Mitsubishi Electric Central Controller G-50A User manual

Central Controller
Model: G-50A
Mitsubishi Electric Air-conditioner Network System
Instruction Book
Contents
1. Safety ……………………………………………
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1
2.
Product feature
3. Function
4. User operation
5. Initial setting
6. Maintenance
7. External input / output
3-1 Specification
3-2 Display screen
4-1 Operation condition monitor
4-2 Operation setting
4-4 Malfunction
…………
4-5 Current time setting
5-2 M-NET address setting
5-3 Function setting
5-4 Group configuration setting
5-5 Interlocked operation setting
6-1 Refrigerant system monitor
6-2 Malfunction log monitor
7-2 External output function
Before using the controller, please read this Instruction Book carefully to ensure
correct operation. Store this Instruction Book in a location that is easy to find.
7-1
External input function
5-6 Group name setting
5-7 User setting
5-8 IP address setting
5-9 Initial setting tools connection function
4-3 Timer operation
4-2-1 Group operation setting
4-2-2 Collective operation setting
2
4
4
8
10
11
12
12
16
19
23
24
25
25
25
26
27
29
31
34
35
35
36
36
37
38
38
39
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Appendix 2 : User operation(adridged)
Appendix 1 : Initial setting(adridged)
40
42
5-1
Shifting to initial setting menu
G-50A
ON/OFF
CENTRAL CONTROLLER

-1-
1. SAFETY
Please take a moment to review these safety precautions. They are provided for your protection and to prevent
damage to the controller.
This safety information applies to all operators and service personnal.
After you have read this manual, always observe the procedures described in the explanations and store it with
the installation manual in a location that is easy to find. If the controller is going to be operated by another per-
son, make sure that this manual is given to them.
Symbols and Terms
Specific Precautions
WARNING
CAUTION
Statements identify condition or practices that could result in personal injury or loss of life.
Statements identify condition or practices that could result in damage to the controller or other property.
• Do not install the controller in a place where inflam-
mable gas could leak.
If gas leaks and collects around the controller, it may cause
a fire or explosion.
• Do not wash the controller with water.
It may cause an electric shock or malfunction.
• Do not touch the switch with wet hands.
It may cause an electric shock.
• Do not use the controller for special applications.
This product is designed for use with the MITSUBISHI
ELECTRIC BUILDING AIR CONDITIONING CONTROL
SYSTEM. Do not use the system for other air condition man-
agement operation or applications. It may cause malfunc-
tions.
• Do not apply insecticide or flammable sprays to the
controller.
Do not place flammable spray near the controller and make
sure it does not blow directly on the controller as this may
cause in fire.
• Do not use the controller in special environments.
The performance may be reduce or parts may be damaged
if the controller is used in locations subject to large quanti-
ties of oil (including machine oil), steam, sulfide gas.
• Do not touch the switches with sharp objects.
It may cause an electric shock or malfunction.
• Operate the controller within the specified temperature
range.
Observe the specified temperature range when operating
the controller. If the controller is used outside the specified
temperature range, it may cause serious damage. Be sure to
check the operation temperature range in the operation
manual.
WARNING
• Ask your dealer or technical representative to install.
If incorrect inatallation is done by a customer, it may cause
an electric shock, fire, etc.
• Make sure that the controller is connected to a rated
power supply.
If the controller is not connected to a rated power supply, it
may cause a fire or damage to the controller.
• Never remove the cover during operation.
Touching the charged parts of the controller may cause
severe burns or other personal injury.
• Stop the operation if any malfunction occurs.
If malfunction occurs (burning smell, etc.) stop the operation
and turn off the power supply. Contact your dealer or techni-
cal representative immediately. If the controller continues to
operate after a malfunction occurs, this may cause damage,
electric shock or fire.
• Do not remodel or repair by yourself.
If the controller is redesigned or repair is not correct, it may
cause an electric shock, fire, etc.
Consult your dealer if repair is necessary.
• Stop the operation immediately and notify the your deal-
er if an error code is displayed or malfunction occurs.
Fire or damage may be caused if the controller is operated
in this condition .
CAUTION
• Do not move and re-install the controller by yourself.
If installation is incorrect, it may cause an electric shock,
fire,etc. Ask your dealer or technical representative.
• Contact your dealer if the controller will not be used any
more or will be scrapped.
• Securely install in a place which can withstand the
weight of the controller.
If it is not enough, the controller may fall and cause an
injury.

