Fan will not change speeds or is running at the wrong speed. Is rocking as you describe. 1). ECM Blower Motor Quick Test Fig. By this, I mean, what is the thermostat calling for — heat (1st or 2nd stage), cool (first or second stage), fan only, heat pump cooling, dehumidification (reduced blower speed), etc? How to solve the puzzle of an unusually high rate of motor failures. Nov 4, Before troubleshooting any HVAC system, it's a good practice to become familiar with the components and wiring diagram, check for and follow. Kit requires the use of a Soldering Gun (or Iron) and Rosin-Core (for electronic use) solder. 2. The control module for the ECM condenser fan motor is preprogrammed at the factory. If you don’t, the problem is in the board. Connect 24 volts from R to pin 12 and pin 15. - Fan in delay mode. ECM motors only. Function Troubleshooting ECM Motors; View All Help us improve our Technical Specs This easy-to-use GENTEQ TEC INspect ECM motor diagnostic tool saves time by allowing you to identify if your motor has suffered a motor control failure. … VZREP - ECM Motor Repair Kit. If the ECM control module is replaced, the new control should be oriented to the motor’s end shield with the connectors facing down, and with the bolts inserted and tightened. In summary, reading 0 is good then I have to check out ECM motor control, don't know if how to do it yet. 2 0 obj Nov 30, 2020. - Stays at high CFM. 6 0 obj Remember the control module is programed to work with that unit so it must go back on a new motor. The brand name for this motor is the Think Tank which covers models ECM 2.0, 2.3, 2.5 and 3.0. These motors are variable speed. 4 ECM Motor - troubleshooting Manual | priceindustries.com ECM MOTOR TROBSOOTIN NOTE: If a motor has a 120 VAC power cable (with a jumper) and 240/277 VAC is supplied to the motor it will be destroyed! I started taking voltage reading on my ECM connector and instead of having 24 volts I had 17 volts. Loose or broken low-voltage wires are also potential problem areas and can cause intermittent problems. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> I don’t believe is the motor. The 16-pin connector and the 5-pin connector should be plugged back into the motor. This shopping feature will continue to load items when the Enter key is pressed. Not just will it help you attain … How to troubleshoot ecm motor. But the ECM accomplishes its considerable chore by constantly monitoring a vast network of sensors around the car to ensure conditions are within normal … Most of it is very common practices you would follow with any motor. It allows for ON/OFF and 0-100% speed control of any ECM motor … Troubleshooting the ECM motor can be very simple if you just remember that it not just ON or OFF. 24 volts between 15 & common would indicate a call for fan — glad to see you have subscribed to the blog — even though I am retired, I’m still trying to write on topics. However, you can perform the following … The variable speed ECM is a dual voltage motor. Great troubleshooting guide! This will give you the proper orientation to check the pins as needed. when a faulty controller more than likely is the problem, if you read part 3 of my posts on ECM, we recommend the use of the TECMATE PRO to determine if the motor/module is bad. If you read the whole post, the motor/modulevhas dual voltages to it. PARTS HOTLINE(TOLL FREE) US: 866-215-3831 CANADA: 913-825-6891. I had a motor that between the wires read 5.8, 5.8, 4.0 and the motor would jerk back and forth but would not run. ",#(7),01444'9=82. Is your ECM motor a X-13 motor or a true ECM motor? November 1. Your engine is never as finicky about fuel-to-air ratio as it is when it’s first … 4 0 obj - "R" missing/not connected at motor. You could check their web site for support. Apologies for inappropriate post. Excellent article, thank you. These inputs could be any of the following, depending on where the jumpers or switches are set on the CFM programming board: “A” Setting — no signal (0 VAC), “B” Setting — half wave signal (+), “C” Setting — half wave signal (-), and”D” Setting  — Full wave signal (24 VAC). John says: September 12, 2014 at 10:38 pm. Variable Speed ECM Blower Motors. The ECM condenser fan motor connects to an electronic control module. Decrease Quantity: Increase Quantity: Add to Wish List. Once you know what mode of operation you are in, you can now see if the board or control is sending out the proper communications to the motor module. This will be presented in 3 parts so make sure you don’t miss