If your air conditioning system is blowing hot air after recharging it, there could be several potential causes for this issue. Here are a few possibilities to consider:
Insufficient refrigerant charge: While recharging the AC system, it's possible that the refrigerant was not added in the correct amount or the system was not properly evacuated before recharging. Insufficient refrigerant charge can result in the AC blowing warm or hot air.
Refrigerant leak: If the AC system was low on refrigerant before the recharge, it's possible that there is a leak in the system. Even after recharging, the refrigerant can escape, leading to inadequate cooling. It's important to identify and repair any leaks before recharging the system again.
AC compressor issues: The AC compressor is responsible for compressing the refrigerant and circulating it through the system. If the compressor is faulty or not functioning properly, it may not be able to cool the air effectively. This can result in the AC blowing hot air.
Electrical or sensor problems: The AC system relies on various electrical components and sensors to operate correctly. If there is a problem with any of these components, such as a malfunctioning temperature sensor or a faulty control module, it can cause the AC to blow hot air.
It is recommended to have a qualified automotive technician inspect and diagnose the issue with your AC system. They will be able to perform a thorough inspection, check for leaks, test the compressor and electrical components, and determine the exact cause of the problem. This will help ensure an accurate and effective repair.