Mitsubishi Electric Mr.SLIM PKA-A-KA6 User manual

SPLIT-SYSTEM HEAT PUMP
PKA-A·KA6
PCA-A·KA6
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.
FOR USER
POUR L’UTILISATEUR
English
Français
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.
PARA EL USUARIO Español

2
Contents
1. Safety Precautions
2. Parts Names
PKA-A·KA6
Wall Mounted
ŹBefore installing the unit, make sure you read all the
“Safety Precautions”.
ŹThe “Safety Precautions” provide very important
points regarding safety. Make sure you follow them.
ŹPlease report to or take consent by the supply
authority before connection to the system.
Disposing of the unit
When you need to dispose of the unit, consult 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 intakes or
outlets.
• 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.
• When installing or relocating, or servicing the air conditioner, use
only the specified refrigerant (R410A) to charge the refrigerant
lines. Do not mix it with any other refrigerant and do not allow air
to remain in the lines.
If air is mixed with the refrigerant, then it can be the cause of
abnormal high pressure in the refrigerant line, and may result in
an explosion and other hazards.
The use of any refrigerant other than that speci¿ed for the
system will cause mechanical failure or system malfunction or
unit breakdown. In the worst case, this could lead to a serious
impediment to securing product safety.
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.
• 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 intakes 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.
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.
Indoor Unit
PKA-A·KA6 PCA-A·KA6
Fan speed 3 speeds + Auto 4 speeds + Auto
Vane Auto with swing Auto with swing
Louver Manual Manual
Filter Normal Long-life
Filter cleaning indication 100 hr 2,500 hr
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
7. Troubleshooting.....................................................................6
8. Specifications........................................................................8
9. Operation Manual for IR wireless remote controller..............9
Filter
Air intake
Air outlet
Louver
Vane
Front grille
Emergency operation switch Filter
(Inside of Air intake)
Air intake
Air outlet
Louver
Vane
PCA-A·KA6
Ceiling Suspended

3
Remote controller (Optional parts)
2. Parts Names
Radio frequency interface Wired remote controller IR wireless remote controller
ON/OFF
TEMP.
COOL
DRY
AUTO
FAN
HEAT
RF thermostat
Outdoor unit
Power
Earth
Service Panel
Indoor-Outdoor
Connection wire
Ref. Pipes
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.

4
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. Operation
3.2. Operation mode select
Cool/Dry/Fan/Heat/Automatic (cool/heat)/Ventilation modes are
available.
Note:
zHeat and Automatic mode can not be available for cooling only units.
zVentilation mode: only indicated on the following condition. Wired remote
controller is used and LOSSNAY is connected.
zAutomatic 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, 4 °F 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, 4 °F or more below the set temperature
for 15 minutes, the air conditioner switches to heat mode.
Because the room temperature is automatically adjusted in order to
maintain a fixed effective temperature, cooling operation is performed
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).
Cool mode 15 minutes (switches
from heating to cooling)
Set temperature +2°C, +4°F
Set temperature
Set temperature -2°C, -4°F
15 minutes (switches
from cooling to heating )
3.3. Fan speed setting
Note:
zThe number of available fan speeds depends on the type of unit
connected.
zIn 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:
zDuring swing operation, the directional indication on the screen does not
change in sync with the directional vanes on the unit.
zAvailable directions depend on the type of unit connected.
zIn 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.
• 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.
3.5. Ventilation
ŹFor LOSSNAY combination
zThe following 2 patterns of operation is available.
• Run the ventilator together with the indoor unit.
• Run
t he ventilator independently.
Note:
zWith some model configurations, the fan on the indoor unit may come on
even when you set the ventilator to run independently.
For IR wireless remote controller and RF thermostat
zRunning the ventilator independently is not available.
zNo 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.
About the operation method, refer to the operation manual that comes
with each remote controller.

5
5. Emergency Operation for IR Wireless Remote Controller
[Heat pump type]
[Cooling Only type]
Operation Monitor Display
GREEN ORANGE
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.
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)
Cooling Heating Stop
Cooling Stop
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.
[Fig. 5-1] A DEFROST/STAND BY lamp (Orange)
BOperation lamp (Green)
CEmergency operation switch (cooling/heating)
DReceiver
• 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.)
C
B
A
D


(For PCA-A·KA6)
(For PKA-A·KA6)
Fig. 5-1
Fig. 5-2
[Fig. 5-2]ADEFROST/STAND BY lamp
BOperation lamp
CEmergency operation switch (heating)
DEmergency operation switch (cooling)
EReceiver
Starting operation
• To operate the cooling mode, press the button Dfor more than 2
seconds.
• To operate the heating mode, press the button Cfor more than 2
seconds.
Stopping operation
• To stop operation, press the button Dor the button Cfor more
than 2 seconds.
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:
z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 wired remote controller)
z“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.
zThe filter cleaning period cumulative time differs with the model.
zThis indication is not available for IR wireless remote controller.
ŹCleaning 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.
6. Care and Cleaning
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, 122°F), as this
may warp them.
• Make sure that the air filters are always installed. Operating the
unit without air filters can cause malfunction.
Caution:
• Before you start cleaning, stop operation and turn OFF the power
supply.
• Indoor units are equipped with filters to remove the dust of sucked-
in air. Clean the filters using the methods shown in the following
sketches.

