T-340
4–38
AL14
Phase
Sequence De
-
tect Fault
Controller is unable to
determine the correct
phase relationship.
N/A
Power cycle the unit.
Resetting the unit may
correct problem, monitor
the unit.
Wiring
Check unit wiring.
Confirm pressure read
-
ings during start-up; suc
-
tion pressure should
decrease and discharge
pressure should in
-
crease.
Correct wiring.
Current Sensor
Check Cd41, right most
digit:
If display is 3 or 4 check
compressor / sensor wir
-
ing.
If display is 5 the current
sensor is defective.
Replace current sensor if
defective.
AL16
Compressor
Current High
Compressor current
draw is over the calcu
-
lated maximum for 10
minutes.
Current Sensor
Compare Cd3 to actual
measured current at wire
T1-T2 or T3 going to the
compressor contactor. If
there is a difference, de
-
termine whether this is
caused by current sen
-
sor or amp clamp tool.
Replace current sensor if
defective.
Amperage is in
-
deed too high.
Confirm supply voltage/
frequency is within spec
-
ification and balanced
according to Electrical
Data
Correct power supply.
Operating Condi
-
tions
Make sure system pres
-
sures are relevant to op
-
erating conditions.
Check air flow of con
-
denser.
Check Refrigerant
charge, refer to RE
-
FRIGERATION SYS
-
.
Monitor Unit
Alarm is display only the
alarm may clear itself
during operation.
If alarm remains active
or is repetitive replace
compressor at next
available opportunity, re
-
fer to COMPRESSOR
Service
Table 4–6 Controller Alarm Indications
Alarm Code
Cause
Components
Troubleshooting
Corrective Actions
