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3.9 MANUAL DEFROST
COOL DEFROST ALARM START‐STOP
SETPOINT BOX TEMPERATURE
ALARM LIST
SELECT
MANUAL
DEFROST
HEAT CONTINUOUS
DEFROST CYCLE STARTED
+34
START‐STOP/
CONTINUOUS
DEFROST LIGHT
Press the MANUAL DEFROST key. The DEFROST light will come on and the Messa-
geCenter will display “DEFROST CYCLE STARTED” for 5 seconds, or flash “CANNOT
START DEFROST CYCLE” for five seconds.
dF
When defrost mode cannot be manually initiated “CAN-
NOT START DEFROST CYCLE” is displayed in the
MessageCenter. This will occur when:
• DTT is above 40°F (4°C). Defrost may be entered
any time the DTT is below 40°F (4°C) OR
• The engine has not run 15 seconds after starting OR
• The unit is in PC Mode OR
• The unit is in Pretrip OR
• There is an active shutdown Alarm.
TIP
The Manual Defrost Key can be used at any
time to start a Defrost Cycle as long as the pre-
ceding conditions are met.
NOTE
Refer to Section 4.6 for more detailed informa-
tion on DEFROST.
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