Mitsubishi PAC-SF44SRA User manual

Mitsubishi Electric Building
Air Conditioning Control System
System remote controller Type PAC-SF44SRA
INSTRUCTION BOOK
Carefully read this book before use. It is recommended to safe keep this book for future reference.
ANWEISUNGSHANDBUCH
Vor Benutzung der Anlage dieses Buch sorgfältig durchlesen. Es wird empfohlen, dieses Buch zum Nachschlagen an einem
sicheren Ort aufzubewahren.
MANUEL D'UTILISATION
Lire attentivement le présent manuel avant toute utilisation et le conserver dans un endroit sûr pour pouvoir le consulter
ultérieurement.
LIBRO DE INSTRUCCIONES
Lea cuidadosamente este libro antes de usar el temporizador. Le recomendamos que guarde el libro en lugar seguro en previsión
de consultas Futuras.
LIBRETTO ISTRUZIONI
Leggere attentamente questo libretto prima dell'uso. Si raccomanda di tenerlo in un luogo sicuro per ogni futura necessitá.
INSTRUCTIEHANDLEIDING
Lees deze handleiding aandachtig door voordat u het apparaat in gebruik neemt. Het wordt aangeraden om deze handleiding
zorgvuldig te bewaren om later, indien nodig, te raadplegen.
GBD
FE
INL

1. Safety Precautions
■Always read these "Safety Precautions" before starting, and perform the installation work
correctly.
■The dangers and degree that could occur if handling is mistaken are ranked with the following
symbols.
■After reading this manual store it in a safe place together with the installation manual for future
reference.
When changing users, always give this manual and the installation manual to the new user.
2
CONTENTS
Page
1. Safety Precautions.....................................................................................................................2
2. Names and functions of each part.............................................................................................4
2-1. Appearance ......................................................................................................................4
2-2. Display sections................................................................................................................5
2-3. Operation section..............................................................................................................6
3. Operation...................................................................................................................................7
3-1. Collective Setting/Monitor Screen, Group Setting/Monitor Screen ...................................7
3-2. Various setting methods ...................................................................................................8
4. Troubleshooting.......................................................................................................................15
4-1. When "COLLECTIVE ON/OFF LAMP" and "ERROR CODE" are flickering...................15
4-2. When "group operation status display" and "error code" are flickering ..........................15
5. When an external input signal is input.....................................................................................16
5-1. Emergency stop mode....................................................................................................16
5-2. Prohibit input mode.........................................................................................................16
6. Initial settings...........................................................................................................................17
6-1. When this controller is master system ............................................................................17
6-1-1. Setting the group ..................................................................................................19
6-1-2. Setting the interlocked units .................................................................................23
6-1-3. Collective deletion ................................................................................................27
7. Error history monitor ................................................................................................................28
8. Setting the functions ................................................................................................................28
8-1. Using with master system controller ...............................................................................29
8-2. Setting local remote controller operation prohibit function from other controller.............29
8-3. Prohibiting operation of system controller other than this controller ...............................29
8-4. Changing set temperature display to "Fahrenheit display" .............................................29
9. Using the external input/output................................................................................................30
9-1. External signal input function..........................................................................................30
9-2. External signal output functions......................................................................................31
10. System limits............................................................................................................................32
11. Specifications...........................................................................................................................33
11-1. Product functions ............................................................................................................33
11-2. Main specifications .........................................................................................................34
WARNING When fatalities or serious injuries could result if handling is mistaken.
CAUTION When personal injury, or damage to house or assets could result if handling is mistaken.

