Switch the Jumper On most control boards there will be a jumper that is marked to show that it controls the speed. Dave. The airflow adjustments on this board are pictured below. Most homes have a standard split-system air conditioning unit with two main fans. 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 this motor module, the speed wires are red, orange, blue, yellow, and black. 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. Top Ten Interview Tips to Land that HVAC/R Job! Step 4: Take out the inducer motor. The air handler houses the fan and fan motor and is usually located in the basement or attic. Air Filter - Be sure to check the air filter and replace if necessary. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Click On under Emergency Heat. For example, on a package unit, only taps 3, 4 and 5 may be programmed. Adjusting the Airflow Speed on ECM Blower Fan Motors! bean. The wires that are used will determine the speed settings that the motor will run at. My first thought was that the unit was oversized, but I figured out how to check the DIP switch settings. Air filters are typically found behind the return vent door, often located in the ceiling or wall in the central portion of your home. When you open the panel, it kills the power to the furnace. Use dish soap and a soft-bristle brush or sponge to remove stuck-on debris. To clean a reusable filter, remove the filter from the air cleaning device. To switch the jumper, you will need to hold onto it gently as you pull it out of its current setting. I know that it has been done. However, I like the continually run the fan to even out air temperature in the house. - Answered by a verified HVAC Technician . This control board is out of a variable speed furnace with a modulating gas valve that has a variable speed inducer motor. One thing I found consistently was that making changes on the RS-485 hydro heat control board and W1-W3 jumpering had notable effects (more CFM's at my test register) while messing with the mainboard DIP switches had little to no effect. Slowing the blower speed reduced the noise but I take it you would still like it to be more silent. 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. The house has a 3 ton trane xl20i and an xv80 (4 ton max). The gas kicks on and is lit by the ignitor. By clicking '. This lower blower speed enhances In the example above, an ECM 2.3 16 pin variable speed motor is connected to an air handler control board. These connected to (park) terminals, which are not used and simply hold those two additional wire speeds. Choose the Trane owner guide thats specific to your unit for detailed instructions on locating and changing yourairfilter. Most furnaces have a relay switch on the door cover. (Heat transfer wasn't one of my favorite classes in college - I focused more on dynamic systems, sorry.). If you have not read that yet, I would encourage you to do so! I guess you are talking about a 3 speed direct drive motor with 1/2 shaft. 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 . Compatible with Trane systems or any standard HVAC system. 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). 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). This will increase the number. Typical setups include these wire colors with associated blower speeds. Heres What It Means, Why You Should Monitor the Humidity Levels In Your Home. Note also that there is always just "one blower" but that blower may or may not be variable speed, etc. Stage 3 Aux Heating. Mine has a wall switch. 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. It helps to have over 50 years of farming and ranching experience. 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. Cut the wire's terminal connector off with wire cutters. I know I need to replace a dying blower motor in a 1992 Trane XL80 gas furnace. Check out www.acservicetech.com/store. - The "Continuous Fan" refers to when the G terminal is powered for the fan only to run. The induction motor begins running. *Based on third party testing of particle removal efficiency down to 0.3 microns (2005). 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. 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. In order for the filter to work properly, the right size is crucial. Reddit and its partners use cookies and similar technologies to provide you with a better experience. The house cools off quick - too quick - and feels humid (not sure of the rh%). the module must be a trane furnace model specific programmed and is available separate from the motor. 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 . 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. The fan speed is very low when not heating/cooling. The MERV scale rates filters from 1 to 16. Options are, for example, 4 minutes at 80%, or 30 seconds at 50%. ECM blower motors do not require an external capacitor to operate. The installation guide clearly describes how to set airflow for heating mode and cooling mode. When changing the AC or furnace filter, the arrow should face the furnace and point away from the return duct. When it is flashing fast there is heat throughout your home. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? For homeowners who want to upgrade rather than replace an existing furnace, Emerson Electric offers an exclusive replacement blower motor called the Mark Z that can be set by the homeowner on a continuous, slower-than-normal speed. 