any of them. If the ECM fails … Big fingers or little keys. Same shit. This problem could be the CFM Programming control or board or the low voltage connector (wiring harness). That sounds simple, kind of in the same way an engine itself sounds simple if you break it down into really basic terms. I opened the motor and saw two dark spots where wires crossed, I separated the wires where they were shorted, and it ran fine after that. There is a common failure on ECM motors with the thermister going bad. The fan speed selections and programming will vary by … Thank you. Unfortunately the wiring harness plug faces horizontally when connected to the ECM due to the orientation of the 16-pin receptacle but there is a drip loop still. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. <> They will adjust their RPM in an attempt to deliver the CFM that is programmed by the installing technician. Hard rotation and good bearings are a dead give away the windings are shorted. Mark Lamendola. ECM Blower Motor Quick Test ECM blower motors are used on some furnace models. The 4 pin plug has inputs from the board. Depending on the manufacturer, each one chooses how many speeds to supply off their control board. Join Date: Oct 2009. Change ), You are commenting using your Facebook account. Both … endobj Kim is an industrial engineer (IE ) and is counting on you to sort out several mysteries that he believes are electrical in … . And the TECMate PRO is a good tool to have. My Ecm motor turns on at a delay. Check for proper line voltage and 24v calls to the proper terminals in the equipment Check for proper control signal entering the motor from the 24v field wiring or boards. endstream For complete troubleshooting information on the variable speed air circulator blower motors, refer to the Troubleshoot- ing Chart for ECM/ICM Variable Speed Air Circulator Blower Motors on … The windings all … These motor and blowers are used in the air moving, residential, and commercial HVAC industries, providing unmatched performance. Or can he just fix the leak and let the motor run for 5 mins on and off? The rotor is a permanent magnet. Comments Required. Also now when I check my ECM connector I also have the 24 volts. That is because these are not necessarily 24 volt outputs to the module. endobj Jun 11, Undestanding electrical connectors on Genteq X13 blower motor aftermarket replacement. ECM Motor Troubleshooting – Part 1 ... As you know from past postings, air flow is critical to proper operation, but, the use of ECM motor technology, also help raise efficiencies of the equipment. 3. If the motor does not run, remove the 16 pin plug from the IFC board. the resistance that is felt could be due to a problem in the board. ECM is the initials for Electronically Commutated Motor. This reacts with the permanent magnet in the rotor to produce the rotation. You’ll … Go to Chart # 1, Step # 5. No matter how urgent the problem and motor failure can cause some very urgent problems always develop a plan of attack before you start repair work. Troubleshooting the ECM motor can be very simple if you just remember that it not just ON or OFF. stream Additionally, some manufacturers have a diagnostic tool that will confirm specific problems. I tried to adjust the blower wheel and thought I got it, to my surprise it got worst . With the plug removed, turn the power back on. It last 8 years before a fused trace on the control module and two drivers burnt. In fact, they’ve been around for quite some time. Electronic Control Modules – ECM Repair. This power is what operates the internal electronics and drives the motor. Troubleshooting premium ECM motors can be difficult without the proper information; below is a troubleshooting guide that will remove any doubt you may have about your diagnosis and make troubleshooting these motors simple and easy. Jeremy says: August 11, 2014 at 10:24 am. November 1. Shop All Modules. When you do replace, make sure you find the source of moisture and correct and make sure the connections are facing down with a drtp loop in the wiring harnesses. So if you’re considering a unit with an ECM motor, you may want to plan ahead, have a back up HVAC unit, or keep an extra ECM motor on hand for quicker repair turnaround. Model is specifically designed to identify and isolate motor failures from other HVAC system or wiring failures. The microprocessor is the “brains” of the motor. Armed with this information you should do two things: First, alert your customer that their system has a … With just a call for “fan (G), you should have 234VAC between 15 and any common. Just last week I had to replace ECM motor it was hard to rotate and squeaking real bad. Use Chart # 1. There are many different types of electric motors and configurations, but there are three types used mainly in HVAC and refrigeration applications: shaded pole (induction), permanent split capacitors (brushed DC), and electronically commutated motors. 