!!
critical Petsafe
Error Code Continuous rapid blinking red light
Error condition — indicates a problem preventing the device from functioning properly.
? What Causes This
Faulty electronics or software malfunction in device.
✓ How to Fix It
Contact customer care for replacement or repair service.
Source: page 15 of the official manual
From the manual
This error code appears in:
Petsafe Ppa44 16427 Microchip Cat Flap