!!
critical Petsafe
Error Code LED flashes rapidly
Error — device has failed and needs service.
? What Causes This
Malfunction or obstruction causing improper operation of the pet door.
✓ How to Fix It
1. Contact customer care for further troubleshooting or replacement.
Source: page 7 of the official manual
From the manual
This error code appears in:
Petsafe Ppa44 16427 Microchip Cat Flap