Part Number STH038 5/12 123
Component Check Procedures
Electrical Components
CONTROL BOARD, DISPLAY BOARD AND TOUCH
PAD
FUNCTION
The control board, display board and touch pad
provide user input and control the ice machine
sequence of operation.
NOTE: Anytime power is supplied to wires #55 & #56
on the control board, the “Display” and “Micro” lights
will flash like a heartbeat. The two green lights are
located on the top right corner of the control board.
Display Diagnostics
1. Micro light flashes and display light is off.
2. Disconnect and reconnect both ends of the
communication cable running between the control
board and the back of the display module.
3. Press the power button on the display and watch
the green Display light on the control board.
A. Display light flashes- Test run ice machine.
B. Display light is off - Replace communication
cable first as a test, then replace display/
touch pad assembly if required.
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