Mitsubishi Electric PAR-21MAA User manual

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WT04474X01
CITY MULTI Control System
and Mitsubishi Mr. SLIM Air Conditioners
MA Remote Controller
PAR-21MAA
Instruction Book
ON/OFF
TEMP.
Please read these instructions carefully and take care to use this equipment
correctly. Store these instructions safely for future reference.
Be sure to pass these instructions and the corresponding installation instructions
to anyone subsequently appointed to maintain this equipment. Installation and
relocation of this equipment should be carried out by qualified persons only.
Attempts by end users to install or move this equipment may lead to unsafe
conditions or improper operation.
Contents
1. Safety Precautions ........................................................................ 2
2. Parts Names .................................................................................. 4
3. Screen Configuration ..................................................................... 6
4. Setting the Day of the Week and Time .......................................... 6
5. Using the Remote Controller ......................................................... 7
(1) How to Start, Stop, Change the Mode, and Adjust the Temperature .. 7
(2) Fan Speed, Airflow Direction, and Ventilation ................................ 9
(3) Using the Timer ............................................................................ 11
1Using the Weekly Timer .......................................................... 11
2Using the Simple Timer .......................................................... 13
3Using the Auto Off Timer ........................................................ 15
(4) Locking the Remote Controller Buttons
(Operation function limit controller) .............................................. 17
(5) Other Indications .......................................................................... 18
6. Function Selection ....................................................................... 20
7. Specifications .............................................................................. 24

– 2 –
1 Safety Precautions
●Precautions are classified as follows, according to the level of potential danger.
Denotes a condition or operation which, if handled incorrectly, may lead to serious injury or death.
Denotes a condition or operation which, if handled incorrectly, may lead to bodily injury or property damage.
WARNING
CAUTION
WARNING
Do not attempt to install this equipment yourself.
Please have your dealer or a qualified engineer install this equipment.
Improper installation may result in fire, electric shock, or other severe
accident.
Be sure that the equipment has been fastened securely.
Be sure that equipment is securely fastened to a sturdy support so that
there is no risk that it will fall.
Be sure that you are supplying the rated voltage.
Supply of an incorrect voltage may lead to fire or equipment failure.
Turn off this equipment immediately if operation becomes abnormal.
Continued use may lead to equipment failure, electric shock, or fire.
If you notice a burning smell or other abnormality, turn off the power switch
immediately and consult your dealer.
Do not attempt to relocate this equipment yourself.
Improper reinstallation may result in fire, electric shock, or other severe
accident.
Please have your dealer or a qualified engineer carry out relocation.
Do not dispose of this equipment yourself.
Please consult the dealer when it comes time to discard this equipment.
Do not attempt to modify or repair this equipment yourself.
Attempted modification or repair may lead to fire, electric shock, or other
severe accident. Please consult with your dealer if repair is required.
Stop using this equipment if it fails to operate correctly (if error messages
recur and the unit does not run as expected).
Continued use or attempted use of this equipment may lead to fire or
equipment failure. Consult your dealer for advice.

–3 –
Keep hazardous materials away from this equipment.
Do not install this equipment in locations where there is risk of combustible
gas leakage. The presence of combustible gas may result in explosion or
fire.
Do not wash this equipment with water.
Washing with water may result in electric shock or equipment failure.
Do not touch buttons when hands are wet.
Doing so may result in electric shock or equipment failure.
Do not use this equipment for purposes for which it was not intended.
This equipment is for use with Mitsubishi Building Air Control systems.
Please do not use it with any other systems, or for any other purpose, as
such usage may result in improper operation.
Do not spray insect repellant or combustible substances on the
equipment.
Keep combustible sprays and substances away from this equipment, and
never spray them directly onto this equipment. Contact with or proximity to
such substances poses risk of explosion or fire.
Do not use this equipment in improper environments.
Do not use in areas where there may be large quantities of oil (machine oil,
etc.), exhaust gas, or sulfide gas. Such environments may degrade the
performance or cause equipment failure.
CAUTION
Do not use sharp-tipped objects to press the buttons.
Use of sharp tips may lead to electric shock or equipment failure.
Do not use under extreme temperatures.
Use only when ambient temperature is within the limits indicated in the
instructions. (If the instructions do not indicate limits, use only at tempera-
tures between 0 °C and 40 °C.) Use of this equipment at temperatures
outside of this range may result in major equipment failure.
Do not pull or twist the communication cables.
Pulling or twisting a cable may result in fire or equipment failure.
Do not disassemble.
Attempted disassembly may result in injury from contact with internal parts,
or may lead to fire or equipment failure.
Do not wipe this equipment with benzene, paint thinner, or chemical
cleaning cloths.
These substances may cause discoloration or equipment failure. If the
equipment becomes noticeably dirty, clean it with a wrung-out cloth that
has been moistened with water-diluted neutral solvent, and then wipe it
with a dry cloth.

