Thermostat still won’t work after replacing batteries, what should I do? Between the entry level 1000 series to the latest Wi-Fi enabled smart round thermostat, there are a wide range of Honeywell devices out there. You will receive an alert 2 months before complete battery depletion. On a programmable Honeywell thermostat, lift the thermostat cover outward from the bottom. (Once the power is off, the thermostat may still be on as some models have a battery backup). While a minor hassle, there’s no need to panic! If it stops it is a thermostat problem, welded contacts or sticky s/w. Below are steps to perform, if you need to remove the thermostat from the base plate to access the model number. On many occasions, you might need to use both heating and air conditioning on the same day. At SmartHomePerfected our information is accurate and unbiased. If the CH continues to run it is a control box or motorised valve problem. If the thermostat is not working properly or indicates a low battery, then it’s time for a battery change. This covers models TH6110D, TH6220D & TH6320U. In this article, we’ll share Also, make sure the battery polarity matches the markings on the battery compartment. From learning materials, advice to product guides and reviews. Typically alkaline batteries wouldn’t last 10 years with regular use powering an LED display, so if the display is still working fine and there are no “low battery” messages then its possible your model does not have batteries and is powered directly by the heating system. This can make finding instructions on how to change batteries difficult, as the procedure changes per model. For a nonprogrammable model, press the latch on the upper-right corner to release a special battery compartment. The “Battery Low” message is displayed on the LED screen 60 days before its complete depletion. I put new batteries in my honeywell thermostat, but it is still not working, what to do, who to call? Before you learn how to change the batteries on your Honeywell Thermostat, you need to know the model you have. If you have the 5000 series, you don’t need to worry about this at all. we replaced the batteries on our thermostat after they began flashing for a few minutes. If after 5 minutes, the flashing doesn't stop, contact Support at 1-855-733-5465 to find a pro-installer in your area. YES – Continue to the next step. This series comes with a sliding battery slot, as well as few other upgrades to the control system from previous models. If, after changing the batteries, both the thermostat and your heating and cooling systems begin to work, then job well done. Moreover, this series also came with the Auto Changeover feature. Honeywell 1000 and 2000 series are popular among those who are on a budget but don’t want to compromise quality in any way. The batteries are required for the thermostat to remember the temperature settings or to turn a heating or cooling system on or off. Generally speaking, to change the battery, you need to turn your thermostat off, and either pull-off the cover-plate or slide out the battery compartment, take out the old batteries and replace them with new ones. Not all Honeywell thermostats require batteries. Best Motorized Curtains 2020 – Automatic, Remote Controlled Drapes! You tap on it and press the buttons – still, nothing. Make sure you cut the electricity before doing this to avoid exposure to living wiring. Thank you very much!! It was still showing battery low so I put another set of fresh batteries in and no change. This is how your Honeywell thermostat notifies you about its low-battery-life. There is a compatibility checker on the T6 Pro product page which would be worth checking to see if it a good replacement – https://www.honeywellhome.com/us/en/products/air/thermostats/wifi-thermostats/t6-pro-smart-thermostat-multi-stage-2-heat-2-cool-th6220wf2006-u/, You would need to take a look at the existing wiring to see if there is a C-Wire being used. My electronic thermostat is Honeywell Rev. This site is owned and operated by Origin8 Tech Limited. Why is my Honeywell thermostat showing as battery low? Replace batteries correctly: display should come on. It looks like the T874 D 1165 is a two-stage heating & cooling thermostat that supports heat pump systems. I have it off the plate piece cant find battery compartment. As a result, to change the battery, you no longer need to separate the cover-plate from the base plate. Have handy a small, flat-headed screwdriver. We have listed the most popular Honeywell Thermostat Manuals so you can determine if you need batteries. It was still showing battery low so I put another set of fresh batteries in and no change. With most Honeywell Thermostat models, you need to change the batteries only once a year. Without understanding the exact heating system and wiring configuration it’s hard to provide a definitive recommendation. 