6-3
Section 6 Service
Bin Switch Check Procedure
1. Set the toggle switch to OFF.
2. Watch the bin switch light on the control
board.
3. Move the water curtain toward the evaporator.
The bin switch must close. The bin switch
light “on” indicates the bin switch has closed
properly.
4. Move the water curtain away from the
evaporator. The bin switch must open. The bin
switch light “off” indicates the bin switch has
opened properly.
Ohm Test
1. Disconnect the bin switch wires to isolate the
bin switch from the control board.
2. Connect an ohmmeter to the disconnected bin
switch wires. Set the ohmmeter to the 10,000-
ohm scale.
3. Cycle the bin switch by opening and closing
the water curtain.
4. With the bin switch open: Resistance readings
of more than 30,000 ohms indicate a correctly
operating bin switch.
5. With the bin switch closed: Resistance
readings of less than 70 ohms indicates a
correctly operating bin switch.
Important
Any reading between 70 and 30,000 ohms,
regardless of curtain position, indicates a
defective bin switch
Bin Switch Resistance Readings
Water Curtain Removal Notes
The water curtain must be on (bin switch closed)
to start ice making. While a freeze cycle is in
progress, the water curtain can be removed and
installed at any time without interfering with the
electrical control sequence.
If the ice machine goes into harvest sequence
while the water curtain is removed, one of the
following will happen:
• Water curtain remains off:
When the harvest cycle time reaches 3.5
minutes and the bin switch is not closed, the
ice machine stops as though the bin were full.
• Water curtain is put back on:
If the bin switch closes prior to reaching the
3.5 minute point, the ice machine immediately
returns to another freeze sequence prechill.
0 OHMS
GOOD
GOOD
70 OHMS
SWITCH CLOSED
30,000 OHMS
SWITCH OPEN
INFINITE
OHMS
METER
READS
(OL)
BAD
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