DCN 141-01128-04 10/6/08
10
Thermostat Control Screen
LED Displays
The Thermostat Control Screen has the following LED labels and descriptions, numbered from top to
bottom, 1-4.
o LED 1 Green: System Operation display.
o LED Off, “SYS OFF” displayed > HVAC system is OFF
o LED Off, “SYS MOT” displayed > Minimum Off Time (MOT) delay on is active
o LED On, “SYS ON” displayed > HVAC System is running
o LED On, “SYS MRT” displayed > Minimum Run Time (MRT) delay off is active
o LED 2 Green: System Economy Mode display
o LED OFF, “Econ” displayed > Economy or 1
st
stage heating or cooling only
o LED On, “2
nd
Stg” displayed > Stage 2 heating or cooling is active
o LED On, “Aux Heat” displayed > Stage 3 heating is active
o LED 3 Green: Run/Hold display. Shows state of Schedule Run/Hold Mode.
o LED Off, “Run” displayed > Setback schedule is running
o LED On, “Hold” displayed > Schedule is off, temperature setpoint hold in effect.
o LED 4 RED: Alert LED. Used for other system alerts
o LED Off, No Alerts present
o LED On, Alert Text displayed > Specific alert text
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