Trane CGWF Installation Operation & Maintenance page 64

Table 19 Circuit Level Operating Modes
Circuit Level Operating Modes:
Waiting to Start
Sub Modes
Top Level Mode
Running
Sub Modes
Top Level Mode
Running - Limit
Sub Modes
Low Evaporator Pressure Start
Condenser Pressure Limit
Top Level Mode
Preparing Shutdown
Preparing Shutdown
Sub Modes
Operational Pumpdown
Top Level Mode
Shutting Down
Sub Modes
Top Level Mode
Misc.
Misc. Sub Modes
Service Pumpdown
Compressor X Running
Restart Time Inhibit Cprsr X: MIN:SEC
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Controls Interface
Description
The chiller is going through the necessary steps to allow the lead circuit to
start.
Description
No Circuit Sub-Modes
Description
The compressor on the given circuit is currently running.
Description
No Circuit Sub-Modes
Description
The compressor on the given circuit is currently running in a limit mode.
Description
When LPC is open and either compressor on the circuit is running and the
LPC ignore time has not yet expired.
The circuit is being inhibited from loading due to high condenser pressure.
Description
The circuit is preparing to de-energize the compressor.
Description
The operational pumpdown is enabled and the circuit is shutting down.
Description
The chiller is going through the necessary steps after de-energizing the
compressor.
Description
No Circuit Sub-Modes
Description
These sub modes may be displayed in most of the top level circuit modes
Description
The circuit is currently performing a service pumpdown.
A specific compressor is running where X is A or B.
If there is accumulated Restart Inhibit Time, it must expire before the
compressor is allowed to start. X is denoted as compressor A or B.
CGWF-SVX01A-EN