Displaying/Modifying A Menu Item - Carrier 30GX Installation, Operation And Maintenance Instructions

OPERATING TYPE
Block 2 Display Description
LOFF Local Off: the unit is halted in local mode.
Local operation - Local On - Cooling Setpoint 1: the unit is in local
L-C1
control mode and is authorised to start up in cooling mode with
setpoint 1.
Local operation - Local On - Cooling Setpoint 2: the unit is in local
L-C2*
control mode and is authorised to start up in cooling mode with
setpoint 2. This is displayed if cooling setpoint 1 (item 0 in the
setpoint menu) has a different value from cooling setpoint 2 (item 1
in the setpoint menu).
Local operation - Local On - Heating Setpoint: the unit is in local
L-H*
control mode and is authorised to start up in heating mode (heat
pump only).
Local operation - Local On - Cooling Setpoint 1 - Heat Reclaim: the
LC1r*
unit is in local control mode and is authorised to start up in cooling
mode with setpoint 1 and the reclaim mode is selected. This is not
displayed if one of the following conditions is met:
• the unit is water-cooled and controls condenser water valves, and
the condensing setpoint (item 3 in the setpoint menu) is equal to the
reclaim setpoint (item 4 in the setpoint menu).
• the unit is air-cooled and the condensing setpoint (item 3 in the
setpoint menu) is equal to the reclaim setpoint (item 4 in the
setpoint menu).
Local operation - Local On - Cooling Setpoint 2 - Heat Reclaim: the
LC2r*
unit is in local control mode and is authorised to start up in cooling
mode with setpoint 2 and the reclaim mode is selected. This is
displayed if LC1r is displayed and cooling setpoint 1 (item 0 in the
setpoint menu) has a different value from cooling setpoint 2 (item 1
in the setpoint menu).
The unit is controlled by CCN commands.
CCn
The unit is controlled by external remote control contacts.
rEM
Key:
* : Displayed if the configuration requires it.
Section 5.1 gives a more detailed description of the
commands to start/stop the unit, analysed by operating
type.
4.2.2.2 - Stopping the unit in local mode
The unit can be stopped in local mode at any time by
pressing the operating type selector button.
TO STOP THE UNIT
Button Action
Press the operating type selector button
for less than 4 seconds (one short press
is enough)
When the button is released, the unit
stops without the need for further
action.
4.2.2.3 - Modifying the operating type
The unit operating type can be modified at any time by the
following method:
In the example that follows, the operating type to be
selected is Local Operation - Cooling Setpoint 1 (L-C1).
CHANGING THE OPERATING TYPE
Button Action
Press the operating type selector button
for more than 4 seconds
Hold down the operating type selector
button. The available operating types are
displayed one by one until the button is
released.
Release the operating type selector button
when the operating type you want is
displayed (in this example L-C1). "C"
flashes in block 1 to show that the
controller is awaiting confirmation.
Press the button to confirm the
operating type selected (in this
example L-C1). "t" is displayed in
block 1 to indicate the operating type
selected. If the button is not
pressed soon enough, the controller
will cancel the change and continue
to use the previous operating type.
12
Block 1 display Block 2 display
Block 1 display Block 2 display

4.2.3 - Displaying/modifying a menu item

To access a menu item, first choose a menu. Each menu
gives access to up to 20 items.
MENU LEDS
(BLOCK 3)
0 0 0
1 1 1
2
3
17 17 17
18 18 18
19 19 19
SELECTION
BUTTONS BLOCK 4)
ITEM NUMBER (BLOCK 1)
4.2.3.1 - Selecting a menu
The MENU button allows you to select a menu from the 10
that are available. Each time you press this button one of the 10
LEDs lights up in turn alongside each of the icons representing
a menu. The active menu is the one against which the LED is
lit.
INFORMATION menu
TEMPERATURE menu
PRESSURE menu
SETPOINT menu
INPUT menu
OUTPUT/TEST menu
CONFIGURATION menu Displays the unit configuration and enables it to
ALARM menu
ALARM HISTORY menu Displays the history of alarms.
OPERATING LOG menu Displays the operating times and number of starts
NOTE: To scroll quickly through the menus, hold the menu
button down.
MENU BUTTONS (BLOCK 3)
0 0 0 0 0
1 1 1 1 1
17 17 17 17 17
18 18 18 18 18
19 19 19 19 19
Displays the general operating parameters for the
unit.
Displays the unit operating temperatures.
Displays the unit operating pressures.
Displays the unit setpoints and enables them to be
modified.
Displays the status of the unit digital and analogue
inputs
Displays the status of the unit outputs and enables
them to be tested.
be modified.
Displays active alarms.
for the unit and its compressors.
0 0
1 1
17 17
18 18
19 19