Bompani A20

Bompani error code A20 indicates: Bompani AquaStop Fully Integrated & Freestanding Eco-Wash Dishwasher: Operational diagnostic fault code A20 signaled by internal electronics. Main electronic power PCB non-volatile EEPROM memory appliance parameter corruption.

The primary root cause for Bompani code A20 is: On Bompani kitchen suites engineered with synchronous wash pump with run capacitor, 1800W flow-through heater (26-28 Ω), pneumatic pressure switch, optical turbidity sensor, and AquaStop tray switch: Mains brownout spike during cycle write, defective memory IC, or unprogrammed replacement board Multimeter diagnostic parameter: +5.0V DC regulated logic power rail stable ±1.5%; EEPROM bus clock frequency 100 kHz or 400 kHz I2C..

To resolve error code A20: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: measure 5.0V DC supply rail on power board and execute factory reset service program to reload defaults. Inspect spade lugs for signs of heat discoloration. Replace defective component, restore electrical supply, and perform system reset: Switch appliance off. Press and hold Start/Reset button for 4 seconds while powering on, release when LED flashes rapidly, clearing saved cycle errors.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Bompani code A20 persists, the physical component causing On Bompani kitchen suites engineered with synchronous wash pump with run capacitor, 1800W flow-through heater (26-28 Ω), pneumatic pressure switch, optical turbidity sensor, and AquaStop tray switch: Mains brownout spike during cycle write, defective memory IC, or unprogrammed replacement board Multimeter diagnostic parameter: +5.0V DC regulated logic power rail stable ±1.5%; EEPROM bus clock frequency 100 kHz or 400 kHz I2C. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test Mechanical Pressure Switch Contacts / Inductive Frequency Sensor across Across switch spade contacts with harness unplugged; electronic output: 40Hz–50Hz frequency signal. Expected nominal reading is Mechanical: Continuity 0.0Ω–0.2Ω (Empty: 11-12, Full: 11-14). Electronic: 20Ω–45Ω coil resistance.. Tolerance: Mechanical switch contacts must transition cleanly on gentle breath pressure. Coil ~22Ω ±5%..

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.