Mitsubishi Electronics PDFY-NMU-A, PFFY-NRMU-A, PFFY-NEMU-A User Manual

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Air-Conditioners For Building Application INDOOR UNIT

PDFY-NMU-A

PFFY-NEMU-A

PFFY-NRMU-A

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.

F GB

Mitsubishi Electronics PDFY-NMU-A, PFFY-NRMU-A, PFFY-NEMU-A User Manual

GB

F

Remote controller-Button Touche Commande à distance

GB

F

Remote controller-Display Affichage Commande à distance

1

2

B

 

3

A

 

0

C

4 5 6 8 7 9

1[Room temperature adjustment] Button

2[Timer/continuous] Button

3[Selecting operation] Button

4[Time selection] Button [Time-setting] Button

5[Louver] Button

6[Fan speed adjustment] Button

7[Up/down airflow direction] Button

8[Ventilation] Button

9[Checking/built-in] Button

0[Test run] Button

A[Filter] Button

B[ON/OFF] Button

CPosition of built-in room temperature

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.

1Touche de [réglage de la température de la pièce]

2Touche de [fonctionnement continu/minuterie]

3Touche de [sélection du mode de fonctionnement]

4Touche de [sélection de l’heure] Touche de [réglage de l’heure]

5Touche de [pivotement]

6Touche de [réglage de la vitesse du ventilateur]

7Touche de [sens de la soufflerie vers le haut/vers le bas]

8Touche [Ventilation]

9Touche [Vérification/Intégré]

0Touche [Essai de fonctionnement]

ATouche de [filtre]

BTouche [ON/OFF]

CPosition du capteur intégré de la température de la pièce

Ne jamais laisser la commande à distance en plein soleil sinon les données de température ambiante risquent d’être erronées.

Ne jamais placer d’obstacle devant la partie inférieure droite de la commande à distance sinon la lecture des températures ne sera pas correcte.

D CB A U T Q S

 

R

 

P

E

O

F

N

 

 

M

G H

I KLJ

ACurrent time/Timer

BCentralized control

CTimer ON

DAbnormality occurs

EOperation mode: COOL, DRY, AUTO, FAN, HEAT

FPreparing for Heating mode

GDefrost mode

HSet temperature

IPower ON

JLouver

KNot available function

LVentilation

MFunction setting mode

NTest run mode

OError check mode

PFilter sign

QSet effective for 1 hr.

RSensor position

SRoom temperature

TAirflow

UFan speed

AHeure/Programmateur

BContrôle centralisé

CProgrammateur activé (ON)

DEn cas d’anomalie

EMode de fonctionnement: COOL (REFROIDDISSEMENT), DRY (DÉSHUMIDIFICATION),

AUTO (AUTOMATIQUE), FAN (SOUFFLERIE), HEAT (CHAUF-

FAGE)

FPréparation pour le mode chauffage

GMode dégivrage

HRéglage de la température

IMise sous tension (ON)

JLucarne

KFonction non disponible

LVentilation

MMode de réglage du fonctionnement

NMode d’essai de fonctionnement

OMode de vérification des erreurs

PSigne du filtre

QRéglage après une heure

RPosition du capteur

STempérature de la pièce

TFlux d’air

UVitesse du ventilateur

2

[Fig. A]

<PDFY-NMU-A>

A: Filter

: Air Flow

Filtre

Flux d’air

A

21

In case of rear inlet

<PFFY-NEMU-A, NRMU-A>

A: Filter

: Air Flow

Filtre

Flux d’air

A

3

GB

Contents

1.

Safety precautions ......................................................................................

4

 

1.1.

Installation .................................................................................

4

 

1.2.

During operation ........................................................................

4

 

1.3. Disposing of the unit ..................................................................

5

2.

Names and functions of various parts ........................................................

5

3.

How to operate ...........................................................................................

5

 

3.1.

ON/OFF .....................................................................................

5

 

3.2.

Selecting operation ....................................................................

5

 

3.3.

Room temperature adjustment ..................................................

6

 

3.4.

Fan speed adjustment ...............................................................

6

 

3.5. Adjustment of up/down airflow direction ....................................

6

 

3.6.

Time setting ...............................................................................

6

 

3.7.

Timer setting ..............................................................................

7

 

3.8.

Others ........................................................................................

7

4.

The smart way to use .................................................................................

7

5.

Caring for the machine ...............................................................................

7

6.

