info Philips

Status Red LED flashes once and then turns off

All learned codes for a device cleared — all commands previously learned for the selected device have been deleted.

? What Causes This

User entered the learning code 99910 to clear all learned codes for a specific device.

What This Means

If you need to recover the learned commands, you will need to re-learn them by following the 'Learn commands' procedure again.

Source: page 7 of the official manual

From the manual

Manual page 7 — Philips error Red LED flashes once and then turns off

This error code appears in:

Philips Universal Remote Control