The FD's do not have a windshear mode, or windshear guidance.
If the aircraft detects windshear, it will shout "windshear, windshear, windshear".
The Pilot flying will then select TOGA thrust and the FD's will command SRS, you can then follow the SRS FD's demands as long as you still believe you are in windshear. This can be above 1300' of course.
The aircraft does not specifically give windshear guidance, just windshear detection.