How it Works
Midea
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MSV1-12HRN1
Schematic
37 pgs2.12 Mb0

Midea MSV1-07CRN1, MSV1-07HRN1, MSV1-09CRN1, MSV1-09HRN1, MSV1-12CRN1 Schematic

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MSV1-07CRN1 MSV1-07HRN1 MSV1-09CRN1 MSV1-09HRN1 MSV1-12CRN1 MSV1-12HRN1
Content
Content
1 Precaution....................................................................................................................1
2 Dimension .................................................................................................................... 5
3 Specification ................................................................................................................6
4 Operation limits ...........................................................................................................9
5 Wiring diagram...........................................................................................................10
6 Installation details......................................................................................................12
6.3 Pipe length and the elevation ............................................................................................................ 12
6.7 Balance refrigerant of the 2-way, 3-way valves ................................................................................. 17
7 Electronic function....................................................................................................20
7.1 Electronic control working environment............................................................................................. 20
7.4 Protection.......................................................................................................................................... 21
7.6 Cooling mode .................................................................................................................................... 22
7.10 Auto mode ....................................................................................................................................... 25
7.14 Ionizer (air clean) function............................................................................................................... 27
8 Model and Parameters ..............................................................................................28
9 Troubleshooting.........................................................................................................29
9.1 LCD Display board ............................................................................................................................ 29
9.4 Resetting phenomenon often occurs during operation...................................................................... 31
9.9 Operation lamp flashes, Timer lamp flashes . ................................................................................... 32
- 1 -
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
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.
Alwa ys 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.
Alwa ys 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
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.
open.
- 1 -
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
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.
supply cable.
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.
¾ CAUTION
Always check for gas (refrigerant) leakag e 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.
- 2 -
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.
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 -
1.3 Function
Service manual
¾ 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
Turbo, high, med, low, breeze.
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 will be operated by remote
controller
¾ 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
- 4 -
2 Dimension
Indoor unit
Service manual
Dimension Mode
7K 795 270 165 9K 795 270 165
12K 845 286 165
outdoor unit
WHD
Dimension Mode
7K 700 535 285 458 250
9K 780 540 250 549 266
12K 780 540 250 549 266
- 5 -
WHDL1L2
3 Specification
8
0
0
Service manual
Model
Power supply
Capacity Btu/h 7000 7000 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 R410A Design pressure
Refrigerant piping
Operation temp Ambient temp Application area
Input W 640 640 820 820 Rated current A 2.8 2.8 3.6 3.6 EER Btu/w.h 10.9 10.9 3.2 , 10.9 3.2 , 10.9 Capacity Btu/h —— 8000 —— 10300 Input W —— 650 —— 840 Rated current A —— 2.9 —— 3.7 COP W/W —— 12.31 —— 12.28
Model PA82X1C-4DZDE PA82X1C-4DZDE PA108X1C-4FTDE PA108X1C-4FTDE Type ROTARY ROTARY ROTARY ROTARY Brand TOSHIBA TOSHIBA TOSHIBA TOSHIBA Capacity Btu/h 6650 6650 8870 8870 Input W 680 680 915 915 Rated current(RLA) A 3.04/2.85 2.85 4 4 Locked rotor Amp(LRA) A 15 15 21.7 21.7 Thermal protector B135-135-241E/MRA1340 Capacitor uF 25 25 25 25 Refrigerant oil ml Model RPG20D RPG20D RPG20D RPG20D Brand Welling Welling Welling Welling Input W 32 32 38 38 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 YDK24-6T YDK24-6T YDK24-6F YDK24-6F Brand Welling Welling Welling Welling Input W 56 56 56 56 Capacitor uF 2.5 2.5 2.5 2.5 Speed r/min 800 800 800 800
Liquid side/ Gas side mm
Max. refrigerant pipe length
Max. difference in level m 5 5 5 5
MSV1-07CRN1 MSV1-07HRN1 MSV1-09CRN1 MSV1-09HRN1
Ph-V-Hz
m3/h 450 450 550 550
dB(A) 36/33/30 36/33/30 38/35/32 38/35/32
m
dB(A) 54 54 54 54
MPa 4.2 4.2 4.2 4.2
m
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz 1, 220-230V~, 50Hz 1, 220-230V~, 50Hz
A5 5 5 6 A 15 15 21.7 21.7
35-241E/MRA1340835-241E/MRA1343
STER OIL VG74 35STER OIL VG74 35TER OIL VG74 350TER OIL VG74 35
3
/h
g R410A/800 R410A/820 R410A/900 R410A/900
m10 10 10 10
℃ ℃
2
1500 1500 1800 1800
Ф
6.35/Ф9.53
17-30 17-30 17-30 17-30 18-43 -7-43 18-43 -7-43 10-14 10-14 14-21 14-21
Ф
6.35/Ф9.53
Ф
6.35/Ф9.53
35-241E/MRA1343
Ф
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 -
Model
Power supply
Capacity Btu/h 12000 12000
Cooling
Heating
Max. current Starting current
Compressor
Input W 1090 1100 Rated current A 4.8 4.8 EER Btu/w.h 3.23 , 11.0 3.2 , 10.9 Capacity Btu/h —— 13000 Input W —— 1050 Rated current A —— 4.6 COP W/W —— 12.38
Model PA140X2C-4FT PA140X2C-4FT Type ROTARY ROTARY Brand TOSHIBA TOSHIBA Capacity Btu/h 11567/11618 11567/11618 Input W 1145/1185 1145/1185 Rated current(RLA) A 5.3/5.15 5.3/5.15 Locked rotor Amp(LRA) A 26 26 Thermal protector Capacitor uF 35 35
Service manual
MSV1-12CRN1 MSV1-12HRN1
Ph-V-Hz
A8 8 A26 26
UP3RE0596-T56（INTERNAL：IOL） UP3RE0596-T56（INTERNAL：IOL）
1, 220-240V~, 50Hz 1, 220-240V~, 50Hz
Refrigerant oil ml RB68AF/T68/α68TF: 480 RB68AF/T68/α68TF: 480
Model RPG20D RPG20D
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 R410A Design pressure
Refrigerant piping
Operation temp Ambient temp Application area
Brand Welling Welling Input W 38 38 Capacitor uF 1.2 1.2 Speed(hi/mi/lo) r/min 1260/1080/900 1260/1080/900
m3/h 650 650
dB(A) 40/37/34 40/37/34 Model YDK24-6F YDK24-6F Brand Welling Welling Input W 56 56 Capacitor uF 2.5 2.5 Speed r/min 800 800
Liquid side/ Gas side mm Ф6.35/Ф12.7 Ф6.35/Ф12.7
Max. refrigerant pipe length
Max. difference in level m 5 5
3
m
/h
dB(A) 55 55
g R410A/1050 R410A/1050
MPa 4.2 4.2
m10 10
℃ ℃
2
m
1800 1800
17－30 17－30 17－30 -7－43
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.
- 7 -
Refrigerant cycle diagram
¾ Cooling only
Service manual
¾ Heat pump mode
- 8 -
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