MITSUBISHI PKA-A-KA4 User Manual
Air-Conditioners
Indoor unit
PKA-A·KA4
OPERATION MANUAL
For safe and correct use, please read this operation manual thoroughly before operating the air-conditioner unit.
MANUEL D’UTILISATION
Pour une utilisation correcte sans risques, veuillez lire le manuel d’utilisation en entier avant de vous servir du
climatiseur.
MANUAL DE INSTRUCCIONES
Lea este manual de instrucciones hasta el final antes de poner en marcha la unidad de aire acondicionado
para garantizar un uso seguro y correcto.
FOR USER
POUR L’UTILISATEUR
PARA EL USUARIO
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Contents
1. Safety Precautions ................................................................2
2. Parts Names ..........................................................................2
3. Operation ...............................................................................4
4. Timer .....................................................................................4
5. Emergency Operation for IR Wireless Remote controller .....5
6. Care and Cleaning ................................................................5
1. Safety Precautions
►
Before installing the unit, make sure you read all the
“Safety Precautions”.
► The “Safety Precautions” provide very important
points regarding safety. Make sure you follow them.
► Please report to or take consent by the supply
authority before connection to the system.
Warning:
• For appliances not accessible to the general public.
• The unit must not be installed by the user. Ask the dealer or an
authorized company to install the unit. If the unit is installed
improperly, water leakage, electric shock or fire may result.
• Do not stand on, or place any items on the unit.
• Do not splash water over the unit and do not touch the unit with
wet hands. An electric shock may result.
• Do not spray combustible gas close to the unit. Fire may result.
• Do not place a gas heater or any other open-flame appliance
where it will be exposed to the air discharged from the unit.
Incomplete combustion may result.
• Do not remove the front panel or the fan guard from the outdoor
unit when it is running.
7. Troubleshooting .....................................................................6
8. Specifications ........................................................................7
Symbols used in the text
Warning:
Describes precautions that should be observed to prevent danger
of injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage
to the unit.
Symbols used in the illustrations
: Indicates a part which must be grounded.
• When you notice exceptionally abnormal noise or vibration, stop
operation, turn off the power switch, and contact your dealer.
• Never insert fingers, sticks etc. into the air inlets or outlets.
• If you detect odd smells, stop using the unit, turn off the power
switch and consult your dealer. Otherwise, a breakdown, electric
shock or fire may result.
• This air conditioner is NOT intended for use by children or infirm
persons without supervision.
• Young children must be supervised to ensure that they do not
play with the air conditioner.
• If the refrigeration gas blows out or leaks, stop the operation of
the air conditioner, thoroughly ventilate the room, and contact
your dealer.
Caution:
• Do not use any sharp object to push the buttons, as this may
damage the remote controller.
• Never block or cover the indoor or outdoor unit’s air inlets or
outlets.
2. Parts Names
Indoor Unit
PKA-A·KA4
Fan speed 3 speeds (with auto)
Vane Auto with swing
Louver Manual
Filter Normal
Filter cleaning indication 100 hr
Disposing of the unit
When you need to dispose of the unit, consult your dealer.
PKA-A·KA4
Front grille
Filter
Air inlet
Air outlet
Emergency operation switch
Louver
Vane
2
2. Parts Names
Remote controller (Optional parts)
Radio frequency interface Wired remote controller IR wireless remote controller
RF thermostat
COOL
DRY
AUTO
FAN
HEAT
TEMP.
ON/OFF
Note: (Only for IR wireless remote controller)
When using the IR wireless remote controller, point it towards the receiver on the indoor unit.
If the IR wireless remote controller is operated within approximately two minutes after power is supplied to the indoor unit, the indoor unit may beep
twice as the unit is performing the initial automatic check.
