If the tech who helped you replace the motor forgot to remove the drain that could be the issue. Learn how your comment data is processed. Yes learned it the hard way. Unit calls for a 1/2 horse. It worked. Got replacement motor new dual Capcitor put it on and it ran fine. This fan does not have a sealed long life motor. That way you can bench test all windings. Causing it to overheat and shut off. Variable Speed Furnace Fans A standard fan motor will typically use about 400 watts per hour while a variable-speed model will only use 75 watts per hour. Wrong rpm. Thanks, Jesse!. The motor is rated F.L.A 1.5 and it is drawing 2.4 amps. The initial start up of the fan will have an amperage spike … This is Turtle. Jesse Grandbois submitted this tech tip to help make it simple. Unit Part # 1248206C / Checked amp draw. Close. About 3 hours later get a call unit not cooling, return to find the motor is overheating and cutting off Waited for motor to cool down and restarted unit, amp draw was 2.8-3A. The heat pump condenser fan motor, like the air conditioner motor, is direct drive to a propeller blade which pulls the air through the condensing unit coils. Be sure your meter is setup to handle the voltage and Amps required before doing this or it is possible to burn up your meter and possibly be shocked. 1. 208-230, single phase, 1/3 Hp. Ended up getting money back for new motor. >> > >Your guess is as good as mine. Furnace blower motors and condensing fan motors will have the Amps labeled on a name tag on the motor. share. How to wire a condensing fan motor for 3 vs. 4 wires is a common question by new techs. I changed a condenser fan motor, nothing special about it. Look at a fan like the 30102082 , it provides a higher level of cooling in most applications and it has a long life water resistant motor. Unit 5 5/8" EconoMaster 220V . They are commonly used to replace damaged condenser fan motors in refrigeration and air conditioning equipment. Voltage can be 120 volts, 240 volts and 460 volts. Kindly tell the forum what the culprit was when you get this sorted out. TRADEPRO® - TP-C75-1SP2 Condenser Fan Motor 3/4 HP 208/230V 4.5 Amp 1075 RPM 1-Speed Item: TP-C75-1SP2 MFR: TP-C75-1SP2 The incoming voltage is 208 and the compressor is a 3 phase. You could flood a motor in one rainy day if you forget. What could be the reason for the over amperage? guess what, it is a Emerson, capacitor start, 1/2hp, 1100 rpm motor. It is susceptible to water, dust and other environmental issues like high ambient temperatures and high humidity. Archived. My meter show it draw 3.8amp. How to Check Amperage on Compressor and Fan Motor - YouTube I had a situation where a parts counter guy gave me the wrong fan blade. If you have a meter with an Amp Clamp it will simply need to be clamped around a wire that is pulling power, which are the wires coming off the motor and going to the pole, 120 volt, 220 volt. Check the amp draw against the manufacturer's fan performance data to verify the airflow that the fan is producing. Have someone coming over in the am to help troubleshoot. On the flip side, if you put a 12v @ 1 amp fan and the power source can only do 12v @ .40 amps it will cause problems. The other lead will go were the wire was pulled from, putting the meter in the circuit. Yes, the old fan motor and the new fan motor both called for 5uF of capacitance. $55.00 $ 55. Posted by 1 year ago. Description: Trane Xe 800 Condenser Fan Motor Wiring Help – Doityourself in Condenser Fan Motor Wiring Diagram, image size 453 X 600 px, and to view image details please click the image.. 4 ton Norodyne Split heat pump. 00. Showing 1-190 of 190 messages. When you install you can rest assured the motor you get doesn't have any burned or grounded windings. This information will be listed on a name tag on the motor. 6 1/2" Diameter Motors Single Phase . Fan pitch determines hp. Only one wire is used to measure the Amps while the motor is running. 