Thermostat Troubleshooting- Battery Replacement


When the Replace Battery warning beings to flash, it typically means you have a couple of months before the batteries will deplete. 
 
Honeywell 4000 series (Th4110D/ TH4210D)
REPLACE BATT flashes
• To remove and replace the batteries, pull at the bottom of the thermostat to remove it from the wallplate.
• Once removed, turn the thermostat over and insert 2 fresh AA batteries, and then reinstall the thermostat on the wallplate. 
 
Honeywell 6000 series (TH6110D/ TH6220D/ TH6320U)
REPLACE BATTERY flashes
• Press and pull to remove the battery holder at the top right of the thermostat.
• Insert 2 fresh AA batteries and then reinstall battery holder.
• It is suggested to replace the batteries once a year. If batteries are inserted within two minutes, the day and time will not have to be reset. 
 
Honeywell 8000 series (TH8110U/ TH8320U/ TH8321U)
LO BATT flashes
• Grasp thermostat and pull to remove the thermostat from the wallplate.
• Insert 3 fresh AAA batteries and reinstall the thermostat on the wallplate. It is suggested to replace the batteries once a year.

Please contact us today regarding troubleshooting your thermostat.