Honeywell TH6220D1028 FocusPRO 6000 2H/2C Programmable Thermostat SCHED-NOT-FOLLOWED Error Fix: Schedule Not Being Followed

Error code SCHED-NOT-FOLLOWED on the Honeywell TH6220D1028 FocusPRO 6000 2H/2C Programmable Thermostat means: Schedule Not Being Followed. The thermostat is not following the programmed schedule — check if a "Hold" or "Permanent Hold" is active and cancel it; verify the day and time are set correctly; on WiFi models, check if geofencing or Smart Home/Away features are overriding the schedule; ensure the schedule is actually programmed (go to Schedule settings and verify each day has correct setpoints)

The most successful fix is "Reset Thermostat and Reprogram Schedule" (medium difficulty, ~30 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Reset Thermostat and Reprogram Schedule") is rated medium difficulty and takes about 30 minutes. Tools needed: Flathead screwdriver, Smartphone or thermostat touchscreen.

DIY cost: $0. Professional repair typically costs $100-$150. Many homeowners save money by trying the top-ranked community fix first.

The Honeywell TH6220D1028 FocusPRO 6000 2H/2C Programmable Thermostat has 8 other known error codes, including: APP-OFFLINE (Thermostat Shows Offline in App), AUX-HEAT ("Aux Heat" Displayed), BLANK-SCREEN (Blank/Dead Display — No Power), BLOWN-FUSE (HVAC Control Board Fuse Blown), COOL-ON-FLASH ("Cool On" Flashing on Display), and 3 more.

Error code SCHED-NOT-FOLLOWED also appears on 7 other Honeywell models: RTH7600D 7-Day Programmable Thermostat with Backlit Display, RTH9585WF Wi-Fi Color Touchscreen 7-Day Programmable Thermostat, T10 Pro Smart Thermostat with RedLINK Room Sensor, T6 Pro Programmable Thermostat (TH6320WF / TH6220U), T9 Smart Thermostat with Smart Room Sensor, TH4210U2002 PRO 4000 5-2 Day Programmable Thermostat, and 1 more. The fix may vary by model, so check each model's specific page for tailored repair steps.