WARNING
■Unit must not be installed by user.
Always contact your dealer or a specialist to install the unit. Improper installation by the user could result in
electric shocks or fires, etc.
■Check the installation state.
Always check that the unit is installed on a solid place where it will not fall off.
■Check the rated power supply.
An incorrect power supply could result in fires or unit trouble.
■Stop immediately when error occurs.
Continuing operation in an erroneous state could result in trouble, electric shocks or fires, etc. If any abnor-
mality is sensed (burning smell, etc.), always stop the operation, turn the power switch OFF, and contact
your dealer.
■Unit must not be moved and re-installed by user.
Improper installation by the user could result in electric shocks or fires, etc.
Always contact your dealer or a specialist when the unit must be moved.
■Unit must not be disposed by user.
Contact your dealer when the unit must be disposed of.
■Never modify or repair the unit.
Improper modifications or repairs could result in electric shocks or fires, etc. Always consult your dealer for
repairs.
■Stop operation if operation is inhibited with an error display or if a fault occurs.
Continuing operation could result in fires or faults.
Contact your dealer.
CAUTION
■Do not place hazardous objects near unit.
Do not install this unit where flammable gases could leak. If flammable gases leak and accumulate around
the unit, fires or explosions could result.
■Do not wash this unit with water.
Washing the unit with water could result in electric shocks or faults.
■Do not operate switches with wet hands.
Touching the unit with wet hands could result in electric shocks or faults.
■Do not use for special applications.
This product is intended for use with the Mitsubishi Electric building air conditioning control system. Do not
use for the control of other air conditioners or for other applications.
Failure to observe this could result in malfunctioning.
■Do not spray insecticide or flammable sprays onto unit.
Do not place flammable sprays, etc., near the unit or spray these directly onto the unit.
Doing so could result in fires or explosions.
■Do not use in special environments.
Using this product in environments containing a high level of oil (including machine oil), vapors or sulfuric
gases, etc., could result in a drop in performance or damage of parts.
■Do not press switches with pointed objects.
Pressing with pointed objects could result in electric shocks or faults.
■Observe the working temperature range.
Always observe the working temperature range. Serious faults could result if the unit is used outside the
working temperature range.
Refer to the specifications in the instruction manual for the working temperature range.
If not indicated in the instruction manual, the range is 0°C to 40°C (32°F to 104°F).
■Do not pull or twist the transmission cables
Doing so could result in fires or faults.
■Do not disassemble this unit.
Touching the internal PCBs, etc., is hazardous, and could result in fires or faults.
■Do not wipe this unit with benzene, thinner or chemical rags.
Using these matters could result in discoloration or faults. If the unit is heavily dirtied, wipe off with a cloth
wetted in diluted neutral detergent, and then wipe again with a dry cloth.
3
GB

2. Names and functions of each part
2-1. Appearance
• This controller has two operation modes. One is the [Collective Setting/Monitor Screen] for making
operations and settings for all air conditioners, and the [Group Setting/Monitor Screen] for making
operations and settings for air conditioners in each group. The items that can be operated and set
from the screen differ for each mode. Refer to section 3. Operation (page 7) for details.
1. COLLECTIVE/GROUP DISPLAY
Indicates which mode is selected:
COLLECTIVE: [Collective Setting/Monitor Screen]
GROUP: [Group Setting/Monitor Screen]
2. ON/OFF DISPLAY
[Collective Setting/Monitor Screen]
ON display: Displays when one or more groups are running.
(Does not display when only the interlocked units are running.)
OFF display: Displays when all groups are stopped.
(Displays even when the interlocked units are running.)
[Group Setting/Monitor Screen]
ON display: Displays when the selected group is running.
(Does not display when only the interlocked units are running.)
OFF display: Displays when the selected group is stopped.
(Displays even when the interlocked units are running.)
3. COLLECTIVE ON/OFF LAMP
ON: One or more group run
(Also ON when a sequential unit is running)
OFF: All groups stopped
Flicker: Malfunction occurred
4. COLLECTIVE ON/OFF SWITCH
If pressed when all groups are stopped, all groups will start running.
If pressed when one or more groups are running, all groups will stop.
If pressed when a registered air conditioner is malfunctioning, all groups will stop.
5. CAUTION
Remote control operations are not possible if "H0" or "H1" is displayed while the power is ON.
(Approx. five minutes.)
4
TEMP.
LOUVER
FAN SPEED AIR DIRECTION
VENTILATION
FILTER
LOCK
MODE
PROHIBIT MODE
GROUP
ON/OFF
PAC-SF44SRA
REMOTE CONTROLLER
SYSTEM
COL./GROUP
5
3
4
1
2
(approximately 5 minutes)
After turning the power on,wait until the "HO"or"H1"display goes out

