Service Manual

21
C. Freeze-Time Correction Cycle (90 min.)
Freeze-Time Correction function is enabled when S4 Dip Switch 7 is in the "ON" position
and initiates when the difference between the minimum and maximum recorded
freeze times is equal to or greater than values shown in the table below. Freeze time
is recorded and freeze cycles are counted starting at the 2nd freeze cycle after startup
from a power off condition. After 3 recorded freeze cycles, CB starts comparing the
minimum and maximum differential of recorded freeze cycles times. Up to 10 freeze
cycles are recorded and maintained in memory. At the 11th recorded freeze cycle,
the rst recorded freeze cycle time is dropped to maintain the maximum number of
10recorded freeze cycles. Freeze time recordings and freeze cycle counts restart after a
BC off cycle and resume at the 2nd freeze cycle after BC restart.
Example: After 8 cycles (excluding rst cycle), if the differential between the
shortestcycle (minimum) and the longest cycle (maximum) is equal to or greater than
427 sec. a freeze-time correction cycle is initiated:
Number of
Freeze Cycles
Differential
Value in Sec.
3 254
4 309
5 349
6 380
7 406
8 427
9 446
10 462
1) Initiation and CB Operation: When the differential between minimum and maximum
recorded freeze times exceeds the values in the table above, freeze-time correction
cycle starts. CB red "POWER OK" LED blinks. When freeze-time correction cycle
occurs 3 or more times within a 36 hour period, CB yellow "EXT HARVEST" LED blinks
with CB red "POWER OK" LED. Appliance starts in freeze cycle after a freeze-time
correction cycle. To reset CB LEDs, press ALARM RESET button on CB with power on.
CB resets LEDs and appliance continues cycle without interruption.