Honeywell RTH221 Series - Advanced System Setup Guide; Accessing Thermostat Setup Menu

RTH2300/RTH221
13 69-2606ES—01
SETUP WIRING ASSISTANCE TROUBLESHOOTING
Enter System Setup
System setup
To enter system setup, press and hold both the s and
t buttons until the display changes (approximately 5
seconds).
M32713
Heat Off Cool Auto On
Fan