The webinar Diagnosing xEVs: Inside High Voltage A/C Compressor, hosted by Dave Giles and Jérôme Bergeron-Carpentier from Consulab, tears down the high-voltage heart of EV and hybrid climate control—showing why these beltless, inverter-driven units demand a whole new level of diagnostic precision in modern shops.

Relevant Training Systems

• EV High-Voltage Safety Training System (EV-400) — A compact BEV simulator with fault insertion for practicing safe high-voltage procedures, isolation testing, milliohm bond checks, and compressor-side diagnostics—including LOI scenarios on components like the A/C compressor. https://daktic.com/product/ev-high-voltage-safety-training-system
• Tesla Model 3 Cutaway EV Training System (EV-601-TS) — A sectioned real Tesla Model 3 displaying full high-voltage architecture and components, with specific exercises for A/C compressor testing and loss of isolation (LOI) checks on the component side in a safe, visible setup. https://daktic.com/product/tesla-model-3-cutaway-ev-training-system
• Hybrid Scroll Type A/C Compressor Cutaway Trainer — A cutaway of an electrically driven hybrid scroll compressor that reveals internal scroll operation, three-phase motor, and electronics—ideal for visualizing the construction and faults discussed in high-voltage A/C systems. https://daktic.com/product/hybrid-scroll-type-a-c-compressor-cutaway-trainer

The session pulls no punches on why high-voltage A/C compressors are a growing pain point: no belts, no clutches, just a three-phase motor spinning the scroll under inverter control, with the whole unit sealed tight and cooled by refrigerant on the low side. Presenters run a live tear-down, exposing the stator, rotor, inverter board, and pressure chambers, then walk through real faults—like bearing wear or isolation loss from wrong oil—that trigger codes, default modes, and stranded vehicles. Safety stays front and center: verifying discharge of residual capacitor voltage (sometimes 129V lingering), using milliohm testers for ground bonds under 2 mΩ, and isolation testers at the right voltage to avoid frying electronics. With EVs and hybrids cranking up A/C demands for battery thermal management and cabin comfort, these compressors aren’t optional anymore—they’re standard, and botched repairs mean comebacks or worse. Trainers that let students dissect faults, test isolation, and see internals without live-vehicle risks build the exact skills shops need as high-voltage climate systems become everyday work.

Ready to build an industry-driven training program that gets students inside high-voltage A/C compressor diagnostics without the hazards? Reach out to a DAKTIC representative at [email protected] to discuss tailored solutions.