Quick-Start Operations Checklist Passport I/O Control Operations Manual
12 L-2231 ENGLISH
FAILSAFE LEVEL 2
This level provides the failsafe actions of levels 0 and 1, plus all faults are displayed. The system shuts down for 2 minutes or
until the fault is cleared, whichever is longer. The system restarts when the fault is cleared.
FAILSAFE LEVEL 3
This level provides the failsafe actions of levels 0, 1, and 2, plus the system will lockout after four consecutive HPF or LPF
faults, and you can clear the lockout. The system shuts down for two minutes or until the fault is cleared, whichever is longer. To
clear the lockout, press the Power button once to Off Mode and press it again to On Mode.
QUICK-START OPERATIONS CHECKLIST
1. Ensure seawater-intake ball valve (seacock) is open.
2. Make sure the control is powered OFF.
3. Turn on the air conditioner circuit breaker. If the seawater pump has its own circuit breaker, turn that on also.
4. Turn the control ON.
5. Press the Fan button. Verify that the fan is running and that there is steady airflow out of the supply-air grille.
6. Select a temperature set point lower than the current cabin temperature. This starts the compressor and seawater
pump.
7. Check for a steady solid stream of water from the overboard discharge.
8. Verify that there is steady airflow out of the supply-air grille.
If the unit does not appear to be operating properly, refer to the guidelines in “TROUBLESHOOTING” on page 12.
TROUBLESHOOTING
GENERAL TROUBLESHOOTING
See also “Digital-Controls Troubleshooting” on page 14.
IMPORTANT
Do not turn the unit off then immediately turn it back on. Allow at least 30 seconds for refrigerant pressure to equalize.
Table 3: General Troubleshooting
PROBLEM POSSIBLE REASON/SOLUTION
System will not start. 1. Air conditioner circuit breaker is off. Turn circuit breaker on at ship’s panel.
2. Digital control is not turned on. Press the Power button.
3. Wrong wiring at terminal strip. Check wiring diagram; correct if necessary.
4. Input-line voltage is insufficient. Check power source (shore/generator) for proper
voltage. Check wiring and terminals for proper sizes and connections. Verify with a
volt-meter that the power at the unit is the same as the power source.
5. Push-on connectors or butt splices became disconnected during installation.
Disconnect power supply and open electric box, check wiring diagram, correct if
necessary.
Fan is not running. Check “Digital-Controls Troubleshooting” on page 14.
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