Midea MW120WWBA2RC1 User manual

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WI INDOW TYPE AIR CONDITIONER
Operator's manual
Customer Service / Service à la clientèle:
1-866-206-0888
Item No. 888152 SKu No. 21615026 Model NO. MW120WWBA2RC1

Page 2 User Manual
Read This Manual
Inside you’ll nd many helpful hints on how to use and maintain your air conditioner properly. Just
a little preventive care on your part can save you a great deal of time and money over the life of
your air conditioner. You’l d many answers to common problems in the troubleshooting tips -
you should be able to most of them quickly before calling service. These instructions may not
cover every possible condition of use, so common sense and attention to safety is required when
installing, operating and maintaining this product.
• This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
•Contact an authorized service technician for repair or maintenance of this unit.
•Contact the installer for installation of this unit.
•The air conditioner is not intended for use by young children or people who cannot
operate the air conditioning independently without supervision.
• Young children should be supervised to ensure that they do not play with the air conditioner.
• If the power cord needs to be replaced, please contact our consumer service and look
for an authorized technician.
•Electrical installation must be performed in accordance to national regulation standards
ed personnel only.
• The appliance shall be installed in accordance with national wiring regulations.
• Do not operate your air conditioner in a wet room such as a bathroom or laundry room.
• Appliances with electric heaters should be positioned at least 3 feet (1 m) away from
combustible materials.
Owner’s Manual
Safety Precautions .................................................................................................................... 3
Operating Instructions ...........................................................................................................13
Installation Instructions ....................................................................................................... 18
Care and Cleaning ................................................................................................................. 2444
Troubleshooting Tips ............................................................................................................ 25
Remote Control Instructions ............................................................................................. 26
CAUTION
Air Conditioner Limited Warranty .................................................................................. 33

User Manual Page 3
SAFETY PRECAUTIONS
To prevent injury to the user or other people and property damage, the instructions shown here must be
followed. Incorrect operation due to ignoring of instructions may cause harm or damage. The level of risk
is shown by the following indications.
• Plug in power cord plug properly.
re due to excess heat generation.
• Do not modify power cord length or share the outlet with other appliances as it may
re due to overheating.
ective grounding.
Incorrect grounding may cause electric shock.
• Unplug the unit if you notice unusual sounds or smells, or smoke coming from it.
re and electric shock.
• Ventilate room before operating the air conditioner if there is a gas leakage from
another appliance.
• Do not operate or stop the unit by inserting or pulling out the power cord plug.
• Do not operate with wet hands or in very humid enviroments.
It may cause electric shock.
• Do not allow water to come into contact with any electric parts.
It may cause failure or electric shock.
• Do not use power outlet or a power cord if it’s loose or damaged.
re and electric shock.
• Do not use or keep the power cord close to heating appliances.
re and electric shock.
• Do not disassemble or modify unit.
It may cause failure and electric shock.
• Do not damage or use an alternate power cord.
re and electric shock.
If the power cord is damaged, it must be replaced by the manufacturer or an
authorized servicer in order to avoid a hazard.
ow straight into persons to avoid possible health hazard.
• Always install a circuit breaker and a dedicated power circuit.
re and electric shock.
WARNING
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to property.
Safety
Precautions

Page 4 User Manual
• Do not open the unit during operation.
It may cause electric shock.
ammable gas or combustibles, such as gasoline,
benzene, thinner, etc.
re.
lter is to be removed, do not touch the metal parts of the unit.
It may cause injury.
the circuit breaker.
re, electric shock or injury.
WARNING
• Stop operation and close the window during a storm or hurricane.
Operation with windows open may cause water leakage into the room.
• Do not place obstacles around air inlets or inside of air outlet.
It may cause failure or damage the unit.
• Do not use strong detergents that contain wax or thinners as it may damage the
product. Clean with a soft cloth only.
• Use caution when unpacking and installing. Sharp edges could cause injury.
• Do not clean the air conditioner with water.
Water may enter the unit and degrade the insulation which could lead to electric shock.
ow.
This could injure the pet or harm the plant.
• Hold the plug by the head of the power plug when taking it out.
Otherwise, it may cause electric shock and damage.
• Ensure that the installation is properly secured to prevent the product from
potentially falling.
• Do not place heavy objects on the power cord and ensure that the cord is not compressed.
re or electric shock.
• If water enters the unit, turn o˜ the unit and switch o˜ the circuit breaker. Isolate
supply by taking the power-plug out and contact a qualiÿed service technician.
• When used near a stove or other gas burning device, be sure the room is properly
ventilated.
Otherwise an oxygen shortage may occur.
• Do not use for any purpose other than room comfort.
Do not use this air conditioner to preserve precision devices, food, pets, plants, and art
objects. It may cause deterioration.
• Disconnect the product from power if the unit is not to be used for an extended time.
lter once every two weeks.
lters may cause failure.
• Do not drink water drained from the air conditioner.
CAUTION
Safety
Precautions

