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B. Sequence of Operation
1. Auxiliary Codes A-1 and Earlier
After the power switch is placed in the "ON" position, the steps in the sequence are as
outlined below.
a) Freeze Cycle
BCH, GM, FM, CR, and Comp energize. NOTICE! Some units contain a sticker that
states: "The bin control heater has been disconnected. DO NOT reconnect the
bin control heater." In this case, leave BCH disconnected or replace BC assembly
with 3A2561A03. Ice production starts 4 to 6minutes after Comp energizes depending
on ambient and water conditions. The freeze cycle continues until BC shuts down the
icemaker or power is turned off to the icemaker. Rell: The oat-operated WV allows
water into the reservoir as needed to continue the icemaking process. If the water supply
is cut off or GM stops during the freeze cycle, the cold evaporator temperature causes
STS to open and de-energize all components except BCH and optional drain pump
HS-0248.
b) Bin Control Thermostat Shutdown
Ice lls storage bin to level of BC. BC opens within 10 seconds after ice contact. When
BC opens, BCH remains energized. GM, FM, CR, and Comp de-energize. When ice level
lowers and BC closes, the icemaker starts operating again.
C-100BAF Series Sequence Flow Chart and Component Operation
(auxiliary codes A-1 and earlier)
Legend: BC–bin control thermostat; BCH–bin control heater; Comp–compressor;
CR–compressor relay; FM–fan motor; GM–gear motor; STS–suction temperature
safety (low water/freeze-up safety); WV–inlet water valve
2. Shutdown
1. Freeze Cycle
Bin Full
BC closed
Low Water/
Freeze-Up Safety
BC closed
STS open
BCH continues
Comp de-energized
FM de-energized
GM de-energized
When STS closes,
icemaker restarts at
1. Freeze Cycle.
STS
open
BC
open
Float-operated WV allows
water into reservoir as needed.
BC closed
STS closed
BCH energized
Comp energized
FM energized
GM energized
Power Switch
"ON"
BC closed
STS closed
BCH continues
Comp continues
FM continues
GM continues
BC open
STS closed
BCH continues
Comp de-energized
FM de-energized
GM de-energized
Rell