How does the AC compressor clutch relay work?
In all cases, these extra components are used to control the relay coil, which in itself controls the AC compressor clutch. This simple circuit can also be used to wire an older vehicle due to lack of parts and high costs. Here is how this circuit works. This circuit has one relay, a refrigerant pressure switch, and a micro switch.
Is there a failure of the AC relay?
Failure of the air conditioning relay becomes something that you’ll find on aging automobiles. On a 10 year old vehicle with 100,000 miles there’s a good chance the relay failed. Again, this becomes somewhat model specific. Jeep and Chrysler cars and trucks experience more failures in this department than other automobiles.
What does it mean when a / C compressor does not engage?
Step Action Value (s) Yes No DEFINITION: A/C compressor clutch will not engage when an A/C request has been made and no Powertrain DTC are set. 1 Were you sent here from the HVAC System Check (C60)? — Go to Step 2 Go to HVAC System Check (C60) 2 Turn the ignition switch to the OFF position.
What is the micro switch on a compressor?
The micro switch is a W O T or wide open throttle switch used to disengage the compressor clutch during wide open throttle conditions. This is done to protect the compressor from damage at high engine speeds. Electrical current flows from the 12 volt power feed to the fuse. Then current flows to terminal…
What happens if the relay on a compressor stops working?
Relay is an electrical switch that tells your compressor to turn on or off depending on the temperature inside the unit. If the relay stops working, the compressor will also stop. The only solution to pull you out from this miserly is the bypass of the relay system.
Why do I need a relay on my refridgerator?
The compressor turns on and off periodically for an effective cooling process, and for this very reason, a relay is used to assist the compressor while functioning. Relay is an electrical switch that tells your compressor to turn on or off depending on the temperature inside the unit. If the relay stops working, the compressor will also stop.
How to change the start relay of the refrigerator compressor?
How to change the start relay As already mentioned, there are different types of relays. When it is necessary to make a change, do not try to improvise or make use of not recommended solutions. This can cause problems, such as the burn-out of the compressor.
How to troubleshoot a PTC relay in a compressor?
Troubleshooting of a PTC relay can be done with an ohmmeter. The relay must be removed from the compressor hermetic terminal to check the resis- tance of the PTC material. The resis- tance of the PTC material should be from 2 ohms to 5 ohms. If the resistance is less than 2 ohms or greater than 5 ohms, the relay should be replaced. Conclusion