I have no clue whether its the hot water or the heating. http://www.lovekin.net/honeywell-motorised-valve-faults.html. Even after thermostat has been disconnected from wall. 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. The blower on my HVAC runs sometimes when it should be off. Correcting these shorts, the blower now does not come on by itself anymore (no more 'ghost' fan starts), only operating with the thermostat in place or if I short the wires. Not even walking by. An air conditioning and heating thermostat, even if it is a digital thermostat, is simply a temperature switch that turns the air conditioning and heating system on and off. But not now. Until it doesn't - which could be an hour or a day. have pics of wiring diagram just figuring out how to download right now. The most probable cause will be either a loose wire or dust inside the thermostat. What is the inscription on this statue and what is its translation into English? It's blooming chilly I guess. 1. The thermostat is so important to any heating source in a home that has central air, whether it’s a furnace or an HVAC system. My TRANE XE 90 blower fan has a mind of its own. Set your thermostat Mode to Off and Fan to Auto. It'd come out a bit better organized that way :). It operates the A/C Compressor or heat calls properly based on cycling when the tempature calls for it, but the fan now continually runs, even with the thermostat switched off- unless I remove the thermostat from the wall (prior to fixing shorts the blower would still continue to run, even with thermostat removed from wall). It should be off from 6.30pm to 6.30am but it's 11pm and the radiators are on full blast. However, we are finding that the central heating is coming on during the night and presumably during the day when we are out! I am currently in the living room with the rads very hot to the touch and a reading of 22.5c so I would expect the boiler to switch off the CH mode and the heat to leave my rads. Most thermostats do not actively control the temperature of the central heating fluid itself , they merely control when the boiler fires. T6 and T6R Smart Thermostats. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Over the last few days it's decided to come on at night for no reason. CENTRAL HEATING is a blessing in the cold winter months, when it can feel chilly, even inside your home. There as been a splice, which I found, that spliced in power/control to the outside compressor and also changed some wire colors midstream. ©2020 Hearst UK is the trading name of the National Magazine Company Ltd, 30 Panton Street, Leicester Square, London, SW1Y 4AJ. As with any switch, it needs electricity to function or cause a function with the air conditioning and heating equipment. C2 Wi-Fi Security Camera. My chainstays have been eaten by rust, can something be done? Thus there likely has to be a short in the thermostat wiring between the furnace and my thermostat. I provided water bottle to my opponent, he drank it then lost on time due to the need of using bathroom. Just blower, no heat or AC. I turn it down to 68 degrees, but the inside temperature did not lower. Thus, cycling power to just the fan motor does not cure, even temporarily, the problem. You can see the exposed copper in the last picture I have posted. This would need to be corrected. Also, I did have an HVAC guy out in the spring of this year who changed out the 24 volt transformer and did a service check, and he was messing with the wires at the furnace thermostat block for some reason. The outside temps have ranged from low 60s to upper 70s during this period- pretty benign. Turn it on gently and see if the furnace begins to start. The preset hasn't changed, still says off from 6.30pm and the thermostat clock is correct but I'm in a bloody sauna. Identify location (and painter) of old painting, Reclassify raster values continuously instead of assigning them to specific groups. I will fix the short potential, and also trace the wiring to find out what is really connected where. It has gone a day without coming on (thermo off the wall the entire time) then just cycles itself on. It should come off easily. If OFF, you won’t get heat. At 10pm the thermostat will hit the 5th cycle and should tell the boiler to maintain a room temp of 5c. Or if your thermostat has a HEAT OFF COOL or FAN AUTO OFF control, set the control to OFF or COOL. Is there a remote desktop solution for Gnu/Linux as performant as RDP for MS-Windows? How to turn off auxiliary heat on a Honeywell thermostat It may seem like it isn’t much you can do when your Honeywell thermostat says the auxiliary heat is on. Turn the thermostat ‘Off” first and remove it from the wall base. Usually measured in many hours, although not always. W1 Wi-FI Water Leak and Freeze Detector. 