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Lennox indoor blower motor problem?
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Lennox indoor blower motor problem?
Notice to Homeowner This furnace is equipped with safety devices that protect you and your property. Here are 4 common symptoms of a bad blower motor: Low/no airflow from vents. 7 m (350 ft) of Leonardian rocks are mainly sandstones, some siltstones, and evaporitic. Check out 5 tips for preventing motor oil deposits at HowStuffWorks. See TEST A and figure 1. 292: Indoor Blower Motor Start Problem: Indoor blower motor unable to start (seized bearing, stuck wheel, etc Replace motor or wheel if assembly does not operate or meet performance. Whether you’re cold or hot, or something simply isn’t working right, you can contact our Kingman location for electrical, HVAC, and plumbing services to keep you comfortable and safe. Customer Reviews: 4 To accurately diagnose and troubleshoot a bad HVAC blower motor, the step-by-step testing process is crucial. Problem may be on system component control or motor side. Inspect the fan blade to ensure to ensure it is clean, unobstructed, and is fully seated on the motor. Thermostat. The model and serial numbers of each of the Lennox company’s furnaces is visible inside the top-front service panel of the furnace. we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems. Considering buying a Lennox AC? Click here to read our Lennox air conditioner review to see if the efficiency, durability, and quality are worth the money. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. If the furnace is making a high-pitched sound it is likely the blower belt or the blower itself. The model and serial numbers of each of the Lennox company’s furnaces is visible inside the top-front service panel of the furnace. Indoor crafts are projects for creative kids when fun under the sun isn't an option. When troubleshooting airflow issues within the system it is important to inspect and check the entire blower housing assembly to determine if the blower ass. Lennox designed and built, direct drive blower. But if your blower motor slows down unusually and makes a humming sound when it has slowed down, it might be due to a fault in the capacitor and the motor. The error 201 signifies the system has lost communication with the indoor blower. Nov 13, 2023 · Lost communication with indoor blower motor. I've mostly been paying attention to alerts received on the thermostat, where I've been getting "critical" alert 292 (Indoor blower motor start problem) about every 3-4 days since 1/1. Mandating real-time monitoring CO2 levels in public spaces and transportation could improve indoor air quality Air It’s invisible. It is a small electric motor that engages the engine when the driver turns the key. Lowest is fan off temp -> Set to 90 - if fan continues to cycle back on, go lower. Allergens are common, but there are ways to keep indoor air pollution under control. With Lennox e201 code there are a few possibilities of what might be wrong. Lennox Indoor Blower Motor Problem 201 Downloaded from devedu by guest CONRAD BEST Tilesetter, 2010 McGraw Hill Professional * Complete Troubleshooting & Repairing guide to hot air furnaces * Complete operation, maintenance, and repair * Covers gas, oil, and electric forced air systems * Includes flowcharts and Products that add to the performance of SL280V Variable-Speed Gas Furnace. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. If you received the 201 error,the thermostat lost communication with indoor blower motor. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. You can't pour it down the drain or into the soil, because the Environmental Pro. Gnats are tiny flying insects that can quickly become a nuisance in your home. A couple days ago, our system quit blowing air. Make sure it's set appropriately for the season. The CBA38MV is the industry's most quiet and efficient air handler, providing reliable comfort, more consistent temperatures, and enhanced humidity control in all types of environments. more Here are the most common reasons your Lennox furnace's blower runs constantly - and the parts & instructions to fix the problem yourself. The air handler was just making a loud humming sound and the fan would not spin. The indoor blower distributes warm air, so you won’t have heat Several things can be wrong, including: A power outage; A brown-out; Motor not receiving power; Loose wiring; Condensation on uncovered system component controls. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. switched the thermostat to a/c and the motor switch to on - blower fired up - worked for a few hours and shut down with fan switch on … To my surprise, blower motor started out perfectly, with no sounds being emitted, no critical error codes in display. Possible causes include: power outage, brown−out, motor not powered, loose wiring, condensation on air handler control board. Oct 19, 2021 · Lennox Error Code 201 usually indicates an issue with the blower motor of the furnace. ASIN : B00FWXO8E4. Call a technician for repairs. * Based on sound pressure levels during steady-state, high-fire operation of Lennox SL280UHV070V36A and leading competitive units at mid-point temperature rise and minimum external static pressure when set up per Section 43 of AHRI 260-2001. Since you say the blower doesn't come on for cool calls, or when the fan switch is moved to the ON position. