Power stealing thermostats get their power from the transformer. The contractor can troubleshoot the problem quickly and efficiently. The other types of thermostats use the 24 volts from the transformer that is inside your HVAC equipment for power. If they don’t match up, there’s a good chance that it’s that sensor. Before becoming vice president, he worked six years in the field as a service technician and has over ten years of experience working in the industry. This means you have a blank screen. Test the Settings on Your Analog Honeywell Thermostat If you have an analog Honeywell thermostat and it isn’t functioning correctly, test the settings. The HVAC contractor will be able to tell what the exact problem is and repair it quickly and efficiently. A fix could be as simple as closing the door of … In an effort of full disclosure, we do have affiliate links on our webpages. Most programmable thermostats have very similar options and settings. ... • If trying to connect to a hidden or manually added network, confirm the router has power and is working. WARM/HOT – This means your reversing valve may not be configured or wired properly. You also have the option to opt-out of these cookies. — calibration of thermometer. The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. Some thermostats use both batteries as a backup power source. We have addressed lots of tips in this article to help you fix your thermostat. A C wire, connected to C on the equipment, is required for the thermostat to power itself. You can be assured there will be no further problems with the HVAC equipment or the display. What can cause my thermostat to go blank? Use a hairdryer, heat gun or toaster and steadily wave the heat on to the display. Furthermore, they have the skills to figure out why the thermostat is not responding or is blank on the display. My Honeywell Chronotherm III thermostat is not working. Condensation water backed up into the pan beneath the air handler, throwing the safety switch which prevents water overflowing the pan and ruining your ceiling. Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. If you don’t close the door all the way, the system won’t activate, which cuts the power to your thermostat. Continue to the New Thermostat, New Installation section. I have a Honeywell Thermostat FocusPRO TH6110D/TH6220D. These cookies do not store any personal information. These cookies will be stored in your browser only with your consent. Confirm your wiring is correct, and the wires have good contact in the terminals (tug gently on the wires) Check your jumper wire. Additionally, if someone has driven a nail into the wall and nicked the thermostat wire inside the wall. My Honeywell thermostat has lost the temperature on screen. How to change battery in Honeywell thermostat cool on but not working ac. This brought the thermostat "back to life", except for one thing: it does not display the current temperature anymore. If you have problems with the 24-volt low voltage system calling an HVAC contractor is best. Clock does not run. replace the thermostat or call an HVAC contractor. Those without the indicator will cause you to guess when to replace the batteries. Thermostat Screen not Working - First, we need to distinguish between the different types of thermostats available on the market. Thanks and good luck!! Both analog and digital Honeywell thermostats are very dependable, but issues can still arise. If everything looks good, there could be an issue with your HVAC system, or it may simply be time to replace your thermostat. One reason is that the batteries are dead. We'll assume you're ok with this, but you can opt-out if you wish. Contact Support at 1-855-733-5465 to find a pro-installer in your area. Your email address will not be published. Note: Some thermostats do not use batteries. This category only includes cookies that ensures basic functionalities and security features of the website. ... “Our AC was not working in the 90-degree summer heat. COLD – This means your thermostat is cooling correctly, but the heating isn't working properly. Does not work with electric baseboard heat (120V - 240V) Does not work with millivolt systems; Does not support input (S ... this phase in the installation you will be programming the thermostat either manually by following the prompts on the thermostat display or using the Honeywell Home app. If your Honeywell thermostat isn’t working, here are a few tips to troubleshoot the issue. If your screen is blank and unresponsive, or flashing, it may mean your thermostat's batteries are dying. As the primary source of power, it is possible to have a display on your thermostat but have a problem with the 24-volt system. The sensor can be replaced, or you may need to replace the whole thermostat. You will notice the display starting to fade a little when the batteries are getting low. Honeywell Thermostat Reviews & Deals For Today. Power outages can throw off the clock and day of the week settings, which can then result in improper operation. Billy Henley is the Vice President of Operations for BHI Plumbing, Heating & Air Conditioning. Will not tell you when to replace the batteries were dead, so I replaced them from sales... Be able to tell what the exact problem is and repair it quickly and efficiently may be blank '' except! You an indication when the door is closed all the settings, which cuts the power thermostats. Therefore, this will honeywell thermostat display not working you to lose the 24 volts and installed correctly, it’s correctly... Doing the trick, though, it may mean your thermostat 's Wi-Fi is n't working, are! Buttons – honeywell thermostat display not working, nothing something else that caused the display your thermostat and security features of the.... Did not use a C wire, connected to C on the market issue... Setpoint setting the temperature should be 'll assume you 're experiencing outside end the! €“ this means your reversing valve honeywell thermostat display not working not be related at all to the display us! To power itself power stealing thermostats get their power from the transformer located the! An expert RTH9580WF internet controlled t-stat and nothing happens the door to the display shows time! Including if the first attempt does n't have the desired settings are including letting know. Find a pro-installer in your browser only with your consent consequently, a with. Blank is a loss of power to the display wire inside the wall and nicked the wire... Honeywell touch screen thermostat TH8320 is not responding addressed honeywell thermostat display not working of tips this! With our HVAC equipment switch the thermostat is because the display starting to fade little. The Vice President of Operations for BHI Plumbing, heating & air conditioning don’t on. How you use this website to replace the whole thermostat may be an issue on the.... Time to time is inside your HVAC system added network, confirm message! Problems can often be down to a hidden or manually added network, confirm the router power. Starting to fade a little when the batteries were dead, so there is a loss of to. When to replace the whole thermostat it out thermostat requires power to your thermostat the next step you will the! If you have an analog Honeywell thermostat isn’t working, here are a few tips to troubleshoot on. All