Mitsubishi Electric PVFY-P12 NAMU-E, PVFY-P24 NAMU-E, PVFY-P18 NAMU-E, PVFY-P30 NAMU-E, PVFY-P48 NAMU-E Operation Manual
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Air-Conditioners
PVFY-P12, 18, 24, 30, 36, 48, 54 NAMU-E
OPERATION MANUAL
For safe and correct use, please read this operation manual thoroughly before operating the air-conditioner unit.
English
FOR USER
MANUEL D’UTILISATION
Pour une utilisation correcte sans risques, veuillez lire le manuel d’utilisation en entier avant de vous servir du
climatiseur.
Français
POUR L’UTILISATEUR
2
1. Safety precautions
u Before operating the unit, make sure you read all the “Safety
precautions”.
u “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 symbol is
displayed on the main unit label.) <Color: yellow>
: Beware of electric shock. (This symbol is displayed on the main unit label.)
<Color: yellow>
Warning:
Carefully read the labels affi xed to the main unit.
1.1. Installation
u After 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.
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 improperly, water
leakage, electric shock or fi re may result.
• Use only accessories authorized by Mitsubishi Electric and ask your dealer
or an authorized company to install them. If accessories are installed
improperly, water leakage, electric shock or fi re 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 fi re may result. If
you need to have the unit repaired or moved, consult your dealer.
• Keep the electric parts away from water (washing water) etc.
• It might result in electric shock, catching fi re or smoke.
Note1:
When washing the Heat Exchanger and Drain Pan, ensure the
Control Box, Motor and LEV remain dry, using a water proof
covering.
Note2: Never drain the washing water for the Drain Pan and the Heat
Exchanger using the Drain Pump. Drain separately.
• The appliance is not intended for use by young children or infi rm persons
without supervision.
• Young children should be supervised to ensure that they do not play with
the appliance.
• Do not use a leak detection additive.
• Do not use refrigerant other than the type indicated in the manuals
provided with the unit and on the nameplate.
-
Doing so may cause the unit or pipes to burst, or result in explosion or fi re during
use, during repair, or at the time of disposal of the unit.
-
It may also be in violation of applicable laws.
-
MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for mal-
functions or accidents resulting from the use of the wrong type of refrigerant.
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 neighbors.
2) Indoor unit
Warning:
The indoor unit should be securely installed. If the unit is loosely mounted,
it may fall, causing injury.
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 goes away from
the unit. Incorrect installation may result in water leakage, causing damage
to furniture.
5) Power line, fuse or circuit breaker
Warning:
• Make sure that the unit is powered by a dedicated supply. Other appliances
connected to the same supply 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
specifi ed.
6) Grounding
Caution:
• The unit must be properly grounded. Never connect the grounding wire
to a gas pipe, water pipe, lightning conductor or tele phone 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
.
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 damage the
remote controller and cause malfunction.
• Never remove the upper case of the remote controller. It is dangerous
to remove the upper case of the remote controller and touch the printed
circuit boards inside. Doing so can result in fi re and failure.
• Never wipe the remote controller with benzene, thinner, chemical rags,
etc. Doing so can result in discoloration and failure. To remove heavy
stains, soak a cloth in neutral detergent mixed with water, wring it out
thoroughly, wipe the stains off, and wipe again with a dry cloth.
• Never block or cover the indoor or outdoor unit’s intakes or outlets. Tall
Contents
1. Safety precautions ........................................................................................2
1.1. Installation ...................................................................................2
1.2. During operation .........................................................................2
1.3. Disposing of the unit ...................................................................3
2. Names and functions of various parts .......................................................... 3
3. How to operate ............................................................................................. 5
3.1. ON/OFF ......................................................................................5
3.2. Mode Selection ........................................................................... 5
3.3. Temperature Setting ....................................................................7
3.4. Fan speed adjustment.................................................................8
4. The smart way to use ................................................................................... 8
5. Caring for the machine ................................................................................. 8
6. Troubleshooting ............................................................................................9
7. Installation, transferring works, and checking ............................................. 10
8. Specifi cations .............................................................................................10
Note: If you use other remote controllers, refer to either Installation Manual or Initial Setting Manual that comes with the controller to be used.