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) 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. If the pressure switch is functioning properly . http://www.inspectorsjournal.com/Forum/topic.asp?TOPIC_ID=8998&, We've added a "Necessary cookies only" option to the cookie consent popup. Here are some of them: Better circulation of heated and cooled air. I simply am unable to put my hands on the schematic. Comfort R should be off if you are using . I was reading the Trane XL824 thermostat installation and setup manual. The same is true when changing the air duct filter. 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. I'd like to get some second opinions. The constant torque/multispeed motor will have the smallest module. When the R-G circuit is made, the blower motor operates on heating speed. 4TEE3C10A1 That is excessivly loud. Cross country truck driver -- over dimensional freight 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. Make sure power is off when doing any adjustment. Each is associated with a different blower speed. video below! Craig is a licensed Teacher of HVACR, Sheet Metal, and Building Maintenance in the State of New Jersey of the USA. 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.. Questions of a Do It Yourself nature should be submitted to our "DoItYourself.com Community Forums". 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. Bundle Packs are a great way to save and get faster shipping! Trane. R and BK are tied together. 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. The gas is shut off and the induction motor stops running while the blower . I think I had it on my hard drive, and the hard drive crashed on us last winter. In the pictured example above, if the #5 speed tap is programmed for 1600 CFM and #4 is programmed for 1200 CFM and #5 is presently connected to the "Cool" terminal on the control board via the black wire, we know that the unit is running at around 1600 CFM as long as the TESP across the unit is not too high. Proper duct sizing can resolve the issue you are having. The problem is, the furnace control module doesn't use a separate speed when the unit is running in continuous FAN mode. There is another way to wire this, but I can not find it back.. Are there downsides to this. Pollen, dust, clothing and carpet fibers, hair spray, mold spores, Pollen, dust, clothing and carpet fibers, hair, mold spores, legionella, pet dander, Pollen, dust, clothing and carpet fibers, hair spray, mold spores, bacteria, pet dander, cooking oil, most tobacco smoke, smog, Air filters are the first defense against the pollutants in your air, but building a complete air filtration system can help support an even higher quality of indoor air. Sometimes less cmf will give the air more time in the heat exchanger thus letting it get hotter. The blower energy draw at a lower speed will be offset by the loss in fan wheel inertia. 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. 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. To help ensure you're breathing healthier air and supporting your heating and cooling system to operate at an optimal level, follow the simple steps in this video to change your furnace filter assuggested. In order to measure air flow you could use a flow capture hood, a rotating vane anemometer, or a hot wire anemometer. 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 (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. That said the contractor has no real incentive to get it right. ago. The SW2 indicates the air conditioning size. Variable speed furnaces only operate at . Typical setups include these wire colors with associated blower speeds. Ilook forward to responding to many more! Thanks for the reply. You may freely link To understand how this works, let's look at the wiring on your furnace's blower. 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. If you have suggestions or comments they are welcome. It was working a week ago but just recently when it runs it blows out cold air. We recommend our users to update the browser. ECM Multi-Speed Blower Motor (Genteq X-13). 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] :). So the blower motor is dead. By regularly changing your filter, you can improve your indoor air quality and extend the life of your heating and cooling system. These blower motor speeds are programmed at the manufacturer's factory for the specific equipment model number unit it is installed in. The MERV rating is typically printed on the filter packaging, but not necessarily on the filter itself. Remember that CFM stands for Cubic Feet Per Minute. It offers three settings: 525 RPM for saving energy, 900 RPM for heating, or 1100 RPM for air conditioning. For 240v units, both the L and N are hots. She has experience researching and creating a wide range of home improvement and garden projects, and especially enjoys learning about fireplaces and exterior design. No problem with the boiler. Your new AC unit is not collecting water (yet) because the anticondensation coating hasn't been compromised (yet); and that's a good thing. The automatic feature rarely kicks in once at set point. The installation instructions for this furnace are needed in order to be able to know how to set these dip switches. Step 3: Find the furnace draft inducer. Example: 1200 CFM is needed for a 3 ton 36,000 BTU/HR system. Yes, there is a way to bring up the speed on the air handler.. Wires from the 16 pin plug are connected to this board. I am just clueless, could it be the thermostat (really old) or something that is going to cost a billion dollars to fix? and as I recall, you have the HW VP IAQ stat. The arrow should face the direction the air is flowing. 