But he informed me that the blower motor was drawing 3 amps even though he said it's only rated for 1.8. Don't confuse amperes and voltage, or assume that low voltage means low amperes. Qualifies for FLAT RATE SHIPPING* In Stock. 2                              6.8 Amps                             6.5 Amps Blower motor problems can cause many driver complaints. Fan Speed           With Recirculation           Without Recirculation This website uses cookies to improve your experience while you navigate through the website. Amps can range from .01 to 20 amps or more. Fits: Car: 1957-58 $ 3.50 ... Heater Blower Motor Gasket - 1961-72 Ford Truck, 1966-72 Ford Bronco, 1962-70 Ford Car Part #: C1UF-18583-A. But this chart also tells us a few things about the relationship between blower motor speed, motor current draw and the position of the re-circulation door. Here’s what I found: 1 decade ago. Image 1: This brown wire is used to ground this Jetta’s blower motor. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. What should be a typical amp draw for for a blower motor on a resdidential ac. Reduced airflow also causes the blower motor to work harder, draw more current and that can cause repeat blower motor resistor failures. Recently, I posted to the MACS WordPress blog and covered a fuse issue on a 1999 Volkswagen Jetta. Thanks for your comments, Bruce! This category only includes cookies that ensures basic functionalities and security features of the website. Image 2: It’s relatively easy to connect an amp clamp and measure current draw. How many amps will the motor draw if the technician increases the blower speed from 400 to 475 rpm? In response to my post, I received a comment from reader Bruce Caron. Show Less. Become a member and receive a technical newsletter with information like what you’ve just read in this blog post visit http://bit.ly/10zvMYg for more information. Could be maybe a dirty cabin air filter or the blower was just tired? ROADFAR Heater Blower Motor 12V-3946686 Air Conditioning Blower Motor Fan Cage Fit for Volvo Truck 02-06 Single Speed. So if your motor is drawing less than the rated amps it means that the motor is not doing the max work. Furnace blower motors and condensing fan motors Amp draw are checked to see if they are Over-Amping or in some cases Under-Amping. VERTICAL BLOWER COIL UNITS BV SERIES VERTICAL BLOWER COIL UNITS Nominal Sizes 2 thru 10 Ton UNITED ELECTRIC COMPANY, L.P. 501 Part 2 — Products 2.01 EQUIPMENT A. Chances are you have a blower motor drawing too much current (too many amps) through your resistor. Disconnect power from the blower motor by shutting it off at the disconnect box to the unit or unplugging the power... 2. To locate a Mobile Air Conditioning Society member repair shop in your area. Any time I do a blower motor or have a blown fuse, I will always check the current draw just to be sure. … Get it as soon as Sat, Feb 27. The most convincing way to teach this concept is to have students figure it out for themselves using a centrifugal blower. This causes the motor RPM to increase and the motor amp draw to decrease. The amperage draw, of your Dakota or Durango's blower motor should be under 40 amps. This information will be listed on a name tag on the motor. If the motor… 3.9 out of 5 stars 7. HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 10 years ago. 1                              3.9 Amps                             3.8 Amps I normally wouldn’t bother to find out why or verify the repair through ohmmeter testing because the vehicle is 15 years old, and sometimes fuses just blow. Share this conversation. So overall your looking at say 30 Amps. Me ja kumppanimme säilytämme ja/tai käytämme tietoja laitteeltasi evästeiden ja vastaavien tekniikoiden avulla henkilökohtaisten mainosten ja sisällön näyttämiseen, mainosten ja sisällön mittaamiseen, yleisön näkemyksiin ja tuotekehitykseen. We measured the blower motor current on high, and it is drawing 19.5 amps on a 30 amp circuit. Get your answers by asking now. But you could also have a poor connection somewhere that gets disturbed whenever you replace the resistor, making it seem as though the resistor is at … A blower motor is drawing 8 amps. You would have done a better job had you, after replacement of the fuse, used an amp clamp to verify that the blower motor was not