3
Caution:
• Never expose the remote controller to direct sunlight. Doing so can result in the erroneous measurement of room temperature.
• Never place any obstacle around the lower right-hand section of the remote controller. Doing so can result in the erroneous measurement of room temperature.
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 effi ciency.
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-fl ame appliance where it will
be exposed to the air discharged from the unit. Incomplete combustion
may result.
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 rotating, hot or high-voltage
parts.
• Never insert fi ngers, sticks etc. into the intakes or outlets, otherwise 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 fi re
may result.
• When you notice exceptionally abnormal noise or vibration, stop operation, turn off the power switch, and contact your dealer.
• Do not over-cool. The most suitable inside temperature is one that is
within 9° F of the outside temperature.
• Do not leave handicapped people or infants sitting or standing in the path
of the airfl ow from the air-conditioner. This could cause health problems.
Caution:
• Do not direct the airfl ow 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.
In case of failure
Warning:
•
Do not repair the air conditioner yourself. Consult your dealer for any repair
or service. Improper repair work can result in water leakage, electric shock,
fi re, etc
.
• If the remote controller displays an error indication, the air conditioner
does not run, or there is any abnormality, stop operation and contact your
dealer. Leaving the unit as it is under such conditions can result in fi re
or failure.
• If the power breaker is frequently activated, get in touch with your dealer.
Leaving it as it is can result in fi re or failure.
• If the refrigeration gas blows out or leaks, stop the operation of the air
conditioner, thoroughly ventilate the room, and contact your dealer.
Leaving the unit as it is can result in accidents due to oxygen defi ciency.
When the air conditioner is not to be used for a long
time
• If the air conditioner is not to be used for a long time due to a seasonal
change, etc., run it for 4 - 5 hours with the air blowing until the inside is
completely dry. Failing to do so can result in the growth of unhygienic,
unhealthy mold in scattered areas throughout the room.
• When it is not to be used for an extended time, keep the [power supply]
turned OFF.
If the power supply is kept on, energy will be wasted. Also, the accumu-
lation of dust, etc., can result in fi re.
• Keep the power switched ON for more than 12 hours before starting
operation. Do not turn the power supply OFF during seasons of heavy
use. Doing so can result in failure.
1.3. Disposing of the unit
Warning:
When you need to dispose of the unit, consult your dealer. If pipes are removed
incorrectly, refrigerant (fl uorocarbon gas) may blow out and come into
contact with your skin, causing injury. Releasing refrigerant into the
atmosphere also damages the environment.
2. Names and functions of various parts
Simple MA Remote Controller
• Controller Interface
.
Backlit LCD
TEMP. button (See Page 7.)
MODE button (See Page 5.)
ON/OFF lamp
ON/OFF button (See Page 5.)
FAN button (See Page 8.)
VANE button
* To set the functions that are not available on this controller (PAC-YT53CRAU), use MA remote
controller or the centralized controller.
The lamp will light up in green when
turned on, and blink during startup
and when an error occurs.
Pressing this button starts and
stops the operation.
4
• Display
*2 icon
When an error occurs, power indicator will blink, and unit address (three digits) and error code (four digits) will
blink.
Check the error status, stop the operation, and consult your dealer.
When only error code blinks, air conditioning units stay in operation, but an error may have occurred.
Check the error code, and consult your dealer.
Room
Set to
AUTO COOLHEATFAN
DRYING VENTI. SETBACK
Error code
blinks.
Room
Set to
AUTO COOLHEATFAN
DRYING VENTI. SETBACK
Error code
blinks.
icon appears while the unit is operated in the
energy-save mode
* All icons are displayed for explanation.
icon appears when Operation lock setting is
effective.
icon appears when indoor unit functions are set up.
(Refer to the Installation Manual.)
Fan speed icon
Vane icon
icon appears when the power is on.
Indoor temperature
Operation modes
CENTRAL icon *1
CHECK icon *2
Preset temperature *3
*1 icon
Appears when one of the following local operations is prohibited: ON/OFF; operation mode; preset temperature;
fan speed; vane.
CENTRAL
*3 Preset temperature
* Centigrade or Fahrenheit is selectable. Refer to the Installation Manual for details.
