Freeze-Time Correction Cycle (90 Min.) - Hoshizaki Serenity Series Service Manual

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 minimum and maximum freeze times have exceeded differential
parameters. Freeze-time correction timer and count starts at the beginning of the 2nd
freeze cycle after startup from power off condition. Freeze-time correction timer and count
continues and retains its freeze-time correction timer and count during a BC off cycle
and resumes its freeze-time correction timer and count on the 2nd freeze cycle after BC
restart. If freeze-time differential is exceeded (see table below), freeze-time correction
cycle starts and 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.
1) Freeze Time Differential Initiation: CB starts monitoring freeze times on the second
freeze time. After 3 freeze cycles (4th total), CB begins to compare minimum and
maximum freeze time cycles. Every freeze cycle time after the first freeze cycle
time is added to the freeze time list. Minimum and maximum freeze time differential
comparisons begin on the third cycle and are monitored up to 10 cycles. On the 11th
cycle the first freeze cycle time is dropped to maintain the 10 maximum number of
cycles.
Example: After 8 cycles (excluding first 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:
2) Freeze-Time Correction Sequence:
First occurrence within 36 hr., minimum and maximum freeze times have exceeded
differential parameters. CB "POWER OK" LED starts blinking. Freeze-Time Correction
Cycle starts.
Second occurrence within 36 hr., minimum and maximum freeze times have exceeded
differential parameters. If not reset, CB "POWER OK" LED continues blinking. If reset
from first occurrence, CB "POWER OK" LED starts blinking. Freeze-Time Correction
Cycle starts.
Number of Differential
Freeze Cycles Value in Sec.
3 254
4 309
5 349
6 380
7 406
8 427
9 446
10 462
20