Gas Heat ESCO Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Gas Heat ESCO Exam. Dive into flashcards and multiple-choice questions with hints and explanations. Get ready for your exam journey!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

A technician reads 0 ohms between the common and low speed wires on a 120 VAC furnace motor. What does this indicate?

Blower motor's normal operation
Normal winding resistance
Shorted winding
Winding continuity

The correct answer is: Shorted winding

When a technician reads 0 ohms between the common and low speed wires on a 120 VAC furnace motor, it indicates a shorted winding. This means that there is a direct connection (short circuit) between the common and low-speed windings of the motor. This condition can result in abnormal operation of the motor and may require repair or replacement to ensure proper functioning of the blower motor. The other options are incorrect because: - A: Just because the voltage is 0 ohms between the common and low-speed wires does not indicate normal operation of the blower motor. - B: This scenario does not relate to normal winding resistance, as 0 ohms signifies a shorted winding rather than typical resistance. - D: While winding continuity is essential for motor operation, a reading of 0 ohms does not signify winding continuity but rather a shorted winding.