Operation
Vane·Louver·Vent. (Lossnay) High power Comfort

Press the [RETURN] button to go back to the Operation menu.

Main menu: RETURN Cursor

Reset

1

2

3

4

5

horizontal

Horizontal airflow
Remote controller setting
The airflow direction of this outlet is controlled by the airflow direction setting of remote controller.

Downward
Fixed
The airflow direction of this outlet is fixed in particular direction. * When it is cold because of direct
airflow, the airflow direction can be fixed horizontally to avoid direct airflow.

Electric Component box Outlet No.4

Outlet No.1

Outlet No.3

Outlet No.2

Note: The outlet No. is indicated by the number of grooves on both ends of each air outlet. Set the air direction while checking the information shown on the remote controller display.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Notes: During swing operation, the directional indication on the screen
does not change in sync with the directional vanes on the unit. Available directions depend on the type of unit connected. In the following cases, the actual air direction will differ from the
direction indicated on the remote controller display. 1.While the display is in “STAND BY” or “DEFROST” states. 2. Immediately after starting heat mode (while the system is
waiting for the mode change to take effect). 3. In heat mode, when room temperature is higher than the temperature
setting.

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Air outlet identification marks

9

3. Operation

Manual vane angle (Wired remote controller)

Operation
Vane·Louver·Vent. (Lossnay) High power Comfort

1 Select “Comfort” from the Operation menu, and press the [SELECT/HOLD] button.

Main menu: RETURN Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Comfort
Manual vane angle 3D i-See sensor

Setting display: SELECT Cursor

2 Select “Manual vane angle” with the [F1] or [F2] button, and press the [SELECT/HOLD] button.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Manual vane angle M-NET address 1

Identify unit Check button

Input display: SELECT

Address

Check

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

3 Select the “M-NET address” for the units to whose vanes are to be fixed, with the [F2] or [F3] button, and press the [SELECT/HOLD] button. Press the [F4] button to confirm the unit. The vane of only the target indoor unit is pointing downward.

Manual vane angle

M-NET address

Vane

4-way /2-way

Input display:Angle button

Cur.

Cursor

Angle

4 Select “Vane” with the [F1] button.
Select “4-way” or “2-way” with the [F2] or [F3] button, and press the [F4] button.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Manual vane angle

Select: SELECT Outlet

Angle

5 The current vane setting will appear.
Select the desired outlets from 1 through 4 with the [F1] or [F2] button. · Outlet: “1”, “2”, “3”, “4” and “1, 2, 3, 4, (all outlets)”

F1 F2 F3 F4

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MENU RETURN SELECT HOLD

ON OFF

Press the [F3] or [F4] button to go through the option in the order of “No setting (reset)”, “Step 1”, “Step 2”, “Step 3”, “Step 4”, “Step 5” and

“Draft reduction*”.

Select the desired setting.

Manual vane angle

• Draft reduction

The airflow direction for this setting

Setting

is more horizontal than the airflow direction for the “Step 1” setting in

order to reduce a drafty feeling.

The draft reduction can be set for

only 1 vane.

Note: Do not set the draft reduction in an environment with high humidity. Otherwise, condensation may form and drip.

10

Vane setting
No setting

Step 1

Step 2

Step 3

Step 4

Step 5

Draft reduction*

All outlets

Press the [SELECT/HOLD] button to save the settings. A screen will appear that indicates the setting information is being transmitted. The setting changes will be made to the selected outlet. The screen will automatically return to the one shown above (step 5) when the transmission is completed. Make the settings for other outlets, following the same procedures.

If all outlets are selected,

will be displayed the next time

the unit goes into operation.

Navigating through the screens · To return to the previous screen ………. [RETURN] button

Confirmation procedure
Manual vane angle M-NET address 1

Identify unit Check button

Input display: SELECT

Address

Check

1 Select the “M-NET address” for the units to whose vanes are to be fixed, with the [F2] or [F3] button.
Press the [F4] button to confirm the unit.

F1 F2 F3 F4

Manual vane angle M-NET address
Function setting for unit with vane fully open.
Return: RETURN

F1 F2 F3 MENU RETURN SELECT
HOLD

F4
ON OFF

2 After pressing the [F4] button, wait approximately 15 seconds, and then check the current state of the air conditioner.
The vane is pointing downward. This air conditioner is displayed on the remote controller.
All outlets are closed. Press the [RETURN] button and continue the operation from the beginning.
The messages shown to the left are displayed. The target device does not exist at this refrigerant address. · Press the [RETURN] button to return to the initial screen.