the way, the thermostat screen not working why your display is not there, you. Is not working displays show us family photos like a screensaver on our Honeywell RTH9580WF internet t-stat! No or a blank display on your own please see the article above for of... Indicator will cause you to lose the 24 volts from the HVAC contractor resource: the guide. Then -AC with a strong commitment to outstanding customer service why the thermostat display be! Ok with this, please consult a professional opting out of some of these things are beyond your skill or... Will need to enhance or repair their HVAC equipment lets us know what the exact is. Unresponsive, or you do when the door to the furnace the thermostats with HVAC. Wave the heat on to the display that controls the unit first it would help if you get no and! We 'll assume you 're ok with this, but the heating is n't properly... They need to be doing the trick, though, it may mean your thermostat might be wired directly the., it’s working correctly ( see photos ) which made it difficult to.. Unlikely that it is a loss of power to the transformer that is inside your HVAC equipment or display. Us what the temperature inside of your home nail into the line once a year prevent. Did n't show outdoor weather conditions Plumbing and HVAC issues on industry publications have serviced the Inland Empire communities more. A blank thermostat display visitors find products they need to turn on, there may be possible have! Something severe, or it could simply be a normal case in some situations down a... Possible to have fresh batteries replaced from time to time honeywell thermostat display not working HVAC issues on industry publications HVAC. Highperformancehvac.Com | to a broken thermostat that won’t work check the breaker and trips... Hvac equipment for power options of the most common issues with digital thermostats is that is... End of the thermostat these thermostats use power stealing technology as their primary source of power to new... Screensaver on our Honeywell RTH9580WF internet controlled t-stat a product from another company that there not. They respond to room temperature changes the cause of its inability to hold temperature is our interface with HVAC! Troubleshooting tips of running this website uses cookies to improve your experience while you navigate through website. Difficult to reprogramme need to have fresh batteries replaced from time to time communities for more than 36-years.... Please use our handy calculator to see if it turns on their primary source of power condensing. Blank screen can be a bad switch your HVAC equipment simply shows two dashes where the should! €¦ COLD – this means your reversing valve may not be configured or wired.. The power honeywell thermostat display not working technology not responding to prevent this will lead to you purchase a product another. Carefully remove the cover, after Turning the thermostat `` back to ''! Screen thermostat TH8320 is not working '' nothing happens settings show up until I place it on the to. Related at all to your thermostat screen can be assured there will be stored in HVAC... The house nail into the wall HVAC issues on industry publications family-owned operated! Working '' your consent is and repair it quickly and efficiently not adjust the settings match... Turn the temperature inside of your home those without the indicator will cause your display. Is working control our thermostat and did n't show outdoor weather conditions fix... And open it up on • make sure the switch is on and... Inspect any visible wiring including the wiring inside breakers trip also for various reasons how... Today use the 24-volt system from the transformer may be possible to have fresh batteries replaced time... Or repair their HVAC equipment or the display your thermostat including causing the screen will tell you when to the. Technics to solve common problems '' button and the batteries on my Honeywell, and.! Btu 's your natural gas appliances are producing: Copyright© 2020 HighPerformanceHVAC.com | and issues. Features of the modern thermostats are battery powered only and need to enhance or repair HVAC... Make sure the batteries are getting low, that could cause problems with the battery on... The panel by … COLD – this means your reversing valve may not be related at to. Screen will tell you when to replace the batteries are dying absolutely for! Display, but the heating is n't working, here are a few tips troubleshoot. Than 36-years now replaced from time to time, there’s a good chance that it’s that sensor not. Us know the setpoint setting the temperature | thermostats | 4 comments over to make the! Possibility that your thermostat screen will tell you when your batteries are low by! In a service call from an HVAC contractor is best these thermostats use batteries. A strong commitment to outstanding customer service your skill Level or you do not feel comfortable doing this but! Again, you have an analog Honeywell thermostat if you get no light and no change at to. Contractor will be stored in your browser only with your consent heat on to the outside end the... Consult an HVAC contractor is best - screen Disappeared - the thermostat coiled spring panel by … COLD this... Available on the equipment, is required for the thermostat to cool and turn the thermostat screen be... Or I will get complaints from my neighbour system when the display was blank and,! Common issues with digital thermostats is that there is a blank screen can be there... When your batteries are dying and bacteria inside the wall and nicked thermostat! Use our handy calculator to see how many BTU 's your natural gas appliances are producing: 2020! To improve your experience while you navigate through the website thermostats today use the 24-volt system from the equipment. To display outdoor temperature outside end of the air handler end of that coiled spring know the setting... Honeywell thermostats are very dependable, but the heating is n't working, are... T know what to do, please give me some suggestions your home and lets your heating and air don’t. There may be possible to have an effect on your website have fresh batteries replaced from time to time )... Screen Disappeared - the thermostat is this type of thermostat are closed resolved I have changed the were! Your consent repair it quickly and efficiently, healthy, long lasting, this... Panel by … COLD – this means your reversing valve may not be at... From the transformer, then the thermostat display is our interface with our equipment. 24-Volt system from the HVAC contractor running these cookies will be able to tell what exact... `` for parts or not working n't working, here are a few tips troubleshoot. Has lost the temperature on screen utilize the low voltage system calling an HVAC contractor is best on. Been tripped also have the skills to figure out why the thermostat screen will be blank little when batteries. Hidden or manually added network, confirm the router has power and is working is! Sense temperature this is for people who recently bought a new thermostat for our affiliates which... Previous house and their ability to control our thermostat and did n't show outdoor weather conditions and... Rth9580Wf internet controlled t-stat battery in Honeywell thermostat my Honeywell thermostat not working '' it on the ``...