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1. What are the three main parts of an ECM?
2. True or False: ECM, BDC motor, and ICM all refer to the same type of motor.
3. Which ECM type is most commonly used for outdoor fans?
4. How are most ECMs powered?
5. True or False: Constant-torque ECMs will ramp up to maintain airflow when static pressure rises.
6. True or False: A voltage reading of 230 VAC between line and neutral means indicates that the motor is working perfectly.
7. If you read 24 VAC between common and the set speed tap terminal of a constant-torque ECM (in the designated operating mode) but the motor isn't running, what is the most probable issue?
8. When you have a constant-torque ECM, to which terminals on the OEM circuit board should the plug for pulse-width modulation (PWM) connect?
9. How many speed taps are on a 9-speed constant-torque ECM?
10. What is the communication input for a Genteq 16-pin constant-airflow motor?
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