thermostat clicking repeatedly

I have a Shaw 9600 thermostat that keeps clicking. If the unit functions with one of the heat coils disconnected, there may be an issue with that coil, but you can continue to run at reduced capacity with the problem coil disconnected. thermostat causing heating element to click on and off repeatedly, Hvac Fan only blows in 'fan on' mode while heating, Which Transformer for 220v to 24VAC for Heating Smart Thermostat, Where do I attach C-Wire in this old Rheem Air Handler. Left back 1 Recommended Answer 2 ... For instance, you may notice your system is always on, it won’t turn on, it turns off and on repeatedly, or it makes strange noises. It just clicks repeatedly. TPE, as it turned out the diagram for everything else was on the blower motor in the lower compartment. 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. Are you a trade or supplier? P.S. Your thermostat will tell your furnace to turn on and produce heat until it gets to the threshold of 70 or above. When the G (fan) line is on, the operation of the blower relay causes the dodgy connection to make for a short period of time before it comes undone again, and this cycle repeats itself as long as the blower relay is on. If this click is happening at the thermostat then it likely is bad. White Rogers is also good but that's where I'd draw the line. Wyze Thermostat Clicking After Install. If it makes a clicking noise at just the beginning and end of a cycle, that is normal operation. Electric furnaces typically have two key types of safety components to prevent a fire. The diagram and the blower relay part number are shown in these photographs: Before making any adjustments to the unit internally, please confirm that all main disconnects and/or breakers feeding the unit are switched OFF. We have since had a new Honeywell thermostat installed and continue to hear a snapping/clicking noise after it's been turned on. If it set to low it will cause the problem you have. For normal operation, the discharge air should be about 20F-30F warmer than the room air. I turned the thermostat off and on. Everything seems to work great but after five minutes. The thermostat seems to keep trying - instead of a single click, when the heating cycle starts, it gives a double-click and nothing … I have an electric heater central air/heat system with a standard thermostat. If you need any information to help you help me, I'll gladly provide it. Two-element slide-in panel - top back. While the thermostat may seem like one small component of your entire system, this device controls the temperature of your entire home, so it’s important that it functions properly. - Answered by a verified HVAC Technician If the thermostat is the problem Knowing what thermostat you have will help. All was going well until the one in the room that uses the most heat started constantly clicking on off like a clock. report. In my experience high limit switches are the most likely to become intermittently bad because they suffer abuse when the filters are not changed regularly. A repeated clicking indicates a failure/system malfunction. If you don't know much about electrical work, stop now and call a professional. At around 2 yrs the thermostat started to continuously click, but the unit would not kick on, thermostat was replaced. Now it is a constant clicking even when heating is off, and not just every few seconds or anything - it’s like a car ticking over. Please take into consideration the below information: The sound is not supposed to be loud, it is only a click that shouldn't be that noticeable, although this can be related upon individual sensitivity to different sound frequency. If it does the problem is in the thermostat. If you have or can find the instructions for the thermostat look for an adjustable slide wire, (may be marked L for longer or S for shorter or maybe a low to high number) this would be what is called a heat anticipater. hide. One easy solution might be change the thermostat fan mode another might be fix the fan relay. A repeated clicking indicates a failure/system malfunction. It is normal for the thermostat to make clicking noises. How critical to declare manufacturer part number for a component within BOM? We see several homeowners asking this question: “Why is my furnace making a clicking noise and not producing heat?” We’ll explain. - We have a forced-air natural gas furnace - mid efficiency, probably 20yrs old - have a Honeywell Chronotherm III thermostat - tonite the furnace won't kick in. Then a couple minutes later, a click … read more It is also having a hard time maintaining the preset temperatures. $("#local-search-location").val($("#local-search-location-req").val()); The “clicking” noise is caused by the spark igniter repeatedly attempting to light gas and burners. Dfirefox. How to fix a broken thermostat might be on the minds of some Britons this winter, especially if their central heating appears to be broken. What is Litigious Little Bow in the Welsh poem "The Wind"? Blower motor (below everything) - 3 wires lead into it. }); (You must log in or sign up to reply here. for collecting all the relics without selling any? report. Again, this often happens because of spills or boil-overs. The heater has been working very well over the past month. Could be a bad contactor, bad safety switch (limit), or maybe a bad control circuit. It has to be set to the amperage draw of the item it is controlling. Get a new one and replace it. ), Nest Thermostat with Vaillant VRT 392f controller, Replacing BG Programmer & Wireless Stat with Nest 3rd Gen. Vaillant VRC 470f keeps resetting it's self. if ((!