Air Conditioning Repair Certification (ETI) Practice Exam

A broken reed valve in a compressor typically results in low suction and low discharge pressures. The reed valve functions as a one-way valve, allowing refrigerant gas to flow in one direction (into the compressor) and preventing it from flowing back out when the compressor is not operating or during the return stroke. When the valve is damaged or broken, it can fail to seal properly, leading to a situation where refrigerant gas may leak back into the suction side of the compressor and not be adequately compressed. This condition reduces the effectiveness of the compressor, resulting in lower pressure readings on both the suction and discharge sides. Consequently, as the compressor struggles to operate efficiently due to the valve malfunction, the overall pressure in the system decreases, affecting the performance of the air conditioning system. Understanding the role of the reed valve helps in diagnosing issues related to compressor performance, as its integrity is crucial for maintaining the necessary pressure levels within the refrigeration cycle.