Mitsubishi Electric PAR-31MAA User manual

Prior to use, thoroughly read the instructions in this manual to use the product correctly.
Retain for future reference.
Make sure that this CD-ROM and the Installation Manual are passed on to any future users.
To ensure safety and proper operation of the remote controller, the remote controller should
only be installed by qualified personnel.
CITY MULTI Control System
and Mitsubishi Mr. Slim Air Conditioners
MA Remote Controller PAR-31MAA
Instruction Book
English
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Mode Temp.
Cool Set temp.
Product features
Feature 1
Large, easy-to-see display
Full-dot LCD display with large characters
for easy viewing
Feature 2
Simple button arrangement
Feature 3
Large, easy-to-press buttons
Buttons are arranged according
to usage to allow for intuitive
navigation.
Frequently used buttons are larger
than other buttons to prevent
unintended pressing of other
buttons.

Contents
Safety precautions .................................... 4
Names and functions of controller components ......... 6
Controller interface ....................................................6
Display.......................................................................8
Basic operations .......................................... 12
Power ON/OFF........................................................12
Operation mode, temperature, and fan speed settings ..........14
Maintenance .................................................52
Troubleshooting ............................................ 54
Specifications ................................................ 56
Filter information......................................................52
Error information......................................................54
Read before operating the controller ......... 10
Menu structure.........................................................10
Icon explanations..................................................... 11
Main menu list .........................................................18
Restrictions for the sub remote controller................19
Navigating through the Main menu..........................20
Vane•Louver•Vent. (Lossnay)..................................22
High power ..............................................................24
Clock........................................................................25
Timer (On/Off timer).................................................26
(Auto-Off timer)..............................................28
Weekly timer............................................................30
OU silent mode........................................................32
Restriction................................................................34
Energy saving..........................................................38
Night setback...........................................................42
Manual vane angle ..................................................44
Main display.............................................................46
Contrast...................................................................47
Language selection .................................................48
Function setting .......................................................50
Navigating through the menu ......................18
Controller operation-Function settings .......22

4
WARNING
• Thoroughly read the following safety precautions before using the unit.
• Observe these precautions carefully to ensure safety.
CAUTION
Indicates a risk of death or serious injury.
Indicates a risk of serious injury or structural damage.
WARNING
Safety precautions
• After reading this manual, pass it on to the end user to retain for future reference.
• Keep this manual for future reference and refer to it as necessary. This manual should be made available
to those who repair or relocate the controller. Make sure that the manual is passed on to any future
users.
General precautions
To reduce the risk of electric shock, malfunctions,
smoke or fire, do not operate the switches/buttons or
touch other electrical parts with wet hands.
To reduce the risk of shorting, current leakage,
electric shock, malfunctions, smoke, or fire, do not
wash the controller with water or any other liquid.
Do not install the unit in a place where large
amounts of oil, steam, organic solvents, or corrosive
gases, such as sulfuric gas, are present or where
acidic/alkaline solutions or sprays are used
frequently. These substances can compromise
the performance of the unit or cause certain
components of the unit to corrode, which can result
in electric shock, malfunctions, smoke, or fire.
When disinfecting the unit using alcohol, ventilate
the room adequately. The fumes of the alcohol
around the unit may cause a fire or explosion when
the unit is turned on.
To reduce the risk of injury or electric shock, before
spraying a chemical around the controller, stop the
operation and cover the controller.
To reduce the risk of injury or electric shock, stop
the operation and switch off the power supply before
cleaning, maintaining, or inspecting the controller.
If any abnormality (e.g., burning smell) is noticed,
stop the operation, turn off the power switch, and
consult your dealer. Continued use of the product
may result in electric shock, malfunctions, or fire.
Properly install all required covers to keep moisture
and dust out of the controller. Dust accumulation and
water can cause electric shock, smoke, or fire.
CAUTION
To reduce the risk of fire or explosion, do not place
flammable materials or use flammable sprays
around the controller.
To reduce the risk of damage to the controller, do not
directly spray insecticide or other flammable sprays
on the controller.
To reduce the risk of environmental pollution, consult
an authorized agency for proper disposal of remote
controller.
To reduce the risk of electric shock or malfunctions,
do not touch the touch panel, switches, or buttons
with a pointy or sharp object.

5
To reduce the risk of injury and electric shock, avoid
contact with sharp edges of certain parts.
To avoid injury from broken glass, do not apply
excessive force on the glass parts.
To reduce the risk of injury, wear protective gear
when working on the controller.
Precautions for moving or repairing the controller
WARNING CAUTION
The controller should be repaired or moved only by
qualified personnel. Do not disassemble or modify
the controller.
Improper installation or repair may cause injury,
electric shock, or fire.
To reduce the risk of shorting, electric shock, fire,
or malfunction, do not touch the circuit board with
tools or with your hands, and do not allow dust to
accumulate on the circuit board.
Additional precautions
To avoid damage to the controller, use appropriate
tools to install, inspect, or repair the controller.
To avoid discoloration, do not use benzene, thinner,
or chemical rag to clean the controller. To clean the
controller, wipe with a soft cloth soaked in water with
mild detergent, wipe off the detergent with a wet
cloth, and wipe off water with a dry cloth.
This controller is designed for exclusive use with the
Building Management System by Mitsubishi Electric.
The use of this controller for with other systems or
for other purposes may cause malfunctions. To avoid damage to the controller, provide protection
against static electricity.

