how to change fan speed on a trane furnace how to change fan speed on a trane furnace

Typical setups include these wire colors with associated blower speeds. 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. Then switch the jumper to your desired speed. That is incorrect. Certified Welder Locate your thermostat on the page and click System Mode. 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. 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. The real fix is to add insulation and install a second system on the second floor of most recently constructed homes with an adequate number of true ducted returns as opposed to the leaking stud-space returns contractors are so fond of. one room doesnt get as warm or as cool as the others. Click On under Emergency Heat. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed. A slim, removable cover will reveal the filter location. This will show what speed each numbered tap is programmed as. I suppose I probably won't do so it, but out of curiosity what kind of downside might one run into? My gas furnace has two options for the blower speed: MED, and MED-HI. Step 3: Adjust the Pulley on the Blower Drive Motor When the humidity is high for what its set at. 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. maryland_irisman 14 years ago As suggested by the others, you should balance the air flow and the fan cfm should be matched to the system and duct system. The main difference is that the fan ON setting means that the fan is set to run as long as the furnace is switched ON. Your OP was a noise complaint. Anyone? problems contact webmaster@doityourself.com. BarnArtist, locate the wiring schematic on your furnace. Your AC or furnace is designed for a specific type of filter. There is another way to wire this, but I can not find it back.. ECM Multi-Speed Blower Motor (Broad Ocean Type), For an ECM blower motor with wires exiting the module (shown above), the speed is changed at the control board by moving the colored wire terminals. Our Privacy Policy governs the use of your information. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". The factory may only set two or three of these colors as actual speeds. There is a modification that will allow the VS fan to run on high speed at all times while in the AC mode and with the fan "ON" mode. The noise is there in heat or AC. Yes: you will save electricity costs by running your blower on low. (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). The higher the MERV rating, the better the filter is at capturing specific pollutants from the air. I got the sv96 100k btu 2stage furnace with variable fan and the xl18 4ton ac unit. Another key difference is that the circulate . This will help prevent injury and. My heat is running cold! Now that its gotten cold, we've noticed that several of the heat register barely have any air coming out of them. Learn more about Stack Overflow the company, and our products. the module must be a trane furnace model specific programmed and is available separate from the motor. Its not advisable to slow your furnace blower speed. The installation guide clearly describes how to set airflow for heating mode and cooling mode. I'm in the process of re-wiring my blower to run on high with the furnace. This will help prevent injury and damage to the furnace fan. When your AC unit is working properly, the blower inside your furnace or AC will blow cold air.The cold air is sent through ducts to the living areas and then returns air to be cooled by the evaporator coil. Id check that out first. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. Air Filters remove dust, lint, pet dander, and other pollutants so you can breathe easier knowing your indoor air quality is better with Trane. This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. He farmed commercial garden produce for several years. So I continued to play around with different combinations tonight. He has several years experience as a professional cabinet builder, and he is an accomplished auto repairman, having operated an auto repair business for many years. But the 'real' one will be the one connected with a twist on cap to the fan motor. The boiler is feeding a DHW sidearm and furnace plenum HX. #3. He maintains fruit and nut trees along with helping his wife with a vegetable garden. Connect Y2 on thermostat to BK on furnace, and Y2 on the Condensing unit Cut R-BK jumper at Furnace Install R - O jumper at Furnace Connect W2 on thermostat to W2 on furnace (or alternatively, jumper W1 to W2 at furnace and confirm that dip switches are set correctly for Stage Delay if furnace is desired to automatically control heating stages) In other units, it may be 2, 3, and 4 that are programmed. Step 3: Find the furnace draft inducer. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? 10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump. Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. Proper returns are rarely a thought. charts are usually found on the air handler inside door to controls. Since I first posted this thread, my installer called Trane to get an answer to my original question. 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. Here's hoping for some good answers. This will increase the number. One of these wires will be coming from the thermostat and the other will go to the outside unit. 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 do I check if this furnace switch the blower to second speed. This BTU/HR capacity should be used to set the CFM for the indoor blower motor. Top 10 Spots! It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. Typically the colors are: White = neutral speed Red = low speed Yellow = medium speed Black = high speed Your R value shouldn't change, and daily average wind speed and precipitation should have a minimal effect on the convection coefficient. If you have an HVACR relatedquestion, drop it in the comment section of one of theYouTube videos at theAC Service Tech YouTube Channel and I will do my best to respond. The automatic feature rarely kicks in once at set point. By clicking '. I'll edit my answer and include the exact parameters I'd record every day for a thorough study. You may freely link to this site, and use it for non-commercial use subject to our terms of use. Stage 2 Aux Heating. Continue reading to learn how to lower the fan speed. Where To Find R-22 & R410A Leaks on AC Units! The wires are several different colors. Thanks for all your continued support! Does a summoned creature play immediately after being summoned by a ready action? Connect the ohm meter to the pressure switch. Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Using a hammer, lightly tap out the blower motor shaft (fig.6.7) to loosen the blower motor from the fan shroud (fig.6.8). That said the contractor has no real incentive to get it right. Here are how my dip switches are set: Did the installer tie in a humidistat there on that V/S blower . 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. 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 . (Although it wouldn't hurt to record those too.) The best answers are voted up and rise to the top, Not the answer you're looking for? There is no mechanism to change this. Can a furnace with a variable speed blower be used in a multistory house? There is no humidistat. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. Copyright 1995-document.write(new Date().getFullYear()) MH Sub I, LLC dba Internet Brands. You can change the settings for cfm fan speed, but you have to do it manually at the board. Mine has a wall switch. DoItYourself.com, founded in 1995, is the leading independent bean. The ignitor glows. The heat exchanger warms up the incoming air and a blower or air handler sends the warm air throughout the home. In terms of heat pumps, running the external blower faster may reduce i2r copper losses and hysteresis iron eddy current losses. You will need to find the main cover panel on your fan. By Pressing submit, I consent that my information be shared with Trane approved affiliates and third party partners, including connecting me with a local Trane dealer to be contacted about products and services. Its time to clear the air. and as I recall, you have the HW VP IAQ stat. Select your preferred wire with the warm temperature and connect it to the 'heat' port. Cut the wire's terminal connector off with wire cutters. It can happen for lots of reasons, from improper furnace sizing and dirty filters to air duct insulation failures to the room being farthest from the furnace. Asking for help, clarification, or responding to other answers. For business related inquires email us at. It wasn't the noise that was bothering me, it was the desert-like sensation of swirling dry air. The blower/fan seems to be running way to fast. lower efficiency furnace) it is drafting exhaust up the flue which can't be good. You will also see the red E icon under Emergency . Yes you can change it, how to do it is in the manual, yes there can be downsides, no it probably won't fix your air balancing issues. 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. 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. Standard blower motors operate at a single speed and cost around $450 to replace, including parts and labor, while variable-speed motors cost $600 and up. The blower motor also begins running, but at low rpm. If the control board is at fault, replace it. But I'm reasonably sure it uses less to run on high vs low then it uses to run on low vs OFF. Match the positions to the desired pictures within the manufacturer's installation literature. Measured the temperature of the air before the coil and after the coil and used DeltaT (change in temperature) to determine the blower setting. I miscalculated. There are several tutorials on Youtube about how to do this step for specific inducer motor brands. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. In order for the filter to work properly, the right size is crucial. Here are common Trane AC repairs not listed in the guide and their repair cost for parts and labor: Leaking coil and refrigerant: $1,150-$1,750 Thermostatic expansion valve (TXV): $275-$450 Compressor and refrigerant (after ten years, typically): $1,150-$1,600 Failed solder connection on refrigerant lines and refrigerant: $875-$1,220 This lower blower speed enhances Allow the filter to completely dry before returning it to the device. He has been DIY since childhood and is now a septuagenarian. On most control boards there will be a jumper that is marked to show that it controls the speed. Now, I haven't done the measurement to learn how much electricity my blower uses on low vs high. When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. 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. I want to do what is best. ASE Certified Master Auto Technician Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. Shay Tilander is a senior editor at Family Handyman. I've already had a few HVAC vendors give me some specious arguments about moisture buildup, another even told me he'd "lose his license" if he touched the job. There are only a few steps required for most units and having the control will allow you to get your unit to give you the service you need. Recently I did a blower speed adjustment on the 2nd floor air handler and thought to show how it can be done. Air Conditioner + Furnace Matched Systems, Air Conditioner + Air Handler Matched Systems, Does Your Air Conditioner Smell? The video will also explain other safety measures, as well as some for a demonstration which I will show. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! Use tab to navigate through the menu items. I am currently heavily invested in studying and learning the subject as I commit myself to reducing my winter energy costs this year. Turn off the emergency HVAC shutoff switch Remove top and bottom cover panels on the air handler / furnace unit (fig.5.1). With a one-gallon-per-hour burner nozzle that saves me AT-LEAST 30% on fuel oil plus another 20-30 min of blower run time or at least 30-50% run time savings. After understanding what speed each tap is programmed for, we can make proper airflow adjustments. Follow us on Facebook for Quick Tips and Updates here! Well, it does make sense that lowering the blower speed would reduce its electrical consumption. Identify those arcade games from a 1983 Brazilian music video. A properly fitted filter can also trap unwanted, and oftentimes unseen, pollutants from the air in your home, including: Start with the return vent. There are often five wire colors coming from your blower to your IFC. air flow is inadequate to match demand and duct size. Thanks for contributing an answer to Home Improvement Stack Exchange! Website operating problems contact Webmaster. Note: (High voltage is always going to your blower motor along with the common for the 24 volts. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. How exactly could I test this? So clearly, running your furnace blower on low is only more efficient IF-and-ONLY-IF the cost of the heating fuel is much much less then the cost of the electricity to run the blower that little bit faster. The arrow should face the direction the air is flowing. 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. Once you have located the panel, remove it. I'm also a little concerned that this furnace might be a little undersized for our house (if I understand correctly, its a 100 BTU unit). It helps to have over 50 years of farming and ranching experience. - Answered by a verified HVAC Technician . Since hot air is much lighter . It accounts for the amount of air in circulation for precision airflow. The variable speed furnace delivers the proper amount of airflow based on the heating and cooling needs of your home. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. PSC - The Permanent Split Capacitor Motor is still the most commonly used. Electric Furnace Sequencer Replacement Instructions for Home Repair Blower fan will not run: A failing sequencer may have a burnt contact and is unable to switch the fan and heating coils ON. H.R. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). thanks in advance. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. Does that have any impact on the efficiency of the unit? Remove battery from the thermostat (or disconnect thermostat altogether). Black: High; Yellow: Medium-high ; Blue or brown: Medium-low; Red: Low; Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. Running your furnace fan all the time isn't exactly a bad thing. Why do many companies reject expired SSL certificates as bugs in bug bounties? When the R-G circuit is made, the blower motor operates on heating speed. In his particular case it was "too much volume" of air so I presume just moving air filters isn't enough (typically you'd need to adjust blower level AFAICT). You will need to look at what the programmed speed designations are for M1/M2/M3/M4/M5 on the wiring diagram of the HVAC unit. I thought of a way to prevent the nasty smell been coming through the vents, keep the cockroaches and rats out, and heat the house without having to go down and repair the ductwork, all at the same time: seal up the foundation vents with insulation and replace the thermostat with a remote bulb thermostat locating the sensor under the house. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. Can airtags be tracked from an iMac desktop, with no iPhone? Unlike a conventional systemwhere the furnace goes on, blows hot air into the house at full force for a few minutes, and then shuts offa variable-speed or variable-capacity system runs the blower for longer periods at lower speeds. The house has a 3 ton trane xl20i and an xv80 (4 ton max). Then, carefully switch it to the setting of your choice and push it back into the control board. During the awake hours I Hold the fan speed at either low or medium. I think the best bet would be to actually test it for a few months and see. Turn off the power source that is connected to the furnace blower. So the blower motor is dead. In fact, there's no need to worry about the fan wearing out or breaking down because it's designed to run continuously, and there's an array of benefits connected to this. You may freely link -The "AC/HP CFM Adjust" is the airflow volume to be set for system, efficiency, comfort. You have to switch the wires to the blower motor. Which thermostat wires control the furnace fan? 80% would be great for me. Filters help protect the many parts of your heating and cooling unit from debris and buildup that can shorten the working life of the system. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. At night with an even lower set point I switch the fan speed to automatic. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. Most of these are on the bottom left of the control board. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. Most homes have a standard split-system air conditioning unit with two main fans. My main questions are. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. The most important factor is temperature differential - the difference between the inside temperature and outside temperature. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. I have another question about my new Trane XV95 Furnace. My question was whether the efficiency of heat transfer thru the exchanger would be somewhat compromised due to the reduced airflow. For 240v units, both the L and N are hots. These two losses comprise the magnitude of heat losses. I would think adjusting the heating element would save more energy than reducing the blower's electric consumption, but I didn't do a study on it myself. When it is flashing fast there is heat throughout your home. Click System Options. The airflow adjustments on this board are pictured below. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). I want to increase volume flow if possible. We have been heating the crawl space in our house for several winters because the ductwork was all torn up from rats. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. I understand the reason for slowing the air to remove humidity. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. To adjust the dip switches, turn the power off and take a flat head screw driver to lightly push the dip switches to the on/off desired position for each numbered switch. They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. If you do, you may not have enough air flow over the heat exchanger, resulting in overheating and eventually a shorter exchanger life span. First, make sure that power is getting to the motor. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. A MERV rating speaks to the filters ability to capture large particles. To learn more, see our tips on writing great answers. 3 of the wires will likely terminate with just a twist on cap. 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. The MERV scale rates filters from 1 to 16. This furnace features the common White-Rodgers Intell-Ignition circuit board. I have a Trane XV90 propane furnace with a variable speed blower. Access the control board. Home House & Components Systems Heating & Cooling System Air Conditioners. I think I had it on my hard drive, and the hard drive crashed on us last winter. You should now see a red E icon in the System Mode screen next to Auto and Heating modes. Yes, there is a way to bring up the speed on the air handler.. It shouldn't take more than a few minutes a day to record the data anyway. On this motor module, the speed wires are red, orange, blue, yellow, and black. If a clear distinction between the blower speeds isn't obvious in the data, then you're probably not going to save much money either way, so go with what's most comfortable for you. 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. In this video, we are changing the blower speed on a Trane XR 95 furnace so that the forced air furnace circulates more air on heat mode. That will give you the most reliable results for your particular system. -The "AUX Heat" makes sure that there is enough airflow when elect strip heat is called. Test your knowledge with our 1,000 question workbook along with the answer key! ECM blower motors do not require an external capacitor to operate. Because the slower air velocity over the heat element is transferring fewer BTU units into the circulated air and they simply go up the exhaust pipe. You need to find the wires that determine blower speed inside your furnace. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. In support of this: I found the mfr owner's manual for my furnace and in it, it states, "if you have an air-conditioning coil installed, you should switch the furnace blower speed to high to accommodate the decreased air-flow caused by the cooling coil in the plenum.". Select Climate from the blue menu on the left side of the page. Remove both of these wires and wire nut them together. Identify the blower fan and the speed wires. Published: 05/19/2021 Author: Craig Migliaccio, About the Author: Craig is the owner of AC Service Tech LLC and the Author of the book Refrigerant Charging and Service Procedures for Air Conditioning. A 90 percent-plus furnace needs 150 cfm per 10,000 Btu of input. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. Step 3. This trick only works on gas furnace systems with a multi-speed blower. The air handler houses the fan and fan motor and is usually located in the basement or attic. If you remove the common and place it on another terminal, it can burn out your motor not how you want the new furnace season to begin. Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. I recently had have a trane xl 90 want to adjust speed of blower fan blower motor has 4 wires white going to neutral black unhooked blue to high speed yellow to I have a Trane Indoor Air Handler Model No. Move the high-speed wire to low. 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. When one of the taps is powered with 24v, the motor will turn on and run at the selected speed. I simply am unable to put my hands on the schematic. The SW2 indicates the air conditioning size. In the example of an ECM 3.0 with a 4 pin connector, the wires are not switched or moved to adjust the airflow settings. and our 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. The hot air will rise and heat the floor from beneath, a DIY form of radiant floor heating. Western VA. Nov 28, 2009. Most require that you open a box (2 screws?) Should I upgrade to a pcm br compatible thermostat? If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. A second filter location for most HVAC systems and furnaces is the air handler portion of the system. I just had a Trane system installed last week and I've been very happy with it! Based on some randomly googled comments here: http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998& seems to agree it decreases efficiency but may increase comfort [ex: cold spots or noise level] :). Know your limits. All rights reserved. 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. suggestions. (Without enclosing my house in a climate-controlled bubble). low would be 350 CFMs/ton, medium 400 CFMs/ton, high 450 CFMs/ton. Test the new speed. video below! Only 3 of the 5 colored wires may be used at a time. 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.. *NOTE* If you attempt this, be absolutely sure that you have no power going to your system, especially before changing wires. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. Roughly 400 CFM is needed for every 1 ton (12,000 BTU/HR) of Heat Removal Capacity in Air Conditioning Systems. 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. 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. 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