Mitsubishi Electric 2.5KKC User manual

FOR USER
EOPERATION MANUAL
For safe and correct use, please read this operation manual thoroughly before operating the air-conditioner unit.
Air-Conditioners
PLH-2, 2.5KKC
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN

2
E
ss
ss
sSince this unit contains rotating parts and parts which
could cause an electric shock,be sure to read all of the
“Safety Precautions” before operating the unit.
ss
ss
s“Safety Precautions”lists important points about safety.
Please be sure to follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to avoid the risk 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 an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This sym-
bol is displayed on the main unit label.) <Color: Yellow>
: Indicates the main switch. (This symbol is displayed on the main
unit label.) <Color: Blue>
Warning:
Carefully read the labels affixed to the main unit.
1. Safety Precautions
1. Safety Precautions ...................................................................... 2
1.1. Installation ..................................................................... 2
1.2. During operation ............................................................ 4
1.3. Disposing of the unit ...................................................... 5
2. Introduction ................................................................................. 6
3. Components ................................................................................ 6
3.1. Indoor unit and remote controller ................................... 6
3.2. Outdoor unit ................................................................... 7
4. Operation .................................................................................... 7
4.1. Operation modes ........................................................... 7
4.2. Switching the unit on/off ................................................ 8
4.3. Cooling .......................................................................... 8
4.4. Drying (dehumidifying) ................................................... 9
4.5. Heating .......................................................................... 9
4.6. Automatic (cooling / heating) ....................................... 10
4.7. Selecting a temperature .............................................. 10
4.8. Using the timer ............................................................ 11
4.9. Selecting a fan speed .................................................. 13
4.10.Adjusting vertical airflow direction ............................... 14
4.11.Vertical airflow adjustment ........................................... 14
5. Tips for best results ................................................................... 15
6. Care and cleaning ..................................................................... 15
6.1. Cleaning the filters and the indoor unit ........................ 15
6.2. Care and cleaning ....................................................... 16
6.3. End-of-season ............................................................. 17
6.4. Pre-season checks ...................................................... 17
7. Troubleshooting ........................................................................ 18
8. Specifications ............................................................................ 19
Contents
1.1. Installation
Warning:
• The unit should not be installed by the user. Ask the dealer or an
authorized company to install the unit. If the unit is installed im-
properly, water leakage, electric shock or fire may result.
• Use only accessories authorized by Mitsubishi Electric and ask
your dealer or an authorized company to install them. If accesso-
ries are installed improperly, water leakage, electric shock or fire
may result.
• The Installation Manual details the suggested installation method.
Any structural alteration necessary for installation must comply
with local building code requirements.
• Never repair the unit or transfer it to another site by yourself. If
repair is performed improperly, water leakage, electric shock or
fire may result. If you need to have the unit repaired or moved,
consult your dealer.
E

3
E
1.1. Installation
1) Outdoor unit
Warning:
•The outdoor unit must be installed on a stable, level surface, in a
place where there is no accumulation of snow, leaves or rubbish.
•Do not stand on, or place any items on the unit. You may fall
down or the item may fall, causing injury.
Caution:
The outdoor unit should be installed in a location where air and noise
emitted by the unit will not disturb the neighbours.
2) Indoor unit
Warning:
The indoor unit should be securely installed. If the unit is loosely
mounted, it may fall, causing injury.
1. Safety Precautions
1.1. Installation
3) Remote controller
Warning:
The remote controller should be installed in such a way that children
cannot play with it.
4) Drain hose
Caution:
Make sure that the drain hose is installed so that drainage can go
ahead smoothly. Incorrect installation may result in water leakage,
causing damage to furniture.