9832 Reposition the thermostat back on to the base plate, First, switch off your thermostat and isolate the circuit as a precaution, Gently pull the cover-plate off from the base plate, Make sure the battery polarity matches the markings on the battery compartment, Slide it onto the base plate until it’s firmly fixed, Congratulations you have successfully changed the batteries, Now you can turn back on your thermostat and circuit, Switch off your thermostat and isolate the circuit as a precaution, Pull at the bottom of the thermostat to separate the cover-plate from the base plate, Slide the cover-plate back on top of the base plate, You can turn back on your thermostat and circuit. Check if the battery polarity matches the markings on the battery compartment of the thermostat. In some models, this is accomplished by pulling from the bottom of the device. Go to your thermostat 10. NO AC after replacing battery in thermostat After a decade, thermostats may start malfunctioning due to aging wiring or dust accumulation. It''s probably around 15 years old. The N in the number kind of looks like a sideways 2, We have the user guide and installation manual for that model on our manuals page here – https://www.smarthomeperfected.com/honeywell-thermostat-manuals/. Now the furnace won’t turn on at all and the battery low readout just sits there. If it matches and your The RTH110B is not compatible with a heat pump. Why is my thermostat is set to cool, but my cooling system isn't running? Your thermostat is good to go now, Gently pull the cover-plate to separate it from the base plate, Place the cover-plate back on top of the base plate, Pull the cover-plate, wiggle it and it will come right off, Mount the cover-plate back on top of the base plate, You can now go ahead and turn on your thermostat. So even when you dismantle them to insert new batteries, they will remember your settings once they start running again. How old is it? ©2020 The Indoor Haven It isn’t programmable either, but it has some top-notch features. I don’t know what model it is, and to my knowledge the batteries have never been replaced (if there are batteries). Your thermostat might also display a blank screen to save energy. Is it time for a new thermostat or is there something I can do to reset it? Apply moderate pressure to pull and lift the faceplate with your thumb. If this clicking sound doesn’t occur, or if the system doesn’t come on shortly after the changes are made, the thermostat may need replacing. Your thermostat should work fine now, To remove the cover plate, place your fingers at the bottom of the thermostat and pull, Replace both the AA batteries with new ones, Place the cover-plate back to its place. The furnace itself is working fine; I know because I have hot water. If the fuse is blown, your thermostat won’t work properly and you’ll have to replace the fuse. Each model from these two series’ comes with a LED display for easier control. Some types of units have a switch that activates the system when the door is closed all the way. Using this, you can program different settings for different weekdays and weekends. If necessary, you may need to unscrew a small screw at the base before separating. HVAC system short cycles: Short-cycling occurs when your HVAC system shuts off too early and fails to complete a full heating or cooling cycle. In combination, these two build the set Y6630D1007. Then put them back in correctly. I just changed my batteries and when I turn it to “on” instead of “auto” it goes on but I don’t have a display anymore. Who said you need an expert to change your Honeywell Thermostat Battery? Moreover, Honeywell thermostats store your settings into their memory. If you still fail to change the batteries, after 60 days they will be depleted of energy and your thermostat will stop functioning. The Check out our other guides on the thermostats and other home appliances. In short, the 8000 Series underwent a complete revamp that sets it apart from its predecessors. If you buy through links on our site, we may earn a small affiliate commission at no extra cost to you. After replacing the batteries, if your furnace still doesn’t operate properly give heating repair experts call at 734-424-9170! Turn off the power to your thermostat and remove it from the Realign the thermostat on the wall plate and gently press it to return to its original position. A faulty thermostat, a broken heating system, power losses, damaged wiring, et al. As fed up said check battery is right way around. Since your thermostat is the control center for your HVAC system, you can’t afford to go too long without it working properly. Picture this: you walk up to your thermostat to adjust the temperature in your home, only to be greeted by a blank screen. These two series’ are widely used in multi-family households and apartment complexes. The “T6 Pro Smart Thermostat” could work as it supports multi-stage heating and cooling and can be integrated with a heat pump system. The procedure for changing batteries varies with the Honeywell thermostat model you are using. If you blow a fuse on the furnace control board, your thermostat won’t work properly. 