Lennox Furnace Blower Motor Not Working

I'd wager a furnace blower motor is not. Blowers come in. the blower fan will not work when I just want fan to come on. Compared to a fixed-speed (PSC) blower motor, a constant torque or variable-speed blower motor will provide everyday savings on your electric bill. Installed new set…still didnt work. This motor has been tested and is in excellent working condition!. The Furnace Makes Loud Noises. Technical Hot and Cold offers the Lennox 58W00 Blower Motor OEM replacement part for sale online and over the phone. - Lennox ML180E Furnace $2795 Any Size Installed! This model comes with new standard high efficiency ECM Blower Motor-Lennox Furnace & A/C combo replacement starting at $5995 Installed (includes furnace, condenser, coil, lineset, and pad. com contact form, and we'll connect you with a leading furnace dealer in your area for help with parts and. Purchased this motor as a direct replacement and worked like a charm. It is only three years old. Information Manual and Section 23, “Maintaining Furnace. If no voltage is recorded, you will have to replace the board or the relay. Lennox review rated 2. Lennox Furnace Service Manuals The Adobe Acrobat Reader Application is. I don't know how much a board is but I would think it wouldn't be much more than $100. The compressor on the roof (also Lennox, seemingly wired in correctly) will run as expected, and proceed to ice up the lines, and the indoor blower relay will make a nice click, but the motor will not start. >Small blower motor with yellow black an orange wire,need to know which is positive neagative an ground > What does the motor nameplate say? Did you google the motor manuf/part#? It's not likely to have a positive, a negative or a ground; rather it likely has common, high-speed, and low-speed conductors with a frame ground. After you've completed all the previous steps, you will need to ascertain if the problem is with the blower motor itself. The furnace lights up, but the blower will not turn on if I have the thermostat in the auto position. When the thermostat calls for heat, the igniter will light the pilot, the gas will come on and light, but the blower does not come on and the furnace will shut off after a few minutes (overheats because of no blower). If the blower motor won't stop running regardless of the actual temperature of the home, there are two possible causes. The latest BCC board is. The Furnace Makes Loud Noises. The same holds true for the air conditioner blower located in the air handler. NOTE: On some models - 1/3 and 1/2 hp blower motors are equipped with either four flexible mounting legs or three flexible legs and one rigid leg. Lennox 602128-02 Blower Assembly. when installing the Lennox Merit Series™ Gas Furnace. A blower pushes the warmth throughout your home. Put in a condensing furnace two years ago and have to say that the difference is night and day. Find the user manual you need for your home appliance products and more at ManualsOnline. This board operates the blower and monitors primary limit and gas valve functions. NOTE: On some models - 1/3 and 1/2 hp blower motors are equipped with either four flexible mounting legs or three flexible legs and one rigid leg. Effective October 1, 2011(1), Lennox will implement a revised PulseTM Key Component Replacement Procedure to replace Lennox PulseTM furnaces when key components, that are unique to the PulseTM furnace, are no longer produced by Lennox or our suppliers. SOURCE: Carrier 58 Series Furnace Blower Motor Won't Shut Off. I have a 1983 Bryant furnace the blower motor don't come on until the flame goes out i checked what i could not known what I'm doing I'm hearing circuit board, flame sensor, thermal couple, all kinds of other things people are saying could be wrong looks like you know what your talking about so I ask what could be causing the blower motor. I tried to see if I am getting amperage on the blower wires and no amperage reading was found. Find the user manual you need for your home appliance products and more at ManualsOnline. In this case it will need to be exchanged for a. How hard is it to replace a blower motor on my lennox furnace? I have a G12D-110-1 Lennox furnace, and I am pretty sure the motor is going out. Fast, same day shipping. Yet, when published efficiency ratings for new furnaces and air conditioners are computed in the laboratory, the efficiency of the blower motor isn't included in the calculation. When the run capacitor on a permanent split capacitor motor for a furnace is not working, the blower fan will not operate. The motor does not need to be returned to. A Variable Speed HVAC Furnace contains a blower motor that is capable of moving at different speeds in order to more precisely control the flow of heated and cooled air throughout your home. Re: Furnace blower comes on before ignition Thanks for the reply, unfortunately the service techs around here are not much more qualified than I am, a little but not much. Q: My outside blower motor will not come on unless I hold blowing cold air furnace A hot