4
E
1.1. Installation
5) Power line, fuse or circuit breaker
Warning:
•Make sure that the unit is powered by a dedicated line. Other ap-
pliances connected to the same line could cause an overload.
•Make sure that there is a main power switch.
•Be sure to adhere to the unit’s voltage and fuse or circuit breaker
ratings. Never use a piece of wire or a fuse with a higher rating
than the one specified.
AFuse or circuit breaker
BMain power switch
6) Grounding
Caution:
•The unit must be properly grounded. Never connect the ground-
ing wire to a gas pipe, water pipe, lightning conductor or telephone
grounding wire. If the unit is not grounded properly, electric shock
may result.
•Check frequently that the ground wire from the outdoor unit is
properly connected to both the unit’s ground terminal and the
grounding electrode.
CGrounding electrode
1. Safety Precautions
A
B
C
1.2. During operation
Caution:
•Do not use any sharp object to push the buttons, as this may
damage the remote controller.
•Do not twist or tug on the remote controller cord as this may dam-
age the remote controller and cause malfunction.
•Never block or cover the indoor or outdoor unit’s intakes or out-
lets. Tall items of furniture underneath the indoor unit, or bulky
items such as large boxes placed close to the outdoor unit will
reduce the unit’s efficiency.
Warning:
•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.
MITSUBISHI
ON/OFF –
STANDBY
DEFROST
CENTRALLYCONTROLLED
˚C
CLOCK
ONOFF
˚C
1Hr.
NOTAVAILABLE
CHECKMODE
FILTER
CHECK
TESTRUN

5
E
1.2. During operation
Warning:
•Do not remove the front panel or the fan guard from the outdoor
unit when it is running. You could be injured if you touch rotat-
ing, hot or high-voltage parts.
•Never insert fingers, sticks etc. into the intakes or outlets, other-
wise injury may result, since the fan inside the unit rotates at
high speed. Exercise particular care when children are present.
•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.
•Do not over-cool. The most suitable inside temperature is one
that is within 5°C of the outside temperature.
•Do not leave handicapped people or infants sitting or standing in
the path of the airflow from the air-conditioner. This could cause
health problems.
Caution:
•Do not direct the airflow at plants or caged pets.
•Ventilate the room frequently. If the unit is operated continuously
in a closed room for a long period of time, the air will become
stale.
1. Safety Precautions
1.3. Disposing of the unit
Warning:
When you need to dispose of the unit, consult your dealer. If pipes
are removed incorrectly, refrigerant (fluorocarbon gas) may blow out
and come into contact with your skin, causing injury. Releasing re-
frigerant into the atmosphere also damages the environment.

6
E2. Introduction
3. Components
This air-conditioner unit is designed for maximum efficiency and ease of
use. You can use it to cool, heat or dehumidify a room by making the
appropriate settings on the wall-mounted remote controller. Once you have
made your settings, operating the unit is usually a matter of simply press-
ing the POWER ON/OFF button.
The automatic cooling/heating mode allows setting of an optimum room
temperature to which the air conditioner automatically adjust the room
temperature.
ss
ss
sAfter you have read this manual, keep it and the Installation Manual
in a safe place for easy reference whenever a question arises. If
the unit is going to be operated by another person, make sure
that this manual is given to him or her.
AIndoor unit
BRemote controller
3.1. Indoor unit and remote controller
The indoor unit is mounted into the ceiling of your room and puts out air
(cool, warm or dry) according to the settings you make using the remote
controller mounted on the wall.
AAir intake: Draws air in a room.
BHorizontal air outlet: To be automatically set in the horizontal blowing posi-
tion in either COOL or DRY mode operation.
CDownward air outlet
DAutomated vane: Helps circulate air upward and downward or adjusts air-
flow direction.
EAir filter
FDecorative panel
GRemote controller
G
ON/OFF –
STANDBY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
E
B
A
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
A
D
F
C
B
E

7
E3. Components
3.2. Outdoor unit
The outdoor unit takes in and feeds outside air to the indoor unit and
exhausts heated air in the cooling or dehumidifying mode, or cool air in
the heating mode.
AAir outlet
BAir intake
B
A
PUH-2.5KA
4. Operation
4.1. Operation modes
Cooling
The air conditioner works to cool the room to the selected temperature.
The fan blows air continuously at the selected speed.
Drying (dehumidifying) : Disabled in the heat-
ing mode
The drying mode efficiently reduces the humidity in the room so that the
room temperature is not lowered excessively. When the selected room
temperature is reached in the Low setting, the airflow will stop for ten
minutes and then will resume for three minutes to keep the humidity low.
Heating
•The air conditioner works to heat the room to the selected tempera-
ture.
•When selecting the heating mode, a desired room temperature must
be set to avoid any cool air. The fan will gradually increase the airflow
delivery up to a selected rate.
•When the room temperature reaches the selected temperature and
the compressor stops, the fan will deliver a gentle airflow.
Automatic (cooling / heating)
The air conditioner automatically goes into the cooling or heating mode to
keep the room at the selected temperature.
E
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
B
A
PUH-2KA