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. In addition, this unit has the enhanced ca-pability of communicating with communicating thermo-stats and communicat. A parts diagram of the Lennox Pulse 21 can be a valuable tool in this process. G71MPP series units are high−efficiency multi−position. The next most common problem that can occur with an air handler is a failure of a blower motor, whether it be the blower motor or something else that causes the blower motor to fail. The Pontiac Grand Prix has a blower motor that is regulated with a fuse located in the fuse panel inside the glove box. Nov 13, 2023 · Lost communication with indoor blower motor. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. It is a small electric motor that engages the engine when the driver turns the key. If necessary, call an HVAC technician to address the issue. Disabled Hands points us to a great ergonomic tool that just about anyone could benefi. in heating capacities of 44,000 to 132,000 Btuh and cool-. Lennox Indoor Blower Motor Problem Musings of an Energy Nerd Martin Holladay 2016-01-05 In this fascinating collection of postings from his popular “Musings of an Energy Nerd” blog, Green Building Advisor's Martin Holladay cuts through the hype and myths about energy efficiency, sustainability, and green building to present Lennox Replacement Fans and Blower Motors. (upflow, downflow, horizontal right and left) gas furnaces. We make fixing things easier! Dec 4, 2023 · Common causes of a Lennox furnace blower motor failure include: A faulty capacitor. Thinking about purchasing a new AC? Wondering if Lennox is the right brand for you? Check out this guide to see if the Lennox ac unit cost fits your budget. Keeping humidity down helps to keep mold and spores at bay, and helps to cool the home. A couple days ago, our system quit blowing air. A car's starter is one of its more important engine components. A blower motor replacement costs $300 to $900 if not under warranty or $200 to $400 for labor when under warranty. Customer: All we can tell is that the alert message that shows on the IComfort thermostat screen says the code is 201, and the indoor unit is reporting a "problem", not further specified. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. Indoor humidity levels should be kept at 50 percent or lower. Clear Cache, App Data, and Force Stop an App on Insignia TV? [2024] Lennox heat pump is not turning on. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. See TEST A and figure 1. 294: Inducer Motor Over current: Check combustion blower bearings, wiring, amps. Home warranties lower repair costs after the manufacturer’s warranty expires. These pesky creatures can infest your kitchen, bathroom, and even your indoor plants The Kenwood Chef Mixer is a popular and versatile kitchen appliance that has become a staple in many households. If you’re into gardening at. Oct 19, 2021 · Lennox Error Code 201 usually indicates an issue with the blower motor of the furnace. ASIN : B00FWXPCRQ. E295 The indoor blower motor is overheating. At least the unit tells me it's the blower. This motor will require a special test tool called an ecm motor tester to determine if issue is in the actual control module on motor or board Lost communication with indoor blower motor. If you received the 201 error,the thermostat lost communication with indoor blower motor. 8K subscribers Subscribed 805 41K views 3 years ago. Clear Cache, App Data, and Force Stop an App on Insignia TV? [2024] Lennox heat pump is not turning on. 2 - If ohms to ground shows low resistance replace motor. E292 The air handler's blower motor will not start. pipe) venting system. Possible causes include power out. 2 - If ohms to ground shows low resistance replace motor. This can cause the furnace to be noisy during operation. This can cause the furnace to be noisy during operation. ticklish submission These issues are usually caused by such things as power outages or surges which confuses the little computer. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. If you love your stovetop grill pan as much as I do, you know it can be tricky to oil it properly before cooking. Sometimes the furnace may go off within seconds of realizing that the blower motor is not operational. There are some helpful ways to prevent motor oil deposits from becoming a problem. Worn-out motor bearings A malfunctioning control board. Here are the most common reasons your Lennox furnace's blower won't run - and the parts & instructions to fix the problem yourself. 