Whirlpool Duet HT Blinking Lights at any cycle and won't work

you probably have a clogged tube from some old softener that dryed up inside it

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

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download the manual from

http://www.manualslib.com/products/Whirlpool-Duet-Sport-Wfw8300sw01-2924340.html

push power button on push any cycle button hold down 3-5 seconds release push 4-5 times . if that don't fix it unplug for 30 min try that. let me know if it works might check lint trap also

Press the cancel button twice to cancel the error code. There should be an error code flashing -- for example 'F02'.

UR MAIN CONTROLLER NEEDS REPLACING. IT HAS A COMMUNICATION ERROR

Hold the 'end of cycle' signal button for 3 seconds.

sounds as if its a door latch/lock issue, not recognizing the door closed will simply beep 3 times when the start button is depressed. try unplugging and replugging after 2 min.

sounds like it could be a stuck keypad on the user interface or bad control

Flashed f ...time light flash...pump starts to work...doesn't spin...doesn't cycle...