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=== Refrigerant Leak Detection ===A leak in the air conditioner tubes will pose the threat of refrigerant loss and finally, no cooling.There are three common leak detection methods at end user level.*Soap test*Electronic leak detector*UV light testElectronic leak detector is the most widely used method nowadays, with lightweight construction, and accurate pin-pointing of the leak position on the tube, or other air conditioner parts.Treatment for leaks is either part replacement, or repair by tube soldering, or welding.