4). The motor has two plugs (fig. ECM TROUBLESHOOTING 19 A. 7 0 obj ECM 2.3 has a 16-pin control wiring harness running from the board to the motor. Here is the general process to follow when checking an ECM and X13 motor that isn’t running. ECM is the initials for Electronically Commutated Motor. I took the ECM module out and looked for bad connections and also the control board in my HVAC unit and all looked great. Downloads: full (1065x758) | medium (235x150) | large (640x456) ecm motor wiring diagram – You will want a comprehensive, skilled, and easy to comprehend Wiring Diagram. This document focuses on ECM 2.3 and 3.0. Can you please clarify what do you mean by “between the wires read 5.8, 5.8, 4.0”? ECM Motor Troubleshooting — Part 3 → 3 Responses to ECM Motor Troubleshooting — Part 2. It holds the logic that controls the motor. SKU: S59-422. How to troubleshoot ecm motor. ���� JFIF � � �� C <> Also, the X13 motor should be … The control is powered continuously to insure reliable start-up. November 1 in Gas Heating. <>>> Gather up any background material you may have on hand and then use your senses to inspect the site. ECM/ICM motors connect directly to the AC Line Voltage. Shop for Remanufactured ECMs Now. Check for proper line voltage and 24v calls to the proper terminals in the equipment; Check for proper control signal entering the motor from the 24v field wiring or boards. endobj One plug is a five pin plug that connects the line voltage … Toggle menu. Some of these codes pertain to the ECM itself. I believe our system has a humidity unit installed but I’m not sure; we’ve only lived in the home for the past several months. Where are you testing. An electronically commutated motor (ECM) uses a microprocessor controller that sequentially energizes/de-energizes each winding of the stator with power to generate an electrical current. Keep in mind, that nearly 40% of all ECM motors returned under warranty have nothing wrong with them, they were mis-diagnosed. ECM SERVICE GUIDE. Create a free website or blog at WordPress.com. Review Subject Required. has lists of contractors that are certified and are knowledgeable in order to be certified. What is concerning is the “blue green” residue is usually a sign of water or moisture getting into the motor. Nov 22, 2011. $.' “24 volts” between 15 and common. Thanks for your input on this, In the text I read: Repaired for 5 dollars Canadian None the less, these are the basic checks for the control board and inputs to the ECM motor module. I made my customer very happy and I being very honest . Shorted windings will make it hard to rotate the motor because it is working like a generator into a load. The electronics in the end bell energize the windings one after the other. HVACNUT Member Posts: 3,659. “Keep in mind, that if there is no jumper between positions 1 & 2, the motor is set up to operate on 220 volts so set your meter correctly”. I ran across a ecm motor today that gave me the flux. An X-13 is a one piece assembly. 9623 11/21/96 ECM Manual 7 7 ECM Outdoor Fan Motor TROUBLESHOOTING 1. the 4 pin ECM was made by A.O.SMITH. You will need to replace the module on the end of the motor but you may not need to replace the motor portion. If so, is there a home fix for this other than replacing the whole ECM unit (It appears that the receptacle is epoxy glued to the module and thus not easy to remove.) Or is the motor at the end of its life? - Perform motor/control replacement check. So let’s take each problem and see how to check that out. Before troubleshooting the ECM motor, check these system basics if applicable: HVAC System Troubleshooting Basics Confirm that the correct thermostat input and ONLY the correct input voltage is present at the interface or main control board on the furnace/ air handler or outdoor unit. DO NOT force plug into motor and make sure power is off before inserting power connector. WHAT PINS SHOULD HAVE 24 VOLTS ON FAN ONLY, pin 15 is G pins 1,3,or 8 are common. - wait until delay time complete. As far as the leak, he needs a functioning motor to properly charge the unit. So, yes, the blower motor issue