The indoor unit beeps to confirm that the signal transmitted from the IR wireless remote controller has been received. Signals can be received up to
approximately 7 meters, 275 19/32 inch in a direct line from the indoor unit in an area 45° to the left and right of the unit. However, illumination such
as fluorescent lights and strong light can affect the ability of the indoor unit to receive signals.
If the operation lamp near the receiver on the indoor unit is flashing, the unit needs to be inspected. Consult your dealer for service.
Handle the IR wireless remote controller carefully! Do not drop the IR wireless remote controller or subject it to strong shocks. In addition, do not get
the IR wireless remote controller wet or leave it in a location with high humidity.
To avoid misplacing the IR wireless remote controller, install the holder included with the IR wireless remote controller on a wall and be sure to
always place the IR wireless remote controller in the holder after use.
Outdoor unit
Power
Ref. Pipes
Indoor-Outdoor
Connection wire
Earth
Service Panel
3
3. Operation
About the operation method, refer to the operation manual that comes
with each remote controller.
3.1. Turning ON/OFF
Note:
Even if you press the ON/OFF button immediately after shutting down
the operation is progress, the air conditioner will not start for about three
minutes. This is to prevent the internal components from being damaged.
3.2. Operation mode select
Cool/Dry/Fan/Heat/Automatic (cool/heat)/Ventilation modes are
available.
Note:
Heat and Automatic mode can not be available for cooling only units.
Ventilation mode: only indicated on the following condition. Wired remote
controller is used and LOSSNAY is connected.
Automatic mode
According to a set temperature, cooling operation starts if the room
temperature is too hot and heating operation starts if the room
temperature is too cold.
During automatic operation, if the room temperature changes and
remains 2 °C or more above the set temperature for 15 minutes, the
air conditioner switches to cool mode. In the same way, if the room
temperature remains 2 °C or more below the set temperature for 15
minutes, the air conditioner switches to heat mode.
Cool mode
15 minutes (switches
from cooling to heating )
15 minutes (switches
from heating to cooling)
Set temperature +2°C, +4°F
Set temperature
Set temperature -2°C, -4°F
3.3. Fan speed setting
Note:
The number of available fan speeds depends on the type of unit
connected.
In the following cases, the actual fan speed generated by the unit will differ
from the speed shown the remote controller display.
1. When the unit is in “STAND BY” or “DEFROST” states.
2. When the temperature of the heat exchanger is low in the heat mode.
(e.g. immediately after heat operation starts)
3. In HEAT mode, when room temperature is higher than the temperature
setting.
4. When the unit is in DRY mode.
3.4. Airflow up/down direction setting
Note:
During swing operation, the directional indication on the screen does not
change in sync with the directional vanes on the unit.
Available directions depend on the type of unit connected.
In the following cases, the actual air direction will differ from the direction
indicated on the remote controller display.
1. When the unit is in “STAND BY” or “DEFROST” states.
2. Immediately after starting heater mode (while the system is waiting for
the operation mode change to take effect).
3. In heat mode, when room temperature is higher than the temperature
setting.
<[Manual] To Change the Airflow’s Left/Right Direction>
* The louver button cannot be used.
Model PKA-A·KA4
• Stop the unit operation, hold the lever of the louver airflow vanes, and
adjust to the desired direction.
* Do not set to the inside direction when the unit is in
the cooling or drying mode because there is a risk
of condensation and water dripping.
Caution:
To prevent falls, maintain a stable footing when operating the unit.
Because the room temperature is automatically adjusted in order to
maintain a fixed effective temperature, cooling operation is performed
3.5. Ventilation
► For LOSSNAY combination
a few degrees warmer and heating operation is performed a few
degrees cooler than the set room temperature once the temperature is
reached (automatic energy-saving operation).
The following 2 patterns of operation is available.
• Run the ventilator together with the indoor unit.
t
he ventilator independently.
• Run
Note: (for IR wireless remote controller and RF thermostat)
Running the ventilator independently is not available.
No indication on the remote controller.
4. Timer
Timer functions are different by each remote controller.
