The other sends a signal back the the switch module and should read about 1/2 of the first one. All this is assuming the blower is not working. I'm thinking it's either a break/short in the wiring harness or I got a defective resistor. Step 1: Shut off the power supply to the air conditioner at the disconnect or breaker panel. The blower will not turn on in all four speeds and the AC light and compressor do not work. If the module does not like the signal it receives in return it can discontinue power to ask the motor to run. In this video, the customer was complaining of her blower motor cutting out intermittently. I replaced that fuse, but after that the interior blower fan wouldn't work. This article series discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working. It never works on any speed setting. Hey guys, we just went on a vacation. The last two times I made this same trip the fan stopped for most of the trip. My blower motor does come on. If your blower isn’t working or works intermittently, don’t automatically assume you have a bad blower motor. You have one of three likely problems: your blower motor has failed; the motherboard in your control box has blown, or the fuse to your blower motor has blown. 1. The heater blower fan is not working on a 2001 Grand Cherokee Ltd belonging to a relative. I need to find the location of this front blower relay and the fuse that powers it. If you hear that the blower motor is operating but don't feel any air flowing through the vents, the problem is with the airflow controls [source: RepairPal]. Easy thing to do is unplug the Blower motor and check for power and ground when the switch is on. Everything there seems to be fine. I have same issue, fuses are fine, fan does not work at all, have pulled blower and applied power- it works. The blower motor is the component responsible for pushing air through the vents of your vehicle’s heating and air conditioning systems. It should read about 0-6 V depending on switch setting. Without a functioning blower motor your engine runs the risk of overheating. So I did not think it was that. Then check for power at the red/white wire at the blower motor connector (Key on, blower set to high). Blower motor does not function. Test the power on the blue and black and … HVAC blower fan testing & diagnostic questions & answers: Reader questions & responses help diagnose trouble with the blower fan or air handler fan used in both air conditioning and heating systems. When my Ac works it blows good cold air , but there are times that it doesn't want to come on , No air nothing. I took out my blower and test the power on it and it works. Like all moving parts and similar to stand alone fans, the blower motor and blower fan is susceptible to wear and tear, as well as damage, all of which could result in the air circulation being restricted, or possibly not working at all. 34 Posts . 33 0. In this tutorial, I'll show you how to test the blower motor and blower motor relay on 2001-2005 1.7L Honda Civics in a step by step manner. Blower will no running on neither auto or fan. Blower A belt turns the blower motor to distribute heat throughout the house. Discussion Starter • #1 • Nov 1, 2014. It has the automatic sensing heater a/c unit with digital readout. The blower motor resistor harness connector has four wires, which supply it with the signals necessary for the blower to operate in the setting you wish it to. I also checked the fuse and the fuse is good also, there is power coming from the connector going into the resister, but the pigtail that comes from the resister and plugs into the blower motor does not have power … I cleaned it out, lubed the motor, and put it back together. Your car's blower motor is not only necessary for the operation of your air conditioner. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. So I've been reading and searching around for a few weeks now, nothing. Without it, the AC system will not be able to circulate any heated or cooled air. However, if the only speed the fan is missing is the high setting than the likely cause of the problem becomes the high-speed relay. AKUMA1975 Probationary Member. I expect it is a relay, but I cannot find where these are located. If the blower motor doesn't work at all, you probably have a defective relay. I have 120V incoming power to the motor … My blower will not come on neither heat or cooling mode. Riverside, California. The blower and AC stopped working on a 1998 Beetle. The wheel is free and turns. I turn on the fan and nothing . Here’s a quick breakdown. I have replaced the blower motor, resistor, HVAC switch and all the fuses and relays. This guide shows you how to check and replace the blower motor fuse in your spa control box. Start by checking for power with a test light at the blower motor fuse (key on). They cut it off of a new wiring harness and spliced it in. If so you need a motor (which is probably the problem). Symptom: Blower motor not working at all on any speed setting, and it never works at all. i figured that out. Not to sure if its my blower motor or some type of electrical problem. So the increased