8 Reason a Furnace Will Not Work Fall and Winter Maintenance Tips, Our Picks for the Best Mini Split Air Conditioner. > > >>>Cooling mode and Suction pressure runs at 100 psi and head pressure runs at >>>115 >>>psi and can't get a super heat reading. Checking a Condenser Fan Motor Amp draw. New comments cannot be posted and votes cannot be … What causes low amps on a condenser fan motor? report. save. Voltage can be 120 volts, 240 volts and 460 volts. Got replacement motor new dual Capcitor put it on and it ran fine. Take your multimeter and set it to ohms. hide. 22 comments. 4 wire connection. The fan pulls air in, through the condenser. This is a quick one on the difference between wiring universal condenser fan motors and why brown+white is the same wire as white. Liebert Condenser Motor . Thinking I got the wrong motor in there. Any Sub-Zero model listed below has a condenser fan motor that runs continuously. Check proper sizing. The old fan was .7 Amps and thew new one is 3.5-4.0. Amperage used to measure how much load an electrical device draws when in operation. Take the black multimeter standard test lead and touch the white wire with it. This information will be listed on a name tag on the motor. Always remove the plastic drain plug on rescue motors on whichever side faces down. Take caution when measuring Amps or Voltage as HVAC has high voltage running to units. (adsbygoogle = window.adsbygoogle || []).push({}); Your email address will not be published. Required fields are marked *. Condenser fans draw outside air into the condenser. For example, if a condensing fan motor has an Amp rating of 3 and after measuring the amps it is using 5 amps you know there is a problem and it needs to be fixed before the motor burns up. 1.5 ton goodman unit, voltage is 253. amp draw on compressor is around 12. fan motor is 1/6 hp 1075 rpm, exact replacement fla 1.3 i'm running 2.0 and up, motor is going into thermal overload psc capacitor is new, so is the contactor. Then I put it in >> >> I doubt changing the drier and the freon charge affected the >> fan motor amps. We have a winner! HVAC multi-meters are specifically designed and use often what are called Amp-Clamps, where a clamp is simply clamped around one of the wires the motor is pulling power from and it will display Amps. He left after about 15 minutes of cool and then about 15 minutes after that the outdoor fan turned off. Lesson learned. Any suggestions would be helpful. It started to overheat. guess what, it is a Emerson, capacitor start, 1/2hp, 1100 rpm motor. 6 1/2" Diameter Motors Three Phase New cap 7.5 mf. It has original fan motor. Your email address will not be published. May have to decrease pitch on fan blades as last resort. This is the most direct way that the variable-speed units save electricity, ... Read the amp draw of the blower motor. Whenever I change a motor or a compressor, I always change the capacitor as well. Condenser coil spotless. This one is a reality check on myself on trouble shooting here. Press question mark to learn the rest of the keyboard shortcuts. plate amp is 4.0. actual measured current draw … 60º-70º-80º Standard-Heatmaster-Ultra. I have a Amana 13 or 14 seer Heat Pump condenser Model # RHE-48-C2A / Cond. motor run hot. Right voltage. Blew two motors in a week nearly lost the account before I figured out what happened. Exactly what happened. So you could replace the motor while they are at the home, usually with no additional labor, or maybe have an emergency call in the future where you will now be charged labor in addition to … The condenser fan may run longer, but that has nothing to do with the motor current. Motor Name Plate Rated amps is 2.8 Checked voltage going to motor … Condenser fan amp draw. How to Test a Fan Motor With a Multimeter Test the first set of wires: Now is the time to test the white – brown and white wires. Thanks for the suggestions guys! Measure the Amps 5" MultiFit Motor . The white wire is called the run wire. Condenser fan motor Amp draw Hi guys! The condenser fan is a DC motor that is commanded 'on' and 'off' by sensors (high pressure cut-out switch, pressure cycling switch,etc.). High amp draw on condenser fan motor? Got a new unit at cost coming in tomorrow. Ding ding ding. I have a Amana 13 or 14 seer Heat Pump condenser Model # RHE-48-C2A / Cond. HVAC How-To, Tutorials, Reviews, Information and More, possible causes are the Start Run capacitors, Reasons Why A Mini Split Line Set Flare Will Leak Refrigerant. 