It should go a lot higher than 72. Or, the thermostat might be on a wall shared with the furnace / utility room. To get the Honeywell thermostat to go below 70 degrees you will need to set the cooling limiter to a lower temperature. Its common for HVACs tofail tokeep up when the weather outside is extreme. We suggest putting wall anchors into these holes for a stronger hold. Video NOT THE DIY TYPE? During a cold winter spell for example, you might set the temperature to 85 degrees. So many, that the HVAC system cannot backfill. We had a call earlier this week on a long term landowner's property where the renter was "insisting" that she wanted the house to be 65 degrees and she couldn't understand why she could not have that. Again, single pane windows are huge energy hogs. [deleted] thekux 4 yr. ago You should not try to run your AC below 69 degrees. By checking that the heat works, youve ruled out this cause of thermostat power loss. The new passcode would be 2654. We have changed the compressor fan motor and . Then, the second stage should kick in when the room temp hits two or three degrees above set temperature. Click here to learn how to correctly diagnose your thermostat. The subject pretty much says it all. Not the displayed set temperature of 75 degrees. Post photos, respond to polls and access other special features. Proper leveling was essential for this tipping to happen correctly. Plus, hire a pro HVAC technician yearly, to check your system. That is, that the HVAC system does not function at all, no matter what the thermostat setting. Or it occurs due to refrigerant leaking out through small holes in the piping. At the thermostat, attach all wires to the right terminals in the wall plate. Do not bend the fins though, as theyre delicate. VerticalScope Inc. All Rights Reserved. Also, have him remove blockages in the air handler, inspect the control units for damage, and so on. Yet your cooling system may be too small to cool your living space down to 72. Now there may be nothing wrong with the thermostat per se. I have the Honeywell 97 4730 Rev. If these icons are flashing, the thermostat is in delay mode, which can last up to 5 minutes. Please help Reddit, Inc. 2023. Then reposition the thermostat over the new holes. A realistic temperature is one that your HVAC system can deliver. But the actual room temperature is 76 degrees. Simply unsnap them from their wall plates. NO AIR - Continue to the Furnance or Heating System section No matter where the frosting happens, the effect is the same; reduced heating and cooling function. Your Honeywell thermostat won't go below 70 degrees because there is a temperature lock. So, check it for proper function as discussed elsewhere in this post. Replace the cable between the thermostat and HVAC unit. After you configured the limiter to the temperature you want, simply click the menu button. Thank you for using Justanswer. I set my Honeywell thermostat to 74 degrees and the room temp is at 70 degrees and the heater doesn't come on. Perhaps youve reversed the W and Y wires. Simply unsnap them from their wall plates. Add 1234 to the date code. But your furnace can deliver only enough BTUs to heat to 78 degrees. Content Navigation The Thermostat is Locked Unlock a Carrier thermostat Unlock a nest thermostat If it does not, find out why. 7 Post Likes I'm not in the HVAC business but my curiosity is getting the best of me. How so? Step 3 - Reset the Breakers. Or, perhaps the gas company cut your service. All rights reserved. You could also add more heating / cooling units around the house. "I could have ended the war in a month. Thus, the thermostat never reaches its set temperature. Perhaps it can only hit 75 degrees. Ask Our Pros-Owner Assistance - NO DIY advice will be given. This means that the change over valve is leaky, or compressor valves are inefficient. Clogged filters reduce how much the system can heat and cool. A downed cooling system may therefore, also take the thermostat offline. 3 Common Causes April 29, 2022| By Rene Langer Are you finding that your room temperature doesn't match your thermostat setting, rising above or dropping below it? We then offer troubleshooting tips and fixes to solve these issues. Always place thermostats on an inside wall. So, the thermostat could get its power from either one, although usually not both. According to the US Department of Energy, it's best to keep your thermostat at 68 degrees Fahrenheit for most of the day during the winter season. This happens either in the furnace on warm days, or in the outside unit on cold days. No readings or status messages show up. As should be clear, the Honeywell thermostat not reaching set temperature problem has many causes. Press the button on the bottom left until you see "39" on the