–4 –
2 Parts Names
Display Section
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is sup-
ported.
“CentrallyControlled”indicator
Indicates that operation of the re-
mote controller has been prohib-
ited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the
filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
weak and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow di-
rection also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.

– 5 –
Operation Section
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
door.
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
(Operation button)
To preceding operation
number.
Ventilation button
(Operation button)
To next operation number.
Note:
●If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to drive multiple indoor units, this message will appear only if the feature is not present
at the parent unit.

–6 –
3 Screen Configuration
<Screen Types>
●Function Selection of remote controller:
Set the functions and ranges available to the remote
controller (timer functions, operating restrictions, etc.)
●Set Day/Time: Set the current day of the week or time.
●Standard Control Screens: View and set the air conditioning system’s operating status
●Timer Monitor: View the currently set timer (weekly timer, simple timer,
or Auto Off timer)
●Timer Setup: Set the operation of any of the timers (weekly timer,
simple timer, or Auto Off timer).
˚F˚C
TIMER
MON
OFF
WEEKLY
SUN MON TUE WED THU FRI SAT
WEEKLY
˚F˚C
˚C
TIME SUN
Function Selection of remote controller
Set Day/Time
Standard Control Screens
OFF ON
Timer Monitor Timer Setup
ADC
BC
B
<How to change the screen>
A: Hold down both the Mode button and the Timer On/Off button for 2 seconds.
B: Press the Timer Menu button.
C: Press the Mode (Return) button.
D: Press either of the Set Time buttons ( or ).
4 Setting the Day of the Week and Time
■ Use this screen to change the current day of the week and time setting.
Note:
The day and time will not appear if clock use has been disabled at Function Selection
of remote controller.
Day of the Week &
Time display
˚C
˚C
TIME SUN
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
24
9
1
A
<How to Set the Day of the Week and Time...>
Time Setting
TIME SUN
2
3
4
1. Press the or Set Time button Ato show display 2.
2. Press the Timer On/Off (Set Day) button 9to set the day.
* Each press advances the day shown at 3: Sun →Mon →... →Fri →Sat.
3. Press the appropriate Set Time button Aas necessary to set the time.
* As you hold the button down, the time (at 4) will increment first in minute intervals,
then in ten-minute intervals, and then in one-hour intervals.
4. After making the appropriate settings at Steps 2 and 3, press the Filter button 4
to lock in the values.
Day of the Week Setting

–7 –
Note:
Your new entries at Steps 2 and 3 will be cancelled if you press the Mode (Return) button
2before pressing the Filter button 4.
5. Press the Mode (Return) button 2to complete the setting procedure. This will return
the display to the standard control screen, where 1will now show the newly set day
and time.
5 Using the Remote Controller
(1) How to Start, Stop, Change the Mode, and Adjust the Temperature
˚C
˚C
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
2
7
2
3
3
8
6
4
5
8
7
1
1
5
6
<To Start Operation>
■ Press the ON/OFF button 1.
•The ON lamp 1and the display area
come on.
Note:
●When the unit is restarted, initial settings
are as follows.
<To Stop Operation>
■Press the ON/OFF button 1again.
•The ON lamp 1and the display
area go dark.
Mode
Temperature
setting
Fan speed
Airflow up/
down
Remote Controller settings
Last operation mode
Last set temperature
Last set fan speed
COOL or DRY
Mode HEAT
FAN
Horiz.
outlet
Last
setting
Horiz.
outlet

