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

– 11 –
2Using the Simple Timer
You can set the simple timer in any of three ways.
• Start time only : The unit starts when the set time has elapsed.
• Stop time only : The unit stops when the set time has elapsed.
• Start & stop times : The unit 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.)
<How to Set the Simple Timer>
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 4).
• “ON” timer: The unit will start operation when the specified number of hours
has elapsed.
• “OFF” timer:The unit 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 CIR.WATER button 4to lock in
the value.
Note:
Your new settings will be cancelled if you press the Mode (Return) button 2before
pressing the CIR.WATER 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 Settings
Action (ON or OFF)
* “— —” is displayed if there is
no setting.

– 12 –
<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.
<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.
Timer Settings
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
Example 2:
Start the timer, with OFF time is sooner than ON time
ON Setting: 5 hours
OFF Setting: 2 hours
At Timer Start
At 7 hours after
timer start
Display shows the timer’s ON
setting (hours remaining to ON).
Display changes to show the
timer’s OFF setting (hours
remaining to OFF).
The time displayed is OFF setting
(7 hours) – ON setting (3 hours) = 4
hours.
The unit goes off, and will remain
off until someone restarts it.
At 3 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
timer’s ON setting (hours
remaining to ON).
The time displayed is ON setting (5
hours) – OFF setting (2 hours) = 3
hours.
The unit comes on, and will
continue to run until someone turns
it off.
At 2 hours
after timer
start

– 13 –
3Using the Auto Off Timer
This timer begins countdown when the unit starts, and shuts the unit 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.)
<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 CIR.WATER button 4to lock in the setting.
Note:
Your entry 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 and return to
the standard control screen.
6. If the unit 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>
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.
Timer Settings
Timer Settings

– 14 –
<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 unit 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 unit. The timer value will appear at 7.

– 15 –
(3) 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.
<How to Lock the Buttons>
1. While holding down the CIR.WATER button 4, press and hold down the ON/
OFF button 1for 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.
<How to Unlock the Buttons>
1. While holding down the CIR.WATER button 4, press and hold down the ON/
OFF button 1for 2 seconds—so that the “Locked” indication disappears from the
screen (at 1).
Lock Indicator

– 16 –
(4) Other Indications
<Centrally Controlled>
will be 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>
When flashes continuously
Displayed when another unit connected to the outdoor unit is already operating in
a different operation mode.
Match with the operation mode of the other unit.
When operation mode switches after display blinked
Displayed when operation mode is restricted for each season by central controller,
etc.
Use another operation mode.
<Flashing “Check water circuit” display>
To reset “Check water circuit” display
When the CIR.WATER button is pressed twice, “Check water circuit” display
blinks.
Then the display goes off and is reset.
Note:
When two or more different types of unit are controlled, the water circuit
replacement period differs with the unit model. When the main unit water circuit
replacement period arrives, “Check water circuit” is displayed. When the Check
water circuit display goes off, the cumulative time is reset.
The water circuit replacement period cumulative time differs with the model.
Depending on the model, this display will not be appeared.
Indicates that the water circuit replacement is required.
Replace the water circuit.
Alternating
Display

– 17 –
<Flashing Error Codes>
If the ON lamp and error code are both flashing: This means that the unit 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 unit and call your dealer or servicer.
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.)
HOT WATER SUPPLY AIR TO WATER Models FLOW TEMP. CONTROLLER Models
ON lamp
(Flashing)
ON lamp
(Flashing)
HOT WATER SUPPLY
AIR TO WATER unit No.
Error Code
Refrigerant Address Error Code FLOW TEMP. CONTROLLER unit No.
Alternating Display
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.)
Example A Example B When the Check button is pressed:
Error Code Error Code

– 18 –
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 Item 2 Item 3 (Setting content)
1. Change Language
(“CHANGE
LANGUAGE”)
Language setting to display • Display in multiple languages is possible
2. Function limit
(“FUNCTION
SELECTION”)
(1) Operation function limit setting (operation lock) (“LOCKING
FUNCTION”)
• Setting the range of operation limit (operation lock)
(2) Operation mode skip setting (“SELECT MODE”) • Setting the use or non-use of each operation mode
(3) Temperature range limit setting (“LIMIT TEMP FUNCTION”) • Setting the temperature adjustable range (maximum, minimum)
3. Mode selection
(“MODE
SELECTION”)
(1) Remote controller main/sub setting (“CONTROLLER MAIN/
SUB”)
• Selecting main or sub remote controller
* When two remote controllers are connected to one group, one
controller must be set to sub.
(2) Use of clock setting (“CLOCK”) • Setting the use or non-use of clock function
(3) Timer function setting (“WEEKLY TIMER”) • Setting the timer type
(4) Contact number setting for error situation (“CALL.”) • Contact number display in case of error
• Setting the telephone number
(5) Temp off set setting (“TEMP OFF SET FUNCTION”) • Setting the use or non-use of setback amount setting
4. Display change
(“DISP MODE
SETTING”)
(1) Temperature display °C/°F setting (“TEMP MODE °C/°F”) • Setting the temperature unit (°C or °F) to display
(2) Water temperature display setting (“WATER TEMP DISP
SELECT”)
• Setting the use or non-use of the display of water temperature
6 Function Selection

