Mack Blower Motor Not WorkingWhy is the blower motor not working on my car? My car has an automatic transmission. If the coil is allowed to thaw, then the unit will work for a short time before the ice builds up again. Check the speed of the blower, you obtain maximum CFM at 1975 rpm. 6 year old Trane Central A/C not working for 2800 sqft house. I replaced it with new one and remove all errors via VCDS, but FAN still not working. If everything is working correctly, you should see the mouse appear in your Bluetooth preferences. Mack Blower Motor Not Working. new blower motor not work / issue U1076 00 . The starter relay transmits power from the capacitors to the compressor. I have a 2018 Mack Pinnacle CXU613 the ac/heater control. You will need to check 3 places for this. An electric motor uses magnets to create motion. Utilization of Body Builder connectors ordered and provided by Mack is strongly recommended as your power, lighting, and ground source for body installation, PTO installation, and operation. What Does a Blower Motor Do?. My questions are; 1- is the resistor still possibly the culprit for the blower not working?. If your heater or air conditioner does not blow air through the vents, this could indicate that the blower motor fuse has probably blown. We cannot fulfill any orders for. MEI 1558 Blower Resistor w/ 5 Terminals for Mack Trucks 12V. Lockport union sun and journal police reports. Many HVAC related calls are due to the blower motor not working. And if your Mac really is dead, we'll also tell you where to turn next. The blower won’t come on for 30-45 minutes after the AC has been turned off, but after that it seems to turn back on fine. Repairman came out and confirmed that. Buy Mack Blower Motor with Wheel: Blower Motors - Amazon. The blower motor is crucial to the proper function and operation of your HVAC system. The youth of the beginning of the century simply "hurt" universal motorization, and the Johnson brothers from the American state of Indiana were no exception. About Not Mack Blower Motor Working. Mine did this last year, turned out to be the motor in my case. An aging, problematic, or dirty motor has to work harder to properly circulate conditioned air throughout your home. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. CONTACT CALL US: 800 541 5905 | Warehouse Locator. In this HVAC Training Video, I Show How Several ECM Multi-Speed Fan Motors Work and How to Troubleshoot Them to Determine the Problem. Fuse Box Diagram Saturn Vue (2001. It might be a bad blower motor resistor / fan control amplifier, I would try replacing that first before the blower motor itself. You can obviously choose any other software which reads the flash, this one was easy to set up and worked out of the box. My fan/blower motor does not come on on the low setting, all other settings work. Mack Granite Blower Motor (HVAC) Mack Description. How to Troubleshoot a Blower Fan Not Working. After a couple of hours or so, standing in the parking lot, the fan starts working when I start the car again. Mack Working Motor Blower Not. Overloading the breaker/relay, then when. Your Direct Source for Air Conditioning, Heating, and APU Parts for Light to Heavy-Duty Truck, Bus, and Off-Road Equipment. Odds are good you will need a new filter. Air conditioning was working fine 2 days ago and then all the sudden it just stopped working the blower does not work I can turn it over to heat and I can feel a little warm air coming out of. I had some problems along the way and almost gave up on . The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. Engine Control Module/CAM, Emissions, Injectors, Electronic Throttle Control. Blower Motor Resistor Card Removal. So, I was checking the power at switch and the switch fell apart, so I replaced that as well. RR/HVAC fuse 30amp located in the under hood fuse box. The blower would then be under high back pressure. Throughout the day, the A/C will work fine. Get great deals on Mack semi truck blower motors & components at TRUCKiD. About Not Working Mack Motor Blower. 2011 cxu613 ac / heater blower is not working. The synopsis: Check fan motor fuse Clean/replace cabin air filter Check, fix, possibly replace fan […]. If the motor bearings are worn out, replace the motor. In case you want more details how BLDC motors work, you can check the other article or watch the following video which contains explanation of the working principle of a brushless motor and how to control one. then eventually after running for a while the blower will come on way before. Please keep trying or visit our Contact Us page for other options. 