Whirlpool gold start button flashing dishwasher won't start

Press sani and heat back and fourth then after all lights light close door and hit start then wait about 3 minutes. worked for me

PROBLEM: WON’T START AND START/RESUME KEY LED FLASHES
3 TIMES WHEN START/RESUME KEY IS PRESSED.
Control programmed to
not start if it suspects
door switch is stuck
closed. Control looks for
switch to open between
cycles.
■ Customer didn’t open
door between cycles.
■ Door switch contacts
are stuck closed.
1. Open and close door and then press
Start/Resume key. Instruct customer.
2. Unplug dishwasher or disconnect power.
3. Check resistance across door switch in
Power Up circuit. Confirm proper latch
assembly operation.
Faulty control.
1. Unplug dishwasher or disconnect power.
2. Check/replace control.
PROBLEM: WON’T RUN AND LED FOR START/RESUME KEY IS
BLINKING SLOWLY
By design, if the door is
opened or power is
interrupted during a cycle,
the user must press the
Start/Resume key to
resume operation.
Instruct Customer; refer to Use & Care manual.
The door must be latched
for the Start/Resume key
to work.
NOTE: For models with all
keys on top of the door,
the Start/Resume key can
be pressed with the door
open but the door must
be latched within 3
seconds.
Confirm door is closed properly before pressing
Start/Resume key. Instruct Customer; refer to
Use & Care manual.
Door switch not making
contact:
■ Faulty door latch
assembly.
■ Faulty door switch.
1. Unplug dishwasher or disconnect power.
2. Measure resistance of door switch contacts
while checking mechanical operation of latch
assembly. Confirm switches not loose from
assembly.

Worked for me too...just did it,.