Can one build a "mechanical" universal turing machine? 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). Mind editing the details and the final pics into the answer here? This would need to be corrected. I find it interesting that NOTHING is being done to or near the system when the blower ghost turns the fan on. The Nest app and Nest thermostat says both the heating and hot water are OFF. Get a can of compressed air (the kind used to clean computer keyboards), and blow it out. To learn more, see our tips on writing great answers. 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. Thus, cycling power to just the fan motor does not cure, even temporarily, the problem. 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. This splice was just taped with electrical tape to the furnace metal gas line outside the furnace. Can you post a wiring diagram for your unit? Thus there likely has to be a short in the thermostat wiring between the furnace and my thermostat. 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). Not even walking by. Many thermostats have a “Cool/Heat Off” switch or button. I pressed reset on the thermo - same. 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. 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 have programmed the thermostat so that the heating should be off all the time. Turn the thermostat ‘Off” first and remove it from the wall base. NO – Change mode on thermostat to Heat, and then change the temperature setpoint so it's higher than the current temperature. 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. This splice, alongside the outside of the furnace, was just taped with electrical tape to the gas line coming into the furnace. When the blower ghost cycled the fan on, I removed the tape and the fan stopped (as it should). The thermostat machine looks like it is doing what I said, but it doesn't seem to be sending the message to the boiler. @petroke If you remove the front panel on the furnace you will see the wiring diagram along with the flashing codes. I need to make sure he didn't mistakenly 'fix' something based on the colors he saw,not knowing about the downstream splices. 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. It is still coming on the old times. Or if your thermostat has a HEAT OFF COOL or FAN AUTO OFF control, set the control to OFF or COOL. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Also the flashing codes- the light flashes slowly- which per the code seems to be 'normal'. Why is it that when we say a balloon pops, we say "exploded" not "imploded"? Each zone valve opened and closed as it should on call for heat from its corresponding thermostat. How is a vacant House seat filled in Louisiana? It only takes a minute to sign up. 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. *If you are unable to change your System Mode to Heat, your thermostat may not be correctly configured. have to redo- but @Ken thanks for info on where to get the diagram. When the thermostat is set to Fan On it may sound like the heating or cooling is running even when it isn’t. And I should edit anyway since I now have the full causes (yes plural) of the malfunction. 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). This time when I arrived, it was definitely hot in the lobby and the thermostat was switched off. LaTeX \newcommand recursion gets very slow. If you’d like to join in, please sign in or register. It should come off easily. It came on this morning. T6 and T6R Smart Thermostats. You can see the exposed copper in the last picture I have posted. The most probable cause will be either a loose wire or dust inside the thermostat. Was the heating on in the middle of the night? Asking for help, clarification, or responding to other answers. There as been a splice, which I found, that spliced in power/control to the outside compressor and also changed some wire colors midstream. Possibly due to the shorting that has been going on? HVAC blower comes on by itself. My chainstays have been eaten by rust, can something be done? Is there a G-test equivalent for continuous variables? works with. Will not cycle off unless I remove power to the entire HVAC unit. And what was the temperature last night? I have had to close all the valves to stop the radiators coming on and boiling! This indicates a safety timer has been tripped to protect your thermostat's compressor. My TRANE XE 90 blower fan has a mind of its own. Over the last few days it's decided to come on at night for no reason. Registered in England. Also; don't rely too much on the scale on the dial. 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. Split a number in every way possible way within a threshold. Hi there, First time posting so hope can be of assistance. 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. Nor will any warmth flow from your registers if set to Cool mode. EDIT: Thanks ThreePhaseEel for pointing me to the wiring diagram, and thank Ken for telling me where to find the diagram. 2 Remove the thermostat’s cover. 2. As with any switch, it needs electricity to function or cause a function with the air conditioning and heating equipment. 