8GHz X7900 and an ATI Radeon 2600 Pro. In this tutorial we will learn how to control a brushless motor using Arduino and ESC. Mack Blower Motors, Volvo Blower Motors; 30006707 006-A40-22 BLOWER ASSEMBLY 24V W/3 SPEED RESISTOR 26-19904-24-AM $ 190. The screen shows fan speeds change but nothing happens with the motor. Most furnaces should be relatively quiet when they’re running. This may appear too simple for words, but you would be amazed how many people will actually over react to a mechanical problem and run out . cd auxillary cooling fans (not used) 19 na-o spare connectors & feeds 43 cf urea dosing system 1/2 20 nb-o junction posts 44 ch urea dosing system 2/2 21 xa-o data link / diagnostics 45 dc transmission cntr:4 generation 1/3 22 dd transmission cntr:4 generation 2/3 23. com FREE DELIVERY possible on eligible purchases. If the blade does not turn freely, this indicates that the motor bearings are worn out. Need help solving a problem, prototyping a solution or some other specialized skills. There is still a chance that the blower motor control could be faulty, but if the control knob feels good and all the fuses and relays are good, chances are you need to replace the blower motor resistor. I have a 1998 Mack triaxle an need to get my fan working better. About Motor Working Blower Mack Not. I read some articles and after I realized it will be blower motor with resistor. 3 Inch Diameter Blower Motor Fits Mack CH, CL, Granite, CX Vision - Replaces 7787- . I recently got a 2007 iMac 24” w/ a 2. Bad battery or low charge, or bad connections at the battery terminals. About Mack Blower Motor Working Not ), the blower is easy to control and minimizes stress on the arm. MACK GU (Granite), CHU and CXU (Pinnacle), MRU and LEU. In order to get your controller to work, you'll need to head into the Steam settings. Read on for some simple tips that should get your Mac working, from the obvious stuff like checking the power connection, to performing a power cycle, starting in Recovery mode, and checking the file system. Typically you lose the lower speeds on your blower reisitor, becuase they get usede the most. Home Improvement: The blower motor in the furnace stops working at night most of the time when the AC should be on. The blower motor should have two wires, one is a ground fed by a mechanical or solid state resister/HVAC computer. When ac compressor not working but you hear some humming sounds from the unit, chances are the compressor is trying to access a non-operational capacitor. Do I have to replace the entire cluster of controls?. Mack Cxu Fuse Box ~ thank you for visiting our site, this is images about mack cxu fuse box posted by Benson Fannie in Mack category on Nov 27, You can also find other images like wiring diagram, parts diagram, replacement parts, electrical diagram, repair manuals, engine diagram, engine scheme, wiring harness, fuse box, vacuum diagram, timing. Mack Blower Motor Working Not. Mack truck wiring diagram free download. It’s also important to check that the power is getting to the blower motor. The normal operating temperature for Mack engines tem should be checked for problems by an authorized Mack Vehicle dealer. Keeping the black lead on a good ground, usually . This may also cause the blower motor to work intermittently. Thermostat issues; Low refrigerant; Leaky ducts; Fan issues; Clogged drain lines; Worn compressor, fan, and blower motor contactors. Find Answers in Troubleshooting FAQ. Neighbor looked at it and said it appeared the blower motor was bad. A fully charged car battery would read about 12. Easily find what you need from 2,219,271 parts available. You can check it but highly doubt it's the problem. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. AC/Heater blower issues? Discussion in ' Kenworth Forum ' started by tnpete, Aug 14, 2017. Check the furnace flame for a complete blue color. We just got back our new blower motor. You can purchase an aftermarket one for as low as $15 shipping included. Now download STM Cube Programmer which runs on MacOS, Windows and Linux. Is there a high output blower motor available. Check out the similar items below or give us a call. Most of the time it is as simple as finding the motor underneath the glove compartment or removing the glove compartment. The capacitor provides the power needed to start and run the compressor, the blower motor, and the outer fan. Wondering if this could be the blower motor. Mack truck blower fan works on 4th speed but not 1. Rangemaster Leisure 55 - Serial 5462 001 760 Hi, the grill hasn't been fully working for a while and I have [Read more] Aspera motor, 4 stroke engine on. 2006 2001, MR, Blower Assembly, 12v, 3 spd resistor w/Red Dot A/C, 4379-RD5-8837-0 (For fan motor and blade only), 2790-HV33105. I got it at a good price but I suppose I may have found out why. If the valves are closed, the warm air doesn’t make it to the truck’s cabin. OEM Nissan are probably around $100. Mack Blower Motor (HVAC) on HeavyTruckParts. Many are experiencing widespread phone service issues. The Blower motor on my AC unit turns off at random times while the outside unit continues to run which is causing the coil to freeze up. Mack Motor Working Not Blower. The block is a GM Bow Tie 4-bolt main tall deck-100 over 454 (475CI), fixed/mechanical roller cam, the heads are. If there is power on one end of the blower fan fuse