Service manual

62-11389
3−10
3.7 CONTINUOUS OPERATION
COOL DEFROST ALARM START‐STOP
ALARM LIST
SELECT
MANUAL
DEFROST
HEAT CONTINUOUS
CONTINUOUS RUN MODE SELECTED
START‐STOP/
CONTINUOUS
CONTINUOUS
OPERATION
LIGHT
1. Press the START-STOP/CONTINU-
OUS key until the CONTINUOUS
OPERATION Light on the micropro-
cessor illuminates.
2. Verify that “CONTINUOUS RUN MODE SELECTED” is dis-
played on the MessageCenter and that the CONTINUOUS
OPERATION light is illuminated. The unit is now in Continu-
ous Operation.
SETPOINT BOX TEMPERATURE
+34.5 F
-20.0
In Continuous Operation, the unit will not shutdown ex-
cept in response to a shutdown alarm. Refer to Section
4.5 for more detailed information on Continuous Opera-
tion.
The microprocessor may be configured with Start-Stop
operation tied to the set point ranges for frozen and per-
ishable loads. The START-STOP/CONTINUOUS key is
locked out if “START-STOP LOCKED” displays in the
MessageCenter when the key is pressed and the unit is
in Start-Stop Operation or “CONTINUOUS LOCKED”
displays in the MessageCenter when the key is pressed
and the unit is in Continuous Operation. Refer to
Table 5−2 for more information on Configurations.
If the unit fails to start after three start attempts the A 31 -
“FAILED TO START-AUTO” alarm will be activated.
While running, if the unit shuts down, an internal counter
keeps track of the shutdowns. Should the unit shutdown
three consecutive times without running a minimum of
15 minutes between shutdowns the A30 - “FAILED TO
RUN MINIMUM TIME” alarm will be activated. The shut-
down counter is cleared when the unit has run for 15 mi-
nutes.