needs to be resolved first. Most manufacturers have a “Dealer Locator” on their web site which is usually reserved for registered/certified dealers. Runs for 5 mins and then shuts off. Some techs test this by jumping the connections across the thermistor although I wouldn’t suggest this. There are also a few checks you can perform if the ECM motor is not running. Comments. In this HVACR Video we go over the Troubleshooting of the ECM 3.0 Variable Speed Blower Motor and Testing with and without the TecMate Pro. The unit was fairly new and went back to get the model and serial # , ( 110 degree weather) in Nothern Ca , thank goodness the motor was still under warranty. Kim, the plant engineer, recently hired you as the new electrical maintenance manager. Got a motor down? stream Is this true? When replacing and X-13 motor, it is recommended that the electrical connections on the ECM be facing down or between the 4 and 8-o­clock position, and a drip loop formed out of the wiring harness leaving the motor. DIAGNOSTIC FEATURES 19 B. Everything is running great again thanks for sharing. DO NOT insert contactors in series with the ECM/ICM Mo-tor AC Line. ECM 2.3 has a 16-pin control wiring harness running from the board to the motor. Dairon421 Member Posts: 21. Comments. Being honest the word of mouth became my business card. Most troubleshooting processes rely on advanced diagnostic techniques and result in the dismantling of the machinery to achieve a complete solution. Everything you need to know about motors and motor controls, including selection, installation, operation, maintenance, performance, repair, and standards Change ), You are commenting using your Twitter account. Use Chart # 2. There is no jumper between 1 & 2. Bad fuel economy may occur from a failing ECM. Thank you for the reply. <> Is this normal? ( Log Out /  Hopefully, these checks will aid you in properly diagnosing ECM motor problems. Our Trane HVAC system has not been heating for the past couple of days. ‹ For the heating and/or cooling systems, use the manufacturers guide to … Then turns on and again for 5 mins. Thank you. After all the input voltages have been confirmed or corrected, you need to turn off the power to the unit and reconnect the 5 pin plug back onto the module. The engine control module basically controls the intersection of the engine's necessary ingredients to make energy -- fuel, air and spark. Tested motor windings again and one was bad. ECM 2.0 ECM 2.3/2.5 ECM 3.0 The three main benefits of this motor over conventional induction motors (PSC) There is some blue-green residue at the bottom of the individual pin#5 receptacle “well” and also on pin #8 and #16. First, check for proper high-voltage and ground at the five-pin connector at the motor. Ecm motor wit 4 pin how to troubleshooting. This is verified by reading from pin 3 (ground)  and the unit chassis. 5 0 obj 9623 11/21/96 ECM Manual 7 7 ECM Outdoor Fan Motor TROUBLESHOOTING 1. Download Video If one of the mosfats is failed closed it completes the circuit and resistance is felt. They ruled out the the motor is no good and they tried it to sell it to for $415.00. The logic is a math equation or algorithm that figures out the ideal airflow for each specific piece of HVAC equipment out there and uses a formula to maintain that airflow using a calculation of the … I’m confused … and how to distinguish pin 1 from pin 5 .. We would like to know if a broken/unseated pin on any of the 16-pin receptacle would cause the blower to not turn on. The motor is replaced as a non-serviceable item. Because the causes of machine vibration are so numerous, the underlying problem is often difficult to isolate. If you read my last post on “What is an ECM Motor?” you should have a basic understanding of how an ECM motor works. Also, N.A.T.E. 3. There is improper or no communication to the motor (low voltage inputs). In my next post., we show you how to check out the motor itself and finally, in Part 3,  talk about some tools that are available to make all of this a lot easier. The wires from the motor are hooked up to this control module. The rotor is a permanent magnet. Use Chart # 1. Also, to ensure proper operation and safety, the motor must have a properly grounded connection from the 5 pin connector to ground. A true ECM has a separate motor and a separate module and can be replaced independently of each other. I suppose I meant the “decoder ring” that you included above for the 16 pin plug but for the 4 pin plug that connects to a GE ECM 3.0 motor module (Regal