Oldoldtimer, I am sorry to hear that your timer isn’t operating properly. When setting the current time its best to do it at the top of the hour or 30 minutes after the hour for example 1:00pm or 1:30pm. This way you can be sure that the current time is correct since it can be difficult to set the current time since there are no minute markers. Hopefully this information helps in the future.
Jasco Products Tech Suport(Manufacturer)