D) High Temperature Alarm Delay Time (F3); E) Low Temperature Alarm Delay Time (F4) - Hoshizaki HUR40A(-D) Service Manual

d) High Temperature Alarm Delay Time (F3)

To change the high temperature alarm delay time, follow the steps below.
1) Make sure the jumper is removed between connector K151 pins 7 and 8 on the control
board. Otherwise you will not be able to access this setting. For details, see "D.1.
Gaining Access to Settings and Diagnostics."
2) Press and hold both the
"F0" should appear in the display window. Press the MANUAL DEFROST button until
"F3" appears in the display window.
3) Press the unmarked, blank button to display the current setting. Press the
down button to increase or decrease the high temperature alarm delay time.
Note: The time can be adjusted between 0 and 180 minutes in 60 minute increments.
The display corresponds to time as follows:
4) Press the unmarked, blank button to save the setting.
5) Press the MANUAL DEFROST button to return to the menu screen. Press and hold
both the button and the
mode and return to the temperature display.
6) If a jumper was present between connector K151 pins 7 and 8, reconnect it after all
setting and diagnostic work is complete.

e) Low Temperature Alarm Delay Time (F4)

To change the low temperature alarm delay time, follow the steps below.
1) Make sure the jumper is removed between connector K151 pins 7 and 8 on the control
board. Otherwise you will not be able to access this setting. For details, see "D.1.
Gaining Access to Settings and Diagnostics."
2) Press and hold both the
"F0" should appear in the display window. Press the MANUAL DEFROST button until
"F4" appears in the display window.
3) Press the unmarked, blank button to display the current setting. Press the
down button to increase or decrease the low temperature alarm delay time.
Note: The time can be 0 or 60 minutes. The display corresponds to time as follows:
button and the unmarked, blank button for 5 seconds.
Display Detection Time
(minutes)
0 0
1 60
2 120
3 180
unmarked, blank button for 5 seconds to exit the setting
button and the unmarked, blank button for 5 seconds.
Display Detection Time
(minutes)
0
1
29
0
60
up or
up or