Field Actions
DISPATCHAlways disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.
Frequently Asked Questions: Nardi F21
FAQ TREEWhat does error code F21 mean on a Nardi appliance?
Nardi error code F21 indicates: Nardi LSI / LVI / LGI Built-in Stainless Steel Sump Integrated Dishwasher: Operational diagnostic fault code F21 signaled by internal electronics. Drain pump motor winding open circuit or rotor mechanically locked by debris (160-220 Ω).
What is the root cause of Nardi error code F21?
The primary root cause for Nardi code F21 is: On Nardi kitchen suites engineered with Bitron wash hydraulics, 2040W flow-through heater (26-28 Ω), 10 kΩ wash NTC, synchronous drain motor (160-220 Ω), and AquaStop float protection: Broken magnet wire at coil pin, thermal overload burnout, or glass splinter wedged in rotor cavity Multimeter diagnostic parameter: drain pump coil resistance nominal 160 Ω to 220 Ω at 20°C; insulation to chassis ground >20 MΩ..
How do I fix or resolve Nardi error code F21?
To resolve error code F21: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: unplug drain pump electrical harness and measure coil resistance directly across spade terminals (160-220 Ω). Inspect spade lugs for signs of heat discoloration. Replace defective component, restore electrical supply, and perform system reset: Close door securely. Hold Program Selection button for 5 seconds while turning power switch ON; release when program LEDs sequence to reset.
Is it safe to clear Nardi error code F21 by resetting power?
Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Nardi code F21 persists, the physical component causing On Nardi kitchen suites engineered with Bitron wash hydraulics, 2040W flow-through heater (26-28 Ω), 10 kΩ wash NTC, synchronous drain motor (160-220 Ω), and AquaStop float protection: Broken magnet wire at coil pin, thermal overload burnout, or glass splinter wedged in rotor cavity Multimeter diagnostic parameter: drain pump coil resistance nominal 160 Ω to 220 Ω at 20°C; insulation to chassis ground >20 MΩ. must be inspected or replaced.
How do I test electrical resistance for Nardi code F21 using a multimeter?
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..
What safety protocol must be followed before servicing Nardi code F21?
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.
Community Verification
COMMUNITYDid this solution resolve the issue?