In this instance, have your HVAC system checked by a technician. Maybe your whole HVAC system is broken, and you’re going to need to replace it all! Honeywell TH5320U1001 FocusPRO 5000 Non-Programmable Thermostat - Large Screen, HP/HC, 3H/2C, Auto C/O, Dual Powered Single Unit White More items to explore. Whichever model you have, you’ll find the battery compartment on the side of the thermostat. 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. In some homes, an air conditioner or furnace can trigger a safety switch and turn off the thermostat entirely if any damage has been detected. At ABC, we offer convenient service hours • Make sure furnace door is closed securely. Does your keypad display nothing on the screen? If you have a blank thermostat screen, there may be a simple solution to your problem. If you can’t determine the cause of your blank thermostat screen, contact Newcomb and Company. He did a great job and ensured that he used 5-star service throughout the process. What can you do if your Honeywell thermostat is showing a blank screen? Don’t panic. Once you replace the batteries, you may need to reset the unit and reprogram your settings. As the L5000 is an alarm control panel and keypad in one unit, it is also known as an all-in-one or self-contained wireless security system. Wait and see if the screen brightens again. Clean the battery contacts with a pencil eraser and gently pry out the spring contact so you get the best connection. Thermostats from Wiser Air, for example, require a C terminal, so you might need a special wire extender. Industrial & Scientific › Industrial Electrical Currently unavailable. We can diagnose and fix the issue. 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. If your furnace door isn’t fully and securely closed, the screen on your thermostat might appear blank. But if the battery drains down, you’ll see a blank thermostat screen (or possibly a blinking light) as it recharges. Honeywell’s FocusPRO® 5000 digital thermostat offers the perfect blend of features, performance, energy savings and value. Find Honeywell thermostats at Lowe's today. Why Is My Honeywell L5100 Showing a Blank Screen? Some thermostats require battery power, and if the battery dies, your screen will go blank. This category covers 3 thermostat models. Does your HVAC system have a power switch that can be turned on and off? Picture this: you walk up to your thermostat to adjust the temperature in your home, only to be greeted by a blank screen. Is there faulty wiring somewhere? Your Honeywell L5100 is showing a blank screen because it is not powered on. “Wait” appears on the screen • Compressor protection feature is engaged. for inconvenient problems. Honeywell TH5320U1001 FocusPRO 5000 Non-Programmable Thermostat - Large Screen, HP/HC, 3H/2C, Auto C/O, Dual Powered by Honeywell 1. Simply reset the circuit breaker and see if that solves the problem. We don't know when or if this item will be back in stock. You tap on it and press the buttons – still, nothing. Display screen Press the FAN button to select: Auto: Fan runs only when heating or cooling system is on. If this happens on several occasions, some component of your HVAC system may be broken. Dead Batteries. It will flash a low battery signal for one to two months before they run out completely, but if you’ve been away or haven’t noticed the signal this could be the reason. If your screen goes blank after several minutes of heating, it could be because the high-limit switch is tripping. 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