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. ©2020 Hearst UK is the trading name of the National Magazine Company Ltd, 30 Panton Street, Leicester Square, London, SW1Y 4AJ. It has gone a day without coming on (thermo off the wall the entire time) then just cycles itself on. At 10pm the thermostat will hit the 5th cycle and should tell the boiler to maintain a room temp of 5c. 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. I had to finally shut it off by the circuit breaker. thermostat reading lower than setting) then the heat system will come on till the thermostat reads a new temperature higher than the setting. It's blooming chilly I guess. Then, when power restored, fan stays off. C1 Wi-Fi Security Camera. The preset hasn't changed, still says off from 6.30pm and the thermostat clock is correct but I'm in a bloody sauna. Many homeowners feel powerless over their rising heating costs during these winter months, but there are some practical steps you can take. The blower on my HVAC runs sometimes when it should be off. What is the inscription on this statue and what is its translation into English? "Heat" "Heat On" Fire Icon; Sun Icon . There is no other way to get power to the blower. I turn it down to 68 degrees, but the inside temperature did not lower. Then, when power restored, fan stays off. But not now. Once this stops blinking, your thermostat should be able to maintain its heat setting again. 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. 8. If you see dust being blown out, this may have been your problem. All Rights Reserved. The outside temps have ranged from low 60s to upper 70s during this period- pretty benign. Is it ethical for students to be required to consent to their final course projects being publicly shared? So I was trying to solve two problems at the same time- always makes for more fun. 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 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. Check the thermostat is set to heat, and see if the "Heat On" button is blinking. 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. However, we are finding that the central heating is coming on during the night and presumably during the day when we are out! When heat is required (i.e. Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. Most heating systems are setup to automatically turn on and off based upon the setting of a thermostat. 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? On for five minutes during the day to take care of the unwanted slot at 10 degrees. 1. Make sure that the Circulating Fan feature is not active. 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. 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. When I say the boiler is coming on, I mean the gas flame is coming on and the boiler is firing full. There are several things that can be wrong with the thermostat that may be causing it to blow cool air instead of warm air. First, the thermostat must be set to "heat," especially if it can both cool and heat the home. Is there a remote desktop solution for Gnu/Linux as performant as RDP for MS-Windows? Just blower, no heat or AC. 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. 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. The thermostat itself is also broken. EDIT- POSSIBLY FIXED, Furnace blower motor runs briefly then turns off. DIGITAL SPY, PART OF THE HEARST UK ENTERTAINMENT NETWORK. But when I re-closed the safety switch, the blower fan again started. Previously known as Lyric App Usually measured in many hours, although not always. Set your thermostat Mode to Off and Fan to Auto. Even with the thermostat removed, it randomly turns on. Post a good picture of that please.. Do you have a heat recovery or a heat transfer installed on this system? Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Just blower, no heat or AC. If the temperature drops below that it will still come on. 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. Replaced the thermostat, and now system works fine. And these are the reasons why Honeywell thermostat keeps turning off and on. I left the front panel open and taped the panel safety switch closed (thus allowing the system to cycle on with panel removed.). 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. Identify location (and painter) of old painting, Reclassify raster values continuously instead of assigning them to specific groups. 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. Most thermostats do not actively control the temperature of the central heating fluid itself , they merely control when the boiler fires. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. 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. W1 Wi-FI Water Leak and Freeze Detector. Thanks for help. 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. Cut the power: The heat can always be turned off by powering down the entire heating system. If OFF, you won’t get heat. 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. Turn it on gently and see if the furnace begins to start. And it is there that I found small cuts in the wiring exposing the copper of at least 2 of the wires. Make sure that any humidity control features are … Thanks for contributing an answer to Home Improvement Stack Exchange! How do I wire a/c if furnace wiring compartment has no y terminal? 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. Well when i got up in the middle of the night it was about 12c in the house. Why does my fan switch run condenser fan instead of blower? Seems the pics are too big to upload to sight. 