Bin Control Check - Hoshizaki KM-301BAJ Service Manual

D. Bin Control Check

1. Bin Control Check

This appliance uses a lever-actuated proximity switch to control the ice level in the
storage bin. No adjustment is required.
To check BC, follow the steps below.
1) Remove the louver, then move the control switch to the "OFF" position. Move the
service switch to the "DRAIN" position, then move the control switch to the "SERVICE"
position. Allow the water tank to drain completely.
2) After all of the water has drained, move the control switch to the "OFF" position, then
unplug the icemaker from the electrical outlet.
3) Clear any ice away from BC.
4) Remove the top and upper rear panels.
5) From the compressor area, locate the BC/CB and FS/CB protective plastic bundle.
Open the protective plastic bundle and remove the BC/CB connector from the protective
plastic bundle.
6) Disconnect the BC/CB 2-pin connector (2 black (BK) wires coming from BC and 2 black
(BK) wires coming from CB K1 connector pins 4 and 5.)
7) Check for continuity across the wires of the BC connector. When the actuator paddle is
not engaged, BC switch is closed. If open, check that the actuator paddle is not sticking.
Clean if necessary. See "II.D.2. Bin Control Cleaning." If BC switch still reads open,
replace BC.
8) Reach under the evaporator and water tank and press and hold the actuator paddle;
check for continuity across the wires of BC connector. When the actuator paddle is
engaged, BC switch is open. If closed, check that the actuator paddle is not restricted.
Clean if necessary. See "II.D.2. Bin Control Cleaning." If BC switch still reads closed,
replace BC.
9) Reconnect the BC connector to CB K1 connector and resecure in the protective plastic
with the FS/CB connector. Next, move the control switch to the "ICE" position. Remove
the control box mounting screws and lower the control box to view the CB LEDs.
10) Plug the icemaker into the electrical outlet.
11) Allow the icemaker to cycle into the freeze cycle. Once in the freeze cycle, press and
hold the actuator. The CB "POWER OK" LED should start flashing and the icemaker
should shut down according to the chart below. If not, check that the BC/CB connector
is securely reconnected. If so, replace CB.
Cycle at Bin Shutdown
Control Activation
Fill Cycle 15 sec. after activation.
Harvest Cycle At the end of the harvest cycle, or up to 15 sec. into the freeze cycle if activated at the
end of the harvest cycle.
Freeze Cycle 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
12) Replace the control box, louver, upper rear, and top panels in their correct positions.
Legend: BC–bin control; CB–control board; FS–float switch
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