Tech replaced constant torque blower and found normal operation. Customer also requested diagnosing school room 314 mini split. Tech added commercial service call fee. Tech found system running AC with a heat call. Mini split is ran off a Vision Pro connected to an adapter. Adapter has no O wire going to it therefore it cannot differentiate between a heat and cool call. Tech re wired and reprogrammed thermostat for a conventional system and found system running heat and AC modes. Adapter recognizes y for cool and w for heat and system runs accordingly. Tech also verified the heat pump runs in heat mode with a W call.