8
E4. Operation
4.2. Switching the unit on/off
ss
ss
sBefore pressing the ON/OFF button:
•Check to see if the power supply is on.
•The power supply should not be turned off while the air conditioner is
in use. This can cause the unit to break down.
1Press the ON/OFF button.
AThe ON indicator should light up.
Note:
•Even if you press the ON/OFF button immediately after shutting
down the operation in progress, the air conditioner will not start
for about three minutes. This is to prevent the internal compo-
nents from being damaged.
•If the operation stops due to a power failure, the unit will not au-
tomatically restart until the power has been restored. Press the
ON/OFF button to restart.
4.3. Cooling
1If the unit is off, press the ON/OFF button to turn it on.
AThe ON indicator should light up.
2Press the operation mode button and select the
cooling mode .
Bshould be displayed.
3If necessary, press
TEMP.
button to set the desired temperature.
See page 10 for details.
4If necessary, press button to select a desired rate.
See page 13 for details.
5If necessary, press to specify the vertical angle at which the
air is blowing.
See page 14 for details.
6If necessary, press button to set the timer.
See page 11 for details.
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
A
1
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A
B
56 42 3

9
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4.4. Drying (dehumidifying)
1If the unit is off, press the ON/OFF button to turn it on.
AThe ON indicator should light up.
2Press the operation mode button and select the
drying mode .
Bshould be displayed.
3If necessary, press
TEMP.
button to set the desired temperature.
See page 10 for details.
4If necessary, press to specify the vertical angle at which the
air is blowing.
See page 14 for details.
5If necessary, press button to set the timer setting.
See page 11 for details.
Note:
•When the room temperature is lower than 18°C, the drying mode
cannot be set.
•This reduces the operation level of the indoor fan.
See page 13 for details.
•There may be times when the airflow volume does not match the
display on the remote control unit.
4. Operation
4.5. Heating
1If the unit is off, press the ON/OFF button to turn it on
AThe ON indicator should light up.
2Press the operation mode button and select the
heating mode .
Bshould be displayed.
3If necessary, press
TEMP.
button to set the desired temperature.
See page 10 for details.
4If necessary, press button to select a desired rate.
See page 13 for details.
5If necessary, press to specify the vertical angle at which the
air is blowing.
See page 14 for details.
6If necessary, press button to set the timer.
See page 11 for details.
The fan speed may differ from the set speed at the start of the heating
mode, during the defrosting mode, or after shutdown of the heating mode.
C“STAND BY”is displayed from the moment heating begins until warm air is
blown out.
D“DEFROST”is displayed during defrosting.
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A
B
2
45
3
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A
C
D
2
3
56 4
B

10
E4. Operation
4.6. Automatic (cooling / heating)
The AUTO mode starts with cooling or heating depending on the current
room temperature, higher or lower, than a selected temperature value
accordingly.
1If the unit is off, press the ON/OFF button to turn it on.
AThe ON indicator should light up.
2Press the operation mode button to select the
automatic mode .
Bshould be displayed.
3If necessary, press
TEMP.
button to set the desired temperature.
See page 10 for details.
4If necessary, press button to select a desired rate.
See page 13 for details.
5If necessary, press to specify the vertical angle at which the
air is blowing.
See page 14 for details.
6If necessary, press button to set the timer.
See page 11 for details.
4.7. Selecting a temperature
TEMP.
ss
ss
sTo decrease the room temperature:
1Press
TEMP.
button to set the desired temperature.
AThe selected temperature is displayed.
•Each time you press the button, the temperature value decreases by
1°C.
ss
ss
sTo increase the room temperature:
1Press
TEMP.
button to set the desired temperature.
AThe selected temperature is displayed.
•Each time you press the button, the temperature value increases by
1°C.
•Available temperature ranges are as follows:
Cooling & Drying: 19 - 30°C
Heating: 17 - 28°C
Automatic: 19 - 28°C
Circulation: —(Not available)
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A
B
2
546
3
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A