6
6. Care and Cleaning
B
A
ŹFilter 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.
1Using both hands, pull both the bottom corners of the intake grille
to open the grille, then lift the filter until it clicks at the stop position.
2Hold the knobs on the filter and pull the filter up, then pull it out
downward.
(Located in two places, on the left and right.)
AFront grille
BFilter
1Open the intake grille.
2Hold the knob on the filter then pull the filter up in the direction of
an arrow. To replace the filter after cleaning, be sure to insert the
filter far enough until it fits into the stopper.
AFilter BIntake Grille CKnob DStopper
PCA-A·KA6
A
B
CD
PKA-A·KA6
7. Troubleshooting
Having trouble? Here is the solution. (Unit is operating normally.)
Air conditioner does not heat or cool well. 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 intake or outlet blocked?
Has a door or window been left open?
When heating operation starts, warm air does not blow from the indoor
unit soon. Warm air does not blow until the indoor unit has sufficiently warmed
up.
During heating mode, the air conditioner stops before the set room
temperature is reached. 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.
Airflow up/down direction changes during operation or airflow up/down
direction cannot be set. During cooling 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 heating 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 always move
up and down past the set position before finally stopping at the position. When the airflow up/down direction is changed, the vanes move to the
set position after detecting the base position.
A flowing water sound or occasional hissing sound is heard. These sounds can be heard when refrigerant is flowing in the air
conditioner or when the refrigerant flow is changing.
A cracking or creaking sound is heard. These sounds can be heard when parts rub against each due to
expansion and contraction from temperature changes.
The room has an unpleasant odor. 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.
A white mist or vapor is emitted from the indoor unit. 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.
Water or vapor is emitted from the outdoor unit. During cooling mode, water may form and drip from the cool pipes
and joints.
During heating 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.

7
7. Troubleshooting
Having trouble? Here is the solution. (Unit is operating normally.)
“ ” appears in the wired remote controller display. (*1) During central control, “ ” appears in the wired remote controller
display and air conditioner operation cannot be started or stopped
using 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. Wait approximately 3 minutes.
(Operation has stopped to protect the air conditioner.)
Air conditioner operates without the ON/OFF button being pressed. (*1) 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 “ ” appear in the wired remote controller display?
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.
Air conditioner stops without the ON/OFF button being pressed. (*1) 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 “ ” appear in the wired remote controller display?
Consult the concerned people who control the air conditioner.
Wired remote controller timer operation cannot be set. (*1) Are timer settings invalid?
If the timer can be set, or appears in the wired remote
controller display.
“PLEASE WAIT” appears in the wired remote controller display. (*1) The initial settings are being performed. Wait approximately 3
minutes.
An error code appears in the remote controller display. 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.
Draining water or motor rotation sound is heard. When cooling operation stops, the drain pump operates and then
stops. Wait approximately 3 minutes.
When dry mode starts, the set temperature changes. When Dry mode starts, the set temperature automatically changes to
the optimum initial set temperature.
Noise is louder than specifications. The indoor operation sound level is affected by the acoustics of the
particular room as shown in the following table and will be higher than
the noise specification, which was measured in an echo-free room.
High sound-
absorbing rooms Normal rooms Low sound- absorbing rooms
Location
examples Broadcasting studio, music
room, etc.
Reception room,
hotel lobby, etc. Office, hotel room
Noise levels 3 to 7 dB 6 to 10 dB 9 to 13 dB
Nothing appears in the IR wireless remote controller display, the display
is faint, or signals are not received by the indoor unit unless the IR
wireless remote controller is close. (*2)
The batteries are low.
Replace the batteries and press the Reset button.
If nothing appears even after the batteries are replaced, make sure
that the batteries are installed in the correct directions (+, –).
The operation lamp near the receiver for the IR wireless remote
controller on the indoor unit is blinking. (*2) The self diagnosis function has 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.
*1: Only for wired remote controller.
*2: Only for IR wireless remote controller.

