MSQ3-09HR ......................................................................................................................................................................... 28
10.5 MSQ3-12CR ......................................................................................................................................................................... 29
10.6 MSQ3-12HR ......................................................................................................................................................................... 29
11. E l ectr o nic fun ction ............................................................................................................................................................. 31
11.1 Proper symbols and their meaning ....................................................................................................................................... 31
11.2 Function ............................................................................................................................................................................... 31
3
11.3 Protection ............................................................................................................................................................................. 31
11.4 Fan-only mode ..................................................................................................................................................................... 32
11.5 Cooling mode ....................................................................................................................................................................... 32
11.6 Dehumidifying mode ............................................................................................................................................................. 33
11.7 Heating mode ....................................................................................................................................................................... 34
11.8 Defrosting mode(available for heating mode) ........................................................................................................................ 35
11.9 Auto mode ............................................................................................................................................................................ 36
11.10 Force cooling function ........................................................................................................................................................... 36
11.11 Sleep mode .......................................................................................................................................................................... 37
11.12 Auto restart function.............................................................................................................................................................. 37
12. Model and Parameters ....................................................................................................................................................... 38
13. Troubleshooting ................................................................................................................................................................. 39
13.1. For all cooling only model ..................................................................................................................................................... 39
13.2. For all heat pump model ....................................................................................................................................................... 39
13.3. Diagnostic chart .................................................................................................................................................................... 40
13.4. Resetting phenomenon often occurs during operation. ......................................................................................................... 41
13.5. Operation lamp flashes and Timer lamp off. .......................................................................................................................... 41
13.6. Operation lamp flashes and Timer lamp on. .......................................................................................................................... 41
13.7. Operation lamp off and Timer lamp flashes ........................................................................................................................... 42
13.8. Operation lamp on and Timer lamp flashes ........................................................................................................................... 42
13.9. Operation lamp flashes, Timer lamp flashes . ....................................................................................................................... 42
14. Characteristic of temperature sensor ............................................................................................................................... 43
Service manual
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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
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, s el l er, 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 electr ic
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 deteriorat e with age.
If the base collapse s, t he air conditioner coul d 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 shoc k.
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 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 s hoc k.
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
Service manual
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power supply plug or turn off the breaker.
There is risk of product d ama g e or fa ilure, or unintended
operation.
Take care to ensure that nobody could step on or fall onto the
outdoor unit.
This could result in personal in jury and pr od uct d ama ge.
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 cau se w ater 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.
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.
Service manual
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2. Function
The function will be operate in any operation mode.
