How do I check if my outdoor unit is functioning correctly?
Apply 220 V AC between terminals L1 and L2 on the outdoor unit terminal plate, and verify the LED (red) illuminates. Short-circuit the T-RUN terminal to COM of TEST/T-RUN terminals; then compressor and fan motor should turn ON about 70 seconds after power is turned on.
From the official Sanyo Ahx0752 Series Split System Air Conditioner manual, page 46
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