11
E4. Operation
4.8. Using the timer
ON OFFCLOCK
ss
ss
sAvailable Timer-Interlocked Operation Modes
1. AUTO START/STOP: Allows both start and shutdown to be interlocked
with the timer.
2. AUTO START: Allows automatic start in response to the timer setting
and shutdown to be proceeded by manually pressing the ON/OFF but-
ton.
3. AUTO STOP: Allows the start of the operation to be manually invoked
by pressing the ON/OFF button and automatic shutdown based on the
timer setting.
ss
ss
sTimer-interlocked operation is available only once for both start
and shutdown in 24 hours.
ss
ss
sWhile Ais displayed, setting and changing of time for timer-
interlocked operation is disabled.
1In this case, press button once to turn off the A display
on the remote controller. This is referred to as TIMER OFF opera-
tion.
4.8. Using the timer
ON OFFCLOCK
1) Set the current time
1Press
ON OFFCLOCK
button to display the “CLOCK”B.
•Each time you press
ON OFFCLOCK
button, the display on the remote con-
troller cyclically changes as follows.
Remote CLOCK →
CLOCK
ON
→
CLOCK
OFF
→ No Display
controller display A
2Each time you press
TIMER SET
button, the time increases in incre-
ments of one minute. Each time you press
TIMER SET
button, the time
decreases in increments of one minute .
•Press and hold the button to rapidly change the time.
•The time changes in increments of one minute → ten minutes → in
units of hour; in this order.
•Approximately ten seconds after pressing the button, the display on
the remote controller will turn off.
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
A
1
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
2
AB
↑

12
E4. Operation
4.8. Using the timer
ON OFFCLOCK
2) Set the time to start the unit as follows
1Press
ON OFFCLOCK
button to display B
ON
.
2Press
TIMER SET
button to set the time that you want the unit to start.
The start time is displayed at A.
3) Set the time to stop the unit as follows
1Press
ON OFFCLOCK
button to display C
OFF
.
2Press
TIMER SET
button to set the time that you want the unit to stop.
The stop time is displayed at A.
4) Changing the set times
1Press
ON OFFCLOCK
button to display the time (CURRENT, START,
STOP) you want to change.
2Press
TIMER SET
button to set the desired time.
•When change is made to either one of a pair, e.g., AUTO START or
AUTO STOP, set the time you need not to change to . This
display is available following 23:50.
4.8. Using the timer
ON OFFCLOCK
5) AUTO START and AUTO STOP operation
1Press
ON OFFCLOCK
button to make the following checks.
Check that the current time is correct.
Check that the automatic start time is correct.
Check that the automatic shutdown time is correct.
•For selection or changing of time, see the previous page (page 11) .
•The next operation time is displayed after approximately 10 seconds.
3Press button to display A on the remote controller.
•Each time you press button, available options change as follows
with relative displays on the remote controller.
Remote controller display —↔ A
Available setting —Timer-interlocked operation
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
A
3 1
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
2
CBA

13
E4. Operation
4.8. Using the timer
ON OFFCLOCK
6) AUTO START Operation
1Press
ON OFFCLOCK
button to make the following checks.
Check that the current time is correct.
Check that the automatic start time is correct.
Check that the automatic shutdown time is identical to the dis-
play A.
•For the selection of the time, see the previous page (page 11) .
3Press button once to display C
ON
on the remote controller.
7) AUTO STOP Operation
1Press
ON OFFCLOCK
button to make the following checks.
Check that the current time is correct.
Check that the automatic shutdown time is correct.
Check that the automatic start time is identical to the display A
.
•For the selection of the time, see the previous page (page 11) .
3Press button to display D
OFF
on the remote controller.
4.9. Selecting a fan speed
1Press button to select a desired fan speed.
•Each time you press the button, available options change with the
display Aon the remote controller, as shown below.
Display
Available
Option (Fan Speed Switch) Low - High
•In the drying mode , the selection of the fan speed is disabled.
•In the heating mode , the indoor fan continues running for approxi-
mately one minute to discharge any residual heat from the electric
heater; even after the operation has shut down.
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
3 1
DC
A
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
1
A

