Control Board Model Code Setting; Control Board Replacement; Checking Or Changing The Control Board Model Code - Hoshizaki IM-500SAA Service Manual

F. Control Board Model Code Setting

1. Control Board Replacement

• This appliance should be diagnosed and repaired only by qualified service
personnel to reduce the risk of death, electric shock, serious injury, or fire.
• Move the control switch to the "OFF" position and turn off the power supply. Place
the disconnect in the "OFF" position. Lockout/Tagout to prevent the power supply
from being turned back on inadvertently.
1) Move the control switch to the "OFF" position and turn off the power supply. Place the
disconnect in the "OFF" position. Lockout/Tagout to prevent the power supply from
being turned back on inadvertently.
2) Remove the front cover and control box cover.
3) Disconnect all the connectors from the control board.
4) Remove the old control board and install the new control board (
or Later).
5) Connect the connectors to the new control board.
6) Replace the control box cover in its correct position.
7) Turn on the power supply, then move the control switch to the "ICE" position.
8) "00" appears in the display of the new control board.
9) Press the "SERVICE 1" button to increase the first digit in the display and the
"SERVICE 2" button to increase the second digit. Digits appear in the following order:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. When a valid model code is displayed, the dot
in the bottom right of the display turns on. For IM-500SAA, set model code to "08".
10) When the desired model code is displayed, press the "RESET" button to save the
setting. "on" appears in the display.
11) Replace the front panel in its correct position.

2. Checking or Changing the Control Board Model Code

1) With unit on, press and hold the "SERVICE 1" button for 3 seconds. Display changes to
"n1".
2) Use the "SERVICE 1" and "SERVICE 2" buttons to move through the list until "h6" is
displayed.
3) Press the "RESET" button to view the current model code. To change the model code,
continue through the remaining steps; otherwise, the display returns to normal if no
buttons are touched for 20 sec.
4) Press and hold the "SERVICE 1" and "SERVICE 2" buttons simultaneously for 15 sec.
"00" appears in display.
WARNING
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P01873-01 Version 1.3A