Assess the causeFollow the evidence.
Trace the leak and inspect the drain route, connection, slope, collection tray and any coil icing.
The exact model and operating conditions determine which tests apply. These are possible inspection directions, not a list of components that must be changed.
Before the appointmentKeep the useful details.
Note where the first drop appears and whether leakage begins immediately or after extended running.
Record the timing, previous work and accessible model label. Do not remove covers or handle live, refrigerant or pressurised components to obtain information.