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T-359
4–38
AL67
Humidity
Sensor
Humidity Sensor (HS)
reading out of range.
Humidity Sensor
(HS)
Make sure the humidity
sensor is properly con-
nected in the socket.
Make sure the humidity
sensor wires have not
been damaged.
Monitor, replace HS if
alarm persists.
AL69
Evaporator
Temp Sen-
sor (ETS1)
Evaporator Tempera-
ture Sensor (ETS1)
out of range.
Evaporator Tem-
perature Sensor
(ETS1)
Test the ETS1, refer to
Sensor Checkout Proce-
dure
.
Replace Evaporator Tem-
perature Sensor (ETS1) if
defective.
AL70
Secondary
Supply
Sensor
(SRS)
Secondary Supply
Sensor (SRS) is
out of range.
Secondary Supply
Sensor (SRS)
Perform Pre-trip P5:
If P5 passes, no further ac-
tion is required.
If P5 fails, replace the de-
fective sensor as deter-
mined by P5, refer to
TEMPERATURE SEN-
SOR Service
AL71
Secondary
Return Sen-
sor (RRS)
Secondary Return
Sensor (RRS) is
out of range.
Secondary Return
Sensor (RRS)
Perform Pre-trip P5:
If P5 passes, no further ac-
tion is required.
If P5 fails, replace the de-
fective sensor as deter-
mined by P5, refer to
TEMPERATURE SEN-
SOR Service
AL72
Control
Temp Out of
Range
After the unit goes in-
range for 30 minutes
then out of range for a
continuous 120 min-
utes.
Refrigeration
System
Ensure unit is operating
correctly.
Power cycle unit.
Control Temperature is in
In-range.
Any Pre-Trip mode, resets
the timers.
Container doors
Check container doors,
ensure they are properly
closed and sealed
Close the container doors.
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 4–6 Controller Alarm Indications
CODE #
CAUSE
COMPONENTS
TROUBLESHOOTING
CORRECTIVE ACTIONS
Summary of Contents for 69NT40-561-019
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