surface ignitor works much like the filament in a light bulb. Furnace Does Not Blow Air. The homeowners upgraded their entire HVAC system. I suspect some sort of problem with the furnace blower motor. Despite its complexity, problems with an oil-burning furnace are rare. you can also ohm it out. The blower motor itself seems fine, and runs ok. Two million repair parts for air conditioners, appliances, lawn mowers, furnaces, boilers, and other household genuine appliance parts ship same day. Fast, same day shipping. One needs to ensure that its working conditions are not hampered. The most common reasons for replacing the blower motor Skip - York Furnace Blower Wheel Replacement (Part #S1-02619654709) - Duration: 4:33. Mobile Home Furnace Blower Will Not Come On. Lennox offers a number of different furnaces to meet a variety of needs and budgets. Twice there was a sensor that had to be replaced, and once it was the actual computer module inside the furnace. Check the furnace flame for a complete blue color. 294 (Furnace) There is over current in the furnace inducer motor. Where do I buy a blower motor for my furnace? There are multiple places to where you can purchase a furnace motor blower. This blower motor was removed from a working furnace by a licensed mechanical contractor. Despite its complexity, problems with an oil-burning furnace are rare. >Small blower motor with yellow black an orange wire,need to know which is positive neagative an ground > What does the motor nameplate say? Did you google the motor manuf/part#? It's not likely to have a positive, a negative or a ground; rather it likely has common, high-speed, and low-speed conductors with a frame ground. The only manufacturer that uses its own branded internal parts is Lennox, which is one reason Granados of East Bay Heating and Air doesn't recommend Lennox. Lennox G26 Blower Control Board Failure I'm not familiar what that model furnace, but just because the blower ran with. If you do not have the ability to do these operations safely, do not attempt them. Any ideas what this high pitched loud sound may be? Thanks in advance, Steve Balistreri Wauwatosa Wisconsin. First, make sure that power is getting to the motor. If this occurs, the twinning control will allow system operation to continue, as long as both blowers are operating. First, disconnect fan motor wiring harness connector. Do not overlubricate. I can open it up and give the blower a little spin and it starts up with ease. The pilot and gas burners start, but the fan does not. Clean blower assembly. Furnace blower does not run. Lennox Furnace Blower Motor Not Working If your blower with your furnace is not really doing the job anymore, the furnace blower motor may very well be busted. It is also one of the few only truly modulating gas furnace with a range of firing rate from 40% to 100%. control will sense the blinking furnace LED. Lennox furnace, model no. One of the most common problems with furnace fans is a bad blower relay. The BCC (blower control) is a printed circuit board. when installing the Lennox Merit Series™ Gas Furnace. The average cost to replace a broken furnace blower motor is around $290 when the part is under warranty and you pay just the labor cost. IF the NEST has the capability of staging the gas furnace, then you should be losing minimal by NOT using a Lennox stat. Home appliances Lennox furnace not working pilot light on off, never. Blowr fan won't stop: Forced air heating or cooling air handler troubleshooting: blower fan won't shut off: This article describes what to check if the furnace or forced air blower fan does not stop when you expect it to do so. Lennox 608261-01 Blower Relay Kit. I upgraded my system to another brand, so selling these parts. If your furnace blower fan is squeaking, it's coming from either your fan belt or your blower motor bearings. I don't know how much a board is but I would think it wouldn't be much more than $100. I would also suggest that you make sure the capacitor is good on your furnace's blower motor and that you are getting a minimum of 110 volts to the blower motor when the thermostat is calling for the blower to be ON. His furnace is a different make then mine (not sure if mine is the Lennox or his). Remove control box cover. The blower capacitor seems to be fine with visual inspection. Variable Speed Blower Motor: By having the flexibility to automatically adjust operating speeds this blower motor is able to match output with heating demands of the home. Lennox 602128-02 Blower Assembly. Rattling and Vibration. after the inducer motor starts, you can check the voltage at the 2 wire plug located under the burners. HVAC Recalls is a compilation of CSPC recalls and service alerts from manufacturers. I would also suggest that you make sure the capacitor is good on your furnace's blower motor and that you are getting a minimum of 110 volts to the blower motor when the thermostat is calling for the blower to be ON. Put in a condensing furnace two years ago and have to say that the difference is night and day. Place the blower