-2-
2. Product Features
[ 1 ] User operating function
The central controller is capable of controlling up to 50 air conditioner units. It supports the following operating
1. Virtually almost functions operated by local remote controller are supported.
2. Local remote control operation can be prohibited for specific functions.
3. Collectively setting
1. The weekly schedule enables four different schedule patterns to be set weekly per group. (P1-P4)
1. ON/OFF/MALFUNCTION status can be monitored by group or by unit.
1. The unit address where the malfunction occurred, the error code and address of the unit that detected
2. Pressing the reset key stops all the units connected to the same group, refrigerant system or linked group to the
the malfunction are displayed on the malfunction monitor screen.
unit where the malfunction occurred, all of these are reset.
2. The groups managed by the central controller may be displayed all together by group number or group name
3. When displaying all groups at once, individual groups can be turned ON or OFF by designating them by the
indicator .
(first three characters). Collective display of all unit address is also supported.
2. The respective daily patterns enable the setting of three different ON times (three prohibition times) and three
3. Easy setting
The central controller can be used to control the indoor units in specific group ON or OFF, select the operating
ventilation unit), select the fan speed, select the air direction (4 direction and swing operation), select the ventil-
ation mode (OFF, LOW speed, or HIGH speed), select TIMER MODE and select the temperature setting.
In addition, room temperature can be displayed at the unit of each group upon request.
Access to specific control functions, such as ON/OFF operation, mode selection ,temperature setting and filter
sign reset operation can be prohibited for the local remote controls collectively or per group.
Operation setting can be performs collectively or per group.
Of these, three patterns are to set ON/OFF schedule and remaining one pattern is to set the pattern to prohibit op-
eration of the local remote controller.
different OFF times (three permission times).
In addition, it is possible to set ON time only (prohibition time only) and OFF time only (permission time only).
Daily operation patterns and weekly schedules for one group can easily be copied to the other groups.
4. Timer automatic recovery operation when recovering from a power down is supported.
Four patterns (daily patterns) mentioned above enable the setting of individual schedule times for every group.
(See 5-5 "User setting")
mode (COOL, DRY, FAN, AUTO and HEAT) for the indoor unit or HEAT RECOVERY, BY-PASS, AUTO for the
(1) Operation
(2) Weekly Schedule
(3) Operating status monitor
(4) Malfunction monitor
function.

