Failed Freeze Time Out Shutdown; Possible Causes; Failed Harvest Shutdown; Bin Full Delay - Cornelius XAC 1444 Service Training Manual

FAILED FREEZE TIME OUT SHUTDOWN

1. If the freeze time reaches 50 minutes before a harvest cycle is initiated, the machine goes into the
harvest cycle.
2. After a successful harvest cycle, the machine goes into another water fill and freeze cycle.
3. If the freeze time reaches 50 minutes again, the machine again goes into the harvest cycle.
4. After a successful harvest cycle, the machine goes into another water fill and freeze cycle.
5. If the freeze time reaches 50 minutes again, the machine shuts down.
6. While shut down, the ERROR LED flashes 2 times at 4–second intervals.
7. The machine will not run until the power is cycled OFF and then ON.

Possible Causes

1. Water pump failure.
2. Low refrigerant charge.
3. Leak in refrigerant lines.
4. Compressor failure.
5. Hot gas valve leaking.
6. Dirty evaporator.

FAILED HARVEST SHUTDOWN

1. During the harvest cycle, if the proximity switches remain closed for 4 minutes after the hot gas valve
opens, the machine goes into another water fill and freeze cycle.
2. If the harvest time again exceeds 4 minutes, the machine goes into another water fill and freeze
cycle.
3. If the harvest time again exceeds 4 minutes, the machine shuts down.
4. While shut down, the ERROR LED flashes 3 times at 4–second intervals.
5. The machine will not run until the power is cycled OFF and then ON.
Possible Causes
1. Hot gas valve failure.
2. Low refrigerant charge.
3. Proximity switch failure.
4. Compressor failure.

BIN FULL DELAY

1. During the harvest cycle, if the proximity switches remain open for more than 5 seconds after the last
switch opens, the machines enters a delay sequence.
2. The machine remains in a delay until all proximity switches close. Once all switches are closed, the
machine goes into a water fill and freeze cycle.

LOW CONDENSER TEMPERATURE WARNING

1. If the condenser temperature falls below 36
2. While shut down, the WARNING LED flashes 4 times at 4–second intervals.
3. If the condenser temperature rises above 42
Possible Causes
1. Ambient temperature below 50
TP00952
_
F, the machine shuts down.
_
F, the machine goes into a secondary startup cycle.
_
F.
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Xtreme Ice Training Manual
October 17, 2005