Nardi Er20

Nardi error code ER20 indicates: Nardi FEX / FEA / FRA Built-in Electric Multifunction & Pyrolytic Italian Oven: Operational diagnostic fault code Er20 signaled by internal electronics. High-temperature safety limit thermostat tripped open circuit (manual reset bimetal 350°C).

The primary root cause for Nardi code ER20 is: On Nardi kitchen suites engineered with PT500 temperature sensor (540 Ω at 20°C), shaded-pole tangential cooling motor, 2200W circular turbo heater, motorized latch, and electronic relay board: Cavity cooling blower failure caused heat build-up on upper roof, or cavity thermostat failed to cycle Multimeter diagnostic parameter: safety thermostat continuity <0.1 Ω when reset; open circuit (>10 MΩ) indicates tripped or damaged bimetal..

To resolve error code ER20: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: locate safety thermostat on oven top casing, press red manual reset button, and test contact continuity (<0.1 Ω). Inspect spade lugs for signs of heat discoloration. Replace defective component, restore electrical supply, and perform system reset: Turn mode dial to 0. Press and hold Clock and Stop buttons for 5 seconds until buzzer beeps twice, resetting internal microprocessor error log.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Nardi code ER20 persists, the physical component causing On Nardi kitchen suites engineered with PT500 temperature sensor (540 Ω at 20°C), shaded-pole tangential cooling motor, 2200W circular turbo heater, motorized latch, and electronic relay board: Cavity cooling blower failure caused heat build-up on upper roof, or cavity thermostat failed to cycle Multimeter diagnostic parameter: safety thermostat continuity <0.1 Ω when reset; open circuit (>10 MΩ) indicates tripped or damaged bimetal. 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.