2-2. Display sections
1. CENTRALIZED DISPLAY
This appears when operations from another system controller are prohibited.
2. ON/OFF DISPLAY
The operation status of the displayed group or all groups is displayed.
3. OPERATION MODE DISPLAY
The current operation mode is displayed.
4. GROUP NUMBER DISPLAY
The group number selected on the Group Setting/Monitor Screen is displayed.
5. GROUP OPERATION STATUS DISPLAY
ON: Run
OFF: Stop
Flicker: Malfunction
6. SET TEMPERATURE DISPLAY
The selected set temperature is displayed.
7. AIR DIRECTION DISPLAY
The blow off air direction is indicated with the "s" mark.
8. FAN SPEED DISPLAY
The selected fan speed is displayed.
9. LOUVER DISPLAY
The operation of the swing louver is displayed. This does not appear when stopped.
10. VENTILATION DISPLAY
This appears during ventilation operation.
11. PROHIBIT DISPLAY
This appears when operation of the local remote controller is prohibited by this controller.
12. MODE LOCK DISPLAY
This appears when switching to a specific operation mode is limited.
13. FILTER SIGN DISPLAY
This flickers when the filter’s periodic cleaning interval is reached.
14. DISPLAY
This appears while the power is ON.
15. ERROR CODE DISPLAY
This flickers and displays an error code (4-digit) when an error is generated.
Examples of actual displays on each unit's Group Setting/Monitor Screen.
5
GB

2-3. Operation section
1. ON/OFF SWITCH
When the [Collective Setting/Monitor Screen] is displayed, all groups can be collectively started
and stopped.
When the [Group Setting/Monitor Screen] is displayed, the selected group can be started and
stopped.
2. COL./GROUP SWITCH
Press this switch to switch between the [Collective Setting/Monitor Screen] and [Group
Setting/Monitor Screen].
3. GROUP SWITCH
Press this to call the required group screen when making various settings. (This can be used
only on the [Group Setting/Monitor Screen].)
4. MODE SWITCH
Use this switch to switch between cooling, dry, ventilation, automatic and heating modes.
For the LOSSNAY, use this to switch between automatic ventilation, normal ventilation and
heat exchanger ventilation.
5. FAN SPEED SWITCH
Use this switch to change the fan speed.
6. LOUVER SWITCH
Use this switch to set the air direction to left or right, or to stop.
7. TEMP. SWITCH
Use this switch to set the room temperature in 1(33.8)deg increments.
8. PROHIBIT SWITCH
Use this switch to prohibit operations with the local remote controller. The items that can be
prohibited are on/off, operation mode, set temperature and filter reset. (This can be operated
only when the controller is set to operation prohibit transmission valid.)
9. MODE LOCK SWITCH
Use this switch to limit switching of the controllers and local remote controller's operation
modes according to the season.
10. FILTER SWITCH
Press this switch to reset the filter sign.
11. AIR DIRECTION SWITCH
Press this switch to adjust the air direction up and down.
12. VENTILATION SWITCH
Use this switch to change the interlocked unit's ON/OFF mode and fan speed.
6
9

3. Operation
3-1. Collective Setting/Monitor Screen, Group Setting/Monitor Screen
• [Collective Setting/Monitor Screen]
• All groups controlled by this controller can be operated collectively.
• When any of the following operation switches is pressed for more than two seconds, each
default value will appear, and all air conditioners will be set with the next operation.
MODE, FAN SPEED, TEMP., AIR DIRECTION, LOUVER
• The operation details will turn OFF if there is no operation for ten minutes.
• [Group Setting/Monitor Screen]
• Various operations can be performed for the selected group.
• When the COLLECTIVE ON/OFF switch is pressed, all groups will turn ON or OFF.
• If there is no operation for ten minutes, the [Collective Setting/Monitor Screen] will appear.
1. Some functions may not be operable depending on the air conditioner model.
2. Refer to "3-2. Various setting methods" on page 8 for more details.
7
GB
[Collective Setting/Monitor Screen]
Switches when the COL./GROUP switch
is pressed.
[Group Setting/Monitor Screen]

