Mitsubishi Heavy Industries WRK20MA1 User manual

WRK20MA1
WRK26MA1
WRK35MA1
WRK53MA1
WRK70MA1
本空調器適用於家用。
本空調器使用新型環保冷媒(R410A),當需要獲得维修檢查以及保養時,請
對經銷商說明此情況。
承蒙選購三菱重工空調器，深表感謝！爲了使空調器長久保持其良好的運
轉性能,在您開始使用空調器之前,務請仔細閱讀本說明書。閱后應將它妥善保
管好,以備必要時查閱。
MITSUBISHI HEAVY INDUSTRIES
三菱重工
窗口式冷氣機
Window Type Air Conditioner

SOCIABLE REMARK
The following contents apply only the countries of Europe.
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection
of such waste separately for special treatment is necessary.
It is prohibited to dispose of this appliance in domestic household waste.
For disposal, there are several possibilities:
A) The municipality has established collection systems, where electronic waste can
be disposed of at least free of charge to the user.
B) When buying a new product, the retailer will take back the old product at least
free of charge.
C) The manufacture will take back the old appliance for disposal at least free of
charge to the user.
D) As old products contain valuable resources, they can be sold to scrap metal
dealers.
Wild disposal of waste in forests and landscapes endangers your health when
hazardous substances leak into the ground-water and find their way into the food
chain.

Inside you will find 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'll find many answers to common
problems in the chart of troubleshooting tips. If you review our chart of Troubleshooting
Tips first, you may not need to call for service at all.
This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play
the appliance. Cleaning and user maintenance shall not be made by children without
supervision. ( be applicable for the European Countries )
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. (be applicable for other countries except the
European Countries )
Children should be supervised to ensure that they do not play with the appliance.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
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.
The appliance with electric heater shall have at l east 1 m eter s pace t o t he c ombustible
materials.
Contact the authorised service technician for repair or maintenance of this unit.
Contact the authorised installer for installation of this unit.
When there are wide differences between USER S MANUAL and Remote controller
Illustration on function description, the description on USER S MANUAL shall prevail.
If the air conditioner is knocked over during use, turn off the unit and unplug it from the
main power supply immediately. Visually inspect the unit to ensure there is no damage.
If you suspect the unit has been damaged, contact a technician or customer service for
assistance.
In a thunderstorm, the power must be cut off to avoid damage to the machine due to
lightning.
To reduce the risk of fire or electric shock, do not use this fan with any solid-state speed
control device.
Do not run cord under carpeting. Do not cover cord with throw rugs, runners, or similar
coverings. Do not route cord under furniture or appliances. Arrange cord away from
traffic area and where it will not be tripped over.
CAUTION
Read This Manual
!

CONTENTS
1. SAFETY PRECAUTIONS..................................................................2
2. UNIT PARTS IDENTIFICATION.........................................................5
3. OPERATING INSTRUCTIONS ..........................................................6
4. INSTALLATION INSTRUCTIONS......................................................11
5. TROUBLESHOOTING ......................................................................15
6. SPECIFICATIONS .............................................................................16
1

To prevent injury to the user or other people and property damage, the following instructions
must be followed. Incorrect operation due to ignoring of instructions may cause harm or damage.
The seriousness is classified by the following indications.
This symbol indicates the possibility of death or serious injury.
Meanings of symbols used in this manual are as shown below.
!
!
WARNING
Always do this.
Never do this.
!
CAUTION
This symbol indicates the possibility of injury or damage to property.
Plug in power plug
properly.
Do not modify power cord
length or share the outlet
with other appliances.
Always ensure effective
earthing.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
Leave the door closed
while the air conditioner
is running.
Ventilate room before operating air
conditioner if there is a gas leakage from
another appliance.
Otherwise, it may cause electric
shock or fire due to excess heat
generation.
It may cause electric shock or
fire due to heat generation.
Incorrect earthing may cause
electric shock.
It may cause fire and electric
shock.
It is not designed to cool the
entire house.
It may cause explosion, fire and, burns.
It may cause electric shock or fire
due to heat generation.
It may cause electric shock.
It may cause failure of machine
or electric shock.
It may cause fire and electric
shock.
It may cause fire and electric
shock.
It may cause electric shock or fire.
If the power cord is damaged, it
must be replaced by the manufac-
turer or an authorised service
centre or a similarly qualified per-
son in order to avoid a hazard.
This could damage your health.
Incorrect installation may cause
fire and electric shock.
It may cause electric shock.
It may cause an explosion or fire.
It may cause failure and electric shock.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
Do not operate with wet
hands or in damp
environment.
Do not allow water to run
into electric parts.
Do not use the socket if it is
loose or damaged.
Do not use the power cord
close to heating appliances.
Do not damage or use an
unspecified power cord.
Do not direct airflow at
room occupants only.
Always install circuit
breaker and a dedicated
power circuit.
Do not open the unit
during operation.
Do not use the power cord near
flammable gas or combustibles, such
as gasoline, benzene, thinner, etc.
Do not disassemble or modify unit.
!
!
!
!
!
!
WARNING
!
!
SAFETY PRECAUTIONS
2

