MaxPower Corp OceanAire Portable - Manual (Page 19)

E. HIGH PRESSURE CONTROL
1. Remove cabinets right hand side panel.
2. Remove flare nut that secures capillary to the refrigeration system high pressure side. A built-in
schrader valve allows removal without dumping the refrigerant charge.
3. Remove two screws that retain high pressure switch.
4. Disconnect wire leads from compressor contactor and condensate pump safety switch.
5. Install new High Pressure Control, reversing the procedure.
To gain access to compressor and compressor run capacitor, remove left hand side panel.
TROUBLESHOOTING GUIDE
The following steps and procedures are recommended for correcting the problems indicated. Service,
other than routine maintenance, should be performed only by a qualified refrigeration serviceman.
PROBLEM: THE ENTIRE UNIT DOES NOT RUN.
1. CAUSE: POWER INTERRUPTION
REMEDY: Check external power supply. Look for blown fuses or tripped circuit breakers. Reset or
replace if needed.
2. (REASON) THERMOSTAT INOPERABLE.
REMEDY: Setting may be too high; Make sure setpoint is lower than room temperature, check and
reset. Remember, there is a 4 minute time delay between cycles. Thermostat may be defective...remove
and replace.
3. (CAUSE) ELECTRICAL PANEL:
a) 24 volt transformer defective; (b) contactor coil defective, contacts stuck open, burned or dirty; (c)
loose wires.
(REMEDY) Correct as follows: (a) Replace; (b) Correct or change; (c) Tighten connections
PROBLEM: EVAPORATOR FAN RUNS BUT COMPRESSOR AND CONDENSER FAN DO NOT
START
1. (REASON) Low Voltage.
(FIXING) Check power supply for voltage outside the range of 106-126 volts on the 115volt unit and
187-253 volts on the 208/230 volt unit.
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