8
3-2. Various setting methods
(1) ON/OFF
[Collective Setting/Monitor Screen]
1. The air conditioners and LOSSNAY for all groups will either turn ON or OFF when the
ON/OFF switch is pressed.
2. Pressing the COLLECTIVE ON/OFF switch has the same effect as pressing the ON/OFF
switch.
[Group Setting/Monitor Screen]
1. The air conditioner or LOSSNAY for the selected group will either turn ON or OFF when the
ON/OFF switch is pressed.
2. When the COLLECTIVE ON/OFF switch is pressed, the air conditioners and LOSSNAY for
all groups will turn ON or OFF.
If ON/OFF with other system controller's has been prohibited, the ON/OFF and
COLLECTIVE ON/OFF switches will not function. [- CENTRALIZED -] will flicker
if operated when prohibited.
(2) Operation mode
[Collective Setting/Monitor Screen]
1. Each time the MODE switch is pressed, the mode will change in the order of
If any of the above modes is not available in the registered unit, the operation mode will not
display.
Even if the operation mode is set collectively, the mode will not be set in a group that does not
have that operation mode.
[Group Setting/Monitor Screen]
1. Each time the MODE switch is pressed, the
mode will change in the order shown on the right.
The modes shown in brackets are not displayed if the indoor units registered in each group are
not provided with that operation mode.
In groups controlling LOSSNAY units, the mode
will change in the order shown on the right each
time the MODE switch is pressed.
1. If the operation changeover operation has been prohibited with another system
controller, the MODE switch will not function. [- CENTRALIZED -] will appear if
operated when prohibited.
2. If changeover to a mode is limited by this controller and another controller, that mode
will not display.
(Refer to (9) Operation mode changeover limit.)
No display
(COOL) (FAN) (AUTO)
AUTO
(HEAT) (AUTO VENT)
BY-PASS
(NORMAL VENT)
HEATEX.
(HEAT EXCHANGE
VENT)
(DRY)
(COOL) (FAN) (AUTO) (HEAT)(DRY)
AUTO
(AUTO VENT)
BY-PASS
(NORMAL VENT)
HEATEX.
(HEAT EXCHANGE
VENT)

9
GB
2-step model
3-step model
4-step model
Air conditioner
Medium temperature air conditioner
Cool/Dry
Heat
Auto (cool/heat)
* The temperature adjustment cannot be set for fan operation.
19 to 30oC/66.2 to 86oF
17 to 28oC/62.6 to 82.4oF
19 to 28oC/66.2 to 82.4oF
14 to 30oC/57.2 to 86
oF
14 (17) to 28oC/57.2 (62.6) to 82.4oF
14 (17) to 28oC/57.2 (62.6) to 82.4oF
(3) Fan speed adjustment
[Collective Setting/Monitor Screen]
1. The display will change as shown on the right each time
the FAN SPEED switch is pressed.
When executed collectively, the fan speed
will be set in "four steps" regardless of the
model.
[Group Setting/Monitor Screen]
1. Each time the FAN SPEED switch is pressed, the display will change as shown on the right
from the currently displayed fan speed state.
Changeover of the fan speed differs according to the model being controlled.
The fan speed cannot be changed for models that do not have fan speed adjustment
provided in the indoor unit.
(“ ” will flicker if operated.)
(4) Temperature adjustment
[Collective Setting/Monitor Screen]
1. When the TEMP. or switch is pressed once, 19°C (66.2°F) will appear on the
screen. The set temperature will change in 1 (33.8) deg increments each time the switch is
pressed.
If the switch is held down, the temperature will change continuously in 1 (33.8) deg
increments.
The temperature adjustment range for the collective setting is 19 to 28°C (66.2 to 82.4°F) for
all operation modes.
The room temperature cannot be adjusted
when controlling only the LOSSNAY.
[Group Setting/Monitor Screen]
1. The set temperature will change in 1(33.8)deg increments each time the TEMP. or
switch is pressed.
If the switch is held down, the temperature will change continuously in 1(33.8)deg increments.
The room temperature adjustment range differs according to the air conditioner being
controlled. The room temperature cannot be changed for groups controlling only LOSSNAY.
([TEMP] and [°C] will flicker if operated.)
If adjustment of the room temperature has been prohibited with another system controller,
the TEMP. and switches will not function.
[- CENTRALIZED -] will flicker if
operated when prohibited.

