When an entire electric, induction, or gas cooktop suddenly refuses to turn on or heat up, the malfunction is typically caused by a major electrical supply failure or safety lock engagement. Common culprits include a tripped 240-volt double-pole circuit breaker at your home electrical service panel, a loose or unplugged power cord underneath the cabinet, an active child safety lock feature freezing the touch controls, or a blown internal thermal fuse. You can troubleshoot power failures safely using a digital multimeter. You can verify that your corrective action is successful when resetting the tripped circuit breaker, plugging the power cord in securely, or deactivating the child lock restores full operational readiness to the cooktop.
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