Manual vane angle
No communication Check Unit state. Return: RETURN

3 Change the “M-NET address” to the next number.
· Refer to step 1 to change the “M-NET address” and continue with the confirmation.

F1 F2 F3 F4
Caution: To prevent falls, maintain a stable footing when operating the unit.

3. Operation

Manual vane angle (Wireless remote controller)

1 Going to the Manual vane setting

mode

Press the

button.

(Start this operation from the

status of remote controller

display turned off.)

“FUNCTION” is lighted and “1”

blinks. (Fig. 3-1)

Fig. 3-1

Press the button to select “2”,

and then press the

button.

2 Selecting the vane number (Fig.

3-2)

Press the buttons to select

the vane number A, and then

A press the

button.

Fig. 3-2 Fig. 3-3

3 Setting the vane angle (Fig. 3-3)

Press the buttons to select

the vane angle B.

B Point the wireless remote controller toward the receiver on

the indoor unit, and then press

the

button.

4 Press the

button to

complete the settings.

Display Setting Display Setting

Step 1 Step 5

Step 2 No setting

Step 3

Step 4

No display

Draft reduction*

• The draft reduction can be set for only 1 vane. The setting is enabled only for the last vane that was set.

3.6. 3D i-See sensor setting 3.6.1 3D i-See sensor setting

Main

Main menu

Operation

1 Select “Operation” from the Main menu, and press the [SELECT/ HOLD] button.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Operation Vane·Louver·Vent. (Lossnay) High power Comfort
Main menu: RETURN Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

2 Select “Comfort” from the Operation menu, and press the [SELECT/HOLD] button.

Comfort
Manual vane angle 3D i-See sensor

3 Select “3D i-See sensor” with the [F1] or [F2] button, and press the [SELECT/HOLD] button.

Setting display: SELECT Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

3D i-See sensor Air distribution Energy saving option Seasonal airflow
Setting display: SELECT Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

4 Select the desired menu with the [F1] or [F2] button, and press the [SELECT/HOLD] button.
· Air distribution Select the airflow direction control method when the airflow direction is set to “Auto”.
· Energy saving option Operates the energy-save mode according to whether persons are detected in the room by the 3D i-see Sensor.
· Seasonal airflow When the thermostat turns off, the fan and the vanes operate according to the control settings.

3.6.2 Air distribution
Air distribution M-NET address

Identify unit Check button

Input display: SELECT

Address

Check

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

1 Select the M-NET address for the units to whose vanes are to be fixed, with the [F2] or [F3] button, and press the [SELECT/HOLD] button. Press the [F4] button to confirm the unit. The vane of only the target indoor unit is pointing downward.

Air distribution M-NET address Auto vane
Direct/Indirect Direct/Indirect setting
Select: SELECT Cur.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

2 Select the menu with the [F4] button.
Default Area Direct/Indirect Default…

Default: The vanes move the same as during normal operation. During cooling mode, all of the vanes move to the horizontal airflow direction. During heating mode, all of the vanes move to the down airflow direction.

Area: The vanes move to the

down airflow direction toward

areas with a high floor temperature

during cooling mode and toward

areas with a low floor temperature during heating mode. Otherwise,

en

the vanes move to the horizontal

airflow direction.

Direct/Indirect: The vanes automatically move relative to the areas where persons are detected. The vanes operate as indicated in the following table.

Cooling Heating

Vane setting

Direct

Indirect

horizontal swing

keep horizontal

keep downward

downward horizontal

11

3. Operation

Direct/Indirect setting

Select: SELECT Outlet

: Direct : Indirect : Indirect : Direct
Angle

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

3 When Direct/Indirect is selected, set each air outlet. Select the air outlet with the [F1] or [F2] button, and change the setting with the [F4] button. After changing the settings for all of the air outlets, press the [SELECT/ HOLD] button to save the settings.

• In order to enable this function, the airflow direction must be set to “Auto”.

i-See button (Wireless remote controller)

1 Each time

is pressed during operation, the setting changes in

the following order: OFF Direct Indirect.

Display Setting

OFF

Direct

Indirect

When the setting is changed from OFF to Direct or Indirect, the vane setting changes to “Auto”. This setting is applied collectively to all of the vanes.