– 8 –
<Selecting the Mode>
■ With the unit running, press the Mode button 2as many times as necessary.
• Each press switches operation to the next mode, in the sequence shown below.
The currently selected mode is shown at 2.
→COOL →DRY →FAN →AUTO →HEAT →Ventilate
*1 *1,*3,*4 *1 *1,*2
Note:
*1 Availability of this mode depends on the type of unit connected.
*2 Appears only on Mr. Slim units with installed ventilation functionality.
*3 Does not appear if Auto Mode has been disabled at the Function Selection of remote
controller. For information about how to set this function, refer to section 6, item [4]–
2 (2).
*4 HEAT and COOL do not appear during AUTO mode if Auto mode display has been
disabled at the Function Selection of remote controller. For information about how to
set this function, refer to section 6, item [4]–4 (3).
<To Change the Room Temperature Setting...>
■ To lower the temperature: Press the Set Temperature button 3.
■ To raise the temperature: Press the Set Temperature button 3.
• Each press changes the setting by 1 °C. The current setting is displayed at 3.
• The available ranges are as follows. *1, *2
COOL or DRY
mode FANAUTO modeHEAT mode
19 - 30 °C
(67 - 87 °F) *3
19 - 28 °C
(67 - 83 °F) *3
17 - 28 °C
(63 - 83 °F) *3 Cannot be set.
Note:
*1 Available ranges vary according to the type of unit connected (Mr. Slim, CITY MULTI,
etc.).
*2 If temperature range limits have been set at Function Selection of remote controller,
the available ranges will be narrower than shown above. If you attempt to set a value
outside of the restricted range, the display will show a message indicating that the
range is currently restricted.
For information about how to set and clear these range limits, refer to section 6, item
[4]–2 (3).
*3 If Function Selection of remote controller are set to display the temperature in
Fahrenheit. For information about how to select °C or °F , refer to section 6, item [4]–
4 (1).
<Room Temperature Display>
During operation, the intake temperature is shown at 4.
Note:
●To display range is 8 °C to 39 °C. If the temperature is below 8 °C or above 39 °C,
the corresponding value (8 °C or 39 °C) will blink on the display.
●If you are using the remote controller to drive multiple indoor units, the display will
show the temperature at the master unit.
●You can select which temperature sensor to use to detect the temperature: either the
sensor at the indoor unit (“At Unit”), or else the sensor at the remote controller (“At
Remote”). The default setting is “At Unit”.
To change the location of the sensor at the indoor unit:
• CITY MULTI models: Consult your dealer.
• Mr. Slim models: Refer to the installation instructions.
●If room temperature display is disabled in Function Selection of remote controller, the
room temperature will not appear. For information about how to enable or disable this
feature, refer to section 6, item [4]–4 (2).
●If Fahrenheit display is selected at Function Selection of remote controller, the display
will show the °F mark. For information about how to select °C or °F, refer to section
6, item [4]–4 (1).

–9 –
(2) Fan Speed, Airflow Direction, and Ventilation
<To Change the Fan Speed...>
■ Press the Fan Speed button 5as many times as necessary while the system is
running.
•Each press changes the force. The currently selected speed is shown at 5.
•The change sequence, and the available settings, are as follows.
FAN
SPEED Display
4-speed
model
2-speed
model
3-speed
model
Auto Speed 1 Speed 2 Speed 3 Speed 4
Note:
●The number of available fan speeds depends on the type of unit connected. Note also
that some units do not provide an “Auto”setting.
●In the following cases, the actual fan speed generated by the unit will differ from the
speed shown the remote controller display.
1. While the display is showing “STAND BY”or “DEFROST”.
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.
4. When the unit is in DRY mode.
<To Change the Airflow’s Up/Down Direction>
■ With the unit running, press the Airflow Up/Down button 6as necessary.
•Each press changes the direction. The current direction is shown at 6.
•The change sequence, and the available settings, are as follows.
Auto Horiz. 1 2 3 4 Swing
Display
* Note that during swing operation, the directional indication on the screen does not
change in sync with the directional vanes on the unit.
* Some models do not support directional settings.
Note:
●Available directions depend on the type of unit connected. Note also that some units
do not provide an “Auto”setting.
●In the following cases, the actual air direction will differ from the direction indicated
on the remote controller display.
1. While the display is showing “STAND BY”or “DEFROST”.
2. Immediately after starting heater 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.
<To Change the Right/Left Air Direction>
■ Press the louver button 7as necessary.
•The louver image 7appears.
Each press of the button switches the setting as follows.
(ON) (OFF)
During swing operation, the arrow display
move to the left and right.
No display
(Stop)