but not the other, then the fuse needs to be . Our car experts choose every product we feature. So, I changed the resistor but that didn't help. Finding the location of the fan assembly is a good place to start. If the blower fan does not work on settings 1 and 2 but does. Retrieve fault codes from heater’s memory using Diagnostic tool or EDiTH, refer to. Connect the controller to your computer via USB, no need to connect the power supply!. The most common reason they stop working is just because the battery needs replacing, but when they're broken for real, a new one can cost a small fortune. A furnace blower motor that stops pushing warm air out is not the same as a blower that is forcing only cold air into your home. However, the system again froze last night after the furnace blower motor had been non-functional. If you have ever played with magnets, you know about the fundamental law of all magnets: Opposites attract and likes repel. Where can I get a replacement blower motor for a Baker Wood Stove? 1 Answer If you cannot locate the original replacement blower (which we would not offer), the Caframo Ecofan AirMax 812 Heat Powered Wood Stove Fan would be an excellent choice and will work with any freestanding wood stove with a vertical/top vent connection. Pull the bad belt off the blower pulley, then remove it from the motor pulley. The next step is to check your capacitors. Blower Motor Won't Shut Off, Blower Won't Turn On. Not even if I put it on MAX manually or anywhere in between. If power is getting to the fan motor, but the motor won’t run, this also indicates. About Blower Not Mack Motor Working. UAC® - HVAC Blower Motor Resistor. It doesn't require any libraries to get it working. Motor/Generator Temperature Sensor. If you don’t feel comfortable working inside the units, it’s time to call a pro, but if you’d like to try cleaning the coils on your own: Shut off the power to both the exterior and interior units. Whether you are putting your equipment away for the season or needing to replace a part, locate your equipment or engine manual to get the information specific to your product. For example, the Honda bulletin. Blower Motor resistor is faulty, I can 100% guarantee. Shop Mack CH heat & AC parts at 4 State Trucks. If the auxiliary bunk relay is working, this is sending power to the fan speed control knob in the. If your unit turns on but blower function is not correct, be sure. 00 Length13 3/4inHeight5 3/8inWidth5. Working Not Blower Mack Motor. If a terminal is loose (you can turn it with your hand) tighten it. We only carry the highest quality Mack Rl Blower Motor and we have the best pricing and warranty in the industry. He didn’t mention the fan not working in the description. Mack Blower Motor Assembly - Mack 3543-H9631, Truck Air 01-1206, MEI 3955. There are a few issues that could affect your blower fan. If the blade turns freely, test the incoming power to the fan motor. Wait 45 seconds to 60 seconds and kicks back on for a few seconds then back off again. By Keffer inc, May 25, 2017 in Electrical, Where Is the heater fan located on a leu613 mack trash truck Quote;. The air does come out of the floor vents, dash vents, or defrost vents whenthe truck is moving, just the blower does not turn on. MACK 4379-RD5103370 - BLOWER MOTOR Part Number 4379-RD5103370 Manufacturer MACK Description BLOWER MOTOR details. 3 check behind the heater control head itself for being hot or melting. Truck Heater Not Working? Here are Some Common Reasons Why. ok no the blower is not working, i cannot make it go in any speed, -mack. Body Builder Wiring Diagrams. blower kicks off while the burner is active and then it will come back on after a few minutes. Re: cabin blower fan stopped working. Need a Blower Motor for your Mack Truck? Class8TruckParts. Discussion Starter · #1 · Feb 1. Using your trackpad or another mouse, click Left Click Not Working on Your Magic Mouse. The most common causes for AC fan blower motor not working are blown fuse, bad relay, resistor or control module malfunction and faulty blower . However, there will come a time in the middle of the night when it s. Motor/Generator Rotation Speed Sensor. AC not blowing or heater blower not working? Blower resistor keep failing? When heater & AC fan only work on high, it could also be your blower motor. Mack Rl Blower Motor are available now. This happens when the bushings or components within the motor are damaged. Blower motor won’t shut off Blower motor keeps running after car is shut off. Joined Jan 27, 2011 · 9 Posts. Mack Blower Motor - Mack 2790-HV33105, RD-5-10053-0P, Truck Air 01-2016, MEI 3761. I suggest you get a competent tech to test your unit. If not, then here's one last step!. The blower motor resistor terminals look a little oxidized which after reading your article sounds like a possible culprit. Hi There, The resistor is what controls the speed of the blower motor, not the relay. If they won't spin freely, it means it's . So it may very well be the culprit