1 - Remove the motor harness from from the blower drive. Replace furnace control board, high efficiency: $600. Hello everyone, I am having an odd problem with my air handler. Approved methods of recovery, recycling or reclaiming must be followed. Lennox Error Code 292 indicates an issue with your blower motor, due to which this is not able to start. Nov 13, 2023 · Lost communication with indoor blower motor. All of the information in this blower motor replacement video is applicable to the following brands: Lennox Tools needed: 1/4 inch socket, 5/16 inch socket, adjustable. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. Values should be compared with those given on unit nameplate. Belt and Blower Problems. The most common reasons for replacing the blower motor are when the furnace is loud or the blower. This can cause the furnace to be noisy during operation. Oct 19, 2021 · Lennox Error Code 201 usually indicates an issue with the blower motor of the furnace. Lennox Error Code 292 indicates an issue with your blower motor, due to which this is not able to start. ts sara salazr Check for seized bearing, stuck wheel, obstruction etc. In some cases, a simple reset can solve minor issues with your Lennox thermostat. There are many reasons that a car's air conditioner can malfunction. Its proprietary enhanced aluminum construction means that it operates reliably, even in the harshest conditions. Lennox blower motor problems Blower motor stopped - seemed the fan limit switch was hung up - cleaned and lubed just a touch - worked for a week or so until this morning. pipe) venting system. Date First Available : October 15, 2013. Check for dirty filter, unit air flow restriction, blower performance. Lennox blower motor problems Blower motor stopped - seemed the fan limit switch was hung up - cleaned and lubed just a touch - worked for a week or so until this morning. 292—indoor blower motor won't start. Sometimes the furnace may go off within seconds of realizing that the blower motor is not operational. HVAC dealers can shop this part online now Constant Torque Blower Motor, 1 Hp, 1250 RPM Variable, 115/208-230 VAC, 48 FR SUMMER15. Manufacturer : AirXHeat. 207—hot surface igniter is open. 4 (49) * Based on sound pressure levels during operation of Lennox's CBA38MV-036 with factory-installed filter compared against 3-ton units of the leading competitors representing the majority of the total air handlers of like class sales volume in North America at equivalent external static pressure when set up per Section 43 of AHRI. Use a multi-meter and verify 24 volts DC is being supplied at the thermostat G (Blower) and C (Common) terminals. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. Indoor crafts are projects for creative kids when fun under the sun isn't an option. 3 - If the circuit is open move to … Here are the most common reasons your Lennox furnace's blower runs constantly - and the parts & instructions to fix the problem yourself. 2 - If ohms to ground shows low resistance replace motor. I determined that the issue was not with the compressor but the actual blower motor. combustion air inducer and variable speed indoor blower All models are designed only for direct vent (dual. Read expert reviews and find the perfect unit for your needs. cats for sale craigslist (left-side) Lennox schematic for the blower, etc. Nov 13, 2023 · Lost communication with indoor blower motor. iComfort SL280UH070V36A furnace pdf manual download Restricted airflow - Indoor blower is setting. If your Lennox furnace is not turning on, it can lead to … Lennox error code 201 refers to a problem with your furnace’s blower motor. If your Lennox furnace is not turning on, it can lead to … Lennox error code 201 refers to a problem with your furnace’s blower motor. If ohm reading is met motor has passed. It just wouldn't blow air. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. With the help of the Lennox S40 Smart Thermostat ultra smart thermostat, the SLP99V gas furnace unlocks a world of connectivity. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. Lennox blower motor problems Blower motor stopped - seemed the fan limit switch was hung up - cleaned and lubed just a touch - worked for a week or so until this morning. The Pontiac Grand Prix has a blower motor that is regulated with a fuse located in the fuse panel inside the glove box. Minn Kota trolling motors are renowned for their durability and reliability. Lennox fans ensures that essential equipment can stay in top performance and keep spaces heated and cooled. See TEST A and figure 1. switched the thermostat to a/c and the motor switch to on - blower fired up - worked for a few hours and shut down with fan switch on … To my surprise, blower motor started out perfectly, with no sounds being emitted, no critical error codes in display. This guide provides easy troubleshooting steps for issues ranging from ignition failures to blower motor malfunctions. If ohm reading is met motor has passed. Date First Available : October 15, 2013. If you don't have one, you might consider having power company install a surge resistor in main box. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. The refrigerant charge should be checked and system pressures should be gauged.
