** Any idea what could be wrong **
It sounds like the control keypad is defective. On your model that keypad is only sold already attached to the control panel (see the following link) and not available separately.
LINK >
Maytag CWE9030DDB Control Panel Asm.
** how I could find out? **
If the appliance's wiring diagram has a circuit matrix showing the contacts for the keypad's ribbon connector, it might be able to be verified. Unfortunately, manufacturers don't always supply the test points for those keypads in which case a technician just has to make his best assumption and hope for the best. There aren't many things however that could duplicate a keypad failure symptoms so it's usually a pretty safe bet.
JMO
Dan O.
www.Appliance411.com
The Appliance Information Site
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