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96 RTAC-SVX01F-EN
Controls Interface
Table 25 Chiller Modes
Chiller Modes Description
Top Level Mode
Sub-modes
Stopped The chiller is not running and cannot run without inter-
vention. Further information is provided by the sub-
mode:
Local Stop Chiller is stopped by DynaView Stop button command-
cannot be remotely overridden.
Panic Stop Chiller is stopped by the DynaView Panic Stop (by
pressing Stop button twice in succession) - previous
shutdown was manually commanded to shutdown
immediately without a run-unload or pumpdown cycle -
cannot be remotely overridden.
Diagnostic Shutdown - Manual Reset The chiller is stopped by a diagnostic that requires
manual intervention to reset.
Other sub-modes are possible in conjunction with at least
one of the above modes - See items below for their
descriptions:
Diagnostic Shutdown - Auto Reset
Start Inhibited by Low Cond Temp
Start Inhibited by Low Ambient Temp
Start Inhibited by External Source
Start Inhibited by BAS
Waiting for BAS Communications
Ice Building to Normal Transition
Ice Building is Complete
Design Note: Maximum Capacity was eliminated as a
annunciated mode prior to any release
Run Inhibit The chiller is currently being inhibited from starting (and
running), but may be allowed to start if the inhibiting or
diagnostic condition is cleared. Further information is
provided by the sub-mode:
Diagnostic Shutdown - Auto Reset The entire chiller is stopped by a diagnostic that may
automatically clear.
Start Inhibited by Low Cond Temp The chiller is inhibited from starting by Low Condenser
Temperature- Inhibit is active below either 25°F (can be
disabled with proper freeze protection) or 0°F (limit set by
design, cannot be disabled). As an exception, this will not
stop a chiller already running.
Start 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 Inhibited by External Source The chiller is inhibited from starting (and running) by the
"external stop" hardwired input.