heating coming on but thermostat off

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. And it is there that I found small cuts in the wiring exposing the copper of at least 2 of the wires. There as been a splice, which I found, that spliced in power/control to the outside compressor and also changed some wire colors midstream. I need to make sure he didn't mistakenly 'fix' something based on the colors he saw,not knowing about the downstream splices. If these simple fixes don’t do the trick, the problem probably isn’t with your thermostat. Why is it that when we say a balloon pops, we say "exploded" not "imploded"? CENTRAL HEATING is a blessing in the cold winter months, when it can feel chilly, even inside your home. So I was trying to solve two problems at the same time- always makes for more fun. DIGITAL SPY, PART OF THE HEARST UK ENTERTAINMENT NETWORK. If you begin to smell gas, turn off the valve immediately and call your local gas company. Check Your Thermostat. Final cause is a combination of 2 problems. have to redo- but @Ken thanks for info on where to get the diagram. The most probable cause will be either a loose wire or dust inside the thermostat. Get a can of compressed air (the kind used to clean computer keyboards), and blow it out. However,--. Making statements based on opinion; back them up with references or personal experience. Not even walking by. You can see the exposed copper in the last picture I have posted. Welcome to the Digital Spy forums. It's blooming chilly I guess. It should come off easily. 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 have programmed the thermostat so that the heating should be off all the time. Check the thermostat is set to heat, and see if the "Heat On" button is blinking. This time when I arrived, it was definitely hot in the lobby and the thermostat was switched off. I had a similar problem with my Worcester Bosch boiler . How can I write a bigoted narrator while making it clear he is wrong? Regardless, I feel I have isolated the problem. 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. Will not cycle off unless I remove power to the entire HVAC unit. How do I wire a/c if furnace wiring compartment has no y terminal? 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. Thus there has to be a short in the thermostat wiring between the furnace and my thermostat. Make sure that the Circulating Fan feature is not active. All Rights Reserved. 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. 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). By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Replaced the thermostat, and now system works fine. Can one build a "mechanical" universal turing machine? Seems the pics are too big to upload to sight. Possibly due to the shorting that has been going on? 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. I provided water bottle to my opponent, he drank it then lost on time due to the need of using bathroom. We have a normal boiler not a combi. Many homeowners feel powerless over their rising heating costs during these winter months, but there are some practical steps you can take. 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. It has gone a day without coming on (thermo off the wall the entire time) then just cycles itself on. 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). I will fix the short potential, and also trace the wiring to find out what is really connected where. 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. 8. Make sure that any humidity control features are … Hi there, First time posting so hope can be of assistance. Afterwards, continue to the next step. Turn it on gently and see if the furnace begins to start. What did you turn it down to? Cut the power: The heat can always be turned off by powering down the entire heating system. The Nest app and Nest thermostat says both the heating and hot water are OFF. YES – Continue to the next step. thermostat reading lower than setting) then the heat system will come on till the thermostat reads a new temperature higher than the setting. 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. 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. What is the inscription on this statue and what is its translation into English? I had to finally shut it off by the circuit breaker. Set your thermostat Mode to Off and Fan to Auto. T6 and T6R Smart Thermostats. Until it doesn't - which could be an hour or a day. If the temperature drops below that it will still come on. 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'. Each zone valve opened and closed as it should on call for heat from its corresponding thermostat. Thus there likely has to be a short in the thermostat wiring between the furnace and my thermostat. When heat is required (i.e. 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. First, the thermostat must be set to "heat," especially if it can both cool and heat the home. When the thermostat is set to Fan On it may sound like the heating or cooling is running even when it isn’t. Thanks for help. Why does my fan switch run condenser fan instead of blower? C1 Wi-Fi Security Camera. It is still coming on the old times. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. W1 Wi-FI Water Leak and Freeze Detector. 1. 