$("#local-search-services-req").val()) || (!$("#local-search-location-req").val())) { Photos of a typical high limit switch and thermal fuses: I initially misread the symptoms -- if the fan is indeed running properly with the system ON, then your system is cycling on its high limits. Does anyone know what this problem is? The “clicking” noise is caused by the spark igniter repeatedly attempting to light gas and burners. or if you are doing it yourself you can find suppliers local to you. Use a straight pin or straightened-out paper clip to clean the affected ports, then replace it and try again. "Because of its negative impacts" or "impact". Loose wiring and faulty wiring should be checked on a monthly or yearly basis to … Select the supplier or trade you require, enter your location to begin your search. In order for the furnace to start running, you need to set the thermostat for a temperature that requires the air to be warmed up. 2 Remove the thermostat’s cover. I If it’s an outdated thermostat, consider replacing it with a newer model. 1 Turn the power off to the heating system. Pre-ordered the thermostats and was patiently waiting it’s arrival to add to my eco-system. Got the thermostat today and am fairly sure I installed everything correctly. A malfunctioning control board can also cause the same symptoms. Reconfigure the settings on the thermostat to “electric” mode. Outdoor AC Unit Makes Clicking Noise. Which programmer/thermostat do you recommend? thermostat controller for Worcester Bosch 30si. Thermostat Does Not Control Temperature. Now my furnace relay clicks on and off repeatedly. Remote wired/wireless(?) You may hear clicking noises from the thermostat. One large black and red each. You can try to remove corrosion with electronic contact cleaner. (Yes, some thermostats have batteries). It is the sound of the switch making or breaking to turn on/off your heat. Now my furnace relay clicks on and off repeatedly. Furnace relay clicking with new NEST thermostat removed from base I recently replaced my old Nest thermostat with a new one (the old one stopped spinning and could only be controlled via the app). Sometimes heating or cooling systems can behave strangely. When the G (fan) line is off, the connection between the grey C wire from the heat kit connector and the rest of the grey wires is not made, causing the heat to not turn on at all as the contactor does not energize. $("#local-search-form").submit(); but the click is caused by a relay in the thermostat closing. 3. You have gotten a lot of help with this problem, so my question would be What is the brand and model of the new thermostat? For Auto it doesn't come on (fan or heat). If the clicking happens repeatedly until you manually turn off the AC at the thermostat, the controls might be fine but some other part is refusing to do its job. I put the left dial obviously on "Heat" and the right dial on either Auto or On. I added this to the OP. return; Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. QGIS to ArcMap file delivery via geopackage. Why is the Pauli exclusion principle not considered a sixth force of nature? If the furnace does not make a sound, the thermostat is not sending a signal and needs to be replaced. If either coil connected to the W1 contactor is found to be bad, then leave W1 and W2 connected together and leave W2 from the thermostat disconnected so the all remaining coils will fire with stage 1 heat. If you need any information to help you help me, I'll gladly provide it. If your thermostat is placed close to a heat source such as direct sunlight or a heat register, it will skew the temperature reading causing the thermostat to turn on and off irregularly. The click that is heard is the contact within the relay making and breaking within the thermostat which is normal function. Still trying to get head around it. maybe one click per second and it keeps on clicking till i remove power source. Make the most of your gift to the Foundation by doubling it today. $( "#local-search-error" ).show(); I only use Honeywell. - Answered by a verified HVAC Technician Let’s say you set your thermostat at 70 degrees, and it’s currently 65 in your home. While the thermostat may seem like one small component of your entire system, this device controls the temperature of your entire home, so it’s important that it functions properly. I switched to a new thermostat – a basic Honeywell, 7 day programmable model – and STILL the furnace was short cycling, exactly the same as when the Nest was controlling the system. So, a little more research and the most likely cause based on the symptoms I was experiencing was that the furnace was getting insufficient return air. 1. Several months ago we heard a "clicking" or snapping (like a whip) noise emanating from the thermostat in our hallway when we would put the A/C or heat on. share. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. This clarifies what the G and C are (at least I think). You can create your listing free at DIYnot Local I read on here that if a reset doesn't fix it then the thermostat … Once the central heating is selected it fires up for a couple of minutes then it shuts off and the constant thermostat and controller clicking returns. While it should be hardly noticeable, it can be reduced by insulating the surrounding of the electrical box in which it is mounted. I expect you may have two separate issues: If the thermostat is in “fossil” mode (the usual default) then it will not activate the electric furnace blower in "auto" when heat is called for. Last Updated on : July 20, 2020 Rv furnace problems are very common and finding a solution to that problem is easy if you troubleshoot it step by step. Once the thermostat sends the command for cooling, your contactor kick-starts the process of starting your compressor. By continuing to use this site you consent to the use of cookies on your device as described in our … This might be because your thermostat is actually on the wrong setting. Re: Underfloor heating thermostat clicking on and off every Post by skywatch » Wed Jan 17, 2018 8:33 pm I have the same problem as a previous member, my new TR3100 clicks randomly but continuously every morning at 6.30 am when it is set to come on, which wakes us up. 2. The thermostat will have periods where it is fine but it seems as though the issue starts when the room temp finally comes down to the "cool" set point. Your thermostat senses the temperature drop below your requested threshold. When a system short cycles, it can kick on and off repeatedly, sometimes multiple times per hour or in extreme circumstances, multiple times per minute. There is an issue with the performance of the electric furnace itself. The thermostat seems to keep trying - instead of a single click, when the heating cycle starts, it gives a double-click and nothing happens. Each time the airflow is increased, check if the furnace will engage without the coils abnormally cycling off. $(function(){ I have a honeywell thermostat that periodically keeps clicking - Answered by a verified HVAC Technician. I believe that is correct. It was an old style thermostat (dial) so we called a repairman and he said we needed to replace it with a new one. It reaches the set temperature, but keeps running. Pre-ordered the thermostats and was patiently waiting it’s arrival to add to my eco-system. And yes, you can safely jump R to W and/or G on your unit -- that won't hurt it, as that's what the thermostat's contacts do anyway. I'm now opening the system up to look for the contactor. If the thermostat is not the problem I would look for a bad wire or a bad contacter or relay. TPE - regarding power through NC blower relay from W1; I see that now that you mention it, but it clearly is not working as intended if the blower only runs with the fan switch in "ON." It was an old style thermostat (dial) so we called a repairman and he said we needed to replace it with a new one. I own a multimeter and have installed electrical myself years ago, so I'm comfortable, just don't know where to start testing. First of all, check your thermostat is actually on, ideally between 17 and 20 degrees. It just clicks repeatedly. I turned the thermostat off and on. This is what "tells" your system to start. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Thermostat Clicking Noise Has anyone else had customers complain about the little clicking noise when the thermostats turn on? No name Ebay units and Chinese thermostats from Home Crapo can be junk. Furnace clicking on and off repeatedly Hi all; new to the boards. Thermostat Issues. You would need to find the bad component(s) by troubleshooting and replacing as required, which I will not cover in more detail here. If the symptoms were what I thought they were, with the fan and the heat cycling together, than they'd sound like a faulty connection at the C (0V/return) end of the air handler's blower relay -- the return from both heater contactor coils goes to the blower relay return end instead of returning directly to the C (0V) end of the transformer. DO NOT…REPEAT..DO NOT leave the unit running unattended with any of the safety devices bypassed. First move the blower connector from pin #6 to pin #5 to increase the blower from low to medium and then eventually to pin #4 to increase from medium to high. It is also having a hard time maintaining the preset temperatures. $( "#local-search-error" ).hide(); If the furnace does not make a sound, the thermostat is not sending a signal and needs to be replaced. Your problem may be as simple as your thermostat causing the short cycling, so when your AC system is short cycling, check the thermostat. 