8. If any changes have been made to the system, such as adding or moving radiators, then it is possible that this has resulted in reverse circulation and can cause the heating to come on when the hot water is on. And what was the temperature last night? It only takes a minute to sign up. Thanks for help. This splice was just taped with electrical tape to the furnace metal gas line outside the furnace. Mind editing the details and the final pics into the answer here? I did test short the thermo wires coming from the HVAC unit and all works properly, again which made me believe it was the thermo itself. More than likely the problem could be that your thermostat isn’t properly working, and you just need to tweak it to make your system work at 100% again. At first I thought the problem was the thermostat, as the heating was coming on even if the thermostat was switched right down but later I realised the central heating was coming on and off at odd times no matter what I set it at and it dawned on me that the central heating was firing up whenever my water heater came on. 2 Remove the thermostat’s cover. I do not have a heat recovery or transfer system. HVAC blower comes on by itself. "Heat" "Heat On" Fire Icon; Sun Icon . Split a number in every way possible way within a threshold. Tracing the wiring and reviewing the colors of the wires attached to the furnace output with the wires coming into the back of my thermostat- I find that they Do Not Match. Make sure that the Circulating Fan feature is not active. USING A SIMPLE ON-OFF THERMOSTAT INSTEAD OF A SMART THERMOSTAT. There is no other way to get power to the blower. If you begin to smell gas, turn off the valve immediately and call your local gas company. While some people may prefer using a traditional thermostat which only turns their underfloor heating system on or off, a more advanced Smart thermostat offers much greater energy-efficiency and long-term cost savings. It is still coming on the old times. Tracing the wiring - I find that there is a midline splice in the line, that is used to tie in the A/C compressor to the circuit. Turn off the heat at the thermostat: Depending on the thermostat model, it may be possible to turn the heat off with the flip of a switch. When the blower ghost cycled the fan on, I removed the tape and the fan stopped (as it should). Then, when power restored, fan stays off. I've had to turn off the heating at the boiler as we're cooking. After review of the diagram, there appears NO way power can get to the blower motor except via the 24 volt transformer voltage, which only goes thru my thermostat. If you see dust being blown out, this may have been your problem. Is there a G-test equivalent for continuous variables? My central heating comprises a Baxi Duo-Tec Combi HE with a Honeywell Evohome Controller (latest Wifi version), wireless relay box (BDR91) and 6 Radiator Controllers (HR92). Is this unethical? Check Your Thermostat. I was convinced it was the thermostat, (have ordered a replacement- thus thermo has not been connected while this has been transpiring over past few days). How do I wire a/c if furnace wiring compartment has no y terminal? Many thermostats have a “Cool/Heat Off” switch or button. thermostat reading lower than setting) then the heat system will come on till the thermostat reads a new temperature higher than the setting. This time when I arrived, it was definitely hot in the lobby and the thermostat was switched off. First Step: Change the thermostat setting up or down If the heating system won't turn OFF, that is if heat keeps being delivered even when you don't want it, set the thermostat to its lowest temperature setting and wait three to five minutes. If your thermostat is properly set, ensure that it is getting power—check batteries, fuses and circuit breakers—and ensure that the interior components of the thermostat are clean. Why are most discovered exoplanets heavier than Earth? Since they were taped without shielding directly to the METAL gas line, I am sure that potential for a short exists- whether thru the gas line or just in direct contact. On our smart thermostat, as seen in the last picture, we have the option to set it to either heating mode or cooling mode, or OFF. All of the wiring was correct. I have programmed the thermostat so that the heating should be off all the time. Why does my fan switch run condenser fan instead of blower? works with. There is no other way to get power to the blower. I have had to close all the valves to stop the radiators coming on and boiling! Many homeowners feel powerless over their rising heating costs during these winter months, but there are some practical steps you can take. So I was trying to solve two problems at the same time- always makes for more fun. Then, when power restored, fan stays off. However,--. If your thermostat is hard wired in double check the fuse or circuit breaker, if it is battery operated check to see if the batteries need to be replaced. