CTV-SVU01G-EN
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Submodes are dependent on the top-level mode. Their appearance on the Chiller Operating
Modes screen has the following characteristics:
• The newest submode appears at the top of the submode list.
• Submodes disappear when they no longer apply.
• The screen displays up to six submodes.
• If less than six submodes are active, the submode rows that do not apply are blank.
Table 5. Chiller top-level operating modes and corresponding submodes for Simplex chillers
Top-level mode Description Corresponding submodes
Stopped
Chiller is inhibited from running and requires user action to go
to Auto.
Local Stop
Immediate Stop
Diagnostic Shutdown—Manual Reset
Run Inhibit
Unit is inhibited from running by building automation system
(BAS), external control source (Ext), or Auto Reset diagnostic
Ice Building Is Complete
Tracer Inhibit
External Source Inhibit
Diagnostic Shutdown—Auto Reset
Auto
Unit is determining if there is a need to run.
Waiting for Evaporator Water Flow
Waiting for a Need to Cool
Waiting for a Need to Heat
Power Up Delay Inhibit (MIN:SEC)
(a)
Waiting to Start
Unit is waiting for tasks required prior to compressor start to be
completed.
Waiting For Condenser Water Flow
Establishing Oil Pressure
Pre-Lubrication Time (MIN:SEC)
(a)
Motor Temperature Inhibit: Motor Temperature/
Inhibit Temperature
Restart Time Inhibit (MIN:SEC)
(a)
AFD Restart Inhibit
High Vacuum Inhibit: Oil Sump Press/Inhibit
Press
Low Oil Temperature Inhibit: Oil Temperature/
Inhibit Temperature
Waiting for Starter To Start (MIN:SEC)
(a)
Starting Compressor Unit is starting compressor.
No submode is shown
Running Compressor is running with no limits in effect.
No submode is shown
Hot Water Control
Surge
Base Loaded
Hot Gas Bypass
Ice Building
Ice To Normal Transition
Current Control Soft Loading
RReeppoorrttss
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