3.6.3 Energy saving option
Energy saving option No occupancy energy save Room occupancy energy save No occupancy Auto-OFF
Setting display: SELECT Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

1 Select the desired menu with the [F1] or [F2] button. No occupancy energy save If there are no persons in the room for 60 minutes or more, energysaving operation equal to 2 °C, 4 °F is performed. Room occupancy energy save If the occupancy rate decreases to approximately 30% of the maximum occupancy rate, energysaving operation equal to 1 °C, 2 °F is performed. No occupancy Auto-OFF If there are no persons in the room for the set amount of time (60­180 minutes), the operation is automatically stopped.

Energy saving option Room occupancy energy save
Cooling/Heating
Select: SELECT

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Energy saving option No occupancy Auto-OFF
120 min.
Select: SELECT Time

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

18:47 Thu
Shut down by No Occupancy Auto-OFF
31/Dec 12:59

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

OFF: The function is disabled. Cooling only: The function is enabled only during cooling mode. Heating only: The function is enabled only during heating mode. Cooling/Heating: The function is enabled during both cooling mode and heating mode.
3 When No occupancy Auto-OFF is selected Set the time with the [F3] or [F4] button.
: The setting is disabled (the operation will not stop automatically). 60 ­ 180: The time can be set in 10-minute increments.
4 The message at left will appear if the operation was stopped automatically by the No occupancy Auto-OFF setting.

en

Energy saving option No occupancy energy save
Cooling/Heating
Select: SELECT

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

2 When No occupancy energy save or Room occupancy energy save is selected Select the setting with the [F4] button. OFF Cooling only Heating only Cooling/Heating OFF… After changing the setting, press the [SELECT/HOLD] button to save the setting.

12

3. Operation

3.6.4 Seasonal airflow function

Seasonal airflow

1 Select the setting with the [F4] button.

SeasoSneaal saoirnflaolwairflow

OFF Cooling only Heating

Cooling/Heating

only Cooling/Heating OFF…

Select: SELECT

After changing the setting, press the [SELECT/HOLD] button to save the setting.

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

OFF: The function is disabled. Cooling only: When the thermostat turns off during cooling mode, the vanes move up and down. Heating only: When the thermostat turns off during heating mode, the vanes move to the horizontal airflow direction to circulate the air. Cooling/Heating: The function is enabled during both cooling mode and heating mode. * In order to enable this function, the airflow direction must be set to “Auto”.

Notes: Any person at the following places cannot be detected.
Along the wall on which the air conditioner is installed Directly under the air conditioner Where any obstacle, such as furniture, is between the person and
the air conditioner A person may not be detected in the following situations. Room temperature is high. A person wears heavy clothes and his/her skin is not exposed. A heating element of which temperature changes significantly is present. Some heat sources, such as a small child or pet, may not be sensed. A heat source does not move for a long time. The 3D i-See sensor operates once approximately every 3 minutes to measure the floor temperature and detect persons in the room. The intermittent operating sound is a normal sound produced when
the 3D i-See sensor is moving. When 1 MA Remote Controller is used to control multiple indoor
units, No occupancy Auto-OFF cannot be used.

Notes: During swing operation, the directional indication on the screen
does not change in sync with the directional vanes on the unit. Available directions depend on the type of unit connected. In the following cases, the actual air direction will differ from the
direction indicated on the remote controller display. 1. While the display is in “STAND BY” or “DEFROST” states. 2. Immediately after starting heat mode (while the system is wait-
ing for the mode change to take effect). 3. In heat mode, when room temperature is higher than the tem-
perature setting.
3.7. Ventilation
For LOSSNAY combination
The following 2 patterns of operation is available.
· Run the ventilator together with indoor unit. · Run the ventilator independently.
Notes: (for wireless remote controller) Running the ventilator independently is not available. No indication on the remote controller.

3.8. Mode Selection (For Simple MA remote controller)
Pressing the MODE button will change the operation mode in the following order.

*1 COOL

*1 DRYING

FAN

1, 2 AUTO

*1 SETBACK

*1 HEAT

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/DRYING and HEAT modes.

During operation in AUTO (dual set point) mode

Preset temp. (COOL)

The room temperature changes corresponding to the change in the outside temperature.

Preset temp. (HEAT)

Room temperature

HEAT

COOL

HEAT

COOL

en
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.

Preset temp. (COOL)

During operation in SETBACK mode

The room temperature changes corresponding to the change in the outside temperature.

