Mitsubishi Electric PAR-W31MAA User manual

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Prior to use, thoroughly read the instructions in this manual to use the product correctly.
Retain for future reference.
Make sure that this manual 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.
Hot Water Heat Pump & Chilling Units
Remote Controller PAR-W31MAA
Instruction Book
<ORIGINAL>

Product features
Full-dot LCD display with large characters
for easy viewing
Feature 1
Feature 2
Feature 3
Simple button arrangement
Large, easy-to-press buttons
Large, easy-to-see display
Buttons are arranged according to
usage to allow for intuitive navigation.
Unit1 FRI

Contents
Safety Precautions............................4
Part names and functions ................7
Controller interface..............................................7
LCD.....................................................................9
Introduction......................................10
Menu structure..................................................10
Icon explanations..............................................11
Basic operations .............................12
Power ON/OFF.................................................12
Operation mode and set temperature settings..13
Operation setting screen...................................14
Sensor list.........................................................16
Menu operations..............................19
Main menu list...................................................19
Sub remote controller restrictions.....................19
Operations in Main menu screen......................20
Function settings.............................21
Date/Time..........................................................21
Schedule setting ...............................................22
Using Weekly timer...........................................23
Using Period timer ............................................26
Using Power Save ............................................29
Contrast ............................................................33
Function setting.................................................34
Running information..........................................37
Maintenance.....................................39
Regular checks................................40
Troubleshooting ..............................41
Error information...............................................41
Inquiries ............................................................43
Guide to preventive maintenance
and consumable parts replacement
cycles ...............................................44
Specifications/Others .....................45
Specifications....................................................45
Trial run.............................................................45

4
Safety Precautions
►Thoroughly read the following safety precautions before using the unit.
►Observe these precautions carefully to ensure safety.
►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.
: indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
: indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
: addresses practices not related to personal injury, such
as product and/or property damage.
General precautions
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.
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.
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.
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.

5
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.
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.
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
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.

6
Additional precautions
To avoid damage to the controller, use appropriate tools to install, inspect, or
repair the controller.
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 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.
To avoid damage to the controller, provide protection against static electricity.
If the supply cord is damaged, it must be replaced by the manufacturer, its
service agent or similarly qualified persons in order to avoid a hazard.
This appliance is intended to be used by expert or trained users in shops, in
light industry and on farms, or for commercial use by lay persons.
This appliance is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the
appliance.

7
Part names and functions
Controller interface
①
⑥
②③④
⑦ ⑧ ⑨ ⑩
⑤
Function buttons

8
①[ON/OFF] button
Press once to turn the controller on. Pressing it
again brings up a confirmation screen. When it
appears, press the [F3] button to turn the
controller off.
②[Select] button
Press to save the setting.
③[Return] button
Press to return to the previous screen. (May not
return depending on the screen)
④[Menu] button P. 20
Press to bring up the Main menu (Main display
depending on the screen).
⑤Backlit LCD
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.
When the backlight is off, pressing any
button turns the backlight on and does not
perform its function.
⑥ON/OFF lamp
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.
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.
⑦⑧⑨⑩⑦⑧⑨⑩
⑦Function button [F1]
Main display: Press to switch the operation
mode.
Main menu: Disabled
⑧Function button [F2]
Main display: Press to decrease the set water
temperature.
Main menu: Press to select icons on the left.
⑨Function button [F3]
Main display: Press to increase the set water
temperature.
Main menu: Press to select icons on the right.
⑩Function button [F4]
Main display: Press to display the next page.
Main menu: Disabled
Main display Main menu
Function guide
Unit1 FRI
Next
Schedule・Power Save
Unit1 FRI

9
LCD
▌Main display
3/3
②
④
⑧
⑤
⑥
①
⑦
③
⑨
①Remote controller name
Remote controller name appears here.
(Four-digit code will appear during an error or a
preliminary error. Refer to the Installation
Manual.)
②Date and time
The current date, day of the week, and time
appear here. (Refer to the Installation Manual.)
③
Appears while the units are operated in the
energy-save mode. (Will not appear on some
models of connected units)
④Number of connected units
The number of currently operating units and the
total number of units appear here.
⑤Button function guide
Functions of the corresponding buttons appear
here.
⑥Operation mode P. 13
Operation mode appears here.
⑦Water temperature
The temperature of the water currently
controlled appears here.
⑧Set water temperature
The water temperature currently set appears
here.
⑨Centralized controller
The icon for whether a system controller is
connected appears on the right of the energy-
save mode icon.
The display contents may vary depending
on the connected unit model.
Unit1 FRI
Next

10
Introduction
• Do not attempt to install the remote controller by yourself. (Safety and functionality
cannot be guaranteed.)
• After installation work is completed, carefully read the "Items to check during the trial
run" included in the Installation Manual.
• After the installation work has been completed by the designated installer, the service
agency must carry out a trial run in the presence of the user, and the user must
receive the explanation of the correct use of the system for safely.
• Ensure that you receive the Installation Manual check list.
Menu structure
Pressing the [Menu] button brings up the Main menu screen.
Refer to page 20 for details on the Main menu screen operations.
Schedule ·········································· P. 22
▌Weekly timer������������������������������� P. 23
▌Period timer�������������������������������� P. 26
▌Power Save��������������������������������� P. 29
Error information ·········································· P. 41
Running information ·········································· P. 37
Initial settings ·········································· Refer to the Installation Manual.
▌Date/Time����������������������������������� Refer to the Installation Manual.
▌Date Format�������������������������������� Refer to the Installation Manual.
▌Daylight saving time �������������������� Refer to the Installation Manual.
▌Language ����������������������������������� Refer to the Installation Manual.
▌Contrast������������������������������������� Refer to the Installation Manual.
▌RC name ������������������������������������ Refer to the Installation Manual.
▌Main/Sub������������������������������������ Refer to the Installation Manual.
Main display
Operation setting
Sensor list