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24
THREE PHASE MONITOR
Three-Phase units are equipped with monitors for motor protection. The
OceanAire Three-phase Monitor safeguards the unit against incorrect
compressor rotation, low-voltage and/or loss of power in any one of the
power legs. The monitor is installed in the control box and is equipped
with an LED for diagnosis of an improper electrical condition (see
diagrams below). When power is connected, the compressor WILL NOT
engage until the monitor start delay has timed out. If the
thermostat does not power up, an electrical condition may need to be
addressed. Remove the control box cover and observe the LED on the
phase monitor. The LED signals the following:
GREEN-BLINKING - Start delay, 120 sec.
GREEN - Proper Operation
RED/GREEN-BLINKING - signals reverse phase rotation. Switch any
two of the power leads for the unit, NOT THE MONITOR LEADS, and
re-start.
RED-BLINKING - signals improper voltage and/or phase loss. Correct
the power problem, then re-start the unit.
In the event of a power interruption, the unit will re-set to a start-up
condition. The Phase Monitor will not allow the unit to start until power
is corrected.
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