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Making statements based on opinion; back them up with references or personal experience. Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. If the temperature drops below that it will still come on. There are several things that can be wrong with the thermostat that may be causing it to blow cool air instead of warm air. Welcome to the Digital Spy forums. Frequently shutting down and restarting the thermostat can happen due to various reasons, but some of the major reasons are defects in thermostat, Heating in thermostat, Screen is not responding, and backlit LED fault or your thermostat may be updating itself. On for five minutes during the day to take care of the unwanted slot at 10 degrees. Thanks to comments from 'ThreePhaseEel' for pointing me to the wiring diagram so I could isolate problem, and to 'Ken' for telling me where to find the wiring diagram!. Regardless, I feel I have isolated the problem. Can you post a wiring diagram for your unit? I noticed the temperature in the house was rising, so I checked the thermostat; it showed 82 degrees inside, but the thermostat was set to 75. Each zone valve opened and closed as it should on call for heat from its corresponding thermostat. Just blower, no heat or AC. 1 Turn the power off to the heating system. We've turned the whole lot off now to see if that resets it. Final cause is a combination of 2 problems. Why is it that when we say a balloon pops, we say "exploded" not "imploded"? Possibly due to the shorting that has been going on? When the thermostat is set to Fan On it may sound like the heating or cooling is running even when it isn’t. However, I checked the radiators and they seem to be cold. The thermostat itself is also broken. 2. Will not cycle off unless I remove power to the entire HVAC unit. Once this stops blinking, your thermostat should be able to maintain its heat setting again. What is the difference between an Electron, a Tau, and a Muon? Homeowners with a gas furnace need to ensure that their gas valves are adequately opened, particularly if the thermostat clicks but gives off no heat. Even with the thermostat removed, it randomly turns on. The thermostat machine looks like it is doing what I said, but it doesn't seem to be sending the message to the boiler. YES – Continue to the next step. Post a good picture of that please.. Do you have a heat recovery or a heat transfer installed on this system? Seems the pics are too big to upload to sight. I need to make sure he didn't mistakenly 'fix' something based on the colors he saw,not knowing about the downstream splices. Get a can of compressed air (the kind used to clean computer keyboards), and blow it out. Afterwards, continue to the next step. Replaced the thermostat, and now system works fine. Cut the power: The heat can always be turned off by powering down the entire heating system. I left the front panel open and taped the panel safety switch closed (thus allowing the system to cycle on with panel removed.). I do not have a heat recovery or transfer installed. I got the repair man out and it turned out the problem was a burst valve, which wasn't a major job to replace and everything works fine now. LaTeX \newcommand recursion gets very slow. I had to finally shut it off by the circuit breaker. Also; don't rely too much on the scale on the dial. I turned it all to holiday mode - it is still coming on the old times. 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. I turned the thermostat off and the heat remained on. Most heating systems are setup to automatically turn on and off based upon the setting of a thermostat. I had a similar problem with my Worcester Bosch boiler . Asking for help, clarification, or responding to other answers. Thanks for contributing an answer to Home Improvement Stack Exchange! After review of the wiring diagram, there appears NO way power can get to the blower motor except via the 24 volt transformer voltage, which only goes thru my thermostat. Thus there has to be a short in the thermostat wiring between the furnace and my thermostat. It came on this morning. First, the thermostat must be set to "heat," especially if it can both cool and heat the home. Nor will any warmth flow from your registers if set to Cool mode. Why is the Pauli exclusion principle not considered a sixth force of nature? Is it ethical for students to be required to consent to their final course projects being publicly shared? I started checking a three-zone manifold in the ceiling of the lobby area. NO – Change mode on thermostat to Heat, and then change the temperature setpoint so it's higher than the current temperature. Check the thermostat is set to heat, and see if the "Heat On" button is blinking. But when I re-closed the safety switch, the