Help library: Help library: Why does copper tubing between indoor and outdoor unit discolours

Why does copper tubing between indoor and outdoor unit discolours

Troubleshooting Commercial Air Conditioners, Residential Air Conditioners 19/06/2015

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Why does the field copper piping which terminates between the indoor and outdoor unit pipe turn black?

Symptom

Copper tubing between indoor and outdoor unit discolours (Black in composure0.

Cause

Long term exposure to sunlight, will cause the copper tubing to discolored.

How to fix

Discolored pipes do not affect the product performance.

Please be assured that it is safe to use the product

< Pipe exposed to sunlight >

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