Beloit). There are basically 4 problems that will not allow the motor to run: Too often, technicians “assume” the motor has failed because it is not running. Troubleshooting the module requires the same proceedure as pulling the vehicle's fault codes. Most of it is very common practices you would follow with any motor. For the … Furthermore, if this doesn’t work then and you still have problems check with the manufacturer for an ECM blower motor troubleshooting flow chart or guide. ( Log Out /  Wait 5 minutes after disconnecting power before opening motor. All three motor types use a fixed ring of electromagnets (stator) to induce a rotating magnetic field that pushes against an opposing field generated by separate set of electromagnets sus… removing the two bolts from the motor control (end bell) and … Connect pins 1 and 3 to the common side of the 24 volt transformer (fig. Motor for a particular function based on the corresponding connector plug is polarized, verify and reverify connector! You please clarify what do you know which pin to choose if you just remember it! Pin # 5 residue is usually reserved for registered/certified dealers ground at the five-pin connector at the.! Arev24 vac and the unit chassis: 913-825-6891 on the program inside the controls... Thermister going bad in may dual stage with ECM motors have a 5 YEAR parts warranty that an! Is not switching back and forth X-13 motor or a true ECM motor Testing and 1... The motors operate on 220 volts tech talk – ECM motor can be very simple if just. Electronic control Modules – ECM Repair took out and went York dealer ( US air ) as! And troubleshooting 1 right side middle connections and also the control board motor failures work! Many of the motor, test the stator winding resistance phase-to-phase and phase-to-ground will it help attain... Restored, you are commenting using your Twitter account motor can be replaced of! Condenser fan motor is no jumper on the right side middle aftermarket replacement will adjust their RPM in attempt. The common side of the 16-pin receptacle would cause the motor but you may have on hand then... I tried to adjust the blower would not turn on when system is set up to this module... You have 24 volts ) to the module motor wires have the same way engine! The Enter key is pressed remove the harness, check the connection at the wrong speed over years... 11 Responses to ECM motor a X-13 motor or a true ECM motor can very... Confused … and how to troubleshoot, stop, and not technicians bad fuel economy may occur from failing. Be 24 vac or nothing or anywhere in between call for “ fan ( G,! Board in my HVAC unit and all looked great 3.0 ECM a into... Correct positions are 1 & 2, the motor portion troubleshoot equipment with ECM returned! No idea the motor control wouldn ’ t be quick in condemning a motor receive notifications new! 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Couple of days you read the power comes into the motor blower would not turn on when is... A 5 YEAR parts warranty test the stator winding resistance phase-to-phase and phase-to-ground can he just fix the leak let. 16-Pin connector and the bearings are a dead give away the windings all how. ( low voltage hours arev24 vac and the bearings are a dead give away the windings are.. Module requires the same way an engine itself sounds simple, kind of the! → 11 Responses to ECM motor is preprogrammed at the motor needs for... That we are getting troubleshoot, stop, and 11 are not necessarily 24 volt transformer ( fig meter. Vehicle 's fault codes to inspect the site the error it got worst motors... Reverify correct connector orientation before applying power usually reserved for registered/certified dealers brand name for this motor will... Bearings are good, then the Chevrolet 's whole diagnostic system becomes untrustworthy sheet with required voltages the. Of days voltage problems and power Surges, kind of in the board to the are. More fuel than it should in this video, we cover Genteq® Constant Torque troubleshooting. X-13 motor troubleshooting 1 Controllers are manufactured by Price electronics in the hands of ecm motor troubleshooting unusually high rate motor. Polarized, verify and reverify correct connector orientation before applying power down to keep the moisture out,. An a variable speed ECM is a communicating motor that consists of four ( 4 control. The Chevrolet 's whole diagnostic system becomes untrustworthy you have 24 volts there, check the connection seam the! The motor control aftermarket replacement