-3-
The central controller is supplied power from the PAC-SC50KUA Power Supply Unit via the M-NET transmission line and
DC power line. The DC power between the PAC-SC50KUA Power Supply Unit and the central controller should be 10m
or less. The central controller allows to be connected to M-NET transmission line at any position. (M-NET transmission
line is the central control line which connects TB7 terminal of the outdoor unit)
[ 2 ] System configuration setup and maintenance function
[ 3 ] Other
1. Registration can be made for the indoor units, local remote controllers and slave system controllers in the same
2. Group name may be specified. ( Names may include alphanumeric characters.)
3. Group name may be copied.
4. Setting of group configuration and specifying the group name may be performed as long as power is being supplied
5. System configuration data setting in the central controller can be deleted at once if necessary when replacing cir-
to the central controller. This mean that setting can be performed before the central controller is installed at
the site, before installation of individual units is completed or while the power supply to some units is cut off.
cuits wired board, etc.
All unit address (indoor, outdoor, etc.) can be displayed for individual refrigerant system on the refrigerant system
monitor screen. This information is useful for checking the installation, such as address setting, transmission line
connection and power supply connection.
Setting can be performed for indoor units interlocked with a ventilation unit.
If even one of the indoor units interlocked with ventilation have started to operate, the ventilation will be activated.
1. A log of the last 64 malfunction massage, in the order in which they occurred, can be monitored.
2. The data and time the malfunction occurred, the address of unit where it occurred, the error code and the ad-
3. All malfunction logged in the memory of the central controller and indoor unit can be reset at once.
dress of unit that detected the malfunction are displayed.
Displays normal operation/all OFF/malfunction status for the entire system.
This switch allows turning all of the unit in the system ON or OFF at once.
The combined maximum distance between the outdoor units and the central controller, and between the outdoor units
and farthest indoor units connected to the same refrigerant system or their remote controller, may be extended up
500 meters.
Therefore, even if the total distance is made longer by installing the outdoor units all in row, there will be no problem
so long as the above maximum total distance limitation is not exceeded.
(Normal operation/all OFF/malfunction status is indicated by the lamp being lit, not lit or blinking respectively)
group.
And also registration can be made for the ventilation such as OA processing unit.
(1) Setup for system configuration
(2) Refrigerant system monitor
(3) Interlocked group setting
(4) Malfunction log monitor
(1) Overall statues display lamp
(2) Collective ON/OFF switch
(3) Power supply wiring
(4) M-NET transmission line

-4-
Cool (Dry) operation : 19 30 ˚C / 67 87 ˚F
Heat operation : 17 28 ˚C / 63 83 ˚F
Auto operation : 19 28 ˚C / 67 83 ˚F
DC24V,0.02A(Maximum loading)
Power received from PAC-SC50KUA Power Supply Unit via M-NET transmission line.
DC12V,0.2A(Maximum loading)
Power is received from the PAC-SC50KUA Power Supply Unit via the DC power line.
Indoor unit or independent OA processing unit or LOSSNAY
: 50 units maximum (50 groups maximum)
Number of units (indoor or independent OA processing unit or LOSSNAY) in one group
: 1-16 units
*Note
register to the same group.
Indoor unit, independent OA processing unit and LOSSNAY can not
Number of remote controllers in one group
Number of system controllers in one group
Number of indoor units interlocked with one OA processing unit or LOSSNAY
: 1-2
: 0-4 (including the number of remote controller in one group)
: 0-3 for groups which have one remote controller.
: 0-16 (some types of OA processing unit can only be operated when inter-
locked to a maximum of 9 units)
3. Functions
3-1 Specifications
Item
Source power requirement
Environmental condition Temperature
Humidity
120(H) 300(W) 80[*19](D)
4-3/4(H) 11-13/16(W) 3-1/8[*3/4](D)
1.0
2-1/4
Kg
lb
mm
in
Dimensions
Weight
System condition
Number of control unit
User operating function
Operation Fan speed
Air direction
and swing
operation
Temperature
setting
ON/OFF
Operation
mode *1
*3
*1
*1
The ON/OFF operation can be performed as a collective or per group.
The switch operation for the operation mode setting can be performed as a collective
or per group.
[ Selectable operation mode for the indoor unit ]
[ Selectable operation mode for the independent ventilation ]
Cool/Dry/Fan/Auto/Heat
Heat recovery/By-pass/Auto
The switch operation to set the High and Low speed can be performed as a collective
or per group.
( The 4 fan speed setting is available to the indoor that has 4 levels )
The air flow direction can be switched to 4 directions and swing operation as a collec-
tive or per group
Temperature setting can be performed collectively or per group.
[Setting temperature range]
Operating
Non operating
0 ˚C +40 ˚C / 32 ˚F +104 ˚F
-20 ˚C +60 ˚C / –4 ˚F +140 ˚F
30 90%RH (No condensation)
Input voltage
Specification
*[ ] : indicate the thickness from the
wall.

