Mitsubishi Electric PAR-W21MAA User manual

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WT05310X01
CITY MULTI R410A SERIES HOT WATER SUPPLY,
AIR TO WATER, and FLOW TEMP. CONTROLLER
Remote Controller
PAR-W21MAA
Instruction Book
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 Water
Temperature.................................................................................... 7
(2) Using the Timer............................................................................... 9
1Using the Weekly Timer ............................................................ 9
2Using the Simple Timer ........................................................... 11
3Using the Auto Off Timer ......................................................... 13
(3) Locking the Remote Controller Buttons
(Operation function limit controller) ............................................... 15
(4) Other Indications........................................................................... 16
6. Function Selection........................................................................ 18
7. Initial Setting................................................................................. 22
8. Specifications ............................................................................... 25

– 2 –
Precautions are classified as follows, according to the level of potential danger.
WARNING Denotes a condition or operation which, if handled incorrectly, may lead to serious injury or death.
CAUTION Denotes a condition or operation which, if handled incorrectly, may lead to bodily injury or property damage.
WARNING
1 Safety Precautions
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 –
CAUTION
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 CITY MULTI R410A SERIES HOT
WATER SUPPLY, AIR TO WATER, and FLOW TEMP. CONTROLLER
Remote Controller. 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.
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
temperatures between 0°C (32°F) and 40°C (104°F).) 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 –
Display Section
2PartsNames
Identifies the current operation
Shows the operating mode, etc.
* Multilanguage display is
supported.
“Centrally Controlled” indicator
Indicates that operation of the
remote controller has been
prohibited by a main controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
For purposes of this explanation, all
parts of the display are shown as lit.
During actual operation, only the
relevant items will be lit.
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.
“Locked” indicator
Indicates that remote controller
buttons have been locked.
Timer indicators
The indicator comes on if the
corresponding timer is set.
Water Temperature Display
Shows the water temperature during
water temperature display operation.
Error indicator
Comes on when error occurs.
(Power On indicator)
Indicates that the power is on.
Note:
“PLEASE WAIT” message
This message is displayed for approximately 3 minutes when power is supplied to the unit or when the unit is
recovering from a power failure.
“NOT AVAILABLE” message
This message is displayed if a button is pressed to operate a function that the unit does not have, or a function
that is not available due to the setting.

– 5 –
Operation Section
Down
Up
Opening the
lid.
Down
Up
Back
Ahead
Set Temperature buttons
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Timer ON/OFF button
(Set Day button)
ON/OFF button
INITIAL SETTING button
Test Run button
Check button (Clear button)
CIR.WATER
( Enter button)
Not available

– 6 –
<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 unit’s operation 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).
<How to change the screen>
A: Hold down both the Mode (Return) 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 ).
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.
<How to Set the Day of the Week and Time...>
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 JMon J... JFri JSat.
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 CIR.WATER
button 4to lock in the values.
3 Screen Configuration
Function Selection of remote controller Set Day/Time
Standard Control Screens
Timer Monitor Timer Setup
ADC
BC
B
OFF ON
4 Setting the Day of the Week and Time
Day of the Week &
Time display
Time Setting
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 CIR.WATER 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.
(1) How to Start, Stop, Change the Mode, and Adjust the Water
Temperature
5 Using the Remote Controller
<To Stop Operation>
Press the ON/OFF button 1
again.
•TheONlamp1and the
display area go dark.
<To Start Operation>
Press the ON/OFF button 1.
•TheONlamp1and the display area
come on.
Note:
When the unit is restarted, initial settings
are as follows.
Remote Controller settings
Mode Last operation mode
Temperature
setting Last set temperature

– 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.
Note:
*1 Availability of this mode depends on the type of unit connected.
*2 Does not appear if 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).
<To Change the 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 (1 ° F). The current setting is displayed at
3 .
• The available ranges are as follows. *1, *2
Note:
*1 Available ranges vary according to the type of unit connected.
*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).
<Water Temperature Display>
During operation, the water temperature is shown at 4.
Note:
To display range is 10°C to 90°C (50°F to 194°F).
If you are using the remote controller to drive multiple units, the display will show
the temperature at the main unit.
If water temperature display is disabled in Function Selection of remote controller,
the water 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).
Heating mode Hot Water
mode
Anti-freeze
mode Cooling mode Heating ECO mode
20 - 90°C
(68 - 194°F) *3
20 - 90°C
(68 - 194°F) *3
5 - 45°C
(41 - 113°F) *3
5 - 30°C
(41 - 87°F) *3 Cannot be set.
Heating
*1*2
JHeating ECO
*1*2
JHot Water
*1*2
JAnti-freeze
*1*2
JCooling
*1*2

– 9 –
(2) 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 six 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 unit 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.)
Day Setting
Operation No. <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 9 to set the day. Each press advances the
display at
3 to the next setting, in the following sequence: “Sun Mon Tues Wed Thurs Fri
Sat”
J “Sun” J ... J “Fri” J “Sat” J “Sun Mon Tues Wed Thurs Fri Sat”...
4. Press the or INITIAL SETTING button (7or 8) as necessary to select the
appropriate operation number (1 to 6) 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.)
Setup Matrix
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.)
Op No. Sunday Monday … Saturday
No. 1
•8:30
•ON
•23 ° C (73 ° F)
No. 2 • 10:00
•OFF
•10:00
•OFF
•10:00
•OFF
• 10:00
•OFF
…
No. 6
<Operation 1 settings for
Sunday>
Start the unit at 8:30, with the
temperature set to 23 ° C (73 ° F).
<Operation 2 settings for
every day>
Turn off the unit at 10:00.

– 10 –
<Setting the Weekly Timer>
5. Press the appropriate Set Time button a as 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)
J“ON” J“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)
⇔5 (41) ⇔6 (43) ⇔... ⇔89 (192) ⇔90 (194) ⇔No display.
(Available range: The range for the setting is 5°C (41°F) to 90°C (194°F). The actual
range over which the temperature can be controlled, however, will vary according to the
type of the connected unit.)
8. To clear the currently set values for the selected operation, press and quickly release the
Check (Clear) button 0once.
* 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.)
9. After making the appropriate settings at Steps 5, 6. and 7, press the CIR.WATER
button 4to lock in the values.
Note:
Your new entries will be cancelled if you press the Mode (Return) button 2before pressing
the CIR.WATER 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.
10. Repeat Steps 3 to 8 as necessary to fill as many of the available cells as you wish.
11. Press the mode (Return) button 2to return to the standard control screen and complete
the setting procedure.
12. 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 time setting
Shows the temperature setting
* Does not appear if temperature is not set.
Shows the selected operation (ON or OFF)
* Does not appear if operation is not set.
<How to View the Weekly 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 INITIAL SETTING (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.
<To Turn Off the Weekly Timer>
Press the Timer ON/OFF button 9so that “Timer Off” appears at 0.
<To Turn On the Weekly Timer>
Press the Timer ON/OFF button 9so that the “Timer Off” indication (at 0)
goes dark.
Timer Settings