What should the pressure be in an air conditioner?
Your air conditioning system holds a very high pressure between your AC compressor and condenser up expansion valve, and a relatively low pressure after the expansion valve and evaporator and back to the inlet of the compressor.
How to diagnose AC system problems by symptom?
DIY Auto Service: AC System Diagnosis by Symptom 1 AC System Diagnosis. The typical complaint for an AC problem is the AC blows warm air. 2 Three-Part Series. This series is divided into three parts. 3 Static AC Gauge Pressures. Static Pressure means the system is not running. 4 Static Pressures. There is a relationship between the pressure in…
Where is the pressure switch on an air conditioner?
The AC pressure switch іѕ a ѕаfеtу ѕwіtсh thаt monitors the рrеѕѕurе оf thе refrigerant on the high and low-pressure sides on your air conditioning system. So, you do often have two different AC refrigerant pressure switches on your car; one on the low-pressure side before the AC compressor and one on the high-pressure side after the AC Compressor.
What happens if there is no pressure on the AC compressor?
If the AC compressor is pumping the refrigerant without the right pressure and a loss of oil, it may result in serious damage to the compressor, which may result in prohibitive repair costs.
How can I check the pressure on my air conditioner?
Check AC Pressures Use your air conditioning gauge set to check for adequate levels on both sides. You will attach the low-pressure gauge to the low-pressure fitting and vice versa. On the low-pressure side, you should see readings near 30 PSI when the temperature outside is 90 degrees or less.
What should the pressure be on my AC switch?
On the low-pressure side, you should see readings near 30 PSI when the temperature outside is 90 degrees or less. The high-pressure side should be around twice the ambient temperature with 50 PSI added.
What should the static pressure be on my air conditioner?
Low static pressure normally shows a leak that must be found and repaired. Finding and repairing leaks are covered in the next Detailed Topic. At least twenty-five PSI of static pressure is required, or the cycle switch may disable the compressor. What is normal automotive air conditioner pressure? Start the engine and turn on the air conditioner.
Why does my car air conditioner not pressure test?
If the pressures are as above and the temperature of the air from the vents is not low enough, touch the outlet tube from the evaporator. A cold line suggests the problem likely exist under the dash, with the actuators or doors. Often, a temperature door malfunction will allow the cooled air to be reheated.