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C. Sequence of Operation
The steps in the sequence are as outlined below. When power is supplied, the power
switch is in the "ON" position, and the control switch is in the "ICE" position, the
"POWER" LED on the control board comes on.
1. Fill Cycle
WV opens and the reservoir fills with water until UF/S closes. Note: GM will not start
unless UF/S is closed. For details, see "IV. Service Diagnosis".
2. Ice Purge Cycle (60 seconds)
"GM" LED is on. WCR energizes, closing the low water safety circuit and de-energizing
the WV. GM and GMPR energize. GM runs for 60 seconds to clear any ice from the
evaporator.
3. Freeze Cycle
"COMP", "GM" LEDs are on. Comp and FMS energize. As the water in the evaporator
cools, ice starts forming within 4 to 6 minutes. This time frame depends on the inlet
water and ambient temperature conditions. UF/S and LF/S operate WV as needed to
continue the ice making process. This continues until BC shuts the icemaker down or
power is turned off to the icemaker.
4. Drain Cycle
1 hour DT activates, "FLUSH" LED is on after 150 second shutdown sequence. Comp
and FMS de-energize 90 seconds after the 1 hour DT activates, GMPR and GM
de-energize 60 seconds later. DV then energizes and remains energized for 0 minutes.
5. Shutdown
BC is activated and a 150 second shutdown sequence begins. After BC has been
open for 90 seconds, Comp and FMS de-energize, AM energizes for 0.6 seconds, and
60 seconds later GM de-energizes.
Legend: AM–agitating motor; BC–bin control; Comp–compressor; DT–drain timer;
FMS–self-contained fan motor; GM–gear motor; GMPR–gear motor protect
relay; LF/S–lower float switch; UF/S–upper float switch; WCR–water control
relay; WV–inlet water valve
8
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