OCEANAIRE PWC Series, Manual

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18
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 thermostat wires, faulty thermostat or transformer/contactor.
REMEDY : Check connections, re-seat connectors. Thermostat may be defective...remove
and replace. Check transformer and/or contactor(s)...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.
Note — there is a time delay for the compressor
CAUSE: Thermostat — Loose thermostat wires
REMEDY: Examine the thermostat sub-base for corrosion, and/or loose thermostat wires.
CAUSE: Condensate Alarm Light
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. Inadequate/turned off condenser water supply.
REMEDY: Verify condenser water supply. Check High Pressure Cut-Out Switch.
Press Reset (RED Button, near hose connections). Re-start unit.
CAUSE: Supply Voltage. Check power supply for voltage outside the range
•
115 volt units (106-126)
•
208/230 volt units (187-253)
•
460 volt units (414-506)
REMEDY: Have power checked by electrician and repaired.
CAUSE: Transformer shows open coil circuit failure.
REMEDY: Replace line voltage/low voltage transformer.
CAUSE: Compressor Contactor failure
REMEDY: Replace compressor contactor.
CAUSE: Fan Contactor Failure
REMEDY: Replace fan contactor