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the accuracy of the outside air, entering and leaving water
thermistors.
MODE 7 (Operating Mode
Pump Rotation
Criteria for Mode — Tested when the unit is ON or OFF. This
mode is active when the Cooler Pump Sequence (Configura-
tion
OPTN
PUMP) =2 (2 Pumps Automatic Changeover)
and the Pump Rotation Delta Timer (Configuration
ROT.P) has expired.
Action Taken — The control will switch the operation of the
pumps. The lead pump will be operating normally. The lag
pump will be started, becoming the lead, and then the original
lead pump will be shut down.
Termination — This mode will terminate when the pump
operation has been completed.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 8 (Operating Mode
riodic Start
Criteria for Mode — This mode is active when the cooler
pump is started for the Periodic Pump Start configuration
(Configuration
OPTN
PM.PS=YES).
Action Taken — If the pump has not run that day, a pump will
be started and will run for 2 seconds at 2:00 PM. If the machine
is equipped with dual pumps, Pump no. 1 will run on even days
(such as day 2, 4, 6 of the month). Pump no. 2 will run on odd
days (such as day 1, 3, 5 of the month).
Termination — This mode will terminate when the pump
shuts down.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 9 (Operating Mode
Low Noise Active
Criteria for Mode — This mode is active when the Night
Time Low Noise Option has been configured and the time is
within the configured time. Programming a Night Low Noise
Start Time (Configuration
Low Noise End Time (Configuration
figures the option.
Action Taken — The control will raise the head pressure set
point to reduce the number of condenser fans on, thereby
reducing the sound of the machine. Additionally, if the Night
Time Low Sound Capacity Limit (Configuration
LS.LT) has been configured, the units capacity will be limit-
ed to the programmed level.
Termination — This mode will terminate once the Night Low
Noise End Time (LS.ND) has been reached.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 10 (Operating Mode
Manager Active
Criteria for Mode — Tested when the unit is ON or OFF. This
mode is active if a System Manager such as Building Supervi-
sor, Chillervisor System Manager, or another CCN device is
controlling the machine.
Action Taken — The machine will respond to the specific
command received from the System Manager.
Termination — The mode will be terminated if the System
Manager control is released.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 11 (Operating Mode
Slave Ctrl Active
Criteria for Mode — Tested if the machine is ON. This mode
is active if the Master Slave Control has been enabled. Having
MODE
MD07) —
Water
OPTN
MODE
MD08) — Pump Pe-
MODE
MD09) —
OPTN
LS.ST) and a Night
OPTN
LS.ND) con-
OPTN
MODE
MD10) — System
MODE
MD11) —
2 machines programmed, one as the master (Configuration
RSET
MSSL=1 [Master]) and the other as a slave
(Configuration
Action Taken — Both the master and slave machine will re-
spond to the capacity control commands issued by the master
controller. This may include control point changes and demand
limit commands.
Termination — This mode will terminate when the Master
Slave Control has been disabled.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 12 (Operating Mode
Changeover Active
Criteria for Mode — This mode is not supported for Cooling
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 13 (Operating Mode
Cooling Active
Criteria for Mode — This mode is not supported for Cooling
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 14 (Operating Mode
claim Active
Criteria for Mode — This mode is not supported for Cooling
Night
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 15 (Operating Mode
Heat Active
Criteria for Mode — This mode is not supported for Cooling
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 16 (Operating Mode
Low EWT Lockout
Criteria for Mode — This mode is not supported for Cooling
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
gramming options.
MODE 17 (Operating Mode
Active
Criteria for Mode — This mode is not supported for Cooling
Only units.
Action Taken — None.
Termination — None.
Possible Causes — This mode is in effect only due to pro-
Mast
gramming options.
MODE 18 (Operating Mode
Mode in Effect
47
RSET
MSSL=2 [Slave]).
MODE
MD12) —
MODE
MD13) —
MODE
MD14) —
MODE
MD15) — Electric
MODE
MD16) — Heating
MODE
MD17) — Boiler
MODE
MD18) —
Auto
Free
Re-
Ice
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