Carrier 69NT40-561-399 Operation And Service Manual page 61

CODE # TITLE
Cd12 Compressor Suction Pres-
sure
Cd14 Compressor Discharge Pres-
sure
Cd15 Digital Unloader Valve
Cd16 Compressor Motor Hour Me-
ter/Unit Run Time Hour Meter
Cd17 Relative Humidity %
Cd18 Software Revision #
Cd19 Battery Check
Cd20 Config/Model #
Cd21 Capacity Mode
Cd22 Compressor State
Cd23 Evaporator Fan
Cd25 Compressor Run Time Re-
maining Until Defrost
Cd26 Defrost Temperature Sensor
Reading
Table 4–3 Controller Function Codes (Continued)
DESCRIPTION
Reading for evaporator pressure transducer (EPT) is shown on the left
display; Press ENTER at Cd12 to show reading for compressor suc-
tion port pressure on right display.
Compressor discharges pressure transducer reading is displayed.
The status of the valve is displayed (Open - Closed).
This code displays the compressor motor hours. User can view unit
run time by pressing the ENTER key while in Cd16. Total hours are re-
corded in increments of 10 hours (i.e., 3000 hours is displayed as 300).
The Compressor Motor Hour Meter display can be reset to 0 by press-
ing and holding the ENTER key for 5 seconds. The Unit Run Time
Hour Meter cannot be reset.
Humidity sensor reading is displayed. This code displays the relative
humidity, as a percent value.
The software revision number is displayed.
This code checks the Controller/DataCORDER battery pack. While the
test is running, "btest" will flash on the right display, followed by the re-
sult. "PASS" will be displayed for battery voltages greater than 7.0 volts.
"FAIL" will be displayed for battery voltages between 4.5 and 7.0 volts,
and "-----" will be displayed for battery voltages less than 4.5 volts. After
the result is displayed for four seconds, "btest" will again be displayed,
and the user may continue to scroll through the various codes.
This code indicates the dash number of the model for which the Con-
troller is configured (i.e., if the unit is a 69NT40-551-100, the display
will show "51100"). To display controller configuration database infor-
mation, press ENTER. Values in "CFYYMMDD" format are displayed
if the controller was configured with a configuration card or with a valid
OEM serial port configuration update; YYMMDD represents the publi-
cation date of the model configuration database.
The mode of operation is displayed (Unloaded - Standard - Econo-
mized).
The status of the compressor is displayed (OFF, On).
Displays the current evaporator fan state (OFF, LOW, HIGH).
This code displays the time remaining until the unit goes into defrost
(in tenths of an hour). This value is based on the actual accumulated
compressor running time.
Defrost temperature sensor reading is displayed.
4–27 T-365