drawing an excessive amount of current. Thanks in advance!!? Melted connector at blower motor… Show More. Join Yahoo Answers and get 100 points today. At the bottom of this page is a video that’s very popular. Under the glove compartment door there is a soft panel that can be moved out of the way, exposing a brown wire which is the ground for the blower. Blower motor breakdown can be the result of anything from old age to failed bearings, high amp draw, electrical failure in the windings, dirt accumulation, and more. The greater the amperes the motor requires, the more powerful the motor. INDUCED DRAFT INSTRUCTIONS Bi-annually, oil the induced draft motor in the ports of the front and rear motor bearings with 4 drops each of SAE 20 motor oil. So, if the blower motor's amperage draw is above the amperage rating of its fuse, then it' s defective and needs to be replaced. It will just stop at say 9 volts. Find the Full Load Amp (FLA) rating of the blower motor. Automotive Blower Motor. The motor is turning fastest with the speed set to 4, but the motor is also working harder when recirculation is turned on, and therefore is drawing more current. 3. 0 0. You may remember from the original post, the fuse was number 25, which is a 25 amp fuse. Lisätietoja tietojesi käytöstä antavat Tietosuojakäytäntö ja Evästekäytäntö. There are a few things we can learn from this chart. Its low voltage that hurts the motors. 4                              19.8 Amps                           18.0 Amps So to follow up, I decided to go out and check the current draw of the blower motor on that Jetta. Posted on 28/04/2006 by Shaun. Blower motor AMP draw Hi All, This winter I decided to leave my blower on all the time. Basic instructions on how to troubleshoot the heater blower motor of a Saturn S-series. After all, that would be the correct way to test the system after fuse replacement and verify it’s operating properly. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. … Relevance. I wanted to see what difference the re-circ would make, if any, but also wanted to see what the difference in current draw would be amongst the different speed settings. Blower Motor Amp Draw. From low to high, It ranges from about 5a to somewhere near 15-20. Depending on the manufacturer and model, a blower motor resistor can go anywhere between $3 and $335 on CarParts.com. When amps go above the nameplate rating, heat begins to build up in the motor. If you’re a service professional and not a MACS member yet, you should be! Because in some cases, even though the blower motor runs, it's drawing too much amperage that it'll eventually blow out the HVAC fuse, burn out the blower motor resistor block, and/or the blower motor switch. How many watts does a gas furnace blower use? First, at the highest fan speed setting the motor is drawing under 20 amps, which is much less than the 25 amp rating of the fuse. Yahoo on nyt osa Verizon Mediaa. First, at the highest fan speed setting the motor is drawing under 20 amps, which is much less than the 25 amp rating of the fuse. Using a multimeter set on the Ohm scale, use the positive lead and test the black wire. As a former VW dealer tech, can I add a bit to your diagnosis? Qualifies for FLAT RATE SHIPPING* In Stock . Check for airflow restrictions in the duct, paying attention to debris on the evaporator or heater core. The talk now is to swap motor "A" for motor "C" and see if the amp problem follows the motor or stay with the pump. 3                              11.5 Amps                           10.8 Amps (The black wire is usually the negative.) On a GM or Chrysler, we would be alarmed that we would have this resistor fail again at this current. It reviews best practices for diagnosing common electrical problems. Tietoja laitteestasi ja internet-yhteydestä IP-osoitteesi mukaan lukien, Selaaminen ja hakutoiminnot Verizon Media -verkkosivustojen ja -sovellusten käytön aikana. You can still drive your car despite a faulty blower motor resistor. Click here to find out more about your car’s mobile A/C and engine cooling system. I only run my motors for about 1 minute or less to keep from over heating the motor. General: Factory-assembled, vertical, draw-thru type fan coil (Optional) Disconnect for combined heater and motor amperage. He also said my unit was showing 1 lb low on refrigerant.