–10 –
▲
<Using Ventilation>
On Mr. Slim models
●To run the ventilator together with the indoor unit:
■Press the ON/OFF button 1.
•The Vent indication appears on the screen (at 8). The ventilator will now
automatically operate whenever the indoor unit is running.
●To run the ventilator independently:
■Press the Mode button 2until appears on the display. This will cause the
ventilator to start.
●To change the ventilator force:
■Press the Ventilation button 8as necessary.
•Each press toggles the setting, as shown below.
▲
Low High
On CITY MULTI models
●To run the ventilator together with the indoor unit:
■Press the ON/OFF button 1.
•The Vent indication appears on the screen (at 8). The ventilator will now
automatically operate whenever the indoor unit is running.
●To run the ventilator only when the indoor unit is off:
■Press the Ventilation button 8while the indoor unit is off.
•The On lamp (at 1) and the Vent indication (at 8) come on.
●To change the ventilator force:
■Press the Ventilation button 8as necessary.
•Each press toggles the setting, as shown below.
(Low) (High)
▲ ▲ ▲
No display
(Stop)
(OFF)
Note:
●With some model configurations, the fan on the indoor unit may come on even when
you set the ventilator to run independently.

–11 –
(3) Using the Timer
This section explains how to set and use the timer. You can use Function Selection of remote controller to select which of three types of timer to use: 1Weekly timer, 2Simple
timer, or 3Auto Off timer.
For information about how to set the Function Selection of remote controller, refer to section 6, item [4]–3 (3).
1Using the Weekly Timer
■The weekly timer can be used to set up to eight operations for each day of the week.
•Each operation may consist of any of the following: ON/OFF time together with a temperature setting, or ON/OFF time only, or temperature setting only.
•When the current time reaches a time set at this timer, the air conditioner carries out the action set by the timer.
■Time setting resolution for this timer is 1 minute.
Note:
*1. Weekly Timer/Simple Timer/Auto Off Timer cannot be used at the same time.
*2. The weekly timer will not operate when any of the following conditions is in effect.
The timer feature is off; the system is in an malfunction state; a test run is in progress; the remote controller is undergoing self-check or remote controller check; the user is
in the process of setting a function; the user is in the process of setting the timer; the user is in the process of setting the current day of the week or time; the system is under
central control. (Specifically, the system will not carry out operations (unit on, unit off, or temperature setting) that are prohibited during these conditions.)
˚C
SUN
ON
WEEKLY
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
2
42 3
A9 78
0
4
1
3
B
1
Operation No.
Day Setting
<How to Set the Weekly Timer>
1. Be sure that you are at a standard control screen, and that the weekly timer indicator 1is
shown in the display.
2. Press the Timer Menu button B, so that the “Set Up”appears on the screen (at 2). (Note that
each press of the button toggles the display between “Set Up”and “Monitor”.)
3. Press the Timer On/Off (Set Day) button 9to set the day. Each press advances the display
at 3to the next setting, in the following sequence: “Sun Mon Tues Wed Thurs Fri Sat”→“Sun”
→... →“Fri”→“Sat”→“Sun Mon Tues Wed Thurs Fri Sat”...
4. Press the or Operation button (7or 8) as necessary to select the appropriate
operation number (1 to 8) 4.
* Your inputs at Steps 3 and 4 will select one of the cells from the matrix illustrated below.
(The remote-controller display at left shows how the display would appear when setting
Operation 1 for Sunday to the values indicated below.)
Op No. Sunday Monday …Saturday
Note:
By setting the day to “Sun Mon Tues Wed Thurs Fri Sat”, you can set the same operation to
be carried out at the same time every day.
(Example: Operation 2 above, which is the same for all days of the week.)
No. 1
No. 2
…
No. 8
•8:30
•ON
•23 °C
•10:00
•OFF
•10:00
•OFF
•10:00
•OFF
•10:00
•OFF
▲
Setup Matrix
<Operation 1 settings for Sun-
day>
Start the air conditioner at 8:30,
with the temperature set to
23 °C.
<Operation 2 settings for every
day>
Turn off the air conditioner at
10:00.
▲

