There are several potential reasons why the XT AC magnetic clutch may not be engaging.
Here are a few steps you can take to troubleshoot the issue:
- Check the electrical connection
The magnetic clutch needs a good electrical connection to engage.
Make sure the electrical connector is clean and free from corrosion, and that the wiring is not damaged. - Check the clutch coil:
The clutch coil is responsible for engaging the magnetic clutch.
Use a multimeter to test the coil’s resistance. If the resistance is too high or too low, the coil may be faulty and needs to be replaced. - Check the refrigerant levels:
If the refrigerant levels are too low, the system may not be able to build up enough pressure to engage the clutch. Check the refrigerant levels and recharge the system if necessary. - Check the compressor:
The compressor itself may be damaged or worn out, preventing the clutch from engaging. If this is the case, the compressor may need to be replaced. - Check the air gap between the compressor clutch plate and the compressor wheel.
To be able to do this, you will need a set of feeler gauges and look up how to use them (YouTube guide).
Magnetic Clutch Adjustment
The excerpt below from the Subaru factory service manual specifies the following tolerances as being acceptable:
Feeler Gauge Measurement
By measuring the gap with a feeler gauge you will be able to tell if there is an issue with your magnetic clutch. Too much of a gap and there wont be enough magnetic force to electro-magnetically engage the clutch.
Get a feeler gauge for your XT Magnetic Clutch
It’s important to note that fixing an air conditioning magnetic clutch can be a complex task and may require professional assistance.
If you are not comfortable troubleshooting the issue yourself, it’s best to seek the help of a qualified HVAC technician.