What does the triangle with an exclamation mark alert mean on the T4 Pro?
The triangle with an exclamation mark indicates a caution or alert message on the thermostat. To see the specific alert details, press the 'Menu' button until the alert screen appears, then press 'Select' to view the complete message.
Have a follow-up question?
AI-powered answers from the official manual. Verify critical info.
Common questions