Midea MSV1 XX SM Schematic
MSV1-07CR-QB8F MSV1-07HR-QB8F
MSV1-09CR-QB8F MSV1-09HR-QB8F
MSV1-12CR-QB8F MSV1-12HR-QB8F
MSV1-18CR-QB8F MSV1-18HR-QB8F
MSV1-07CR-NC2F MSV1-07HR-NC2F
MSV1-09CR-NC2F MSV1-09HR-NC2F
MSV1-12CR-NC2F MSV1-12HR-NC2F
MSV1-18CR-QB8F MSV1-18HR-QB8F
Content
Content
1 Precaution............................................................................................................................1
1.1 Safety Precaution......................................................................................................................................1
1.2 Warning.....................................................................................................................................................1
2 Function...............................................................................................................................4
3 Dimension............................................................................................................................5
4 Specification........................................................................................................................6
5 Refrigerant cycle diagram................................................................................................10
6 Operation limits.................................................................................................................11
7 Wiring diagram..................................................................................................................12
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 Electronic function............................................................................................................23
9.1 Electronic control working environment..................................................................................................23
9.2 Proper symbols and their meaning.........................................................................................................23
9.3 Function...................................................................................................................................................24
9.4 Protection................................................................................................................................................24
9.5 Fan only mode.........................................................................................................................................25
9.6 Cooling mode..........................................................................................................................................25
9.7 Dehumidifying mode................................................................................................................................26
9.8 Heating mode..........................................................................................................................................26
9.9 Defrosting mode(available for heating mode).........................................................................................27
9.10 Auto mode.............................................................................................................................................28
9.11 Force cooling function...........................................................................................................................28
9.12 Sleep mode...........................................................................................................................................28
9.13 Auto restart function..............................................................................................................................29
9.14 Ionizer (air clean) function.....................................................................................................................29
9.15 Follow me function................................................................................................................................30
9.16 Self-clean function.................................................................................................................................30
9.17 Turbo.....................................................................................................................................................30
10 Model and Parameters......................................................................................................32
11 Troubleshooting.................................................................................................................34
11.1 LCD Display board................................................................................................................................34
11.2 Indoor Unit Error Display.......................................................................................................................35
11.3 Diagnostic chart.....................................................................................................................................36
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Content
11.4 Resetting phenomenon often occurs during operation.........................................................................37
11.5 Indoor Unit Error Display：E3...............................................................................................................37
11.6 Indoor Unit Error Display：E5 or E6.....................................................................................................38
11.7 Indoor Unit Error Display：E4...............................................................................................................38
11.8 Indoor Unit Error Display：E1...............................................................................................................38
11.9 Indoor Unit Error Display：E2...............................................................................................................38
12 haracteristic of temperature sensor................................................................................39
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Service manual
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
Ø 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
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.
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Service manual
§ 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 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.
Ø 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.
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Service manual
§ 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.
Ø 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.
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2 Function
Service manual
Ø Indoor unit
1. Operation ON/OFF by remote controller
2. Sensing by room temperature
Room temperature sensor. Pipe temperature
sensor.
3. Room temperature control
Maintain the room temperature in accordance with
the setting temperature.
4. Starting temperature control
Indoor fan is delayed for 5 sec at the starting.
5. Time Delay Safety control
Restarting is for approx. 3 minutes.
6. Indoor fan speed control
High, med, low.
7. Operation indication LCD
Light up in the LCD for each operation mode.
8. Two-direction air vane
The unit will decide the louver direction according
to operation mode.
9. Sleep mode auto control
The fan is turn to low speed (cooling/heating).
The unit will be turn off after seven hours.
10. Independent dehumidification
The function is usually used in rainy days in
springtime or damp areas
11. Self-diag. function
The function will be operate in any operation mode.
12. Air flow Direction control
The louver can be set at the desired position or
swing up and down automatically
13. Auto mode
The unit can be change by the room temperature.
14. Anti-cold function
Prevent the cold wind at the beginning of unit start.
