Honeywell RTH3100C - Quick Reference to Display Screen

Operating Manual
Quick reference to display screen
Current inside temperature
Low battery warning
Temperature setting
System Status
• Cool On: Cooling system is on.
• Heat On: Heating system is on.
• Em: Emergency heat is on.
If flashing, compressor
protection is engaged
(see page 8). •
• Aux: Auxiliary heat is on.
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