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Overfilling R-134a refrigerant in an air conditioning system can lead to increased pressure, which may cause the system to malfunction or even fail. Most modern AC systems are equipped with a high-pressure switch that can shut down the compressor to prevent damage if pressures exceed safe limits. However, this switch doesn't release excess refrigerant; it merely protects the system from potential harm. Properly charging the system according to manufacturer specifications is essential to avoid these issues.

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1mo ago

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