Carrier 30GX Installation, Operation And Maintenance Instructions page 16

Item 6 Heating/cooling operation
This information is only available on units
configured as heat pumps. This item shows the
current operating mode.
The cooling mode is active in the following
cases:
• The unit is in operating type Local Cooling
(L-C1 or LC2).
• The unit is in operating type CCN (CCn)
and has received a cooling operation
network command.
• The unit is in operating type Remote (rEM)
and has received a cooling operation
command from a remote contact (see
section 3.4.5, description of remote heat/
cool contact).
The heating mode is active in the following
cases:
• The unit is in operating type Local Heating
(L-H).
• The unit is in operating type CCN (CCn)
and has received a heating operation
network command.
• The unit is in operating type Remote (rEM)
and has received a heating operation
command from a remote contact (see
section 3.4.5, description of remote heat/
cool contact).
Item 7 Number of active capacity stages
This is the number of capacity stages
operating.
Item 8 Demand limit active
This is the authorised operating capacity of
the unit. The value depends on the limitation
method used (see section 4.2.10):
• based on an external 0-10 V d.c. signal;
• based on the limit setpoint and the status of
a remote contact.
Disablement of demand limit in local mode:
when the unit is in local operating mode it is
possible to disable demand limit from any
source, via the keyboard. For this purpose,
follow the procedure described below.
OPERATION
Hold down the MENU button
until the LED for INFORMA-
TION lights.
Press one of the arrow buttons
until block 1 displays item
number 8 (demand limit). The
active demand limit value is
displayed in block 2 (75% in
this example).
Press the . button. The
INFORMATION menu LED
flashes indicating that modi-
fication mode is active.
Press the or . button.
"InH" is displayed in block 2.
The INFORMATION menu
LED in block 3 keeps flashing.
Press the . button again.
Demand limit is now disabled.
The INFORMATION menu
LED stops flashing.
16
PRESS BLOCK 3 BLOCK 1
BUTTON LED DISPLAY
0
0
1
8
8
8
8
Item 9
Item 10-11
Item 12
BLOCK 2
DISPLAY
75
75
lnH
lnH
The procedure for cancelling demand
limit disablement in local mode is exactly
as described above. When the setpoint
LED flashes, press the procedure for
cancelling demand limit disablement in
local mode is exactly as described above.
When the setpoint LED flashes, press the
or button. This cancels the "InH"
display and restores reduction. Then
press the button.
Total active capacity of unit as %
This is the percentage of compressor
capacity used by the unit.
Total active capacity of circuits A/B as %
This is the percentage of compressor
capacity used on circuits A/B.
Active setpoint
This is the current heating or cooling
setpoint.
It refers to cooling setpoint 1 in the
following cases:
• The unit is in operating type Local
Operation - Cooling Setpoint 1 (L-C1
or LC1r).
• The unit is in operating type CCN (CCn)
and cooling mode, and has received a
network command to use setpoint 1.
• The unit is in operating type Remote
(rEM) and has received a command to
operate in cooling type and to use
setpoint 1, from a remote contact (see
section 3.4.4, description of remote
cooling setpoint selection contact).
It refers to cooling setpoint 2 in the
following cases:
• The unit is in operating type Local
Operation - Cooling Setpoint 2 (L-C2
or LC2r).
• The unit is in operating type CCN
(CCn) and cooling mode, and has
received a network command to use
setpoint 2.
• The unit is in operating type Remote
(rEM) and has received a command to
operate in cooling mode and to use
setpoint 2, from a remote contact (see
section 3.4.4, description of remote
cooling setpoint selection contact).
Cooling setpoint 2 is normally used for
ice storage.
It refers to heating setpoint in the
following cases:
• The unit is in operating type Local
Operation - Heating Setpoint (L-H).
• The unit is in operating type CCN
(CCn) and heating mode.
• The unit is in operating type Remote
(rEM) and has received a command to
operate in heating mode.