if you see a significant rise in your utility bills. ECM control modules do fail though so be sure to verify it has gone bad. There are many softwares about automotive. Keeping the black lead on a good ground, usually a bolt on the engine block, and the blower switch turned on, use the red lead to probe the plug that usually attaches to the blower motor. Buy A/C Blower Motor Air Conditioning Mack Truck 3762 NEW: Blower Motors - Amazon. High Refrigerant Pressure Fan On Time . com ✓ FREE DELIVERY possible on eligible purchases. Vent definition is - to provide with a vent. The second is that the electric motor is not working. If not, the button on the main control may have failed. The other is fused power, this may or may not have a relay. About Blower Working Mack Not Motor. There may be a safety system that shuts off the blower motor if the back pressure is too high. If your RV is old, the motor of your blower fan might be worn out even though it is a little warm. It appears the HDD fan is not spinning at all. I appear to have good power and ground down at the motor and have change the motor with no change. summary: mack trucks:due to excessive moisture in the climate unit, some vehicles may develop a blower motor failure. Outside unit is working but the inside air handler is not. These do go out from time to time so be sure to check that you are getting the proper flow of voltage through these. Mack Blower Motor Not Working. The estimate says: ""Bad motor, will replace. I have checked the power lead to the blower and it has power. The blower fan will not work as fast as it used to if the motor is worn out. my blower motor just stopped working I changed the resistor but still it wont work also im not getting power to the resistor when I check for current with a tester I also changed the climate control switch assembly still nothing the blower motor moves freely if spun by hand I don't hear any noise coming from blower motor when its spinning its. Fan coil motor is rotating in the reverse direction ; Fan motor belt loose or slip; Temperature setting of thermostat too low; R. Tacoma Fan Switch Not Working The fan blower switch failing on the Toyota Tacoma (2005-present) is a common issue with this model of truck. In some vehicles, though, the fan may not work at all, and only a little may come through the vents. Mack Blower Motor (HVAC) for sale on HeavyTruckParts. 75'' (OA Body) Wire Type: 2 wires Replacement Compressor: NULL Motor Diameter: 3. Item SKU: 24910410: Condition: NEW REPLACEMENT: Item Location Call for Information. By understanding how a motor works you can learn a lot about magnets, electromagnets and electricity in general. If you have a vehicle with climate control system and a variable speed blower motor and the blower motor won’t shut off and stays on HIGH with the car turned off and the key out, chances are the blower motor motor control processor is toast or the HVAC control module is damaged. Most users download the MSI Afterburner tool just to overclock their GPUs. A qualified technician can inspect the motor to make sure the lack of airflow isn't . Its a 475 CID Blower motor running on 89 octane. A motor of a given rated horsepower is expected to deliver that quantity of mechanical power at the motor shaft. The blower motor is powered by a fuse-like device called a relay. Check out free battery charging and engine diagnostic testing while you are Window Not Working?. Blower resistor keep failing? When heater & AC fan only work on high, it could also be your blower motor. Коды ошибок MAN часть 3 — furagruzovik. Cannot change to a/c, heat control or change any of the … read more. com has great deals and fast shipping! Order online or call our parts specialists right now. About Mack Not Blower Motor Working. If your blower is working on some speeds but not all, more than likely the problem is a defective Blower Motor Resistor Pack. Cutting into wiring harnesses is not recommended as it may affect CAN Bus messaging. As frustrating as not being able to right-click may be, it doesn't keep you from using your computer. About Not Mack Motor Working Blower. Is Your AC Blower Motor Not Working?. Typically it's done by measuring the voltage at the blower motor A failed power transistor was a fairly common cause for not working blower motor in some Honda and Acura vehicles. Blower motor was working fine then shut off and then came back on but shut off for good. Joined Dec 27, 2020 Posts 1 Reaction. Then the burner will kick off and the blower will kick off and on about five times. Using a test light or a multimeter set on volts, unplug the blower motor. The meter should read between 9 and 11. Blower motor does not function. The valves in your heater core open to let warm air into the vehicle. Replace the connector and add a extra ground from the blower motor. 