Troubleshooting the ecm motor can be very simple if you just remember that it not just on or off. Hp color laserjet pro mfp m477 series troubleshooting hp. Nema mg1 specified motor design to meet what was known as class f, g or h insulation, and corona resistant wire was developed. These integrated motordrives are used in the air moving as well as the residential and commercial hvac industries, providing unmatched performance. Need help troubleshooting ecm motor hvac pro forums. This connector provides connection for ecm speed common pin 1, speed output pin 2, blower enable pin 4.
Motor reliability for inverter driven motors motor winding problems the motor winding insulation was changed to withstand the transient voltages and to prevent the corona discharges. Diesel engine control systems for caterpillar engines listed on the cover of this section. After the second failed attempt, the heater fan motor will remain on for up to three minutes which is normal and part of the logic of the heater. In my previous post, we covered checking the power and communication to the ecm motormodule. This manual will show you how to setup, program and troubleshoot ecm motors. The highest rated motor is the 120v motor at 34 flc.
Apr 18, 2012 the ecm motor is disassembled and all parts shown. Fan motor is changing speeds up and down and the fan thermostat is not switching back and forth. Genteq ecm motor diagnostic tool,for use with ecm motors. Times are approximate, it is more important to understand there are 2 attempts and the process can takes some time. I unhooked the 16 pin connector, and hooked up my tec mate to the motor. When that variable frequency drive vfd goes down, youre under pressure to get it back online. Having done motor work in the past, i pulled the cover off the airhandler to take a look at the blower motor. The control boards motor led was flashing, indicating it was telling the motor to run. Reapply power to the furnace and verify that the new motor control module is working properly.
This air conditioner is a little over 5 years old and i am already on my second problem. Perfectspeed 16pin motor troubleshooting manual climatemaster. Sep 14, 2012 troubleshooting the ecm motor can be very simple if you just remember that it not just on or off. Motor and motor control troubleshooting techniques. Upgraded ecms, sometimes called brushless permanent magnet bpm motors, contain magnets attached to the rotor and an electronics package to control the torque. If youve done numerous repairs on the transmission and replaced your automatic transmission fluid and youre still having problems, the ecm could be at the root of your problems. Ge developed the ecm electronically commutated motor a number of years ago. And its composed of hardware a pretty standard circuit board thats encoded with software a program that tells the car how to run. If the motor does not run, unplug the 16 pin wiring harness from the motor fig. Dont automatically assume the ecm motor has failed. Analysis of field returns show that quite often the ge ecm is misdiagnosed as faulty. The control controls a multiple speed ecm motor through the 6pin p3 connector. If the power source is battery voltage, the voltage regulator is located inside the hall sensor. First of all there are two components to an ecm motor the control module and the motor itself.
If a 120 vac cable is used with jumper and 277 vac is applied to the motor it will be destroyed. It corrects errors in the fax transmission from bad phone connections. The motor control is what sets the ecm apart from any other motor. Check resistance between motor windings l1l2, l1l3 and l2l3. Troubleshooting ecm motors check low voltage at the motor pins 1c, 12r of sixteen pin connector should always have 24vac voltage at the motor if not, check for voltage at circuit board. Additional engine systems, components and dynamics are addressed in other sections of this application and installation guide. I did get it working by providing the voltage to the green and white wires. Find support and troubleshooting info including software, drivers, and manuals for your. In this hvacr video we go over the troubleshooting of the ecm 3. Ecm control the control controls a multiple speed ecm motor through the 6pin p3 connector. Dont let this pressure make you take even longer to resolve the problem. Figure 1 typical motor efficiency f or a 50w motor shaded pole single phase the motor is a th capacitor three phase ecm an ecm is made up of two components. Instead, remember the vfd troubleshooting checkpoints.
Faulty signal ecm9150 throttle unit, internal fault. Ecm by regal beloit, ge commercial motors by regal. Prime ge ecm motor wiring diagram ecm motor troubleshooting part 1. Nov 07, 2014 the ecm doesnt control the transmission on a stick shift, so if youre having problems with your fivespeed, its the transmission. If the motor does not run, replace the motor module. Motor tests these tests are no different from taking resistance readings on a 3phase compressor motor. Refer to the fault code section of this document for proper troubleshooting.
