No, you should never attempt to run your residential air conditioning system with a known bad or non-working blower motor. Operating an air conditioner without an active indoor blower fan means that heat cannot be pulled from your home and transferred outdoors, causing the indoor evaporator coil to drop below freezing temperatures rapidly. As ambient humidity hits the freezing coil, it turns into a massive block of solid ice that can back up into the compressor and cause catastrophic, expensive liquid slugging and mechanical failure. Furthermore, running a seized or failing blower motor can overheat electrical windings and trip circuit breakers. You can troubleshoot by turning the system off immediately at your thermostat and main electrical panel. You can verify that it is safe to turn the AC back on only after a professional technician replaces the faulty blower motor.
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