T-354
4–26
AL65
Discharge Pressure
Transducer Failure
Alarm 65 is triggered by a compressor discharge transducer reading outside the
valid range of 73.20cm Hg (30in Hg) to 32.34Kg/cm
2
(460psig). This is a display
alarm and has no associated failure action.
AL66
Suction Pressure
Transducer Failure
Alarm 66 is triggered by a suction pressure transducer reading outside the valid
range of 73.20cm Hg (30in Hg) to 32.34Kg/cm
2
(460psig). This is a display alarm
and has no associated failure action.
AL67
Humidity Sensor
Failure
Alarm 67 is triggered by a humidity sensor reading outside the valid range of 0%
to 100% relative humidity. If alarm AL67 is triggered when the dehumidification
mode is activated, then the dehumidification mode will be deactivated.
AL68
Condenser Pressure
Transducer Failure
Alarm 68 is triggered by a condenser pressure transducer reading outside the val-
id range of 73.20cm Hg (30in Hg) to 32.34Kg/cm
2
(460psig). This is a display
alarm and has no associated failure action.
AL69
Suction Temperature
Sensor Failure
Alarm 69 is triggered by a suction temperature sensor reading outside the valid
range of -60
C (-76
F) to 150
C (302
F). This is a display alarm and has no as-
sociated failure action.
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.
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
replaced.
ERROR
ERR 0 - RAM failure
EER 1 - Program Memory failure
EER 2 - Watchdog time-out
EER 3 - N/A
EER 4 - N/A
EER 5 - A-D failure
EER 6 - IO Board failure
EER 7 - Controller failure
EER 8 - DataCorder failure
EER - 9 Controller failure
In the event that a failure occurs and the display cannot be updated, the status
LED will indicate the appropriate EER code using Morse code as shown below.
E R R 0 to 9ERR0 = . .-. .-. -----
ERR1 = . .-. .-. . ----
ERR2 = . .-. .-. . . ---
ERR3 = . .-. .-. . . . --
ERR4 = . .-. .-. . . . . -
ERR5 = . .-. .-. . . . . .
ERR6 = . .-. .-. - . . . .
ERR7 = . .-. .-. -- . . .
ERR8 = . .-. .-. --- . .
ERR9 = . .-. .-. ---- .
Entr
StPt
Enter Setpoint (Press
Arrow & Enter)
The controller is prompting the operator to enter a set point.
LO
Low Main Voltage
(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.
Table 4–6 Controller Alarm Indications (Continued)
CODE
TITLE
DESCRIPTION
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