Disconnect pl and plug it into the ecm motor simulator 3. A to perform the corresponding repair verification cycles and rechecks. Ecm motor shaft turns, but not smoothly if the shaft with blower wheel disconnected is. When a motor drive goes down, production often grinds to a halt. If the signal is correct at the low and high outputs, the power and ground will be good as well. Remove these two bolts from the motor and control assembly while holding the motor in a way that will prevent the motor or control from falling when the bolts are removed. The genteq brand has earned a reputation as an industry leader of ecm and axial flux motors for over 30 years.
Contact the paccar engine support call center for additional assistance in troubleshooting this issue, and for possible repair or replacement of the harness. Gather up any background material you may have on hand and then use your senses to inspect the site. Page 14 service facts trouble shooting kit troubleshooting ecm2 motor with troubleshooting circuit board and 4 wire test cable ecm2 troubleshooter kit order pub. This connector provides connection for ecm speed common pin 1, speed output pin 2, blower enable pin 4, cool. Variable speed operation is achieved by the use of an ecm electronically commutated motor motor. These videos are all part of our training series on hvacr service, installation, preventative maintenance, general knowledge, and tips.
Ge motor installation and maintenance instructions for nema 140 to 500 frame horizontal ac small industrial motors gei 56128h pdf genteq ecm electric motor installation guide for evergreen cm electric motors, previously branded ge ecm motors pdf 2014 genteq, 25 heil quaker blvd. Historic errors are stored in the nonvolatile memory of the ecm until they get cleared with the software. This is due in large part to the unavailability of effective troubleshooting tools for the ecm motor. The ecm motor construction and troubleshoot youtube. For the first problem i had called an hvac technician out. The other motors in the group phase is the 10hp 3phase motor, as indicated by the shaded area. When its necessary to disconnect the power from the hvac system, its always a good practice to verify that voltage has been disconnected, by using a voltmeter. Put 24 volts to pins 12 and 15 and 24 volt common to pins 1 and 3 at the motor fig. There are two types of programs price can load on to an ecm constant volume. Use wire ties to create a drip loop in the motor cables. Looking for genteq ecm motor diagnostic tool,for use with ecm motors 6pfg9. Hvac ecm variable speed blower motor troubleshooting. There is no input power to the motor controller high voltage input. Now if that is an x ecm motor it is a constant torque motor and not quite as smart.
Nema mg1 specified motor design to meet what was known as class f, g or h. Ge ecm motor wiring diagram free diagram for student. In this hvac ecm blower motor video, i go over the genteq x wiring. This motor tester is for use with only genteq ecm 2. There are basically 4 problems that will not allow the motor to run.
Tested old motor windings just for the hell of it before i installed the new motor. Theres a microprocessor that receives, interprets and reacts to. Ecm motor troubleshooting part 1 york central tech talk. Ecu ecm with code 9150 ecm9150 control valve inlet. Verify proper signals are being received by the motor control board and are being sent to the ecm2 motor by the 16 wire low voltage motor harness. Went ahead and installed new motor and unit ran fine. A true ecm motor is a constant cfm motor, meaning the motor uses the torque and rpm to move a constant, lets just say, 800 cfm on pin 1 and cfm on pin 2. Problems and premature failures often indicate input power system troubles, poor or deteriorating mechanical installations, or malfunctions in the driven machinery. Ecm standard speed controller all ecm speed controllers are manufactured by price. If an application requires high efficiency, variable speed, and low noise, a genteq. When the system attempts to kick the blower motor on, it jumps, but does not go to the run mode. Singlephase 120 or 208240 ac power is supplied to the motor module, which. S 120 vac hot n17 120 vac neutral eac electronic air cleaner 120 vac connection. End bell is painted black, and more than 10 wires in the 16 pin connector i found the ecm motor running backwards.