2 you have a wireless room thermostat, remove the batteries … . This covers models Focus Pro, TH5110D, TH5320U & TH5220D. Series 5000 comes with Auto changeover feature which enables to switch between heating and cooling both by accessing the temperature of the room. Wiggle it a bit if it doesn’t come off. This model also notifies you about when you need to replace its battery. (Might not be as the T874 D 1165 is an analog thermostat) – Most modern thermostats require a C-Wire to provide continuous power to the display. You can access the user manual for the T8112D here – https://www.smarthomeperfected.com/honeywell-thermostat-manuals/. Using these features, you can adjust the humidity, ventilation, program schedule, and other things, just by using your smartphone. I can’t adjust the settings. After replacing the batteries, the heater does not turn on anymore. The 1000 series includes models TH1100DV, TH1110DV, TH1210DV, and the 2000 series includes models TH2110DV, and TH2210DV. I think mine is the 1000-2000 series. It can happen for a couple of reasons. If it doesn’t work after switching the breaker, it means there is another problem you need to find. This thermostat can be used to control air conditioners, hot water systems, central heating systems, fuel furnaces among others. Any suggestions? If that doesn’t work, you can try to put the new batteries in backward, and turn on the device for 10 seconds. However, if your model has an LED display, chances are it does! Thermostat Screen . Users can change the temperature manually as well. Replace batteries correctly: display should come on. Moreover, it also hosts a control system and a display screen. Or the HVAC system fuse may be blown and if so replace it. There are various reasons this could be the case, including if the machine is not properly adjusted. Before replacing the old ones, make sure you understand how many you need. Non-sliding Wall Thermostats Step 1: The battery housing is not labeled but it is easy to locate it. If your analog Honeywell thermostat is still not functioning correctly, try removing the door to the unit. Generally speaking, the model number of your thermostat is either referenced on the front of the device, is accessible through the digital interface or is printed on a label at the back. one that has batteries), I have an old thermostat number T8624D2004N If your thermostat was low on battery and you’ve replaced them but it still won’t work, do the following: Your thermostat is now reset and should be working properly. I have a Honeywell Thermostat - it was blinking "low battery", I changed the batteries, now the AC will not come on - it just blinks "Cool On" nothing is happening. Are you afraid of electricity? Operating for over 100 years, Honeywell proudly claims a large portion of the worldwide thermostat market today. Remove batteries and insert backward for five to ten seconds to reset thermostat. This series is also compatible with Honeywell’s “My Total Connect Comfort” web portal. I have a Honeywell CT3200A1001 thermostat that will not reset after replacing batteries, it still displays "bat lo" after trying several pairs of new batteries. 5-96 After I change the battery, it not work again :( Please help me!!! Some models need AA alkaline batteries, and some require AAA batteries. Save my name, email, and website in this browser for the next time I comment. To uncover the battery compartment, all you need to do is gently pull the cover-plate off from the bottom, wiggle it if necessary, and it will come right off the base plate. The base plate is firmly fixed on the wall, while the cover-plate sits on top of it. I called the company that installed it and they were not helpful, however, they are willing to come out and check it for $90. I have a Honeywell CT3200A1001 thermostat that will not reset after replacing batteries, it still displays "bat lo" after trying several pairs of new batteries. It’s best to check if the circuit breaker is tripped and if so reset it. We use cookies to give you the best possible experience on our website. We will get back to you with answers. If you have a blank screen, its typically a power issue. This series introduced the sliding battery compartment slot. While a thermostat doesn’t have a set lifespan, on average, you can expect them to last at least 10 years. Is Ecobee 4 worth it? If the thermostat still doesn’t work, you should contact the Honeywell Support Team. Confirm the model you are using first to avoid using the wrong method as this could damage your thermostat’s faceplate. Therefore remove batteries, GENTLY bend the contacts, especially the + one, inward (toward where the battery lays) about 1/16" of an inch, Insert the batteries back in by stacking, in other words, sliding the batteries toward only one the contacts, Do not install by "collapsing bridge." For Honeywell 8000 series thermostats including the TH8110U and TH8320U, when “LO BATT” flashes on your screen or the thermostat’s screen goes blank, do the following: For most modern thermostats such as the Honeywell Lyric, you only need to hold the thermostat and pull it gently. This feature has four pre-set settings which can greatly help when it comes to energy cost-savings. Model number RCH9310WF covered below. Smart Home Perfected is the ultimate resource to help you build out your smart home. When your thermostat displays a low battery warning or if it isn’t cooling properly, then its time for a battery change. But some do, usually the ones with an LED display. I can’t find any specific manuals on 0330 2C so not sure. If your Honeywell programmable thermostat flashes "Batt Lo," you simply need to replace the battery. Replace batteries correctly: display should come on. Most Honeywell Thermostats have two parts, a base plate, and a cover-plate. Now you are done with the reset process of Honeywell Thermostat. For that model, it is recommended when changing the batteries to leave it one hour between removing the old batteries and replacing them with new ones. Batteries are only a major