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3 - If the circuit is open move to test B and table 2 for acceptable resistance. 60L22 - Lennox OEM Replacement Furnace Blower Motor 1/2 HP 115 Volt. Karcher power washers are known for their efficiency and reliability. Make sure it's set appropriately for the season. If ohm reading is met motor has passed. Worn-out motor bearings A malfunctioning control board. If you received the 201 error,the thermostat lost communication with indoor blower motor. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. The 3−pin plug will click when it latches properly. running at a reduced CFM (Cutback Mode - The variable speed motor has pre-set speed and torque limiters to protect the motor from damage caused. So, if after applying the first step, this error code doesn't fix and the communication doesn't restore, then, you should check if there is an issue with the motor. ing applications up to 5 tons. The larger the component, the more expensive it is. 1 - Remove the motor harness from from the blower drive. urine drug screen labcorp test code If you received the 201 error,the thermostat lost communication with indoor blower motor. Installed new blower motor but not able to clear E201 code to restore com Lennox Indoor Blower Motor Problem Musings of an Energy Nerd Martin Holladay 2016-01-05 In this fascinating collection of postings. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. If your furnace fan won't turn on, these are the most common reasons. The indoor blower distributes warm air, so you won’t have heat Several things can be wrong, including: A power outage; A brown-out; Motor not receiving power; Loose wiring; Condensation on uncovered system component controls. Box 799900 Dallas, TX 75379−9900 The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992. Expert Advice On Improvi. Customer Reviews: 4 To accurately diagnose and troubleshoot a bad HVAC blower motor, the step-by-step testing process is crucial. The CBA25UH Air Handler from Lennox offers a three-speed capacity that delivers economical, high-efficiency comfort through out your family's home Motor Motor Direct drive. HVAC blower motors, which are almost always of the INDUCTION motor type, fail for a variety of reasons. Call a technician for repairs. If you received the 201 error,the thermostat lost communication with indoor blower motor. Lennox error code 201 refers to a problem with your furnace’s blower motor. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. home depot delivery customer service This book differs from others as it gives key. If the furnace is making a high-pitched sound it is likely the blower belt or the blower itself. That points to a problem with the "fan circuit". Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. This guide provides easy troubleshooting steps for issues ranging from ignition failures to blower motor malfunctions. more Here are the most common reasons your Lennox furnace's blower runs constantly - and the parts & instructions to fix the problem yourself. Nov 13, 2023 · Lost communication with indoor blower motor. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. If my answer has been polite, professional,and thorough, please click one of the ratings before you go. Belt and Blower Problems. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. The unit size code for the air-handler and the size of blower motor do not match. Reconfigure control. Here are the most common reasons your Lennox furnace's blower won't run - and the parts & instructions to fix the problem yourself. Lennox Industries IncO. Discover solutions to 7 typical Lennox furnace problems. Possible causes include: power outage, brown−out, motor not powered, loose wiring, condensation on air handler control board. roost real estate You can't pour it down the drain or into the soil, because the Environmental Pro. Call a technician for repairs. Advertisement You can clean. Campsites cannot be Reserved. Hey HVAC techs! I'm Greg Fox and today we're going to talk about Diagnosing a Bad Blower Motor. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. See TEST A and figure 1. Manufacturer : AirXHeat. Dallas, Texas, USA G40UH(X) SERIES. Worn-out motor bearings A malfunctioning control board. Simply turn the thermostat to "cool" and observe if the air conditioner starts to blow cool air once more. This product is used in several different models. Purchasing a vehicle with a lien can be a huge problem. Use a multi-meter and verify 24 volts DC is being supplied at the thermostat G (Blower) and C (Common) terminals. While these products are known for th. When this wire is energized, it tells the furnace to start the. es used for upflow or horizontal applications only, manu-. Lennox designed and built, direct drive blower. 0 My Lennox HVAC system started working intermittently as of a couple of months ago and over that period progressively worsened. If ohm reading is met motor has passed. A car's starter is one of its more important engine components. and troubleshooting problems with the system's.
If the furnace is making a high-pitched sound it is likely the blower belt or the blower itself. Installed new blower motor but not able to clear E201 code to restore com Lennox Indoor Blower Motor Problem Musings of an Energy Nerd Martin Holladay 2016-01-05 In this fascinating collection of postings. hich is suitable for use in HFC-410A applications. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. Dehumidifiers play a vital role in maintaining optimal indoor air quality by removing excess moisture from the air. Expert Advice On Improvi. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. we lead the field in innovation with our cooling, heating, indoor air quality, and refrigeration systems. closed pubs for sale manchester 2 - If ohms to ground shows low resistance replace motor. Cost for parts also can vary by geographical region and HVAC contractor. The ON setting may be at 140f+ from the factory - I suggest dropping it down to 110-120f to save gas. You might be able to resolve some of these errors on your own. amerigroup primary care physicians In July, 2022 I started receiving many batches of Urgent Notification emails from the Carrier system: 44-CANNOT COMMUNICATE WITH. I wanted to expand on our recent gas furnace troubleshootin. ing capacities of 40,000 to 100,000 Btuh and cooling ap. ing capacities of 40,000 to 100,000 Btuh and cooling ap. age, brown-out, motor not powered, loose wiring, condensation on air handler control. dog food puppy Indoor Blower Start Problem. If you’re into gardening at. Lennox Error Code 292 indicates an issue with your blower motor, due to which this is not able to start. Lennox Error Code 292 indicates an issue with your blower motor, due to which this is not able to start.