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. If you see dust being blown out, this may have been your problem. Also the flashing codes- the light flashes slowly- which per the code seems to be 'normal'. C2 Wi-Fi Security Camera. However, we are finding that the central heating is coming on during the night and presumably during the day when we are out! I've had to turn off the heating at the boiler as we're cooking. Then, when power restored, fan stays off. Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. 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. 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. Well when i got up in the middle of the night it was about 12c in the house. But turn power off to the entire unit- then the fan stays off for some random amount of time. Many thermostats have a “Cool/Heat Off” switch or button. NO – Change mode on thermostat to Heat, and then change the temperature setpoint so it's higher than the current temperature. Will not cycle off unless I remove power to the entire HVAC unit. 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. 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. I turned the thermostat off and the heat remained on. Identify location (and painter) of old painting, Reclassify raster values continuously instead of assigning them to specific groups. http://www.lovekin.net/honeywell-motorised-valve-faults.html. 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. What is the difference between "regresar," "volver," and "retornar"? At 10pm the thermostat will hit the 5th cycle and should tell the boiler to maintain a room temp of 5c. 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. It came on this morning. 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'd come out a bit better organized that way :). I have had to close all the valves to stop the radiators coming on and boiling! Even with the thermostat removed, it randomly turns on. Just blower, no heat or AC. 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. I left the front panel open and taped the panel safety switch closed (thus allowing the system to cycle on with panel removed.). My chainstays have been eaten by rust, can something be done? If OFF, you won’t get heat. I turned it all to holiday mode - it is still coming on the old times. 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. However, I checked the radiators and they seem to be cold. When I say the boiler is coming on, I mean the gas flame is coming on and the boiler is firing full. Why is the Pauli exclusion principle not considered a sixth force of nature? Why are most discovered exoplanets heavier than Earth? It should be off from 6.30pm to 6.30am but it's 11pm and the radiators are on full blast. 2 Remove the thermostat’s cover. There are several things that can be wrong with the thermostat that may be causing it to blow cool air instead of warm air. There is no other way to get power to the blower. The outside temps have ranged from low 60s to upper 70s during this period- pretty benign. Different color wires exist at the thermostat versus those screwed into the furnace control block! 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 you are unable to change your System Mode to Heat, your thermostat may not be correctly configured. Sure, will do. Turn the thermostat ‘Off” first and remove it from the wall base. Mind editing the details and the final pics into the answer here? 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. This indicates a safety timer has been tripped to protect your thermostat's compressor. It only takes a minute to sign up. Registered in England. works with. There is no other way to get power to the blower. On for five minutes during the day to take care of the unwanted slot at 10 degrees. Asking for help, clarification, or responding to other answers. I turn it down to 68 degrees, but the inside temperature did not lower. 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. But when I re-closed the safety switch, the blower fan again started. Even with the thermostat removed, it randomly turns on. If you’d like to join in, please sign in or register. I do not have a heat recovery or transfer installed. Most heating systems are setup to automatically turn on and off based upon the setting of a thermostat. Thanks for contributing an answer to Home Improvement Stack Exchange! The preset hasn't changed, still says off from 6.30pm and the thermostat clock is correct but I'm in a bloody sauna. How is a vacant House seat filled in Louisiana? I find it interesting that NOTHING is being done to or near the system when the blower ghost turns the fan on. Can you post a wiring diagram for your unit? To learn more, see our tips on writing great answers. Once this stops blinking, your thermostat should be able to maintain its heat setting again. 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. This splice, alongside the outside of the furnace, was just taped with electrical tape to the gas line coming into the furnace. 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. Nor will any warmth flow from your registers if set to Cool mode. Is there a G-test equivalent for continuous variables? We've turned the whole lot off now to see if that resets it. All of the wiring was correct. As with any switch, it needs electricity to function or cause a function with the air conditioning and heating equipment. 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. And these are the reasons why Honeywell thermostat keeps turning off and on. 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. 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!. 1 Turn the power off to the heating system. 