-5-
ective or per group.
[Ventilation operation]
Low speed/High speed/Ventilation OFF
The overall status lamp displays conditions of the collective statues.
Item
Operation
Monitor
Prohibit local
remote
control
Specification
The specific functions of a local remote controller can be prohibited as a collective or
per group.
[Prohibit function]
ON/OFF operation, Operation mode setting, Temperature setting and Filter sign
reset operation.
The set schedule operations can be switched to ON/OFF (local remote controller
operation prohibition/permission) for each group.
The filter sign reset operation after the air filters are cleaned can be performed as a
collective or per group.
The ventilation operation of the interlocked OA processing unit or LOSSNAY can be coll-
Timer operation
Filter sign
Ventilation
operation
Collective
operation
Each group operation is displayed on the operation setting screen (group) or operation
monitor screen.
Each group
operation
Operation
mode
Fan speed
Air direction
Temperature
setting
Timer
operation
Filter sign
Local remote
control Displayed on the operation setting screen (group).
prohibition
Ventilation
operation
Room
temperature
display
Central control
prohibition
External
input signal
condition
Malfunction
Current time
back-up
Timer setting
The unit address and error code are displayed on the malfunction monitor screen when
a malfunction occurs.
When the power is cut off, the current time is backed up for approximately one week.
(When the controller is fully charged. The controller is fully charged by twenty-four
hours after power feed.)
Operation pattern setting can be performed.
•Operation interval : Minimum 10 minutes
•The daily operation pattern and weekly schedule for each group can be set.
•"The reference temperature and set-back value" or "Setting temperature" which are
* ON/OFF setting up to three times a day are possible for P1/P2/P3.
*P4 enables to set operation prohibition of 3 times per day for the remote controller.
*P1 /P2 /P3 implement the schedule which has combined P1/P2/P3 of ON/OFF
* - is a day without timer operation.
linked with timer operation can be set.
pattern and P4 of remote controller operation prohibition pattern together.
(P1 = P1 + P4 /P2 = P2 + P4 /P3 = P3 + P4 is displayed.)
Other
*1
*3
*3
reset
•A pattern of one day : P1/P2/P3/ P1 /P2 /P3 /P4 / -

-6-
G-50A
management range
Unit
Unit
Another system controller
management range of G-50A
Management range
M-NET Gateway
management range
Unit
Unit
ent OA processing unit, LOSSNAY and slave system controllers) are performed on
the group setting screen.
The interlocked setting for the ventilation equipment as the OA processing unit or
LOSSNAY , etc to indoor unit is performed on the interlocked setting screen.
A maximum of the 64 most recent malfunction are displayed on the malfunction log
monitor.
The connected unit address are displayed on the refrigerant monitor screen.
Some of the indication and function that appear on the each screen can be specified to
Master/Slave setting of the system controller.
match the needs of the user.
The setting of a system controller which the local remote control is prohibition enable or
disable.
Selecting of the prohibited controller which is only local remote controller or both
local remote controller and the other system controller.
The system composed of K-control type air conditioner equipment can be controlled
using the K transmission converter (PAC-SC25KAA)
Item
Group name
designation
External
signal input
interface
External
signal output
interface
Other
Initial setting (for installation and maintenance)
Interlocked
setting
Malfunction
history
Refrigerant
system monitor
User setting
Master system
controller/
Slave system
controller
setting
Prohibition
setting enable
/disable
The prohibited
controller
range setting
K-control
type
*2
*3
Group setting
Connecting
information
setting
Monitor
Other
*1 Each operation is available in accordance with the function of unit.
*2 Master system controller and slave system controller.
When G-50A controls another system controller or when
the system contains only G-50A :
G-50A is set as the master system controller.
* G-50A performs the group setting in this configuration.
When G-50A is controlled by another system controller :
(Example: MJ-300Gateway)
G-50A is set as the slave system controller.
* The group setting is performed by Master system
* G-50A does not
support slaves.
* G-50A does not support slaves.
controller.
Specification
Group name can be specified and display on the operation setting screen.
* Group name setting is need at the initial setting.
Emergency stop/normal, ON/OFF, prohibit/permit for local remote operation can be
controlled for units being controlled with a non-voltage contact signal input from an
external source.
When one or more units being controlled are operating, the "ON" signal will be out-
put, and if a malfunction occurs in one or more units, the "malfunction" signal will
be output.
The group setting operation for units (indoor units local remote controllers, independ-
*3 OA processing unit (LOSSNAY) and the K transmission converter (PAC-SC25KAA) are not included in systems
shipped to North America (USA & Canada).
*3
*3

