Mitsubishi Electric MVZ-A12 AA4 Manuel D'installation page 10

Step. 6 Remove the (4) screws indicated in the image along with the
brackets that secure the coil.
Step. 7 Slide the entire fan assembly out from the cabinet.
Step.8 Remove the electrical enclosure from the fan assembly.
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Step.9 Rotate the blower assembly 180°. The motor should now be
on the opposite side.
Step.10 Reinstall the enclosure for the return air temperature
sensor on the blower assembly on the opposite side from its original
location.
MOTOR
ON
LEFT
Step.11 Reinsert the blower assembly with the motor now on the left
into the air handler cabinet and reuse the (2) screws that secured
the fan assembly in position. Reroute the (2) connectors for the
motor back into the enclosure and reconnect.
NOTE: The wiring harness might have to be removed from the
plastic retainers mounted to the motor bracket in order to have
suffi cient length to reach the electrical enclosure mounted to the fan
assembly. Ensure wiring harness is secure so it cannot be pulled
into the fan. Reroute the return air thermistor connector back into the
electrical enclosure and reconnect.