What C2 means on your Dacor cooktop (dacor cooktop c2)
Dacor cooktop c2 is a different sensor from c0 and c1: it monitors the IGBT (insulated-gate bipolar transistor), the power-switching component inside each induction coil module that actually drives the magnetic field into the cookware. The main PCB has read that sensor circuit as open, meaning it has no way to confirm the IGBT is running within a safe temperature range. Because an overheated IGBT can fail destructively, Dacor’s Modernist manual disables the affected zone the moment this sensor loses its signal rather than let the coil keep drawing power blind.
Symptoms
The signs below separate this condition on your Dacor cooktop from other problems that present almost identically on a cooktop.
- C2 appears and one induction zone stops responding to any power-level setting.
- The problem can appear during active cooking rather than only at power-up, since the IGBT sensor is watched continuously while a zone runs.
- A faint electrical smell may accompany the first c2 event if the sensor loss followed real IGBT stress.
- Other zones usually keep functioning normally while one reports c2.
- The affected zone may briefly work before the problem appears if the sensor connection is intermittent rather than fully broken.
Common causes
None of these causes is exotic, but they are not equally likely on a cooktop, so work down them in this order on your Dacor cooktop.
- Open sensor wiring inside the coil module — the connection between the IGBT sensor and the main PCB has broken.
- Failed IGBT sensor — the sensor element itself has opened, often after the power module has run hot for an extended period.
- Loose module connector — a plug at the coil module has partially disconnected from vibration or heat cycling.
- Coil module failure — a deeper failure in the induction power module can take its temperature sensor down with it.
- Main PCB input problem — less commonly, the board’s own channel for that sensor has failed.
Troubleshooting steps you can try
The steps below are the safe ones for a Dacor cooktop, so stop as soon as mains power, a gas supply, a hot surface or a sealed circuit in the cooktop enters the picture.
- Cut power to the cooktop at the breaker for a full minute and restore it to see whether c2 clears at the next power-up.
- Avoid running large pots at maximum power on adjacent zones until c2 is resolved, since sustained high draw stresses the same coil modules.
- Note whether the problem appeared cold or only after the zone had been running for a while at high power.
- Use a different zone for cooking in the meantime rather than repeatedly retrying the affected one.
- Do not open the cooktop housing to inspect the coil module yourself — the power electronics inside carry high voltage.
Parts a technician may replace
The igbt temperature sensor, induction coil power module, and main pcb are what a technician examines on a cooktop showing this problem. Genuine parts are fitted to the cooktop, matched to your exact cooktop rather than to the family it belongs to.
When to call a technician
C2 points at the coil module’s own protection circuit, and diagnosing it safely requires removing the cooktop and testing the module, which is technician work. There is no urgency at Medium severity, yet a cooktop that repeats C2 after these checks deserves a technician’s eyes. We service your cooktop independently of Dacor, fitting genuine parts and standing behind the labor for 30 days.
Related help and Dacor resources
A cooktop that keeps returning to this state needs eyes on it — book the cooktop repair, or check whether we cover your area. Specifications for the cooktop are at www.dacor.com.
