Doesn’t work with the ACARS reporting timeline - fire was first detected inside the bulkhead under/around the right front windows. Check the timeline (I’ve annotated it):
00:26Z 3044 ANTI ICE R WINDOW - right forward cockpit window anti-ice sensor has detected elevated temperatures when the computer wasn’t expecting to see them.
00:26Z 561200 R SLIDING WINDOW SENSOR - right side cockpit window sensor has detected elevated temperatures when the computer was not expecting to see them.
00:26Z 2600 SMOKE LAVATORY SMOKE - Smoke detected in the lavatory. The front lav on an A320 is one the *left* side of the aircraft. It shares the back wall of the cockpit on the left side.
00:27Z 2600 AVIONICS SMOKE - Smoke detected in the avionics bay which IIRC is under the floor of the cockpit.
00:28Z 561100 R FIXED WINDOW SENSOR - right side cockpit window sensor has detected elevated temperatures when the computer was not expecting to see them.
00:29Z 2200 AUTO FLT FCU 2 FAULT - Autopilot module 2 has failed, probably due to fire given prior messages.
00:29Z 2700 F/CTL SEC 3 FAULT - Part of main flight controls has failed, probably due to fire given prior messages.
This reads like an underfloor fire.
These codes came up in the space of 3 minutes. These are the only codes? Wasn’t long.