(5) LOUVER [Collective Setting/Monitor Screen, Group Setting/Monitor Screen]
1. Start/stop will be repeated each time the LOUVER switch is pressed, and the display will
change as shown below.
1. When operating the louvers collectively, “LOUVER ON” will appear regardless of the
model.
2. If the indoor unit in the group setting is not provided with the louver operation, " "
will flicker.
(6) Air Direction
[Collective Setting/Monitor Screen]
1. The display will change as shown below each time the AIR DIRECTION switch is pressed.
When the wind direction is changed collectively, the vane permitted operation and swing
permitted operation are used regardless of the model. The air direction cannot be changed
when controlling only the LOSSNAY.
[Group Setting/Monitor Screen]
1. Each time the AIR DIRECTION
switch is pressed, the display will
change as shown on the right
from the currently displayed air
direction state.
T
he air direction changeover operation will differ according to the model being controlled.
The air direction cannot be changed for groups controlling only the LOSSNAY, and for
models that do not have a vane. (will flicker if operated.)
(7) Interlock unit ON/OFF
[Collective Setting/Monitor Screen]
1. The display will change as shown below each time the VENTILATION switch is pressed.
When starting and stopping interlocked units collectively, "INTERLOCK UNIT ON" will turn ON
regardless of the presence of interlocked units.
Interlocked units cannot be started or stopped when controlling only independent indoor units
or independent LOSSNAY units.
[Group Setting/Monitor Screen]
1. Each time the VENTILATION switch is pressed, the display will change as shown below
from the currently displayed interlocked unit ON/OFF state.
The interlocked unit cannot be started or stopped if the group does not have interlocked
units. ( will flicker if operated.)
10
No display
(OFF)
No display
(OFF)

(8) Local remote controller operation prohibit setting
[Collective Setting/Monitor Screen]
1. Operations with all local remote controllers controlled with this controller can be prohibited.
[Group Setting/Monitor Screen]
1. Operations with the local remote controller for the selected group can be prohibited.
When this controller's SW3-5 operation prohibit range setting changeover has been set
to "ON (including system controller)", operations of the other system controllers can be
prohibited.
Setting method: Set on the [Collective Setting/Monitor Screen] or [Group Setting/Monitor Screen].
1. When the PROHIBIT switch is pressed, [ PROHIBIT , ON/OFF, MODE, TEMP., FILTER ]
will appear. Items that have already been prohibited will turn ON, and the permitted items will
flicker. All items will flicker on the [Collective Setting/Monitor Screen].
If the group is controlling LOSSNAY, [MODE, TEMP. ] will not appear.
2. Set the items to be prohibited or permitted with local remote controller operations.
• To prohibit or permit ON/OFF operations :
Press the ON/OFF switch. The ON/OFF display will change when pressed.
•
To prohibit or permit operation mode changeover :
Press the MODE switch. The "MODE" display will change when pressed.
•
To prohibit or permit room temperature adjustment :
Press the TEMP. or switch.
The "TEMP" display will change when pressed.
•
To prohibit or permit filter resetting operations :
Press the FILTER switch. The "FILTER" display will change when pressed.
[Changes in display of each item] Flicker (Not set) →ON (Prohibit) →OFF (Permit)
When each item's switch is pressed, the related display will change as shown above from the
current display state.
[Meaning of displays]
3. The prohibited or permitted item will be set when the PROHIBIT switch is pressed, and local
remote controller operation of the items that are ON will be prohibited. The operation will be
permitted if the item is OFF or flickering (not set).
(*1) On the [Collective Setting/Monitor Screen], if all four items are flickering in step 3 above (nothing is
being operated), it does not mean that all operations are permitted. Instead this means that the previous set-
tings will be applied.
1. This function can be set only when this controller's SW-4 operation prohibit setting
changeover is set to "ON (Permit)". Settings cannot be made when set to prohibited.
If the function is used when the setting is prohibited, [- CENTRALIZED -], PROHIBIT ,
O N/OFF, MODE, TEMP., FILTER] will flicker.
2. The operation mode changeover and room temperature adjustment operations can-
not be prohibited for LOSSNAY groups.
11
GB
Display ON OFF or flickering (*1)
ON/OFF Local remote controller ON/OFF operation prohibited Local remote controller ON/OFF operation permitted
MODE
Local remote controller operation mode changeover prohibited Local remote controller operation mode changeover permitted
TEMP. Local remote controller room temperature adjustment prohibited Local remote controller room temperature adjustment permitted
FILTER Local remote controller filter resetting prohibited Local remote controller filter resetting permitted

