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Three Phase Monitor
Three-Phase units can be 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 thermostat WILL
NOT power up, until the monitor start delay has been timed out. If the
thermostat does not power up, an electrical condition may need to be
addressed. Remove the control box cover and check the observe the
LED on the phase monitor. The LED signals the following:
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.
GREEN-BLINKING - Start delay, 120 sec.
NOTICE
UNIT IS EQUIPPED WITH 3-PHASE POWER
MONITOR (WITH LED)
LED INDICATION
GREEN (BLINKING) = START DELAY
GREEN = PROPER OPERATION
RED/GREEN/BLINKING = PHASE REVERSAL
RED (BLINKING) = IMPROPER LEG VOLTAGE
OR PHASE LOSS
START DELAY = 120 SECONDS
LED
