Control Board Replacement - Hoshizaki KM-251BAH Service Manual

7. Control Board Replacement

1) Turn off the power supply and disconnect the wiring to the board.
2) Install the new board and make the wiring connections.
3) Set the application switch located between relays X3 & X4 to the ALP position. If this
switch is placed in the wrong position, the unit will not start.
4) Adjust the dip switches to the factory default settings. See "II.C.3.a) Default Dip Switch
Settings." S4 dip switch #8 must remain in the OFF position.
5) Turn on the power supply, then place the control switch in the ICE position. The red LED
should come on.
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