Led Displays - Trane Z WAVE TZEMT400AB32MAA User Manual

Thermostat User Guide

LED Displays

The Thermostat Control Screen has the following LED and on-screen labels numbered from top to bottom.
• LED 1 Green: System Operation display
• Sys Off displayed = HVAC system is OFF; LED Off.
• WAIT displayed = Minimum Off Time (MOT)delay is active; LED Off (Note: See pages 25 and 30 for more
information on the Minimum Off Timer)
• Cool On displayed = Cooling system is running; LED On.
• Cool On displayed = Cooling Min Run Time (MRT); LED On. (Note: See pages 25 and 30 for more information on
the Minimum Run Timer)
• Heat On displayed = Heating system is running; LED On.
• Heat On displayed = Heating Minimum Run Time (MRT); LED On. (Note: See pages 25 and 30 for more
information on the Minimum Run Timer)
• LED 2 Green: System Stage display
• No display = 1st stage heating or cooling. LED Off.
• 2nd Stg displayed = Stage 2 heating or cooling is active. LED On.
• Aux Heat displayed = Stage 3 heating is active. LED On.
• LED 3 Green: Run/Hold/ESM display. Shows state of Schedule Run/Hold Mode.
• Run displayed = Schedule mode is active. LED Off.
• Hold displayed = Temperature hold is active. LED On.
• ESM displayed = (Energy Savings Mode) Temperature preset is active. LED On.
• LED 4 RED: Alert LED. Used for other system alerts
• No display = No alerts or messages. LED Off.
• Filter displayed = Filter run timer reached. LED On.
• Maint displayed = Maintenance run timer reached. LED On.
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