88 Part Number STH039 8/13
ON/OFF/WASH Toggle Switch
Function
The switch is used to place the ice machine in ON,
OFF or WASH mode of operation.
Specifications
Single-pole, double-throw switch. The switch is
connected into a varying low D.C. voltage circuit.
Check Procedure
NOTE: Because of a wide variation in D.C. voltage, it
is not recommended that a voltmeter be used to check
toggle switch operation.
1. Inspect the toggle switch for correct wiring.
2. Isolate the toggle switch by disconnecting all
wires from the switch, or by disconnecting the
Molex connector from the control board.
3. Check across the toggle switch terminals using a
calibrated ohmmeter. Note where the wire
numbers are connected to the switch terminals, or
refer to the wiring diagram to take proper
readings.
Replace the toggle switch if ohm readings do not
match all three-switch settings.
Switch Setting Terminals Ohm Reading
ON
24-21 Open
24-20 Closed
20-21 Open
WASH
24-20 Open
24-21 Closed
20-21 Open
OFF
24-20 Open
24-21 Open
20-21 Open
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