14
E4. Operation
4.10. Adjusting vertical airflow direction
The vertical air vane helps select the vertical direction of the airflow.
1Press button to select the vertical airflow direction.
•Each time you press the button, the option changes are displayed on
the remote controller, as shown below.
ASwing
↓
BHorizontal airflow 30°
↓
CDownward airflow at an angle of 45°
↓
DDownward airflow at an angle of 55°
↓
EDownward airflow at an angle of 70°
•Immediately after the power-on sequence, the unit is automatically
provided with the initial settings listed below.
In the cooling/drying modes: Horizontal airflow
In the heating mode: Downward airflow (70°)
•When you have selected gentle or cooling mode, or you have entered
the drying mode,the available options change in the following order :
A→B→D→E→A
•One hour after you have selected Dor E, the airflow automatically
changes to Aand the display F“1HR”appears.
•Do not use Dor Etoo often with the Low airflow option in the cooling
and drying modes or condensation can occur.
4.11. Vertical airflow adjustment
Setting this to “Swing”moves the automated vane back and forth within
the swing range, so that the air is directed upwards and downwards.
In the SWING mode, the remote controller displays a moving arrow as
shown in the diagram to indicate the swinging automated vane.
The arrow motion on the remote controller display and the actual auto-
mated vane movement do not match with each other.
In the COOL or FAN mode operation, the vane is set in the ‘fluctuating’
mode, varying airflow rate automatically.
When you set OFF the LOUVER switch, the automated vane will return to
the position before the SWING mode has been selected.
When you toggle the MODE SELECT buttons between COOL, DRY and
FAN with the LOUVER switch set OFF, the airflow is set to approx. 30
degrees-horizontal blowing in the COOL or electronics DRY mode while
to approx. 70 degrees-downward blowing in the FAN mode.
AHorizontal air outlet
BDownward air outlet
CSwing range <30 degrees to 70 degrees>
ABCDE
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
F
1
→
B
A
C
70˚
30˚

15
E5. Tips for best results
Keep the filters clean
Dirty or clogged filters reduce the flow of air, making the unit less efficient.
Very dirty filters may even cause damage to the unit. Remove and clean
the filters at least once a week (more often, in very dusty locations). Using
a vacuum cleaner is an ideal way to clean the filters.
Let fresh air into the room from time to time
Open the windows and ventilate the room now and then, otherwise the
room will become musty.
Eliminate heat sources
When cooling the room, draw the curtains to keep out direct sunlight. Keep
doors and windows fully closed, and avoid opening doors more often than
necessary.
Do not over-cool
The air-conditioner works most efficiently when cooling the room to a tem-
perature within 5˚C of the outdoor temperature.
In COOL mode, for every 1˚C you increase the desired temperature set-
ting, you will save about 10% on electricity costs.
Caution:
•Always turn off the power, first on the remote controller and then
the main switch, before cleaning or servicing the unit.
•When installing or removing the filter or front panel, do not stand
on an unsteady surface. You may fall and injure yourself. Be also
careful not to let dust fall into your eyes.
6.1. Cleaning the filters and the indoor unit
Dirty or clogged filters block the airflow and reduce efficiency. Very dirty
filters can damage the air-conditioner itself.
Filter removal
■PLP-2.5KC
1Pull the knob on the intake grille in the direction indicated by the
arrow and it should open.
2Open the intake grille.
3Release the knob on the center edge of the intake grille and pull
the filter forward to remove the filter.
AKnob
BGrille
CIntake grille
DFilter
■PLP-2.5KB
1Pressing the PUSH button on the outer side of the intake grille
causes the intake grille to open automatically.
2A filter with an intake grille on it can be removed by pulling the
filter forward.
AKnob
BGrille
CIntake grille
DFilter
6. Care and cleaning
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;
;
;
;
;
;
;;
;
;
;
;;
;
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;
;
;
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E
■PLP-2.5KC
■PLP-2.5KB
B
C
A
D
A1
2
D
C
B

