What may have caused my range glass top to crack?

Temperature Shock

Always put your pan on the cooktop before switching on the heat. Placing a heated pot on a cold glass surface produces a thermal shock that can make the surface to crack

Deb: maybe this will help...

https://homeguides.sfgate.com/repair-glass-cooktop-69808.html

Deb...No idea..did you drop something on it? Is it under warranty? So sorry

Hi Deb, so sorry your glass top range is cracked. Hope this helps you so it doesn't happen again. Please do not use that burner. Search Results

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Temperature Shock

Always put your pan on the cooktop before switching on the heat. Placing a heated pot on a cold glass surface produces a thermal shock that can make the surface to crack.Apr 12, 2018

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What Makes Ceramic Glass Electric Cook Top to Crack ...

Yikes. I suppose the thermal shock explanation could be it, but I have had glass cooktops for too many years to count and we are not careful. I have teenagers preparing meals and people don't always put the pot on the burner first. We also have taken very hot pots and put them on cold areas of the stove with no problem. I would call the manufacturer and inquire about your warranty. SO sorry...

It probably cracked from a dramatic swing in temperature. If the crack is small, you can repair it.

Hope this Helps! Jeremy - https://do-daddy.com

I agree, the temperature shock from hot to cold or reverse, maybe an object was dropped on it, or maybe the electric underneath had a surge, causing too high of a temperature that the glass could not withstand.

Temperature. Or, do you use cast iron pots/pans? I cracked mine using one and learned a lesson lol!

Sounds like there was to much weight on it .