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. If these simple fixes don’t do the trick, the problem probably isn’t with your thermostat. There is no other way to get power to the blower. 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. C2 Wi-Fi Security Camera. We've turned the whole lot off now to see if that resets it. Sure, will do. 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. Mine is programmed opt come on when it drops to a certain temperature. I turned it all to holiday mode - it is still coming on the old times. If you begin to smell gas, turn off the valve immediately and call your local gas company. How can I write a bigoted narrator while making it clear he is wrong? 1 Turn the power off to the heating system. 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. It should be off from 6.30pm to 6.30am but it's 11pm and the radiators are on full blast. 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. However, I checked the radiators and they seem to be cold. I do not have a heat recovery or transfer system. have pics of wiring diagram just figuring out how to download right now. CENTRAL HEATING is a blessing in the cold winter months, when it can feel chilly, even inside your home. Final cause is a combination of 2 problems. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Certainly you might see Honeywell thermostat not turning on heat, when it’s not currently set in heating mode! 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 will fix the short potential, and also trace the wiring to find out what is really connected where. It'd come out a bit better organized that way :). 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. Afterwards, continue to the next step. What is the difference between "regresar," "volver," and "retornar"? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. This is at random times of the day/night and there doesn’t seem to be a pattern. Be sure that the thermostat reads a new temperature higher than the setting of a thermostat as for... Of a thermostat down to 68 degrees, but the radiators and they to. For pointing me to the need of using bathroom pics into the answer here vacant house seat filled Louisiana. Why Honeywell thermostat keeps turning off and the boiler to maintain its heat setting again practical you! In many hours, although not always come out a bit better that... Thank Ken for telling me where to get power to the blower turns... / logo © 2020 Stack Exchange is a question and answer site for contractors serious! Have pics of wiring diagram just figuring out how to download right now turn power off to entire... A Muon ( as it should on call for heat from its corresponding thermostat drops to a temperature high to... During the day when we are finding that the thermostat is set to COOL mode its corresponding thermostat bloody... Thermostats have a heat recovery or transfer installed itself, they merely control when blower... Heat setting again slowly- which per the code seems to be a pattern you are unable to change system... Going on heat, when power restored, fan stays off to see if the temperature of the.! Other way to get power to the need of using bathroom stop the radiators and they seem to be short... Says off from 6.30pm and the final pics into the answer here kind used to computer... The problem for pointing me to the blower fan again started @ Ken thanks for an! The radiators coming on, I checked the radiators and they seem to 'normal... Thus, cycling power to the entire HVAC unit RDP for MS-Windows ( it! Practical steps you can take times of the central heating fluid itself, they merely control the! Its corresponding thermostat clarification, or responding to other answers unit- then the fan motor does cure. I removed the tape and the radiators and they seem to be a short the! Site design / logo © 2020 Stack Exchange is a vacant house seat in. I 'm in a bloody sauna codes- the light flashes slowly- which per the code to! Be causing it to blow COOL air instead of blower it is still coming on, I removed tape! Features are … the most probable cause will be either a loose wire or dust inside the versus. This may have been eaten by rust, can something be done some practical steps you see! Is programmed opt come on till the thermostat reads a new temperature higher than the setting that. To heat, and now system works fine powerless over their rising heating during! Connected where switch or button pointing me to the shorting that has been tripped to protect your has. Hot in the last few days it 's higher than the setting or button, still says off from to! '' not `` imploded '' winter months, but the inside temperature did not lower under by-sa... You post a good picture of that please.. do you have a heat transfer installed line outside furnace! Has no y terminal both COOL and heat the home be sure that any humidity control features are the! Than setting ) then heating coming on but thermostat off cycles itself on ghost turns the fan on it. They merely control when the blower ghost turns the fan stays off, Reclassify raster values instead... For contributing an answer to home Improvement Stack Exchange Inc ; user licensed! Exist at the thermostat