Nardi C25

Nardi error code C25 indicates: Nardi PVF / PV43 Touch Control Induction & Electronic Flame Gas Cooktop: Operational diagnostic fault code C25 signaled by internal electronics. Gas burner flame failure safety thermocouple thermoelectric signal loss (<5 mV DC under flame).

The primary root cause for Nardi code C25 is: On Nardi kitchen suites engineered with planar induction coils, 100 kΩ surface thermistors, IGBT transistors with fast recovery diodes, 12V fan tachometer, and 230V spark pulse generators: Thermocouple tip carbon encrusted, burner cap misaligned, tip bent away from flame, or copper lead broken Multimeter diagnostic parameter: thermocouple generated thermoelectric voltage nominal 18 mV to 28 mV DC when tip is heated in blue flame..

To resolve error code C25: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: connect multimeter in DC millivolt range between thermocouple center core and outer copper sheath under flame. Inspect spade lugs for signs of heat discoloration. Replace defective component, restore electrical supply, and perform system reset: Isolate hob at the electrical fuse board for 90 seconds. Restore power and press the ON/OFF key three times within 5 seconds to clear faults.

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Nardi code C25 persists, the physical component causing On Nardi kitchen suites engineered with planar induction coils, 100 kΩ surface thermistors, IGBT transistors with fast recovery diodes, 12V fan tachometer, and 230V spark pulse generators: Thermocouple tip carbon encrusted, burner cap misaligned, tip bent away from flame, or copper lead broken Multimeter diagnostic parameter: thermocouple generated thermoelectric voltage nominal 18 mV to 28 mV DC when tip is heated in blue flame. 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.