Mitsubishi Electric · Air Conditioning
The left lamp of the OPERATION INDICATOR blinks fourteen times or more, followed by a 2.5-second pause. This signifies an abnormality in the outdoor unit not covered by other specific codes.
Click steps to track your progress.
Turn OFF the power supply to the unit.
Check the stop valve and the 4-way valve for any obvious issues.
Use the failure mode recall function for the outdoor unit (refer to outdoor unit service manual) to check the abnormality in more detail.