compartment door back into place and turn the power back on to the furnace. The air conditioning failed and cost me $2,000 to repair it. Ships from and sold by ELECTRIC MOTOR Fasco A202 1/30 HP 3400 RPM Lennox Furnace Exhaust Venter Blower, 115 Volts 5. My home A/C blower motor runs for a few hours, then will not start again after reaching set temperature. An oil-burning furnace is essentially a blowtorch in a fireproof box. Please Help! I have a Lennox Furnace Model G60uhv(X) after years of working fine I switched the thermostat to AC and it failed to start the cooling cycle. Replacing it is an easy fix, as discussed below: HomeTips Pro Tip: Opening up the cabinet of a heat pump and working with electrical parts can be dangerous for the inexperienced. The blower motor itself seems fine, and runs ok. If the blower motor resistors' internal components fail it may cause the blower motor to malfunction, or not function at all on one or more of the settings. When the run capacitor on a permanent split capacitor motor for a furnace is not working, the blower fan will not operate. The blower control could be incorrectly set, or the limit switch on the Lennox Elite Series furnace unit itself isn't set. it does not get hot, and it does not hum, and the squirrrel cage turns freely. We supply the genuine Trane factory part for your Trane or American Standard unit. California Only If installed in South Coast Air Quality Management District (SCAQMD) only: This furnace does not meet the SCAQMD Rule 1111 NO x emission limit (14 ng/J), and thus is subject to a mitigation fee of up to $450. It looks like all that needs replaced is this bracket, and it looks like replacing the bracket would not too be much trouble. If not then the board is bad and not getting power to the heat winding of the blower. I am not sure the model of which Lennox furnace this blower housing for (probably G12, G14, G16 series). Find Lennox Furnace Motor Parts at RepairClinic. Remove the motor. Lennox: Furnace: SPP RBC X-13 Blower Motor Replacement control Modules. So we bought and replaced the control panel as well. Call 800-390-1103 Homeowners Welcome! Technical support available for our customers, get registered today. The Lennox G50UH gas furnace is not currently produced by Lennox; the latest available owner's manual lists the year of production as 2000. You need to do need to comply with instructions and also have plenty of endurance though. The blower will turn on if I turn the thermostat to the fan position. All work guaranteed. So we bought and replaced the control panel as well. If none of the lights is on, this may be due to poor wiring, electricity shutoff, tripped circuit breaker, faulty control board, door lock or transformer. If there is a battery, check if it is working properly. If it's stuck or hard to turn the motor will need to be replaced. If you do not have the ability to do these operations safely, do not attempt them. Original blower motor burned up and wouldn't work, in September in Kansas. Any ideas what this high pitched loud sound may be? Thanks in advance, Steve Balistreri Wauwatosa Wisconsin. Lennox International Inc. after the inducer motor starts, you can check the voltage at the 2 wire plug located under the burners. I have a co-worker who has a Lennox Elite Series gas furnace. It will be difficult to find these old parts. If the blower motor won't stop running regardless of the actual temperature of the home, there are two possible causes. What is a variable speed furnace? The term "variable speed" refers to the furnace's indoor blower motor, which moves at different speeds to precisely control the flow of heated and cooled air throughout your home. The 95% Lennox Elite EL195E, single-stage furnace that costs less than 2-stage models. Furnace Draft Inducer Blower Flue Exhaust Blower After Market Replacements Suggested Replacements for Lennox Furnaces. Re: Furnace blower comes on before ignition Thanks for the reply, unfortunately the service techs around here are not much more qualified than I am, a little but not much. Yet, when published efficiency ratings for new furnaces and air conditioners are computed in the laboratory, the efficiency of the blower motor isn't included in the calculation. If any of these occur, or your furnace is giving you faulty codes relating to the draft inducer blowers, then it may be time to get a replacement motor and blower. 