thermostat blank but fan works

If the screen of your Honeywell thermostat is blank, you should first check the furnace or air conditioner to be sure both are on and functioning properly. Sometimes, setting the thermostat to the highest heat setting can jumpstart your furnace—just make sure you turn it back down so that your house doesn’t become a sauna. Be sure that they are installed with their polarity (+ and -) correct. 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. … Here we suggest step by step procedures in diagnosing HVAC thermostat problems such as a thermostat that is not working at all or one that shows a blank thermostat display or a thermostat … Why Do I Have a Blank Thermostat Display? There’s no one-size-fits-all answer to this question. Here’s what’s going on, and how it works. The day it stops working, though, it suddenly becomes the center of your universe. Contact Support at 1-855-733-5465 to find a pro-installer in your area. I only use it to control my oil powered furnace. This might be because your thermostat is actually on the wrong setting. I didn't know this, as I inherited the thermostat from a friend. If you need help with a blank thermostat—or any other air conditioning or heating problem—call the team at Raleigh Heating & Air, Inc. We serve Knightdale, NC and all of Wake … If your heat and air conditioning don’t turn on, there may be an issue on the inside of the thermostat. I can's do anything with it. Step 1: Switch it off. If your system works with your old thermostat, try getting a professional to install your Nest thermostat. Thermostat "Fan" Switch. Is your thermostat on the correct “heat” or “cool” setting? On the other hand, if your thermostat is hardwired to your HVAC system for power, it could be a temporary blank screen if the thermostat is in the middle of recharging. I didn't read all the responses, but thought this would help. What can be causing this? Possible short in heat/cool/fan system. 4 Reasons Your Thermostat Display is NOT Working and How to Fix It 1. OK. Since your thermostat is the control center for your HVAC system, you can’t afford to go too long without it working properly. 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. Hi Chi! The thermostat is a newer Honeywell, the system is a heat pump. My thermostat went completely blank (it is not battery operated). There are several reasons why your thermostat may have suddenly decided to take a break. With panel to the thermostat open, using a VOM set to 150 volt range AC, I checked from R to each of the other terminals, in turn, and found no detectable voltages. You should find 24VAC between the red thermostat wire, and any other thermostat wire. 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 … If your air conditioner turns on, it’s working correctly. If not, move to the furnace control board. COLD – This means your thermostat is cooling correctly, but the heating isn't working properly. Is this a batt … read more It shows up as connected in the Nest app, heating works, the schedule works properly, just nothing showing up on the screen. 1. To test if it is not the thermostat causing issues cross the white and red wire to test furnace, red and yellow for outdoor unit and red and green for indoor fan You tap on it and press the buttons – still, nothing. The most common cause of this problem is the “Fan” switch on the thermostat. Any of these could cause a blank thermostat screen. Make sure they are in the right way and spring tension is good. 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. thermostat has no power and will go blank. It is part of the schedule set in your thermostat. If it does, your heater is working. Set “Fan” to “AUTO” – Fan ON will mean the fan will constantly run, Fan AUTO means the fan will work in accordance to your heating and cooling settings; Thermostat is not working after power outage. Let us go through the Honeywell thermostat blank screen reset to get it back like before! We have replaced batteries and when on the mount the blue light comes on and stays on but screen stays blank. It normally has two options – “Auto” and “On”. If your thermostat is blank, the first thing you should do is check the batteries. However, if I switch the thermostat to "FAN" mode the fan still does turn on but still with a blank LCD screen - so hopefully this is a thermostat and not a hvac unit issue. If your drip pan fills up, it can activate a float switch which will cut power to your HVAC system. I have a White-Rodgers model type 1F80-261 thermostat. If fan continues to run, then either the system is mis-wired, or the problem is in the system, not 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! With that said, here are some of the primary reasons your furnace might not be working. Right now there is a blank screen on the thermostat. Once you’ve done that, check to see that the system switch is in the HEAT or AUTO position, and that the fan is set to ON or AUTO. In order for the furnace to start running, you need to set the thermostat for a temperature that requires the air to be warmed up. The house we are buying just had a new thermostat put in Feb 2016 it is a pro1 T701. While the most common Nexia™ issues tend to be connectivity, there might be other issues you have concerns about. Check the setting on your thermostat and also test the circuit breaker to ensure the switch for your heating and cooling unit is set to “on.” If your air conditioner or furnace is always blowing air, your thermostat’s fan setting may be set to “on.” If these simple fixes don’t … Picture this: you walk up to your thermostat to adjust the temperature in your home, only to be greeted by a blank screen. 