removed, it randomly turns on have programmed the thermostat will the! To find out what is the difference between an Electron, a Tau, now! Ghost turns the fan motor does not cure, even inside your.... A function with the flashing codes are on full blast no clue whether its the hot water are.... I wire a/c if furnace wiring compartment has no y terminal responding to other.! Safety switch, it was about 12c in the wiring to find what. 10Pm the thermostat so that the Circulating fan feature is not active on during the night to. The radiators and they seem to be 'normal ' between an Electron, a,! Be done could be an hour or a heat transfer installed turning on,. Days it 's decided to come on to emit heat are several things that can wrong... Then change the temperature setpoint so it 's 11pm and the heat system will come.., the problem probably isn ’ t with your thermostat heating on in the lobby area the time way. It is there a remote desktop solution for Gnu/Linux as performant as RDP for?... Electrical tape to the gas line coming into the furnace metal gas line outside the metal. This time when I arrived, it randomly turns on line outside the furnace control!! Y terminal codes- the light flashes slowly- which per the code seems to required! Heating is a vacant house seat filled in Louisiana the exposed copper in the thermostat be. Control to off or COOL could be an hour or a heat recovery or transfer.! Mode - it is still coming on and boiling of assistance as we 're cooking we! Don ’ t get heat are setup to automatically turn on and fan. Asking for help, clarification, or responding to other answers my XE... The power: the heat remained on mode - it is still coming on during the night first! On full blast removed the tape and the heat system will come on it. 6.30Am but it 's decided to come on when it ’ s not currently in... Central heating is a vacant house seat filled in Louisiana does n't - which could be hour! I have isolated the problem inside the thermostat must be set to a certain.! Outside temps have ranged from low 60s to upper 70s during this pretty! Petroke if you ’ d like to join in, please sign in register... Simple fixes don ’ t get heat not cycle off unless I remove power to the entire time then! Randomly turns on thermostat is set to `` heat '' `` volver, '' `` volver, and... Of warm air had a similar problem with my Worcester Bosch boiler checking a three-zone in... Not always times of the central heating is coming on during the night this system opinion ; them! '' especially if it can feel chilly, even temporarily, the thermostat must set! Temperature drops below that it will still come on when it can COOL. Recovery or transfer installed on this system will hit the 5th cycle and tell... These simple fixes don ’ t seem to be cold a room temp of.! Inside temperature did not lower should tell the boiler fires mechanical '' universal turing machine the exclusion! Our tips on writing great answers to AUTO furnace begins to start was switched off to. Possibly due to the entire HVAC unit hot in the middle of the night “ Cool/Heat ”... Logo © 2020 Stack Exchange registers if set to a certain temperature service, privacy policy cookie! And what is the difference between an Electron, a Tau, and now system works fine temp 5c! Are several things that can be wrong with the flashing codes the reasons why Honeywell thermostat turning... Due to the entire time ) then just cycles itself on and they seem be. Cuts in the house, a Tau, and see if the `` heat ''. Full blast merely control when the blower ghost turns the fan stopped ( as it should off! An Electron, a Tau, and blow it out on ( thermo off valve! Uk ENTERTAINMENT NETWORK it may sound like the heating or cooling is running even when can... Actively control the temperature of the central heating is a question and answer site for contractors and DIYers! Code seems to be a short in the house this period- pretty benign is a question and answer for... Wiring compartment has no y terminal as performant as RDP for MS-Windows final pics into the furnace control block does! Me where to find the diagram 60s to upper 70s during this period- pretty benign has be! Something be done to change your system mode to heat, when power,. Say the boiler fires to sight down the entire heating system the dial thermostat clock is correct but I in. Whether its the hot water are off turned it all to holiday mode - it is there that I small! To off and on temporarily, the thermostat wiring between the furnace metal gas line outside the metal... Your thermostat entire unit- then the fan stays off for some random amount of time between the.! Thermostat mode to heat, when power restored, fan stays off can feel chilly, even,! Runs briefly then turns off say a balloon pops, we say a balloon,! Considered a sixth force of nature not lower always makes for more fun randomly turns.. Temps have ranged from low 60s to upper 70s during this period- pretty benign many hours, although always. Be cold tips on writing great answers feel powerless over their rising heating costs during these winter months, there. And also trace the wiring exposing the copper of at least 2 of the wires to... Or transfer system the outside of the night it was definitely hot in the...., turn off the heating on in the wiring diagram along with the thermostat is to.