Part Number 80-1230-9 10/10 133
NO ICE PRODUCTION
SN012/SN020/SF0400/SN0450/SF0600/SN0650/
SF0900/SN0950/SF1200/SN1250
The ice damper did not open and close at least once
every 90 seconds in the freeze cycle.
OPERATION
During the first 8 minutes of operation:
The control board must see the ice damper open/close
at least once. This allows time for ice production to
start at all ambient temperatures
After the initial 8 minute period:
The control board must see the ice damper open/close
at least once every 90 seconds.
When the ice damper does not open/close within the
specified time the control board will:
1. De-energize the compressor and gearmotor.
2. HES #1 light on the control board will flash (the
light will not flash if the ice damper is open).
3. A 5 minute delay is initiated.
4. After the 5 minute delay the ice machine will:
A. Energize the dump valve for 30 seconds
B. Energize the gearmotor
C. Wait until the water float valve closes and
then energize the compressor and fan motor.
5. If the ice damper fails to open/close at least once
in the initial 8 minute period, the control board will
initiate another safety shutdown. This sequence
will repeat until:
A. The ice machine restarts and operates
normally for 10 minutes.
B. The ice machine is unable to run normally
within 300 minutes of the initial shutdown.
If the ice machine does not run normally within 300
minutes of the initial shutdown, the control board will
lock out and require a manual reset.
The control board will flash the HES #1 light anytime
the toggle switch is placed in the off position for the
first 48 hours after the failure.
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