Carrier 30RQ Operation And Maintenance Instructions page 13

4.3.5 - Description of the Information menu
Information menu (3)
Item Format Units
0
±nn.n °C
LOFF -
L-On -
L-Sc -
CCn -
rEM -
MASt -
OFF -
rEADY -
dELAY -
-
StOPPing -
running -
triPout -
OvErridE -
dEFrOSt -
FrEEcOOl
OCCUPIEd -
UNOCCUPIEd -
COOL -
HEAT -
StAndbY -
BotH -
-
ALArM -
ALErt
MAStEr -
SLAvE -
1 [1] nn
-
2 [2]
occu -
unoc
Forc
3 nn.n minutes
4 [2]
HEAt -
COOL -
Auto -
-
5 [2]
HEAt -
COOL -
StbY -
both -
Forc -
6 [2] Yes -
No
Forc
6 [2] Yes -
No
Forc
7 nnn %
8 nnn %
9 [2] nnn %
10 [2] nnn %
11 nnn %
Forc
12 [2] nnn %
13 [2]
SP-1 -
SP-2
AUtO
Description
Automatic display mode. It cycles through the following displays:
1: Controlled water temperature: temperature of the water that the unit tries to maintain at the control point.
2: Unit operating type
Local Off
Local On
Local On - based on unit clock. Displayed if the CCN/clock board is installed
CCN Control. Displayed if the CCN/clock board is installed
Remote Control
Master unit
3: Unit status
Off: Unit is stopped and not authorised to start.
Ready: Unit is authorised to start
Delay: Unit is in delay at start-up. This delay is active after the unit has been switched on. The delay can be configured in the
User Configuration menu
Stopping: Unit is currently stopping
On: Unit is running or authorised to start
Fault shutdown
Limit: The operating conditions do not allow total unit operation
Defrost: One circuit is in defrost mode
Free cooling: The unit operates in free cooling mode
4. Unit occupied/unoccupied status
Occupied: Unit in occupied mode
Unoccupied: Unit in unoccupied mode
5. Heating/cooling operating mode
Cooling: Unit operates in cooling mode
Heating: Unit operates in heating mode
Standby: Unit is in auto cooling/heating changeover mode, and is in standby
Both: The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation
6: Alarm mode
Alarm: Unit is totally stopped because of failure
Alert: Unit is in failure but not completely stopped
7: Master/Slave status
Master: The master/slave control is active and the unit is the master
Slave: The master/slave control is active and the unit is the slave
Texts 4 and 5 are not displayed if the unit is in Local off mode or if the unit is in remote control mode and contact 1 is open
Active mode codes. Each active mode is displayed in turn. This Item is masked when nil. Pressing the enter button when a mode
code is displayed causes a character text expansion to be scrolled accross the four-digit display. See the description in the
following table
This item indicates the current unit occupied/unoccupied mode.
Occupied
Unoccupied
The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.
Start-up delay. This item indicates the minutes left before the unit can be started. This delay at start-up is always active after the
unit has been switched on. The delay can be configured in the User Configuration 1 menu.
Heating/cooling on selection: This item is accessible in read/write, if the unit is in local control mode.
Heating mode selection
Cooling mode selection
Automatic heating/cooling mode changeover selection. Only displayed if the auto changeover function is selected (User
Configuration 1 menu).
Heating/cooling mode. This item indicates whether the unit is in cooling or heating. Displayed if the unit controls a boiler.
Heating
Cooling
Standby: Unit is in auto cooling/heating changeover mode, and is in standby.
Both: The unit operates in cooling (compressors) and heating (boiler). Only with HSM operation.
The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.
Heat reclaim mode selection. Only displayed if the unit is a chiller and the heat reclaim option is used. The value is displayed in
turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.
Free cooling prevention status. Only shown if the unit is a chiller and if the free cooling option is available. The value is displayed
in turn with "Forc", when the unit is in CCN control and if this variable is forced through CCN.
Total active capacity of unit. It is the percentage of compressor capacity used by the unit.
Total active capacity of circuit A. It is the percentage of compressor capacity used by on circuit A.
Total active capacity of circuit B. It is the percentage of compressor capacity used by on circuit B. Dual-circuit units only.
Total active capacity of circuit C. It is the percentage of compressor capacity used by on circuit C. Triple-circuit units only.
Present demand limit. This is the authorised operating capacity of the unit. See section 5.7.
The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.
Present lag chiller demand limit. Displayed when the master/slave control is selected.
Setpoint select in local mode. This point is read/write accessible. Displayed only when the unit is LOFF, L-On or L-Sc operating type.
SP-1 = cooling/heating setpoint 1
SP-2 = cooling/heating setpoint 2
AUtO = active setpoint depends on schedule 2 (setpoint selection schedule). See section 5.6.1 & 4.3.11.6.
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