12
EN
Operation
7 .2 Understanding the Service
Utility Commands (DX Systems Only)
DX systems include service utility commands. This
section explains the self-test program, the hours meter,
and the service history log.
7 .2 .1 Self-Test Program
The Passport I/O software contains a self-test program
to facilitate factory testing of the entire air conditioning
system. Once activated, the self-test program continues
the test cycle until an interruption in the AC power
occurs or the
Power
button is pressed once to return
the system to OFF mode.
7 .2 .2 Hour Meter
The hour meter provides a way to judge a compressor’s
longevity based on actual run time.
• The maximum recordable time is 65,536 hours, at
which point the meter stops and can only be reset by
a service technician.
• The Passport control saves the total cycle time at
six-minute intervals while the compressor runs
continuously.
• The Passport control discards a cycle time of less
than six minutes to conserve memory and allow for
flexibility.
7 .2 .3 Service History Log
When a fault occurs in the system, a one-hour timer
starts.
• Three consecutive faults within that hour cause a
system shut down and lockout, and a fault code
shows on the display.
• During the timed hour, to conserve memory, the
Passport control does not record recurring faults of
the same type.
• Continuous operation for one hour without the same
recurring fault clears the fault counter, but the event
remains in the service history log until overwritten.
• If a different fault occurs during the hour, it shows on
the service history log.
The service history log keeps these faults:
• High Refrigerant Pressure (HPF)
• Low Refrigerant Pressure (LPF)
• Air Sensor Failure (ASF)
• Low AC Voltage (LAC)
• Pump or Loss of Seawater (PLF)
The Passport controls record the eight most recent faults.
7 .3 Turning on the Passport Control
To power on the Passport control, press and
immediately release the
Power
button.
NOTICE:
Avoid unintentionally entering the
Programming mode. Programming mode activates
when the
Power
button is pressed and held for more
than five seconds. After unintentionally entering
Programming mode, any subsequent presses of the
Up
or
Down
buttons will change the P-1 parameter setting
since it is the first parameter shown after entering this
mode. The P-1 parameter changes the operating mode
to Cool-Only, Heat-Only, or Automatic, which could
result in improper system operation. Always use care
when in Programming mode. For further information,
see “Choosing the Passport Control Operation” on
page 12 and “Programming the Passport Control” on
page 16.
7 .4 Choosing the Passport Control
Operation
The indicators represent the different modes of the
Passport control. The Compact Passport control model
indicators are shown in this section. See “Using the
Passport Control Display Panel” on page 14 for more
detail on mode operation. See “Available Modes and
Options for Operation” on page 13 to select a mode.
