Carrier PrimeLINE 69NT40-561-200 Operation And Service Manual page 105

When initiated via communications, a pre-trip test may not be interrupted with an arrow key, but the
pre-trip test can be terminated with the PRE-TRIP key.
1. Press the PRE-TRIP key to access the pre-trip test selection menu.
2. TO RUN AN AUTOMATIC TEST: Scroll through the selections by pressing the UP ARROW or DOWN
ARROW keys to display AUTO, AUTO 1, AUTO 2 or AUTO 3 as desired, then press ENTER.
a. The unit will execute the series of tests without any need for direct user interface. These tests vary in
length, depending on the component under test.
b. While tests are running, "P#-#" will appear on the left display; the #'s indicate the test number and sub-
test. The right display will show a countdown time in minutes and seconds, indicating the amount of time
remaining in the test.
When a failure occurs during automatic testing, the unit will suspend operation awaiting oper-
ator intervention.
When an automatic test fails, it will be repeated once. A repeated test failure will cause "FAIL" to be
shown on the right display, with the corresponding test number to the left.
The user may then press the DOWN ARROW to repeat the test, the UP ARROW to skip to the next test,
or the PRE-TRIP key to terminate testing. The unit will wait indefinitely or until the user manually enters
a command.
When pre-trip test Auto2 runs to completion without being interrupted, the unit will terminate
pre-trip and display "Auto 2" "end." The unit will suspend operation until the user depresses
the ENTER key!
When an Auto 1 pre-trip test runs to completion without a failure, the unit will exit pre-trip mode and
return to normal control operation. However, dehumidification and bulb mode must be reactivated man-
ually if required.
3. TO RUN AN INDIVIDUAL TEST: Scroll through the selections by pressing the UP ARROW or DOWN
ARROW keys to display an individual test code. Press ENTER when the desired test code is displayed.
a. Individually selected tests, other than the LED/Display test, will perform the operations necessary to ver-
ify the operation of the component. At the conclusion, PASS or FAIL will be displayed. This message will
remain displayed for up to three minutes, during which time a user may select another test. If the three
minute time period expires, the unit will terminate pre-trip and return to control mode operation.
b. While the tests are being executed, the user may terminate the pre-trip diagnostics by pressing and
holding the PRE-TRIP key. The unit will then resume normal operation. If the user decides to terminate a
test but remain at the test selection menu, the user may press the UP ARROW key. When this is done,
all test outputs will be de-energized and the test selection menu will be displayed.
c. During pre-trip testing, current limiting and pressure limiting are both active, except during P-7 (High
Pressure Switch Testing) when pressure limiting is turned off.
4. Pre-Trip Test Results
At the end of the pre-trip test selection menu, the message "P," "rSLts" (pre-trip results) will be dis-
played. Pressing the ENTER key will allow the user to see the results for all subtests (i.e., 1-0, 1-1, etc).
The results will be displayed as "PASS" or "FAIL" for all the tests run to completion since power up. If a
test has not been run since power up, "- - - - -" will be displayed.
Once all Pre-test activity is completed, dehumidification and bulb mode must be reactivated manually if
required.
CAUTION
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CAUTION
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