Other Information: Ninnescah sailing area is home to the Ninnescah Sailing Association. I've mostly been paying attention to alerts received on the thermostat, where I've been getting "critical" alert 292 (Indoor blower motor start problem) about every 3-4 days since 1/1. The most common reasons for replacing the blower motor are when the furnace is loud or the blower motor does not run, but … 1 - Remove the motor harness from from the blower drive. Checking Ground Fault Test A. age, brown-out, motor not powered, loose wiring, condensation on air handler control. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. If you received the 201 error,the thermostat lost communication with indoor blower motor. Item model number : CECOMINOD076572. * Based on sound pressure levels during steady-state, high-fire operation of Lennox SL280UHV070V36A and leading competitive units at mid-point temperature rise and minimum external static pressure when set up per Section 43 of AHRI 260-2001. The indoor blower distributes warm air, so you won’t have heat Several things can be wrong, including: A power outage; A brown-out; Motor not receiving power; Loose wiring; Condensation on uncovered system component controls. In some cases, a simple reset can solve minor issues with your Lennox thermostat. Blower wheel: $25-$300 Pulley: $30-$250 Shaft: $75-$200. Experiencing issues with your furnace blower motor? Uncover the common problems causing the malfunction and explore practical fixes to get your heating system back on track. Best Sellers Rank: #544,575 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement) #169 in Furnace Replacement Motors. Replacement Available. Problem may be on system component control or motor side. If you received the 201 error,the thermostat lost communication with indoor blower motor. Compare the top HVAC systems by Goodman and Lennox to determine which one is right for you. This error code appears when the furnace is unable to contact the blower motor, as a result, it doesn’t start and throws an error 201. Date First Available : October 15, 2013. Hello everyone, I am having an odd problem with my air handler. See TEST A and figure 1. Technical Hot and Cold 38568 Webb Dr. gasbuddy hobart indiana Most commonly, this happens when the fuse into the printed circuit board has been blown. The next most common problem that can occur with an air handler is a failure of a blower motor, whether it be the blower motor or something else that causes the blower motor to fail. Ninnescah sailing area513 W97 50 Map of Location. EL297UHE units are available. This product has been replaced by Cat# This video provides step-by-step instructions for replacing the blower wheel on Lennox furnaces. The indoor blower distributes warm air, so you won’t have heat Several things can be wrong, including: A power outage Motor not receiving power. Here are 4 common symptoms of a bad blower motor: Low/no airflow from vents. - 1 package 174 188 Indoor Blower Wheel nominal diameter x width - in. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. At least the unit tells me it's the blower. Possible causes include power outage, brown-out, motor not powered, loose wiring, condensation on system component control without cover on breaker. 3 - If the circuit is open move to … Here are the most common reasons your Lennox furnace's blower runs constantly - and the parts & instructions to fix the problem yourself. There are many reasons that a car's air conditioner can malfunction. However, like any other appliance, they can encounter problems o. If your furnace fan won't turn on, these are the most common reasons. Worn-out motor bearings A malfunctioning control board. This can cause the furnace to be noisy during operation. Technical Hot and Cold 38568 Webb Dr. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. Possible causes include: power outage, brown−out, motor not powered, loose wiring, condensation on air handler control board. railroads america We make fixing things easier! Dec 4, 2023 · Common causes of a Lennox furnace blower motor failure include: A faulty capacitor. New (4) from$24500& FREE Shipping. Hey HVAC techs! I'm Greg Fox and today we're going to talk about Diagnosing a Bad Blower Motor. Let your imagination set the scene -- create an indoor craft. These are breaking news, delivered the minute it happens, delivered ticker-tape stylemarketwatch Indices Commodities Currencies. Lennox error code 201 refers to a problem with your furnace’s blower motor. There are many reasons that a car's air conditioner can malfunction. Oct 4, 2021 · Lennox furnace error code 201 means your furnace can’t communicate with the indoor blower motor. How much does boat storage cost? You can expect to. 3 − Align the tab on the control module connector with the notch in the motor casing. 2 - If ohms to ground shows low resistance replace motor. Problem may be on system component control or motor side. The CBA38MV is the industry's most quiet and efficient air handler, providing reliable comfort, more consistent temperatures, and enhanced humidity control in all types of environments. However, like any other appliance, they can encounter problems o. We make fixing things easier! Dec 4, 2023 · Common causes of a Lennox furnace blower motor failure include: A faulty capacitor. Replacement Available This product has been replaced by Cat# Print. Campsites cannot be Reserved. Follow these instructions to change your AC filter. 3 - If the circuit is open move to test B and table 2 for acceptable resistance. First, check your thermostat. A decrease can make the system quieter. Several models are available in sizes ranging from 1 All units are equipped with Jun 9, 2016 · I have a 4-ton (Lennox CBX32MV-048-230-06-03) air handler with a blower motor that makes a series of thumping sounds when it starts up.