8
8. Specifications
Model PKA-A24KA6 PKA-A30KA6 PKA-A36KA6
Power source (Phase, voltage <V>, Frequency <Hz>) Single, 208/230, 60
Rated Input (Indoor only) <kW> 0.05 0.05 0.08
Rated Current (Indoor only) <A> 0.36 0.36 0.57
Heater <kW> – – –
Dimension (Height) <inch> 14-3/8
Dimension (Width) <inch> 46-1/16
Dimension (Depth) <inch> 11-5/8
Airflow (Low-Middle-High) <CFM> 635-705-775 705-810-920
Noise level (Low-Middle-High) <dB> 39-42-45 41-45-49
Net weight <lbs> 46
Model PCA-A24KA6 PCA-A30KA6 PCA-A36KA6 PCA-A42KA6
Power source (Phase, Voltage <V>, Frequency <Hz>) Single, 208/230, 60
Fan motor <FLA> 0.54 0.97
MCA <A> 1 2
MOCP <A> 15
Dimension (Height) <inch> 9-1/16
Dimension (Width) <inch> 50-3/8 63
Dimension (Depth) <inch> 26-3/4
Airflow
(Low-Middle2-Middle1-High) DRY <CFM>
530-565-600-670 565-600-635-705 775-850-920-990 810-885-955-1025
WET <CFM> 495-530-565-635 530-565-600-670 705-775-850-920 740-810-885-955
Noise level (Low-Middle2-Middle1-High) <dB> 33-35-37-40 35-37-39-41 37-39-41-43 39-41-43-45
Net weight <lbs> 71 79 86

9
9. Operation Manual for IR wireless remote controller
9.1 Parts Names
Note:
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 2 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 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 blinking, 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.
Battery installation/replacement
1. Remove the top cover, insert 2 AAA batteries,
and then install the top cover.
12
3
2. Press the Reset button.
2 AAA batteries
Insert the negative (–)
end of each battery first.
Install the batteries in
the correct directions
(+, –)!
Press the Reset
button with an object
that has a narrow end.
Top cover
MODEL
SELECT
NOTAVAILABLE
SWING
CHECK
FAN
TEST
RUN
°F
°C
AMPMSTOP
START
AMPM
COOL
DRY
AUTO
FAN
HEAT
* For explanation purposes, all of the items
that appear in the display are shown.
* All items are displayed when the Reset
button is pressed.
Transmission indicator
Timer indicator
Remote controller display
ON/OFF button
Set Temperature buttons
Fan Speed button (Changes fan speed)
AirÀow button (Changes up/down airÀow direction)
Mode button (Changes operation mode)
Check button
Test Run button
Transmission area
Operation areas
Timer Off button
Timer On button
Hour button
Minute button
Set Time button (Sets the time)
Louver button (Changes left/right airÀow direction)
Reset button

10
9. Operation Manual for IR wireless remote controller
<To Stop Operation>
ŶPress the ON/OFF button 1again.
• The display area go dark.
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 3 minutes.
This is to prevent the internal components from being damaged.
ÛF
COOL
1
26
5
3
2
5
6
3
<To Start Operation>
ŶPress the ON/OFF button 1.
• The display area come on.
9.2.3. Temperature setting
To decrease the room temperature:
Press button 3to set the desired temperature.
The selected temperature is displayed 3.
To increase the room temperature:
Press button 3to set the desired temperature.
The selected temperature is displayed 3.
• Available temperature ranges are as follows:
Cooling/Drying: 19 - 30 °C, 67 - 87 °F
Heating: 17 - 28 °C, 63 - 83 °F
Automatic: 19 - 28 °C, 67 - 83 °F
9.2. Operation
9.2.1. Turning ON/OFF
9.2.4. Fan speed setting
ŶPress the Fan Speed button 5as many times as necessary while the
system is running.
• Each press changes the force. The currently selected speed is
shown at 5.
• The change sequence, and the available settings, are as follows.
FAN SPEED Display
4-speed
+
Auto
3-speed
+
Auto
Speed 1 Speed 2 Speed 3 Speed 4 Auto
Speed 1 Speed 2 Speed 3 Auto
Remote controller Display
Wired type
IR Wireless
remote controller
Swing Auto 1 2 345
Swing 2341
9.2.5. Airflow direction setting
<To Change the Airflow’s Up/Down Direction>
Ŷ
With the unit running, press the Airflow Up/Down button 6as necessary.
• Each press changes the direction. The current direction is shown at
6.
• The change sequence, and the available settings, are as follows.



COOL
9.3 Timer
1Press the or button (TIMER SET).
• Time can be set while the following symbol is blinking.
OFF timer: A is blinking.
ON timer: A is blinking.
2Use the and buttons to set the desired time.
3Cancelling the timer.
To cancel the OFF timer, press the button.
To cancel the ON timer, press the button.
• It is possible to combine both OFF and ON timers.
• Pressing the ON/OFF button of the remote controller during timer
mode to stop the unit will cancel the timers.
• If the current time has not been set, the timer operation cannot be
used.
9.2.2. Operation mode select
ŶPress the operation mode button 2and select the operation mode 2.
(COOL) Cooling mode
(DRY) Drying mode
(FAN) Fan mode
(HEAT) Heating mode
(AUTO) Automatic (cooling/heating) mode
ON/OFF button