Locate the first water
Describe whether the rear wall is wet, food containers leaked or the cabinet floor fills repeatedly. Give the timing and door-opening pattern already noticed.
Avoid an assumed drain repair
The model's drainage arrangement matters. Keep probes and improvised tools out of inaccessible channels. An engineer can assess the visible route and establish whether suitable work is available.
A useful distinction
A drain-related puddle often has a different position from condensation on food packaging. Tell us whether water accumulates during normal storage or only after a large spill, since the inspection should follow that distinction.