short repeating messages are actually fault codes—your appliance telling you what’s wrong with it—and they’re found on many newer appliances. For instance, F3 on a Maytag oven display means the oven temperature sensor needs to be replaced. A GE dishwasher that says C5 has low water pressure and probably needs a new water inlet valve.
When you see a code number flashing, look it up in the owner’s manual or at the manufacturer’s Web site, or check the online appliance repair sites. Armed with a diagnosis and a make and