![background image](http://html1.mh-extra.com/html/carrier/69nt40-541-300/69nt40-541-300_operation-and-service_2563728053.webp)
T-318
3
−
21
Table 3-5 Controller Function Codes (Sheet 2 of 9)
Code
No.
TITLE
DESCRIPTION
Cd12 Compressor Suction
Port Pressure
The Compressor Suction Pressure Transducer reading is displayed.
Cd13
Condenser Pressure
Control (CPC)
Sensor
The Condenser Pressure Control Sensor reading is displayed.
Cd14 Compressor
Discharge Pressure
The Compressor Discharge Pressure Transducer reading is displayed.
Cd15 Unloader Valve
(On-Off)
Not used in this application
Cd16
Compressor Motor
Hour Meter / Switch
On Time
Records total hours of compressor run time. Total hours are recorded in incre-
ments of 10 hours (i.e., 3000 hours is displayed as 300).
/ Press ’Enter’ to display Start Switch ’ON’ time.
Cd17 Relative Humidity
(%)
Humidity sensor reading is displayed. This code displays the relative humidity, as
a percent value.
Cd18 Software Revision # The software revision number is displayed.
Cd19 Battery Check
This code checks the Controller/DataCORDER battery pack. While the test is run-
ning, “btest” will flash on the right display, followed by the result. “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.
Cd20 Config/Model #
This code indicates the dash number of the model for which the Controller is con-
figured (i.e., if the unit is a 69NT40-541-100, the display will show “41100”). To
display controller configuration database information, press ENTER. Values in
“CFYYMMDD” format are displayed if the controller was configured with a config-
uration card or with a valid OEM serial port configuration update; YYMMDD rep-
resents the publication date of the model configuration database.
Cd21
ML2i
−
Humidity
Water
Pump/Atomizer
Status
This code displays the status of the humidity water pump (
-----
, FWD, REV
or OFF). If not configured, the mode is permanently deactivated and will display
“
-----
.”
ML3
−
Humidity
Water Pump/Air
Pump Status
This code displays the status of the humidity water pump (
-----
, On, or
OFF). If not configured, the mode is permanently deactivated and will display
“
-----
.”
Cd22 Compressor State
The status of the compressor is displayed (high, low or off).
Cd23 Evaporator Fan
State
Displays the current evaporator fan state (high, low or off).
Cd24 Controlled
Atmosphere State
Displays the controlled atmosphere state (
−−−−−
, On or Off).
Cd25 Time Remaining
Until Defrost
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.
Cd26 Defrost Temperature
Sensor Reading
Defrost Temperature Sensor (DTS) reading is displayed.