How do you test an outside air compressor?

How do you test an outside air compressor?

Here is how to check the compressor motor if you suspect it has failed;

  1. Disconnect power.
  2. Remove the top of the outdoor condensing unit.
  3. Unplug the 3-prong plug on the compressor.
  4. Set your multimeter to ohms.
  5. Measure and record the resistance (ohms) measurement of each winding.

Where is the AC relay located on a GMC CK?

The AC Relay is located external to the controller. The coil of the AC relay is powered from the ECU, located on the left side of the engine bay. The High Pressure, Cycling, and Lo pressure refrigerant switches also go to the ECU. When all conditions are met, the ECU provides power to the AC relay coil, and the AC compressor clutch is energized.

How can I tell if my AC compressor relay has failed?

Another symptom that the AC relay has potentially failed is that there will be no cold air at all from the AC. If the relay fails, the compressor will not operate and the AC system will be unable to produce any cold air at all. While there are several reasons as to why an AC may stop producing cold air, a failed relay can be one of the most common.

How does the AC compressor relay work on a car?

Almost every single electrical system on a car is powered through some kind of switch or electrical relay, and the AC system and compressor are no exception. 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.

How is the recirc door closed on a GMC CK?

The functions of the Recirc door are controlled by detent switches that are part of the Blend and Mode dials, and the AC Switch. When Switched +12V is present the Resirc door is closed by one of the following two conditions: ( (Recirc switch depressed) or (not Defog, plus Max AC, plus AC on)).

The AC Relay is located external to the controller. The coil of the AC relay is powered from the ECU, located on the left side of the engine bay. The High Pressure, Cycling, and Lo pressure refrigerant switches also go to the ECU. When all conditions are met, the ECU provides power to the AC relay coil, and the AC compressor clutch is energized.

Where is the relay on an AC compressor?

In most cases, the relay is mounted on the fender well or fire wall. The relay in a typical A/C control installation has a three-wire connection. One wire is a ground, one wire is the input from the interior control panel and switches, and one wire is the power feed to the A/C compressor clutch.

Why is my AC clutch relay not working?

One wire should be “hot,” if not, the relay is not sending power to the A/C compressor. If it is, then the relay is functioning correctly and the A/C clutch is bad. To bypass the relay, plug the A/C back in. Return to the relay.

The functions of the Recirc door are controlled by detent switches that are part of the Blend and Mode dials, and the AC Switch. When Switched +12V is present the Resirc door is closed by one of the following two conditions: ( (Recirc switch depressed) or (not Defog, plus Max AC, plus AC on)).