Hoshizaki HWR68A(-D) User Manual

9

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."

) Press and hold both the 

 button and the 

 unmarked, blank button for 5 seconds. 

"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 

 up or 

 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 

 unmarked, blank button for 5 seconds to exit the setting 

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.

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."

) Press and hold both the

 button and the 

 unmarked, blank button for 5 seconds. 

"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 

 up or 

 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:

0

0

1

60

10

3

180

0

0

1

60