(9) Operation mode changeover limit (season changing)
Changeover to specific operation modes with this controller or the local remote controller for all
groups can be limited.
For example, the mode selection can be limited according to the season.
Cooling mode limit (winter), heating mode limit (summer), cooling + heating mode limit (between
seasons)
Setting methods: Set with the [Collective Setting/Monitor screen] or [Group Setting/Monitor screen].
1. Hold down the MODE LOCK switch for two or more seconds.
2. When the MODE LOCK switch is pressed next, the mode to be prohibited will light in the
following order.
When “NO COOL” is selected : The cooling, dry or automatic modes cannot be selected
with the MODE switch.
When “NO HEAT” is selected : The heating or automatic modes cannot be selected
with the MODE switch.
When “NO COOL HEAT” is selected : The cooling, dry, heating or automatic modes cannot be
selected with the MODE switch. (Only fan can be used.)
When no display (no limits) is selected : The limits will be cancelled.
1.
This function can be used only when SW3-8 is set to ON.
2. Note that this function cannot be used with some indoor units. In this case,
changeover of the operation mode cannot be limited with the local remote controller.
(10) Time setting mode
• The current time of the system controller or remote controller, having a time setting function,
can be set collectively. (There are some remote controllers that cannot be set. This controller
does not have a clock function.)
[Setting method and display] Set the time from the Collective Setting/Monitor Screen.
Hold down the GROUP and FILTER switches simultaneously for two or more seconds.
12
No display
(no limits) MODE LOCK
+
NO COOL
MODE LOCK
+
NO HEAT
MODE LOCK
+
NO COOL HEAT

1. Selecting the setting item
Select the setting item with the GROUP / switches or the TEMP. /
switches.
• Day setting : GROUP / switches
• Time setting : TEMP. / switches
2. Setting the day (Select day setting in step 1.)
The day setting No. displayed at the group No. display section will change each time the
GROUP switch is pressed.
“SU, MO, TU, WE, TH, FR, SA” will appear at the group operation status display section accord-
ing to the day setting No.
• The displays will change in reverse when the GROUP switch is pressed.
3. Setting the time (Select time setting in step 1.)
• The time setting will advance in one-minute increments on the error code display section each
time the TEMP. switch is pressed. If the switch is held down, the time advance method
will change in the order of one-minute increments, ten-minute increments and one-hour
increments.
• The set time will return in one-minute increments each time the TEMP. switch is
pressed. If the switch is held down, the time return method will change in the order of
one-minute increments, ten-minute increments and one-hour increments.
4. Fixing the setting
The set details will be fixed when the FAN SPEED switch is pressed.
(The day setting No. and time setting display will change to stable lights.)
When the FAN SPEED switch is pressed again, each remote control’s time will be set. (The
clock mark “ ” will disappear.)
• The seconds are reset to zero when the FAN SPEED switch is pressed.
5. Cancelling the time setting
Hold down the GROUP and FILTER switches for two or more seconds.
• The setting screen will return to the Collective Setting/Monitor Screen.
• The details set before the setting was fixed will be erased.
If no operations are made on this screen for ten minutes, the display will automatically
switch to the Collective Setting/Monitor screen. (The details being set will be deleted.)
13
GB
01: Sunday (SU), 02: Monday (MO), 03: Tuesday (TU), 04: Wednesday (WE), 05: Thursday (TH),
06: Friday (FR), 07: Saturday (SA)