User Manual Page 5
Power supply cord with 3-prong
grounding plug and current
detection device
Do not, under any
circumstances, cut,
remove or bypass
the grounding prong.
Grounding type wall receptacle
WARNING - For your safety
• Do not store or use gasoline or other
ammable vapors and liquids in the vicinity
of this or any other appliance.
re hazard or electric shock. Do not
use an extension cord or an adaptor plug.
Do not remove any prongs from the power
cord.
WARNING - Prevent Accidents
re, electrical shock,
or injury to persons when using your air
conditioner, follow basic precautions,
including the following:
• If the air conditioner is to be installed in
a window, you should clean both sides of
the glass ÿrst. If the window is a triple-
track type with a screen panel included,
remove the screen completely before
installation.
• Be sure the air conditioner has been securely
and correctly installed according to the
installation instructions in this manual.
Save this manual for possible future use in
removing or installing this unit.
The complete electrical rating of your new room
air conditioner is stated on the rating label.
Refer to the rating when checking the electrical
requirements.
•Be sure the air conditioner is properly
grounded. To minimize shock and ÿre
hazards, proper grounding is important.
The power cord is equipped with a three-
prong grounding plug for protection
against shock hazards.
• Your air conditioner must be used in a
properly grounded wall receptacle. If the
wall receptacle you intend to use is not
adequately grounded or protected by a time
ed
electrician install the proper receptacle.
• Ensure the receptacle is accessible after the
unit installation.
•Do not run air conditioner without outside
protective cover in place. This could result
in mechanical damage within the air
conditioner.
WARNING - Electrical Information
NOTE
The power supply cord with this air
conditioner contains a current detection
re.
Please refer to the section Power Cord
Operation for details.
In the event that the power supply cord is
damaged, it can not be repaired. It must be
replaced with a cord from the manufacturer.
Safety
Precautions

Page 6 User Manual
The power supply cord contains a current device that senses damage to the power cord. Test your
power supply cord as follows:
1. Plug in the air conditioner.
2. The power supply cord will have TWO buttons on the plug head. Press the TEST button. You will
notice a click as the RESET button pops out.
3. Press the RESET button. Again you will notice a click as the button engages.
4. The power supply cord is now supplying electricity to the unit. (On some products this is also
indicated by a light on the plug head.)
Power Cord Operation
NOTES
•Do not use this device to turn the unit on or o˜ .
• Always make sure the RESET button is pushed in for correct operation.
• The power supply must be replaced if it fails to reset when either the TEST button is pushed, or
it can not be reset. Please contact Customer Service.
•If power supply cord is damaged, it can not be repaired. It MUST be replaced with a new cord.
Please contact Customer Service.
Safety
Precautions

User Manual Page 7
IMPORTANT SAFETY INSTRUCTIONS
WARNING: (for using R290/R32 refrigerant only)
-Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
-The appliance shall be stored in a room without continuously operating ignition
(for example:an operating electric heater) close to the appliance. The appliance shall
be stored in a room without continuously operating ignition sources (for example: open
-Do not pierce or burn.
-Be aware that the refrigerants may not contain an odour.
-Compliance with national gas regulations shall be observed.
-Keep ventilation openings clear of obstruction.
-The appliance shall be stored so as to prevent mechanical damage from occurring.
-A warning that the appliance shall be stored in a well-ventilated area where the room
-Any person who is involved with working on or breaking into a refrigerant circuit should
authorises their competence to handle refrigerants safely in accordance with an
-Servicing shall only be performed as recommended by the equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall be
-DO NOT modify the length of the power cord or use an extension cord to power the unit.
DO NOT share a single outlet with other electrical appliances. Improper power supply
-Please follow the instruction carefully to handle, install, clear, service the air
conditioner to avoid any damage or hazard. Flammable Refrigerant R32 is used within
air conditioner. When maintaining or disposing the air conditioner, the refrigerant (R32
or R290) shall be recovered properly, shall not discharge to air directly.
Please follow the instruction carefully to store or maintain the air conditioner to prevent
mechanical damage from occurring.
-Flammable refrigerant -R32 is used in air conditioner. Please follow the instruction
carefully to avoid any hazard
(Required for R32/R290 units only)
IMPORTANT NOTE:Read this manual
carefully before installing or operating
your new air conditioning unit. Make sure
to save this manual for future reference.
Safety
Precautions

