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3D EQUIPMENT LAB · SIMULATED TRAINING

Walk up. Look closer. Test your theory.

Explore a condenser, select a component and use observations to decide what to test. A humming unit with a stopped fan can have more than one cause.

Generic PSC condenser · Schematic cutaway, not an exact manufacturer model. These capacitor and winding tests do not apply to ECM or inverter motors. This lab is session-only practice; it does not submit a graded score.

1. Explore the unit

Outdoor power ON
Loading the 3D equipment…

Drag to rotate · pinch or scroll to zoom · tap a part to select it. Sound is an optional approximation, not a diagnostic recording. The buttons below also work with a keyboard or when 3D is unavailable.

Fan: Not turningCompressor: running

2. Observe & test

SELECTED COMPONENT

Fan & motor

PSC motor · check rotation and isolated windings

Read troubleshooting causes →

Virtual observation only. Never insert a hand or object into an energized fan. This animation explores a symptom; it does not teach a physical hand-start procedure.

What you found

Arrive at the unit: the compressor is operating, but the outdoor fan is not turning.

Prepare for hands-on tests

  1. Isolate and lock out outdoor power
  2. Prove absence of voltage with a proved meter
  3. Discharge capacitor and verify residual voltage
3. RECONNECT & VERIFY

A fan that starts by itself is the goal.

Restore labeled connections and guards, clear the area, then check automatic start and stop. An assisted spin is an observation, not a repair.

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