![background image](http://html1.mh-extra.com/html/carrier/69nt40-541-300/69nt40-541-300_operation-and-service_2563728067.webp)
T-318
3
−
35
Table 3-6 Controller Alarm Indications (Sheet 6 of 6)
NOTE
If the controller is configured for four probes without a DataCORDER, the DataCORDER alarms AL70 and
AL71 will be processed as Controller alarms AL70 and AL71. Refer to Table 3-10, page 3
ERR
#
Internal
Microprocessor
Failure
The controller performs self
−
check routines. If an internal failure occurs, an “ERR”
alarm will appear on the display. This is an indication the controller needs to be re-
placed.
ERROR
DESCRIPTION
ERR 0
−
RAM failure
Indicates that the controller working memory has failed.
ERR 1
−
Program Memory
failure
Indicates a problem with the controller program.
ERR 2
−
Watchdog
time
−
out
The controller program has entered a mode whereby
the controller program has stopped executing.
ERR 3
−
N/A
N/A
ERR 4
−
N/A
N/A
ERR 5
−
A
−
D failure
The controller’s Analog to Digital (A
−
D) converter has
failed.
ERR 6
−
IO Board failure
Internal program/update failure.
ERR 7
−
Controller failure
Internal version/firmware incompatible.
ERR 8
−
DataCORDER
failure
Internal DataCORDER memory failure.
ERR 9
−
Controller failure
Internal controller memory failure.
In the event that a failure occurs and the display cannot be updated, the status
LED will indicate the appropriate ERR code using Morse code as shown below.
E R R 0 to 9
ERR0 = . .
−
. .
−
.
−−−−−
ERR1 = . .
−
. .
−
. .
−−−−
ERR2 = . .
−
. .
−
. . .
−−−
ERR3 = . .
−
. .
−
. . . .
−−
ERR4 = . .
−
. .
−
. . . . .
−
ERR5 = . .
−
. .
−
. . . . . .
ERR6 = . .
−
. .
−
.
−
. . . .
ERR7 = . .
−
. .
−
.
−−
. . .
ERR8 = . .
−
. .
−
.
−−−
. .
ERR9 = . .
−
. .
−
.
−−−−
.
Entr
StPt
Enter Set point
(Press Arrow &
Enter)
The controller is prompting the operator to enter a set point.
LO
Low Main Voltage
(Function Codes
Cd27
−
38 disabled
and NO alarm
stored.)
This message will be alternately displayed with the set point whenever the supply
voltage is less than 75% of its proper value.