4.7 out of 5 stars 161. Went out on thermals within minutes. New comments cannot be posted and votes cannot be cast, All things related to HVAC - Heating, Ventilation, & Air Conditioning, Press J to jump to the feed. Runs for 20 minutes, than kicks off on internal overload. The new motor has … They may have installed 12v @ .40 amps fan despite the source being capable of 12v @ 1 amp. The A/C is now functioning fully and properly, both from this change and from a good cleaning of the evaporator coils, condenser coils, blower fan, and drip pan and tube. I went to another system with the same condensing unit. View More My meter show it draw 3.8amp. plate amp is 4.0. actual measured current draw 3.8amp. Didn’t think about windings. Also be aware of moving parts such as the fan blades. Evaporator coil is spotless. Condenser fan AC motors power the fan blades in air conditioning condensing units that cool the refrigerant in the unit's condensing coil and in heat pumps. Automotive fans are rated at 13.5 volts, and the rating is after the motor is at operating RPM. Leeson 3 Phase 5" Cap-Can - Clam shell . Not impossible for the motor to be defective that can happen. Furnace blower motors and condensing fan motors Amp draw are checked to see if they are Over-Amping or in some cases Under-Amping. The motor could have a winding to winding short. Ended up buying a new unit. This thread is archived. It’s pouring down rain where I’m at. If is true the motor is drawing excessive current (again we have to rely he is being truthful), then it could be a sign the internal windings are being to fail. Btw it has been particularly stormy this week. Really at my wits end. 99 bucks for a basic supco. A correct multimeter needs to be used when measuring amps so as not to burn up the meter. Update: too many rpms on new motor. Using the Correct Multi-Meter 100% Upvoted. Silly question: If it ran fine for years, what happens that suddenly the fan needs to be modified? Multi-meters that don’t have a Amp-Clamp have to use the leads from the meter set in the circuit to measure Amps. None of the above affect the condenser fan's current draw. I replaced a psc condenser fan motor. Had a call today bad condenser fan motor. proper voltage rating? If a motor is drawing a very high amperage it is not unreasonable to advise a repair. MARS - Motors & Armatures 10728 1/4 hp 1075 rpm - 1 Speed 1.8 Amp Outdoor Condenser Fan Motor. The owner of this website, hvachowto.com, is a participant in the Amazon Services LLC Associates Program, Amazon.com.ca, Inc, Amazon EU Associates Programme an affiliate advertising program designed to provide a means for sites to earn commission income (advertising fees) by advertising and linking hvachowto.com to Amazon properties including, but not limited to, Amazon.com, Amazon.ca, Amazon.co.uk, Amazon.de, Amazon.se, Amazon EU Associates Programme, Amazon.it, Amazon.es, Amazon.fr endless.com, myhabit.com, smallparts.com, or amazonwireless.com Amazon.ca, Amazon.co.uk and other sites worldwide. Factory Authorized Parts™ - HC39GE237 Condenser Motor 1/4 HP 208/230 V 1.40 Amp 1100 RPM Item: HC39GE237 MFR: HC39GE237 TURTLE: 11/8/04 6:45 PM: This is Turtle. Will do. He left after about 15 minutes of cool and then about 15 minutes after that the outdoor fan turned off. It started to overheat. Get it as soon as Thu, Feb 18. Rated for 2 Amps, it draws 3.35 Amps. I went to another system with the same condensing unit. So it will be a little while longer before we can start back on it. What causes low amps on a condenser fan motor? Every electric motor has a set Amp and voltage rating that the motor should run at. So my head service tech at the company I work for came and changed it out for me. The motor was a 1/10 HP and the only motor I could find locally with the same RPM was a 1/2 HP. Thinking I got the wrong motor in there. I cleaned the condenser coil for what seemed like hours with no luck. This one is a reality check on myself on trouble shooting here. Data plate on Fan motor: 1/12 hp, 1050 RPM / 0.5 Amps. Ohms check Fan Motor: 90 ohms, 55 ohms, 144.6 ohms; This system was