What It Means
Internal control board error within the remote controller.
Mitsubishi Electric All Systems
Mitsubishi Electric Error Code E1 – E2
Troubleshooting guide for the Mitsubishi Electric system fault E1 – E2.
ACLogics Fix Mitsubishi Electric code E1 – E2 See how ACLogics handles it → Fix E1 – E2 step-by-step
Possible Causes
- Remote controller circuit board malfunction.
- Remote controller internal hardware error.
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
Remote controller control board error.
All Recorded Causes
Verify Before Replacing Parts
- Confirm the exact Mitsubishi Electric model family and default context before acting on a generic code description.
- Start with line voltage, low voltage, and board output checks in sequence so the fault is isolated cleanly — the data plate flags the most likely cause listed above.
- Inspect connectors, relay outputs, and any recently replaced electrical parts for mismatch or loose fit, and verify 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.
