CIT304YB

What we most often repair on units like this

1. Touch panel that ignores a press or beeps without starting a zone
2. Zone that shuts off mid-cook because the glass underneath got too hot
3. Cooling fan under the glass that runs loud or not at all
4. Cracked or chipped glass after a heavy pan was dropped
5. Power cord or junction connection that overheats on the 30 A feed

A frameless black glass top like the CIT304YB usually sits in a kitchen where the counter was cut to a tight 28 7/8 by 20 inch opening, so the cooktop has very little room to breathe. That matters for service: induction electronics under the glass rely on a fan and clear airflow, and a drawer or oven stacked too close below can push the unit into thermal shutdown.

With 7,200 W on a 30 A feed, we check the wiring terminals and the breaker first, because a loose lug at 208-240 V creates heat long before anything stops working. After that we test each of the four elements, the 11-inch zone and the MultiTouch panel, which can misread a press when the surface is wet or sticky.

CIT304BB is named as the successor on Thermador’s page. Before we order anything, we confirm the exact part number on the rating plate.

Key features

• Heritage series induction top with four elements in a 30-inch width
• Black glass surface in a frameless design
• MultiTouch illuminated control panel with 17 power levels
• Draws 7,200 W from a 30 A, 208-240 V circuit
• Ring Zone flexibility plus an 11-inch heating zone for large cookware
• PowerBoost on all cooking zones and a timer for each of the four elements
• Opening of 28 7/8 by 20 inches for a 31 by 21 1/4 inch top