20
EN
Operation
Parameter
Name
DX
CW
Factory Default
Parameter Range
P-20
Air Filter Cleaning/
Replacement Timer
Setting
x
x
0
0= OFF
10–250: Displays the elapsed time since the timer
was started or reset.
Establish a reminder to clean or replace the air filter.
• The parameter entered represents the operating hours number times 10 hours. Select the
number of operating hours until the filter reminder appears.
• Parameter choices are between 10 (100 hours) and 250 (2500 hours).
• Dometic recommends checking the air filter at least every 500 hours of operation.
I
Available only in software version A21 and newer.
P-21
Filter Cleaning/
Replacement Timer
Value & Reset
x
x
0
Displays the elapsed time
(in hours x10) since the timer was started or reset.
When this parameter value reaches the value set in parameter P-20, FIL flashes on the display
every 10 seconds until cleared. Press either the
Up
or
Down
button to reset the value to 0,
restart the timer, and clear the reminder.
I
Available only in software version A21 and newer.
P-22
Voltage Calibration
x
x
AC Voltage
Adjust to match the accurate voltage reading.
Displays a live reading of the voltage being read by the circuit board. Adjust by pressing the
Up or Down buttons. Calibrating this parameter provides a more accurate voltage level when
calculating low voltage for parameter P-7. Use a reliable voltmeter during adjustment.
I
Available only in software version A21 and newer.
P-23
Auto Mode Heat
Differential
x
x
OFF
OFF
On = 4 °F and 40 °F
This parameter creates a larger temperature differential between the cooling and heating
operation in AUTOMATIC mode. In AUTOMATIC Mode with P-23 set to OFF, the Passport
control will maintain a single set point, only switching between cooling and heating when a
4 °F (2 °C) change in temperature occurs.
Using this parameter creates a new secondary heating set point anywhere from 4 °F to 40 °F
below the cooling set point so the system can maintain a wider range of temperatures without
unnecessarily running the air conditioning system.
I
Available only in software version A25 and newer.
7 .3 .6 Identifying Programming Fault Codes
10
Identifying Programming Fault Codes
To protect the Passport control, certain fault conditions
trigger a lockout that shuts down the Passport control. After
the repair of the reason or the fault, the Passport control
will restart. The type of lockout associated with the fault
depends on the type of fault detected (see the “Fault and
Status Codes” on page 21 table) in combination with the
level of protection (see the “Fail Safe Levels” on page 21
table) programmed for the P-5 parameter (see”Selecting a
Parameter” on page 17).
