Cooling pipes contract and move through clips, holes and framing contacts.
The short explanation
Cooling pipes contract and move through clips, holes and framing contacts.
What to compare
Compare location, timing, weather or operating cycle, then open the matching Living House layer to see the plausible routes.
What would strengthen the explanation
A repeatable trigger and a physical route through the nearby assembly are stronger than appearance alone.
Next step
Document the original condition and choose the least destructive check that can separate the leading explanations.
Observe→Compare triggers→Repair source→Verify outcome
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