Panasonic UF-5500 Service Manual page 68

UF-5500 / 4500
2. Safety Protection
a. 2 thermostats are provided with the unit, and the heater circuit is shut down when their surface temperatures became over
320°F (160 °C).
b. The heater control circuit of IC300 has the built-in function that the hardware turns off the heater control automatically if
the software does not keep turning ON the heater every a fixed time.
c. When the temperature became over 482°F (250 °C), the heater control circuit of IC300 is turned off forcedly and system
reset will be executed.
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