Phase Sequencer
The unit with Scroll Compressor can only rotate in one direction. For this reason, a protective
device (phase protector) is fitted to prevent incorrect wiring of the electrical phases. When
the three phases are not connected correctly, the phase sequencer operates, and the unit
will not start.
This device is located in the control box of the outdoor unit.
The following table shows the LED indicator light for phase protector under normal operation
and fault conditions.
Troubleshooting must be performed by qualified personnel.