BSH Thermador CEM304, Service Manual, Page: 13 / 80

CEM/CET/CEP Service Manual
PAGE 11
Temperature limiters
Each element uses a temperature limiter to prevent the element from becoming too hot. The limiters have
2 sets of contacts, one is normally open, and one is normally closed. The normally open contact closes and
turns on the hot surface light when the glass is too hot to touch. The normally closed contacts control the
amount of heat to the cooktop by switching on and off, depending on the switch setting. Although cycling is
normal, the following can cause the limiter to cycle on and off more than usual (See illustration, below.)
• W arped or uneven pan bottoms not making full contact with the base.
• Pan is too small for the size of the element.
• Pan has boiled dry.
• Pan material or shape of the pan is slow to transfer heat.
Limiter
Component Description
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