⚠
warning Honeywell
Error Code LO BATT
Low battery indicator — the installed batteries are low and need to be replaced soon.
? What Causes This
Battery power has been depleted after extended use.
✓ How to Fix It
- Remove the thermostat from the wall plate.
- Replace with fresh AAA alkaline batteries, observing correct polarity.
- Reattach the thermostat to the wall plate.