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

11
Service ·········································· Refer to the Installation Manual.
▌Unit initial set������������������������������ Refer to the Installation Manual.
Unit Setting
Function setting
▌Check ���������������������������������������� Refer to the Installation Manual.
Error history
Self check
Remote controller check
▌Contact information��������������������� Refer to the Installation Manual.
▌Password protection�������������������� Refer to the Installation Manual.
Not all functions are available on all models of connected units.
Icon explanations
Function settings
Date/Time The table below
summarizes the square
icons used in this manual.
Main
Indicates settings that can be made
only from the main remote controller.
OFF
Indicates settings that can be changed
only while the units are not in
operation.
PThe maintenance user password must be entered on the password input screen to change
settings.
Main

12
Basic operations
Power ON/OFF
During operation
Press the [ON/OFF] button.
The ON/OFF lamp will light up in green, and
the operation will start.
During stoppage
Pressing the [ON/OFF] button brings up a
confirmation screen. When it appears, press
the [F3] button.
The ON/OFF lamp will come off, and the
operation will stop.
▌Set temperature range
Operation
mode Set temperature range
Heating 30-45ºC
Hot Water 30-70ºC
Anti-Freeze 10-45ºC
Cooling 10-30ºC
The settable temperature range varies with the
connected unit model.
▌Restart details
Remote controller settings
Operation mode Previous operation mode
Set temperature Previous set temperature
Next
FRI
Unit1
Next
FRI
Unit1

13
Operation mode and set temperature settings
▌Operation mode setting
Button operation
F1 F2 F3 F4
Press the [F1] button to go through the
operation modes in the order of "Heating, Hot
Water, Anti-Freeze, and Cooling."
Select the desired operation mode.
Heating Hot Water
Anti-
Freeze Cooling
Mode1 Mode2 Mode3
■Operation modes that are not available to the
connected unit models will not appear on the
display.
▌Set temperature setting
Button operation
F1 F2 F3 F4
Press the [F2] button to decrease the set
temperature, and press the [F3] button to
increase.
■Refer to the table on page 12 for the settable
temperature range for different operation modes.
Unit1 FRI
Next
Unit1 FRI
Next

14
Operation setting screen
▌Function description
This screen changes the settings for each function.
Button operation
1
F1 F2 F3 F4
Press the [F4] button in the Main display.
2
F1 F2 F3 F4
Use the [F1] button to move the cursor down.
Select an item and press the [F3] button to
change the setting.
After the settings are completed, press the
[Return] button to return to the Main display.
Unit1 FRI
Next
Unit1 FRI
Next
Power Save
Schedule
Fan Mode
Anti-freeze
Yes
No
Normal
No

15
Setting functions and details
Function Details
Power Save Enables and disables Power Save. Yes: Use Power Save.
No: Do not use Power Save.
Schedule Enables and disables the Weekly timer and Period timer. Yes: Use Schedule.
No: Do not use Schedule.
Fan Mode
Spins the fan even when the compressor is stopped to prevent
snow buildup on the fan when it snows in regions where there
is relatively little snow cover.
Normal: The fan also stops when the compressor is stopped.
Snow: The fan continues to operate even when the compressor
is stopped.
Anti-freeze Prevents the freeze.

16
Sensor list
▌Function description
Displays the temperature detected by the control water temperature sensors used as sensor
devices in connected units.
* Refer to the Installation Manual for the connected units for the sensor measurement locations.
Button operation
Displaying the screen
F1 F2 F3 F4
Press the [F4] button in the Operation setting
screen.
Power Save
Schedule
Fan Mode
Anti-freeze
Unit1 FRI
Yes
No
Normal
No
Next

17
Updating the sensor value
F1 F2 F3 F4





Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ






Because the sensor value displays will not
automatically be updated, press the [F3] button
to monitor the most recent status.
F1 F2 F3 F4





Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ






ڦ
The screen shown at left will be displayed
during monitoring.
Sensor list
Unit1 FRI
Update Next
Unit1
Sensor list FRI

18
Checking the sensor value
F1 F2 F3 F4





Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ
Υ






Once monitoring is completed, the results
screen will be displayed (up to 12 items on 2
pages).
The associations between sensor number (1 to
12) and sensor are set up on the connected
units themselves.
Sensor value checking can be facilitated by
filling in the sensor names below beforehand.
Sensor name sheet
Sensor No. Sensor name
1
2
3
4
5
6
7
8
9
10
11
12
Navigating through the screens
■ To return to the Main display ...... [Return] button
■ To return to the Main menu ...... [Menu] button
Sensor list
Unit1 FRI
Update Next

19
Menu operations
Main menu list
Setting and display items Setting details Reference
Schedule Weekly timer Sets the operation schedule for 1 week.
■ You can set up to 8 patterns per day.
* Disabled when a system controller is connected. P. 23
Period timer Sets the operation schedule for a special day.
■ You can set up to 8 patterns per day.
* Disabled when a system controller is connected. P. 26
Power Save Sets the capacity save amount for a specified period.
■ You can set up to 2 patterns per day.
* Disabled when a system controller is connected. P. 29
Error information Displays the error details when an error occurs in the
connected units.
■ The error code, error address, contact name and contact
phone number will be displayed.
P. 41
Running information Monitors and displays the connected unit running status. P. 37
Initial
settings Date/Time Sets the current date and time. P. 21
Contrast Adjusts the LCD contrast. P. 33
Service Unit initial set Function
setting Sets the functions for each connected unit from the remote controller as required. P. 34
Sub remote controller restrictions
Some functions cannot be used on a sub remote controller.

20
Operations in Main menu screen
Button operation
Accessing the Main menu
F1 F2 F3 F4
Press the [Menu] button.
The Main menu screen will be displayed.
Item selection
F1 F2 F3 F4
Press the [F2] button to move the cursor left.
Press the [F3] button to move the cursor right.
Schedule・Power Save
Unit1 FRI
Initial settings
Unit1 FRI
Cursor