Service manual

3-13
T-294-01
Code
No.
DESCRIPTIONTITLE
AL64
Discharge
Temperature Over
Limit (CPDT)
Alarm 64 is triggered if the discharge temperature is sensed greater than 135 _ C
(275
_ F) for three continuous minutes, if it exceeds 149 _ C (300_F),orifthe
sensor is out of range. This is a display alarm and has no associated failure
action.
AL65
Discharge Pressure
T ransducer Failure
(DPT)
Alarm 65 is triggered by a compressor discharge transducer reading outside the
valid range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm
2
(460 psig). This is a
display alarm and has no associated failure action.
AL66
Suction Pressure
T ransducer Failure
(SPT)
Alarm 66 is triggered by a suction pressure transducer reading outside the valid
range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm
2
(460 psig). 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 active and the dehumidification mode
was previously activated, then the dehumidification mode will be deactivated.
AL68
Condenser Pressure
T ransducer Failure
(CPT)
Alarm 68 is triggered by a condenser pressure transducer reading outside the
valid range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm
2
(460 psig). This is a
display alarm and has no associated failure action.
AL69
Suction Temperature
Sensor Failure
(CPSS)
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
associated failure action.
NOTE
If the Controller is configured for four probes without a DataCORDER, the DataCORDER alarms AL70
and AL71 (See Table 3-7) will be processed as Controller alarms AL70 and AL71.
The Controller performs self-check routines. if an internal failure occurs, an ERR
#0--5 will appear on the display. This is an indication the Controller needs to be
replaced.
ERROR DESCRIPTION
#0 -- RAM failure
Indicates that the Controller working memory has
failed.
E
R
R
Internal
#1 -- Program Memory
failure
Indicates a problem with the Controller program.
E
R
R
#
I
n
t
e
r
n
a
l
Microprocessor
Failure
#2 -- Watchdog time--out
The Controller program has entered a mode
whereby the Controller program has stopped
executing.
#3 -- On board timer
failure
The on board timers are no longer operational.
Timed items such as; defrost, etc. may not work.
#4 -- Internal counter
failure
Internal multi-purpose counters have failed. These
counters are used for timers and other items.
#5 -- A-D failure
The Controller’s Analog to Digital (A-D) converter
has failed.
Entr
StPt
Enter Setpoint
(Press Arrow &
Enter)
The Controller is prompting the operator to enter a set point.
LO
Low Mains Voltage
(Function Codes
Cd27--38 disabled
and NO alarm
stored.)
This message will be alternately displayed with the set point whenever the mains
voltage is less than 75% of its proper voltage.