Assess the causeFollow the evidence.
Identify the refrigerant and assess leak location, repairability, connections and the required charging process.
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.
Share the model label and any history of installation, relocation or earlier refrigerant work.
Record the timing, previous work and accessible model label. Do not remove covers or handle live, refrigerant or pressurised components to obtain information.