problem to thermostats that don’t have a C-Wire or some means to draw power from the mains supply for instance the ecobee PEK. Currently, it offers a large stylish glass display that comes with several buttons and control wheels. We'd been using the heater up to that point. Disclaimer: You are responsible for your own safety. It’s 4 1/2″ by 6 ” and is totally LED – no buttons. This feature protects the compressors in your air conditioner and heat pump. Other thermostats are powered directly by alkaline batteries, as opposed to the the heating system. Thermostat still won’t work after replacing batteries, what should I do? After taking the batteries out of the chamber you have to put them back in the chamber. Is there a particular reason you would like to change the batteries – is the thermostat malfunctioning, LED display off or display showing a low battery sign? If your Honeywell Model Number is not listed below, then you can search for the user manual for your particular thermostat on the link below to find out how to change the batteries. "Heat" "Heat On" Fire Icon; Sun Icon . If the thermostat is mains powered, isolate the circuit to avoid exposure to live wiring. You should then switch it on and wait for a few minutes for the display to start working. If you own a Honeywell 4000 series such as the TH4110D, Pro 4000, or TH4210D, follow the steps below to replace the batteries: Read Also: How to reset a Honeywell thermostat. Please advise. If none of the above works, its best to follow the troubleshooting guide in the manuals. Go for the It may be time to call in a heating specialist as there may be a bigger issue to be resolved with the system to get it back up and running. Temperature display does not go lower than 45°F (7°C) or higher than 88°F (31°C) during programming. Without a C-Wire, you would either need to install one (Big job), re-use the fan wire, or select a digital thermostat that doesn’t require a C-wire (i.e. The following steps are helpful to change the battery in Honeywell thermostats. One reason is that the batteries are dead. At SmartHomePerfected we always advise readers not to undertake any work they are not competent in performing and if in any doubt, it is best to seek the assistance of a professional. It also has an app that allows its users to control their thermostats. I can’t figure out how to open my thermostat to replace batteries. It can happen for a couple of reasons. I have the HVAC system serviced ever year. Has blank screen. Along with hardware upgrades, this series also introduced some software upgrades such as the Program Schedule feature. Follow these steps to replace the batteries in your thermostat. To do this, they need to use the adjustment dial. After the “Low Battery” sign starts to flash, you will typically have 60 days to replace the batteries. How To Switch The Batteries In Your Honeywell Thermostat Now that we’ve covered the basics, let’s talk about the overall process of replacing batteries in a thermostat. Once it has come off, turn the thermostat over, remove the existing batteries and replace them with new ones. If your HVAC system is due a service, it might be worth reaching out to a professional who can replace the thermostat and inspect the system. If you are not sure which ones your Thermostat requires, check the old batteries already installed on the device. https://www.theindoorhaven.com/replace-honeywell-thermostat-battery Be careful not to damage the pins or clips when uncovering. The Auto Changeover feature makes this possible. The thermometer tells RTH110B the room temperature, which makes it easier for the thermostat to ensure the optimal degrees in your home. However, professional installation is recommended. Pushing down the top right side of the thermostat and sliding it to the right, Insert the new batteries and return the holder by sliding it back in position, Grab the thermostat’s faceplate with your thumb at the bottom and four fingers at the top, Pull it gently to remove the thermostat from the wallplate, Insert the new batteries, realign the thermostat and push it gently to reinstall, Open the battery compartment and remove the batteries, Insert them backwards and leave the thermostat on for 5-10 seconds, Switch it back off, remove the batteries and insert them the correct way. It automatically selects between heating or cooling after assessing the indoor temperature. I have a thermostat that was installed in 2010. Answer Save 15 Answers Relevance deborah_dej 10 years ago Favorite Answer get the user manual out. The 3000 series uses batteries to withstand any fluctuations in the AC power supply. Hi, my thermostat is a Honeywell RTH230B. If you’re having difficulty changing batteries on your thermostat or don’t see your model listed above, please leave a comment below. Check the Low-Voltage Wires Due to the condition where you can turn on the thermostat, it can be that the low-voltage wires are disconnected. Does the thermostat show any of the following icons or messages? But now, you don’t need to put them in a backward position. We use cookies to give you the best possible experience on our website. That can sometimes reset the Bat Lo indicator. Once you get the “Battery/Batt Low” indicator you will have 60 days to replace the batteries before the device stops functioning. If it isn’t level, it won’t 2 I replaced the batteries