-7-
Master system
Group Group Group
controller Slave system
controller
Group Group Group
Master system
controller 1 Master system
controller 2
Group
Group
Group
Group
Master system
controller 1 Master system
controller 2
Slave system
controller
NOTE :
The following group setting cannot be performed.
•Unit groups which are not under the management of the master controller and are managed by the slave
system controller.
•A common group is managed by more than two master controllers.
•A slave system controller which exceeds the management range of the master system controller of two or
more.

-8-
Display
P 4
NEXT
Continuously press
04-2002 MON
and
(2 seconds or longer)
G-50A
001
PROHI
BITED
01
3 - 2 Display Screen The lamp indicates the unit op-
eration condition.
ON During operation
OFF All group are stopping
BLINKING Malfunction
Overall status lamp
……
……
……
02
02
1
3
12
5
4
ENTER
NOTE: The temperature setting includes
a function to switch the display
between Celsius (
˚ C) or
Fahrenheit (
˚ F) (page 34).

-9-
POWER
GND
12VDC
91 CN2 51 CN1RS232C
Ethernet
ABS
M-NET
BACK
6 ADDRESS SETTING
7 FUNCTION SETTING
8 IP ADDRESS SETTING
VER.
LAN changeover switch
Refer to section "5. Initial setting ( page 25 ) " for
explanation of the operation of these switches.
LCD contrast adjustment knob
Rear side
Operation
panel
The collective operation switch can be per-
formed in the user setting mode for any screen.
( Excluding menu screen )
If this switch is pressed during
the operation, a whole group stop
is performed.
Collective operation switch
LAN status lamp
Orange LED indicates action and green LED indicates link.
Service LAN connector
Refer to section "5. Initial setting " for an explanation of this connector.
DC power supply terminator
External input / output interface connecter
Refer to section "7. External input / out-
put function ( page 38 )" for the detail
of operation of these connectors.
RS-232C connector
LAN(Ethernet)connector
M-NET Transmission
line terminal
M-NET address setting
Displays, or sets, the controller
M-NET address.
Refer to section "5. Initial setting
(page 25)" for a detailed explan-
ation of operation.
Sets the function of the controll-
er.Refer to section "5. Initial set-
ting(page 25)" for a detailed ex-
planation of operation.
Sets the LAN IP address.
Refer to section "5. Initial setti-
ng(page 25)" for a detailed ex-
planation of operation.
Maintenance
that
a
ADDRESS SETTING FUNCTION SELECTS IP ADDRESS SETTING
IP ADDRESS :
MASK ADDRESS:
192.168.001.001
255.255.255.000
ON
12345678
OFF
M-NET ADDRESS: 000
Function select setting IP address setting
LOSSNAY
16-04-2002
014 6602
12 : 45
(DETECT 014)
05-04-2002
2002
2002
2002
012 6607
09 : 12
(DETECT 012)
.
GROUP NO
NONE
INDICATE
INDICATE
1-1-2001
NONE
7 TEMP. UNIT ˚C/ ˚F
6
3
2
5
4
8
7
NEXT
02

