Practice Test Geeks(CAR) Certified Appliance Recycler Practice Test
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Troubleshooting & Diagnostics Flashcards

7 cards from real CAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Troubleshooting & Diagnostics flashcards as text

  1. A refrigerator compressor runs continuously but the unit never reaches set temperature. What is the MOST likely cause?

    Answer: Refrigerant leak reducing system pressure

    A refrigerant leak lowers system pressure, reducing the refrigerant's ability to absorb heat, so the compressor runs constantly without achieving proper cooling.

  2. When diagnosing a washing machine that vibrates excessively during the spin cycle, which component should be inspected first?

    Answer: Drum bearing or shock absorbers

    Worn drum bearings or failed shock absorbers allow the drum to move erratically during high-speed spin, causing excessive vibration.

  3. A dryer heats normally but clothes remain damp after a full cycle. Which diagnostic step is MOST appropriate?

    Answer: Check and clean the exhaust vent for blockages

    A blocked exhaust vent traps moist air inside the drum, preventing evaporation and leaving clothes damp despite normal heat output.

  4. Which instrument is used to measure insulation resistance in a motor winding to detect breakdown?

    Answer: Megohmmeter (Megger)

    A megohmmeter applies high voltage to measure insulation resistance in megaohms, revealing deterioration or breakdown in motor windings.

  5. A dishwasher fills with water but the wash arms do not spray. What is the MOST likely fault?

    Answer: Blocked or clogged spray arm ports

    Clogged spray arm ports restrict water flow, preventing the rotation and spray action needed to clean dishes.

  6. An appliance technician notices a capacitor with a bulging top during inspection. What does this indicate?

    Answer: The capacitor has failed and must be replaced before recycling

    A bulging capacitor top is a clear sign of internal gas buildup from failure, meaning the component is defective and must be replaced or safely disposed of.

  7. When testing a refrigerator start relay, a rattling sound when shaken indicates what?

    Answer: The internal contact is broken and the relay has failed

    A rattling start relay contains a broken internal contact piece, meaning it can no longer engage the compressor start winding and must be replaced.