We have a Trane XL80 furnace manual in pdf version that you can download for free. If you have any questions or need assistance, please contact Trane Home Customer Support via email at help@tranehome.com or call 1-877-288-7707, Monday-Friday 9 . However, during the time period while the compressor is not engaged I need to circulate more air on the second floor or it becomes stale. Possibly you could do the same here (turn down blower and gas). I have another question about my new Trane XV95 Furnace. Top Ten Interview Tips to Land that HVAC/R Job! (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). Especially with a high efficiency furnace, however, it may be that the decreased electric bill saves enough to offset the "loss up the flue" not sure. Variable Speed Blower Motor ( Genteq 2.3, 16 pin connector). I Tried a Hands-Free Dog Leash, and I No Longer Dread Walking My Dog, This Simple Trick Can Refresh Your Entire Home, 30 Spring Cleaning Tasks to Add to Your Checklist, Do not Sell or Share My Personal Information. Iappreciate all the comments, questions, and responses that Ireceive from each of you. 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. 4TEE3C10A1 That is excessivly loud. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). The blower motor also begins running, but at low rpm. Air Filter - Be sure to check the air filter and replace if necessary. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The blower/fan seems to be running way to fast. He is committed to outdoor cooking in a Bar-B-Q pit he welded together several years ago. You may freely link But I guess my question is, can the air flow problem really be a simple as upping the blower speed? This value is then multiplied by 150 cfm to obtain the required airflow for the furnace in heating operation. This will help prevent injury and damage to the furnace fan. Stage 3 Aux Heating. My heat is running cold! To start, ECM stands for Electronically Commutated Motor which means that the motor is capable of electronically controlling it's own speed, and therefore CFM, according to the desired output. Yes, there is a way to bring up the speed on the air handler.. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. How to use Slater Type Orbitals as a basis functions in matrix method correctly? I needed to go the opposite direction and increase fan speed. On most control boards there will be a jumper that is marked to show that it controls the speed. This will allow you to access the control board. XB Trane Furnace: Is there a fan speed control on the unit. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Then, carefully switch it to the setting of your choice and push it back into the control board. I want it for the same reason as cliff--the top floor of my house is colder than the main floor and I'd like to even things out by moving more air around. Tied from R to BK in air handler. Only 3 of the 5 colored wires may be used at a time. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. Here's hoping for some good answers. The low pitched whine stops when fan is in high speed. The SW2 indicates the air conditioning size. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. A MERV 16 filters particles at a level near that or a HEPA. Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. I think I had it on my hard drive, and the hard drive crashed on us last winter. No: you will not save on gas/oil costs by running your blower on low. BS in Industrial Technology, If you know what you are doing, it is very simple to adjust the speed of, Before you begin this process it is a good idea to make sure that no power is going to the fan. For this reason, pair your Variable Speed AC unit with one of the following components: Hyperion TAM9 Air Handler, XC 80 Gas Furnace, XC 95M Furnace, or S9V2. The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. I'll just run the heat pump through the leaky ductwork and heat the crawl space. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. Well, it does make sense that lowering the blower speed would reduce its electrical consumption. Certified Welder 01 - Trane Furnace Control Board. According to the company, the slower circulation speed reduces energy consumption by 75%. allows the furnace's circulator blower to operate at a slightly lower speed (85% of desired speed) during a combined thermostat call for cooling and dehumidistat call for dehumidification. Step 4: Take out the inducer motor. Locate the wire for the new speed setting ("medium" or "low"), remove the wire nut from its end and use wire strippers to strip 1/2-inch of insulation from the end of the wire. He is experienced in wood and metal construction, having designed and built several houses and metal buildings. Slowly flashing shows your furnace is on and does not need heat. The A/C will run according to the thermostat settings. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. If there isnt one in your home, turn it off at the breaker box. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. Proper returns are rarely a thought. Realizing this after a very long period of investigation, I eventually turned up the fan speed dial; this seemed to correct the problem initially, until one night a week later lying in bed I heard it do the same thing but but after a much longer run time. Remove both of these wires and wire nut them together. He has been DIY since childhood and is now a septuagenarian. Questions of a Do It Yourself nature should be The arrow should face the direction the air is flowing. When the R-G circuit is made, the blower motor operates on heating speed. Since I first posted this thread, my installer called Trane to get an answer to my original question. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. On the motor, only one of the 5 numbered taps has 24v power at a time based on the speed desired at the control board. If it goes out of spec then on "very cold days" (when the furnace runs a lot) it could trigger an automatic shut off when the exchanger doesn't end up getting cooled enough, FWIW. Presently the settings for the cooling mode is speed 7 (C1.7), heating mode at speed 5 (H1.5), and continuous fan mode is set at the lowest speed (CF.1). How to change the fan motor speed on a gas furnace grayfurnaceman 148K subscribers Subscribe 190K views 10 years ago Furnace blowers A description of how to change motor speeds with a. For business related inquires email us at. I want to increase volume flow if possible. Being an bms/controls guy I rarely have enough cfm in large buildings. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. What actually happened was that it caused the furnace to short cycle, running for about 4.5 minutes then shutting off and immediately turning on again over and over until it reached the set point. If you have not read that yet, I would encourage you to do so! I could imagine possibly fewer "warm up cycles" (which also include having to power on the fan) might save something (as well as lower fan speed=less electricity)but as others have noted, while its running (esp. We welcome your comments and suggestions. Only swap these two wires. how to change fan speed on furnace to get more heat from your unit HVAC STARTUP TECHNICIAN 4.6K views 1 year ago Trane XV80 or XC80 Variable Speed Motor Blower Fan Not Working - $9. Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. He currently has a home shop where he sharpens and rebuilds saws, repairs lawn mowers, mobility scooters, hydraulic jacks, and anything else that comes along. Recently I did a blower speed adjustment on the 2nd floor air. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Any takers? Its not advisable to slow your furnace blower speed. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. The noise is there in heat or AC. Typical setups include these wire colors with associated blower speeds. The system might not work properly. The blower fan on this blower has four speeds. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. ECM Multi-Speed Blower Motor (Genteq X-13). This will cause the "Cool" terminal on the control board to be connected to to the #4 terminal on the motor module via the black wire. Motor is an ECM and it makes a low pitched whine sound when in CIRC or when the blower is ramping up or slowing down to stop. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". So How Do We Adjust Fan Speed? Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. It helps to have over 50 years of farming and ranching experience. (Trust me, the worst thing that happens to me on the job is having inconclusive results due to insufficient data collection during an expensive and time-intensive study.) The ignitor glows. You can change the settings for cfm fan speed, but you have to do it manually at the board. R and BK are tied together. home improvement and repair website. Compatible with Trane systems or any standard HVAC system. The S8X1 blower has 9 speeds. The line voltage and 24v common are connected at the top and are labeled as C, L, G, N. The 24v common is C and the ground wire is G. For a 120v unit, the L is the 120v hot and the N is the 120v neutral. Switched it to heat (in which case the furnace board is in control of the fan, not the stat) - got fire, no fan. Turn off power at the main electric panel. The blower speed for a gas heater is selected so that it is comfortable for the building occupant but also so that the Delta T (Temp Rise) does not continue to rise. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? . How to change blower speed on furnace - Trane XB 2018 Ryan W 794 subscribers Subscribe 185 44K views 4 years ago A quick description on how to change the blower speed on your furnace. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. Yes: you will save electricity costs by running your blower on low. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Trane is a top rated US company of HVAC systems that offer quality and reliability. Change the speed. Heating, Cooling, Air Conditioning, Ventilation and T-Stat Controls, 3-Speed, 4-Wire Ceiling Fan Switch Wiring. Connect the common wire to the neutral terminal of the furnace's control board. #3. The airflow adjustments on this board are pictured below. Locate your thermostat on the page and click System Mode. Adjusting the Airflow Speed on ECM Blower Fan Motors! All rights reserved. Variable speed furnaces only operate at . You need to follow the wiring diagram inside the HVAC unit. The blower is set for 400 cfm for a 4 ton outdoor unit, and comfort-R is not enabled (all factory). It was working a week ago but just recently when it runs it blows out cold air. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. To understand how this works, lets look at the wiring on your furnaces blower. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! bean. (Although it wouldn't hurt to record those too.) When you purchase through links on our site, we may earn commissions at no cost to you. Thanks for all your continued support! This trick only works on gas furnace systems with a multi-speed blower. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). For business related inquires email us at info@acservicetech.com. If the instructions are not with the furnace, you can look up the model number of the unit and search for the installation manual via a google search. I understand the reason for slowing the air to remove humidity. Can airtags be tracked from an iMac desktop, with no iPhone? Most of these are on the bottom left of the control board. These blower motor versions can be found in furnaces, air handlers, and packaged units. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. If you want to learn about refrigerants and how they work in a system, check out our Refrigerant Charging and Service Procedures for Air Conditioning book . That will give you the most reliable results for your particular system. Proper duct sizing can resolve the issue you are having. Many gas-fired, high-efficiency furnaces also save on the electricity required to power the blower motor, though this savings is not factored into the AFUE rating. If you are having problems, find your fans users manual and use it as a guide. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. These are not switched off but are live all the time. Connect with our Customer Care team about your products, warranties, and dealer concerns. Not every AC or furnace filter will have an arrow printed on the frame, but when it does the arrow indicates the direction the filter must face. If the blower motor is burned out, replace it. Access the control board. This will increase the number. If you need assistance determining the best filter for your unit, a Trane employee would be happy to assist you. low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. Follow us on Facebook for Quick Tips and Updates here! Step 3. I'd like to get some second opinions. How to Convert a Furnace Blower Fan Into a Stand Alone Fan, What to Do When a Furnace Blower Fan Won't Start, How to Replace the Resistor on Air Conditioner Blower Fans. Related: a two stage furnace works by actually shooting less gas out, which might improve its efficiency. Running your furnace fan all the time isn't exactly a bad thing. you will get the better dehumidification with the lower setting. In this case, to adjust the blower speeds, move the dip switches (in the red section of the control board) to the positions shown in the manufacturer's installation instructions. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. It accounts for the amount of air in circulation for precision airflow. What sort of strategies would a medieval military use against a fantasy giant? A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. We also have quick reference cards for use out in the field! I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? Connect the black wire to the manometer. Narrowing that hysteresis loop will: Leading to a smaller Hysteresis loop, increasing motor efficiency by reducing iron eddy current losses. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Why is my furnace blower running at low speed? and as I recall, you have the HW VP IAQ stat. In a gas furnace, (the most common type of furnace used in homes) natural gas is ignited in the burner and the flames heat up the heat exchanger. In my searching I have found out that there is a stupid little thermistor that burns out on the motor circuit board (it's a variable speed blower), and replacing it is a permanent fix.. During the awake hours I Hold the fan speed at either low or medium. This means that any time cooling is called for by the control board, 24v will be present on the #4 terminal of the motor module to turn the motor on and to run at roughly 1200 CFM. If 1600 CFM is too high of an airflow volume and only 1200 CFM is needed because the system is a 36,000 BTU/HR air conditioner, we can swap the yellow with the black wire on the motor module. A continuous green light means the IFC circuit board needs replacing. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. We are no longer supporting IE (Internet Explorer). A description of how to change motor speeds with a multiple speed fan motor on an IFC controlled furnace.This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. I do know that my entire furnace runs safely on a 15amp breaker with the blower on high, the burner running, the humidifier running, and the water pump to empty the humidifier running. (Variable & Multi-Speed Types) In this HVAC training article, we will be discussing how to adjust the fan speeds on an indoor ECM variable speed blower motor and an ECM constant torque/multi-speed blower motor. A 1.5 ton AC unit may not be large enough to cool the . Each is associated with a different blower speed. Invention prototypes are another of his many accomplishments. Anyone? Note: (High voltage is always going to your blower motor along with the common for the 24 volts. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. Identify the blower fan and the speed wires. -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. Where To Find R-22 & R410A Leaks on AC Units! Various advertisements for variable speed high efficiency furnaces call them "more energy efficiency" (note also the difference between a variable speed blower and a high efficiency furnace, they're separate, for instance you can have a variable speed blower on a low efficiency furnace). I want to do what is best. Step 3: Find the furnace draft inducer. Here's what to record, in order of importance: The last two (5 and 6) aren't as important, but more data is always better. Wires from the 16 pin plug are connected to this board. STEP-BY-STEP REPLACEMENT GUIDE Turn off air conditioning / heat from the thermostat. Does a summoned creature play immediately after being summoned by a ready action? Oil Furnaces may have a temp rise of 50-60F. This is done so that the maximum amount of heat is gained in the building from the refrigerant. Upon initial installation, these dip switches need to be adjusted for the particular unit, size, and application. You have to switch the wires to the blower motor. suggestions. That said the contractor has no real incentive to get it right. However, if your HVAC blower motor isn't too badly damaged, the technician may be able to clean and repair it so you won't have to incur the cost of a replacement. Its a common occurrence in the heat of the summer or the cold of the winter one room doesnt get as warm or as cool as the others. Browse other questions tagged, 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. Mine has a wall switch. This lower blower speed enhances 1 to 1.5 hours | Install the new motor, adjust it (multispeed and variable speed blowers only), run and test the furnace Installing a blower wheel with the motor shouldn't affect installation time, since the old wheel typically has to be removed to replace the motor. ASE Certified Master Auto Technician Other than removing the module and seeing burnt components it must be diagnosed by a professional with a techmate tool ( allows you to test the motor and module and determine cause of error). If the furnace manufacturer supplies different burners for that unit you may be risking premature failure. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. With heating oil at $4.50/gal I can assure you without measuring anything that running my blower on low is NOT more efficient from a $$ perspective. Therefore for anybody thinking to adjust their blower speed to a low setting be mindful and use caution and listen carefully as to how the system is running. One of these wires will be coming from the thermostat and the other will go to the outside unit. I've gone through the process of adjusting the manual zone louvres on the main ducts (and on registers) and checked them with my camera for blockages. I.e., maybe more heat is now escaping through the exhaust. Now that would turn the blower speed down on you. The automatic feature rarely kicks in once at set point. Put the air handler back. A slim, removable cover will reveal the filter location. Remove the air handler. This is an old thread but I am going to post my experience: I have an oil furnace, at some point someone (a furnace tech) adjusted the blower to run slower thinking it would provide more hot air by slowing the air to heat up more before supplying the house. So if you are actually moving 1250 CFM then you are at 357 CFM/ton, which is a good setup for dehumidifying. In humid climates, 350 CFM per ton can be selected in order to remove more moisture from the air. The remaining colored wires are the speed selectors for this blower motor.). For 240v units, both the L and N are hots. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. Be sure to check out our previous article on ", If you want to learn about refrigerants and how they work in a system, check out our. You will also see the red E icon under Emergency . Locate the speed wires. I have a Trane XV90 propane furnace with a variable speed blower. The question is would the trade-off be in favor of less blower energy consumption and more loss through exhaust, or more blower energy consumption and less loss through exhaust. one room doesnt get as warm or as cool as the others. A lower fan speed ensures your heat pump will run for longer periods of time which is required for the system to go into what's called a defrost mode ( watch this video on defrost) Running the fan too high can mean your heat pump will not run long enough in order to kick into a defrost cycle. Cut the wire's terminal connector off with wire cutters. The fan speed is very low when not heating/cooling. For example, on a package unit, only taps 3, 4 and 5 may be programmed. They have a built in or attached capacitor that will allow the motor to turn on, turn off and run at a constant speed when running.
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