15. Temp. Compensation
16. Defrost mode
17. Auto-restart function
18. Flexible wiring connection
19. Self-Clean
20. Ionizer
The function is operated by remote controller.
21．Follow me.
The function is operated by remote controller.
22. Self-clean
Function used after the Shut Down of cooling
operation to clean the Evaporator and keep it as fresh
for the next operation. The function is operated by
remote controller..
23．Turbo
This function enables the unit to reach the preset
temperature in the shortest time under cooling mode
Ø Outdoor unit
1. Power relay control
The unit has 3 mins delay between continuously
ON/OFF operations.
2. Low noise air flow system
Bird tail propeller fan makes the outdoor unit run
more quietly
3. Hydrophilic aluminum fin
The hydrophilic fin can improve the heating
efficiency at operation mode.
4. 4 way valve control
It is only operated in the heating operation mode
except defrosting operation.
5. Anti-rust cabinet
Made from electrolytic zinc steel sheet and anti-rust
coated components.
6. Valve protection cover
It protects the valves and prevents water from
dripping.
7. Discharge pipe temperature
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Service manual
18K
995
292
194
549
266
3 Dimension
Indoor unit
Dimension
7K 795 270 165
9K 795 270 165
12K 845 286 165
outdoor unit
W H D
Dimension
Mode
7K 700 535 285 458 250
9K(50Hz) 700 535 285 458 250
9K(60Hz) 780 540 250 549 266
12K 780 540 250
18K 845 695 335 560 360
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W H D L1 L2
4 Specification
m3/h
Ф
Ф
Ф
Ф
Max. difference in level
Service manual
Model
Power supply
Capacity Btu/h 7000 7000 7000 7000
Cooling
Heating
Max. current
Starting current
Compressor
Indoor
fan motor
Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)
Outdoor
fan motor
Outdoor air flow
Outdoor noise level
Refrigerant type R22
Design pressure
Refrigerant
piping
Operation temp
Ambient temp
Application area
Input W 730 730 660 660
Rated current A 3.3 3.3 3 3
EER Btu/w.h 9.55 9.55 10.9 10.9
Capacity Btu/h —— 8000 —— 8000
Input W —— 780 —— 730
Rated current A —— 3.5 —— 3.3
COP W/W —— 10.2 —— 10.9
Model 2P14C225ANA 2P14C225ANA 2R12S3R236A6B 2R12S3R236A6B
Type ROTARY ROTARY ROTARY ROTARY
Brand Matsushita Matsushita Matsushita Matsushita
Capacity Btu/h 7455 7455 7933 7933
Input W 725 725 737 737
Rated current(RLA) A 3.4 3.4 3.3 3.3
Locked rotor Amp(LRA) A 14 14 21 21
Thermal protector External External External External
Capacitor uF 25 25 15 15
Refrigerant oil ml 270 270 550 550
Model
Brand Welling Welling Welling Welling
Input W 32 32 32 32
Capacitor uF 1.2 1.2 1.2 1.2
Speed(hi/mi/lo) r/min 1040/900/800 1040/900/800 1040/900/800 1040/900/800
Model
Brand Welling Welling Welling Welling
Input W 56 56 58 58
Capacitor uF
Speed r/min 800 800 750 750
Liquid side/ Gas side mm
Max. refrigerant pipe length
Ph-V-Hz
m3/h 450 450 450 450
dB(A) 36/33/30 36/33/30 36/33/30 36/33/30
dB(A) 50 50 54 54
MPa 2.6 2.6 2.6 2.6
MSV1-07CR-QB8F MSV1-07HR-QB8F MSV1-07CR-NC2F MSV1-07HR-NC2F
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-230V~, 60Hz 1, 220-230V~, 60Hz
A 5 5 5 5
A 14 14 21 21
RPG20D RPG20D RPG13B RPG13B
YDK24-6T YDK24-6T YDK20-6B YDK20-6B
2.5 2.5 2.5 2.5
1500 1500 1500 1500
g 530 570 730 730
6.35/Ф9.53
m 10 10 10 10
m 5 5 5 5
℃
℃
2
m
17-30 17-30 17-30 17-30
18-45 -7-45 18-45 -7-45
10-14 10-14 10-14 10-14
6.35/Ф9.53
6.35/Ф9.53
6.35/Ф9.53
Note:
The 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.