–12 –
<Setting the Weekly Timer>
5. Press the appropriate Set Time button Aas necessary to set the desired time (at 5).
* As you hold the button down, the time first increments in minute intervals, then in ten-
minute intervals, and then in one-hour intervals.
6. Press the ON/OFF button 1to select the desired operation (ON or OFF), at 6.
* Each press changes the next setting, in the following sequence: No display (no setting) →
“ON”→“OFF”
7. Press the appropriate Set Temperature button 3to set the desired temperature (at 7).
* Each press changes the setting, in the following sequence: No display (no setting)
⇔24 ⇔25 ⇔... ⇔29 ⇔30 ⇔12 ⇔... ⇔23 ⇔No display.
(Available range: The range for the setting is 12 °C to 30 °C. The actual range over which
the temperature can be controlled, however, will vary according to the type of the
connected unit.)
8. After making the appropriate settings at Steps 5, 6. and 7, press the Filter button 4to lock
in the values.
To clear the currently set values for the selected operation, press and quickly release the
Check (Clear) button 1once.
* The displayed time setting will change to “—:—”, and the On/Off and temperature settings
will all disappear.
(To clear all weekly timer settings at once, hold down the Check (Clear) button 0for two
seconds or more. The display will begin flashing, indicating that all settings have been
cleared.)
Note:
Your new entries will be cancelled if you press the Mode (Return) button 2before pressing the
Filter button 4.
If you have set two or more different operations for exactly the same time, only the operation with
the highest Operation No. will be carried out.
9. Repeat Steps 3 to 8 as necessary to fill as many of the available cells as you wish.
10. Press the mode (Return) button 2to return to the standard control screen and complete the
setting procedure.
11. To activate the timer, press the Timer On/Off button 9, so that the “Timer Off”indication
disappears from the screen. Be sure that the “Timer Off”indication is no longer
displayed.
* If there are no timer settings, the “Timer Off”indication will flash on the screen.
Shows the temperature setting
* Does not appear if temperature is not set.
˚C
SUN
ON
WEEKLY
6
7
5
Shows the time setting Shows the selected operation (ON or OFF)
* Does not appear if operation is not set.
<How to View the Weekly Timer Settings>
Timer Settings
1. Be sure that the weekly timer indicator is visible on the screen (at 1).
2. Press the Timer Menu button Bso that “Monitor”is indicated on the screen
(at 8).
3. Press the Timer On/Off (Set Day) button 9as necessary to select the day
you wish to view.
4. Press the or Operation button (7or 8) as necessary to change the
timer operation shown on the display (at 9).
* Each press will advance to the next timer operation, in order of time
setting.
5. To close the monitor and return to the standard control screen, press the
Mode (Return) button 2.
˚C
TIMER
SUN
ON
OFF
WEEKLY
1
9
8
<To Turn Off the Weekly Timer>
Press the Timer On/Off button 9so that “Timer Off”appears at 0.
˚C
˚C
TIME SUN
WEEKLY
0
˚C
˚C
TIME SUN
WEEKLY
0
<To Turn On the Weekly Timer>
Press the Timer On/Off button 9so that the “Timer Off”indication (at 0) goes
dark.

