Part Number STH025 11/16 163
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 should
flash like a heartbeat. The two green lights are located on
the top right corner of the control board.
Display Diagnostics
Symptom - Micro light flashes and display light is off.
1. Disconnect both ends of the communication cable
running between the control board and the back of
the display module and inspect for bent or damaged
pins. Reconnect after inspection.
2. Reboot ice machine by disconnecting power for
a minimum of 15 seconds, reapplying power and
checking micro light for normal flashing.
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.
Component Check Procedures
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