126 Part Number STH038 5/12
CONTROL BOARD RELAY TEST
The control board can be set to energize all relays for
3.5 minutes. This allows testing to verify control board
relays are closed and line voltage is available for ice
machine components - Water pump, dump valve,
water inlet valve, harvest valve(s), air compressor,
contactor/compressor/fan motor - The fan cycle
control must close to energize the fan motor.
1. Press power button to turn off ice machine.
2. Perform the following keystrokes on the display.
• Press Menu, scroll down to Service and press the
right arrow
• Scroll down to Diagnostics, press the right arrow
and select Diagnostics
• Display reads Control Board, press right arrow
• Scroll down to enbl relays and press right arrow to
start control board test
3. The control board will energize all relays and the
red light next to the relay. The red light indicates
the relay coil is energized.
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