⚠
warning Honeywell
Error Code Triangle with exclamation mark
Caution or alert message indicator — the thermostat is signaling a warning or alert condition that requires attention.
? What Causes This
Various system alerts or warning conditions detected by the thermostat.
✓ How to Fix It
- Press the Menu button until the alert screen appears.
- Press Select to view the specific alert message.
- Address the issue indicated by the alert.
This error code appears in:
Honeywell T4 Pro Thermostat