2 check the plug going to the blower motor resistor for being hot and melting. About Mack Blower Working Motor Not. A blower fan is connected to the negative battery terminal (also called ground) on . The arduino code is pretty straightforward. Sorry, this item is no longer available. If the blower motor works in heating mode I don't think its failure to start in cooling mode would be a blower motor capacitor failure. Check for power on one wire and variable ground on the other. Heater/ AC Blower Motor Not Working Properly. If the blower motor doesn't work at all, the blower motor itself must be tested first. Single Shaft Blower Motor 12V CW - Truck Air 01-2613, MEI 3070. Learn the basics of how outboard motors work. Mack Trucks eMedia web site allows you to purchase Mack related vehicle service information such as service bulletins / manuals, wiring schematics, DVDs, operator manuals. I went through a problem that the blower motor was. Asked by Masclouds in Abingdon, VA on August 23, 2015. If you're missing power check your fuses again you may. The history of the creation of Johnson motors - this, one can say, is the history of outboard engines in general. A number of things could cause this to . Such as Software repair, diagnostic, key, crack, guide to install, It is easier to support for work. The A/C condenser and furnace both kick on, but no blower. While replacement is easy, the exact location of your blower motor fuse may vary from vehicle to vehicle. Could it be the blower motor and switch. When it worked now, then you're fine, and we wish you a lot of fun with Elden Ring. Mack Body Builder material is located on our public Mack Trucks web site here. We'll do our best to locate another one for you. Your hoses are damaged or clogged. First in the morning when I head to work, the fan does not blow air at all. Check the fuse for power on both ends using a multimeter. If your Coleman Mach is not powering on, first check to make sure you are getting proper power to the air conditioner. *js communication number: fsb-364-035, date: 2013-05-01 category: 126200 exterior lighting:turn signal:switch. Check voltage like described in case #1 : 2. Recirculation ventilation flap motor. The scary part is the fear to damage the GPU during this How To Fix MSI Afterburner OC Scanner Not Working. Jump to Latest Follow 1 - 3 of 3 Posts. Our new site is being launched, if you have any difficulties please call us. I have a 2018 Mack Pinnacle CXU613 the ac/heater control unit will only turn on the fan speed. Below describes the back story and the five step process to bring the unit back to life. A broken or faulty blower motor is impossible to repair; it needs to be fully replaced with a new unit. The blower motor in the furnace stops working at night most of the time when the AC should be on. Air Conditioner Blower Motor. The blower motor is the part of your HVAC system that uses the most energy. Order online or over the phone and get your parts by tomorrow. Do not work on or service engine-driven components unless . Working Motor Blower Not Mack.A/C Blower Motor Air Conditioning Mack Truck 3762 NEW. Sometimes these valves get stuck on the closed position and this could be a simple fix. If the terminals are full of white snowy looking stuff disconnect them and clean them up. The outside condenser will run all ~ AC Blower Motor not working during night. Self-propelled snow blowers rely on a belt drive system to turn the wheels. They're everywhere! You'll find them in your car, your kitchen, bathroom, office Find out how electric motors get stuff moving. Tacoma fan switch not working. Be aware that the motor efficiency is not calculated in to the values for kW and amps below. Here's how to fix your vehicle's fan . We can't wait to get it in the race boat!!! The new motor runs on pump gas, 91 octane. Also you can have a dirt plugged evaporator. The A/C still blows cold when driving down the road with the setting. I have to 12v outlets in the sleeper that do not work and I am trying to get them working again. When everything else checks out, there are only two possibilities left. blower a few times, FMP and ECU’s relay may click one time but heater would not make an attempt to start. TROUBLESHOOTING FOR AIRTRONIC HEATERS. You might be surprised to find out just how much work is done by electric motors. But Iguess you could jsut as easily have worn out your high speed reisitor coil. Take the battery out and run water through the cooling coil until it is clean. About Working Blower Motor Mack Not Mercedes Heater Blower Motor not working was a simple fault to find and rectify - blocked drain hole had caused the motor to fail - simple to check!. Diagnose and fix AC not working problem in your car or truck Start by checking the ac compressor. My blower stopped working a few days ago as well. If little air is coming through the vents (hot or cold), . Johnson BRP outboard motors operator's guide. Nordyne 7975a856 Blower motor not working Questions about repairs and parts for Nordyne furnaces, air conditioners and heat pumps for manufactured homes including Intertherm, Mac and Miller brands. The most common symptom of a faulty resistor is that the blower motor only works on one speed with the HVAC controls and it's inoperative on all . My blower motor is inop and I do not see a resistor. Hey guys, I opened the dash where the controls are and checked that plug and I have no power going to the fan controller?. One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function at all. If the motor is getting power but it’s still not enough to make it run, it means it’s time for a replacement. 