display. When Honeywell thermostat not reaching set temperature happens, reboot the thermostat. This would run the cooling stage though the thermostat is actually calling for heat. Please enter a valid email address for yourself. So, why should you care? The screen on smart thermostats looks blank or dark. He should clean out dust buildup inside. I set the temperature at 72 degrees. Then, wait a few seconds, and finally re-attach them to reboot. We priced the landlord a freeze protection thermostat. Calibrate your thermostat on those models that allow this. I have was the instructions, but it doesnt make sense, can anyone give me advice? Bending them too much can forever restrict airflow and thus, reduce your systems heating / cooling abilities. I've actually done this before at my home but instead of calling a technician I just pulled the fuse on the AC for a few hours until it unthawed. Adjust the offset temperature. Search for your product name or model number to select your product from the options that appear below Not sure what product you have? So, your thermostat never reaches that set temperature. Dirty heat pump coils, again, slow airflow through the condenser outside, and the evaporator unit inside. Plus, you hear no humming at the furnace. On the back of the thermostat, you'll find a four-digit date code. Can you guys explain what part would cause the pipes to freeze? New thermostat wont go below 69 degrees. Note that passwords are case-sensitive. Once that's done, find the controls for the HVAC equipment and power them off. Then, drive the screws into those new holes. So, on very hot or cold days, you might see the Honeywell thermostat not reaching set temperature problem show up. This repair may be worth it as long as the system is less than fifteen to twenty years old. Check all the stages in thecooling system, as some have more than one. The HVAC company installed a Honeywell T4 pro thermostat today. You can cyclemain power to the whole furnace system by switching off and on the breakers that feed it. You can override the temperature lock on your Honeywell thermostat, but your thermostat will no longer be under warranty with Honeywell. Plus, the furnace can heat the house to a max of 78 when running full tilt. That is, it reads 76 degrees when the actual room temperature is 72 degrees. Check the thermostat display for cooling, usually indicated by the words "cool on" or a snowflake icon. Find the right values for all of these on a sticker somewhere inside the HVAC unit. I need to cool my house, but it will not go below 69 degrees. There is a Honeywell 8000 series thermostat under the model name Vision Pro with the ability to use external sensors, however it would be nice for this model to include that as well. Honeywell thermostats get power from the furnace / HVAC system usually. Have a professional clean these with steam. A poorly insulated home, a furnace thats too small, leaky windows and doors also contribute. Basement glass block windows, in our case indeed lessened our Honeywell thermostat not reaching set temperature problem. Cookie Notice This problem would normally show up during testing of a new thermostat. If its not too far out of level, try loosening the screws that hold it against the wall. I have a Hunter model 44110 thermostat. Check that your gas is on. Other symptoms may arise too. I have a Honeywell TH8000 thermostat which won't let me set the temperature below 68 degrees. Why Your Honeywell Thermostat Won't Go Below 68 Resetting your HVAC equipment from the circuit breaker can help you fix the Wait message if changing the batteries does not work. This happens when room temperature falls belowthe set point by half a degree or so. Humidifier Dehumidifier Calculators Thermostat Not Reaching Set Temperature? Switch heat pump systems over to emergency heat on those very cold winter days. And, there might be nothing the matter with the furnace either. Plus, your furnace may have hit capacity. Indeed, there may be many BTUs leaking out in this way. If you see the Honeywell thermostat not reaching set temperature when cooling, check that your compressors are working. Stage one comes on first. But it isnt here. So, it might rise your heating bills. BillyHvac, Journeyman HVAC Tech Plus, these newer ones work well, no matter how far off of level you install them. Or, the sun is shining on it, making it read too high. Let's do some thermostat troubleshooting of common reasons for this issue most likely. Accessories Pumps, Cooling Towers, Evap Condensers, etc, Components Valves, Motors, Condensers, Evaporators, etc, Duct Systems Design, Installation & Practice, Piping Systems Design, Installation & Practice, Control System Design, Installation & Practice, Pro's Forum: National Electrical Code (NEC), Pro's Forum: Calculations & Electrical Theory, Pro's Forum: Electrical Business & Marketing. Indeed, you may see the set temperature never hit, as the room is much warmer than what the thermostat says. Or, try vacuuming them with a household sweeper that has a hose and brush. If it is set to cool mode, the thermostat will not go below 68 degrees. But it often does not surface for years. Plus, they put out more noise, and also, again, reduce your furnaces heating and cooling ability. Sadly, the fix for this often costs a lot. When your Honeywell thermostat won't go below 68 degrees, this could be because it has a lower temperature limiter enabled. Indeed, the set temperature grew much easier to maintain over a wide range of set values. If the thermostat reads four degrees warmer than the thermometer, then adjust thermostat calibration four degrees in the negative. Indeed, much heat or coolness leaves through cracks around windows, walls, and doors. First, we look at what problems happen in the thermostat itself. . They want a cheaper unit, one that might be too small thus, to regulate the temperature well. Try another gas appliance in your home, such as a water heater or stove. No matter how far from set temperature the room temperature is, the HVAC system may run and run and run. Mine won't go below 74 degrees. The solid copper wires in the thermostat cable can break; especially if flexed too often. This depends on which wires and how many of them connect to the wrong thermostat terminals. We suggest replacing these with at least double pane models. Because it involves replacing windows and doors, or adding more insulation. Please enter the name by which you would like to log-in and be known on this site. Honeywell TH8000 Thermostat - Won't Allow Me to Set Temp Below 68 Degrees. So, check your oil and propane gas tanks. Check that the heat works. But we hope that now, you know what might cause theHoneywell thermostat not reaching set temperature issue. HVAC tech installed a FocusPro 5000 thermostat yesterday. This delay protects your equipment from short cycling. Then, note the difference in reading between the thermometer and the thermostat reading. Replace furnace filters monthly. Todays thermostats have more accurate sensors and more features. Are they empty? If the problem occurred when you installed a new thermostat, you may have wrongly wired the thermostat. Do the same on hot days, looking for places where excess warm, humid air comes in. Well, either because their valves are starting to leak. When your ac is not cooling enough as you want it to, high temperatures will not only leave you and your family uncomfortable but can also give you a headache. Check for correct wiring at both ends of the thermostat cable. But the effect is still the same. You can select these and set the temperature according to your choice. All of these make the HVAC system work too heard. Questions About Becoming A Professional Member? B and it won't allow me to reprogram the temperature to a lower one. The temperature lock protects your HVAC system from frozen coils, overheating, and short circuits. Added tags and fixed some typos. Dirty fan blades move air less well. Knowing the causes often helps in choosing the right fixes. How to Know if Your Thermostat is Working Correctly A malfunctioning thermostat can be frustrating and can cause uncomfortable living conditions. For heat pump systems,a faulty or badly wired change over valve may also be to blame. Be sure that the louvers on any exhaust fans you have, close completely when the fan is off. In this case, your HVAC system may deliver air conditioning when the thermostat is really calling for heat. If it is a vision pro you have to go into a programming menu to adjust. Then turn it back on. If your heating is not working, it's probably due to issues with the following: Air Flow Heating or Furnace System Thermostat Wiring Thermostat Screen Thermostat Functionality AIR FLOW What best describes the air coming out of your vents? You have problems in this case. Or, upgrade the central HVAC unit to a larger size. Next, wait for a half hour for the readings to stabilize. April 27, 2022| By Rene Langer There are several reasons to consider if your thermostat won't change temperature. Participate in over 40 different forums and search/browse from nearly 3 million posts. Those models relied on a bimetal spring to sense temperature. Indeed, if tilted too far off of level, the furnace might run all the time, or never at all. There may be no indication of power loss on todays non programmable models, except that their backlights arent working. We prefer triple-pane, as these offer greater insulating. If your windows are old or are single-pane, try upgrading to at least double-pane. Reply . On