-10-
4 . User operation
Used the following two screens when user operation is performed.
Operation monitor screen This screen displays ON/OFF and malfunction condition of unit.
Operation setting screen The unit operations can be performed by individual group or collective
G-50A normally displays this screen.
operation. These operation include the ON/OFF, operation mode, fan speed,
temperature setting, air direction, ventilation setting, timer operation
ON/OFF, local remote controller prohibition and filter sign reset are
performed by group or collectively. In addition, this screen can also displays
the room temperature of each group.
Press the switch and
Press the switch.
Press the switch.
The unit operation can be verified in
Refer to section "4-1 Operation
condition monitor".
Press the (back screen) switch.
Press the or switch
(Individual group
operation setting
screen)
Each unit operation (Collective
operation
setting screen)
setting is performed.
Refer to section "4-2 Operation setting".
to set "COL. (COLLECTIVE)" or
"GROUP" on the blinking display
and press the switch.
a single glance.
Press the or switch to set
"MON. (MONITOR)" on the blinking
display and press the switch.
Press the switch and
select "1. OPERATION MONITOR" select "2. OPERATION SETTING"
•The collective operation can be performed on any screen (except for the menu screen) in the user operation
<Shifting to the operation monitor screen and operation setting screen>
<Returning to the user operation menu screen>
mode
.......
........
1
2
BACK
SCREEN
BACK
SCREEN
ENTER
ENTER
ENTER

-11-
•Note that operation is different for each of the following display methods.
Press the switch to change the display group in desired opera-
Press the switch to move the " " select the group
number to be operated.
Press the switch to set the displayed group unit is indicated by the
" " symbol to the on/off mode.
" " symbol to the on/off mode.
Press the switch to move the " " symbol. Select
Press the switch to set the displayed group unit is indicated by the
the group name to be operated.
tion and monitor.
When displaying the units in a given group, press the switch turn
all the units in that group ON or OFF.
*Displays up to the first 3 characters of the set group name.
Reverse:ON
Blinking: Malfunction during
units is off
Blinking and Reverse:
Malfunction during
unit is on.
*When a malfunction occurs, refer to section "4-4 Malfunction (page 23) ".
Normal:OFF
4 - 1 Operation condition monitor
•This function displays the ON/OFF/Malfunction status of specific units or group.
•ON/OFF/Malfunction status is shown by the indication corresponding to the unit or group appearing in inverse,
•The user may select display items by unit address, group number or group name.
•During the user operation mode, this screen returns from any screen if there is no operation for approximately
Refer to section "5-7 User setting (page 34)" for detail of user setting.
10 minutes.
(1) Operation Method
(2) Display contents
normal or blinking display.
1
2
1
2
1
2
1
ON/OFF
1
ON/OFF
1
ON/OFF
GROUP
SELECT

-12-
19 30 ˚C / 67 87 ˚F
17 28 ˚C / 63 83 ˚F
19 28 ˚C / 67 83 ˚F
4 - 2 Operation setting
4 - 2 - 1 Group operation setting
•There are two methods for the operation, performing the operation classified by groups or collective operation.
No.
Name of switches Function Display
Ventilation
Operation status display
*When there is an interlocked OA processing unit
ON/OFF switch The ON/OFF condition of the dis-
played group is switched.
Operation mode
switch
Fan speed
switch
Temperature
setting switch
or LOSSNAY , turning this switch ON starts
operation in a [High] ventilated state.
Each time to push the switch, a mode is selected in
Used to the type of the operation
mode selection.
Note:
Operation mode can be selected ac-
cording to the function of unit.
If the unit is only cooling type.
HEAT/AUTO mode may not appear
on the display.
Refer to the instruction manual of
the air conditioner for more detail.
The fan speed can be switched to four
On the group composed of independent LOSSNAY ,
operation mode is selected in a sequence that goes
from HEAT RECOVERY,AUTO, BY-PASS and back
to HEAT RECOVERY.
4 levels
2 levels
The setting temperature display.
The setting range change according to the operation
mode.
COOL/DRY
HEAT
AUTO
Fan speed display
a sequence that goes from COOL, DRY, FUN,
AUTO, HEAT and beck to AUTO for air conditioner
group.
levels. Switching may be 3 levels or 2
levels, depending on the model.
The setting temperature change is per-
formed.
3 levels
NOTE: The temperature setting includes a function
to switch the display between Celsius (°C)
or Fahrenheit (°F) (page 34).
1
2
3
4