For details on how to operate the remote controller, refer to the appropriate operation manual included with each remote controller.
4
5. Emergency Operation for IR Wireless Remote Controller
[Combination Cooling and Heating Models]
Cooling
B
C
When the IR wireless remote controller cannot be used
When the batteries of the IR wireless remote controller run out or the IR
wireless remote controller malfunctions, the emergency operation can be
done using the emergency buttons on the grille.
DEFROST/STAND BY lamp (Orange)
Operation lamp (Green)
Emergency operation switch (cooling/heating)
Receiver
• Each press of the emergency operation switch will toggle the
operation mode.
• Check “COOL/HEAT” with the operation monitor display. (The display
will appear orange for 5 seconds after the switch operation.)
A
D
[Cooling Only Models]
Cooling Stop
Operation Monitor Display
GREEN ORANGE
STOP
COOL
HEAT
Turning off Lighting
* Operation details at the time of emergency operation are as shown
below.
Note that over the first 30 minutes or so, the temperature adjustment
will not function and the unit will be in continuous operation with the fan
on high.
Operation Mode COOL HEAT
Set Temperature 24°C, 75°F 24°C, 75°F
Fan Speed High High
Airflow Direction Up and Down Setting 1 Setting 4 (5)
6. Care and Cleaning
Heating Stop
The display will appear orange for 5
seconds following the switch operation
as indicated at the left, and then it will
return to the regular display.
Following indication shows that the filter needs cleaning.
• Wired remote controller : “FILTER”
• RF thermostat: “Clean Filter”
• ASK authorized people to clean the filter.
When resetting “FILTER” or “Clean Filter” display. Resetting the
indication, refer to the operation manual of each remote controller.
Note:
When two or more different types of indoor unit are controlled, the
cleaning period differs with the type of filter. When the master unit
cleaning period arrives, “FILTER” is displayed. When the filter display
goes off, the cumulative time is reset. (only for wird remote controller)
“FILTER” or “Clean Filter” indicates the cleaning period when the air
conditioner was used under general indoor air conditions by criteria time.
Since the degree of dirtiness depends on the environmental conditions,
clean the filter accordingly.
The filter cleaning period cumulative time differs with the model.
This indication is not available for IR wireless remote controller.
► Cleaning the filters
• Clean the filters using a vacuum cleaner. If you do not have a vacuum
cleaner, tap the filters against a solid object to knock off dirt and dust.
• If the filters are especially dirty, wash them in lukewarm water. Take
care to rinse off any detergent thoroughly and allow the filters to dry
completely before putting them back into the unit.
Caution:
• Do not dry the filters in direct sunlight or by using a heat source,
such as an electric heater: this may warp them.
• Do not wash the filters in hot water (above 50°C), as this may
warp them.
• Make sure that the air filters are always installed. Operating the
unit without air filters can cause malfunction.
► Filter removal
Caution:
• In removing the filter, precautions must be taken to protect your
eyes from dust. Also, if you have to climb up on a stool to do the
job, be careful not to fall.
• When the filter is removed, do not touch the metallic parts inside
the indoor unit, otherwise injury may result.
A
B
Using both hands, pull both the bottom corners of the inlet grille to
open the grille, then lift the filter until it clicks at the stop position.
Hold the knobs on the filter and pull the filter up, then pull it out
downward.
(Located in two places, on the left and right.)
Front grille
Filter
Caution:
• Before you start cleaning, stop operation and turn OFF the power
supply.
• Indoor units are equipped with filters to remove the dust of suckedin air. Clean the filters using the methods shown in the following
sketches.
5
7. Troubleshooting
WEEKLY
SIMPLE
AUTO OFF
Having trouble? Here is the solution. (Unit is operating normally.)
Air conditioner does not heat or cool well.
When heating operation starts, warm air does not blow from the indoor
unit soon.
During heat mode, the air conditioner stops before the set room
temperature is reached.