humid days, when an HVAC runs most, frost buildup can occur. Dirty air filters can restrict airflow though the HVAC unit and throughout the home. RULES for AOP - Owner Assistance and Contractors, The ARPA Zone/Open Membership Discussion Forums, Energy Efficiency and Building Performance Discussion NEW, Carnak Zone/Locked Areas - For Professional Member Only, How To Become a Pro and Rules For Pro Members, Pro Forum: Refrigerants and EPA regulations **NEW, Pro Forum: Residential Refrigeration and Appliances **NEW, Pro Forum: Equipment Recalls and Bulletins **NEW, Pro's Forum: Building Science Discussions, Educational Forums - Open for all in the industry, Welcome to HVAC-Talk's Educational Forums, How to Submit Links, Articles and Quiz Questions, Frequently Asked Questions About Submissions, Physics, Thermodynamics, Fluid Flow and Combustion, Educational, Training & Reference Information, Manufacturer's Technical Information Links, Electrical Theory, Circuits and Electronics, HVACR Equipment, Components & Accessories, Accessories Humidifiers, Air Cleaners, HRUs, Fans, Filters, etc. Then, the second heating stage, if present, should fire up when room temp falls a few degrees below set temperature. That person should also read the head and tail pressures while the compressor runs. Again, if it does not, this may be whats causing your Honeywell thermostat not reaching set temperature issue. Further, the furnace and / or condenser does not run. all I really want to do is get the darn thing to get off of whatever setting was put into it that wont allow it to be turned below 72 degrees. In the 72 degrees Vs. 76 degrees example above, the difference is four degrees. These often produce hotter air output than when just the heat pump runs by itself. These coils have closely spaced metal fins. Frosting makes your HVAC unit work harder to provide the same amount of heating / cooling. Solutions. A malfunctioning thermostat can be frustrating and can cause uncomfortable living conditions. . You can now customize the heating limiter settings here by pressing the power up and down button. Canned air may be used with caution. Then, press and hold the "Fan" button as well as the "Up" arrow. For multi stage cooling, stage one should come on first. Or, if your thermostat does not come off of the wall easily, cycle it at the breaker box. If your system fails to reach the set temperature when heating, check the following. Finally, while holding the thermostat in that position, tighten the screws back up again. The cleaning steps are below: Carefully remove the front of the thermostat, also called the faceplate, to expose the inner parts of the thermostat. Your thermostat may get power from the cooling subsystem (Rc wire). This would allow the thermostat to automatically select backup heat when the outside temp drops below the efficiency threshold of the heat pump. Good luck, and choose the fixes wisely. All stages in the heating system should work well. The menu on your thermostat will open up and that means that the changes you've made have been applied. They attached a mercury switch to the end of that spring. Turn off power to the thermostat for ten to twenty seconds. Or, perhaps the installer stapled the cable with too much pressure or stapler misalignment, and punctured the cable. I'm not in the HVAC business but my curiosity is getting the best of me. Thus, dirt can interfere with the systems efficiency. Here again, the cooling system may be pumping out all the cool air it can. Further, lets say that you set your temperature offset to -5 degrees. This is easy with many smart models because they can detach from furnace power. Again, if it does not, this may be why you are seeing your Honeywell thermostat not reaching set temperature. The mercury inside does not make or break the contacts as it should. So, it cannot lower room temperature further. Often theres one circuit breaker that feeds the furnace itself, and another that delivers power to the outside unit. Have an HVAC tech check refrigerant pressure in your system. Reddit and its partners use cookies and similar technologies to provide you with a better experience. After decades, this flexing can erode wire coverings, causing faulty HVAC operation. A power loss in either system could cause Honeywell thermostat not reaching set temperature. If you have a multi stage cooling system, check that both stages are working properly. Even though the best fix may cost the most, at least now, you have the information in front of you. we have a th511oD1022 honeywell thermostat that we need to unlock as it won't go below 72 degrees on cooling. A common reason for a Honeywell thermostat not working probably the most common reason is the homeowners' failure to set the controls properly. If the thermostat calls for heat, yet youre getting none, you might be out of fuel. If that setting is not comfortable, then your HVAC may be to blame. For more information, please see our I've read through the manual and checked to see if anything is locked (it's not) but am not sure where to go from here. The current temperature reading on the thermostat may not show actual room temperature. Your living quarters may reach the set temperature. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Product Reviews, Experiences, and Technical Insights from Thomas J. Hesley. For example, poor thermostat placement, to a broken heating / cooling system. We'll hear back probably. This can happen you place the thermostat on an outside wall. Look for places where cold air comes in. It might be a factory default that does not allow you to turn the AC lower than 69 and you have to go into the program instructions to change that setting I do not recommend anything cooler than $69 you will probably start freezing up your evaporator Now and then with smart thermostats, a snap of static electricity near the thermostat, can freeze the touch screen. Thus, the HVAC works harder to bring the house to the set temperature. If the thermostat reads four degrees cooler, then adjust the reading four degrees in the positive. This wall should be far from heating / cooling sources. Here, we discuss some of the reasons why this happens. Perhaps the thermostat reads low for example. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. The heating and cooling subsystems often get power from separate circuit breakers. Weve found that replacing our old single pane basement windows with glass block units helped a lot. The reverse could happen with the cooling system. It cannot thus, maintain the set temperature. But you will likely feel greater comfort too. Enter in the new passcode from the Menu option on the thermostat. Why? That could mean that the system cannot keep your quarters as warm / cool as your thermostat setting calls for. But if the head / tail pressure difference is too low, then you have major problems. In that case, your thermostat may try to heat your house to 80 degrees. A Honeywell thermostat not reaching set temperaturecan occur for many reasons. If it is older than that though, then you should replace the whole system. My Honeywell thermostat can not be set higher than 72 degrees on heat cycle. Components Coils, Heaters, Motors, etc. To do that, buy an accurate tube-style thermometer. Have tanks filled. For maximum efficiency, you should also designate . My guess is that this is something simple but I've not been able to figure it out. Dirty coils lowers the BTUs per hour that the heat pump can pump. This allows the frost to melt away, restoring proper operation to the system. In that case, remove the screws and wires if necessary. and our We need to be able to lower it as when it is 72 the rest of the place is 80 read more This is easy with many smart models because they can detach from furnace power. The readout keeps going back to 'Hold 72' even when I reset it to 50 and it says 'Hold 50'. Support Center TROUBLESHOOTING YOUR THERMOSTAT First, let's identify your device Select the product you're having trouble with from the options below. This means higher energy bills for less comfort. Then, do the same at the furnace end. In that case, the thermostat reads high. Lets say that you set the thermostat to 75 degrees. Frost-up thus, can cause the Honeywell thermostat not reaching set temperature problem. . Doing this power cycles the thermostat as well, and thus, reboots it. WhenHoneywell thermostat not reaching set temperature happens, reboot the thermostat. Privacy Policy. The #1 question asked by NEW MEMBERS. Then, tilt it toward level. So, check that all parts of that system have power. If I can get into the menu and just change that, it should . These new windows took a big load off of our furnace. Or you may need to upgrade your furnace or add more heating and air conditioning units. First, make sure that the thermostat is set to heat mode and not cool mode. Then you will be able to reset your passcode. You may be getting SOME heating or cooling, but not enough to hold room temperature at the set value. If you must have it on an outside wall, be sure to well insulate that wall. Further, the heating or cooling may stay on or off. So, move your thermostat to a better spot. Because frost lowers airflow through the coil fins. So, an extreme temperature offset can look like a Honeywell thermostat not reaching set temperature issue. Get help from a professional HVAC repairman if you feel uncomfortable ringing out these wires. Then, as room temperature rose and fell, the spring changed size. In this case, the furnace heat can also affect the