What It Means
Compressor shell or internal motor temperature protection trip.
York All Systems
York Error Code P3
Troubleshooting guide for the York system fault P3.
Possible Causes
- High operating compressor ratio or low suction cooling gas.
- Refrigerant undercharge or severe system restriction.
- Compressor internal mechanical wear or lubrication failure.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
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Full Diagnosis
Compressor Temp. Protection.
All Recorded Causes
Verify Before Replacing Parts
- Confirm the exact York model family and default context before acting on a generic code description.
- Verify current draw, overload status, and control signal before condemning the compressor or drive, given that the most likely cause listed above.
- Look for upstream conditions such as airflow or charge issues that may be pushing the compressor into protection, and check the next candidate on the list.
- After the correction, run the system long enough to confirm the default fault does not return under normal load.
Not sure which system this York code is on?
ACLogics has guided diagnostics for 60 York fault codes and asks the right questions to narrow it down.