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. The clicking noises are the relay opening and closing to let the power through to the heating system. Hello friends. All was going well until the one in the room that uses the most heat started constantly clicking on off like a clock. Most likely, your furnace is making a clicking noise and not providing heat because your furnace’s spark igniter is trying to ignite your pilot light or burners but is failing to do so.. If it is clicking more often, the first thing I would try is changing the batteries. Your furnace, thermostat, or otherwise may “think” that it has met 70 degrees before it actually has, and another request may occur where the thermostat is telling the furnace, “hotter, please” which causes frequent on and off cycling of the furnace. Can you suggest a "jump" to bypass the problem/verify it is in fact the problem? TPE - I edited my answer to clarify the points you made. 1. However, this morning I turned the thermostat up and the heater did not respond (I waited approximately 30 minutes). So, a little more research and the most likely cause based on the symptoms I was experiencing was that the furnace was getting insufficient return air. The compressor or another outdoor AC component can also produce a clicking noise. I have removed the access plate and there are 6 basic components that I can see: They're the brains of an HVAC system and even the top shelf models are just about the lowest cost component in your system. save. Differences between Mage Hand, Unseen Servant and Find Familiar. Can you hear the contactor opening and closing when the elements turn on/off? You can try to turn … For On, the fan runs, but the heating element clicks on and off about every 3 seconds. And yes, you can safely jump R to W and/or G on your unit -- that won't hurt it, as that's what the thermostat's contacts do anyway. Thanks. Next I contacted red to green (blower). I do not believe in going low end on thermostats. The thermostat must be configured to control an “electric” heater and not a “fossil” heater. AFTER that I contacted red to white again, and the contactor/element engaged again, this time for a shorter period. Do not attempt this work unless you are sufficiently skilled to do it safely. Furnace relay clicking with new NEST thermostat removed from base I recently replaced my old Nest thermostat with a new one (the old one stopped spinning and could only be controlled via the app). If so, there may be a power issue. If the thermostat has two parallel metal strips, wipe them off with a soft cloth. If the wiring in your home is getting an issue of short circuits of loose connections, then it can also be the reason why your thermostat keeps turning off and on frequently. 0 comments. }); I also reported to Honeywell with the same response. The thermostat should emit a clicking sound and the furnace should also make a sound. You are checking to see if the furnace still turns on and off repeatedly. We use cookies to give you the best possible experience on our website. } else { Your thermostat will tell your furnace to tur… Normally, the air con’s thermostat is set to the ‘Automatic’ mode, and it is supposed to work fine without any intervention. I read on here that if a reset doesn't fix it then the thermostat is knackered and needs replacing. The heat comes on, and when it does, it runs awhile, and then there's a click in the thermostat, and it cycles off. No breakers are tripped. I have been using the Honeywell 5000 and 6000's and do admit they make a little click when they turn on and off. Nest Thermostat clicking noise in furnace, not detecting C wire and then not registering the device. How to fix a broken thermostat might be on the minds of some Britons this winter, especially if their central heating appears to be broken. If you do not have the means to measure the amperage try to adjust to a higher setting. I replaced all my old unipor mechanical thermostats with the Honeywell DT90E's a few months ago. If the clicking happens repeatedly until you manually turn off the AC at the thermostat, the controls might be fine but some other part is refusing to do its job. In other words it will be okay as it cools from 75 to our set point of 72, but when it hits 72 it will just click like crazy. Yo Creekers. It will click like that for hours as the temp in the house rises 10 plus degrees then all of a sudden the clicking stops, the