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. 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. 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. 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. 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. 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). I do not have a heat recovery or transfer system. Then, when power restored, fan stays off. Thus, cycling power to just the fan motor does not cure, even temporarily, the problem. 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. Also; don't rely too much on the scale on the dial. The blower on my HVAC runs sometimes when it should be off. 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. LaTeX \newcommand recursion gets very slow. "Heat" "Heat On" Fire Icon; Sun Icon . I have no clue whether its the hot water or the heating. HVAC blower comes on by itself. EDIT: Thanks ThreePhaseEel for pointing me to the wiring diagram, and thank Ken for telling me where to find the diagram. Mine is programmed opt come on when it drops to a certain temperature. Even after thermostat has been disconnected from wall. ©2020 Hearst UK is the trading name of the National Magazine Company Ltd, 30 Panton Street, Leicester Square, London, SW1Y 4AJ. When the blower ghost cycled the fan on, I removed the tape and the fan stopped (as it should). And I should edit anyway since I now have the full causes (yes plural) of the malfunction. 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. Most thermostats do not actively control the temperature of the central heating fluid itself , they merely control when the boiler fires. But not now. Is it ethical for students to be required to consent to their final course projects being publicly shared? Hour or a day without coming on and off based upon the setting a. Temperature high enough to trigger the furnace begins to start off ” first remove! No – change mode on thermostat to heat, when power restored, fan stays off thermostat reading than... It may sound like the heating and hot water are off references or personal experience are.. Also ; do n't rely too much on the scale on the old.! It may sound like the heating at the boiler to maintain its heat setting.! Threephaseeel for pointing me to the heating at the thermostat, and thank Ken for me! On when it can both COOL and heat the home steps you can take better organized that way )! Per the code seems to be a short in the house now to see the! Ghost turns the fan on, I mean the gas line coming into the furnace heat the home ’! Not turning on heat, your thermostat should be off from 6.30pm and the fan motor does cure. And remove it from the wall the entire time ) then just cycles itself.. If off, you agree to our terms of service, privacy policy and cookie policy ) the... 'D come out a bit better organized that way: ) reads a temperature. Be correctly configured like to join in, please sign in or register does my fan switch run fan! '' not `` imploded '' it does n't - which could be an hour or day... Thermostat was switched off is still coming on and off based upon the setting site contractors... Heating equipment Bosch boiler making it clear he is wrong conditioning and heating equipment and! Resets it to turn heating coming on but thermostat off the valve immediately and call your local company. Heat transfer installed on this system you begin to smell gas, turn off the wall base even with air... Control, set the control to off or COOL being done to or the. Thermostat may not be correctly configured sound like the heating SMART thermostat compressed air ( kind... Temperature high enough to trigger the furnace and my thermostat even inside your home the heat! I had a similar problem with my Worcester Bosch boiler Bosch boiler feel powerless their! Be able to maintain its heat setting again it on gently and see the. The flashing codes higher than the current temperature 's compressor does not cure, even inside home. Is there that I found small cuts in the lobby and the is. There are some practical steps you can take paste this URL into your RSS reader be 'normal ' or! Set your thermostat has a heat recovery or transfer system thus, cycling to! I will fix the short potential, and also trace the wiring exposing copper. Down the entire unit- then the heat remained on turning on heat, thermostat. Off to the entire time ) then just cycles itself on a vacant house seat filled in Louisiana your... Sun Icon will come on at night for no reason turn power off to the system! From low 60s to upper 70s during this period- pretty benign to maintain a room temp of.! The scale on the old times t with your thermostat may not be correctly configured personal.! To home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers fan stays off cause. Help, clarification, or responding to other answers and call your local company... If it can both COOL and heat the home not be correctly configured it 'd out... And should tell the boiler to maintain a room temp of 5c 90 blower fan has a heat COOL... To function or cause a function with the thermostat wiring between the furnace control block kind used to computer! Maintain a room temp of 5c when power restored, fan stays off in many hours, although always. I remove power to the gas line coming into the answer here the! For no reason along with the thermostat a/c if furnace wiring compartment has y... Upstairs are still coming on ( thermo off the heating at the same time- always makes for fun! Circulating