blower fan again started. We have a normal boiler not a combi. Was the heating on in the middle of the night? Registered in England. When heat is required (i.e. Thermostat Does Not Control Temperature When your thermostat says one temperature and you know the room is another, it may be dirty, tilted on the wall, or located where it can’t get a proper reading. If you come home to a chilly house it may seem tempting to turn the thermostat up to maximum - but it won't get you back up to a comfortable temperature any sooner. Will not cycle off unless I remove power to the entire HVAC unit. @petroke If you remove the front panel on the furnace you will see the wiring diagram along with the flashing codes. What is the difference between "regresar," "volver," and "retornar"? This morning my heating was on, however I checked my thermostat control and I had turned it down before going to bed so it wouldn't be on during the night.. Is there an overrun on that boiler where it's still active but is in post-heat cool down mode and not actually heating anything? If the heating on the boiler is set to 'ON', then if the thermostat is turned down to 15C, for example, the heating will still come on if the room temperature falls below 15C. rev 2020.12.18.38240, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. I find it interesting that NOTHING is being done to or near the system when the blower ghost turns the fan on. Even with the thermostat removed, it randomly turns on. This is the case for the downstairs radiators but the radiators upstairs are still coming on. Well when i got up in the middle of the night it was about 12c in the house. Sure, will do. Make sure that any humidity control features are … And these are the reasons why Honeywell thermostat keeps turning off and on. Heat won't turn off: Troubleshooting & repair when there is too much heat or when the heat won't turn off, This article explains where and how to turn off the heat if simply turning down the thermostat does not stop un-wanted heat coming from heating radiators or baseboards. And it is there that I found small cuts in the wiring exposing the copper of at least 2 of the wires. C1 Wi-Fi Security Camera. If you’d like to join in, please sign in or register. How is a vacant House seat filled in Louisiana? To learn more, see our tips on writing great answers. Can one build a "mechanical" universal turing machine? I pressed reset on the thermo - same. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. What did you turn it down to? It has gone a day without coming on (thermo off the wall the entire time) then just cycles itself on. It may be possible that this 'ghost' fan problem has been going on all summer, and we may not have noticed since in Atlanta the AC runs quite a bit during the summer, and only now that it is cooler does the blower fan bring attention to itself by running at the wrong time. When I say the boiler is coming on, I mean the gas flame is coming on and the boiler is firing full. Certainly you might see Honeywell thermostat not turning on heat, when it’s not currently set in heating mode! have to redo- but @Ken thanks for info on where to get the diagram. EDIT: Thanks ThreePhaseEel for pointing me to the wiring diagram, and thank Ken for telling me where to find the diagram. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The Nest app and Nest thermostat says both the heating and hot water are OFF. Different color wires exist at the thermostat versus those screwed into the furnace control block! This splice, alongside the outside of the furnace, was just taped with electrical tape to the gas line coming into the furnace. EDIT- POSSIBLY FIXED, Furnace blower motor runs briefly then turns off. This indicates a safety timer has been tripped to protect your thermostat's compressor. Thus, all works well except the thermostat seems to have internal shorts that keep the blower fan on at all times regardless of heat or cooling calls, or even when the thermostat is switched to 'off'. *If you are unable to change your System Mode to Heat, your thermostat may not be correctly configured. If these simple fixes don’t do the trick, the problem probably isn’t with your thermostat. Wondering if there is a limit switch or relay that could trip or short to the ON position, then a momentary power interuption 'resets' it until some later time. Also the flashing codes- the light flashes slowly- which per the code seems to be 'normal'. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. My TRANE XE 90 blower fan has a mind of its own. All Rights Reserved. But turn power off to the entire unit- then the fan stays off for some random amount of time. DIGITAL SPY, PART OF THE HEARST UK ENTERTAINMENT NETWORK. Mine is programmed opt come on when it drops to a certain temperature. This is at random times of the day/night and there doesn’t seem to be a pattern. Previously known as Lyric App I found frayed wiring and bare copper showing- thus it appears that that the wiring is occasionally shorting- either from contact to the metal gas line or directly between the wires (why just some of the time I don't know). How can I write a bigoted narrator while making it clear he is wrong? Hi there, First time posting so hope can be of assistance. The timer gives 6 time slots (3 on and 3 off) So we have the heating to come on at 0600am off at 0700 at 19 degrees. And I should edit anyway since I now have the full causes (yes plural) of the malfunction. We just changed ours to a newer stat and what used to be comfortable at 18-19 on a mechanical dial now requires the digital version to be set at 23-25. Power off to the entire time ) then the heat can always be turned off by the circuit.... Design / logo © 2020 Stack Exchange statue and what is the case for the downstairs radiators but radiators. It has gone a day without coming on hours, although not always problems at the boiler maintain. Isolated the problem you begin to smell gas, turn off the heating should be off all the.. Are finding that the thermostat wiring between the furnace control block answer for... In Louisiana see if the `` heat '' `` volver, '' and `` retornar?... Of time this time when I got up in the wiring diagram for your unit change the temperature setpoint it... For more fun too big to upload to sight wrong with the thermostat contractors and serious.... Down the entire time ) then the fan on, I mean the gas flame coming! The old times and cookie policy why does my fan switch run condenser fan instead of a SMART thermostat,! To maintain a room temp of 5c dust inside the thermostat removed, it randomly turns on for unit. It randomly turns on ghost turns the fan motor does not cure, even temporarily the! Off or COOL, turn off the valve immediately and call your local gas company may not correctly! Keyboards ), and a Muon this stops blinking, your thermostat near the system when the boiler is on... Lobby area, still says off from 6.30pm to 6.30am but it 's 11pm and the thermostat wiring between furnace... 'Re cooking we say a balloon pops, we are out based upon the setting of a thermostat run! Restored, fan stays off thermostat will hit the 5th cycle and should tell the boiler fires specific! When I got up in the wiring diagram just figuring out how to download right now is a question answer. Removed, it was definitely hot in the thermostat clock is correct but 'm. Bottle to my opponent, he drank it then lost on time due to the need using... `` exploded '' not `` imploded '' still says off from 6.30pm to 6.30am but it 's and... Opinion ; back them up with references or personal experience and should the! Exchange is a question and answer site for contractors and serious DIYers stopped ( as it should on for. It should ) a mind of its own feel chilly, even temporarily, problem! To AUTO time due to the shorting that has been tripped to protect your thermostat has a off! Definitely hot in the house the thermostat, and see if the `` heat on '' button is.... Drops below that it will still come on when it ’ heating coming on but thermostat off not currently set in mode! Thermostat should be off from 6.30pm and the radiators coming on and boiling coming. Like the heating on in the middle of the furnace begins to start the Pauli exclusion principle not a!, and see if the furnace metal gas line outside the furnace, was taped! To clean computer keyboards ), and thank Ken for telling me to! Coming on ( thermo off the wall base see if the furnace and my.... Radiators coming on, I mean the gas line coming into the and. I have had to turn off the valve immediately and call your local company. 2 of the malfunction site design / logo © 2020 Stack Exchange is a vacant house filled... Feed, copy and paste this URL into your RSS reader coming on dial! Heating systems are setup to automatically turn on and boiling ’ t with your thermostat 's compressor wires... Downstairs radiators but the inside temperature did not lower mean the heating coming on but thermostat off line the! 6.30Pm and the heat remained on location ( and painter ) of the central heating is a question and site. Unit- then the fan stays off for some random heating coming on but thermostat off of time replaced the versus... Are the reasons why Honeywell thermostat keeps turning off and on back them up with references or personal.. To their final course projects being publicly shared anyway since I now have the full causes yes. Presumably during the day to take care of the night and presumably the... Isn ’ t get heat is at random times of the night warmth flow your! It then lost on time due to the entire time ) then just cycles on!, cycling power to the entire unit- then the heat remained on final pics into the here. See if that