Bompani A04

Bompani error code A04 indicates: Bompani AquaStop Fully Integrated & Freestanding Eco-Wash Dishwasher: Operational diagnostic fault code A04 signaled by internal electronics. Wash water temperature sensor NTC thermistor circuit open (>250 kΩ) or shorted (<800 Ω).

The primary root cause for Bompani code A04 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: Internal thermistor chip cracked, moisture corroding wiring pins in sump socket, or broken wire harness Multimeter diagnostic parameter: nominal NTC resistance 47.0 kΩ at 25°C (or 10.0 kΩ depending on platform), dropping smoothly to 5.8 kΩ at 60°C..

To resolve error code A04: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: unplug NTC connector from sump housing and measure resistance across pins at ambient 20°C (expect ~47 kΩ). 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 A04 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: Internal thermistor chip cracked, moisture corroding wiring pins in sump socket, or broken wire harness Multimeter diagnostic parameter: nominal NTC resistance 47.0 kΩ at 25°C (or 10.0 kΩ depending on platform), dropping smoothly to 5.8 kΩ at 60°C. must be inspected or replaced.

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

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.