This happens automatically. It will turn back on when it senses someone is nearby or when someone uses the app to control it. you will see AUX HEAT indicator in the display. Although a blank thermostat can indicate a more serious problem, sometimes it is a minor issue that can be easily fixed. While this can be scary, especially in the dead of winter or summer, it does not necessarily mean your HVAC system is shot. My thermostat went completely blank (it is not battery operated). Your Nest Thermostat will now restart and the process only takes a couple of minutes. I checked the box (circuit box I think) by the AC unit and it didn't have any fuses. When your Honeywell thermostat says wait for longer than five minutes, it is … When your screen is blank, it could indicate you need to replace the batteries. You tap on it and press the buttons – still, nothing. Checked breakers inside and outside the house. Without it, you have no way to change the temperature in the house or even turn your air conditioning and heating system on and off. If auxiliary heat is on. If the screen is blank, you can’t program your cooling and heating settings. If Your Nest Is Completely Unresponsive. Comes back on by itself sometimes in minutes, sometimes in hours. Generally, a thermostat can last you 10 to 20 years or even longer, but when the screen goes blank, your furnace shuts off, and the battery nor the fuse or circuit breaker are to blame, it’s possible that your thermostat itself may have finally just died. That being said, it can be more than a little concerning when you go to turn on your AC and find a blank thermostat. Your thermostat will stop working and this will in turn affect the performance of your heating and cooling system. NOTE: This indicator does not mean there is a problem with your system If your thermostat does run on AC power (the wires in your walls) then a blank screen is usually an indication that the power has gone out. Whether you have a Trane thermostat , Honeywell, Carrier, or other name brand, there are often simple causes and steps you can take as a homeowner to troubleshoot your thermostat issue. When this happens, your outdoor unit will shut off and send a signal to your thermostat, causing it to blink. I will tell you each and every reason why your thermostat behaves like this. When your screen is blank, it could indicate you need to replace the batteries. The display tells us what the desired settings are including letting us know the setpoint setting the temperature. If you see “about:blank” in your web browser’s address bar, you’re viewing an empty page built into your web browser. Some steps for troubleshooting your AC, or heat, with blank thermostat. Is your home’s thermostat screen blank, flashing, or simply not working? Hey all, My central air stopped working completely this evening (its less than a year old). It could simply be that your transformer is bad and needs a replacement, or an animal could have gotten into your attic and chewed wires. Performing a Braeburn thermostat reset is a fairly straight-forward endeavor that can return the comfort level back to your home. Why Your Digital Thermostat’s Screen Has Gone Blank The thermostat is a key part of your home’s HVAC system, although it is easy to take its operation for granted. Something similar can occur with modern digital thermostats. Longer Wait Status. Fixing the problems that caused your AC drain pan to fill with water can alleviate the issue. It is the one device that can control the temperature in your home. If the panel is blank, the cool air won't blow or the hot air won't stop, a simple solution could be to check the workings of the thermostat on the wall inside the home. When I push the test monthly button on my thermostat, the screen goes red and tells me to call Warmup. I tried unplugging thermostat from wall mount, then plugging it back in. Blank Screen - the screen of the Wiser Room Thermostat is designed to time out several seconds after use, in order to save battery life. If you experience technical problems with Lux thermostat, use a manual on this page – different models are covered. Refer to your manual to see if you need to reset the float switch. When my screen goes dark, will my floor continue to heat? Your thermostat should automatically turn on once it’s connected to your system and your system is powered up. In this common scenario, the wait message you receive is actually beneficial for both you and your unit. Sometimes it comes back on, sometimes not. Nothing on the display. Since your thermostat is the control center for your HVAC system, you can’t afford to go too long without it working properly. No - Answered by a verified HVAC Technician Reasons That Your Thermostat Screen Has Gone Blank The thermostat is an essential part of your home’s HVAC system. What else could cause a blank display? If your thermostat wall does not have a c-wire, or common wire, your thermostat is most likely not hooked up to your heating, ventilation, and air conditioning (HVAC) system for its power and requires batteries. Below is an actual conversation. My -Rodgers thermostat just went blank. If your thermostat wall does not have a c-wire, or common wire, your thermostat most likely is not hooked up to your HVAC system for its power and needs batteries. Another problem which may cause your thermostat not reaching set temperature is that maybe your thermostat lost its power. Signs That Thermostat Batteries Are Dead In order to save yourself the trouble of