!
CAUTION
When the air filter is to be
removed, do not touch the
metal parts of the unit.
It may cause an injury.
Do not clean unit when
power is on as it may cause
fire and electric shock, it may
cause an injury.
Operation with windows
opened may cause wetting
of indoor and soaking of
household furniture.
When the unit is to be
cleaned, switch off, and turn
off the circuit breaker.
Stop operation and close
the window in storm or
hurricane.
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. It may
cause an electric shock.
This could injure the pet or
plant.
It may cause electric shock
and damage.
Do not put a pet or house
plant where it will be
exposed to direct air flow.
Hold the plug by the head
of the power plug when
taking it out.
Ventilate the room well when
used together with a stove,
etc.
An oxygen shortage may occur.
Do not use this air conditioner to
preserve precision devices, food,
pets, plants, and art objects.
It may cause deterioration of
quality, etc.
It may cause failure of product
or fire.
Do not use for special
purposes.
Turn off the main power
switch when not using the
unit for a long time.
If water enters the unit, turn the unit off at the power
outlet and switch off the circuit breaker. Isolate
supply by taking the power-plug out and contact a
qualified service technician.
!
!
!
!
!
!
!
It may cause failure of
appliance or accident.
Appearance may be
deteriorated due to change
of product color or
scratching of its surface.
Do not place obstacles
around air-inlets or inside
of air-outlet.
Do not use strong deter-
gent such as wax or
thinner but use a soft cloth.
If bracket is damaged, there
is concern of damage due to
falling of unit.
There is danger of fire or
electric shock.
Ensure that the installation bracket of
the outdoor appliance is not damaged
due to prolonged exposure.
Do not place heavy object on the
power cord and ensure that the cord
is not compressed.
Operation without filters may
cause failure.
It contains contaminants and
could make you sick.
Always insert the filters
securely. Clean filter once
every two weeks.
Do not drink water drained
from air conditioner.
!
!
!
3

Preparing for operation
Usage
Cleaning and maintenance
Operating Temperature
1. Contact an installation specialist for installation.
2. Plug in the power plug properly.
3. Do not use a damaged or non-standard power cord.
4. Do not share the same outlet with other appliances.
5. Do not use an extension cord.
6. Do not start/stop operation by plugging/unplugging the power cord.
1. Exposure to direct airflow for an extended period of time could be hazardous to your
health. Do not expose occupants, pets, or plants to direct airflow for extended
periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used together
with stoves or other heating devices.
3. Do not use this air conditioner for non-specified special purposes (e.g. Preserving
precision devices, food, pets, plants, and art objects). Usage in such a manner could
harm such property.
1. Do not touch the metal parts of the unit when removing the filter. Injuries can occur
when handling sharp metal edges.
2. Do not use water to clean inside the air conditioner. Exposure to water can destroy
the insulation, leading to possible electric shock.
3. When cleaning and maintenance the unit, first make sure that the power and circuit breaker
are turned off.
SAFETY PRECAUTIONS(prior to operation)
Note: Performance may be reduced outside of these operating temperatures.
1. Power cord conductors are distinguished according to color as follows (see Fig.a)
2. For your safety and protection, this unit is earthed through the power cord (see Fig.b)
Please contact the manufacturer or its service agent or a similar qualified person if
you want to replace it.
3. Be sure that the unit being correctly grounded. The wall outlet (Air-break switch)should be
provided with reliable earth wire.
4. The unit should be provided with an individual circuit and the circuit breaker/fuse
rating should be the same as that of the power cord and wall outlet.
POWER
CORD
A
E
N
E-Earth wire, yellow/green
N-Neutral wire, blue
A-Active wire, brown
Fig.a
Wall outlet Air-break switch
4
Cooling operation
Outdoor temp:
Indoor temp:
Fig.b

UNIT PARTS IDENTIFICATION
NOTE: The front panel and cabinet may be slightly different according to the models, but the
functions are the same. The following illustration is for explanation purpose only, the actual
shape of the machine you purchased may be slightly different.
NOTE:All the illustrations in the manual are for explanation purpose only.Your air conditionar
may be slightly different.The actual shape shall prevail.
NOTE: Optional parts( ), depending on model you purchased.
Accessories
(?)
Seal
(Used on
drain joint)
1 1
Screw
2 (For >18000Btu/h models only:
Used to fasten the front panel)
2 or 4 ( Used to install the drain
tray)
Drain Joint
1 pec1pec
Drain Tray Rubber Plug
1or 2
(depend on model you purchased)
(?)(?)
or
8
Wooden screw
(optional)(?)
5
After the unit has stopped, it can not be restarted operation in the first 3
minutes. This is to protect the unit. Operation will automatically start after
3 minutes.
Wait 3 minutes before resuming operation
If the unit breaks off unexpectedly due to the power cut,it will restart with the
previous function setting automatically when the power resumes.
Auto-Restart(on some models)
1. Front panel
2. Air filter
3. Frame
4. Cabinet
5. Air inlet grille (outdoor side)
6. Air outlet grille
7. Electronic control keypad
8. Power supply cord
9. Control panel cover
10. Remote controller
9
MODE
SLEEPLED
CLOCK
CANCEL
TIMER
FAN
RESET
LOCK
CLOCK
E
ON
OFF
SET TEMP.
FAN SPEED
AUTO
F
SWING
10

OPERATING INSTRUCTIONS
Controls
Vent Control
The vent control is located above the control knobs. The operation method is different
on different models (see the following figures).
For maximum cooling efficiency, CLOSE the vent. This will allow internal air circulation.
OPEN the vent to discharge stale air.
The electronic control keypad will look like one of the following:
CLOSE VENT OPEN
To open the vent, pull the lever toward you
To close it, push it in.
To open the vent, set the lever to the right position
To close it, set the lever in the left position.
CLOSE OPEN
6
Cooling Only Model
Fan
Swing
Timer
Mode
SLEEP SWING
HIGH
MED
LOW
COOL
FAN
DRY
TEMP
AUTO
TIMER ON
TIMER OFF
NOTE: The outline of the operation panel is based on typical model, the function is
the same with your air conditioner while some difference may exist in appearance.
NOTE: Some models without MED fan speed feature and (or) swing feature.

OPERATING INSTRUCTIONS
7