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steven71Jul 31, 2025
What to do if POWER lamp/Upper lamp ashes 4 times on Mitsubishi Electric Air Conditioner?
- Rrobert77Jul 31, 2025
If the POWER/Upper lamp on your Mitsubishi Electric Air Conditioner flashes four times, it indicates an issue with the indoor control system. The suggested solution is to replace the indoor electronic control P.C. board.