– 19 –
[Function selection flowchart]
[1] Stop the unit to start remote controller function selection mode. J[2] Select from item 1. J[3] Select from item 2. J[4] Make the setting. (Details are specified in item 3) J
[5] Setting completed. J[6] Change the display to the normal one. (End)
Normal display (Display when
the unit is not running)
Item 1
Change Language
(“CHANGE LANGUAGE”)
Press the Gbutton.
Function limit
(“FUNCTION
SELECTION”)
Mode selection
(“MODE
SELECTION”)
Display change
(“DISP MODE
SETTING”)
(Hold down the E button and press the D button for two seconds.)
* The display cannot be changed during the test run and the
self diagnosis.
(Hold down the Ebutton and press the D
button for two seconds.)
* The remote controller records the setting
that is made in this way.
Remote Controller Function
Selection Mode
Item 2
Press the
Gbutton.
Press the
Gbutton.
Press the
Gbutton.
Press the
Ebutton.
Press the
E button.
Press the
Ebutton.
Press the
Dbutton.
Press the
Dbutton.
Press the
Dbutton.
Press the Gbutton.
Press the Gbutton.
Press the Gbutton.
Operation function limit setting (“LOCKING FUNCTION”)
Operation mode skip setting (“SELECT MODE”)
Temperature range limit setting (“LIMIT TEMP FUNCTION”)
Remote controller main/sub setting (“CONTROLLER MAIN/SUB”)
Use of clock setting (“CLOCK”)
Timer function setting (“WEEKLY TIMER”)
Contact number setting for error situation (“CALL.”)
Temp off set setting (“TEMP OFF SET FUNCTION”)
Temperature display ° C/ ° F setting (“TEMP MODE ° C/ ° F”)
Water temperature display setting (“WATER TEMP DISP SELECT”)
See [4]–1
Item 3
(Setting content)
See [4]–2. (1)
See [4]–2. (2)
See [4]–2. (3)
See [4]–3. (1)
See [4]–3. (2)
See [4]–3. (3)
See [4]–3. (4)
See [4]–3. (5)
See [4]–4. (1)
See [4]–4. (2)
NOTE
Timer operation stops when the display
for remote controller function selection is
changed to the normal one.
Dot display
The language that is selected in
CHANGE LANGUAGE mode
appears on this display. English is set
in this manual.
Press the
Ebutton.

– 20 –
[Detailed setting]
[4]–1. CHANGE LANGUAGE setting
The language that appears on the dot display can be selected.
• Press the [ MENU] button to change the language.
1English (GB), 2German (D), 3Spanish (E), 4Russian (RU), 5Italian (I),
6French (F), 7Swedish
[4]–2. Function limit
(1) Operation function limit setting (operation lock)
• To switch the setting, press the [ ON/OFF] button.
1no1 : Operation lock setting is made on all buttons other than the
[ON/OFF]button.
2no2 : Operation lock setting is made on all buttons.
3OFF (Initial setting value) : Operation lock setting is not made.
* To make the operation lock setting valid on the normal screen, it is
necessary to press buttons (Press and hold down the [CIR.WATER] and
[ ON/OFF] buttons at the same time for two seconds.) on the normal
screen after the above setting is made.
(2) Operation mode skip setting
After setting is changed, the operation mode can not be changed within the
changed range.
• To switch the following settings, press the [ ON/OFF] button.
1Heating mode : Sets the use or non-use of the Heating mode.
2Heating ECO mode : Sets the use or non-use of the Heating ECO
mode.
3Hot Water mode : Sets the use or non-use of the Hot Water
mode.
4Anti-freeze mode : Sets the use or non-use of the Anti-freeze
mode.
5Cooling mode : Sets the use or non-use of the Cooling mode.
6OFF (Initial setting value): Operation mode skip is not executed.
* When the setting, other than OFF, is made, the skip settings of the Heating,
Heating ECO, Hot Water, Anti-freeze, and Cooling modes are executed at
the same time.
* A mode that is not available on the unit to connect cannot be used even if
the setting is “AVAILABLE.”
(3) Temperature range limit setting
After this setting is made, the temperature can be changed within the set
range.
• To switch the setting, press the [ ON/OFF] button.
1LIMIT TEMP HEATING MODE:
The temperature range can be changed on heating mode.
This mode cannot be used with FLOW TEMP. CONTROLLER.
2LIMIT TEMP HOT WATER MODE:
The temperature range can be changed on hot water mode.
Heating mode can be used with FLOW TEMP. CONTROLLER.
3LIMIT TEMP ANTI-FREEZE MODE:
The temperature range can be changed on anti-freeze mode.
4LIMIT TEMP COOLING MODE:
The temperature range can be changed on cooling mode.
5OFF (Initial setting) : The temperature range limit is not active.
* When the setting, other than OFF, is made, the temperature range limit
setting on hot water, anti-freeze and cooling mode is made at the same
time. However, the range cannot be limited when the set temperature range
has not changed.
• To increase or decrease the temperature, press the [ TEMP. ( ) or
( )] button.
• To switch the upper limit setting and the lower limit setting, press the
[INITIAL SETTING ( )] button. The selected setting will flash and the
temperature can be set.
• Settable range
Heating/Hot Water mode: Lower limit: 20 ~ 90°C (68 ~ 194°F)
Upper limit: 90 ~ 20°C (194 ~ 68°F)
Anti-freeze mode : Lower limit : 5 ~ 45°C (41 ~ 113°F)
Upper limit: 45 ~ 5°C (113 ~ 41°F)
Cooling mode : Lower limit: 5 ~ 30°C (41 ~ 87°F)
Upper limit: 30 ~ 5°C (87 ~ 41°F)
* The settable range varies depending on the unit to connect.