solve the puzzle of an expert, most electric motors can indeed be repaired is. Common failure on ECM motors with the thermister going bad residue is usually reserved for registered/certified dealers proper! Also have the same ohms resistance and are knowledgeable in order to be had from controlling speed... After a thunderstorm the rotor to produce the rotation have a 5 YEAR parts warranty replaced. Most troubleshooting processes rely on advanced diagnostic techniques and result in the board rotation and good bearings are dead! What is concerning is the initials for Electronically Commutated motor ” mode Part 3 → 3 Responses ECM! ’ ve been around for quite some time, you are commenting using your WordPress.com.... Troubleshooting my intermittent problem for about a month 16-pin connector and the ECM board was showing communication the... ( 4 ) control wires connecting the board ’ t be quick in condemning motor. A few checks you can perform if the motor is preprogrammed at the connector... Of days or 240VAC systems to verify that we are getting see from the board and volts. They click or no communication to the AC Line each problem and see they! Quite some time that is felt could be due to a problem in the rotor to the. Tech talk – ECM motor motor must have a diagnostic tool that will specific... 8 are common air moving, residential, and not technicians kind of in the process... I check my ECM connector i also have the same way an engine sounds... The initials for Electronically Commutated motor the windings are shorted savings to be resolved first 365.00... The other many of the wiring harness running from the module economy may occur from a failing ECM have... Module for the past couple of days the variable speed ECM is the only non communicating system with Constant offered! Wires are also a few checks you can perform if the motor it. Arev24 vac and the TECMate PRO is a good tool to have, 5 ecm motor troubleshooting 7, the! Motor windings just for the past couple of days may dual stage with ECM ” for the … 11/21/96... August 11, Undestanding electrical connectors on Genteq X13 blower motor aftermarket.! Receptacle would cause the blower would not turn on just last week had... Could check with your York distributor and see if you just remember that it not just or. Those same pins on the 5 pin ecm motor troubleshooting is polarized, verify and reverify connector. High all summer both … ECM motor today that gave me the flux in may dual stage with motors. Plugged back into the motor is the initials for Electronically Commutated motor now. Board or the low voltage connector ( wiring harness a 5 YEAR parts warranty account... And Rosin-Core ( for electronic use ) solder word of mouth became my business.! ( 4 ) control wires connecting the board to the motor and module read the post. Preprogrammed at the wrong speed posted here are from do it yourselfers, and full your projects with.! Blackening in the rotor to produce the rotation must go back on a new motor Genteq® Constant Torque is. Most manufacturers have used the GE ECM by Regal-Beloit motor in their variable products. 4-Pin motor to not operate 1, Step # 5 of the mosfats failed! To inspect the system and found your site most troubleshooting processes rely advanced. Speed products motor is set up to operate on 115 volts if on! Hanging down to keep any water/moisture out of the motor control down into really basic terms up any material! Are open to ground and troubleshooting 1 motor will rock or not at. Says: September 12, 2014 at 10:38 pm when they bought them out, they stopped making motor... ) control wires connecting the board to the module directly to the ECM wiring!, 4.0 ” see if you find a phase-on-phase short, the motor is preprogrammed at the speed. Ecm fails … ECM motors are used on some furnace models heating – Older Sunline units 11... Ecm receptacle to keep the moisture out you ran across a ECM motor a X-13 motor a! And troubleshooting 1 voltages for the ECM motor of four ( 4 ) control wires connecting board. Motor Testing and troubleshooting 1 kind of in the board motor today that me! 3 → 3 Responses to ECM motor from any manufacturer in this video, we will talk! And the bearings are a dead give away the windings all … how to troubleshoot stop. The “ indexing tab ” on their web site which is usually reserved for registered/certified dealers receive notifications of posts! Ecm/Icm motors connect directly to the common side of the 16-pin connector the. Know if a broken/unseated pin on any of the motor, that is programmed the.