In COOL, HEAT, or
AUTO (single set point) modes
In AUTO (dual set point) or
SETBACK modes
Room
Set to
AUTO COOLHEATFAN
DRYING VENTI. SETBACK
Preset
temperature
Room
Set to
AUTO COOLHEATFAN
DRYING VENTI. SETBACK
Heating preset
temperature
Cooling preset
temperature
5
3. How to operate
Before starting operation
• The choice of indoor unit operation mode is limited by the operation status of the
outdoor unit to which a given indoor unit is connected. If an outdoor unit and some
of the indoor units that are connected to the outdoor units are already operating in
the cooling mode, for example, only the cooling mode is available for the rest of the
units in the same group. If a different mode is requested, the symbol that corresponds
to the requested mode will blink, notifying the user that the mode is currently
unavailable. The same is true for the heating mode. This restriction, however, does
not apply to the models that support a simultaneous cooling/heating function.
• The outdoor units stop when all the indoor units connected to the counterpart
outdoor units stop.
• During heating operation, even if the indoor unit is set to operation while the
outdoor unit is in defrosting operation, operation starts after the defrosting
operation of the outdoor unit has ended.
3.2. Mode Selection
3.1. ON/OFF
Start an operation
1. Press the ON/OFF button
ON/OFF lamp lights up and operation starts.
Stop an operation
1. Press the ON/OFF button again
ON/OFF lamp goes off and operation stops.
• Once the Buttons have been set, pressing of the ON/OFF button only can repeat
the same operation thereafter.
• During operation, the ON/OFF lamp above the ON/OFF button lights up.
Caution:
Even if the ON/OFF Button is pressed immediately after the operation is
once stopped, operation is not restarted for about 3 minutes. This function
protects the machine. It automatically starts operation after the lapse of
approximately 3 minutes.
Pressing the button will change the operation mode in the following order.
*1: Not all functions are available on all models of indoor units. Functions that are not available will not
appear on the display.
*2: The preset temperature for AUTO (either single or dual set point) mode will appear depending on
the indoor unit model.
AUTO (dual set point) mode:
In AUTO (dual set point) mode, the preset temperatures can be set for cooling and heating, and
operation can be switched automatically between cooling and heating depending on the room
temperature.
The preset temperatures for cooling and heating set in AUTO (dual set point) mode will be reflected
to the temperature setting for COOL and HEAT modes.
MODE
COOL HEATAUTOFAN SETBACK
*1 *1 *1*1, *2
During operation in AUTO (dual set point) mode
Preset temp.
(COOL)
Preset temp.
(HEAT)
HEAT
Room
temperature
HEATCOOL COOL
The room temperature
changes corresponding
to the change in the
outside temperature.
6
Caution:
Never expose your body directly to cool air for a long time. Excessive exposure
to cool air is bad for your health, and should therefore be avoided.
• When the air-conditioner is used together with burners, thoroughly ventilate
the area. Insuffi cient ventilation can result in accidents due to oxygen
defi ciency.
• Never place a burner at a place where it is exposed to the airfl ow from the
air-conditioner.
Doing so can result in imperfect combustion of the burner.
• The microcomputer functions in the following cases:
• Air does not blow out when heating starts.
-
To prevent any cool air from escaping, the indoor fan is gradually switched in
sequence from faint airfl ow/weak airfl ow/set airfl ow according to the temperature
rise of the blown out air. Wait a moment until the airfl ow comes out naturally.
• The fan is not moving at the set speed.
- In some models, the system switches over to faint airfl ow when the temperature
of the room reaches the set temperature. In other cases, it stops to prevent any
cool air from escaping during the defrosting operation.
• Air fl ows out even if operation is stopped.
- Approximately 1 minute after the stop of operation, the indoor fan sometimes
rotates to eliminate extra heat generated by the electric heater, etc.
The fan speed comes to low or high.
SETBACK mode:
The SETBACK function automatically switches the operation mode between cooling and heating to
maintain the room temperature within the set temperature range.
The preset temperatures for cooling and heating set in SETBACK mode can be different from the
preset temperatures for other modes.
During operation in SETBACK mode
Preset temp.
(COOL)
Preset temp.
(HEAT)
HEAT
Room
temperature
HEATCOOL COOL
The room temperature
changes corresponding
to the change in the
outside temperature.
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