80MGF Series. First, make sure that power is getting to the motor. the board has two sections, 120 and 24 VAC. I also have a 3rd Gen Nest. Blower Motor For Lennox Air Conditioner In case the blower within your furnace is not really functioning any longer, the furnace blower motor could possibly be busted. Permanent Split Capacitor Motor. Original blower motor burned up and wouldn't work, in September in Kansas. But when the blower would typically kick in, it doesn't, and the gas subsequently shuts down. Restricted or closed registers or Retrieve Content. It will be difficult to find these old parts. The BCC (blower control) is a printed circuit board. Purchased this motor as a direct replacement and worked like a charm. - Lennox ML180E Furnace $2795 Any Size Installed! This model comes with new standard high efficiency ECM Blower Motor-Lennox Furnace & A/C combo replacement starting at $5995 Installed (includes furnace, condenser, coil, lineset, and pad. The induction motor begins running. This furnace is not eligible. A worn, wimpy belt isn’t dangerous. Gatineau QC Fasco furnace motors, Jakel and other gas furnace parts near me Goderich ON, Can. In the past 5 years alone it had to be serviced at least 3 times due to not working, of course on the coldest of the Northeast winter days. I would also suggest that you make sure the capacitor is good on your furnace's blower motor and that you are getting a minimum of 110 volts to the blower motor when the thermostat is calling for the blower to be ON. The latest BCC board is. It is good to have this blower housing as a spare. Repair your Lennox Furnace Motor for less. Page 6: General. The latest BCC board is. This fits Specific Lennox G26 High Efficiency Furnace Models. Furnace blower motor hums and won't always start Eventually the hi temp sensor will kick in and turn the gas off. Thank you for visiting our web site. The blower seems to be part of the furnace. The reason a furnace runs is because of the blower motor present in the whole construction. If the blower motor isn't blowing air, the technician will first find and inspect any related fuses. The only time they don't seem to be working is for a few months in the fall and spring when the weather is mild enough to not need heating or air conditioning. Call us at (703) 331-5655. Call 800-390-1103 Homeowners Welcome! Technical support available for our customers, get registered today. This blower motor was removed from a working furnace by a licensed mechanical contractor. Mobile Home Furnace Blower Will Not Come On. Step 5: Check Your Blower Motor if Your Furnace Still Won't Turn On. Furnace Not Working. These blowers & fans are sold as complete assemblies We do not sell any parts for these units Note: Blowers have wire leads, some have plugs, no switches unless otherwise indicated. Browse your favorite brands affordable prices free shipping on many items. Furnace brand should not drastically affect the cost to replace a blower motor because many furnace makes and models—including Carrier and Trane—use the same internal components. My issue is about an air conditioner fan that just won't start. Lennox Fasco 45H3101 45H31 7126-2312 1/3HP Furnace Blower Motor PARTS ONLY. I have a Lennox 80UHG 3/4 Furnace has burn smell and blower motor doesn't start (I have had the blower motor tested and the capacitor tooboth work and the. When troubleshooting, understand you are working with potentially lethal voltages and a highly flammable gas. Blower Motor For Lennox Air Conditioner In case the blower within your furnace is not really functioning any longer, the furnace blower motor could possibly be busted. My particular furnace model is a Trane XR80. My Lennox mid efficiency 16 year old furnace. The fan will work for abit then stop working. Off Delay menu 224, an Inter-Stage Delay. Blower Motor ; The next thing to check is if the blower motor is working or not. Furnace Draft Inducer Blower Flue Exhaust Blower After Market Replacements Suggested Replacements for Lennox Furnaces. If that's not the problem, the blower motor will be removed and tested with an external power source. The blower attempts to come on but the fan is not turning. you can unpug it to check voltage or you can probe the back side of the plug with a volt meter. Not all furnace repair and maintenance issues require the help of a certified technician, but some do, including if your Lennox furnace: Is making noises, including squealing, rattling, and whistling, which are often caused by a mechanical problem; Has cracks in it; Is leaking or has water pooling on the floor around it. com: lennox blower motor. Dirty Burners. com: lennox blower motor. Note: I am not a professional. My 6 year old, Lennox GHR26 furnace decided to quit today. This privacy policy tells you how we use personal information collected at this site. It is difficult to rate the gas furnace since it is not the heating season. The assembly is typically made of metal or plastic, depending on the AFUE percentage of the furnace. From my experience tinkering with motors, the first thing I would do if replacing the start capacitor didn’t fix this is to suspect that current isn’t getting to the starter winding. Make sure the thermostat is set properly to trigger the furnace to initiate and the blower to run. com Playa manual what is blower motor for a carrier 58mca furnace? hammerwall manual mastercut gold mtd mower carrier 58mca/58mxa furnace blower not working suzuki vinson 4x4 carrier furnace circuit boards | national furnace isuzu kb carrier furnace/heater, gas manual - shopyourway. First, turn off all power to the unit and turn off the gas at the gas valve that serves the furnace. Find Lennox Furnace Motor Parts at RepairClinic. I hope you can quickly find and fix the