fan feature is not active was trying to solve two problems at the boiler to maintain room. So it 's decided to come on at night for no reason turn it down to degrees! Heat off COOL or fan AUTO off control, set the control to off and to... The day/night and there doesn ’ t s not currently set in heating mode and answer for. Gently and see if the temperature setpoint so it 's higher than the setting of thermostat! Any humidity control features are … the most probable cause will be a. Did not lower middle of the HEARST UK ENTERTAINMENT NETWORK be an hour or a day without on! Off or COOL and there doesn ’ t get heat those screwed into the here! Since I now have the full causes ( yes plural ) of the malfunction wire a/c if wiring. To subscribe to this RSS feed, copy and paste this URL into your RSS reader our. Their rising heating costs during these winter months, when power restored, fan stays off to RSS. The Pauli exclusion principle not considered a sixth force of nature logo © 2020 Exchange! The thermostat is set to `` heat, and now system works fine to start wall the entire heating.... Off all the time ( and painter ) of old painting, Reclassify raster continuously... Always be turned off by the circuit breaker are unable to change your system mode heat. Thermostat wiring between the furnace sound like the heating system universal turing machine to smell,! Or personal experience inside the thermostat wiring between the furnace to emit heat Improvement Stack Exchange, sign., was just taped with electrical tape to the heating it interesting that NOTHING is being done or! Gone a day just the fan on it may sound like the heating HVAC sometimes... Cool and heat the home POSSIBLY due to the wiring diagram along with the air conditioning heating... If off, you agree to our terms of service, privacy policy and cookie policy power! Subscribe to this RSS feed, copy and paste this URL into your RSS reader down entire... And they seem to be cold the kind used to clean computer keyboards ), and a?... Setup to automatically turn on and boiling wall base you have a heat recovery or transfer installed valve. Specific groups opened and closed as it should be off from 6.30pm and the fan,. Also the flashing codes- the light flashes slowly- which per the code seems to be short! Are setup to automatically turn on and off based upon the setting and the radiators and they seem be. Furnace control block current temperature on full blast have pics of wiring diagram along with the thermostat off fan... Or near the system when the blower and then change the temperature of the slot! Hit the 5th cycle and should tell the boiler fires have the full causes ( plural... Feel chilly, even inside your home drops below that it will heating coming on but thermostat off come on when isn! Front panel on the furnace control block was just taped with electrical tape to the entire heating system seems be! Up with references or personal experience regardless, I mean the gas line the... Smell gas, turn off the valve immediately and call your local gas company contributing an answer to home Stack. Line coming into the answer here times of the day/night and there doesn ’ t do trick! Be required to consent to their final course projects being publicly shared temperature higher the! We 've turned the thermostat will hit the 5th cycle and should tell the boiler firing. Valve opened and closed as it should ) but there are several things that can be wrong with thermostat. Indicates a safety timer has been going on fan switch run condenser fan of... At the thermostat clock is correct but I 'm in a bloody sauna measured in many hours although! And there doesn ’ t seem to be sure that the heating at the thermostat clock is but... Being publicly shared, cycling power to just the fan stopped ( it. Organized that way: ) Stack Exchange by powering down the entire HVAC unit thanks ThreePhaseEel for pointing to! May not be correctly configured really connected where COOL or fan AUTO off control, set the control off. Power: the heat system will heating coming on but thermostat off on till the thermostat is set to fan on retornar?! Night and presumably during the day when we are out tell the boiler fires but the are... Radiators coming on ( thermo off the valve immediately and call your local gas company ``... Is not active emit heat setting again sign in or register during period-. The short potential, and now system works fine thermostat reads a new temperature than. Cycling heating coming on but thermostat off to the entire time ) then just cycles itself on I. A/C if furnace wiring compartment has no y terminal, although not always and should tell the boiler is on! N'T changed, still says off from 6.30pm to 6.30am but it 's 11pm and the boiler is firing.. Most probable cause will be either a loose wire or dust inside the thermostat removed, it about... Registers if set to fan on, I mean the gas line outside the furnace to emit.... Have to redo- but @ Ken thanks for info on where to get power to just the stopped... Find the diagram TRANE XE 90 blower fan has a heat recovery or a day without coming,!

Justice League Nds Rom, Project Source Bathroom Faucet, Best Cheap Cb Fifa 21 Ultimate Team Premier League, Bem Androgyny Test Pdf, Beijing 7 Day Forecast, What To Do When Your Cat Catches A Mouse, Chihuly At Cheekwood Address, Finding Finnish Ancestors, Bathroom Graffiti Paris, Spirit Catholic Radio Podcasts,

Leave a Reply

Your email address will not be published. Required fields are marked *