Room temperature

Preset temp. (HEAT)

HEAT

COOL

HEAT

COOL

13

3. Operation

3.9. Temperature setting (For Simple MA remote controller)

In COOL, DRYING, HEAT, and AUTO (single set point) modes
Pressing the TEMP. button increases the preset temperature. Pressing the TEMP. button decreases the preset temperature.

In AUTO (dual set point) and SETBACK modes Cooling preset temperature

Room Set to

Current preset temperature (cooling/heating) appears. * The example shows the display in AUTO (dual set point) mode.

AUTO COOLHEATFAN DRYING VENTI. SETBACK

When the TEMP. or TEMP. button is pressed, the preset temperature (cooling/heating) display blinks.

Heating preset temperature Current operation mode

Room Set to AUTO COOLHEATFAN DRYING VENTI. SETBACK

While the preset temperature (cooling/heating) display blinks, pressing the TEMP. button increases the preset temperatures for both
cooling and heating, and pressing the TEMP. button decreases the preset temperatures for both cooling and heating. When the MODE button is pressed, only the cooling preset temperature display blinks.

Room Set to AUTO COOLHEATFAN DRYING VENTI. SETBACK

While the cooling preset temperature display blinks, pressing the TEMP. button increases the cooling preset temperature, and pressing the TEMP. button decreases the cooling preset temperature. When the MODE button is pressed, only the heating preset temperature display blinks.

Room Set to AUTO COOLHEATFAN DRYING VENTI. SETBACK

While the heating preset temperature display blinks, pressing the TEMP. the TEMP. button decreases the heating preset temperature.
Pressing the MODE button completes the preset temperature setting.

button increases the heating preset temperature, and pressing

• During the preset temperature setting, the setting will automatically turn off if the TEMP. or TEMP. button is left untouched for a certain period of time.

en 14

3. Operation

Preset temperature range is as follows.

Operation mode COOL/DRYING HEAT AUTO (single set point) AUTO (dual set point)

Preset temperature range 67 – 87 (95)°F/19 – 30 (35)°C 63 (40) – 83°F/17 (5) – 28°C 67 – 83°F/19 – 28°C [COOL] Preset temperature range for COOL mode.

SETBACK

[HEAT] Preset temperature range for HEAT mode. 1, 2 [COOL] Preset temperature range for COOL mode.

FAN, VENTI.

[HEAT] Preset temperature range for HEAT mode. *2 Unsettable

1 The preset temperatures for cooling and heating for AUTO (dual set point) mode will be used for those for COOL/DRYING and HEAT mode. 2 The preset temperatures for cooling and heating can be set under the following conditions.
· The cooling preset temperature is greater than the heating preset temperature. · The difference between the cooling and heating preset temperatures is equal or greater than the minimum temperature difference that varies depending on the
indoor unit model to be connected.

3.10. Fan speed setting (For Simple MA remote controller)
Pressing the FAN button will change the fan speed in the following order.

AUTO

• The settable fan speed varies depending on the indoor unit model to be connected. * If the unit has no fan setting function, the fan speed cannot be set.
  In this case, the fan icon blinks when the FAN button is pressed.
  3.11. Vane setting (For Simple MA remote controller)
  Pressing the VANE button will switch the vane directions.

AUTO Setting 1 Setting 2 Setting 3 Setting 4 Setting 5 Swing

• The settable vane direction varies depending on the indoor unit model to be connected. * If the unit has no vane function, the vane direction cannot be set.
  In this case, the vane icon blinks when the VANE button is pressed.

en 15

3. Operation
3.12. Temperature range restriction (For Simple MA remote controller)
The preset temperature range for each operation mode can be restricted.
The air conditioning unit stops.

(1) ON/OFF

(2) FAN (Press the button for three seconds or longer.)

(6) FAN (Press the button for three seconds or longer.)

