Some Honeywell thermostat models run by using a battery, and some do not. If your thermostat has an LED display, there is a big chance that it does. Similar to devices that use batteries to operate, the battery in a Honeywell thermostat needs to be changed in a certain time period.
Here is the tutorial on how to replace the Thermostat battery if you have no idea how to do it.
Honeywell Thermostat Battery Replacement
When you find that your Honeywell thermostat battery is low and you need to replace it, it’s necessary to know about the type of Honeywell thermostat first. In general, you can locate the model number that’s imprinted on the front or back part of the device.
Besides, it’s also accessible from a digital interface.
When you find that your Honeywell thermostat battery is low and you need to replace it, it’s necessary to know about the type of Honeywell thermostat first. In general, you can locate the model number that’s imprinted on the front or back part of the device. Besides, it’s also accessible from a digital interface.
Some thermostat models require AA or AAA alkaline batteries. Read about the steps you need to do if you’re going to replace with a new battery:
Honeywell 4000 series
4000 series include Th4110D and TH4210D models. They will flash “REPLACE BATT” when the battery needs replacement.
- Remove the old batteries by pulling the bottom part of your thermostat device.
- After it is removed, turn the device over and put a couple of new AA batteries inside to correctly match the positive and negative ends.
- Put the thermostat back in its original place.
It is always wise to consult the user manual for specific instructions tailored to your model. Additionally, when your device starts to flash a low battery sign, you have 60 days before the batteries need to be urgently replaced to prevent your device from losing functionality.
Honeywell 6000 Series (TH6110D/ TH6220D/ TH6320U)
6000 series include TH6110D, TH6220D, and TH6320U models. They will also flash “REPLACE BATT” when needed to be replaced. For the 6000 series model, it is recommended that batteries be changed every year.
- Press the battery holder that’s located at the top right part and then pull to remove it.
- Put inside a couple of new AA batteries, making sure the positive and negative ends are properly aligned, then place back the battery holder.
- You do not need to reset the day and time setting if the batteries are inputted in two minutes.
Honeywell 8000 series
8000 series include TH8110U, TH8320U, and TH8321U models. They will flash “LOW BATT” when the battery needs replacement. For the 8000 series model, it is also recommended that batteries be changed every year.
If your Honeywell thermostat says low battery with new batteries, then you might want to reset the system. If a simple reset won’t do, the cut its power, and the device will reset itself.
Now, there are some possible reasons why your battery replacement is not working. First, the battery polarity might not match the compartment inside the thermostat. Second, your battery might drain, so try to use it in another battery-powered device.
When your device starts to flash a low battery sign, there is a 60-day period to do a Honeywell thermostat battery replacement. After 60 days without any replacement, the device might be drained of energy and stop functioning altogether.