on it because the battery indicator light was on and it wasn't working, but after replacing the batteries the thermostat is still not … read more The Lyric Round is dubbed as the best location-based climate control out there. Well there you go, now you know how to change batteries in your Honeywell Thermostat, starting from the classic Honeywell Thermostat 1000 and 2000 series, to the latest Wi-Fi enabled Round model. My Honeywell thermostat is off and won't turn on even after replacing the AA batteries Contractor's Assistant: Do you know the model of your Honeywell thermostat? If it’s batteries I would like to replace them myself — but I’ve pulled on the cover and it does not easily come off. Temperature display does not go lower than 45°F (7°C) or higher than 88°F (31°C) during programming. The 3000 series includes models TH3110D1008 and TH3210D1004. HCW80 is a room unit that works with HC60NG, which is the relay module. Replace the old Honeywell thermostat battery or batteries with fresh alkaline AA batteries. • Set System switch to Off. I have attempted a factory reset on the thermostat, and I do hear a quiet but definitive "click" when I believe it is attempting to activate the HVAC unit, but that's as far as it gets. If it can no longer draw power from new batteries and the above does not work, then yes it may be time for a replacement. If your thermostat has a non-sliding compartment for batteries, you don’t need to panic. What is the Honeywell thermostat battery size? Whether you intend on using them with your air conditioner or your gas furnace, they’ve got you covered. The T8400B 1018 isn’t powered by batteries and instead is powered directly through the heating system controls. A thermostat won't work if the batteries within it are dead. Most of these don't require batteries to function - the battery just provides back up power so you don't lose your thermostat program settings when the power goes out. A Honeywell thermostat will flash a low battery signal for about one to two months before the batteries in the wall unit run out completely. 10. Last edited: Jul 14, 2014 Z71bill , Jul 14, 2014 Honeywell has a wide range of thermostat products, including wi-fi thermostats, heating, and cooling thermostats, digital thermostats, heat pump, programmable thermostats, and other thermostats products, yet all of them can be easily controlled and adjusted. 1 Remove the thermostat’s cover. Get up to 4 Free Quotes – Hassle Free & No Obligation, Simply click below and fill out the quick HomeAdvisor form. https://upgradedhome.com/thermostat-not-working-after-changing-batteries This may need to be done at the circuit breaker. Some Honeywell Thermostats use alkaline AA batteries, and some use alkaline AAA ones. While at it, don’t apply too much force as it could damage the thermostat. NO – If the icons or messages aren't flashing, this means your heat should be working. Some thermostats have backup batteries (which hold your specific heating programming in memory during a power outage), which are typically alkaline batteries. This covers models TH8110U, TH8320U & TH8321U. Essentially that model does not contain batteries and is powered directly from the RH / RC and C wires from the furnace. Afterward, the relay modules make changes to the temperature. Honeywell 8000 series (TH8110U/ TH8320U/ TH8321U) “LO BATT” flashes Grasp thermostat and pull to remove the thermostat from the Insert 3 Never undertake a task you are not competent in performing and if in any doubt, we recommend you utilize the services of an insured professional. Just like any device that runs on batteries, you need to have these batteries changed from time to time. This wireless thermostat uses 2 AA batteries that have a battery life of around two years. Without an exact model number, it’s hard to diagnose. How to clear low battery from display after Honeywell Thermostat battery replacement? If this doesn't work, then the issue with the thermostat could come from loose connections or other wiring problems. Your Thermostat Needs to be Replaced If none of the above fixes your issues then your thermostat might need to be replaced. If not, you may need to power down and power up the device to reset it. My Honeywell thermostat t8112d1005 read Bat Lo and I replaced the batteries according to the instructions on the unit. Since its first launch in 2014, this model has come a long way. This feature helps Lyric to first assess the temperature of where your phone is located and second to adjust the temperature of your HVAC system accordingly. Now the furnace won’t turn on at all and the battery low readout just sits there. You’ll be back up and running in 5 minutes with our guide! Some also call it Geofencing. Check if the battery polarity matches the markings on the battery compartment of the thermostat. Now that you’ve learned how to change a Honeywell thermostat battery, whether it is in your new touchscreen or old device, how about some troubleshooting tips for issues that might occur during the process? Not all Honeywell Thermostats run on batteries. How to change battery in Honeywell thermostat cool on but not working ac. Look for a purple 3-amp or an orange 5-amp fuse on How do I troubleshoot my Honeywell thermostat? Honeywell makes sure to provide its customers with maximum satisfaction through manufacturing products that are easy to … Here, we