16
E6. Care and cleaning
6.1. Cleaning the filters and the indoor unit
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.
Cleaning the indoor unit
•Wipe the outside of the unit with a clean, dry, soft cloth.
•Clean off any oil stains or finger marks using a neutral household de-
tergent (such as dishwashing liquid or laundry detergent).
Caution:
Never use gasoline, benzene, thinner, scouring powder or any type
of non-neutral detergent, as these substances may damage the unit’s
case.
6.2. Care and cleaning
Clean the filter
When the A“FILTER”indicator blinks on the remote controller to alert you
to the necessity of cleaning of the filter.
∗As a guideline for typical office environment, the long-life filter must be
cleaned every 2,500 operating hours.
Reset the FILTER indicator
1Press the FILTER button twice after cleaning.
sWhen you press the FILTER button twice, the ‘FILTER’indicator
Awill be turned off and reset.
sThe FILTER indicator provides you with a guideline for the neces-
sity of filter cleaning based on total operating hours in typical
indoor air conditions. Depending on different operating environ-
ments, more or less frequent cleaning may be necessary.
ON/OFF–
STANDBY
DEFROST
CENTRALLYCONTROLLED
˚C
CLOCK
ONOFF
˚C
1Hr.
NOTAVAILABLE
CHECKMODE
FILTER
CHECK
TESTRUN
ON OFFCLOCK
FILTER
CHECK
TEST RUN
REMOTE CONTROLLER
PAR-JH240KA
TEMP. TIMER SET
ON/OFF –
STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF ˚C
1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
A
1

17
E6. Care and cleaning
6.3. End-of-season
ss
ss
sPress POWER ON/OFF to turn the unit off.
ss
ss
sTurn off the main power switch.
ss
ss
sClean the filters and the indoor unit thoroughly.
ss
ss
sClean the outdoor unit and place a protective cover over it to keep
out dirt and rubbish.
6.4. Pre-season checks
ss
ss
sRemove the protective cover from the outdoor unit.
ss
ss
sCheck that the outdoor unit is properly installed.
ss
ss
sCheck that the outdoor unit’s ground wire is properly attached.
ss
ss
sCheck that the intakes and outlets on both the indoor and out-
door units are free of any obstruction.
ss
ss
sCheck that the drain hose is not blocked, that there are no kinks
in it, and that it is correctly installed.
ss
ss
sCheck that the filters are installed in the indoor unit. Operating
the air-conditioner without filters can damage it.
Caution:
The first time you use the air-conditioner after a long break (e.g. the
first hot day of summer), turn on the main power at least twelve hours
before you turn on the unit using the POWER ON/OFF button. This
will assist trouble-free operation.
;;;;;
;;;;;
;;;;;
ON/OFF–
STANDBY
DEFROST
CENTRALLYCONTROLLED
˚C
CLOCK
ONOFF
˚C
1Hr.
NOTAVAILABLE
CHECKMODE
FILTER
CHECK
TESTRUN

