Trane CGWF - Page 62

62 CGWF-SVX01A-EN
Controls Interface
Table 18 Operating Modes
Chiller Level Mode Description
Top Level Mode Description
MP Resetting The main processor is going through reset.
MP Resetting Sub Modes No Chiller Sub-Modes
Top Level Mode Description
Stopped The chiller is not running either circuit, and cannot run without intervention.
Stopped Sub Modes Description
Local Stop Chiller is stopped by the DynaView Stop button command- cannot be
remotely overridden.
Immediate Stop Chiller is stopped by the DynaView Immediate Stop (by pressing the Stop
then Immediate Stop buttons in succession) - previous shutdown was
manually commanded to shutdown immediately.
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.
Top Level Mode Description
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.
Run Inhibit Sub Modes Description
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.
Starting is Inhibited by Building Automation
System
Chiller is stopped by Tracer or other BAS system.
Starting is Inhibited by External Source The chiller is inhibited from starting or 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 The chiller is inhibited because of lack of communication with the BAS. This
is only valid 15 minutes after power up.
Starting is Inhibited by Low Ambient
Temperature
The chiller is inhibited based on the outdoor air temperature.
Top Level Mode Description
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 Description
Waiting For Evaporator Water Flow The chiller will wait up to 20 minutes in this mode for evaporator water flow
to be established per the flow switch hardwired input.
Waiting For A Need To Cool The chiller will wait indefinitely in this mode, for an evaporator leaving water
temperature higher than the Chilled 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.
Top Level Mode Description
Waiting to Start The chiller is going through the necessary steps to allow the lead circuit to
start.
Sub Modes Description
Waiting For Condenser Water Flow The chiller will wait up to 20 minutes in this mode for condenser water flow
to be established per the flow switch hardwired input.
Top Level Mode Description
Running At least one circuit on the chiller is currently running.
Running Sub Modes Description
Maximum Capacity The chiller is operating at its maximum capacity.
Capacity Control Softloading The control is limiting the chiller loading due to capacity based softloading
setpoints.