having to reset your thermostat when the battery dies, you can ensure you take into account the thermostat low battery symptoms and replace them before they die. 3) Display goes blank during heating – The most likely cause is a furnace that is tripping on high limit or some other safety limit. When it’s finished, the thermostat will boot up and automatically begin heating or cooling your house again, and all of your settings will still be intact. Your thermostat is a small, but crucial part of your HVAC system. If the thermostat is not functioning properly, there are a number of ways you can try to troubleshoot it yourself. If your thermostat screen has no display and will not turn on when the power button is pushed, the thermostat could be wired incorrectly. Thermostat display is off or is non-responsive; Turning on the heat or AC does nothing; The heat or AC will come on, but either stays on nonstop or cuts out before the temperature setting is reached; In general, any time the AC/heat doesn’t deliver the desired temperature, it could mean your home has a broken thermostat. These methods differ slightly depending on whether you have an analog or digital unit. Thing is, that signal doesn’t mean your indoor unit is made aware of the problem. As I mentioned above in this article, There are several reasons why your Honeywell thermostat keeps turning off and on. Category: HVAC. During regular use the screen may turn off if it doesn’t sense motion. It’s a part of Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Internet Explorer, and other browsers. If your thermostat still has a blank display after resetting your breaker, you may have a serious problem. Please have your electrician make sure the thermostat is wired correctly with the same voltage that corresponds to your heating system. When it is on this means the system has determined that it’s too cold outside for your heat pump to heat the house without help, so it's getting help from the electric heaters. between W and C if the unit goes blank during a call for cooling and Y and C if the thermostat goes blank during a call for heating. Your unit is likely to last longer, and your wallet is sure to thank you. Why your thermostat goes blank then comes back on. Contact us online or call 972-263-2500 to schedule an appointment. Your indoor unit will probably continue running, and the thermostat will keep blinking until the problem is fixed. One of the computer emergencies that people worry about the most is when the computer turns on, yet only shows a blank screen with nothing else happening. But when something goes wrong with it, you won’t be able to control your air conditioner or your heater. Submitted: 9 years ago. Periodically, the thermostat display goes blank, AC shuts off. So, what does it mean when your thermostat goes blank? I cant even get the fan to turn on in my house. If you’ve tried rebooting the thermostat and changing the batteries, don’t forget to check the drain pan. Your Honeywell thermostat functions as a switch to turn the heat or air conditioning on or off. This could cause a blank thermostat screen. Contact your local HVAC technician for help. thermostat) by connecting it to the equipment terminals (not at the thermostat!) The thermostat is a crucial part of your home’s HVAC system: you can’t control your air conditioning and heating without it! Blank Display on Thermostat Problem - Screen Disappeared - The thermostat display is our interface with our HVAC equipment. Your thermostat is important. We’ve seen it all! If the power is not out in your entire home, then the next place you should turn your attention is either your fuse box or circuit breaker panel. With the help of Lux thermostat troubleshooting guidelines, you will be able to reset and repair your home appliance properly. Why does my thermostat trip every time it reaches the same temperature? However, most of the time, a thermostat blank … However, if your thermostat keeps blinking after the reset, you may have an issue like excessive defrosting or a switch in the outside unit that is stuck open. Thermostat doesn’t respond to changed settings: When you make temperature settings at your thermostat, it should almost immediately respond to those changes. Get in touch with the pros at Metro Express Service and we’ll diagnose and fix your problem quickly. Picture this: you walk up to your thermostat to adjust the temperature in your home, only to be greeted by a blank screen. My Thermostat Screen Has Gone Blank! If you make changes at the thermostat and get no response whatsoever from your furnace, air conditioner, or heat pump, it could mean the thermostat is bad. The display lets us know what the temperature is in the house. Heating or cooling room thermostat diagnosis: how to troubleshoot a heating or cooling room thermostat that is not working at all or is not working properly. The initial assumption was bad batteries in the thermostat but we learned through troubleshooting that the particular thermostat doesn’t need batteries, read on and find out how we got the thermostat back on and the air-conditioning working. So if you go to your digital thermostat one day to turn on the AC or change its programming only to discover that the display screen showing a total blank, you’ll have a problem on your hands. With a typical thermostat when you set the temperature to be 70 degrees at 08:00 normally the thermostat will begin to warm the house at 08:00. Show More. 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