Power reserve display

My Big pilot perpetual calendar's power reserve display looks not working, stopped at red area, however no problem with watch. Anybody has same problem?

Seems like the rotor must be winding the watch but the PR indicator is disconnected from the mechanism. It will need to be serviced, although if you wear the watch every day or put it on a winder you could wait to send it in. Of course, if it is still under a warranty send it in before expiration.