⚠
warning Honeywell
Error Code Replace Battery
Low battery warning indicator that flashes on the display when batteries are running low and need replacement.
? What Causes This
AA alkaline batteries are depleted or nearing end of life.
✓ How to Fix It
- Install fresh AA alkaline batteries immediately when warning appears.
- If batteries are installed within two minutes, time and day will not need to be reset.
- Replace batteries once per year or before extended absences over one month.
Source: page 5 of the official manual
From the manual
Affected Honeywell Products
Honeywell TH6220D1028 Thermostat
Thermostats
Honeywell TH5220D1029 Thermostat
Thermostats
Honeywell 6000 Series Programmable Thermostat
Thermostats
Honeywell TH6110D Programmable Digital Thermostat
Thermostats
Honeywell T6220D Programmable Thermostat
Thermostats
Honeywell TH5110D Home Programmable Thermostat
Thermostats
Honeywell Focuspro TH5220D Thermostat
Thermostats