What are the reasons for refrigerant leakage in the Nissan Sylphy's evaporator?
2 Answers
Nissan Sylphy's evaporator refrigerant leakage reasons are as follows: 1. Insufficient refrigerant: Split air conditioners may experience refrigerant leakage or seepage due to installation issues or prolonged use. A decrease in refrigerant within the cooling system leads to excessively low evaporation pressure, causing the evaporator to freeze, typically at the front part of the evaporator. 2. Compressor malfunction: Over time, the compressor's efficiency may decline. Below is relevant information about the evaporator: 1. Working principle: The evaporator vaporizes the compressed and liquefied refrigerant, changing it from liquid to gas while absorbing heat, thereby lowering the temperature of the surrounding medium to achieve cooling. 2. Composition: The evaporator consists of one or several sets of coils.
I've been driving my Nissan Sylphy for over a decade, and the most common cause of refrigerant leakage from the AC evaporator is internal system corrosion. During humid summers, condensation accumulates on the evaporator surface during AC operation. Combined with airborne contaminants, this gradually corrodes metal components, leading to perforations. The refrigerant slowly leaks out, making the AC air increasingly less cool. Bumpy roads exacerbate the issue by loosening connection pipes through vibration. I remember when my car's AC failed years ago, the mechanic diagnosed this exact problem and recommended biannual AC cleaning to prevent clogs and corrosion. Additionally, aging materials in older vehicles like the Sylphy degrade faster, requiring regular seal replacements. Leaks don't just impair cooling - they can cause strong cabin odors and health hazards. Addressing it early prevents costly major repairs later.