- 6 -
Service manual
Locked rotor Amp(LRA)
m3/h
Ф
Ф
Ф
Ф
Max. refrigerant pipe length
Max. difference in level
m
Model
Power supply
Capacity Btu/h 9000 9000 9000 9000
Cooling
Heating
Max. current
Starting current
Compressor
Indoor
fan motor
Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)
Outdoor
fan motor
Outdoor air flow
Outdoor noise level
Refrigerant type R22
Design pressure
Refrigerant
piping
Operation temp
Ambient temp
Application area
Input W 940 940 820 820
Rated current A 4.2 4.2 3.7 3.7
EER Btu/w.h
Capacity Btu/h
Input W
Rated current A
COP W/W
Model 2P18S225ANK 2P18S225ANK 2P14S236A1E 2P14S236A1J
Type Rotary
Brand Matsushita Matsushita Matsushita Matsushita
Capacity Btu/h 9912 9912 9161 9195
Input W 970 970 845 850
Rated current(RLA) A 4.5 4.5 3.8 3.8
Thermal protector External External External External
Capacitor uF 30 30 30 30
Refrigerant oil ml 350 350 270 350
Model
Brand Welling Welling Welling Welling
Input W 32 32 32 32
Capacitor uF 1.2 1.2 1.2 1.2
Speed(hi/mi/lo) r/min 1040/900/800 1040/900/800 1040/900/800 1040/900/800
Model
Brand Welling Welling Welling Welling
Input W
Capacitor uF
Speed r/min
Liquid side/ Gas side mm
Ph-V-Hz
m3/h 550 550 550 550
dB(A) 38/35/32 38/35/32 38/35/32 38/35/32
dB(A)
MPa
MSV-09CR-QB8F MSV-09HR-QB8FMSV-09CR-NC2F MSV-09HR-NC2F
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-230V~, 60Hz 1, 220-230V~, 60Hz
9.55 9.55 10.9 10.9
___________
___________
___________
___________
A 6.3 6.3 6 6
A 19.8 19.8 26 26
A 19.8 19.8 26 26
RPG20D RPG20D RPG13B RPG13B
YDK24-6T YDK24-6T YDK25-6B YDK24-6FB
70 70 82.5 72
3 3 2.5 2.5
850 850 950 830
1800 1800 1800 1800
52
g 580 800 900 1000
2.6 2.6 2.6 2.6
6.35/Ф9.53
m 10 10 10 10
m 5 5 5 5
℃
℃
2
17-30 17-30 17-30 17-30
18-45 -7-45 18-45 -7-45
14-21 14-21 14-21 14-21
10000
980
4.4
10.2
Rotary
52
6.35/Ф9.53
___________
___________
___________
___________
Rotary
54
6.35/Ф9.53
10000
910
4.1
10.9
Rotary
54
6.35/Ф9.53
Note:
The 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.
