Rosieres ER22

Rosieres error code ER22 indicates: Rosières RVI / RPI Piano de Cuisson & Induction Cooktop: Touch control evaluation hardware fault ER22; capacitive sensing integrated circuit detects an internal analog front-end failure..

The primary root cause for Rosieres code ER22 is: On Rosières cooktops utilizing Piano de Cuisson induction generator, heavy-duty electromagnetic coils, and high-temperature thermal safety module: Conductive liquid leakage inside the chassis onto touch sensor PCB, broken capacitive spring pin, or static discharge damage..

To resolve error code ER22: Open hob housing. Inspect touch sensor PCB for liquid stains or corrosion. Clean contacts with isopropyl alcohol. Replace touch PCB if hardware damaged. Clear pan from hob surface, turn off electrical isolator for 60 seconds, turn back on and press Key Lock sensor for 5 seconds.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Rosieres code ER22 persists, the physical component causing On Rosières cooktops utilizing Piano de Cuisson induction generator, heavy-duty electromagnetic coils, and high-temperature thermal safety module: Conductive liquid leakage inside the chassis onto touch sensor PCB, broken capacitive spring pin, or static discharge damage. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test PCB Power Supply Rails & DC Bus Filter Capacitors across Across SMPS output electrolytic capacitors on low-voltage side (test bench verification). Expected nominal reading is Low-voltage rails: +5.0V DC (Logic), +12.0V DC (Relays), +3.3V DC (MCU). Relay coils: 200Ω–450Ω.. Tolerance: DC rail ripple must remain <50mV. Direct continuity (0Ω) across DC bus rails indicates dead short..

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.