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Yes shut it down and check the filter and make sure it is clean. If so you may have a system that is low on freon that will cause the coil to ice over and give you that code. If you want to leave it shut off for a couple hours then try it again and see if the code returns. If it returns and you have a good filter in it you likely need the sealed system checked for a low freon issue.
All I ask is please rate my service and tips are appreciated thanks!