1995 T600 ac blower kicks on, then like a relay kicks out. Item Description Blower Motor Package Quantity 1. AC light & recirc light still light up and AC compressor clutch engages when turning fan on in AC mode, but not getting the fan to work. On your issue, when this usually happens it is linked to the blower motor resistor. The sketch starts with declaring Arduino pins to which. This usually means the unit is completely inoperable. Here's How Your Car's Engine Works. 1 check the plug going to the blower motor for being hot and melting. The blower motor is not working!Is there a fuse that could've blowen? 2007 Mitsubishi Outlander. Specifically, an internal-combustion engine is a heat engine in that it converts energy from the heat of burning gasoline into mechanical work, or torque. More then like it's the blower motor . Help! Fan quit working on all 4 speeds. The doors, pipes or valves on your . The guy said he replaced the hard drive. The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. Blower Motor - To check for a broken blower motor, look for any unusual activity within the fan blades. Learn about L293D DC Motor Driver IC along with PWM, H-bridge Working, Pinout, Wiring, Arduino Code for controlling speed & direction of two DC motors. BLOWER MOTOR NOT WORKING If your blower motor fan is not working Hi Everyone: Customer concerns is the interior blower motor is not working in any position. When you press the "bunk" button on the front controls, this should trigger "Aux Bunk blower" relay. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). We may earn money from the links on this page. Why does my blower motor not work? Q&A. fans and fan belts, driveshafts and other related rotating assemblies, can be very dangerous. Hi everyone I have 05 Mack CXN613 and AC quit working after I check all fuses notice that APADS lights not coming on at all so Im not sure how to check that component. cabin blower fan stopped working. The blower motor (in the furnace) might run for one or two cycles at the beginning of the night but then it stops working the rest of the night. Always check the latest information at the “Wiring Diagrams” location. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power will be cut off from the blower motor circuit, causing the motor to no longer function or. Fan in the interior stop working. When it starts working, it works the whole day thru. 2012 Mack Granite (gu) Technical Service Bulletins.I have a 1998 Mack triaxle an need to get my fan working. You can find them under "Steam" in the upper left corner of the Steam window. Unplug the leaf blower and use a circuit tester to ensure that the on/off switch is working properly. Sometimes the OC Scanner does not work or show the result as it should be. Search: Mack Blower Motor Not Working. This item is NOT eligible for returns or cancellations. This is located right next to the blower motor. Its housed in the air duct just above your gas pedal. Mack truck blower fan works on 4th speed but not 1-3. If the blower motor isn’t working at all, you should first double check any applicable fuses or relays under the hood or in the cabin. Buy Now Mack Truck Blower Motor 7787-869445,1015007 Mack Heating And Cooling Parts: Blower Motor With Wheel 7787-869445 With over 35 year’s experience in the truck parts industry, we strive to provide our customers with. What is Adblue Euro 6 emulator? How does the emulator work? The blog section where you can find answers to your questions such as what are the important points to consider when choosing Adblue removal. The 2004 Chevrolet Silverado has 8 problems reported for blower fan stopped working. my furnace is a 1979 mac1378 Intertherm gas. If the fan stops turning, air will stop moving through the system. The first is that there is a thermal cut out on the leaf blower. Bypass flap motor potentiometer. Check for power at the motor itself. Thread starter Wayne McCully; Start date Dec 27, 2020; Dec 27, 2020 #1 W. So, I have had this problem going on for about a month and a half now with my A/C. Update: The new motor control board was installed yesterday and everything worked during the day. If your blower motor goes out, it could be the motor, a fuse,relay, or the motor itself. About Blower Not Motor Working Mack. Why is my blower motor switch not working? – Mysweetindulgence. Just because the light comes on, doesn't mean the signal is going out. If you're having problems with your heat or air conditioning not blowing in the car, troubleshoot your blower fan at home.