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• WV time: 6 min. or the length of harvest minus 50
sec. (S4 dip switch 7), whichever is shorter. Do not
adjust S4 dip switch 7 out of the factory position.
• Max. harvest time: 20 min.
FS check
1 to 3-min. harvest timer in
control (S4 dip switch 1 & 2)
Legend:
BC–bin control
Comp–compressor
FM–fan motor
FMR–fan motor-remote
FS–oat switch
HGV–hot gas valve
LLV–liquid line valve
PM–pump motor
WV–inlet water valve
Components Energized when the Control Switch is in the "WASH" Position
The "WASH" position on the control switch is used when cleaning and sanitizing the unit. When in the "WASH" position,
power is supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer ow over the outside of the
evaporator plate assembly. With the cleaning valve open, the cleaner and sanitizer ow over both the outside and the inside
of the evaporator plate assembly.
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not restart when the control
switch is placed in the "ICE" position.
"G" Control Board with Harvest Pump Timer Operation Flow Chart
1. 1-Minute
Fill Cycle
Cycle
Steps
2. Harvest Cycle
Thermistor
in control
3. Freeze Cycle
• Min. freeze time: 5 min.
• Max. freeze time: freeze timer setting
(S4 dip switch 9 & 10)
FS in control
4. Pump-Out Cycle
• Factory set for every
10th cycle
(S4 dip switch 5 & 6)
• Pump motor stops for
2 sec., then reverses
for 10/20 sec.
(S4 dip switch 3 & 4)
WV energized
FS open
Comp energized
FMR energized
HGV energized
WV energized
Thermistor temperature
reaches 48°F (9°C)
(3.9 kΩ or less).
Harvest timer starts.
FS open
Comp continues
FM continues
FMR continues
PM continues
LLV energized
HGV de-energized
FS closed
Comp continues
FMR continues
HGV energized
PM de-energizes for 2 sec.,
then reverses for 10/20 sec.
FM de-energized
(FM continues on KM-1601SAH)
LLV de-energized
FS check
Startup
If FS is open, Comp stops and cycle returns to 1-Min. ll.
5-min. timer
in control
FS closed
FS opens or
freeze timer
terminates
NOTE:
Green "BC CLOSED" LED on continuously
when the K4 jumper is in place.
50 sec.
PM energized
WV de-energized
Harvest Pump
Timer
2. "G" Control Board with Harvest Pump Timer Operation
1. Bin Full
Within 10 sec. after ice contacts BC bulb,
icemaker shuts down.
Shutdown
and Restart
BC
Operation
Ice contacts BC bulb
2. Icemaker Off
All components
de-energized.
3. Ice Level Lowered
No ice touching BC bulb.
Icemaker starts at
"1. 1-Minute Fill Cycle."
BC closed
BC open
All components
de-energized
To 1. 1-Minute Fill Cycle