Rheem RARL-JEC Installation Instructions - Page 30

CONVENTIONAL THERMOSTAT WIRING 30 Second Minimum Run Timer • The ICC has a built in 30 second minimum unit run time. If a call for compressor operation is received by the ICC and the call 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 call for compressor operation to minimize current inrush and/or voltage drop. 11.10 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 call 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 call 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 IMPORTANT: This mode of active protection must be manually reset. 30