–13 –
2Using the Simple Timer
■You can set the simple timer in any of three ways.
•Start time only: The air conditioner starts when the set time has elapsed.
•Stop time only: The air conditioner stops when the set time has elapsed.
•Start & stop times: The air conditioner starts and stops at the respective elapsed
times.
■The simple timer (start and stop) can be set only once within a 72-hour period.
The time setting is made in hour increments.
Note:
*1. Weekly Timer/Simple Timer/Auto Off Timer cannot be used at the same time.
*2. The simple timer will not operate when any of the following conditions is in effect.
The timer is off; the system is in malfunction state; a test run is in progress; the
remote controller is undergoing self-check or remote controller check; the user is in
the process of selecting a function; the user is in the process of setting the timer; the
system is under central control. (Under these conditions, On/Off operation is
prohibited.)
ONHr
AFTER
SIMPLE
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
2A9
0
4
1
B
<How to Set the Simple Timer>
ONHr
AFTER
SIMPLE
4
1
3
2
1. Be sure that you are at a standard control screen, and that the simple timer indicator
is visible in the display (at 1).
When something other than the Simple Timer is displayed, set it to SIMPLE TIMER
using the function selection of remote controller (see 6.[4]–3 (3)) timer function setting.
2. Press the Timer Menu button B, so that the “Set Up”appears on the screen (at 2).
(Note that each press of the button toggles the display between “Set Up”and
“Monitor”.)
3. Press the ON/OFF button 1to display the current ON or OFF simple timer setting.
Press the button once to display the time remaining to ON, and then again to display
the time remaining to OFF. (The ON/OFF indication appears at 3).
•“ON”timer: The air conditioner will start operation when the specified number of
hours has elapsed.
•“OFF”timer:The air conditioner will stop operation when the specified number of
hours has elapsed.
4. With “ON”or “OFF”showing at 3: Press the appropriate Set Time button Aas
necessary to set the hours to ON (if “ON”is displayed) or the hours to OFF (if “OFF”
is displayed) at 4.
•Available Range: 1 to 72 hours
5. To set both the ON and OFF times, repeat Steps 3 and 4.
* Note that ON and OFF times cannot be set to the same value.
6. To clear the current ON or OFF setting: Display the ON or OFF setting (see step 3)
and then press the Check (Clear) button 0so that the time setting clears to “—” at
4. (If you want to use only an ON setting or only an OFF setting, be sure that the
setting you do not wish to use is shown as “—”.)
7. After completing steps 3 to 6 above, press the Filter button 4to lock in the value.
Note:
Your new settings will be cancelled if you press the Mode (Return) button 2before
pressing the Filter button 4.
8. Press the Mode (Return) button 2to return to the standard control screen.
9. Press the Timer On/Off button 9to start the timer countdown. When the timer is
running, the timer value is visible on the display. Be sure that the timer value is
visible and appropriate.
Timer Setting
Action (On or Off)
*“— —” is displayed if there is no
setting.

–14 –
<Viewing the Current Simple Timer Settings>
1. Be sure that the simple timer indicator is visible on the screen (at 1).
2. Press the Timer Menu button B, so that the “Monitor”appears on the screen
(at 5).
•If the ON or OFF simple timer is running, the current timer value will
appear at 6.
•If ON and OFF values have both been set, the two values appear
alternately.
3. Press the Mode (Return) button 2to close the monitor display and return
to the standard control screen.
TIMER ON
OFF
Hr
AFTER
SIMPLE
1
6
5
Timer Setting
<To Turn Off the Simple Timer...>
Press the Timer On/Off button 9so that the timer setting no longer appears
on the screen (at 7).
<To Turn On the Simple Timer...>
Press the Timer On/Off button 9so that the timer setting becomes visible at
7.
˚C
˚C
SIMPLE
7
˚C
˚C
ONHr
AFTER
SIMPLE
7
Examples
If ON and OFF times have both been set at the simple timer, operation and display are as
indicated below.
Example 1:
Start the timer, with ON time set sooner than OFF time
ON Setting: 3 hours
OFF Setting: 7 hours
ONHr
AFTER
SIMPLE
˚C
˚C
OFF
Hr
AFTER
SIMPLE
SIMPLE
˚C
˚C
OFF
Hr
AFTER
SIMPLE
ONHr
AFTER
SIMPLE
˚C
˚C
SIMPLE
Example 2:
Start the timer, with OFF time is sooner than ON time
ON Setting: 5 hours
OFF Setting: 2 hours
▲
▲
▲
▲
At 3 hours
after timer
start
At Timer Start
At 7 hours after
timer start
Display shows the timer’s ON set-
ting (hours remaining to ON).
Display changes to show the tim-
er’s OFF setting (hours remaining
to OFF).
The time displayed is OFF setting
(7 hours) –ON setting (3 hours) =
4 hours.
The air conditioner goes off, and
will remain off until someone re-
starts it.
At 2 hours
after timer
start
At Timer Start
At 5 hours after
timer start
Display shows the timer’s OFF
setting (hours remaining to OFF).
Display changes to show the tim-
er’s ON setting (hours remaining
to ON).
The time displayed is ON setting
(5 hours) –OFF setting (2 hours) =
3 hours.
The air conditioner comes on, and
will continue to run until someone
turns it off.

