Ecobee Error Messages: Alerts, Aux Heat and Calibration

Separate a maintenance reminder from an equipment alert

Service, filter or UV lamp. ecobee’s Premium guide describes these as maintenance reminders with a date and an interval you can set. For a filter reminder, check when the filter was actually changed before treating the message as a new breakdown.

Auxiliary heat. ecobee’s alert settings distinguish time spent using auxiliary heat from using it above a chosen outdoor temperature. Both are covered in the next section.

Failed heating or cooling. ecobee describes these as alerts that the system failed to heat or cool. If that matches what is happening in the house, use the equipment checks linked below.

If you only have a number, the questions at the end explain error 10, error 12 and E298. Match the device before following a code’s repair instructions.

Match the warning to the right setting

Aux Heat Runtime Alert. ecobee defines this as auxiliary heat running longer than the time you set for that alert. Read it as a usage warning, not a diagnosis of a broken compressor.

Aux Outdoor Temp Alert. ecobee says this appears when auxiliary heat is requested above the outdoor temperature chosen for that alert. The important comparison is with that alert’s setting, not simply whether it feels cold outside.

Start by opening the alert preferences and checking which limit the message concerns. Then compare it with what the house is doing. Is it staying comfortable, or losing temperature while heat is requested?

ecobee’s Premium guide explains that auxiliary heat helps a heat pump warm the home and can keep it warm when the heat pump cannot in very cold weather. The warning alone is not a reason to turn that heat source off.

For a house that is not warming, continue with the ecobee heating and cooling checks. That guide covers the heat request, equipment testing and configuration. This page stays with the meaning of the message.

Read which condition triggered the alert

ecobee’s alert descriptions make these distinctions:

Look at the room temperature and the temperature you asked for. For an actual loss of heat or cooling, follow the ecobee equipment guide above; changing an alert limit is not the repair.

ecobee describes its low and high temperature alerts as protection against freezing or excessive heat damage. Treat a continuing temperature problem as something to resolve, even if you can make the notification disappear.

Separate initial setup from repeated restarts

For Smart Thermostat Premium after initial setup, ecobee’s installation guide allows up to 20 minutes for temperature calibration before heating or cooling resumes. Let that setup stage finish if the home can safely wait.

A message that returns with repeated black screens deserves a different response. ecobee’s rebooting guidance explains that the thermostat takes power from the heating and cooling equipment, with no internal power source.

That guidance lists interrupted power and equipment safety switches among possible causes of restarts. It also says gaps in System Monitor runtime data can help identify power losses. If this keeps happening, have the equipment’s power supply and safety shutdowns investigated rather than repeatedly restarting the thermostat.

Use the thermostat fault guide if the screen stays blank. A recurring loss of power is a separate problem from finishing the first setup.

Read the explanation before overriding it

In the Smart Thermostat Premium guide, ecobee explains that this symbol can mean auxiliary heat has been temporarily disabled to save energy. It appears when a compressor to auxiliary heat setting calls for assistance but the outdoor temperature exceeds Aux Heat Maximum Outdoor Temperature.

ecobee says tapping the symbol and then Learn More explains the condition. The displayed options include Override For 2 Hours, which temporarily ignores that outdoor limit, and Modify, which changes the threshold.

Read the explanation first. If those controls are unfamiliar, follow the support advice in the safety box before choosing an override or a new limit. An exclamation mark here does not by itself name a failed part.

Choose the notification setting you actually mean

ecobee’s support page gives these paths:

• Thermostat: Main Menu, General, Reminders and Alerts, then Preferences.
• Smart Thermostat Lite and Essential: Main Menu, Reminders and Alerts, then Preferences.
• App: Home, Thermostat, Menu, Reminders and Alerts, then Alert Preferences or Reminder Preferences.

There are two different switches to watch. In ecobee’s Premium guide, Display Alerts on Thermostat hides messages on the screen while email and web portal alerts continue. Enable Heating/Cooling Alerts instead controls whether heating and cooling failure alerts are generated.

For a completed maintenance job, the Premium guide lets you update the last service, filter or lamp change date and its reminder interval. Put the real completion date there so the next reminder relates to work that was actually done.