run for at least a few days with fan motor running backwards, but could have been run a lot longer than that - have no way of knowing how long it could have been run backwards. Proper capacitor? My fan motor had burned up. If you don’t have an AMP clamp but do have a meter that can handle the voltage and the Amps the motor is pulling it will need to be placed into the circuit. motor run hot. An electric motor will get very hot when it is over Amping, possible causes are the Start Run capacitors. Either one of them must be on the "fan" port and the other on the "common" port, along with one wire from the condenser. Wish I would have had your comment two days ago. Went back and read the name plate. It has original fan motor. It can be simply labeled Amp or in some cases FLA (Full Load Amps) which is the max the motor is rated to run at. Furnace blower motors and condensing fan motors Amp draw are checked to see if they are Over-Amping or in some cases Under-Amping. Wrong RPM/horse power will overheat a fan motor. I recently changed my Condenser Fan Motor as the other one locked up right before vacation. This is easy to do because the fan will only draw the amperage it needs. That one was 15 years old. all connections are good. For example, you have a 120 Volt 2 Amp furnace blower motor and need to measure the Amps. To avoid defective motors get a megohmmeter. proper voltage applied? I’m completely stumped but will heed your advice. Here is a picture gallery about condenser fan motor wiring diagram complete with the description of the image, please find the image you need. If a serial number is listed, only units prior to the serial number listed have a condenser fan motor that runs 100% of the time. Every electric motor has a set Amp and voltage rating that the motor should run at. Have another coworker coming to help troubleshoot in the am. If the motor cannot be cleaned, or it has been cleaned and still drawing high it may show an imminent failure. Old Motor was AO Smith 1/3 1075 rated for 1.6A Replaced with a Diversitech multi tap motor - wired for 1/3 hp. The heat pump condenser fan motor, on the other hand, sees run time during the winter because the heat pump motor needs to run to produce heat. Checking a Condenser Fan Motor Amp draw. This one […] When I was new I did a cfm replacement. Amperage is a measure of power being consumed by electrical device. When a motor Over-Amps it is drawing more current then it was designed for which will shorten its life and burn the motor up. >>>Condenser motor amp look good, and just runs like a charm. A rule of thumb is that on high speed most motors will draw 70-100% of the FLA if it is moving the required 400 CFM per ton on residential systems. Amps can range from .01 to 20 amps or more. Motor speed is relative to fan pitch. JuggerNaut 3 Phase . The bad original was a half horse motor, 1050 rpm, psc, 208-230 motor, totally enclosed, rated amp draw was 2.9. FREE Shipping by Amazon. A condensing fan motor 230 volts 1.9 Amps anyone know what might be going on? More Buying Choices $43.37 (16 used & new offers) A1404, 1/4HP 825RPM Condenser Fan … One of the wires for the 120 volts will need to be pulled out and placed on one lead. Took out a 1/4 horse and put in a 1/4 horse. They probably replaced an 825 rpm motor with a 1075. Low amperage 12v fan + strong 12v power souce = good. If the motor was rated for 1.8 amps, then that would mean the motor has a rating of 0.3HP (horsepower) which is a size I would expect for a small furnace. Condenser Fan Motor; Enclosure Type OAO; Power Rating 1/10 HP; Voltage Rating 115/208 to 230 Volt AC 1-Phase; Frequency Rating 60 Hertz; Motor FLA 5/2.5 Amp; Speed Rating 1050 RPM; Service Factor 1; NEMA Frame Size 42; Insulation Class A; Mounting Resilient Ring; Weight 8 Pound; Approval UL, CSA; Type Air Over Duty; Electrical Type Shaded Pole; Shaft … Checking the AMP Draw is important in HVAC for troubleshooting or testing for a potential problem. This site uses Akismet to reduce spam. My fan motor had burned up. So my head service tech at the company I work for came and changed it out for me. Right capacitor.
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