Según manual LG PTAC:
Code 67: ODU fan motor not rotating or not proving rotation. Check fan motor wired correctly & fan spins freely. Could be failed motor, failed board, or motor failed causing board failure. Verify 310V DC on motor wires at empty plug terminals with motor plugged in. 0 VDC = Failed PCB. 310V DC = likely motor. Next: Unplug motor and manually spin fan (keep spinning): same wire tested, 0 VDC = motor failed and caused board failure. 14-30 VDC = good motor.
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