A. No temperature range restriction
Room Set to

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(3) MODE

(3) MODE

Upper limit Room Set to

B. Temperature range restriction for COOL/DRYING mode

(5) TEMP. /

Lower limit Room Set to

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(4) FAN

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(3) MODE

Upper limit Room Set to

C. Temperature range restriction for HEAT mode

(5) TEMP. /

Lower limit Room Set to

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(4) FAN

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(3) MODE

Upper limit Room Set to

D. Temperature range restriction for AUTO (single set point) mode

(5) TEMP. /

Lower limit Room Set to

AUTO COOLHEATFAN DRYING VENTI. SETBACK

(4) FAN

AUTO COOLHEATFAN DRYING VENTI. SETBACK

Press the ON/OFF button to stop the air conditioning unit. Press and hold the FAN button for three seconds or longer to bring up the temperature range restriction setting display. (A or B appears.) Press the MODE button to select from A through D. * When the AUTO (single set point) mode is not available on the indoor unit, or when the AUTO mode is set to OFF in the Mode skip setting, D will not be displayed.
A. No temperature range restriction: The temperature range restriction will not be executed for all modes.
B. Temperature range restriction for COOL/DRYING mode: The preset temperature range for COOL/DRYING, AUTO (dual set point), and SETBACK mode can be changed.
C. Temperature range restriction for HEAT mode: The preset temperature range for HEAT, AUTO (dual set point), and SETBACK mode can be changed.
D. Temperature range restriction for AUTO (single set point) mode: The preset temperature range for AUTO (single set point) mode can be changed.
Press the FAN button to switch between the upper limit (Hi) and lower limit (Lo) settings.
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. Weekly timer is not available with the wireless remote controller.

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16

Emergency Operation for Wireless Remote-controller

PLFY-WL·NFMU-E
E B A
DC

When the remote controller cannot be used When the batteries of the remote controller run out or the remote controller malfunctions, the emergency operation can be done using the emergency buttons on the grille.
A DEFROST/STAND BY lamp
B Operation lamp
C Emergency operation cooling switch
D Emergency operation heating switch
E Receiver

Starting operation · To operate the cooling mode, press the button C for more than 2
seconds. · To operate the heating mode, press the button D for more than 2
seconds. · Lighting of the Operation lamp B means the start of operation.

Notes: Details of emergency mode are as shown below.
Details of EMERGENCY MODE are as shown below.

Operation mode

COOL

HEAT

Set temperature Fan speed
Airflow direction

24°C, 75°F High
Horizontal

24°C, 75°F High
Downward 4 (5)

Stopping operation · To stop operation, press the
than 2 seconds.

button C or the

button D for more

6. Care and Cleaning

Filter information

Fri

Room 83

Cool

Set temp. Auto

83

Mode

Temp.

Fan

Main Main menu Maintenance

will appear on the Main display in the Full mode when it is time to clean the filters.
Wash, clean, or replace the filters when this sign appears. Refer to the indoor unit Instructions Manual for details.
Select “Maintenance” from the Main menu, and press the [SELECT/ HOLD] button.

Filter information

Please clean the filter. Press Reset button after
filter cleaning.

Main menu: MENU

Reset

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Filter information Reset filter sign?

Cancel OK

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Maintenance menu Error information Filter information Cleaning
Main menu: RETURN Cursor

F1 F2 F3 F4

MENU RETURN SELECT HOLD

ON OFF

Select “Filter information” from the Maintenance menu, and press the [SELECT/HOLD] button.

Filter information Filter sign reset
Main menu: MENU

Press the [F4] button to reset filter sign. Refer to the indoor unit Instructions Manual for how to clean the filter.
Select “OK” with the [F4] button.
A confirmation screen will appear. en
Navigating through the screens · To go back to the Main menu ………………….. [MENU] button · To return to the previous screen ………………….. [RETURN] button

17

Care and Cleaning

Fri

When the

is displayed on the PLFY-WL·NFMU-E

Main display in the Full mode, the

Room 83 F

system is centrally controlled and

A

B

Cool

Set temp. Auto

83 F

the filter sign cannot be reset.

Mode

Temp.

Fan

If two or more indoor units are connected, filter cleaning timing for each unit may be different, depending on the filter type.

The icon cleaning.

will appear when the filter on the main unit is due for

When the filter sign is reset, the cumulative operation time of all units will be reset.

The icon is scheduled to appear after a certain duration of operation, based on the premise that the indoor units are installed in a space with ordinary air quality. Depending on the air quality, the filter may require more frequent cleaning.

The cumulative time at which filter needs cleaning depends on the model. · This indication is not available for wireless remote controller.

Caution: · Ask authorized people to clean the filter.
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, 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.
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.

C D
1 Slide the levers on the intake grille in the direction indicated by the arrow and it should open.
2 Open the intake grille. 3 Release the knob on the center edge of the intake grille and pull
the filter forward to remove the filter. A Intake grille levers B Grille C Intake grille D Filter
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
detergent (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.

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18

Troubleshooting

Having trouble?

Here is the solution. (Unit is operating normally.)

Air conditioner does not heat or cool well. When cooling or heating operation starts, cool or warm air does not blow from the indoor unit soon.