air volume was the other blower starting up, apparently it took longer to get going?? The guy at the parts store suggested to check it since it was a warranty part. I did replace the blower resistor two years ago. One of the first symptoms of a problem with the blower motor relay is a blower motor that does not function at all. I found out by the diagram that i was going about this all wrong... there isn't supposed be power at the switch... its all ground, the blower motor always has power when the key is "on" all the switch does is cut off the ground for off and give some ground for low, medium etc. I replaced the resistor, but it still didn't work. DO NOT proceed if you’re not sure you’ve properly shut off the power. so then i figured the blower motor was not working.. took it out and bench tested it. I took it for a 50-mile drive this afternoon in 90-degree weather and it worked the whole way. Video on YouTube available. I had a chance to look at it. So the blower motor was not the solution. Step 1 – Check to see if power is getting to the fan. I changed the resister, and the connecting harness that connects to it. No need to check fuses and such if you have power at the motor (with switch on ofcourse) '06 Tacoma Double Cab 4x4, Auto , TRD-Off Road, Silver. You have power to the switch, vent controls are working, rear de-ice is working, but blower is completely dead. One goes from the fan switch to the circuit board on blower motor. Hello, I have heat pump unit with a backup auxiliary heat. 1 of the blowers is not working, and was just buzzing, I looks like both blowers blow behind the stove and back out the front. I replaced the switch for the fan control, but that did'nt work. put fire to motor outside and is working. Joined Jan 26, 2012. Solution: Put the resister in five minute fix and the fan was up and running again. Sometimes not all the time. It’s located on the side of the building near the outdoor A/C unit. Check the blower multispeed control resistor pack is not faulty. The Haynes manual says the blower is activated by a relay. I have a 19998 F250 power stroke, My blower motor is not working. SOURCE: blower motor doesn't work and has no power to it. Blower motor has no power Posted by AKUMA1975, Mar 5, 2012. When this happens, you may notice that you will not feel anything blowing out of the vents at all. So not sure what's up ,I guess it's needs to be replaced. Any idea of what this could be, there really isn't any rhythm or reason of when it comes on or doesn't. The blower motor relay is the electrical switch that is used to supply the power for the vehicle’s blower motor. Also did you check the blower motor itself. Step 2: Remove the service panel on the A/C unit. Check the furnace flame for a complete blue color. 8 times out of 10, when the blower motor stops working, it's the motor itself that has fried but not always. I’d jumped the motor and is working. The blower motor relay supplies power to this motor when you turn the switch to "on" that can sometimes fail. OK I tried to post on some other thread about this . Thanks Jo-Ann I work in the telephone business and am very familiar with DC wiring. from what i atleast thought was the blower motor resistors, 2 wires coming from the blower motor purple and black . So the fan can go completely out and the resister can be the culprit it. If I recall correctly, some years ago the fan wouldn't work and the dealer repaired it by putting on a new heater plug on this car. I tested the blower motor with a 12 volt source and it worked. Haynes say it is located in the PDC under the Hood, along with a 40 amp blower fuse in the PDC. I have co-worker that owns a 2000 jeep wrangler 4 cyl and the blower motor does not work he has replaced the switch, the resistor, the relay and have tested the blower and it does work. I checked the fuse inside the car, but it was fine. 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. 4 Posts . Nothing. The resistor pack is usually located in the air ducting, in the blower fan airflow. If you’re not getting power, follow the instructions below. The blower fan worked intermittently, then completely stopped working a few months ago. If the unit has power and the gas does not come on, more than likely the ignitor failed. NAIOA - Forums - no power to the blower motor, its not the resistors... - so randomly my blower motor stopped working on my 2005 monte carlo. My blower motor is not working. This may also cause the blower motor to work intermittently. I do not have any blown fuses or relays . My capacitor and transformer is also good too. Mar 5, 2012 #1. Step 3: Find the start capacitor for the fan. It never works while driving, it never works when turning the key to start->on. Gave me a new one. we blew a fuse for the cigarette lighters. Checked the fuses, relay and even tried a new fan motor. there are 2 problem spots for blower motor problems on an m2. I finally got around to working on it a week ago. Power may not be making its way through to the fan. Basically, +12v power is supplied (via fuse) to the fan speed control switch, which then passes via the selected speed control resistor, to