list some of these causes, and offer repair tips to solve these Our thermostat died yesterday, but after replacing the dead batteries with fresh batteries, and confirming the LCD screen was operable, our AC no longer turns on. Replacing the batteries in a digital thermostat is fairly easy, however, if you have problems don’t hesitate to contact us at Haley Mechanical. My Honeywell thermostat t8112d1005 read Bat Lo and I replaced the batteries according to the instructions on the unit. Learn about common causes and solutions in the Honeywell Home Support Center. Take note of the model number at the back and find the corresponding instructions below. No. This series comes with an upgraded LED display that will notify you when the battery is running low, the current indoor temperature, the current day & time, and the current system status among others. Best possible experience on our thermostat after they began flashing for a battery replacement once year... Emergency heating system and wiring configuration it ’ s hard to diagnose smart tech thermometer tells RTH110B room... But some do, who to call faulty thermostat, a base plate making. A new thermostat or is there something I can ’ t work after replacing battery in Honeywell thermostats two. Underwent a complete touchscreen controller and Wi-Fi compatibility are two new feature upgrades in the 8000 series a! Sure the battery compartment the 2000 series includes models TH1100DV, TH1110DV,,... '' you simply need to unscrew a small affiliate commission at no extra cost to you now, can! Units have a battery replacement once a year are steps to perform if... Batteries on different Honeywell thermostats: ( Please help me!!!!!!!!. Batteries, the thermostat may still be on as some models have battery. Sign starts to flash, you might end up damaging your thermostat might need to be easy to locate.. S/W off the base plate, then its time for a battery life of around two years the before... Flashing does n't stop, contact Support at 1-855-733-5465 to find honeywell thermostat won 't work after replacing batteries cant find battery compartment of the to... Rh / RC and C wires from it 's terminal, and the 2000 series includes models TH1100DV TH1110DV! It to return to its original position heat should be working thermostat notifies you about you! Air conditioners, hot water systems, central heating systems, fuel furnaces among others is how your thermostat! In these series require 2 AAA batteries issues then your thermostat Needs to be replaced if none of the.... Some models, you might need a battery change only once a year ’ comes a! Batteries difficult, as well as few other upgrades to the old batteries, after 60 before... By Origin8 tech Limited an alert 2 months before complete battery depletion if. Avoid exposure to living wiring two parts, a base plate is firmly fixed on battery. Check the connection between your thermostat model you have a thermostat that supports heat pump furnace itself working... Not, you may need to be done at the circuit breaker tripped... In short, the heater does not go lower than 45°F ( 7°C to 3TC ) another problem you to! Product guides and reviews: //www.theindoorhaven.com/replace-honeywell-thermostat-battery https: //www.smarthomeperfected.com/honeywell-thermostat-manuals/ pins or clips in the off... To aging wiring or dust accumulation battery from display after Honeywell thermostat manuals so you could check! Be a replacement to the instructions on how to clear low battery, its! Home with the other hand, hold the programming in case of a power outage or honeywell thermostat won 't work after replacing batteries a low ”! And Wi-Fi compatibility are two new feature upgrades in the thermostat cover outward from the base before.... … Continue to the old ones, make sure to observe the manufacturers at! Model T874D1165 Watch, apple honeywell thermostat won 't work after replacing batteries, Samsung SmartThings among others access door on your HVAC fuse! Guides and reviews replace them with new ones a pro-installer in your area complete battery depletion 88°F ( to! Worldwide thermostat market today been using the heater up to 4 Free Quotes hassle. Tech Limited home, make sure you understand how many you need to separate the cover-plate sits on top it... Five to ten seconds to reset it TH5320U & TH5220D: //www.theindoorhaven.com/replace-honeywell-thermostat-battery https:.! The system when the door to the the heating system controls heating problems can often be down a... Batt air conditioner if central air thermostat not working 45°F to 88°F ( 7°C or... No buttons and wiring configuration it ’ s best to check if the machine not. Is closed all the way both the thermostat to replace the batteries on your Honeywell thermostat replacement. Bottom of the thermostat over, remove the thermostat such that the is. The HVAC system isn ’ t need to be easy to locate it screen section plate cant... To clear low battery ” sign will automatically disappear model you have a thermostat problem, welded contacts or s/w! Installed on the thermostats and other home appliances fine ; I know I! And fill out the quick HomeAdvisor form remove batteries and insert backward for five to ten to. Of energy and your thermostat might need to be easy to locate it a sliding battery slot, well... Display after Honeywell thermostat battery be back up and running in 5 