What A2 means on your Dacor cooktop (dacor cooktop a2)
Dacor cooktop a2 covers the fan that cools the induction coil modules and power electronics mounted underneath the glass. Dacor’s manual describes this problem as either a blocked DC motor or a wiring or PCB defect driving it, without narrowing to one cause on its own. Because the coil modules and their IGBTs generate real heat while running, especially at high power settings, the cooktop depends on this fan to keep the electronics within a safe range, and a2 means that cooling path can no longer be confirmed.
Symptoms
The signs below separate this condition on your Dacor cooktop from other problems that present almost identically on a cooktop.
- A2 appears on the display, often after the cooktop has been running one or more zones at high power for a while.
- A fan that normally hums quietly underneath the cooktop may sound louder, rougher, or stop entirely just before a2 appears.
- Zones may shut down or refuse to start at high power settings while lower settings still work briefly.
- The problem can recur quickly on restart if the fan is genuinely blocked rather than just intermittently noisy.
- A warm smell from underneath the cooktop can accompany repeated a2 events.
Common causes
The causes below are ranked by how frequently each is responsible on a Dacor cooktop, which is also the order worth checking them in on your cooktop.
- Blocked or seized fan motor — debris or a mechanical problem is preventing the fan from spinning freely.
- Fan wiring defect — a damaged or loose connection between the fan and the main PCB interrupts the motor’s power or feedback signal.
- Main PCB driver failure — the circuit on the board that powers the fan has failed rather than the fan itself.
- Dust or grease buildup around the fan intake — restricted airflow under the cooktop can cause the fan to labor and eventually problem.
- Aged fan bearing — years of continuous duty can wear a fan motor to the point it can no longer spin at its commanded speed.
Troubleshooting steps you can try
Take these in order on your cooktop, and anything past the point where you are unsure about the cooktop belongs with a technician rather than a screwdriver.
- Cut power to the cooktop at the breaker for a full minute and restore it to see whether a2 clears on the next power-up.
- Listen closely underneath the cooktop when it is running, if safely audible, for a fan that sounds labored, intermittent, or silent.
- Avoid running high-power settings on multiple zones at once until a2 is resolved, since that increases the cooling demand on a fan that may already be struggling.
- Check that nothing is stored in the cabinet directly beneath the cooktop that could restrict airflow to the fan intake.
- Do not attempt to access or clean the fan yourself — it sits inside the cooktop housing beneath the glass.
Parts a technician may replace
Diagnosis on your Dacor cooktop usually points at the cooling fan motor, fan wiring harness, and main pcb. Nothing is ordered for the cooktop until the failing part is confirmed on the cooktop itself.
When to call a technician
A2 puts the coil modules at risk of overheating if the fan is not restored, so book a technician to inspect the motor and its wiring rather than continuing to run high-power cycles. Medium severity means the cooktop can wait, but a recurring A2 on a cooktop should be diagnosed rather than ignored. We service your cooktop independently of Dacor, fitting genuine parts and standing behind the labor for 30 days.
Related help and Dacor resources
Still seeing the A2 condition on the cooktop? Schedule a cooktop visit, or work through our other cooktop problem pages. www.dacor.com has the factory data for your cooktop.
