Installation and Maintenance Manual

Controls Interface
134 RLC-SVX09H-EN
Table 107. Chiller mode
Chiller Modes Description
Top Level Mode Further information is provided by the submode
Sub-modes
Stopped The chiller is not running either circuit, and cannot run without intervention.
Stopped Sub-modes
Local Stop
Chiller is stopped by DynaView Stop button command- cannot be remotely
overridden.
Immediate Stop
Chiller is stopped by the DynaView Immediate Stop (by pressing Stop button
then Immediate Stop buttons in succession) - previous shutdown was manually
commanded to shutdown immediately without a run-unload or pumpdown cycle
- cannot be remotely overridden.
No Circuits Available
The entire chiller is stopped by circuit diagnostics or lockouts that may
automatically clear.
Diagnostic Shutdown - Manual Reset The chiller is stopped by a diagnostic that requires manual intervention to reset.
Cond Pmp Strt Dly (Head Pres Ctrl) min:sec
Only possible when Condenser Head Pressure Control option is enabled and the
condenser pump is being manually commanded to run. This wait may be
necessary due to the Head Pressure control device’s stroke time.
Run Inhibit
The chiller is currently being inhibited from starting (running), but may be
allowed to start if the inhibiting or diagnostic condition is cleared.
Run Inhibit Sub-modes
No Circuits Available
The entire chiller is stopped by circuit diagnostics or lockouts that may
automatically clear.
Ice Building Is Complete
The chiller is inhibited from running as the Ice Building process has been normally
terminated on the evaporator entering temperature. The chiller will not start
unless the ice building command (hardwired input or Building Automation
System command) is removed or cycled.
Ice to Normal Transition
The chiller is inhibited from running for a brief period of time if it is commanded
from active ice building mode into normal cooling mode via the ice building
hardwired input or Tracer. This allows time for the external system load to
"switchover" from an ice bank to the chilled water loop, and provides for a
controlled pull down of the loop's warmer temperature. This mode is not seen if
the ice making is automatically terminated on return brine temperature per the
mode below.
Start is Inhibited by BAS (Building Automation System) Chiller is stopped by Tracer or other BAS system.
Start is Inhibited by External Source
The chiller is inhibited from starting (and running) by the "external stop"
hardwired input.
Diagnostic Shutdown - Auto Reset The entire chiller is stopped by a diagnostic that may automatically clear.
Waiting for BAS Communications (to Establish Operating
Status)*
The chiller is inhibited because of lack of communication with the BAS. This is
only valid 15 minutes after power up.
Start is Inhibited by Low Ambient Temp
The chiller is inhibited from starting (and running) by an outdoor air ambient
temperature lower than a specified temperature - per user adjustable settings
and can be disabled.
Start is Inhibited by Low Condenser Temperature
The chiller is inhibited from starting due to the Low Condenser Temperature Start
Inhibit function.
Start is Inhibited by Local Schedule
The chiller is inhibited from starting based on the local time of day scheduling
(option).
Auto
The chiller is not currently running but can be expected to start at any moment
given that the proper conditions and interlocks are satisfied.
Auto Sub-modes
Waiting For Evap Water Flow
The unit will wait up to 20 minutes in this mode for water flow to be established
per the flow switch hardwired input
Waiting for Need to Cool
The chiller will wait indefinitely in this mode, for a leaving water temperature
higher than the Chilled Water Setpoint plus some control dead-band.
Waiting for Need to Heat
The chiller will wait indefinitely in this mode, for a leaving water temperature
lower than the Hot Water Setpoint plus some control dead-band.
Power Up Delay Inhibit: min:sec On Power Up, the chiller will wait for the Power Up Delay Timer to expire.