-13-
No. Name of switches
Current time
setting switch
Air direction
setting switch
Ventilation Ventilation volume setting display
The operation mode of the interlocked
setting switch
Remote
operation
prohibit switch
Timer more
switch
Reset switch
Group select
switch
Back screen
switch
Cursor position
switch
*1: Room temperature can be displayed by selecting the room temperature display function per "5-7User
Setting".( but limited to indoor unit group)
These switches are used when the cur-
rent time is set.
The Air flow direction can be selected.
The air flow direction can be selected
to four directions and swing operation
(auto vane).
Refer to section "4-5 Current time setting" .
Air flow direction
Function Display
ventilation can be performed.
*Where there is no interlocked ventilation,
the operation of this switch is invalid.
*
"Ventilation" is OA processing unit or LOSSNAY
Used to prohibit for the local remote PROHIBIT : Local remote control specified on the
PERMIT : Local remote control is possible.
prohibit setting screen is not possible.
control.
The timer operation can be performed
according to a previously set operation
pattern.
The filter sign display reset is per-
formed.The reset processing is com-
pleted by pressing this switch two
times.
The display group is changed.
Use to back to the user menu screen.
The position of a cursor can be moved
when a cursor is appear.
The menu screen will be returned.
The cursor position (blinking) moves.
Group number display
This switch displays 1 50 group numbers.
The switch can also display group names.
Filter display
No display
Timer operation display
ON OFF
5
6
7
8
9
10
11
12
13
Filter

-14-
(1) Local remote control operation prohibition setting.
•G-50A can prohibit the operation of item such as connected local remote controller or slave system controller
for each group. The prohibit items are ON/OFF operation, operation mode, temperature setting and filter sign
Press the switch to display the group that the operation
prohibition setting will be performed.
Press the or switch to set "PROH. (PROHIBIT)" on the
blinking display and press switch.
The prohibit setting screen is displayed.
Press the operation switch for the items to be prohibited.
•When the ON/OFF operation is to be prohibited
•When the operation mode is to be prohibited
•When the setting temperature is to be prohibited
•When the filter sign reset is to be prohibited
The items selected for prohibition are shown in reverse display.
After setting of prohibit item, press the switch to go back to the
operation setting screen.
The operation setting screen is displayed. Remote operation prohibition/permission display will
be change PERMIT to PROHIBIT and the pro-
hibited item set on the prohibit setting screen are
shown in reverse display.
The prohibit setting is completed.
•The system controller that performed the local remote control operation prohibition setting can
operate the prohibited items.
•When the No.4 function select is set ON, the prohibit setting of the local remote control operating
cannot be made. For details, refer to "5-3 Function setting."
NOTE:
Press the switch to set "PROHIBIT
ON " .
reset operation.
:
:
:or
:
0
REMOTE
PROHIBITION
1
ON/OFF
2
MODE
DEL.
RESET
4
7
GROUP
SELECT
BACK
SCREEN
ENTER
1
2
1
2
1
2
1
2