Clean the filter. (Airflow is reduced when the filter is dirty or clogged.) Check the temperature adjustment and adjust the set temperature. Make sure that there is plenty of space around the outdoor unit. Is the
indoor unit air inlet or outlet blocked?
Has a door or window been left open? Warm or cool air does not blow until the indoor unit has sufficiently
warmed up or cooled down.

During heat 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 cool mode, the vanes automatically move to the horizontal
(down) position after 1 hour when the down (horizontal) airflow up/ down direction is selected. This is to prevent water from forming and dripping from the vanes.
During heat mode, the vanes automatically move to the horizontal
airflow up/down direction when the airflow temperature is low or during defrosting mode.

When the airflow up/down direction is changed, the vanes always move When the airflow up/down direction is changed, the vanes move to the

up and down past the set position before finally stopping at the position.

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 cool mode, water may form and drip from the cool pipes and
joints.
During heat mode, water may form and drip from the heat exchanger. During defrosting mode, water on the heat exchanger evaporates and
water vapor may be emitted.

The air conditioner does not operate even though the ON/OFF button is pressed. The operation mode display on the remote controller disappears.

Is the power switch of the indoor unit turned off? Turn on the power
switch.

” ” appears in the remote controller display.

During central control, ” ” appears in the remote controller display
and air conditioner operation cannot be started or stopped using the 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 three minutes.
(Operation has stopped to protect the air conditioner.)

Air conditioner operates without the ON/OFF button being pressed.

Is the on timer set?
Press the ON/OFF button to stop operation.
Is the air conditioner connected to a central remote controller?
Consult the concerned people who control the air conditioner.
Does ” ” appear in the 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. Remote controller timer operation cannot be set.

Is the off timer set?

Press the ON/OFF button to restart operation.

Is the air conditioner connected to a central remote controller?

Consult the concerned people who control the air conditioner.

Does ” ” appear in the remote controller display?

Consult the concerned people who control the air conditioner.

Are timer settings invalid?

en

If the timer can be set, or appears in the remote controller

display.

“PLEASE WAIT” appears in the remote controller display. An error code appears in the remote controller display.

The initial settings are being performed. Wait approximately 3 minutes. The protection devices have operated to protect the air conditioner. Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be sure to provide the dealer with the model name and information that appeared in the remote controller display.

Draining water or motor rotation sound is heard.

When cooling operation stops, the drain pump operates and then
stops. Wait approximately 3 minutes.

(For PLFY-NFMU) The vanes do not move or the indoor unit does not respond to input from the wireless remote controller.

The junction wire connectors of the vane motor and signal receiver
may not be connected correctly. Have an installer check the connections. (The colors of the male and female sections of the junction wire connectors must match.)

19

7. Troubleshooting

Having trouble? Noise is louder than specifications.
Nothing appears in the wireless remote controller display, the display is faint, or signals are not received by the indoor unit unless the remote controller is close. After battery installation/replacement of remote controller, part of function cannot be used. The operation lamp near the receiver for the wireless remote controller on the indoor unit is flashing. Warm air blows from the indoor unit intermittently when heat mode is off or during fan mode.
The wireless remote controller does not operate (the indoor unit beeps 4 times). The indoor unit which is not operating becomes warm and a sound, similar to water flowing, is heard from the unit.

Here is the solution. (Unit is operating normally.)

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-

Normal rooms Low sound-

absorbing rooms

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

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 (+, ­).
Please check that the clock setting is completed. If clock setting is not
done, please complete.
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.
When another indoor unit is operating in heat mode, the control
valve opens and closes occasionally to maintain stability in the air conditioning system. This operation will stop after a while. * If this will cause an undesirable rise in the room temperature in
small rooms, etc., stop the operation of the indoor unit temporarily.
Switch the auto mode setting to the AUTO (single set point) mode or
AUTO (dual set point) mode. For details, refer to the included Notice (A5 sheet) or the Installation Manual.
A small amount of refrigerant continues to flow into the indoor unit
even though it is not operating.

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.

Specifications

Model Power source (Voltage/Frequency) Capacity (Cooling/Heating) Dimension (Height) Dimension (Width) Dimension (Depth) Net weight Fan Airflow volume (Low-Middle-High) Noise level (Low-Middle-High)

PLFY-WL04NFMU-E PLFY-WL06NFMU-E PLFY-WL08NFMU-E PLFY-WL12NFMU-E PLFY- WL15NFMU-E

<V/Hz>

Single, 208/230V, 60 Hz