Float Switch Check And Cleaning; Float Switch Check - Hoshizaki KM-1601SAH/3 Service Manual

D. Float Switch Check and Cleaning
F/S is used to determine that there is sufficient water in the water tank after the 1-minute
fill cycle and after each harvest cycle. F/S is also used to determine that the appropriate
volume of water has been converted into ice before switching out of the freeze cycle. No
adjustment is required.

1. Float Switch Check

To check F/S, follow the steps below.
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. 1. Allow the
water tank to drain.
4) Replace the drain plug in its correct
position. Be careful not to cross thread it.
5) Remove the control box cover.
6) Disconnect the black F/S connector from
CB BLACK K5 connector.
7) Check for continuity across F/S leads. With the water tank empty, F/S should be open.
If open, continue to step 8. If closed, follow the steps in "IV.D.2. Float Switch Cleaning."
After cleaning F/S, check it again. Replace if necessary.
8) Reconnect the black F/S connector to CB BLACK K5 connector, then replace the
control box cover in its correct position.
9) Move the control switch to the "ICE" position. Replace the insulation panel and the
front panel in their correct positions, then turn on the power supply. After 1 minute, the
1-minute fill cycle should end and the initial harvest cycle should begin. If the initial
harvest cycle begins, F/S is good and the check is complete. If the initial harvest cycle
does not begin, continue to step 10.
10) Turn off the power supply.
11) Remove the front panel, then move the control switch to the "OFF" position.
12) Remove the control box cover.
13) Disconnect the black F/S connector from CB BLACK K5 connector.
14) Check for continuity across F/S leads. With the water tank full, F/S should be closed. If
F/S is closed and the icemaker will not switch from the 1-minute fill cycle to the initial
harvest cycle, replace CB.
If open, confirm that the water tank is full. If the water tank is not full, check the water
supply, water filters, and WV. If the water tank is full, follow the steps in "IV.D.2. Float
Switch Cleaning." After cleaning F/S, check it again. Replace if necessary.
Ice Chute
Float Switch Assembly
60
Drain Plug
Fig. 1