The AC pressure switch is a safety switch that is mounted on both the high and low sides of the AC system. It monitors the pressure of the refrigerant on its respective side of the system. There is a high side pressure switch, and low side pressure switch, and they both serve to monitor the system for pressure faults that can possibly damage the compressor. When the pressure is too low, the compressor risks damage due to running with low oil; and when it is too high, the compressor is at risk of overheating and becoming damaged. Depending on which side of the system the sensor is mounted in, when the pressure rises too high or drops too low, the switch will turn off the compressor to prevent possible damage from occurring. As the pressure switches serve to protect the compressor and rest of the system from damage, they play an important role for the proper function and service life of an AC system, so they should be replaced if they are causing problems. When they begin to fail they will usually display a few symptoms that will alert the driver of a potential problem.

Repeatedly cycling on and off is part of the normal operation of an AC system. window ac unit 7000 btuThere are periods where the AC is turned off, such as when the proper temperature has been reached, and the pressure is adequate. portable air conditioning units 15 000 btuHowever, if the system is cycling on and off very frequently or more rapidly than normal, then that could be a sign that the cycling switch is not functioning properly.penguin portable ac units If either of the AC pressure switches fails, then the system will have a difficult time maintaining the pressure required to function properly. If the pressure is not right, then the AC system will not be able to produce the cold air required to adequately cool the cabin.

You may notice that the cabin takes a longer time than usual to reach the correct temperature, or may not even be able to reach the correct temperature at all. As the switches control the on/off function of the AC compressor, a failure in the switch can prevent the AC compressor from functioning at all. The compressor is what pumps refrigerant through the entire system. If it is not functioning, then the system can not operate, and will be unable to produce cold air. Because the AC pressure switches play such a vital role in ensuring the proper operation and service life of the AC system, any problems encountered with them should be addressed immediately to ensure the integrity of the system. If you suspect that one of your AC switches is bad or failing, have it diagnosed by a professional technician, such as one from YourMechanic. If necessary, they will be able to replace your AC pressure switch so that you can ensure the system remains functioning correctly.How to Install an AC Compressor in a Honda CRV

The compressor on your Honda's air conditioner is one of the three main components of the air conditioning system, along with the evaporator and the condenser. The compressor works like a pump that sends refrigerant through the system. Be sure to follow all federal and state laws pertaining to air conditioning refrigerant when installing a new air conditioning compressor in your Honda CRV. Removing the Old Compressor Take the CRV to a licensed air conditioning technician to have the air conditioning system discharged. 9Given the intense pressure the system is under and the environmental dangers of the refrigerant, this should never be attempted by an amateur.) Disconnect the car's negative battery cable by loosening its clamp nut with a wrench. Set the parking brake and block the rear wheels with chocks. Raise the car's front end using a jack, place jack stands under the car and and lower the car onto the stands. Take off the power steering drive belt by loosening the mounting bolts/locknuts, turning the adjuster bolts to loosen the belt tension and slipping the belt off its pulleys.

Use the same procedure to remove the alternator/compressor drive belt. Make a note of how the belts were routed on the pulleys; there is usually a printed diagram on the side of the engine compartment. Remove the battery ground strap bolt for the car's alternator and the cover from the radiator crossmember, then remove the upper radiator mounting brackets and rubber insulators. Remove the alternator's mounting bolts, disconnect the black wire and the electrical connector, and detach the harness clip to remove the alternator. Remove the splash shield from underneath the engine compartment by removing the fasteners from the right and left sides. Detach the coolant reservoir by disconnecting the reservoir hose from the radiator filler neck (plug the hose to keep it from leaking), by removing the mounting bolts and lifting the reservoir out of the engine compartment. Disconnect the compressor clutch wiring harness. Disconnect the refrigerant lines from the compressor and plug the open fittings to prevent contaminants from entering.

Remove the compressor's mounting bolts from the bracket, and guide the compressor carefully out the opening below the engine compartment. Installing the New Compressor Transfer the clutch from the old compressor to the new one if the old compressor does not have one, by unbolting the clutch from the old compressor and bolting it onto the new one. (This requires a special clutch holding tool available at auto parts stores.) Drain the refrigerant oil from the old compressor through the suction fitting into a graduated container and measure the amount. Subtract the amount of oil from 4-1/3 ounces to calculate the amount of oil you must add to the new compressor. Add the resulting amount to the compressor through the fill hole. Mount the new compressor onto its bracket and tighten the mounting bolts. Connect all lines and electrical connectors to the new compressor. Use new O-rings where the line fittings connect to the compressor. Re-connect all parts and components that were disconnected to access the compressor.

Have the air conditioning system evacuated, recharged and leak tested by the technician that discharged the system. "Honda Civic and CR-V Automotive Repair Manual"; Robert Maddox and John H. Haynes; How to Install an AC Compressor in a Honda CRV. The compressor on your Honda's air conditioner is one of the three... How to Troubleshoot the Air Conditioning in a Honda CR-V. How to Install an AC Compressor in a Honda CRV; Replace Air Conditioning Compressor; How to Replace the A/C Compressor in a Honda Accord; The compressor on your Honda's air conditioner is one of the three ... Your 2003 Honda CR-V uses Honda All ... Honda air conditioners do not add cold to the driving area. Air conditioner compressors, however, ... How to Troubleshoot the Air... How to Adjust the Clutch in a Honda CR-V. How to Install an AC Compressor in a Honda CRV. Testing and replacing a refrigerator's compressor relay is not a typical job for the do-it-yourselfer. How to Troubleshoot the Air Conditioning...