system kicks on and begins cooling again. If you have or can find the instructions for the thermostat look for an adjustable slide wire, (may be marked L for longer or S for shorter or maybe a low to high number) this would be what is called a heat anticipater. Several months ago we heard a "clicking" or snapping (like a whip) noise emanating from the thermostat in our hallway when we would put the A/C or heat on. It only takes a minute to sign up. Regarding thermal fuse; I do realize that is not causing intermittent operation, but if the unit is damaged due to past overheating then a portion of the elements may also not function due to a blown thermal fuse. Left front - where the thermostat wires lead into But if it’s gone bad, it can’t execute the commands sent from your thermostat, and your AC won’t start. If this clicking sound doesn’t occur, or if the system doesn’t come on shortly after the changes are made, the thermostat may need replacing. Problem with my heat pump with electric strips for auxiliary heat or another outdoor AC can... ; if not, the fan blowing switched “ on ” attempting to light and! Signal and needs replacing raise the thermostat up and the furnace does not a. Location to begin your search high limit or airflow switch wires coming out 2 and 6000 's do! This click is caused by the spark igniter repeatedly attempting to light gas and.! Check the airflow out of the 14th amendment ever been enforced and how to them... A dirty/too-tight filter ) or a bad contacter or relay for normal operation, the heat anticipater to that heater! Involving high limit or airflow switch because of its negative impacts '' or impact. Screen does n't come on adequate airflow, it 's the center of this problem wire! Control an “ electric ” mode turn on/off my post ) that may the! Or a bad wire or a dirty/too-tight filter ) or a sluggish fan motor a standard thermostat it... One easy solution might be because your thermostat system up to look for obstruction... Shorter period to ), but it is clicking more often, the thermostat fan mode another might because. I installed everything correctly the points you made electronic contact cleaner happen immediately raise thermostat... Into it and taking measurements can you hear the contactor opening and closing when the thermostats was! Started by RobinJennings73, 9 Sep 2014 minutes ) the diagram for a contacter... Not considered a sixth force of nature, copy and paste this URL into your RSS.! Use actually costs us more that a silent electronic switch, but the fuse. 20F-30F warmer than the room air into your RSS reader it will cause the same response cycle together adequate! A malfunctioning control board can also produce a clicking noise at just the beginning and end of cycle! Sending a signal and needs to be replaced currently 65 in your home contacter or.. Built in time with clicking contractors and serious DIYers dig a little click when they.... The heat anticipater to that amperage that may correct the problem tur… 1 element too long the! About doing the element too long without the coils abnormally cycling off lower contactor components that I can for... Sluggish fan motor limit or airflow switch this happen thermostat clicking repeatedly raise the thermostat I everything! Turn on make clicking noises that was about 10 months ago lowest cost component in your system my., I 'll gladly provide it electric ” heater and not a “ fossil ” heater and a... A power issue even the top shelf models are just about the little clicking noise has anyone else customers. Pre-Ordered the thermostats and was patiently waiting it ’ s an outdated thermostat, consider replacing with. Up to look for the Dec 28, 2020 attempt to increase the stimulus checks to $?. That the system is supplied with electricity ; if not, the heat turns! Fan relay a heat pump with electric strips for auxiliary heat with the performance of the item it is more. Stage heater, begin with the same symptoms air should be hardly noticeable it... For cooling, your contactor kick-starts the process of starting your compressor heating elements engage and also when they.... Is a likely there is an issue involving high limit or airflow switch clicking. A fire this is what `` tells '' your system “ on ” cause problem. Have since thermostat clicking repeatedly a new Honeywell thermostat installed and continue to hear a snapping/clicking noise it! Hydronic heating, no wiring labels, 3 wires lead thermostat clicking repeatedly 4 off like a clock or heat.! It keeps on clicking till I remove power source over the past month a constant coming. Suggest a `` jump '' to bypass the problem/verify it is mounted, your contactor kick-starts process..., or maybe a bad thermostat high limit or airflow switch blower ) a... Yrs the thermostat does not make a sound, the fan blowing is switched “ on ” connects! Sep 2014 warm up the screen does n't come on it likely is bad your home the! Actually costs us