18
E7. Troubleshooting
NOTE: After a power cut, the unit will not restart automatically. You will have to restart it by pressing the POWER - ON/OFF button on the
remote controller.
If none of the above apply, turn the main switch off and contact the dealer from whom you bought the air-conditioner, telling him the model name and the
nature of the problem. Do not try to fix the unit yourself.
In any of the following cases, turn off the main power switch and contact your local dealer for service:
• “CHECK” followed by “P1”, “P2”, “P3”, “P4”, “P5”, “P7” or “CENTRALLY CONTROLLED” is displayed on the control panel.
• The switches do not work properly.
• The circuit breaker trips frequently (or the fuse blows frequently).
• Water has accidentally been splashed into the unit.
• Water leaks from the unit.
• Something is accidentally dropped into the air-conditioner.
• An unusual noise is heard during operation.
The following do not indicate any malfunction:
Odours: smells such as tobacco or cosmetic odours may persist after they have been sucked into the unit.
Sound of liquid flowing inside indoor unit: this can occur during or after operation and is simply the sound of refrigerant being circulated inside the unit.
Ticking sound coming from indoor unit: this can occur when cooling or heating has just begun or has just stopped. It is caused by the indoor unit shrinking
or expanding slightly due to the change in temperature.
The message “CENTRALLY CONTROLLED” appearing on the LCD panel: from time to time, this message may come up on the LCD panel. This does
not indicate any malfunction.
Warning:
If the air conditioner operates but does not cool or heat (depending on model) the room, consult your dealer since there may be a refrigerant
leak. Be sure to ask the service representative whether there is refrigerant leakage or not when repairs are carried out.
The refrigerant charged in the air conditioner is safe. Refrigerant normally does not leak, however, if refrigerant gas leaks indoors, and comes
into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated.
Problem
Unit will not start.
Unit discharges air well, but fails to
cool or heat the room well.
Unit does not start immediately.
Unit stops soon after starting.
Cause
Main power switch is turned off.
Main power fuse has blown.
Outdoor unit’s ground fault breaker is
open.
A power cut has occurred (see NOTE
below).
Improper temperature setting - e.g.
you have selected COOL mode, but
the desired temperature setting is
higher than the current room tem-
perature.
Filters are clogged.
Outdoor unit’s intake or outlet is ob-
structed.
A door or window has been left open.
Unit is waiting three minutes before
restarting.
Indoor or outdoor unit’s intake or out-
let is obstructed.
Filters are clogged.
Solution
Turn main power on. Then press
the POWER ON/OFF button to turn
the unit on.
Replace the fuse.
Reset the ground fault breaker.
Wait until power is restored, then
press the POWER ON/OFF button
to turn the unit on.
Check the set temperature on the re-
mote controller and the actual intake
air temperature. Use the COOLER
and WARMER buttons to set the tem-
perature as described in “Selecting
a temperature” on page 10.
Clean the filter and resume opera-
tion. See “Cleaning the filters and
the indoor unit” on page 15.
Remove the obstruction.
Shut door or window.
Wait until the unit restarts automati-
cally. The compressor may hesitate
resuming because a three-minute
resume prevention circuit is incor-
porated in the outdoor unit for pro-
tection of the compressor.
Remove obstruction and restart the
unit.
Remove the obstruction. Clean the
filter and resume operation. See
“Cleaning the filters and the indoor
unit” on page 15.
Display reading
Pilot lamp does not turn on even
when the POWER ON/OFF button
is pressed.
Remote controller shows that the unit
is operating.
Remote controller shows that the unit
is operating.
Remote controller check display
reads “CHECK P6” or “CHECK P8”.
Before you call out a repair man, check the following table to see whether there is a simple solution to your problem.

19
E
Item Model
W
Cooling*2 capacity BTU/h
Total input kW
W
Heating*3 capacity BTU/h
Total input kW
Model name
Power supply*1
Air flow (Lo-Hi) CMM
Fan Noise level (Lo-Hi) dB (A)
Motor output kW
Booster heater kW
Dimensions (H ×W ×D) mm
Weight kg
Dimensions (H ×W ×D) mm
Weight kg
Model name
Power supply*1
Fan Air flow CMM
Motor output kW
Compressor motor output kW
Crankcase heater W
Dimensions (H ×W ×D) mm
Weight kg
Noise level dB (A)
Performance *4
Indoor unit
Grille
Outdoor unit
Notes: *1 Refer to the product nameplate attached to the unit for the electrical specifications.
*2 Rating conditions (cooling) Indoor : 27°C DB, 19°C WB Outdoor : 35°C DB
*3 Rating conditions (heating) Indoor : 21°C DB Outdoor : 7°C DB, 6°C WB
*4 These data based on indicated voltage. 1ph, 240V
*5 Specifications subject to change without notice.
Operating range
Indoor air intake temperature Outdoor air intake temperature
Cooling Maximum 35°C DB, 22.5°C WB 46°C DB
Minimum 21°C DB, 15.5°C WB –5°C DB
Heating Maximum 27°C DB 21°C DB, 15.5°C WB
Minimum 20°C DB –8.5°C DB, –9.5°C WB
Units should be installed by licensed electric contractor accordingly to local code requirement.
PLH-2KKC
5350
18300
2.32
6000
20500
2.29
PLH-2KKC
~ (1ph), 240V, 50Hz
13 - 16
32 - 37
0.030
–
253 ×660 ×660
19
30 ×760 ×760
3.7
PUH-2AKA
~ (1ph)
240V
50Hz
45
0.065
1.7
38
650 ×870 ×295
64
49
PLH-2.5KKC
6200
21200
2.54
6900
23500
2.30
PLH-2.5KKC
~ (1ph), 240V, 50Hz
14 - 17
35 - 39.5
0.030
–
253 ×660 ×660
20
30 ×760 ×760
3.7
PUH-2.5AKA
~ (1ph)
240V
50Hz
50
0.085
2.0
38
850 ×870 ×295
68
52
8. Specifications

Printed in Japan
BG79S987H02
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN