They do this by coupling a sophisticated, programmable thermostat to a variable-speed motor. How do I check if this furnace switch the blower to second speed. I'm not in enhanced mode. I.e., maybe more heat is now escaping through the exhaust. 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. Has anyone done this and can anyone give me a reason why I shouldn't do this? 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. All information is provided "AS IS." When the system calls for heat and the inducer fan begins to run, check each pressure switch terminal. 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. Trane XR80 Troubleshooting After examining the flashing system you should check the green light speed. Yes: you will save electricity costs by running your blower on low. Thoroughly rinse the filter. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? There is no humidistat. Website operating problems contact Webmaster. Stage 3 Aux Heating. Since I first posted this thread, my installer called Trane to get an answer to my original question. On the furnace / air handler board you should have two wires on the "Y2" connection, assuming a two-stage cooling system. Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. Press Apply to save and exit. Proper returns are rarely a thought. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! If the blower motor is burned out, replace it. 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. 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. So How Do We Adjust Fan Speed? Radiant floor heat web sites are mysteriously silent on this simple and cheap modification of pre-exisiting systems to accomplish the same goal. The BTU/HR capacity or tonnage of the air conditioning system should be included within the model number of the outdoor unit. ASE Certified Master Auto Technician 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. (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). I needed to go the opposite direction and increase fan speed. 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. The constant air turn over at a lower set point keeps the house comfortable. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. 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. The blower/fan seems to be running way to fast. 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). According to the company, the slower circulation speed reduces energy consumption by 75%. 80% would be great for me. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. ECM blower motors do not require an external capacitor to operate. Thanks for contributing an answer to Home Improvement Stack Exchange! For business related inquires email us at. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. 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. Iappreciate all the comments, questions, and responses that Ireceive from each of you. The remaining colored wires are the speed selectors for this blower motor.). I think the best bet would be to actually test it for a few months and see. Tied from R to BK in air handler. The airflow adjustments on this board are pictured below. Where To Find R-22 & R410A Leaks on AC Units! Step 4: Take out the inducer motor. I'd like to get some second opinions. Here's the sequence: Furnace gets call for heat. For example, on a package unit, only taps 3, 4 and 5 may be programmed. Which thermostat wires control the furnace fan? Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Again, this can usually be found in the upper-left corner. 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. It only takes a minute to sign up. The arrow should point toward the unit. Website operating @Dave: Those were my thoughts as well. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? XB Trane Furnace: Is there a fan speed control on the unit. bean. 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. DoItYourself.com, founded in 1995, is the leading independent home improvement and repair website. Another common place with a schematic is on the back of the blower fan door. To recap: The service technician might be able to increase (or decrease) the blower speed, but that would probably lower the AC's cooling efficiency. Warmup.com mentions that it was the original design of radiant floor heat systems by the Romans. (Although it wouldn't hurt to record those too.) A second filter location for most HVAC systems and furnaces is the air handler portion of the system. If there isnt one in your home, turn it off at the breaker box. These three are connected to the "Cool", "Heat", and "Fan" terminals on the control board. 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. You will also see the red E icon under Emergency . If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. Changing the fan wire connection between the fan-on relay and the fan motor, selecting a high, medium, or low speed right on the fan motor itself Changing jumper positions on the control board (printed circuit board shown below) in the air handler Changing a dip switch or small slider switch position provided on some air handler control boards I just had a Trane system installed last week and I've been very happy with it! One of these wires will be coming from the thermostat and the other will go to the outside unit. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. Once you have located the panel, remove it. Certified Welder This will help prevent injury and damage to the furnace fan. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Yes--the efficiency of the heat exchanger will decrease. 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. This will allow you to access the control board. I hope this helps you understand how to adjust the airflow speed on ECM Blower Motors! I want to do what is best. Meanwhile, the Circulate setting is a hybrid and auto that keeps the fan running throughout heating cycles and then again for a few minutes every hour even when the furnace is off. 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. 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. I understand that the higher speed is probably for cooling (for which we have a separate duct system and handler), but is it the case that the speed can be switched to a higher fan speed? For instance, here's the procedure to change a furnace's fan speed with a PSC blower motor: Use a multimeter to measure the resistances of each speed wire. Then switch the jumper to your desired speed. On this board, pins 3, 4, and 5 on the SW1/1 through SW1/8 dip switch block have to do with air flow. Western VA. Nov 28, 2009. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. 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. Mine. When the summer air conditioning season transitions to the fall heating season, increase the blower speed by switching the wires on the cool and heat terminals. 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. Therefore I again adjusted the speed upward a bit and that seemingly has corrected the problem. In order to determine or change the speed, check the wiring diagram of the furnace/air handler/package unit that the motor is installed in. 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. Remove battery from the thermostat (or disconnect thermostat altogether). Allow the filter to completely dry before returning it to the device. H.R. 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. The system might not work properly. HVAC filters help remove dust, dander, and harmful particles from the air inside your home. It is about 1300-1400 sq feet, but then the basement was finished at some point, more or less doubling the square footage. The factory may only set two or three of these colors as actual speeds. Cross country truck driver -- over dimensional freight to this site, and use it for non-commercial use subject to our terms of use. I just moved into a house with a Trane XR80 furnace (several years old). . Copyright 4TEE3C10A1 That is excessivly loud. The manual document include instructions and informations on how to troubleshoot the system. (new Image()).src = 'https://capi.connatix.com/tr/si?token=2ba02a33-c319-4410-bba7-f8321a13bed3&cid=877050e7-52c9-4c33-a20b-d8301a08f96d'; cnxps.cmd.push(function () { cnxps({ playerId: "2ba02a33-c319-4410-bba7-f8321a13bed3" }).render("00499ba9282e4d1b985fa8af14d29c2b"); }); On my furnace IFC, the black (high speed) wire is connected to the air conditioning (cool) terminal, and yellow (medium-high speed) is connected to the (heat) terminal. Adjust the fan speed, and if you're still experiencing problems, contact your local American Standard Customer Care dealer. 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. 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. 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. The boiler is feeding a DHW sidearm and furnace plenum HX. Each is associated with a different blower speed. (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.) Only 3 of the 5 colored wires may be used at a time. Air filters should be changed every 90 days unless otherwise indicated on the packaging or by the manufacturer. 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. Thanks for the reply. 01 - Trane Furnace Control Board. The gas is shut off and the induction motor stops running while the blower . *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). Please note that mounting bracket consists of top and bottom brackets joined by 6 metal screws (fig.6.9). Mutually exclusive execution using std::atomic? Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? So the blower motor is dead. I'm not sure exactly the formula I'd use to normalize the results, but I'm pretty confident I could come up with some correlation if I had the data to play with. 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 . These blower motor versions can be found in furnaces, air handlers, and packaged units. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. At night with an . There are also red and brown furnace speed wires. 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. the module must be a trane furnace model specific programmed and is available separate from the motor. Identify the blower fan and the speed wires. This will increase the number. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. Learn more about Stack Overflow the company, and our products. Connect the black wire to the manometer. The only alternative is to raise the discharge temperature. Most require that you open a box (2 screws?) On this motor module, the speed wires are red, orange, blue, yellow, and black. 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. I have a Trane XV90 propane furnace with a variable speed blower. It was working a week ago but just recently when it runs it blows out cold air. 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. Trane s9v2 should thermostat control blower speed? Slowly flashing shows your furnace is on and does not need heat. If you know what you are doing, it is very simple to adjust the speed of your furnace fan. Any takers? Then switch the jumper to your desired speed. If you have not read that yet, I would encourage you to do so! 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. Solution: Install a new sequencer AND a new fan relay, just to be safe. Asking for help, clarification, or responding to other answers. 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. If the control board is at fault, replace it. When it is flashing fast there is heat throughout your home. All rights reserved. You may freely link I miscalculated. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Remember that CFM stands for Cubic Feet Per Minute. I think I had it on my hard drive, and the hard drive crashed on us last winter. Additionally, they can be identified by the presence of a removable module/bell on the end of the motor. 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. Batch split images vertically in half, sequentially numbering the output files, Using indicator constraint with two variables. Wires from the 16 pin plug are connected to this board. Air filters are measured by Minimum Efficiency Reporting Values (MERV). If you want to solve the air noise problem, move the return air filters out of their hallway locations back to the upstream side of the return air duct at the furnace. and our suggestions. If power is getting to the blower motor, but the motor does not run, the motor may be burned out. When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. We recommend our users to update the browser. It allows three constant fan speeds as well as an automatic fan speed and a variable burn rate and compressor and fan speed.

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