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Mar
To check the windings of a motor for an open or a short youll need to measure the ohms. Specifications and test procedures vary between different manufacturers.
Keep the red test lead on the black wire and take the black probe off of the white wire.
How to test a blower motor. Heres what to do. Detach the blower motor from its connector. Unscrew all the screws on the blower motor.
Place them in small container. Locate the retainer clip in the center of the blower wheel. Disconnect it from the motor shaft and set aside.
Clean out any debris from. Testing the blower motor of your home HVAC system If debris is not the problem use your multimeter to check for voltage in the contacts motor. The resistance ohms of the windings should be tested.
If its a zero reading then this indicates that your winding has a shortage. Set the tool to read ohms a measurement of resistance and connect one of its probes to the common output terminal of the resistor. Use the other probe to measure the resistance between the output terminal and each of the resistors input terminals.
Measure the resistance between one pair of terminals at a time. In this video I explain and test a bad blower motor resistor. With a simple multi meter you can also test your blower motor to verify you blower motor probl.
To check the windings of a motor for an open or a short youll need to measure the ohms. If the unit has a 120V motor it will most likely have three or four colored wires black red yellow and blue are common a white wire and two brown wires. Do a resistance check between the white wire and each of the colored wires.
Is your furnace blower motor not working and there is no air coming out of your vents. Perhaps your blower motor has burnt out and you need a new one. Test the fourth set of wires.
Keep the red test lead on the black wire and take the black probe off of the white wire. Place the black probe on the white wire. It is preferable to do this test without the moving blade.
In this HVACR Video we go over the Troubleshooting of the ECM 30 Variable Speed Blower Motor and Testing with and without the TecMate Pro. I show you where. Testing Blower Motor Amperage and VoltageDisclaimerThis video is not meant to be a definitive how toAlways consult a professional repair manual before star.
The next step is to manually apply power and Ground to the blower motor itself. For this test go to. Applying Power And Ground To The Blower Motor.
Your test result resulted in a calculation of 40 Amps or more. This test result tells you that the blower motor on your 1997-1999 Dodge Dakota is defective and needs to be replaced. In high speed the resistor is bypassed and power is fed to the motor directly from the switch.
Above is a typical blower resistor. Specifications and test procedures vary between different manufacturers. Place one lead of the Ohmmeter on terminal 1 of the resistor.
Place the other lead on terminal 2 and check against specifications. If this circuit is open showing infinity on the Ohmmeter the blower resistor must be replaced. Applying Battery Power And Ground To The Blower Motor Testing the blower motor is as simple as applying battery power and Ground to the blower motor terminals.
Depending on the exact location of the blower motor on your specific 38 liter equipped GM vehicle you can test it on the car or you may have to remove it for ease of access. How to test and replace a car blower motor thats not working. Blower motor location removal and replacementYou can purchase the b.
Check the rotation of the fan. Bump the fan by depressing the blower compartment safety switch. Check that the blower is rotating in the right direction that it is tight on the shaft and that there is no restriction or grinding as the motor turns.
Testing The Blower Motors Resistor In this first test were gonna check the resistance of the resistor inside the blower motors power transistor with a multimeter in Ohms Ω mode. If the resistance IS NOT within specification we can conclude your Honda Civics blower motor power transistor is bad and needs to replaced.