-15-
(2) G-50A operation prohibition
(3) Using the function area
•The operation of this controller is prohibited when an operation prohibition setting for this controller is received
from a system controller other than this controller or when an external input signal is used.
The is displayed and the prohibition operation is display in re-
verse display when operation of this controller is prohibited by another
system controller or an external input signal used.
The prohibition operation which is displayed in reverse display is not
possible to operate in this condition.
To select the function from the function area, use the or switch to move the cursor to the blinking to
the function of your choice and press the switch. The current cursor position appears as a blinking indication
on screen.
•MON. (MONITOR) : Shift to the operation monitor screen
•PROH. (PROHIBIT) : Shift to the prohibit setting screen
•COL. (COLLECTIVE) : Shift to the collective operation setting screen
•M (memory) : Stores the setting currently shown on the screen in memory.
•MR (memory read) : Reads the setting stored in memory and activates them for the currently dis-
played group.
ENTER
PROHI-
BITED

-16-
4 - 2 - 2 Collective operation setting
(1) Collective operation setting
•A collective operation setting and a collective prohibit setting can be performed for all the group managed by
this controller at one time.
Press the switch to set "COL. (COLLECTIVE)" in blinking
display and press the switch on the group operation setting
screen.
The collective operation setting initial screen is displayed.
Select the items for operation setting on the collective operation setting
initial screen.
The operation method is same as described in section "4-2-1 Group
operation setting" (Page 12).
The items which were not set, remain set to the same
condition that were set before the collective operation was
performed.
The items selected for the operation blink on the collective operation
setting screen.
When all setting are completed, press the switch to display
the "SET" in blinking display for the indicated function area.
Press the switch one time to complete this setting.
The collective setting is executed.
The collective setting takes approximately 20
seconds.
The display of setting contents is erased
when shift to another screen.
The collective setting is completed when the previous
items light. (After the setting are completed, start
from step to perform operation again if change
operation are required.)
NOTE:
NOTE:
ENTER
ENTER
1
2
3
3
4
5
6

-17-
(2) Collective prohibit setting
Press the switch to set "PROH. (PROHIBIT)" in blinking
display and press the switch on the collective operation setting
initial screen.
The collective prohibit setting initial screen is displayed.
Select the items to be prohibited or permitted on the collective prohibit
setting initial screen.
Each time to press the switch corresponding to the prohibition item,
the prohibition or permission is selected.
Prohibition setting : The prohibited item is displayed in reverse with
Permission setting : The permitted item is displayed with blinking.
The selection method concerning to prohibit/ permit item is same as de-
scribed in section "4-2-1 (1) Local remote control operation prohibit
setting". ( page 14 )
The items selected for the prohibition or permission are displayed with
blinking.
And the "SET" is displayed with blinking in the function area.
When all setting are completed, press the switch one time to com-
plete this settings.
The collective prohibit setting is excused. The collective setting prohibition/permission item
setting is completed when the previous item light.
After setting of prohibit/permit items, press the
switch to back to the collective operation
setting initial screen.
The collective prohibit setting takes approximately
20 seconds.
blinking.
ENTER
ENTER
1
2
3
4
5
67
8
BACK
SCREEN

-18-
The collective operation setting initial screen is displayed.
Press the switch to set "REMOTE CONTROL PROHIBIT ".
Remote operation prohibition/permission display ("REMOTE CONTROL
PROHIBIT " ) is displayed with blinking.
Press the or switch to display the "SET" in blinking display
for the indicated function area.
Press the switch one time to complete the collective prohibit set-
ting.
The collective prohibit setting is executed.
It takes approximately 20 seconds.
The collective prohibit setting is completed when the remote operation
prohibition/permission display is change to be light.
•The display of setting contents is erased when shift to another screen.
•The following restrictions in the collective operation settings.
1. Temperature setting
The range that can be set falls within 19˚C 28˚C /67˚F 83˚F regardless of the operation mode.
2. Operation mode selection, fan speed selection, air direction, etc.,can be collectively set regardless
of the functions of the unit. However, actual setting to a unit without functions cannot be performed.
To obtain the correct setting contents, refer to the respective group operation setting screens.
NOTE:
ENTER
9
10
11
12
13
14
0
REMOTE
PROHIBITION