What is the internal temperature of a Kenmore HE4 Dryer

no reset but a thermal fuse.. maybe thats the problem

Your drum rollers is in need of lubrication.
You can lube them with a high quality machine oil like 3inOne oil.
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PF - Power Failure - PF error code indicates a power failure during the dryer's cycle. Press and HOLD start to continue the cycle, or press off/pause to clear display.

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140 degrees.

The ignitor may be bad or the thermal fuse may be failed.

hi..A poor connection between the wire terminals and the
heater relay causes high current draw and damages the
terminals on the heater relay on the main control board.
check it out..
thank u..
kindly rate my response..

Shut the breaker off for several hours. Turned it back on.

hi .thanks for the question .yes i would check all venting from dryer to the outside . clogged venting, or dryer too close to the wall could cause this problem . thanks the appliance doc

Error message E1 indicates the temperature thermistor has failed.