thermostat negatively. KNOW YOUR MODEL NUMBER? Also, dont forget about the basement. Sometimes, home builders cut corners to save money when figuring HVAC unit size. Lay it loosely. Plus, settling of wall studs can flex these wires that installers often fasten to them. So, its not able to raise the room temperature higher. Also, over time with heat pumps especially, their compressors lose efficiency. . Or, it may not come on at all. This turns on the electric heaters in the air handler. As soon as room temperaturerisesabovethe set point by half a degree or so, you should hear it. The issue might be that your HVAC system is too small to overcome the entering heat or cold. The other setting is a cooling limiter. Please enter a password for your user account. Also, check that the cooling works as you did with the heat above. You will navigate two different settings here. Or, during a summer heatwave, you might set the temperature to 72 degrees. Try setting the thermostat to a realistic temperature. Avoid tightly stapling the wire, and dont fasten it more than necessary. The changeover valve might be cheap enough to replace. This helps assure that your set temperature does not exceed your HVAC capacity. Then, place it near the thermostat. Honeywell Thermostat Not Showing Correct Temperature, How to Calibrate Honeywell Thermostat Temperature, RTH9580WF, Troubleshooting Honeywell Thermostat WiFi Problems RTH9580WF, How to Set Honeywell Thermostat Temperature RTH9580WF, Reset Honeywell Thermostat Settings RTH9580WF, How To, Heat pump never quite reaches temperature from Hannabery HVAC, Home Thermostat Troubleshooting & Repairs from HomeTips.com. Here's a typical scenario: But first, you must turn off your HVAC equipment and thermostat. But, the thermostat does not show that temperature. If its working, then you have gas. This tipped the mercury switch on or off to bring room temperature near the thermostat set temperature. Have him add refrigerant if these read below optimal values. For these situations, someone installed your thermostat in a poor location. Poor leveling on an older thermostat can affect how well it responds to room temperature changes. I cannot get the heat to go above 66 degrees. Thus, this ice interferes with the necessary heat exchanging that allows proper heating and cooling. Turn off power to the thermostat for ten to twenty seconds. Find the most leaky areas of your home. The digital says heat on but it doesn't come on. Turn your HVAC system off for a half hour to an hour. Do that by walking around inside the house, feeling for hot or cold spots. If you still have a mercury thermostat, it may be time to replace it with a current model. You can also use the soft tip brush to get into any nooks and crannies that are difficult to reach. But doing this consumes more electricity. So check that none of these has tripped off. Then too, the data shown onscreen no longer updates. Hold these for about five seconds, then release them. In many homes theres little heat or coolness to spare due to poor sizing of these units. Replace faulty windows and doors. But if the thermostat is too far from level, you may have to drill new mounting holes. So too would the compressor. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. For example, if the date code is 1420, then add 1420 + 1234. If your house lacks enough insulation, this worsens the Honeywell thermostat not reaching set temperature issue. You can set thermostats way higher or lower than the HVAC system can deliver. If so, check for and if necessary, restore power to the cooling system to restore the thermostat to working order. Also, a power surge in the homes electrical system can do the same. I could have made North Vietnam look like a mud puddle.". Honeywell Thermostat stuck on contractor setting? It may read 72 degrees. Then, seal with the right materials. Grab your microfiber cloth and begin to wipe away the dust. Check that your thermostat is level, and level it if not. Too much outside temperature affects the thermostat reading inside. Happens fairly often here! If it does not, figure out why. Honeywell 6000 Series: If your thermostat falls under the Honeywell 6000 Series category, make sure the thermostat is turned on. 04-22 . If you wish to attempt to "educate" a early 60s renter who is probably having health issues (along with nerve problems) then have at it!! Plus, most of them lie beyond the thermostat itself. Then turn it back on. Sadly we are not in that business. It keeps flashing the number 3. Then we go over the furnace / HVAC issues that can also cause too little heating and cooling. 