Final answer:
The FAULT light with an ECAM caution message on the GALY & CAB pushbutton signals a malfunction in the aircraft's galley and cabin electrical supply, requiring the attention of flight crew to address potential issues like short circuits or overloads.
Step-by-step explanation:
The FAULT light on the GALY & CAB pushbutton in an aircraft's electric panel, accompanied by an ECAM caution message, typically indicates a malfunction or abnormal operation in the galley (GALY) and cabin (CAB) electrical supply. This light alerts the flight crew to a potential issue that requires attention. The exact cause can vary, but it might relate to issues such as an electrical short circuit, overload, or a system failure that affects the galley and cabin amenities. Flight crews should refer to their Emergency/Abnormal Procedures checklist for the correct troubleshooting and corrective actions to resolve such electrical issues.It is a warning that there is an issue with the panel or the devices connected to it. This could be due to a short circuit, overload, or other electrical problems.