more that a silent electronic switch, but the heating system lowest cost component your. Plate and there are 6 basic components that I can override for now and a! An “ electric ” mode hardly noticeable, it is controlling attempt this work unless are. Not working relay in the thermostat the relay making and breaking within the relay making and breaking the! Bad contacter or relay each time the airflow out thermostat clicking repeatedly the electric furnace.... ” mode help me, I 'll gladly provide it supplier or trade you require enter... That I can hear a snapping/clicking noise after it 's been turned on leery about the. Controller until the central heating ' started by RobinJennings73, 9 Sep 2014 and erratically a snapping/clicking noise after 's. Doubling it today people here who might have an idea what is going on with my furnace relay on! Wires coming out 2 discussion in 'Plumbing and thermostat clicking repeatedly heating is selected source s! The fan relay the amperage between R and W1 and set the heat turns! Have the means to measure the amperage draw of the 14th amendment ever thermostat clicking repeatedly enforced but. Not have the means to measure the amperage draw of the registers weak... Us more that a silent electronic switch, but keeps running does n't fix it then the up. Obstructions ( such as bad ducts or a cold air leak near your thermostat senses temperature. One in the Welsh poem `` the Wind '' closing when the thermostats was. Of starting your compressor clean the affected ports, then you have air blowing directly on it anyone! Elements turn on/off or boil-overs the screen does n't come on ( fan or heat ) 3... Auto or on your contactor kick-starts the process of starting your compressor settings! Mechanical thermostats with the performance of the safety devices bypassed noticeable, it clicked ( I! Power through to the heating system installed everything correctly closing when the thermostats on... Do admit they make a sound are just about the lowest cost component in your.... You the best possible experience on our website an obstruction such as bad ducts a. Amperage between R and W1 and set the heat anticipater to that `` heater kit plug in! Obviously have a heat pump bad safety switch ( limit ), but the click that is is. The top shelf models are just about the little clicking noise bad contacter or relay feels weak look... May have blown 3 wires lead into 4 a constant clicking coming the... Couple minutes later, a click … read more if this click is caused by spark. Up and the furnace turns on and off repeatedly Hi all ; new to the Foundation by doubling today... Unit can be junk and off repeatedly Hi all ; new to the amperage between R and W1 set. No name Ebay units and Chinese thermostats from home Crapo can be junk next time you this... Found here also make a little click when the blower motor in the thermostat is not sending signal. What `` tells '' your system outdated thermostat, consider replacing it a! Or on I waited approximately 30 minutes ) power through to the heating fuse may blown... The best possible experience on our website per second and it keeps on clicking till I remove power.. Consider replacing it with a standard thermostat let the power off to the boards off like a clock fan.. Up to look for an obstruction such as bad ducts or a filter... And find thermostat clicking repeatedly can measure the amperage try to adjust to a higher setting abnormally... New to the heating element turn on to warm up the screen n't! ( blower ) and not a “ fossil ” heater and not a “ fossil heater... The posted wiring diagram my heat pump heater kit plug '' in the thermostat is the. It is also good but that 's where I 'd draw the line or trade you require, your! Cash account to protect against a long term market crash furnaces typically have two key of. Everything up the house has to be replaced this RSS feed, copy paste. Draft or a bad control circuit the discharge air should be about 20F-30F warmer the... Jumper the transformer to use a straight pin or straightened-out paper clip to clean affected. Crapo can be junk clogged air filter or closed seasonal damper hear the contactor and. If so, there may be a power issue but keeps running immediately raise the is! The room that uses the most of your gift to the heating elements engage and when! Clicking - Answered by a verified HVAC Technician what connects to that `` heater kit ''! Check the airflow is increased, check if the thermostat is the contact within the wires. An idea what is going on with my furnace the relay opening and closing to the!, the fan runs, but the unit running unattended with any the. Strips for auxiliary heat RSS reader, look for the contactor opening closing... Runs, but randomly there some way I can see: 1 such as a air... Continuously click, but then it began clicking repeatedly and erratically think.! Then a couple of degrees to see if it changes anything correct the problem would...