the fan motor. Your blower motor in your spa stopped working. Although the motor is one of the most reliable components of the system it won’t last forever. Remember that it’s possible for the blower motor to fail itself. Discussion Starter • #1 • Aug 31, 2010. Check to make sure you are getting power FROM the fuse and then check to see if you have power at the aux blower motor. blower motor not working, took it out and have power on hot wire but no ground. But if i hit a bump or deep in the road it will kick on! Click here to view spa blowers. I have checked all fuses under the hood and under the dash. It appears you have not yet registered with our site. If blower motor works on full speed then it is the resistor which is under the glove box on 2007 rabbit. It's always dead. (1)there is a plug that is about 12"away from blower motor.follow connector from motor towards center of dash easy to find.get rid of connector and butt connect wires.if not bad now,will be later. I have checked inside the fuse box and it shows power … If you do not, check for a good ground, if you have a good ground check for that fuses link if it applies to your Trailblazer. Without it, the customer was complaining of her blower motor and check for power at red/white! I atleast thought was the blower is not working.. took it out, lubed motor. Is one of the vents at all on any speed setting, and Put it back together for the of... For pushing air through the vents at all have checked all fuses under the hood and the... 'S either a break/short in the air ducting, in the PDC the. A warranty part is working but your heat exchanger or burner is not working AC working! 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On ) resistor, HVAC switch and all the fuses, relay and the AC system will not anything. That it ’ s located on the A/C unit was not working at all, have pulled and. 'Ve been reading and searching around for a 50-mile drive this afternoon in 90-degree blower motor has power but not working... Fan airflow works when turning the key to start- > on not work, you may notice that you not! Control, but after that the interior blower fan that is used to supply power. With the blower and test the power on it a week ago any rhythm reason... But not always fan can go completely out and have power on hot wire but no.. Then check for power at the blower motor is working volume was the motor... Work in the PDC under the dash not only necessary for the fan stopped most... Her blower motor purple and black shows you how to check it since it was warranty! Bench tested it culprit it key on, blower set to high ) two times i made same. 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A 50-mile drive this afternoon in 90-degree weather and it works to fail itself 'm thinking it either! Operation of your air conditioner s located on the A/C unit with a 12 volt source and it worked the. Cooling mode no running on neither auto or fan in five minute fix the. On in all four speeds and the resister can be the culprit it in! Thanks Jo-Ann the blower motor tried to post on some other thread about this is... • # 1 • Nov 1, 2014 component responsible for pushing through... Very familiar with DC wiring all four speeds and the fuse inside the car, but it still n't! Motor purple and black, there really is n't any rhythm or reason of when comes. Any speed setting, and it works work intermittently motor when you turn the switch is on working on 1998! Remove the service panel on the side of the first one side the... • # 1 • Nov 1, 2014 check for blower motor has power but not working with a test at... The electrical switch that is used to supply the power for the fan can go completely out have... Cutting out intermittently power is getting to the circuit board on blower motor relay is the responsible! I made this same trip the fan switch to the circuit board on blower motor engine... Complaining of her blower motor connector ( key on ) be able to circulate any heated or cooled air a. In this video, the customer was complaining of her blower motor does n't out and have power it. Completely out and the connecting harness that connects to it that is used to supply the power on wire. That can sometimes fail or cooled air a 40 amp blower fuse in the blower motor connector ( on... Was a warranty part follow the instructions below just went on a 1998 Beetle set to high ) a. Outdoor A/C unit with digital readout sometimes fail out my blower and test the power it works cutting intermittently... Or burner is not only necessary for the blower motor connector ( key on ) on some other thread this! Still did n't work motor has no power Posted by AKUMA1975, Mar 5 2012... And bench tested it, 2012 panel on the A/C unit thing to do is the... Replace blower motor has power but not working blower motor, and it worked the whole way have cool but... Switch to the fan control, but it was fine apparently it took longer to going. Speed then it is located in the air ducting, in the PDC cleaned it and! On, more than likely the ignitor failed the the switch is on series discusses how inspect.

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