Troubleshooting ...........................................................................................

8

7.

Installation, transferring works, and checking .............................................

8

8.

Specifications ..............................................................................................

9

1. Safety precautions

s Before operating the unit, make sure you read all the “Safety

2) Indoor unit

precautions”.

Warning:

s “Safety precautions” lists important points about safety.

The indoor unit should be securely installed. If the unit is loosely mounted, it

Please be sure to follow them.

may fall, causing injury.

 

 

Symbols used in the text

Warning:

Describes precautions that should be observed 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 affixed to the main unit.

1.1. Installation

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.

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 fire 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 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.

The appliance is not intended for use by young children or infirm 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.

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.

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.

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 specified.

Keep the electric parts away from water (washing water etc.).

- It might result in electric shock, catching fire or smoke.

When washing the Heat Exchanger and Drain Pan, ensure the Control Box, Motor and LEV remain dry, using a water proof covering.

Never drain the washing water for the Drain Pan and the Heat Exchanger using the Drain Pump Drain separately.

6) Grounding

Caution:

The unit must be properly grounded. Never connect the grounding 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.

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 fire 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 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.

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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 highvoltage parts.

Never insert fingers, 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 fire 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 5 °C [9 °F] 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.

In case of failure

Warning:

Never remodel the air conditioner. Consult your dealer for any repair service. Improper repair work can result in water leakage, electric shock, fire, 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 fire or failure.

If the power breaker is frequently activated, get in touch with your dealer. Leaving it as it is can result in fire 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 deficiency.

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, several watts or several tens of watts will be wasted. Also, the accumulation of dust, etc., can result in fire.

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 (fluorocarbon 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

Attachment and detachment of filter

Caution:

• In removing the filter, precautions must be taken to protect your eyes [Fig. A] (P.3) from dust. Also, if you have to climb up on a stool to do the job, be careful

not to fall.

• Turn off the power supply when the filter is changed.

3. How to operate

A

3.1. ON/OFF

 

Start an operation

C

1.

Press the B [ON/OFF] button

 

 

Operation lamp V lights up and operation starts.

E

Stop an operation

 

1.

Press the B [ON/OFF] button again

Operation lamp goes off and operation stops.

1

B

Once the buttons have been set, pressing of the [ON/OFF] button only can

3

 

 

repeat the same operation thereafter.

 

 

 

2

 

During operation, the operation lamp above the [ON/OFF] button lights up.

 

 

 

 

 

Caution:

 

 

Even if the operation button is pressed immediately after the operation is

 

 

once stopped, operation is not restarted for about 3 minutes. This function

4

6 87

protects the machine. It automatically starts operation after the lapse of ap-

 

 

proximately 3 minutes.

Before starting operation

Start running after the “H0” display has disappeared. The “H0” display briefly appears on the room temperature display (max. 3 minutes) when the power is turned on and after a power failure. This does not indicate any failure of the air conditioner.

The operation modes of the indoor units’ cooling operation, dry operation, and heating operation are different from those of the outdoor units.

When the operation is started with cooling/dry (heating) and other indoor units connected to the counterpart outdoor units are already running in the same operation mode, the remote control displays “COOL” or “DRY” (“HEAT”) mode. However, the operation comes to stop, and you cannot get a desired mode. When this occurs, you will be notified by the “COOL” or “DRY” (“HEAT”) display that flashes in the liquid crystal display of the remote controller. Set to the operation mode of other indoor unit by the operation switch button.

The above does not apply to the models that simultaneously run both the cooling operation and heating operation.

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. Selecting operation

When selecting operation

1.Press the 3 [selecting operation] button

Consecutive press of the selecting operation button switches the operation over to E “COOL” “DRY” “FAN” (“AUTO”), and (“HEAT”). For the contents of operation, check the display.

For cooling

Press the 3 [selecting operation] button and bring up the “COOL” display.

For dry

Press the 3 [selecting operation] button and bring up the “DRY” display.

The indoor fan turns to the low-speed operation, disabling the change of fan speed.

Dry operation cannot be carried out at a room temperature of less than 18 °C [65 °F].

5

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A

C

E

1

B

3

2

46 87

For fan

Press the 3 [selecting operation] button and bring up the “FAN” display.

The fan operation functions to circulate the air in the room.

The temperature of the room cannot be set by fan operation.

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.

Dry operation

The dry is a microcomputer-controlled dehumidifying operation which controls excessive air-cooling according to the room temperature of your choice. (Not usable for heating.)

