- 01Enhanced guide
- 02Installation Settings
- 03Thresholds
Confirm the model
This page follows the official Smart Thermostat Enhanced Setup and User guide (2023 PDF), retrieved for this review on November 13, 2026. It is not a claim that every firmware revision or every ecobee model has the same screen. Premium, ecobee3 and other models are outside this page’s verified menu scope.
Find the threshold names
The guide’s route is Main Menu System → Main Menu General → Settings → Installation Settings → Thresholds. Some staging controls are shown under manual staging. That is a description of where the guide documents them, not a recommendation to switch staging to Manual.
| Enhanced setting | What to identify |
|---|---|
| Aux Heat Max Outdoor Temperature | The outdoor-temperature ceiling above which auxiliary heat is not called. |
| Aux Heat Minimum On Time | A minimum run time; the cited guide lists 300 seconds, or 5 minutes. |
| Compressor to Aux Temperature Delta | A setpoint-to-room-temperature gap; listed as auto and given priority over Runtime in this guide. |
| Compressor to Aux Runtime | A compressor heating duration; listed as auto. |
| Compressor Min Outdoor Temp | A separate compressor restriction; listed as Disabled. |
Listed values describe this document, not recommendations for your equipment. Only applicable controls appear for a configured system. A missing item does not justify changing equipment type to reveal it.
A long-run alert needs context
Record the exact wording and the interval it reports. A long-run alert and an outdoor-temperature lockout are not interchangeable controls. If indoor temperature is falling, ice persists or the system is not working as expected, seek service rather than lowering or disabling a lockout to suppress the message.
Use a simple record: current mode, alert text, approximate start/end times, indoor trend, outdoor conditions and any recent schedule change. Ask the installer which control is actually responsible and whether the intended backup source is available. You can share this record without opening equipment or changing a threshold.
Questions to take to your installer
- Is backup electric resistance or another fuel, and is concurrent operation permitted for this installation?
- Which outdoor-temperature information is used, and is it plausible?
- Are the present thresholds the commissioned settings for this equipment?
- Is the alert about runtime, a disabled source or a separate problem?
The DOE/BSESC controls guide recommends discussing control priorities and calculated switchover conditions with the installer. The checklist can help organize observations; it does not set ecobee thresholds.