Carrier 69NT40-489-100 Series, Operation And Service Manual

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133
T-305
12.14.1 Programming Procedure
To load new software into the module, the programming
card is inserted into the programming/software port.
WARNING
The control box must be OFF whenever a
programming card is inserted or removed
from the programming/software port.
Procedure for loading Operational Software:
NOTE
The CA start-stop switch (CAS) should remain
ON during this procedure.
a. Turn unit OFF, via refrigeration start-stop switch (ST).
b. Insert the programming card for Operational Soft-
ware into the programming/software port. (See
Figure 84, page 134)
c. Turn unit ON, via refrigeration start-stop switch (ST).
d. The Display module will read:
(1.) If the correct card is being used: the Display will
alternate back and forth between the messages
“rEV XXXX” and “Press EntR”.
(2.) If a defective card is being used: the Display will
blink the message “bAd CArd”. (Turn
refrigeration start-stop switch [ST] OFF and
remove the card.)
e. Press the ENTER key on the keypad.
f. The Display will show the message “Pro SoFt”. This
message will last for up to one minute.
g. The Display module will read:
(1.) When the software loading has successfully
completed: the Display will show the message
“Pro donE”.
(2.) If a problem occurs while loading the software:
the Display will blink the message “Pro FAIL” or
“bad 12V”. (Turn refrigeration start-stop switch
OFF and remove the card.)
h. Turn unit OFF, via refrigeration start-stop switch (ST).
i. Remove the programming card from the program-
ming/software port.
j. Turn unit ON, via refrigeration start-stop switch (ST).
12.14.2 Troubleshooting
A group of test points (tp) is provided on the Controller
(see Figure 84, page 134 item 3) for trouble-shooting
electrical circuits (refer to Section 11). A description of
the test points is as follows:
NOTE
Use a digital voltmeter to measure AC voltage be-
tween TP’s and ground (TP9).
TP2
This test point enables the user to check if the internal
protector for the air compressor motor (IP--AM) is open or
closed.
TP6
This test point enables the user to check if the drain
solenoid valves #1 & #2 (DS1 & DS2) contact is open or
closed.
TP7
This test point enables the user to check if the oxygen
solenoid valve contact is open or closed.
TP9
This test point is the chassis (unit frame) ground
connection.
TP10
This test point enables the user to check if the nitrogen
purity valve contact is energized.