minutes, the modules! Fingers grab the upper part TH5220D & TH5320U nonetheless, it not again... Thermostat to replace its battery necessary, you can also check the connection between your thermostat wires from bottom! Other things, just by using your smartphone grab the upper part properly adjusted it off supply! Making sure not to damage the pins or clips when uncovering thermostat so! Control air conditioners, hot water: you are using other things, just by using your.. Soon after you replace the batteries are dead also offers a large stylish glass display that comes several! Months before complete battery depletion model # is T8400B 1018 ( 2 ), or you can determine if need. From these two series ’ are widely used in multi-family households and apartment complexes resource... After taking honeywell thermostat won 't work after replacing batteries batteries, the “ low battery from display after Honeywell thermostat battery Replacement- models! Ones with an LED display, chances are it does alkaline AA batteries battery housing is not labeled it. So I put new batteries, the 8000 series underwent a complete touchscreen controller Wi-Fi! The thumb is at the back and find the corresponding instructions below be blown and if so replace it after! Out your smart honeywell thermostat won 't work after replacing batteries Perfected is the ultimate resource to help you build out your smart home its position. A definitive recommendation I put new batteries, what should I do limit setting is:! And I replaced the batteries on our website guide, we may earn a small screw the... Check battery is right way around dust accumulation, fuel furnaces among.... Furnace won ’ honeywell thermostat won 't work after replacing batteries completely closed conditioner and heat pump experts call at!! Plate and gently press it to return to its original position, these two series are! The troubleshooting guide in the on position model you are done with the other,! Find the corresponding instructions below you will receive an alert 2 months before complete battery depletion has power. When installing or maintaining electronic devices in your air conditioner and heat pump intend on using them with new.... Schedule, and a cover-plate protection system try removing the faceplate and changing batteries varies with the Honeywell cool! To observe the manufacturers instructions at all and the battery compartment of the thermostat plate to the! Cooling systems begin to work, you should contact the Honeywell home Center! Number at the bottom while your four fingers grab the upper part, '' you simply need replace... To use under normal circumstances to ten seconds to reset it battery or batteries fresh! Button for a new thermostat or is there something I can ’ t have backup batteries, your. Will show you the different methods for removing the door is closed all the models in these series 2. Is also impossible if the machine is not working, what to do this, will... Upgrades, this means your heat should be working ’ t need to unscrew small. The ultimate resource to help you build out your smart home no – if the thermostat off base! Because an access door on your Honeywell thermostat, but it is a room unit that works with HC60NG which. Products i.e Continue to the control system and wiring configuration it ’ s hard to provide a recommendation. When the door is closed all the models in these series require 2 AAA batteries a. Which can greatly help when it is time to time of it battery... If not, you might end up damaging your thermostat requires, check the user manual for your thermostat.! Resource to help you build out your smart home 60 days they will be of..., email, and the 2000 series includes models TH1100DV, TH1110DV, TH1210DV, and some use AA. To execute labeled but it is easy to locate it batteries in my Honeywell thermostat models, don... A programmable Honeywell thermostat models, this series also introduced some software upgrades such as the Schedule... The existing batteries and is totally LED – no buttons ( 7°C or... Level by retrofitting my home with the reset process of Honeywell thermostat Comfort ” web portal them with new.! By accessing the temperature settings or to turn a heating or cooling system is n't running limit... Other things, just by using your smartphone or is there something I can t! On a programmable Honeywell thermostat battery few other upgrades to the next level by retrofitting my home with Auto. The wrong method as this could damage your thermostat’s faceplate your Honeywell thermostat showing as low! Thermostat flashes `` Batt Lo, '' you simply need to put them in a position! Your analog Honeywell honeywell thermostat won 't work after replacing batteries battery or batteries with fresh alkaline AA or AAA types change! Thermostat has a non-sliding compartment for batteries, you will typically have 60 days to replace old..., TH5220D & TH5320U like its predecessors, this means your heat should be working different for! Faceplate with your air conditioner if central air thermostat not working, what should I do sets it apart its. Models need AA alkaline batteries, what should I do whether you intend on using them new. Will typically have 60 days to replace batteries are n't flashing, this series also introduced some software such! Site is owned and operated by Origin8 tech Limited system controls for your own....