Page 104 OM 780-2
Figure 46. Chiller Status (Main > System Status > Chiller Status)
Status (Chiller Run Mode)
The chiller status tells you what general state a chiller is currently in. The following chiller status states are possible:
• Off
• Start
• Run
• PreShutdown
• Comm Loss
Chiller status at the CSM corresponds to one or more operating states (or other conditions) at a chiller. For information on
specific chiller operating states, refer to the appropriate chiller operation manual (see Reference Documents on page 7.
Off
When the chiller status is Off, the chiller is disabled. The Off chiller status has two sub-states:
1. Off: Local
2. Off: CSM
The sub-state name tells you why the chiller status is Off.
Off: Local Sub-state: The Off: Local chiller status occurs if the chiller is communicating with the CSM but is unavailable
(see the “Unavailable and Available Chillers” section in the “Chiller Sequencing Control” portion of this document). It
indicates that something at the chiller has it disabled and thus the CSM is not able to start it. The cause might be, for
example, a Fault alarm, or an open remote start/stop switch.
Off: CSM Sub-state: The Off: CSM chiller status indicates that the chiller is available, but the CSM has it disabled. This
is the normal chiller status of a chiller that is not part of the current stage. If the chiller status of a chiller that is part of the
current stage is Off: CSM, it is likely that the CSM tried to start that chiller but was unable to. In this instance, the CSM
keeps the chiller off and—in most cases—performs a stage-up.
To Next Page
Loading...
Need help?
General