Airflow up/down direction changes during operation or airflow up/down
direction cannot be set.
When the airflow up/down direction is changed, the vanes always move
up and down past the set position before finally stopping at the position.
A flowing water sound or occasional hissing sound is heard.
A cracking or creaking sound is heard.
The room has an unpleasant odor.
A white mist or vapor is emitted from the indoor unit.
Water or vapor is emitted from the outdoor unit.
The operation indicator does not appear in the wired remote controller
display. (*1)
” appears in the wired remote controller display. (*1) During central control, “ ” appears in the wired remote controller
“
When restarting the air conditioner soon after stopping it, it does not
operate even though the ON/OFF button is pressed.
Air conditioner operates without the ON/OFF button being pressed. (*1)
Air conditioner stops without the ON/OFF button being pressed. (*1)
Wired remote controller timer operation cannot be set. (*1)
“PLEASE WAIT” appears in the wired remote controller display. (*1)
An error code appears in the remote controller display.
Draining water or motor rotation sound is heard.
When dry mode starts, the set temperature changes.
Clean the filter. (Airflow is reduced when the filter is dirty or clogged.)
Check the temperature adjustment and adjust the set temperature.
Make sure that there is plenty of space around the outdoor unit. Is the
indoor unit air inlet or outlet blocked?
Has a door or window been left open?
Warm air does not blow until the indoor unit has sufficiently warmed
up.
When the outdoor temperature is low and the humidity is high,
frost may form on the outdoor unit. If this occurs, the outdoor unit
performs a defrosting operation. Normal operation should begin after
approximately 10 minutes.
During cool mode, the vanes automatically move to the horizontal
(down) position after 1 hour when the down (horizontal) airflow up/
down direction is selected. This is to prevent water from forming and
dripping from the vanes.
During heat mode, the vanes automatically move to the horizontal
airflow up/down direction when the airflow temperature is low or
during defrosting mode.
When the airflow up/down direction is changed, the vanes move to the
set position after detecting the base position.
These sounds can be heard when refrigerant is flowing in the air
conditioner or when the refrigerant flow is changing.
These sounds can be heard when parts rub against each due to
expansion and contraction from temperature changes.
The indoor unit draws in air that contains gases produced from the
walls, carpeting, and furniture as well as odors trapped in clothing,
and then blows this air back into the room.
If the indoor temperature and the humidity are high, this condition may
occur when operation starts.
During defrosting mode, cool airflow may blow down and appear like a
mist.
During cool mode, water may form and drip from the cool pipes and
joints.
During heat mode, water may form and drip from the heat exchanger.
During defrosting mode, water on the heat exchanger evaporates and
water vapor may be emitted.
Turn on the power switch. “
controller display.
display and air conditioner operation cannot be started or stopped
using the wired remote controller.
Wait approximately three minutes.
(Operation has stopped to protect the air conditioner.)
Is the on timer set?
Press the ON/OFF button to stop operation.
Is the air conditioner connected to a central wired remote controller?
Consult the concerned people who control the air conditioner.
Does “
Consult the concerned people who control the air conditioner.
Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
Is the off timer set?
Press the ON/OFF button to restart operation.
Is the air conditioner connected to a central wired remote controller?
Consult the concerned people who control the air conditioner.
Does “
Consult the concerned people who control the air conditioner.
Are timer settings invalid?
If the timer can be set,
the wired remote controller display.
The initial settings are being performed. Wait approximately 3
minutes.
The protection devices have operated to protect the air conditioner.
Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be
sure to provide the dealer with the model name and information that
appeared in the remote controller display.
When cooling operation stops, the drain pump operates and then
stops. Wait approximately 3 minutes.
When Dry mode starts, the set temperature automatically changes to
the optimum initial set temperature.
” appear in the wired remote controller display?
” appear in the wired remote controller display?
” will appear in the wired remote
,
, or
appears in
6
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