It seems a button may be stuck on either the remote or on the control panel.
Try removing the batteries from the remote to eliminate it as the cause of the problem, then try using the buttons on the control panel on the recorder itself - let me know if they work ok...
Hi Don and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, proposed preliminary tries (if have not been done):
A friendly reminder; a reset is both a test and a try of a fix. As it implies, a reset would force the unit to revert back to factory defaults removing glitches and config errors but would include memories, presets and user preferences. After a reset, the initial setup would have to be performed.
A reset however would not be corrective of an internal hardware concern; but it would be confirmed. In some instances, it may even expose other issues.