V-ZUG CookTop / FullFlex / DualFlex Swiss Induction Cooktop: Power module IGBT inverter transistor short circuit E03; appliance trips home breaker instantly when zone power is dialed up.
On V-ZUG cooktops with FullFlex multi-inductor surface matrix, OptiGlass ultra-hard diamond coating, and optical pan detection: Collector-Emitter thermal punch-through (<1 Ω) in one or more 1200V IGBT transistors or shorted bridge rectifier.
Measure C-E resistance of all IGBTs on aluminum heatsink with diode tester: low resistance (<100 Ω) confirms puncture. Replace blown IGBTs and gate drive resistors or swap power board. Wipe induction glass surface completely dry. Cut mains supply at breaker box for 60 seconds, restore and touch Key Lock for 5 seconds.
