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19) Disconnect FS connector from CB K5 (black) connector.
20) Check for continuity across FS leads. With the water tank full, FS should be closed.
If FS is closed and the icemaker will not switch from the 1-min. fill cycle to the initial
harvest cycle, replace CB.
21) If open, confirm that the water tank is full. If the water tank is not full, check the water
supply, water filters, and inlet water valve. If the water tank is full, follow the steps in
"II.E.2. Float Switch Cleaning." After cleaning FS, check it again. Replace if necessary.
Legend: CB–control board; F/S–float switch
2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the float to stick. In this case, FS should be cleaned.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the insulation panel, then remove the drain plug located on the lower front part
of the ice chute. See Fig. 3. Allow the water tank to drain.
4) Replace the drain plug in its correct position. Be careful not to cross thread it.
5) Disconnect the vent tube and the flush tube from the top of FS, then remove FS
assembly and remove the rubber boot from the bottom of FS assembly. See Fig. 5.
6) Remove the retainer rod from the bottom of FS housing, then remove the float.
Be careful not to bend the retainer rod excessively when removing it.
7) Wipe down FS housing, shaft, float, and retainer rod with a mixture of 1 part Hoshizaki
"Scale Away" and 25 parts warm water. Clean the inside of the rubber boot and hose
with cleaning solution. Rinse the parts thoroughly with clean water.
8) Reassemble FS assembly and replace it and the
rubber boot in their correct positions. Reconnect
the vent tube and the flush tube.
9) Move the control switch to the "ICE" position.
10) Replace the insulation panel and front
panel in their correct positions.
11) Turn on the power supply to start the
automatic icemaking process.
Legend: CB–control board; FS–float switch
Vent
Float Switch
Stop
Rubber Boot
and Hose
26
Flush
Shaft
Float Switch
Housing
Float
Retainer Rod
Fig. 5
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