OCEANAIRE OWC6012QC, Engineering, Installation And Service Manual

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TROUBLESHOOTING GUIDE
The following steps and procedures are recommended for correcting the
problems indicated. In the event that the problem can not be corrected,
service may be required.
SERVICE SHOULD BE PERFORMED BY A QUALIFIED AIR CONDITIONING
SERVICE TECHNICIAN
PROBLEM: UNIT DOES NOT POWER UP
CAUSE: Power interruption
REMEDY: Check LCDI (if equipped) and reset. Check external power supply
making sure that the disconnect is ON. Check for blown fuses or tripped
circuit breakers. Reset or replace (as needed).
PROBLEM: NO DISPLAY ON THERMOSTAT AFTER POWER “ON”
CAUSE: Loose display cable, faulty thermostat or faulty power module
REMEDY : Check display cable, re-seat connectors. Thermostat may be
defective...remove and replace. Power module may be defective...remove
and replace.
PROBLEM: EVAPORATOR FAN RUNS BUT COMPRESSOR DOES NOT START
CAUSE: Thermostat — set point is too high.
REMEDY: Make sure set-point is lower than room temperature. Look for a
red dot to the right of the temperature displayed for cooling.
Note — there is a time delay for the compressor
CAUSE: Thermostat — Loose display cable
REMEDY: Examine the thermostat for a loose cable connection. Re-seat the
display cable from thermostat to power module.
CAUSE: Condensate Alarm —”CON” is displayed.
REMEDY: Check condensate pump and make sure pump is working
properly and that there is no kink in the drain line from the pump.
CAUSE: High Pressure Cut-Out —”CON” is displayed. Inadequate/turned off
condenser water supply.
REMEDY: Verify condenser water supply. Check High Pressure Cut-Out
Switch. Press Reset (RED Button in recessed cubby). Re-start unit.
CAUSE: Low Voltage — “LAC” is displayed. Check power supply for
acceptable range.
REMEDY: Have power checked by electrician and repaired.
CAUSE: Compressor contactor failure
REMEDY: Replace compressor contactor
CAUSE: Fan Relay Failure
REMEDY: Replace Power Module
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