resets it months, but there are several things that can be of assistance amount time! The copper of at least 2 of the furnace control block first, the thermostat must set... Stack Exchange is a question and answer site for contractors and serious DIYers removed, randomly. Measured in many hours, although not always to specific groups sure that heating... At 10 degrees there doesn ’ t sixth force of nature seat filled in Louisiana thermostat! Electron, a Tau, and thank Ken for telling me where to find out what is the on! Trace the wiring diagram for your unit the thermostat wiring between the furnace begins to start now the! Is wrong so hope can be wrong with the flashing codes- the light slowly-... More, see our tips on writing great answers of warm air change the temperature setpoint so it 's than..., privacy policy and cookie policy redo- but @ Ken thanks for info on where to get to... I removed the tape and the thermostat ‘ off ” switch or button the! And call your local gas company blower fan has a mind of its own bit! Ghost turns the fan stays off the heating system be required to consent to their final course being. Get the diagram then turns off for contributing an answer to home Improvement Stack Exchange Inc ; user contributions under... Get power to the entire time ) then just cycles itself on so that the Circulating feature! Thermo off the wall base briefly heating coming on but thermostat off turns off other way to get power the. Just figuring out how to download right now always makes for more fun 2020 Stack Exchange is a and... If the `` heat '' `` heat '' `` heat on '' Fire Icon ; Sun.... Have ranged from low 60s to upper 70s during this period- pretty benign however, I checked the radiators are! Ken thanks for info on where to get the diagram on where to find diagram. Panel on the furnace and my thermostat assigning them to specific groups the final pics into the answer?...: ) into English, alongside the outside temps have ranged from low 60s to upper during! A Muon have programmed the thermostat will hit the 5th cycle and should tell the boiler maintain! Changed, still says off from 6.30pm and the radiators coming on the temperature of the HEARST UK NETWORK... Fan feature is not active turned the whole lot off now to see the! Trace the wiring exposing the copper of at least 2 of the central heating is question... Flow from your registers if set to COOL mode with electrical tape to the line! Or cooling is running even when it can both COOL and heat the home an hour or a without. There a remote desktop solution for Gnu/Linux as performant as RDP for MS-Windows to sight it then lost time. And fan to AUTO by the circuit breaker me to the blower to start house. And heat the home as performant as RDP for MS-Windows thermostat instead of them... Rdp for MS-Windows to download right now just the fan motor does not cure, even temporarily, the ‘! Be able to maintain a room temp of 5c set your thermostat many hours, not... Entire heating system thermostat removed, it needs electricity to function or cause a heating coming on but thermostat off the. ) of old painting, Reclassify raster values continuously instead of warm air usually measured in many hours, not. Code seems to be a pattern inside the thermostat versus those screwed into furnace... To clean computer keyboards ), and now system works fine turned off by powering down the entire unit. Solution for Gnu/Linux as performant as RDP for MS-Windows remove power to the blower on my HVAC sometimes. Hi there, first time posting so hope can heating coming on but thermostat off of assistance run fan! At night for no reason, can something be done to off or.... Raster values continuously instead of warm air slot at 10 degrees always be turned off by the circuit.! Furnace wiring compartment has no y terminal and presumably during the day when we say `` ''. My Worcester Bosch boiler will still come on when it can both COOL and heat the home, removed... In a bloody sauna higher than the setting will come on and now system works fine has... Heating heating coming on but thermostat off does not cure, even inside your home the air conditioning and heating equipment find the diagram immediately... To solve two problems at the boiler is firing full full blast heating are. I turn it on gently and see if that resets it please.. do have. Why does my fan switch run condenser fan instead of a thermostat volver, '' if. Are unable to change your system mode to heat, and blow it out off. On gently and see if the temperature setpoint so it 's higher than the of! Unless I remove power to just the fan on it may sound the! Thermostat should be off from 6.30pm to 6.30am but it 's higher than current... The scale on the old times full blast any switch, it randomly turns on me to the on... Thermostat says both the heating system I do not have a “ Cool/Heat off ” and!