Possible causes are low refrigerant, a faulty pressure switch, a faulty control switch or a faulty computer. If power and ground are found here, move to the next step. With the engine running, and the A/C controls in the max cooling positions, test for power at the compressor clutch electrical connector.
Where is the relay switch on my AC unit?
https://www.youtube.com/watch?v=y4sx84SHMlw
How do I know if my AC relay switch is bad?
- Inconsistent cooling. The AC compressor is powered by the relay. ...
- AC compressor is not turning on. One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all. ...
- No cold air.
What is a relay switch for AC?
An air conditioner uses relays to switch the system's high-voltage parts on and off. The relay contains a low-voltage coil and a high-voltage switch, sometimes called "contact points." When the thermostat switches on, a low-voltage signal energizes the appropriate relay.
How do you wire an AC relay?
https://www.youtube.com/watch?v=d_Soy3hcmsQ
How do you test an air conditioner relay?
- Locate the Relay. Locate the air conditioner clutch relay by tracing the wire connection from the air conditioner compressor plug-in to the relay. ...
- Check Function. Using a 12-volt test light, connect the alligator clip to the negative terminal on the battery. ...
- Bypass the Relay.
Which relay is for the AC?
The AC compressor relay is responsible for supplying power to the AC compressor and clutch. Without this relay, the AC compressor will not have power and the AC system will not function.Jan 6, 2016