Operation Lamp Off And Timer Lamp Flashes; Operation Lamp On And Timer Lamp Flashes; Operation Lamp Flashes, Timer Lamp Flashes - Midea MSC-18HRIN1 Service Manual

13.6 Operation lamp off and Timer lamp flashes

13.7 Operation lamp on and Timer lamp flashes

EEROM error, indoor PCB is defective.

13.8 Operation lamp flashes, Timer lamp flashes

This is alarm signal when the main chip can't detect over-zero signal. When such failure occurs, the
main control board must have fault.
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Service manual