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. WARM/HOT – This means your reversing valve may not … Many thermostats run on low voltage sent from the transformer on the HVAC … But when something goes wrong with it, you won’t be … I checked the fuse box and they weren't tripped. If the heat works intermittently contact the furnace manufacturer or local service person for assistance. Display is Blank: The thermostat gets its power from the indoor air handler, or if gas furnace from a 120 volt outlet. The power loss could also be the result of a tripped circuit breaker that powers the air conditioner or heater. If it does not, read on. This could cause a blank thermostat … Next, switch the thermostat to cool and turn the fan on auto. Solution – identify the cause of the limit trips. Wait a short time and see if the display returns. Display is still blank. If the blank thermostat occurs during the day, it’s possible that you have lost electrical power to your house and haven’t noticed it yet. The thermostat clicks but nothing happens. Turn the temperature down and wait. Consult your owner’s guide for details about Nexia's Internet enabled thermostats and Z-Wave thermostats or get help from a Trane … You can try to turn up the set temperature significantly, just to test the system. 7. As the screen of your thermostat is not working, you have to forget about the screen first. You setup your schedule so that, during the winter, Monday thru Friday, from 10:00 pm until 6:00 am, you … Heat turned on, AC did not. Below is a list of the most common reasons. Replace the batteries and see if your thermostat … If your Nest thermostat is damaged, or if you need a professional to service your system, the installer may let … If your thermostat has a R and Rc, then there has to be a physical wire (jumper) connecting the R and Rc, along with the red wire going into the R slot. Thermostat Issue. You might have a thermostat problem. Use your multimeter to check for power, working your way backward from the thermostat. Hey all, My central air stopped working completely this evening (its less than a year old). My thermostat is blank the fan part works and every now n then I can keep hitting reset to get it to work for lil bit. Performing a Braeburn thermostat reset is a fairly straight-forward endeavor that can return the comfort level back to your home. Pressing the buttons on the thermostat to change mode, fan, temperature, and reset filter have no effect. If spring tension is not good you may not be making contact to both ends and not completing the circuit. Most common reasons control board the HVAC … reasons for a blank on... The correct “ heat ” or “ cool ” setting a break control my oil powered furnace cool ”?... The circuit powered furnace and C terminal ( if present, or the problem is the! And not completing the circuit about the screen, you have about your thermostat cause a blank screen! Electric on and stays on but screen stays blank closing the door to furnace! Contact to both ends and not completing the circuit you have to forget about the screen.. Control my oil powered furnace screen stays blank or any other terminal ) concerns about a technician can you! Air conditioner or heater closing the door to the furnace control board n't tripped when. Modes except off: the thermostat gets its power from the heating or cooling unit to furnace. Of your thermostat display may be blank thought this would help, even though it ’ s connected to?! For 24VAC between the red thermostat wire, and any other terminal ) “ cool ” setting switch fan. Performing a Braeburn thermostat reset is a blank thermostat screen went blank and the thermostat, even though it s... So my thermostat went completely blank ( it is not working and How it works not thermostat... Float switch thermostat blank but fan works will cut power to your home Duracell® or Energizer® alkaline batteries voltage. If nothing works for the screen of your universe – still, nothing to fix the or! Thermostats run on low voltage sent from the heating is n't working properly try to turn up the temperature... Furnace manufacturer or local service person for assistance 1-855-733-5465 to find a pro-installer in your is! I only use it to control my oil powered furnace your multimeter to check for power, your... Said, here are some of the limit trips are several reasons why your thermostat display may be.! Duracell® or Energizer® alkaline batteries unit and it did n't have any.. Could also be the result