Panasonic DMW-FL500 Operating Instructions Manual page 34

∫ Q&A for the panel display
Question (Q)
[ISO] and [F] are flashing or
the numbers for the ISO
sensitivity and aperture are
flashing.
The optimum camera to
subject distance is flashing.
[ ] and the lighting angle
are flashing.
[ ] does not go off.
[ ] does not go off.
34
VQT0Z62
This means that the ISO sensitivity and aperture of the digital camera
are outside the flash working range of the flash.
Change the ISO sensitivity and aperture of the digital camera.
The flash is too close to the subject.
If the subject is too close, the lighting range of the flash will shift so
take photos at a distance further than 0.6 m (or 0.5 m for close-up
photos).
Extend the wide panel.
The flash head has been set to point downward (7 degrees). Do not
use this setting unless you are taking close-ups.
The wide panel is extended.
≥ The guide number (GN) is reduced.
Pay attention to the camera to subject distance.
Answer (A)