CSX25DRZBAA Electric Smooth-Top Cooktop – Troubleshooting & Repair Guide

Understanding the Problem

This guide covers common problems on the CSX25DRZBAA (an electric radiant smooth-top cooktop) — burners that won't heat, uneven heating, clicking or buzzing, control/knob not responding, and cracked ceramic glass. Below are step-by-step diagnostics and practical repair steps you can follow. 1) Safety first - Turn OFF power at the breaker for the cooktop (this is typically a 240V feed). Lock out or tag the breaker if possible. Confirm power is off with a non-contact voltage tester or multimeter. 2) Symptom: One burner won't heat (or heats intermittently) - Check visual: make sure the element surface shows no obvious damage and the control knob is set correctly. - Test the element (radiant surface element): remove the control knob and remove the cooktop (see step 5). With the element disconnected, measure continuity across the element terminals using a multimeter. A good element typically shows some low resistance (often 10–50 ohms depending on element size). If open (infinite resistance), the element is bad — replace it. - If the element has continuity, test for 240V at the element terminals with the cooktop powered on (use extreme caution). If 240V is present and the element doesn't heat, the element is faulty. If no voltage is present, proceed to test the infinite switch. - Test the infinite switch (the burner control switch): with power off, remove the switch and check continuity between the common and output terminals while turning the knob. If the switch doesn't change continuity or is open where it should close, replace the infinite switch. 3) Symptom: Burner clicks, buzzes, or cycles rapidly - Clicking/buzzing often indicates a failing infinite switch or loose wiring/terminal connection. Tighten terminals, inspect for burned or melted connectors. Replace the infinite switch if it clicks under load or fails continuity tests. - Rapid cycling can be normal for radiant elements with an electronic control (the element is being modulated), but if the cooking performance is poor, check the switch and element resistance. 4) Symptom: Glass ceramic surface cracked or spiderwebbed - Any crack in the glass requires immediate shutoff of the cooktop. Cracked glass is dangerous: heat can cause electrical shorts and glass can shatter. Replace the entire glass ceramic top. Inspect for glass shards under seals and wiring damage — replace any compromised wiring or terminal block. 5) How to access components (general steps) - Remove power at the breaker and verify dead. - Remove control knobs. Unscrew any top-mount screws securing the cooktop into the countertop. Carefully lift the cooktop up (it may be heavy and fragile) and rest it on a supported surface, exposing the underside where the elements and switches mount. - Label wiring or take photos before disconnecting so reassembly is exact. 6) Replacing a surface element - With power off, disconnect wiring to the element and remove any retaining clips/studs holding the element. Install the new element, reconnect wiring, lower the cooktop back in place, restore power and test. 7) Replacing an infinite switch - With power off, remove the cooktop and access the control switch assembly. Disconnect wires, remove mounting nuts, install new switch, reconnect wiring per your photos, reassemble and test. 8) Replacing the ceramic glass top - Order the correct glass top for CSX25DRZBAA. Remove the entire cooktop from the countertop, disconnect wiring, remove any mounting brackets and clips, lift off the old glass (you may need to remove burners/trim). Install new glass, reinstall components and wiring exactly as removed, and test. 9) If the entire control panel or electronic board is faulty - Some models use a control module/relay board. If multiple burners fail or the touch/indicator lights are dead, inspect the main terminal block, fuses, and the control board for burned components. Replace the control board if visually damaged or if diagnostics show no output voltages. 10) Final testing - After any replacement, reassemble, restore power, and test each burner on low, medium, and high. Monitor for proper heating and for any unusual noises or smells. Safety note: This cooktop uses high voltage (typically 240VAC). If you are not comfortable working around live circuits, have no multimeter experience, or if the glass is cracked, hire a qualified technician. Always disconnect power before working on internal components.

Common Symptoms

One burner won't heat; burner heats weakly or cycles; audible clicking or buzzing from control; cracked or shattered ceramic glass; control/knob not responding.

Common Causes

• Open/failed radiant surface element (internal break)
• Faulty infinite (burner) switch or control board
• Loose or burned terminal connections or damaged wiring
• Cracked ceramic glass top
• Failed main control/relay board or blown internal fuse

Popular Parts That Fix This Problem

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Frequently Asked Questions