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. Our Privacy Policy governs the use of your information. Step 3. Use tab to navigate through the menu items. 01 - Trane Furnace Control Board. I can unsubscribe and opt-out from future communications at any time. If the Delta T continues to rise, this is due to low indoor airflow. Continue reading to learn how to lower the fan speed. Then switch the jumper to your desired speed. BarnArtist, locate the wiring schematic on your furnace. I'm not completely convinced on this, since the claim is made by a company that sells variable speed blowers for retrofitting HVAC systems. The blower/fan seems to be running way to fast. 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. Before you begin this process it is a good idea to make sure that no power is going to the fan. How to Lower the Ouptut of Oversized Furnace. Yes--the efficiency of the heat exchanger will decrease. Does that have any impact on the efficiency of the unit? During the awake hours I Hold the fan speed at either low or medium. If your home has multiple HVAC systems, there will likely be at least one air filter for each unit. 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. 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. Your AC or furnace is designed for a specific type of filter. By pressing "submit", I understand that I am providing express consent for Trane Residential to contact me about this request or similar topics. The automatic feature rarely kicks in once at set point. Fortunately, theres a simple fix if you look at your furnaces Integrated Furnace Control (IFC) board. You may freely link to this site, and use it for non-commercial use subject to our terms of use. According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. Stage 2 Aux Heating. A 1.5 ton AC unit may not be large enough to cool the . I needed to go the opposite direction and increase fan speed. If the terminals are present at the motor module (ECM X-13) you can switch speeds at the blower motor location. The system also accounts for blocked vents and dirty furnace filters, and adjusts fan speed as needed to compensate. But I guess my question is, can the air flow problem really be a simple as upping the blower speed? Disconnect between goals and daily tasksIs it me, or the industry? Then switch the jumper to your desired speed. one room doesnt get as warm or as cool as the others. You can verify the actual CFM by measuring the TESP of the system and comparing it to the manufacturer's airflow data sheet. 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. 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. There is no mechanism to change this. Remove the air handler. For business related inquires email us at info@acservicetech.com. I assume you are speaking about dip switch settings. Variable Speed Blower Motor (Genteq ECM 3.0, 4 pin connector). Where To Find R-22 & R410A Leaks on AC Units! When he's not enjoying family time with his wife and three boys, he loves tinkering with projects and geeking out on electronics. The heat exchanger can be overheated and burned out if the blower does not remove enough heat. Connect with our Customer Care team about your products, warranties, and dealer concerns. Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace? At night with an even lower set point I switch the fan speed to automatic. He owned and operated a manufacturing business building Compact Utility Vehicles for homeowner use. The control board is communicating with the blower module in order to determine the airflow volume needed. 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. AC Service Tech HVAC Training is made possible by continued support from our visitors, customers, and support from these Sponsors! Allow the filter to completely dry before returning it to the device. . Match the positions to the desired pictures within the manufacturer's installation literature. You will also see the red E icon under Emergency . (FYI Filter was clean and furnace was recently serviced all prior to my initial investigation of the short cycling). What sort of strategies would a medieval military use against a fantasy giant? suggestions. Available from Trane Dealers in select locations. This will help prevent injury and damage to the furnace fan. 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). To understand how this works, lets look at the wiring on your furnaces blower. It had been set on the higher speed, but that was too harsh, so I lowered it to the slower speed. 3 of the wires will likely terminate with just a twist on cap. 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. Why do many companies reject expired SSL certificates as bugs in bug bounties? Most residential furnaces were installed by the low bidder. Heat exchange takes time. 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. Variable Speed units continuously communicate with each other and your Trane thermostat to provide optimal efficiency. This is a follow-up to our other article on "Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor". No: you will not save on gas/oil costs by running your blower on low. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. All information is provided "AS IS." to this site, and use it for non-commercial use subject to our terms of use. 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. New XV80 Trane furnace makes noise when blower runs at low speed. If the control board is at fault, replace it. 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. Put the air handler back.