–15 –
3Using the Auto Off Timer
■This timer begins countdown when the air conditioner starts, and shuts the air
conditioner off when the set time has elapsed.
■Available settings run from 30 minutes to 4 hours, in 30-minute intervals.
Note:
*1. Weekly Timer/Simple Timer/Auto Off Timer cannot be used at the same time.
*2. The Auto Off timer will not operate when any of the following conditions is in effect.
The timer is off; the system is in malfunction state; a test run is in progress; the
remote controller is undergoing self-check or remote controller check; the user is in
the process of selecting a function; the user is in the process of setting the timer; the
system is under central control. (Under these conditions, On/Off operation is
prohibited.)
AFTER OFF
AUTO OFF
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
2A9
4
B
<How to Set the Auto Off Timer>
1. Be sure that you are at a standard control screen, and that the Auto Off timer indicator
is visible in the display (at 1).
When something other than the Auto Off Timer is displayed, set it to AUTO OFF
TIMER using the function selection of remote controller (see 6.[4]–3 (3)) timer
function setting.
2. Hold down the Timer Menu button Bfor 3 seconds, so that the “Set Up”appears on
the screen (at 2).
(Note that each press of the button toggles the display between “Set Up”and
“Monitor”.)
3. Press the appropriate Set Time button Aas necessary to set the OFF time (at 3).
4. Press the Filter button 4to lock in the setting.
Note:
Your entry will be cancelled if you press the Mode (Return) button 2before pressing the
Filter button 4.
5. Press the Mode (Return) button 2to complete the setting procedure and return to
the standard control screen.
6. If the air conditioner is already running, the timer starts countdown immediately. Be
sure to check that the timer setting appears correctly on the display.
<Checking the Current Auto Off Timer Setting>
AFTER OFF
AUTO OFF
3
1
2
Timer Setting
AFTER
TIMER
OFF
AUTO OFF
5
1
4
Timer Setting
1. Be sure that the “Auto Off”is visible on the screen (at 1).
2. Hold down the Timer Menu button Bfor 3 seconds, so that “Monitor”is indicated on
the screen (at 4).
•The timer remaining to shutdown appears at 5.
3. To close the monitor and return to the standard control screen, press the Mode
(Return) button 2.

–16 –
<To Turn Off the Auto Off Timer...>
●Hold down the Timer On/Off button 9for 3 seconds, so that “Timer Off”appears (at
6) and the timer value (at 7) disappears.
●Alternatively, turn off the air conditioner itself. The timer value (at 7) will disappear
from the screen.
<To Turn On the Auto Off Timer...>
●Hold down the Timer On/Off button 9for 3 seconds. The “Timer Off “indication
disappears (at 6), and the timer setting comes on the display (at 7).
●Alternatively, turn on the air conditioner. The timer value will appear at 7.
˚C
˚C
AUTO OFF
6
7
AUTO OFF
7
˚C
˚C
AFTER OFF
AUTO OFF
6
7

–17 –
(4) Locking the Remote Controller Buttons (Operation function limit
controller)
■If you wish, you can lock the remote controller buttons. You can use the Function
Selection of remote controller to select which type of lock to use. (For information
about selecting the lock type, see section 6, item [4]–2 (1)).
Specifically, you can use either of the following two lock types.
1Lock All Buttons: Locks all of the buttons on the remote controller.
2Lock All Except ON/OFF: Locks all buttons other than the ON/OFF button.
Note:
The “Locked”indicator appears on the screen to indicate that buttons are currently
locked.
˚C
˚C
TIME SUN
FUNCTION
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
4
1
1
Lock Indicator
<How to Lock the Buttons>
1. While holding down the Filter button 4, press and hold down the ON/OFF button 1
for 2 seconds. The “Locked”indication appears on the screen (at 1), indicating that
the lock is now engaged.
* If locking has been disabled in Function Selection of remote controller, the screen
will display the “Not Available”message when you press the buttons as described
above.
•If you press a locked button, the “Locked”indication (at 1) will blink on the display.
˚C
˚C
FUNCTION
1
˚C
˚C
FUNCTION
1
<How to Unlock the Buttons>
1. While holding down the Filter button 4, press and hold down the ON/OFF button 1
for 2 seconds—so that the “Locked”indication disappears from the screen (at 1).
˚C
˚C
1