(11) Set temperature range limit mode
If the remote control has a set temperature range limit mode function, the set temperature
adjustment range can be collectively set for the [COOL/DRY] and [HEAT] modes.
[Setting method and display]
Use the [Collective Setting/Monitor Screen]. (Make sure that all units are stopped before
starting.)
Hold down the TEMP and switches simultaneously for two or more seconds.
1. Setting the set temperature adjustment range
[COOL/DRY] mode
The lower limit temperature will change by 1°C each time the TEMP or switch is
pressed.
[Lower limit temperature adjustment range]: 19°C to 30°C (The upper limit temperature is
fixed to 30°C. Only the lower limit temperature can be changed.)
[HEAT] mode
The upper limit temperature will change by 1°C each time the TEMP or switch is
pressed.
[Upper limit temperature adjustment range]: 17°C to 28°C (The lower limit temperature is
fixed to 17°C. Only the upper limit temperature can be changed.)
2. Fixing the set details
The set details will be fixed when the FAN SPEED switch is pressed. (The mode display will
change to a stable light.)
3. Cancelling the set temperature range limit mode
Hold down the TEMP and switches simultaneously for two or more seconds.
The Collective Setting/Monitor Screen will appear.
1. The operation mode will change to ventilation after the set temperature range limit is
set, so the operation mode must be changed to the previous mode.
2.
If no operations are made on this screen for ten minutes, the display will automatically
switch to the Collective Setting/Monitor Screen. (The details being set will be deleted.)
(12) Filter sign reset
The FILTER flickers, when the filter needs cleaning.
[Collective Setting/Monitor Screen, Group Setting/Monitor Screen]
When the FILTER switch is pressed two times successively after cleaning the filter, the display
turned OFF and is reset.
If the filter sign reset operation has been prohibited with another system controller, the
FILTER switch will not function. [- CENTRALIZED -] will flicker if operated when
prohibited.
14
Temperature selection for cooling/dry mode Temperature selection for heating mode
Change by pressing
the MODE switch.

4. Troubleshooting
4-1. When "COLLECTIVE ON/OFF LAMP" and "ERROR
CODE" are flickering
• The air conditioner is stopped because a problem has occurred and operation cannot be
continued.
• Check the address of the unit where the error is occurring and the error code, and call your
nearest MITSUBISHI ELECTRIC supplier or dealer.
1. If an error occurs while the [Collective Setting/Monitor Screen] is displayed, the details of the
error for the group containing the first problem will appear.
2. If the error occurs while the [Group Setting/Monitor Screen] is displayed, the error will display
only when the currently selected group has the error.
3. If an error occurs in several groups, the operation status display for each group having an
error will flicker, so check the details of the error with "Checking errors in a different group".
• Checking errors in a different group
Press the GROUP switch to select the group with the error, and check the details of the
error.
1. If an error occurs in a group other than that displayed on the [Group Setting/Monitor
Screen], the COLLECTIVE ON/OFF lamp and the group operation status of the
group with the error will flicker.
2. The details of past errors can be confirmed. Refer to section "7. Error history monitor"
for details.
4-2. When "group operation status display" and "error code"
are flickering
• The air conditioner will continue operation, but there may be a problem.
• Check the error code and contact your dealer or service center.
15
GB
The group No. of the faulty unit flickers.
The operation status for each group containing
the faulty unit is displayed.
The COLLECTIVE ON/OFF lamp flickers.
The address No. of the faulty unit and the attributes
alternately flicker and display.
The error code flickers and displays. (4-digit)
The error code flickers. (4-digit)
The operation status for each group containing
the faulty unit is displayed.

1. If an error occurs while the [Collective Setting/Monitor Screen] is displayed, the details of the
error for the group containing the first problem will appear.
2. If the error occurs while the [Group Setting/Monitor Screen] is displayed, the error will display
only when the currently selected group has the error.
3. If an error occurs in several groups, the operation status display for each group having an
error will flicker, so check the details of the error with "Checking errors in a different group".
If the error is occurring in a group other than that displayed on the [Group
Setting/Monitor Screen], only the group operation status display for the group with the
error will flicker.
5. When an external input signal is input
5-1. Emergency stop mode
• If an emergency stop input is input in the external input interface, all air conditioners and
LOSSNAY units being controlled will turn OFF.
This controller, slave system controller and local remote control operations will be prohibited
until the emergency stop input is cancelled.
• When the emergency stop is cancelled, the state before it was input will be recovered.
(Excluding the ON/OFF state.)
(The external input adapter used for emergency stop input is not enclosed with this controller.)
5-2. Prohibit input mode
• When prohibit input is input to the external input interface, the on/off, operation mode, setting
temperature and filter reset operations using the manual remote control being controlled will be
prohibited.
• When permit is input, the local remote control operation prohibit will be cancelled.
16
OFF will flicker.
[-CENTRALIZED-] will flicker.
PROHIBIT flickers only for the
[Collective Setting/Monitor screen].

