What It Means
Outdoor board LED flash diagnostic for overcurrent relay (51CM) trip.
Mitsubishi Electric All Systems
Mitsubishi Electric Error Code LED LD5
(Flash)
Troubleshooting guide for the Mitsubishi Electric system fault LED LD5 (Flash).
ACLogics Fix Mitsubishi Electric code LED LD5 (Flash) See how ACLogics handles it → Fix LED LD5 (Flash) step-by-step
Possible Causes
- Compressor overcurrent relay (51CM) operation.
- Compressor motor high current draw overload.
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.
New to this code? Click to see why this happens
Full Diagnosis
Over current relay (51CM) operation.
All Recorded Causes
Verify Before Replacing Parts
- Confirm the exact Mitsubishi Electric 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 Mitsubishi Electric code is on?
ACLogics has guided diagnostics for 73 Mitsubishi Electric fault codes and asks the right questions to narrow it down.