–18 –
(5) Other Indications
<Centrally Controlled>
ON/OFF
TEMP.
˚C
˚C
●Displayed when operation is controlled by central controller, etc.
Restricted operations are shown below.
•ON/OFF (including timer operation)
•Operation mode
•Set temperature
Note:
May also be individually restricted.
<Flashing Mode Indicator>
ON/OFF
TEMP.
˚C
˚C
■When flashes continuously
Displayed when another indoor unit connected to the outdoor unit is already operating
in a different operation mode.
Match with the operation mode of the other indoor unit.
■When mode switched after display flashes
Displayed when operation mode is restricted for each season by central controller,
etc.
Use another operation mode.
<Flashing “Filter”>
ON/OFF
TEMP.
˚C
˚C
FILTER
■Indicates that the filter needs cleaning.
Clean the filter.
■When resetting “FILTER”display
When the [FILTER] button is pressed two times successively after cleaning the filter,
the display goes off and is reset.
Note:
●When two or more different types of indoor unit are controlled, the cleaning period
differs with the type of filter. When the master unit cleaning period arrives, “FILTER”
is displayed. When the filter display goes off, the cumulative time is reset.
●“FILTER”indicates the cleaning period when the air conditioner was used under
general indoor air conditions by criteria time. Since the degree of dirtiness depends
on the environmental conditions, clean the filter accordingly.
●The filter cleaning period cumulative time differs with the model.

–19 –
<Flashing Error Codes>
On CITY MULTI Models On Mr. Slim Models
ON/OFF
ERROR CODE
ON/OFF
ERROR CODE
ON lamp
(Flashing)
Error Code
Indoor Unit No.
●If the ON lamp and error code are both flashing: This means that the air conditioner is out of order and operation has been stopped (and cannot resume). Take note of the indicated
unit number and error code, then switch off the power to the air conditioner and call your dealer or servicer.
If you have entered contact number to be called in the event of a problem, the screen displays this number.
(You can set this up under Function Selection of remote controller. For information, refer to section 6.)
Indoor Unit’s Refrig-
erant Address
Error Code Indoor Unit No.
Alternating Display
ON lamp
(Flashing)
On CITY MULTI Models On Mr. Slim Models When the Check button is pressed:
●If only the error code is flashing (while the ON lamp remains lit): Operation is continuing, but there may be a problem with the system. In this case, you should note down the
error code and then call your dealer or servicer for advice.
* If you have entered contact number to be called in the event of a problem, push the Check button to display it on the screen. (You can set this up under Function Selection of
remote controller. For information, refer to section 6.)
ON/OFF
˚C
˚C
ERROR CODE
ON/OFF
˚C
˚C
ERROR CODE
ON/OFF
CALL:XXXX
XXX:XXX
Error Code Error Code

–20 –
6 Function Selection
Function selection of remote controller
The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed.
Item 1
1. Change Language
(“CHANGE
LANGUAGE”)
2. Function limit
(“FUNCTION
SELECTION”)
3. Mode selection
(“MODE SELEC-
TION”)
4. Display change
(“DISP MODE
SETTING”)
Item 2
Language setting to display
(1) Operation function limit setting (operation lock) (“LOCKING
FUNCTION”)
(2) Use of automatic mode setting (“SELECT AUTO MODE”)
(3) Temperature range limit setting (“LIMIT TEMP FUNCTION”)
(1) Remote controller main/sub setting (“CONTROLLER MAIN/
SUB”)
(2) Use of clock setting (“CLOCK”)
(3) Timer function setting (“WEEKLY TIMER”)
(4) Contact number setting for error situation (“CALL.”)
(1) Temperature display °C/°F setting (“TEMP MODE °C/°F”)
(2) Suction air temperature display setting (“ROOM TEMP DISP
SELECT”)
(3) Automatic cooling/heating display setting (“AUTO MODE
DISP C/H”)
Item 3 (Setting content)
•Display in multiple languages is possible
•Setting the range of operation limit (operation lock)
•Setting the use or non-use of “automatic”operation mode
•Setting the temperature adjustable range (maximum, minimum)
•Selecting main or sub remote controller
* When two remote controllers are connected to one group, one controller
must be set to sub.
•Setting the use or non-use of clock function
•Setting the timer type
•Contact number display in case of error
•Setting the telephone number
•Setting the temperature unit (°C or °F) to display
•Setting the use or non-use of the display of indoor (suction) air temperature
•Setting the use or non-use of the display of “Cooling”or “Heating”display
during operation with automatic mode