6. Initial settings
• When connecting multiple system controllers, designate the system controller with many
functions as the "master", and set the system controllers with few functions as the "slaves".
(Refer to section 8. Setting the functions, "8-1 Using with master system controller" for details
on the "master/slave" settings.)
• If this controller is controlled by the master system controller, carry out the initial settings with
the master system controller. In this case, this controller will use the slave settings, and does
not require initial settings.
6-1. When this controller is master system
The initial settings include the following items:
• Group setting • Interlocked unit setting • Collective deletion
Open the Initial Setting Mode Screen to make these settings.
(1) The following display will appear when the power to this controller is turned ON.
(2) When group setting information is already set
(3) When there is no group setting information, or when changing the group setting
information:
Hold down the FILTER and LOUVER switches simultaneously for two or more
seconds while "H0" is flickering in step 1, or on the Group Setting/Monitor screen or
Collective Setting/Monitor screen. (When pressing the switches simultaneously, if the
LOUVER switch is pressed first, the Default Setting Mode screen will not open.)
When opening each screen from step 2, if there is an error in any group, the switch
operation will be invalid.
17
GB
ON/OFF
When system startup communication is completed,
the Group Setting/Monitor Screen will open.
During system startup communication,
"H1" will blink at the group No. display section

This controller's own address will flicker for two seconds.
Carry out steps 6-1-1 to 6-1-2 from the state shown above.
(4) Cancel the initial setting mode.
•After setting the group and the interlocked unit, hold down the FILTER and LOUVER
switches simultaneously for two or more seconds.
•Save the group setting information and interlocked unit setting information, etc., with this
step, and then carry out system startup communication. The Group Setting/Monitor Screen
will open when completed. (Refer to step (2))
Do not turn the power OFF during system startup communication (while "H1" is flickering).
(The group setting information, etc., will not be saved in the memory if the power is
turned OFF.)
18

6-1-1. Setting the group
•Register the indoor unit, LOSSNAY, slave system controller and local remote controller for
each group. (Register the LOSSNAY to be interlocked with the indoor unit using the
interlocked unit setting.)
•If the group setting information has already been set and no operations are made on this
screen for ten minutes, the display will automatically switch to the Collective Setting/Monitor
screen. (The details being set will be deleted.)
1. Select the group
(1) The group operation status display (( ) in following example) will move in order each time
the GROUP switch is pressed, and the group No. display section will also change.
The display will move in reverse when the GROUP switch is pressed.
(2) After the group is selected, if a unit is registered in the group the minimum address No. unit
will appear. The attributes for that group will appear after two seconds.
19
GB
1. Select the group
Select the group in which the unit is to be registered.
2. Select the unit
Select the unit, etc., to be registered in the group selected in step 1.
3. Registering the unit into a group
4. Deleting a unit from a group
5. Searching for registered units
Go to step 6-1 (4) or 6-1-2.
Displayed details
{
Set temperature display section ... Address No.
Group No. display section ............ Address No. attributes

Example) When groups 1 and 2 are not registered, and the address 005 indoor unit is registered
in group 3
2. Selecting the unit
(1) Select the unit to be registered in the group selected in step 1.
•The address No. at the set temperature display section will change in order each time the
TEMP. switch is pressed. (If held down for three seconds or more, the skip function
will activate when carrying over.)
•The numbers will appear in reverse order when the TEMP. switch is pressed.
(2) When registered unit is selected
•If the selected unit is already registered in any of the 50 groups controlled by this controller,
the following type of display will appear.
Example) When unit 011 is called out with group 3
20
Address No. setting range
Indoor unit, LOSSNAY : 001 to 050
Local remote controller
Slave system controller : 000, 201 to 250
: 101 to 200
Set temperature display section : Address No. will appear
Group operation status display flickers
This indicates that the unit is already
registered in "group 23"