Active Compressor Protection Mode - Rheem ASL-JEC 18 Seer Installation Instructions Manual

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3 3 0 0 S S e e c c o o n n d d M M i i n n i i m m u u m m R R u u n n T T i i m m e e r r
• The ICC has a built in 30 second minimum unit run time. If a command for com-
pressor operation is received by the ICC and the command is removed, the com-
pressor will continue to operate for 30 seconds. The dual 7-segment LEDs will
flash "c" or "C" while the minimum run timer is active.
1 1 S S e e c c o o n n d d C C o o m m p p r r e e s s s s o o r r / / F F a a n n D D e e l l a a y y
• The ICC starts/stops the outdoor fan one (1) second after the start/stop of the
compressor upon a command for compressor operation to minimize current
inrush and/or voltage drop.

12.5 Active Compressor Protection Mode

• The ICC actively protects the compressor from harmful operation during a fault
condition.
• When the ICC detects a condition that could damage the compressor, the ICC will
enter active protection mode and lockout compressor operation
• The condition causing active protection must be resolved then the ICC can be
reset to restart the system.
• There are five (5) active protection modes:
1 1 ) ) L L o o w w P P r r e e s s s s u u r r e e C C o o n n t t r r o o l l L L o o c c k k o o u u t t
• The ICC will display a flashing "L" followed by a flashing 21 when a low pressure
control lockout occurs.
• The ICC addresses low pressure control faults differently depending on the mode
of unit operation (cooling or heating mode).
Active Protection – Code L21 – Open low pressure control
C C o o o o l l i i n n g g M M o o d d e e
• If the LPC opens three (3) times during the same command for cooling operation,
the ICC will lockout the compressor to keep it from continuing to operate and flash
a L" on the dual 7-segment LEDs followed by a "21".
I I M M P P O O R R T T A A N N T T : : This mode of active protection must be manually reset.
2 2 ) ) H H i i g g h h P P r r e e s s s s u u r r e e C C o o n n t t r r o o l l L L o o c c k k o o u u t t
• If the HPC opens three (3) times during the same command for unit operation, the
ICC will lockout the compressor to keep it from continuing to operate and flash a
L" on the dual 7-segment LEDs followed by a "29".
Active Protection – Code L29 – Open high pressure control
I I M M P P O O R R T T A A N N T T : : This mode of active protection must be manually reset.
3 3 ) ) L L o o c c k k e e d d R R o o t t o o r r
• The ICC will display a flashing "L" followed by a flashing "04" when a locked rotor
condition occurs.
L
2 1
L
2 9