Rheem RARL-JEC Installation Instructions - Page 20

Active Compressor Protection Mode

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COMFORT CONTROL2 SYSTEM™ CONTROL WIRING Flashing lower case c A command for first stage cooling has been received Flashing upper case C A command for second stage cooling has been received • The 3-minute time delay can be bypassed when a command for compressor operation is present by pressing the TEST button for 1 second and releasing. The compressor will begin operation and the dual 7-segment will stop flashing. 30 Second Minimum Run Timer • 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 compressor 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 Second Compressor/Fan Delay • 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. 11.4 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) Low Pressure Control Lockout • 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 Cooling Mode • 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". IMPORTANT: This mode of active protection must be manually reset. 2) High Pressure Control Lockout • 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". 20

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Flashing lower case c
A command for first stage cooling has been received
Flashing upper case C
A command for second stage cooling has been received
• The 3-minute time delay can be bypassed when a command for compressor
operation is present by pressing the TEST button for 1 second and releasing.
The compressor will begin operation and the dual 7-segment will stop flashing.
30 Second Minimum Run Timer
• 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 Second Compressor/Fan Delay
• 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.
11.4 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) Low Pressure Control Lockout
• 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
Cooling Mode
• 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”.
IMPORTANT:
This mode of active protection must be manually reset.
2) High Pressure Control Lockout
• 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”.
COMFORT CONTROL
2
SYSTEM™
CONTROL WIRING
20