Field Actions
DISPATCHAlways disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.
Frequently Asked Questions: Nardi C22
FAQ TREEWhat does error code C22 mean on a Nardi appliance?
Nardi error code C22 indicates: Nardi PVF / PV43 Touch Control Induction & Electronic Flame Gas Cooktop: Operational diagnostic fault code C22 signaled by internal electronics. Induction zone power relay driver circuit defect or relay coil open circuit on generator board.
What is the root cause of Nardi error code C22?
The primary root cause for Nardi code C22 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: Driver transistor array ULN2003 channel blown, free-wheeling diode shorted, or relay coil open Multimeter diagnostic parameter: 12V DC power relay coil resistance nominal 360 Ω to 440 Ω; open circuit indicates coil winding burnout..
How do I fix or resolve Nardi error code C22?
To resolve error code C22: Safely de-energize the appliance at the electrical distribution board. Unplug wiring connector from the affected component and verify with a digital multimeter: measure resistance across relay coil solder joints on underside of PCB (expect 360-440 Ω) and test driver diode. 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.
Is it safe to clear Nardi error code C22 by resetting power?
Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Nardi code C22 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: Driver transistor array ULN2003 channel blown, free-wheeling diode shorted, or relay coil open Multimeter diagnostic parameter: 12V DC power relay coil resistance nominal 360 Ω to 440 Ω; open circuit indicates coil winding burnout. must be inspected or replaced.
How do I test electrical resistance for Nardi code C22 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 C22?
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.
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