The Problem:
* AC Control Panel Repaired: This means the issue was likely with the panel itself (buttons, switches, etc.) and not the underlying AC system.
* Compressor Still Turns On: This suggests that the AC system is still receiving a signal to activate the compressor even though the control panel has been repaired.
Possible Causes:
1. Wiring Issue: There could be a short circuit or broken wire somewhere in the wiring that runs from the AC control panel to the compressor. This could be sending a signal to turn the compressor on even when you don't want it to.
2. Relay Problem: The AC system uses relays to control the compressor. A faulty relay could be stuck in the "on" position, causing the compressor to run even when the control panel is off.
3. Pressure Switch Malfunction: A pressure switch monitors the refrigerant pressure in the system. If it's malfunctioning, it might be sending the wrong signal to the compressor, causing it to turn on when it shouldn't.
4. Faulty AC Control Module: While you repaired the control *panel*, there's also an AC control *module* which is essentially the brains of the system. A malfunctioning module could be causing the compressor to run even when it shouldn't.
Troubleshooting Steps:
1. Inspect Wiring: Carefully inspect the wiring between the AC control panel and the compressor. Look for any frayed wires, loose connections, or signs of damage.
2. Check Relays: Locate the AC compressor relay and check it for proper operation. It might need to be replaced.
3. Test Pressure Switch: If you have the tools and knowledge, you can test the pressure switch to ensure it's working correctly.
4. Consult a Mechanic: If you're not comfortable troubleshooting electrical systems yourself, it's best to consult a qualified mechanic. They have the tools and experience to diagnose the issue accurately and make the necessary repairs.
Safety Note:
* Refrigerant: Be aware that automotive AC systems use refrigerant, which can be harmful if not handled properly. If you're not familiar with working on AC systems, it's best to leave it to a professional.
Additional Information:
To help diagnose the issue, provide more details:
* Symptoms: Does the compressor run constantly, even when the AC is off? Does the AC blow cold air at all?
* Repair Details: What exactly was repaired on the AC control panel?
* Previous Issues: Did you have any AC issues prior to the control panel repair?
I hope this helps you narrow down the problem. Good luck!