Indoor unit
Operation ON/OFF by remote controller
Maintain the room temperature in accordance with the setting temperature.
Room temperature
Indoor fan is delayed for 5 sec at the starting.
Starting temperature control
Restarting is for approx. 3 minutes..
Time Delay Safety control
Turbo wind, high, med, low, breeze.
Indoor fan speed control
Light up in the LED (LCD) for each operation mode.
The fan is turn to low speed (cooling/heating).
The unit will be turn off after seven hours.
Sleep mode auto control
The function is usually used in rainy days in
springtime or damp areas.
Independent dehumidification
Operation indication Lamps (LED)
The louver can be set at the desired position or swing up and
down automatically
Air flow Direction
The unit can be change by the room temperature.
Auto mode
Easy clean panel
Flexible wiring connection
Defrost mode
Temp. Compensation
Auto-restart function
Self-diag. function
Service manual
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The unit has 3 mins delay between continuously ON/OFF operations.
Outdoor unit
Power relay control
Bird tail propeller fan makes the outdoor unit run more quietly.
Low noise air flow system
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.
Discharge pipe temperature protect
Anti-rust cabinet
Valve protection cover
4 way valve control
Service manual
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3. Dimension
3.1 Indoor unit
MSQ-07/09/12C(H)R
Service manual
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3.2 Outdoor unit
MSQ-07/09C(H)R
Service manual
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MSQ-12C(H)R
Service manual
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4. Specification
Model
MSQ3-07CR-QB8H
MSQ3-07HR-QB8H
MSQ3-09CR-QB8H
Power supply
Ph-V-Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
1, 220-240V~,50Hz
Cooling
Capacity
Btu/h
7000
7000
9000
Input
W
820
820
1000
Rated current
A
3.6
3.6
4.1
EER
W/W
9.55
9.55
9.55
Heating
Capacity
Btu/h 8000 Input
W 720 Rated current
A 3.2 COP
W/W 10.2 Max. input consumption
W
1000
1000
1300
Max. current
A 5 5
6.3
Starting current
A
14
14
19.8
Compressor
Model
2P14C225ANA
2P14C235ANA
PH180X1C-4DZDE3
Type
ROTARY
Rotary
Rotary
Brand
Matsushita
GD Matsushita
GD TOSHIBA
Capacity
Btu/h
7455
7455
10287
Input
W
725
725
965
Rated current(RLA)
A
3.4
3.4
4.5
Locked rotor Amp(LRA)
A
14
14
19.8
Thermal protector
B150-145-241E
B150-145-241E
B160-135-141E
Capacitor
uF
25
25
30
Refrigerant oil
ml
270
270
400
Indoor fan
motor
Model
RPG20D
RPG20D
RPG20D
Brand
Welling
Welling
Welling
Input
W
32
32
32
Capacitor
uF
1.2
1.2
1.2
Speed(hi/mi/lo)
r/min
1040/900/800
1040/900/800
1040/900/800
Indoor air flow (Hi/Mi/Lo)
m3/h
490
520/470/420
520
Indoor noise level (Hi/Mi/Lo)
dB(A)
34/31/25
35/31/26
35/31/26
Outdoor fan
motor
Model
YDK24-6T
YDK24-6T
YDK24-6T
Brand
Welling
WELLING
WELLING
Input
W
62
62
62
Capacitor
uF
2.5
2.5
2.5μF/450V
Speed
r/min
815
815
815
Outdoor air flow
m3/h
1400
1400
1500
Outdoor noise level
dB(A)
49
52
50
Refrigerant type R22
g
580
620
650
Design pressure
MPa
2.6
2.6
2.6
Refrigerant
piping
Liquid side/ Gas side
mm(inch)
Ф
6.35/Ф9.53
Ф
6.35/Ф9.53
Ф
6.35/Ф9.53
Max. refrigerant pipe length
m
10
10
10
Max. difference in level
m 5 5
5
Plug type
CS-006/15A 250V
16A
CS-006/15A 250V
Thermostat type
Electronic control
Electronic control
Electronic control
Operation temp
℃
17-30
17-30
17-30
Ambient temp
℃
18-45
-7 - 45
18-45
Application area
m2
12-16
12-16
14-21
Note:
Th e noise date is base on hemi-anechoic chamber, during actual operation; these values are normal ly somewhat different as a result of
ambient condition.
The above design and specifications are subject to change without prior notice for product improvement.
Service manual
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Model
MSQ3-09HR-QB6
MSQ3-12CR-QB8
MSQ3-12HR-QB6
Power supply
Ph-V-Hz
220V~,50Hz
220V~,50Hz
220V~,50Hz
Cooling
Capacity
Btu/h
9000
12000
12000
Input
W
1000
1350
1350
Rated current
A
4.5
6.0
6.0
EER
W/W
9.55
9.55
9.55
Heating
Capacity
Btu/h
10000
_
13500
Input
W
980 _ 1230
Rated current
A
4.4 _ 5.6
COP
W/W
10.2 _ 10.2
Max. input consumption
W
1300
1700
1700
Max. current
A 6 8.0
8.0
Starting current
A
19.8
26
30
Compressor
Model
2P18S225ANK
PH200X2C-8FTC
PH225X2C-4FT
Type
Rotary
Rotary
Rotary
Brand
GD Matsushita
TOSHIBA
GD Matsushita
Capacity
Btu/h
9911
11839
13204
Input
W
970
1135
1250
Rated current(RLA)
A
4.5
5.2
5.7
Locked rotor Amp(LRA)
A
19.8
26
30
Thermal protector
External
UP3QE0591-T51
External
Capacitor
uF
30
25μF/370V
35
Refrigerant oil
ml
SUNISO 350
440
480
Indoor fan
motor
Model
RPG13H
RPG13H
RPG13H
Brand
WELLING
WELLING
WELLING
Input
W
33
33
33
Capacitor
uF
1.2μF/450V
1.2μF/450V
1.2μF/450V
Speed(hi/mi/lo)
r/min
1060/940/880
1130
1130/1080/1030
Indoor air flow (Hi/Mi/Lo)
m3/h
520/470/420
550
550/500/450
Indoor noise level (Hi/Mi/Lo)
dB(A)
35/31/26
37/33/27
37/33/27
Outdoor fan
motor
Model
YDK24-6T
YDK24-6
YDK24-6
Brand
WELLING
WELLING
WELLING
Input
W
62
72
72
Capacitor
uF
2.5μF/450V
2.5μF/450V
2.5μF/450V
Speed
r/min
800
850
850
Outdoor air flow
m3/h
1500
1800
1800
Outdoor noise level
dB(A)
53
52
52
Refrigerant type R22
g
870
730
860
Design pressure
MPa
2.6
2.6
2.6
Refrigerant
piping
Liquid side/ Gas side
mm(inch
Ф
6.35/Ф9.53
Ф
6.35/Ф12.7
Ф
6.35/Ф12.7
Max. refrigerant pipe
m
10
10
10
Max. difference in level
m 5 3X1.5mm2
No
Plug type
16A
CS-006/15A
16A
Thermostat type
Electronic control
Electronic control
Electronic control
Operation temp
℃
17-30
17-30
17-30
Ambient temp
℃
-7 - 45
18-45
-7 - 45
Application area
m2
14-21
18-26
18-26
Note:
Th e noise date is base on hemi-anechoic chamber, during actual operation; these values are normally somewhat different as a result of
ambient condition.
The above design and specifications are subject to change without prior notice for product improvement.
Service manual
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5. Refrigerant cycle diagram
Cooling only
Heat pump mode
Service manual
11
6. Operation limits
6.1 Cooling operation
Outdoor unit air temp.℃ DB
Indoor air temp. ℃ DB
Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial
pull-down stage.
6.2 Heating operation
Indoor air temp. ℃ DB
Outdoor unit air temp.℃ DB
Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial
pull-down stage.
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