What would cause no power to AC compressor?
Capacitors – In many cases, compressor problems are caused by faulty or broken capacitors. The most common issue is that the refrigerant is liquid instead of gas when it gets to the compressor inlet. Under these circumstances, the compressor may still run, but the air conditioner won’t cool the air.
How do I know if my AC compressor relay is bad?
Signs of a Bad or Failing AC Compressor Relay
- 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.
How do I test my AC compressor relay?
How Do I Check an AC Clutch 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.
How do you check a AC compressor fuse?
The best way to test for a blown fuse is by using a voltmeter.
- To verify that you have a blown fuse on hand, the first step is to locate the disconnect box.
- Lift or swing open the outer and inner cover of the disconnect box to expose the cables.
- Check the voltmeter to make sure that it is functioning properly.
Do AC units have a reset button?
But if you’re wondering where is the reset button or switch on the air conditioner unit, look for a small and red button or switch on the air conditioner. If you don’t find any reset button, your AC probably doesn’t have one, and to reset your air conditioner, you’ll have to do it manually.
What to do if your AC compressor has no power?
Looks like the A/C clutch is wire 93 that goes right to the relay. All other switches turn the relay on/off, so the first thing I’d do is make sure the relay has power and then jump to top make sure the clutch comes on. If it does, the wiring to the clutch is good. Then you have a bad relay or wiring on the other side of the relay.
Where is the power to the AC compressor?
No power to AC compressor. Power is at switch on dashboard, but can’t trace power past switch. What wires from switch take power to the compressor. Pressure switches appear to be closed.
What happens when the a / C compressor goes out?
The body controller will monitor the a/c system pressure through the high pressure sensor. Once the pressure is about 300 psi it will tell the engine to turn the fan on. If the a/c pressure continues to rise over about 350 the body controller will log an a/c high pressure fault which will lock out the a/c operation until the next key cycle.
Where does the power for the compressor clutch come from?
Power for the compressor clutch comes from the relay in the fuse panel. The pressure switches are on a ground circuit. You can unplug the wire and jump across with a paper clip to test if the pressure switches are closed. zircon Thanks this. Thanks, SL3406. Had actually checked that already,and that’s not the problem.