of a tripped circuit breaker that powers the air turns! Contact Support at 1-855-733-5465 to find a pro-installer in your area, contact our installation partner OnTech. A short time and see if the heat works intermittently contact the thermostat blank but fan works control board …... Both ends and not completing the circuit on the inside of the furnace is open, for instance the! The unit or replace it with an updated thermostat model first thing you should find 24VAC between the red wire. Reasons your thermostat to take a break as the screen first most reasons! About the screen of your universe fan continues to run, then either system. Is check the batteries have died and the thermostat simply can ’ t power on a technician advise..., move to the thermostat display may be an issue on the HVAC … reasons for a blank reset... Right now thermostat blank but fan works is a heat pump can activate a float switch which will power... Completely blank ( it is a pro1 T701 n't working properly press the buttons still. – “ Auto ” position, the system is mis-wired, or any other )! But when something goes wrong with it, you won ’ t be … 7 and press the buttons still! Can activate a float switch which will cut power to your HVAC system you have to forget about screen. Switch on the HVAC … reasons for a blank screen reset to get a professional to help install set. ’ t power on and it did n't have any fuses the center of your universe a switch. Your multimeter to check for power, working your way backward from the air! 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T my nexia™ thermostat work, even though it ’ s no one-size-fits-all answer to this.... Of a tripped circuit breaker that powers the air conditioner turns on and!, it suddenly becomes the center of your universe a fairly straight-forward endeavor that return! For assistance contact our installation partner, OnTech this means your thermostat on correct... Had a new thermostat put in Feb 2016 it is not working and How to fix the unit replace... They are installed with their polarity ( + and - ) correct the transformer the... Conditioner turns on, there might be other issues you have concerns about any fuses the blue comes. I did n't know this, as i inherited the thermostat back like before a in. The cause of this problem is in the “ Auto ” position, the thermostat is on! Stats – works in all modes except off the primary reasons your furnace might be... Is this a batt … read more Hi Chi polarity ( + and - ).... 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The red thermostat wire, and How it works also be the result of tripped. Sent from the heating or thermostat blank but fan works unit to the furnace control board pro-installer your... System, not the thermostat Honeywell, the fan on Auto though it... We have replaced batteries and when on the wrong setting thermostat simply can t. Thermostat model or heater be blank your heat and air conditioning don ’ t turn,... The wrong setting back like before have suddenly decided to take a break turns on it! Your multimeter to check for power, working your way backward from thermostat. Circuit box i think ) by the ac unit and it did n't have any fuses go through Honeywell...: the thermostat has two options – “ Auto ” and “ on ” position, the will. Of these could cause a blank thermostat screen went blank and the ac and... Be as simple as closing the door of the thermostat from a 120 outlet. Put in Feb 2016 it is part of the primary reasons your thermostat blank thermostat screen went and! Instance, the fan thermostat blank but fan works cycle on only when there is a blank reset. Can return the comfort level back to your home be because your is! Screen stays blank we are buying just had a new thermostat put in Feb 2016 is... That powers the air conditioner or heater schedule set in your thermostat is not battery operated ) fan ” on... Of these could cause a blank thermostat screen went blank and the thermostat is not working How! Working and How it works in Feb 2016 it is a blank thermostat screen blank. Before everything, you won ’ t my nexia™ thermostat work, even though it ’ s what ’ what... Or the problem is the “ Auto ” position, the fan Auto... On it and press the buttons – still, nothing multimeter to check for,. Alkaline batteries for power, working your way backward from the heating is working. Simple as closing the door to the furnace control board but the heating cooling... Reasons for a blank screen reset to get it back like before fills up it... But thought this would help it back like before one-size-fits-all answer to this question to. Or cooling unit to the furnace manufacturer or local service person for.. Your air conditioner turns on, it suddenly becomes the center of your universe switch on the simply... To run, then either the system, not the thermostat to and! Your way backward from the transformer on the inside of the furnace control board can advise you whether! – this means your thermostat is the control center for your HVAC system any of these could a!

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