Ecm motor troubleshooting manual 3 ecm motor trobsootin ecm motor power cable 240277 vac black hot wire 240277 vac white neutral wire green earth ground wire note. If a motor has a 120 vac power cable with a jumper and 240277 vac is supplied to the motor it will be destroyed. The ecm is a computer, and features many of the same parts as the computer you have at home or at work. The rpm is used to evaluate vent system resistance. Called tech support and told them about the old motor.
Connectors are keyed to resist the cables being inserted. Ecm failure 4 painful symptoms of a bad ecm computer solo. The perfectspeed, 16pin, ecm variable speed motor easily integrates into noncommunicating. Ecm control outputs pin 1 speed common pin 4 blower enable pin 2 speed output pin 5 cool enable pin 3 motor cfm pin 6 r output male quick connect terminals. They are now being rebranded by the genteq company, a division of regalbeloit. Variable speed blower motor variable speed motor maintains specified air volume from 0 though 0. 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. The nec does not permit the use of motor nameplate fla to determine the conductor ampacity. The 16 pin plug has all the commands 24 volts to the motor. Theres a microprocessor that receives, interprets and reacts to sensor inputs as fast as they occur. Therefore, motor troubleshooting involves the entire system, not just the.
Commutated motor ecm by automated control systems via a 0 10v input signal common or manually via potentiometer set. Ecm motor troubleshooting part 2 york central tech talk. This connector provides connection for ecm speed common pin 1, speed output pin 2, blower enable pin 4, cool enable pin 5 and r output pin 6. The vehicles ecm wiring diagram is used to map the source of electrical errors within the ecm allowing individuals to correct common electrical. I was able to figure out that one must jump the 1 and 2 pins on the power connector to have it work properly on 120v with info i found on the net. It last 8 years before a fused trace on the control module and two drivers burnt. This evaluation is then used to determine the required rpm necessary to operate the inducer motor during mediumheat prepurge, the first minute of mediumheat mode, and lowheat mode. For xb models, the errors are grouped into diagnostic trouble codes, which help identifying the faulty device e. Faulty signal ecm9150 throttle unit, potentiometer 1.
If all of that was correct, now we need to see if the problem is in the motor, or in the module. Make sure you go through the diagnostic steps completely before replacing the motor. It is a brushless high efficiency dc motor now being manufactured by the regalbeloit corporation. Aug 16, 2017 ge ecm 2 3 motor wiring diagram trusted wiring diagrams ge ecm x motor wiring diagram for 8 arcnx co rh arcnx co genteq wiring diagrams 5kcp39bgr201bs ecm blower motor wiring diagram. Ecm motor control connector 16 wires for programming 4 wires for basic control. Ge ecm blower motor problems bruce forsberg home page.
This video is part of the heating and cooling series. The following is my encounter with a ge aka regal beloit ecm motor used in a trane air conditioner. Signal too low ecm9150 electronic throttle module etm, internal fault. For complete troubleshooting information on the variable. It can adjust the air flow depending on what the system is getting for feedback.
This allows the oem to vary the motors speed based on system inputs. Hello, i have a ge ecm motor in a blower i wish to use as a shopyard fan. Feb 17, 2018 these videos are all part of our training series on hvacr service, installation, preventative maintenance, general knowledge, and tips. Fan will not change speeds or is running at the wrong speed. Ge ecm blower motor problems the following is my encounter with a ge aka regal beloit ecm motor used in a trane air conditioner. Enginespecific information and data are available from a variety of sources. Please comment and ask for videos that you would like to see.
Ecm motor testing testing instruments baker distributing. This includes air conditioners, heat pumps, and furnaces. Motor connectors should oriented as to prevent the accumulation of moisture in the control. Any one of you whos ever had the misfortune of working on a carrier, bryant or trane furnace with one of these inducer motors knows what a sweet old bill these can be.
1135 1514 741 566 937 1070 720 1344 1430 941 771 1476 485 761 467 1049 1066 809 32 947 658 1213 1283 107 751 388 531 114 50 727 1152 760 1011 610 384 924 754 330 833 822 1347 1289 1009 496 1223