MDV MFS2i-24ARN1 User manual

SERVICE MANUAL
MIDEA AIRCONDITIONER
FLOOR STANDING TYPE
Model:
MFS2i-24ARN1
MFS2i-48ARN1

CONTENTS
1. Safety Precautions.............................................................................................................. 1
1.1 Precaution.............................................................................................................................. 1
1.2 Installation.............................................................................................................................. 1
1.3 Caution .................................................................................................................................. 1
1.4 Operational............................................................................................................................ 2
2. Dimension ............................................................................................................................ 3
2.1 Indoor Unit.................................................................................................................................. 3
2.2 Outdoor Unit............................................................................................................................... 4
3．Refrigerant cycle diagram.................................................................................................. 5
3.1Heat pump mode......................................................................................................................... 5
4 . Wiring diagram ........................................................................................................................ 6
4.1 MFS2i-24ARN1.......................................................................................................................... 6
4.2 MFS2i-48ARN1........................................................................................................................ 7
5．Installation details................................................................................................................... 8
5.1 Installation place......................................................................................................................... 8
5.2 Installing ..................................................................................................................................... 9
5.3 Refrigerant pipe connection..................................................................................................... 12
5.4 Drain Pipe of The Indoor Unit................................................................................................... 23
5.5 Wiring ....................................................................................................................................... 24
5.6 TEST RUN................................................................................................................................ 24
6．External view and display.................................................................................................... 25
6.1 External view............................................................................................................................ 25
6.2 CONTROL PANEL ................................................................................................................... 26
7.Operation characteristics....................................................................................................... 26
8.Electronic function.................................................................................................................. 27
8.1 Main data Introduction......................................................................................................... 27
8.2 Operation Modes and Functions......................................................................................... 27

8.3 Other Functions................................................................................................................... 30
9.Characteristic of temperature sensor................................................................................... 31
10.Trouble shooting ................................................................................................................... 31
10.1 Protective Function.............................................................................................................. 31
10.2 Self-diagnosis...................................................................................................................... 33
10.3 LEDs for the indication of outdoor trouble........................................................................... 33
10.4 Troubles and Solutions........................................................................................................ 34

1
1. Safety Precautions
1.1 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 Installation
For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized service
center.
Do not disassemble or repair the product by yourself.
Sharp edges could cause injury, be especially careful of the case edges and the fins on the
condenser and evaporator.
Be sure the installation area does not deteriorate with age.
Take care to ensure that power cable could not be pulled out or damaged during operation.
Do not place anything on the power cable.
Do not plug or unplug the power supply plug during operation.
Do not store or use flammable gas or combustible near the product.
When flammable gas leaks, turn off the gas and open a window for ventilation before turn the
product on.
If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the
power supply cable as soon as possible.
When the product is soaked (flooded or submerged), contact anAuthorized service center.
Be caution that water could not enter the product.
Turn the main power off when cleaning or maintaining the product.
When the product is not be used for a long time, disconnect the power supply plug or turn off the
breaker.
1.3 Caution
Always check for gas (refrigerant) leakage after installation or repair of product.
Install the drain hose to ensure that water is drained away properly.
Keep level even when installing the product.
Do not install the product where the noise or hot air from the outdoor unit could damage the
neighborhoods.
Use two or more people to lift and transport the product.
Do not install the product where it will be exposed to sea wind (salt spray) directly.

2
1.4 Operational
Do not expose the skin directly to cool air for long periods of time. (Do not sit in the draft).
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.
Do not block the inlet or outlet of air flow.
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
Do not touch the metal parts of the product when removing the air filter. They are very sharp.
Do not step on pr put anything on the product. (outdoor units)
Always insert the filter securely. Clean the filter every two weeks or more often if necessary.
Do not insert hands or other object through air inlet or outlet while the product is operated.
Do not drink the water drained from the product.
Use a firm stool or ladder when cleaning or maintaining the product.
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.
Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.
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.

3
2. Dimension
2.1 Indoor Unit
Dimension
Mode
W(mm)
D(mm)
H(mm)
MFS2i-24ARN1
500
273
1665
MFS2i-48ARN1
540
379
1775

4
2.2 Outdoor Unit
Dimension
Mode
W(mm)
D(mm)
H(mm)
W1(mm)
A(mm)
B(mm)
MFS2i-24ARN1
845
335
695
918
560
335
Dimension
Mode
W(mm)
D(mm)
H(mm)
W1(mm)
A(mm)
B(mm)
MFS2i-48ARN1
990
355
965
1075
623
366

5
3．Refrigerant cycle diagram
3.1Heat pump mode

6
4 . Wiring diagram
4.1 MFS2i-24ARN1
Indoor Unit
Outdoor Unit

7
4.2 MFS2i-48ARN1
Indoor Unit
Outdoor Unit