Press "Cycle Signal" on the front of your Whirlpool dryer's control panel. Continue to hold the button until the light above the button turns off, which indicates the control panel lock is disabled.
Push "Start/Pause" to halt the current timed cycle and wait for the clothes to stop moving in the dryer's drum.
Select "Temperature" to toggle between the various temperature levels. A light next to the temperature will turn on to indicate the new setting.
Press the up or down buttons on the control panel to increase or decrease the drying time. Push "Start/Pause" to resume the cycle and hold down the "Cycle Signal" option until the light turns on above it.