Bin Control Check - Hoshizaki DCM-270BAH Service Manual

D. Bin Control Check
When BC (microswitch) is not engaged, BC circuit (CB K8 #3 (GY) and CB K8 #4 (GY))
is closed and the appliance produces ice.
S1 dip switch 7 must be in the "OFF" position and S1 dip switch 8 must be in the "ON"
position. When ice fills the bin and engages BC large balance plate, BC opens and CB
shutsdown the appliance within 10 seconds. NOTICE! Do not place S1 dip switch 7 in
the "ON" position or S1 dip switch 8 in the "OFF" position. For details, see "III.C.1.
Default Dip Switch Settings."
1) Move the power switch to the "OFF" position.
2) Remove the front, top, and left side panels.
3) Move the control switch to the "OFF" position.
4) Remove the thumbscrews securing the storage bin cover. WARNING! Keep hands,
hair, and loose clothing clear of the agitator rotating inside of the storage bin.
5) Disconnect BC connector from the back of the control box.
6) Check for continuity across BC microswitch. If BC large balance plate is not engaged
and BC microswitch is open, replace BC microswitch.
7) Press and hold BC large balance plate. While BC large balance plate is engaged, check
for continuity across BC microswitch. If BC large balance plate is engaged and BC
microswitch is open, replace BC microswitch.
8) Disengage BC large balance plate.
9) Reconnect BC connector. Remove the control box cover.
10) Move the move the control switch to the "ICE" position, then move the power switch to
the "ON" position.
11) Make sure the "GM" LED is on. There is a delay of at least 5 seconds before the "GM"
LED turns on after power-up. After the "GM" LED turns on, press the "SERVICE" button
on CB to bypass the 5-min. ice purge timer. WARNING! Risk of electric shock. Care
should be taken not to touch live terminals. "COMP" LED turns on.
12) When Comp starts, press and hold BC large balance plate.
13) Comp and GM should de-energize within 10 seconds. Diagnosis: If not, and BC
microswitch is found open and the appliance continues to run, replace CB.
14) Move the power switch to the "OFF" position. Leave the control switch in the "ICE"
position.
15) Replace the storage bin cover and secure.
16) Replace the control box cover, left side, top, and front panels in their correct positions.
17) Move the power switch to the "ON" position to start the automatic icemaking process.
Legend: BC–bin control; CB–control board; Comp–compressor; GM–gear motor
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