1.Until reaching room temperature of your choice

The compressor and indoor fan function is linked motion according to the change of the room temperature and automatically repeat ON/OFF.

2.When reaching room temperature of your choice Both the compressor and indoor fan stop.

When stop continues for 10 minutes, the compressor and indoor fan are operated for 3 minutes to keep the humidity low.

For heating

Press the 3 [selecting operation] button to bring up the “HEAT” display.

Regarding displays during heating operation “DEFROST”

Displayed only during the defrosting operation.

“STAND BY”

Displayed from the start of heating operation until the moment warm air blows out.

Caution:

When the air conditioner is used together with burners, thoroughly ventilate the area. Insufficient ventilation can result in accidents due to oxygen deficiency.

Never place a burner at a place where it is exposed to the airflow 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 airflow/weak airflow/set airflow according to the temperature rise of the blown out air. Wait a moment until the airflow comes out naturally.

The fan is not moving at the set speed.

-In some models, the system switches over to faint airflow 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 flows 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.

3.3. Room temperature adjustment

To change room temperature

Press the 1 [room temperature adjustment] button and set the room temperature of your choice.

Pressing or once changes the setting by 1 °C [2 °F].

If the pressing is continued, the setting continues to change by 1 °C [2 °F].

Indoor temperature can be set within the following range.

Cooling/dry: 19

°C [67 °F] – 30 °C [87 °F]

Heating:

17

°C [63 °F] – 28 °C [83 °F]

It is impossible to set the room temperature by the air-blow operation.

*The range of room temperature display is 8 °C [46 °F] - 39 °C [102 °F]. Outside this range, the display flashes either 8 °C [46 °F] - 39 °C [102 °F] to inform you

if the room temperature is lower or higher than the displayed temperature.

3.4. Fan speed adjustment

To change fan speed

Every time you press the 6 [fan speed] button once, it switches from the lowspeed to high-speed settings successively.

In the electronics dry operation, the indoor fan automatically turns to low-speed operation. Switching of fan speed is impossible. (Only the display on the remote controller changes.)

*Every time the fan speed adjustment button is once pressed, the fan speed is changed.

[PDFY-40 48NMU-A, PFFY-NEMU-A, PFFY-NRMU-A]

Fan speed : 2 stages

Display:

(Low)→

(High)

 

 

[PDFY-10-32NMU-A]

 

 

 

Fan speed : 4 stages

 

 

 

Display:

(Low)→

(Mid2)→

(Mid1)→

(High)

3.5. Adjustment of up/down airflow direction

To change the up/down airflow direction

PFFY-NEMU-A

While pulling the blowout grill out toward you, raise the rear, remove it, change the direction, and set it in place.

Caution:

Avoid putting your hand into the air outlet of the indoor unit any more than necessary during operation. If you get your hands caught in the metal parts when adjusting the airflow-direction-adjustment board and blowout grill, or nip them in the autovane, there is a risk of injury and failure.

3.6. Time setting

Set the current time after turning ON the power of the air conditioner or after restoration from a power failure.

It can be set regardless of the operation of the indoor unit.

During the time operation, the time-setting button becomes void, disabling time setting.

1.Press the 4 [time selection] button and bring up the A “current time” display

Every time it is pressed, the display changes.

 

 

“current

AUTO

 

“timer start

AUTO

“timer end

 

CLOCK

time”

 

ON

time”

OFF

 

time”

(no display)

 

 

 

 

 

 

 

 

 

 

 

 

 

Caution:

When the current time is not yet set, the “CLOCK (current time)” display flashes, disabling the setting of timer operation.

2. Set the current time by pressing the 4 or button

• The time cannot be set while the C “” is displayed.

• While the A“CLOCK” time is displayed, press the time setting 4/ buttons and set the time.

• The setting advances one minute every time the 4 button is pressed once, and retrogresses one minute every time the 4 button is pressed once.

When respective 4 / buttons are pressed continuously, the time display goes fast forward. It advances in the order of 1 minute unit - 10 minute unit - one hour unit.

About 10 seconds after the button operation has been completed, the C“current time” and A “CLOCK” displays disappear.

Caution:

Remote controller is equipped with a simplified clock with a precision of about + or - one minute per month.

The time must be readjusted (reset) every time the air conditioner is sub-

jected to a power stop of the air conditioner or a power failure.

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