How To Read Ac Manifold Gauges. As an hvac mechanic, you should know that two types of manifold gauges (analog and digital) are available. Blue represents the low pressure side of the air conditioning system, and red represents the high pressure side.
AC manifold gauges reading YouTube
The valve is usually located under the hood and is opened and closed. This is one of the basic tasks of the hvac manifold gauge. If it doesn’t, it needs to be recalibrated. Check air temperature or blend door and actuator. When in use, the needle will move and stabilize to provide a reading. Open the values and check the dials on the low and pressure sides. Determine if the vehicle has a heater control valve. Web analog gauges are normally color coded; Afterwards, open them by turning the knob on the top. Check for a dirty evaporator.
Then, attach one of the hoses from your manifold gauge set to this port using an appropriate fitting adapter; Reading vacuum pressure already in a system. And you have to interpret manifold gauge readings based on their types. Use the gauge readout tool separately or in combination with the table of gauge diagnostics for ac troubleshooting. Car ac gauges also come in varying sizes with common options being 2 to 4 inches. Check the cabin air filter. Gauge pressure is the first tool in ac troubleshooting. Make certain that both the high pressure and the low pressure valves are closed. Diagnostic tools make it easy to service or replace an ac unit. The table below shows 7 gauge readouts that you may encounter. Other parts such as hoses, gauges, and inlet/outlet ports are located or attach to it.