problem. slide blower assembly out of furnace. Most electric motors, including the furnace blower motor, have a reset switch that pops up when this happens. Just remember, if the furnace is not sounding right, it's best to call a qualified technician to inspect your HVAC system to make sure everything is in proper working order. A few weeks ago my furnace developed a vibration that can be heard throughout the house. Furnaces need monthly maintenance and many do-it-yourselfers overlook the blower-fan belt. 4 Blower Motor. Lennox OEM Inducer Furnace Blower Motor Replacement Kit. When the air conditioning was turned on the fan did not blow air, while the. there shoule be a 2 wire plug going to it. The blower in a gas furnace operates all year long to circulate hot air or cold air throughout your home. This means that the blower is not working, or the pressure switch circuit has a short in it. Mobile Home Furnace Blower Will Not Come On. That the blower will operate but will not kick out in the normal control circuit would mean that the thermostat is not sending the signal to the blower to circulate. You can generally tell if your draft inducer blower is not working as the furnace will not be working, or you may also hear a tapping or high pitched whirring sound. I got some tips that it may be the run capacitor or the run cap. Troubleshooting Furnace Blower Not Running. Browse your favorite brands affordable prices free shipping on many items. Carrier Furnace 58mca Parts Manual - Gknaming. Find the user manual you need for your home appliance products and more at ManualsOnline. Homeowners Welcome! Quick to Ship and wholesale pricing. The motor is 5. You are bidding on a Used Lennox Fasco 70581311 99M6301 24W9501 A200 Furnace Draft Inducer Blower Motor. SOURCE: Carrier 58 Series Furnace Blower Motor Won't Shut Off. We attempted to locate one in St. Get the best deal for Furnace Blower Motor In Industrial Hvac Fans & Blowers from the largest online selection at eBay. If that doesn't work, it's certainly a bad blower motor. When the motor is not under warranty, the average cost is around $450 which includes parts and labor for a standard furnace blower motor. Shop our large selection of motor blowers at LennoxPros. When the blower motor relay does begin to fail, the vehicle will usually display a few symptoms that alert the driver of a potential problem that should be serviced. Two million repair parts for air conditioners, appliances, lawn mowers, furnaces, boilers, and other household genuine appliance parts ship same day. If you are not sure of the correct part number contact us with your equipment model number and we will be happy to verify you are getting the correct part for your repair. It is good to have this blower housing as a spare. The main function of a "blower" component in a furnace is to draw heat from the furnace and help your HVAC system maintain the correct temperature throughout your house. Hey All, I inspected a Lennox Pule furnace the other day that has a model and serial number as follows: He will get you in more trouble than you bargained. If the furnace is too large for your application, you probably are not able to move enough air to keep the heat exchanger cool. If any of these occur, or your furnace is giving you faulty codes relating to the draft inducer blowers, then it may be time to get a replacement motor and blower. The blower capacitor seems to be fine with visual inspection. (G20R units will not have a control box cover). The furnace works fine when switched to Heat. If this occurs, the twinning control will allow system operation to continue, as long as both blowers are operating. One common issue with any blower motor in HVAC systems is a bad capacitor. If the blower is making a grinding noise, shut off the unit and call a furnace repair technician; the motor’s bearings are probably shot. Sold by Ami Ventures Inc. A worn, wimpy belt isn’t dangerous. Always perform a cursory look at other components and inputs before condemning the ECM blower motor. If I remove the side panel of the furnace or if I remove the filter, the vibration goes away. Try Prime All 60L21 - Lennox OEM Replacement Furnace Blower Motor 1/3 HP 115 Volt. Lennox 100649-11 Furnace Fan Blower Motor YFK-245-6. If it's stuck or hard to turn the motor will need to be replaced. Most of us don't understand how a furnace blower motor works or what specific needs should be considered when purchasing a new blower motor. Lennox Furnace Types. This board operates the blower and monitors primary limit and gas valve functions. required to measure flame signal if meter used will not 1 − Blower operation is dependent on thermostat control read a low micro amp sig- system. 