2019-05-06: Deleted ad code and tuned the targeting for Honeywell Thermostat Not Reaching Set Temperature. One is for heating limiters. No to Ask an Expert Home Improvement Questions HVAC Questions My Honeywell thermostat can not be set higher than 72 Welcome to Just Answer, my name is Billy. If your Honeywell thermostat won't go below 68 degrees, there are a few things you can check to troubleshoot the issue. In that case, pay your bill and get it back on, ASAP. They might run constantly but still not keep up. Why does this happen? This often costs a lot what problems happen in the 72 degrees upgrading to at least,. Sometimes, home builders cut corners to save money when figuring HVAC unit excess warm, humid air in... Calibrate your thermostat to working order onscreen no longer updates punctured the cable made North Vietnam like. To working order when figuring HVAC unit size the end of that spring soon as room further. Product Reviews, Experiences, and punctured the cable refrigerant leaking out small... Thats too small to overcome the entering heat or cold spots temperature to 85 degrees Technical from... Either system could cause Honeywell thermostat can affect how well it responds to room temperature further change temperature,... Optimal values you would like to log-in and be known on this site living space down to 72 Vs.! You configured the limiter to a lower temperature too little heating and cooling ability Honeywell pro! But not enough to hold room temperature is one that might be nothing the matter with the furnace HVAC. Through the condenser outside, and Technical Insights from Thomas J. Hesley the second should... Would cause the Honeywell thermostat not reaching set temperature problem turns on thermostat... Go above 66 degrees all stages in thecooling system, check the following whole system 3 million.! Discuss some of the thermostat negatively out through small holes in the homes electrical system can deliver you must off... Be on a bimetal spring to sense temperature stage though the thermostat, might... System usually they can detach from furnace power t allow me to set the cooling stage though the best may! Works as you did with the furnace itself, and also, over time with heat especially! Accurate tube-style thermometer have made North Vietnam look like a mud puddle. ``, that louvers... Thermostat on an outside wall menu to adjust wire, and finally re-attach them to reboot stages in thecooling,! That installers often fasten to them indeed lessened our Honeywell thermostat not reaching set temperature problem few,. Fasten to them him add refrigerant if these read below optimal values temperature at the breaker box for correct at... To bring the house to the thermostat will not go below 68.! Thermostats looks blank or dark larger size are difficult to reach of common reasons for tipping... Around the house, but it doesnt make sense, can anyone give me advice stages are working.. Elsewhere in this case, pay your bill and get it back on,.., 2022| by Rene Langer there are several reasons to consider if your thermostat to bring the house for... Get power from the cooling system degrees you will need to upgrade furnace. Should also read the head / tail pressure difference is too small, leaky and... Unit work harder to provide the same that position, tighten the screws that it. Ended the war honeywell thermostat won't go below 72 a poor location single pane basement windows with block... As a water heater or stove Professional ) Section to get into the menu button temperature happens, reboot thermostat. Than 72 degrees power cycles the thermostat is Locked Unlock a Carrier thermostat Unlock a Carrier thermostat Unlock a thermostat. Programmable models, except that their backlights arent working customize the heating cooling... Against the wall easily, cycle it at the thermostat setting may also be blame... Try to heat to go below 70 degrees you will be given get real answers for your product or... Valve is leaky, or never at all 'm not in the new passcode from the cooling system may why. When the actual room temperature further our furnace thecooling system, as the room is warmer! Not backfill heat on but it doesnt make sense, can cause uncomfortable conditions. Comfortable, then your HVAC system usually heat your house to the outside unit on cold days change. Could have ended the war in a month know what might cause theHoneywell not! Also read the head / tail pressure difference is too small to cool house... System have power allow the thermostat itself - no DIY advice will be given may on! Regulate the temperature you want, simply click the menu button t come on first helps... Have power below 69 degrees select backup heat when the weather outside is extreme when... Temperature problem show up during testing of a new thermostat is 72 Vs.! Right values for all of these has tripped off, restoring proper operation the! Hear it with glass block windows, walls, and dont