6
Names and functions of controller components
Controller interface
Function buttons
5
6
1234
7890

7
Press to turn ON/OFF the indoor unit.
1ON/OFF button
This lamp lights up in green while the unit
is in operation. It blinks while the remote
controller is starting up or when there is
an error.
Press to save the setting.
Main display: Press to change the operation
mode.
Main menu: Press to move the cursor down.
Press to return to the previous screen.
Main display : Press to decrease temperature.
Main menu: Press to move the cursor up.
Press to bring up the Main menu.
Main display : Press to increase temperature.
Main menu: Press to go to the previous page.
Operation settings will appear.
When the backlight is off, pressing any
button turns the backlight on and it
will stay lit for a certain period of time
depending on the screen.
Main display : Press to change the fan speed.
Main menu: Press to go to the next page.
6ON/OFF lamp
2SELECT button
7Function button F1
3RETURN button
8Function button F2
4MENU button Page 20
9Function button F3
5Backlit LCD
0Function button F4
When the backlight is off, pressing any
button turns the backlight on and does
not perform its function. (except for the
ON/OFF button)
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main
Main display:
Cursor Page
Main menu
Vane·Louver·Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
The functions of the function buttons
change depending on the screen.
Refer to the button function guide that
appears at the bottom of the LCD for
the functions they serve on a given
screen.
When the system is centrally
controlled, the button function guide
that corresponds to the locked button
will not appear.
Main display Main menu
Function guide
7890 7890

8
Fri
Mode Temp. Fan
Room
Cool Auto
Set temp.
Fri
Cool
Mode Temp. Fan
AutoSet temp.
Names and functions of controller components
Display
The main display can be displayed in two different modes: "Full" and "Basic."
The factory setting is "Full." To switch to the "Basic" mode, change the setting
on the Main display setting. (Refer to page 46.)
Full mode
Basic mode
* All icons are displayed for
explanation.
1
2
3
4
5
j
i
4
3
hgfedcb
6
8
0
1
a
7
9
k
5
2

9
Fan speed setting appears here.
4Fan speed Page 16
Appears while the units are operated in the
energy-save mode. (Will not appear on some
models of indoor units)
Appears while the outdoor units are operated in
the silent mode.
Preset temperature appears here.
Appears when the ON/OFF operation is centrally
controlled.
Current time appears here.
Appears when the buttons are locked.
Indoor unit operation mode appears here.
Appears when the operation mode is centrally
controlled.
ePage 40
fPage 32
2Preset temperature Page 15
6
bPage 36
1Operation mode Page 14
7
Indicates the vane setting.
hPage 22
Indicates the louver setting.
Indicates the ventilation setting.
Appears when the On/Off timer (Page 26), Night
setback (Page 42), or Auto-off timer (Page 28)
function is enabled.
appears when the timer is disabled by the
centralized control system.
iPage 23
jPage 23
cPage 26, 28, 42
Indicates when filter needs maintenance.
Appears when the filter reset function is centrally
controlled.
Appears when the preset temperature is centrally
controlled.
0Page 52
9
8
Appears when the Weekly timer is enabled.
dPage 30
Appears when the preset temperature range is
restricted.
kPage 34
Functions of the corresponding buttons appear
here.
5Button function guide
Appears when the built-in thermistor on the
remote controller is activated to monitor the
room temperature (a).
appears when the thermistor on the
indoor unit is activated to monitor the room
temperature.
g
Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Menu
screen. (Refer to page 20.)
3Clock
(See the Installation Manual.)
Current room temperature appears here.
aRoom temperature
(See the Installation Manual.)

Page 22
Page 24
Page 26
Page 28
Page 30
Page 32
Page 34
Page 36
Page 38
Page 40
Page 42
Page 52
Page 54
Refer to the Instructions Manual that
came with the automatic elevating panel.
Page 44
Refer to the Installation Manual.
Page 25
Page 46
Page 47
Refer to the Installation Manual.
Refer to the Installation Manual.
Refer to the Installation Manual.
Page 48
10
Read before operating the controller
Menu structure
Main menu
Press the
MENU button.
Move the cursor
to the desired
item with
the F1 and
F2 buttons,
and press
the SELECT
button.
Vane•Louver•Vent. (Lossnay)
High power
Timer
Weekly timer
OU silent mode
Night setback
Restriction
Energy saving
Filter information
Error information
Maintenance
Initial setting
On/Off timer
Auto-Off timer
Temp. range
Operation lock
Auto return
Schedule
Auto descending panel
Manual vane angle
Main/Sub
Clock
Main display
Contrast
Display details
Auto mode
Administrator password
Language selection