115V, 3/4 HP, 10A , 1 ph, 1075 RPM. After ruling out all of the 'simple' problems above, the most likely cause of a furnace not blowing air is a problem with the blower fan itself which, if you remember, is the fan that circulates your house's air over the heated coils. Re: Furnace blower comes on before ignition Thanks for the reply, unfortunately the service techs around here are not much more qualified than I am, a little but not much. It will be difficult to find these old parts. Used in Furnace Models: Used on some (not all) Models:. The key is finding the furnace motor reset button to push it back down. A furnace blower not running is cause for furnace repair. The furnace works fine when switched to Heat. 0: my 2 speed motor shorted out ( poor manufacturing- lack of insulation). if you are getting 120v but it is not glowing, it is bad. It is difficult to rate the gas furnace since it is not the heating season. The blower is not working - clicks when turn it on at the thermostat but does not go on. If it's stuck or hard to turn the motor will need to be replaced. Lennox Fasco 45H3101 45H31 7126-2312 1/3HP Furnace Blower Motor PARTS ONLY. These furnaces are for homeowners who wish to. 365 day right part guaranteed return policy. Apply two or three drops of 10-weight nondetergent motor oil (not all-purpose oil) to each port. The only time they don't seem to be working is for a few months in the fall and spring when the weather is mild enough to not need heating or air conditioning. com Playa manual what is blower motor for a carrier 58mca furnace? hammerwall manual mastercut gold mtd mower carrier 58mca/58mxa furnace blower not working suzuki vinson 4x4 carrier furnace circuit boards | national furnace isuzu kb carrier furnace/heater, gas manual - shopyourway. I hope you can quickly find and fix the problem. So we bought and replaced the control panel as well. I have a co-worker who has a Lennox Elite Series gas furnace. Condition is For parts or not working. I upgraded my system to another brand, so selling these parts. Check Your Furnace Blower Fan. The quietest furnace in its class. The item “Lennox 101564-02 5SME39SXL3032 33W1201 33W12 1HP ECM 3. com LII357 1. com: lennox blower motor. Off Delay menu 224, an Inter-Stage Delay. Furnace Stages. The one for the ON position is a different speed. Permanent Split Capacitor Motor. The blower control could be incorrectly set, or the limit switch on the Lennox Elite Series furnace unit itself isn't set. Unfollow furnace blower motor lennox to stop getting updates on your eBay Feed. 53 results for furnace blower motor lennox Save furnace blower motor lennox to get e-mail alerts and updates on your eBay Feed. If your furnace just stopped working, it could indicate an issue with the thermostat. Lennox furnace blower doesn't come on when on "auto" [ 5 Answers ] I have a Lennox furnace model G23Q3/4-100-2. I upgraded my system to another brand, so selling these parts. Place the blower compartment door back into place and turn the power back on to the furnace. The blower motor also begins running, but at low rpm. I have a newer (installed about 2005) Goodman a/c unit connected older Lennox furnace. The homeowners upgraded their entire HVAC system. Lennox G26 As already mentioned, check air filter,and blower wheel. I am not sure the model of which Lennox furnace this blower housing for (probably G12, G14, G16 series). Does this furnace have a stack damper of any kind? It may not be opening properly. OEM Stock on Lennox Blower Motors ready to ship From an Authorized Lennox Dealer. If there is a battery, check if it is working properly. Lennox 28F01 replacement furnace fan blower motor. This can cause the unit not to come on. Pressure switch is damaged; replace blower motor. HE CHARGED HER $300. Once set the motor decides how fast to run to achive the CFM that was programmed. This is pretty unusual. I would also suggest that you make sure the capacitor is good on your furnace's blower motor and that you are getting a minimum of 110 volts to the blower motor when the thermostat is calling for the blower to be ON. 3 amps 115 Volts. then you will now just how much hide the tech is after. If your furnace blower fan is squeaking, it's coming from either your fan belt or your blower motor bearings. Lennox offers a number of different furnaces to meet a variety of needs and budgets. How to troubleshoot a gas furnace. You can also fill out the HVAC. Off Delay menu 224, an Inter-Stage Delay. This feature will not work on furnaces not using this. The blower motor itself seems fine, and runs ok. Furnace and heating parts, motors & ignitors Goodwood ON, Can. Troubleshooting Variable Speed ECM Blower Motors Basics - Variable Speed ECM Blower Motors. If your blower is malfunctioning, getting furnace repair is a top priority. Mobile Home Furnace Blower Will Not Come On. 0 Eon Blower Motor w/o Module View Lennox Part # 10B67 11W55 Lennox 11W55 ECM 2. How does a furnace work in a house? Here are the basic steps: When the temperature in the house drops below the thermostat setting for heat, the thermostat sends two signals: one to the furnace to begin a heating cycle, and another to the blower motor to activate the HVAC fan. This can cause the unit not to come on. The most complete GAS FURNACE TROUBLESHOOTING & REPAIR guide w/easy instructions & videos for all GAS FURNACE TROUBLESHOOTING PROBLEMS & REPAIRS. Wife was not pleased. Lennox review rated 2.