- 7 -
Service manual
Locked rotor Amp(LRA)
m3/h
Max. refrigerant pipe length
Max. difference in level
m
Power supply
Model
Ph-V-Hz
MSV1-12CR-QB8FMSV1-12HR-QB8FMSV1-12CR-NC2FMSV1-12HR-NC2F
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-230V~, 60Hz 1, 220-230V~, 60Hz
Capacity Btu/h 12000 12000 12000 12000
Cooling
Input W 1260 1260 1100 1100
Rated current A 5.6 5.6 4.9 4.9
EER Btu/w.h 9.55 9.55 10.9 10.9
Capacity Btu/h ___________ 13000 ___________ 13000
Heating
Input W ___________ 1270 ___________ 1190
Rated current A ___________ 5.7 ___________ 5.3
COP W/W ___________ 10.2 ___________ 10.9
Max. current
Starting current
A 1.4 1.4 1.4 1.4
A 1700 1700 1500 1500
Model PH225X2C-4FT PH225X2C-4FT 2P19S236A1J 2P19S236A1J
Type Rotary Rotary Rotary Rotary
Brand GMCC GMCC Matsushita Matsushita
Capacity Btu/h 13197/13299 13197/13299 12659 12659
Compressor
Input W 1250/1285 1250/1285 1165 1165
Rated current(RLA) A 5.7/5.5 5.7/5.5 5.2 5.2
A 29.9/33 29.9/33 33 33
Thermal protector UP3RE0591-T56 UP3RE0591-T56 External External
Capacitor uF 35 35 30 30
Refrigerant oil ml 480 480 350 350
Model RPG20D RPG20D RPG13B RPG13B
Indoor
fan motor
Brand Welling Welling Welling Welling
Input W 32 32 32 32
Capacitor uF 1.5 1.5 1.2 1.2
Speed(hi/mi/lo) r/min 1260/1080/900 1260/1080/900 1260/1080/900 1260/1080/900
Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)
m3/h 650 650 650 650
dB(A) 42/39/36 42/39/36 42/39/36 42/39/36
Model YDK24-6 YDK24-6 YDK25-6B YDK25-6B
Outdoor
fan motor
Brand Welling Welling Welling Welling
Input W 70 70 82.5 82.5
Capacitor uF 2.5 2.5 2.5 2.5
Speed r/min 850 850 950 950
Outdoor air flow
Outdoor noise level
Refrigerant type R22
Design pressure
Refrigerant
Liquid side/ Gas side mm Ф6.35/φ12.7 Ф6.35/φ12.7 Ф6.35/φ12.7 Ф6.35/φ12.7
piping
dB(A) 54 54 55 55
g 850 900 1020 1050
MPa 2.6 2.6 2.6 2.6
m 10 10 10 10
1800 1800 1800 1800
m 5 5 5 5
Operation temp
Ambient temp
Application area
℃
℃
2
17-30 17-30 17-30 17-30
18-45 -7-45 18-45 -7-45
18-26 18-26 18-26 18-26
Note:
The 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.
- 8 -
Service manual
Locked rotor Amp(LRA)
Max. refrigerant pipe length
Max. difference in level
℃
Model
Power supply
Capacity Btu/h 17000 17000
Cooling
Heating
Max. current
Starting current
Compressor
Indoor
fan motor
Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)
Outdoor
fan motor
Outdoor air flow
Outdoor noise level
Refrigerant type R22
Design pressure
Refrigerant
piping
Operation temp
Ambient temp
Input W 1650 1650
Rated current A 7.5 7.5
EER Btu/w.h 9.55 9.55
Capacity Btu/h ___________ 19000
Input W ___________ 1800
Rated current A ___________ 8.2
COP Btu/w.h ___________ 10.24
Model PH310X2CS-4KU3PH310X2CS-4KU3
Type Rotary Rotary
Brand GD Toshiba GD Toshiba
Capacity Btu/h 18254 18254
Input W 1690 1690
Rated current(RLA) A 7.85 7.85
Thermal protector Internal Internal
Capacitor uF 35UF/370V 35UF/370V
Refrigerant oil ml 750 750
Model
Brand Welling Welling
Input W 55 55
Capacitor uF 1.5 1.5
Speed(hi/mi/lo) r/min
Model
Brand Welling Welling
Input W
Capacitor uF 3 3
Speed r/min 800 800
Liquid side/ Gas side mm Ф6.35/φ12.7 Ф6.35/φ12.7
MSV1-18CR-QB8FMSV1-18HR-QB8F
Ph-V-Hz
m3/h 800/700/600 800/700/600
dB(A) 42 42
m3/h
dB(A)
MPa 2.6 2.6
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz
A 11 11
A 34 34
A 34 34
RPG28D RPG28D
1280/1250/1100/10001280/1250/1100/1000
YDK53-6C YDK53-6C
125 125
1900 1900
54 54
g R22/1870 R22/1870
m 10 10
m 5 5
℃
17-30 17-30
18-45 -7-45
Note:
The 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.
- 9 -
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