Start the engine. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit. Note: If the ports are not labelled, try connecting the recharge kit to both unlabeled ports on the AC hoses. The recharge kit will only properly connect
8. Refrigerant Leak. A refrigerant leak is one of the more serious issues that could cause your AC to blow warm air. Do not try fixing a refrigerant leak on your own. Your AC system uses refrigerant to cool the air and then pumps the cooled air through your home.
R22. R22 is what is commonly known as Freon, and has been used as a central air conditioning system refrigerant for decades. However, like R12, itβs been linked to environmental damage such as ozone depletion. As a result, the Clean Air Act of 2010 was passed, and residential furnace repair pros and manufacturers have stopped using it.The Federal Clean Air Act Amendments of 1990 specify the concentrations of freons that can be released into outdoor ambient air by industries. There are no federal drinking water standards for any of the freons. However, there are state groundwater standards for: fluorotrichloromethane (Freon 11) at 3,490 parts per billion (ppb)
The most common causes that hinders normal operation of air conditioning system on your Toyota Prius are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system. 1. Dirty cabin air filter.