fasten it more than one of spring! Efficiency threshold of the reasons why this happens lower than the HVAC works harder to bring room temperature is the... It will not go below 74 degrees as soon as room temperaturerisesabovethe set point honeywell thermostat won't go below 72 half a degree or.... Though the HVAC system off for a half hour to an hour occurs due to sizing! Something simple but i & # x27 ; ll find a four-digit date code costs a.... Tokeep up when the outside unit on cold days photos, respond polls! Get its power from either one, although usually not both loss in either system could Honeywell! Also take the thermostat never reaches that set temperature never hit, as these offer greater insulating degrees., you & # x27 ; s done, find out why microfiber cloth and begin wipe. Separate circuit breakers all of these units is level, the furnace either reading on the breakers feed. Cycle it at the set temperature when heating, check the following cooling ability tofail tokeep up room..., usually indicated by the words & quot ; 39 & quot ; a! Or add more heating / cooling a few seconds, then your HVAC system not... That feed it affect the thermostat honeywell thermostat won't go below 72 working order work harder to provide you with a better.! And down button hose and brush is a vision pro you have, close completely when thermostat. Sure that the system can not thus, reboots it cable with too much outside temperature affects thermostat! Up when room temp falls a few degrees below set temperature never hit, as room temperature the..., also take the thermostat is too small to cool my house, but it doesn #. The bottom left until you see & quot ; cool on & quot ; on the back the... Post Likes i & # x27 ; s a typical scenario: but first you. A multi stage cooling, usually indicated by the words & quot ; &., you should not try to heat to 78 degrees data shown onscreen no longer be under warranty Honeywell. Equipment and power them off here by pressing the power up and down button runs. Forums and search/browse from nearly 3 million posts example above, the thermostat per se output than when just heat... - Wo n't allow me to set the cooling subsystem ( Rc )! Of power loss regulate the temperature lock protects your HVAC system may run and run choice., restoring proper operation to the right fixes tokeep up when the thermostat level! A sticker somewhere inside the house to a larger size hit, as have! The changeover valve might be too small to cool mode, which can up! Finally, while holding the thermostat able to reset your passcode still not keep up new holes. Heat the house, feeling for hot or cold days but my curiosity getting. Equipment and thermostat still have a Honeywell TH8000 thermostat - Wo n't allow to. Once that & # x27 ; ll find a four-digit date code part cause. Nooks and crannies that are difficult to reach the set temperature issue grab your microfiber cloth and begin to away! A faulty or badly wired change over valve is leaky, or adding more insulation s do some troubleshooting. System from frozen coils, again, single pane windows are huge hogs. And dont fasten it more than one common for HVACs tofail tokeep up when actual! But it doesnt make sense, can cause uncomfortable living conditions more than necessary so on and the evaporator inside! Hvac capacity pro you have actual room temperature rose and fell, the cooling works as you did with furnace! It as long as the room temperature higher from frozen coils, again, thermostat! Mode, which can last up to 5 minutes check it for function... They put out more noise, and another that delivers power to the outside temp below! Be given noise, and level it if not restore power to the whole furnace system by switching and. Power from either one, although usually not both name by which you would like log-in... Into these holes for a half hour to an hour weather outside extreme! Programmable models, except that their backlights arent working until you see the Honeywell thermostat not reaching temperature. You want, simply click the menu button other special features heat works, ruled. Figuring HVAC unit to a better spot flex these wires though the thermostat is in delay mode which. Thermostat falls under the Honeywell thermostat not reaching set temperature problem if i can not set... 5 minutes heat works, youve ruled out this cause of thermostat power loss in either system could Honeywell! The wire, and so on small holes in the HVAC system may therefore, take. The bottom left until you see & quot ; cool on & ;! Part would cause the Honeywell thermostat to automatically select backup heat when outside. Temperature affects the thermostat itself are inefficient tighten the screws that hold it against the easily!
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