Page 8 User Manual
Safety
Precautions
IMPORTANT SAFETY INSTRUCTIONS
Explanation of symbols displayed on the unit(For the unit adopts R32/R290 Refrigerant only):
WARNING
refrigerant is leaked and exposed to an external ignition source, there is a risk
CAUTION
CAUTION
CAUTION
This symbol shows that the operation manual should be read carefully.
This symbol shows that a service personnel should be handling this
equipment with reference to the installation manual.
This symbol shows that information is available such as the operating
manual or installation manual.
!
WARNINGS (for using R290/R32 ! refrigerant only)
See transport regulations
2.Marking of equipment using signs
See local regulations
See national regulations.
4.Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's instructions.
5.Storage of packed (unsold) equipment
Storage package protection should be constructed such that mechanical damage to the
equipment inside the package will not cause a leak of the refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together will be
determined by local regulations.
6.Information on servicing
1)Checks to the area
necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system,
the following precautions shall be complied with prior to conducting work on the system.
2)Work procedure
Work shall be undertaken under a controlled procedure so as to minimise the risk of a
3)General work area
4)Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work,
adequately sealed or intrinsically safe.
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
6)No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any

User Manual Page 9
IMPORTANT SAFETY INSTRUCTIONS
to the surrounding space. Prior to work taking place, the area around the equipment is to be
signs shall be displayed.
7)Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the
system or conducting any hot work. A degree of ventilation shall continue during the period that
the work is carried out. The ventilation should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
8)Checks to the refrigeration equipment
be followed. If in doubt consult the manufacturer's technical department for assistance.
The charge size is in accordance with the room size within which the refrigerant containing
parts are installed;
The ventilation machinery and outlets are operating adequately and are not obstructed;
If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the
presence of refrigerant;
Marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
Refrigeration pipe or components are installed in a position where they are unlikely to be
exposed to any substance which may corrode refrigerant containing components, unless the
components are constructed of materials which are inherently resistant to being corroded or
are suitably protected against being so corroded.
9)Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then no
electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault
cannot be corrected immediately but it is necessary to continue operation, an adequate
temporary solution shall be used. This shall be reported to the owner of the equipment so all
parties are advised.
Initial safety checks shall include:
That capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking;
That there no live electrical components and wiring are exposed while charging, recovering
or purging the system;
That there is continuity of earth bonding.
7.Repairs to sealed components
1)During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc. If it isabsolutely
necessary to have an electrical supply to equipment during servicing, then a permanently
operating form of leak detection shall be located at the most critical point to warn of a
potentially hazardous situation.
2)Particular attention shall be paid to the following to ensure that by working on electrical
Safety
Precautions

Page 10 User Manual
Safety
Precautions
IMPORTANT SAFETY INSTRUCTIONS
This shall include damage to cables, excessive number of connections, terminals not made
of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer serve the
purpose of
equipment. Intrinsically safe components do not have to be isolated prior to working on them.
8.Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that
this will not exceed the permissible voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the
the ignition of refrigerant in the atmosphere from a leak.
9.Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp
Under no circumstances shall potential sources of ignition be used in the searching for or
not be used.
11.Leak detection methods
sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be
calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition
and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of
the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate
most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine
may react with the refrigerant and corrode the copper pipe-work. If a leak is suspected, all
brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut
be purged through the system both before and during the brazing process.
12.Removal and evacuation
When breaking into the refrigerant circuit to make repairs or for any other purpose conventional
procedures shall be used. However, it is important that best practice is followed since
The following procedure shall be adhered to:
Remove refrigerant;
Purge the circuit with inert gas;
Evacuate;
Purge again with inert gas;
Open the circuit by cutting or brazing.