It appears your timer/main controller/CCU has failed in this instance.
For replacement parts - head on over to PartSelect.com or RepairClinic.com and enter in your full model number for a full parts listing.
I recommend both sites because ...
FixYa has no affiliation with either site - I have been using and recommending them for years - trouble free.
PartSelect has a great schematic database for locating the part on your unit and great "testimonials" for each part that often times includes HOW-TO information.
RepairClinic has pictures of each part they sell and also a great how-to and troubleshooting for basic repairs.
If your unit has never been serviced - there should still be an original service manual enclosed in plastic taped to the inside of the shell.
In the service manual are Error codes, maintenance procedures, and troubleshooting steps you can follow.
Anything too complicated or beyond your scope should be handled by a professional.
If you think you want to tackle the repair - and have gotten stuck on a step - reply to your question and I will be glad to help you out.
Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question
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